CN117989031A - Hybrid vehicle starting control method and device, vehicle and storage medium - Google Patents
Hybrid vehicle starting control method and device, vehicle and storage medium Download PDFInfo
- Publication number
- CN117989031A CN117989031A CN202410147444.1A CN202410147444A CN117989031A CN 117989031 A CN117989031 A CN 117989031A CN 202410147444 A CN202410147444 A CN 202410147444A CN 117989031 A CN117989031 A CN 117989031A
- Authority
- CN
- China
- Prior art keywords
- engine
- motor
- control unit
- management system
- starting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 54
- 230000004044 response Effects 0.000 claims abstract description 6
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 230000005856 abnormality Effects 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 239000003550 marker Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 7
- 230000015654 memory Effects 0.000 description 21
- 238000004891 communication Methods 0.000 description 10
- 238000003745 diagnosis Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits specially adapted for starting of engines
- F02N11/0803—Circuits specially adapted for starting of engines characterised by means for initiating engine start or stop
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Hybrid Electric Vehicles (AREA)
Abstract
The invention relates to the technical field of control of engine systems of hybrid vehicles, and discloses a hybrid vehicle starting control method, a device, a vehicle and a storage medium, wherein the method comprises the following steps: the control unit of the whole vehicle power system receives the engine start success zone bit sent by the engine management system, and judges the start state of the engine in response to receiving the engine start success zone bit; when the control unit of the whole vehicle power system judges that the engine fails to start, the motor is controlled to stop working, a table lookup time threshold is set at intervals, an engine starting request is sent to the motor control unit and an engine management system, and the starting state of the engine is judged; and when the number of times of the failure of starting the engine reaches the first set number of times, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit and sends a reset request to the engine management system. Thereby, the vehicle power recovery possibility of the vehicle in some recoverable simple failure situations is greatly increased.
Description
Technical Field
The invention relates to the technical field of control of engine systems of hybrid vehicles, in particular to a hybrid vehicle starting control method, a device, a vehicle and a storage medium.
Background
The engine of the traditional vehicle runs independently, and under the condition that the engine is judged to be successfully started by mistake, the engine can stop running under the action of resistance. The whole vehicle power control logic of the hybrid vehicle is complex, and a PCU (Power Control Unit, whole vehicle power system control unit) is generally required to be configured to coordinate the power control of the whole vehicle. In the synchronous working process of the engine and the motor of the hybrid vehicle, aiming at the problem of misjudgment of successful starting of the engine, under the condition that the motor drives the engine to work, the engine cannot stop running under the action of resistance, and the problem of excessive battery loss is needed at the moment. In this regard, the following operations are mainly adopted at present to solve the problem of excessive battery loss caused by the fact that the hybrid vehicle misjudges that the engine is started successfully. Specifically, after receiving a signal of successful engine start, determining whether the engine is successful or not according to actual torque of the engine and the motor, and controlling the motor to stop working under the condition of judging that the engine is failed to start. The motor stopping operation is simply executed, so that the simple fault recoverability of the vehicle engine is obviously reduced, and the user experience is seriously influenced.
Disclosure of Invention
The invention aims to provide a hybrid vehicle starting control method, a device, a vehicle and a storage medium, which are used for solving the following problems caused by the fact that in the starting process of an engine, if the engine simply executes motor stopping operation in the prior art: the simple fault recoverability of the vehicle engine is affected, and the user experience is seriously affected.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
In a first aspect, the present invention provides a hybrid vehicle start control method, including: the control unit of the whole vehicle power system receives an engine start success zone bit sent by an engine management system; the control unit of the whole vehicle power system judges the starting state of the engine in response to receiving the successful starting marker bit of the engine; when the control unit of the whole vehicle power system judges that the engine fails to start, the motor is controlled to stop working, a table lookup time threshold is set at intervals, an engine starting request is sent to the motor control unit and an engine management system, and the starting state of the engine is judged; and when the number of times of the failure of starting the engine reaches the first set number of times, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit and sends a reset request to the engine management system.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, when the engine starting success flag bit sent by the engine management system is received, the starting state of the engine is judged again, if the actual starting state of the engine is judged to be the starting failure, the motor is controlled to stop working, the table lookup time threshold value is checked at intervals, the engine starting request is sent to the motor control unit and the engine management system, and the engine is tried to be started again. Further, when it is determined that the number of times of engine start failure reaches the first set number of times, a request for stopping motor operation is sent to the motor control unit, and a reset request is sent to the engine management system. Thus, the motor is prevented from being directly controlled to stop working when the actual starting state of the engine is judged to be failed in starting. The power recovery potential of the vehicle in some recoverable simple fault conditions is greatly increased.
In an alternative embodiment, determining a start-up state of an engine includes: when receiving a successful engine start flag bit, the whole vehicle power system control unit sends a motor rotating speed mode request containing a target motor rotating speed to the motor control unit so that the motor control unit controls the motor to enter a rotating speed control state at the target motor rotating speed; the whole vehicle power system control unit receives the actual torque of the engine sent by the engine management system and the actual torque of the motor sent by the motor control unit; and the control unit of the whole vehicle power system judges the starting state of the engine according to the actual torque of the engine and the actual torque of the motor.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, when the engine starting success zone bit sent by the engine management system is received, the whole vehicle power system control unit obtains the actual engine torque through the engine management system, obtains the actual motor torque through the motor control unit, and judges the actual starting state of the engine according to the actual engine torque and the actual motor torque. Therefore, the actual starting state of the engine is determined through the actual torque of the engine and the motor of the vehicle, and the problem of excessive battery loss caused by misjudgment of the starting state of the engine is avoided.
In an alternative embodiment, determining the start-up state of the engine based on the actual torque of the engine and the actual torque of the motor includes: and if the duration that the actual torque of the engine is greater than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is greater than the second preset torque is longer than the second preset duration, judging that the engine is failed to start.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, if the duration that the actual torque of the engine is larger than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is larger than the second preset torque is longer than the second preset duration, the engine starting failure is judged. The engine start state is more accurately judged by using the actual torque in a period of time.
In an alternative embodiment, after sending the reset request to the engine management system, the method further comprises: when the engine management system judges that the engine speed is zero, the engine management system does not have a start-forbidden fault, the engine management system does not send a start success mark, and the engine management system suppresses the oil injection mark position, an engine start abnormality reset feedback mark position signal is sent to a gateway of the vehicle so as to complete the reset of the engine management system.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, the engine management system timely judges a plurality of reset conditions after receiving the reset request and resets the reset conditions, so that necessary conditions are provided for starting the engine. The possibility of engine power recovery increases.
In an alternative embodiment, after sending the reset request to the engine management system, the method further comprises: after the engine management system is reset, sending an engine starting request to the motor control unit and the engine management system again, and judging the starting state of the engine; if the engine is judged to be failed to start, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit, so that the motor control unit controls the motor to stop working; and if the engine is judged to be successfully started, outputting the engine starting success state information.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, after the engine management system is reset, the engine starting request is sent to the motor control unit and the engine management system again, and the engine is restarted again, so that the possibility of successful restarting of the engine is further increased.
In an alternative embodiment, sending a reset request to an engine management system includes: and sending an engine starting abnormality flag bit to an engine management system.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, after the engine management system is reset, the engine starting request is sent to the motor control unit and the engine management system again in a mode of sending the engine starting abnormal flag bit to the engine management system, and the engine is restarted again, so that the possibility of successful restarting of the engine is further increased.
In a second aspect, the present invention also provides a hybrid vehicle start control apparatus, including: the receiving module is used for receiving an engine start success zone bit sent by the engine management system by the whole vehicle power system control unit; the first judging module is used for judging the starting state of the engine by the control unit of the whole vehicle power system in response to receiving the successful starting marker bit of the engine; the restarting module is used for controlling the motor to stop working when the whole vehicle power system control unit judges that the engine fails to start, checking a table for a time threshold at intervals, sending an engine starting request to the motor control unit and the engine management system, and judging the starting state of the engine; and the reset request module is used for sending a motor work stopping request to the motor control unit and sending a reset request to the engine management system when the whole vehicle power system control unit judges that the number of times of engine start failure reaches the first set number of times.
In an alternative embodiment, the first determining module includes: the motor rotating speed mode request unit is used for sending a motor rotating speed mode request containing the target motor rotating speed to the motor control unit when the whole vehicle power system control unit receives the successful engine starting flag bit, so that the motor control unit controls the motor to enter a rotating speed control state at the target motor rotating speed; the actual parameter receiving unit is used for receiving the actual torque of the engine sent by the engine management system and the actual torque of the motor sent by the motor control unit by the whole vehicle power system control unit; and the starting judging unit is used for judging the starting state of the engine according to the actual torque of the engine and the actual torque of the motor by the control unit of the whole vehicle power system.
In an alternative embodiment, the start-up judging unit judges the start-up state of the engine based on the actual torque of the engine and the actual torque of the motor, including: and if the duration that the actual torque of the engine is greater than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is greater than the second preset torque is longer than the second preset duration, judging that the engine is failed to start.
In an alternative embodiment, the apparatus further comprises: and the reset execution module is used for sending an abnormal engine starting reset feedback mark position signal to a gateway of the vehicle when the engine management system judges that the engine rotating speed is zero, the engine management system does not have a start-forbidden fault, the engine management system does not send a start success mark and the engine management system suppresses the oil injection mark position, so as to finish resetting the engine management system.
In an alternative embodiment, the apparatus further comprises: the second judging module is used for sending an engine starting request to the motor control unit and the engine management system again after the engine management system sends a reset request to the engine management system and after the engine management system completes reset, and judging the starting state of the engine; the stopping control module is used for sending a motor stopping request to the motor control unit by the whole vehicle power system control unit if the starting failure of the engine is judged, so that the motor control unit controls the motor to stop working; and the starting information output module is used for outputting the successful starting state information of the engine if the engine is judged to be successful in starting.
In an alternative embodiment, the reset request module includes: and the abnormal setting unit is used for sending an engine starting abnormal flag bit to the engine management system.
In a third aspect, the present invention provides a vehicle including the hybrid vehicle start control method of the second aspect or any one of the embodiments corresponding thereto.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the hybrid vehicle start-up control method of the first aspect or any one of the embodiments corresponding thereto.
The invention has the beneficial effects that:
According to the hybrid vehicle starting control method provided by the embodiment of the invention, when the engine starting success flag bit sent by the engine management system is received, the starting state of the engine is judged again, if the actual starting state of the engine is judged to be the starting failure, the motor is controlled to stop working, the table lookup time threshold is kept at intervals, the engine starting request is sent to the motor control unit and the engine management system, and the engine is tried to be started again. Further, when it is determined that the number of times of engine start failure reaches the first set number of times, a request for stopping motor operation is sent to the motor control unit, and a reset request is sent to the engine management system. Thus, the motor is prevented from being directly controlled to stop working when the actual starting state of the engine is judged to be failed in starting. The power recovery potential of the vehicle in some recoverable simple fault conditions is greatly increased.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the composition of an exemplary scene hybrid vehicle powertrain to which the hybrid vehicle launch control method of the embodiment of the present invention is applied;
FIG. 2 is a flow chart of a hybrid vehicle launch control method according to an embodiment of the present invention;
FIG. 3 is a flow chart of another hybrid vehicle launch control method according to an embodiment of the present invention;
fig. 4 is a flowchart schematically showing a specific application example of a hybrid vehicle start control method according to an embodiment of the present invention;
fig. 5 is a block diagram of a structure of a hybrid vehicle start control apparatus according to an embodiment of the invention;
Fig. 6 is a schematic hardware configuration of a control device of a vehicle according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to the schematic configuration of the hybrid vehicle powertrain shown in fig. 1, first, the engine torque and the like of the vehicle are analyzed from the operation modes such as the series mode, the parallel mode, the series-parallel mode and the like of the vehicle. The power system of the hybrid vehicle comprises three power sources, namely a driving motor 101, a generator 102 and an engine 103, and the three power sources can output torque to drive the vehicle in different combinations under the action of driving wheels 104 according to working conditions. The combination of the power sources can be realized by controlling the clutch 105, when the clutch 105 is opened, the vehicle is in the electric-only operation mode or the series operation mode, and the output torque of the driving wheel 104 is provided by the driving motor 101. When the clutches are engaged, the vehicle is in a parallel operating mode and the output torque of the drive wheels 104 is provided by means of the drive motor 101 and the engine 102 together or by means of the engine 102 alone.
In the related art, when receiving an engine start success flag bit sent by an EMS (ENGINE MANAGEMENT SYSTEM ) (not shown), a PCU (not shown) sends a motor rotation speed mode request including a target motor rotation speed to a motor control unit (Power Electronic Unit, PEU) 106, so that the PEU controls a driving motor 101 to enter a rotation speed control state at the target motor rotation speed. The PCU receives the engine actual torque transmitted from the EMS and the motor actual torque transmitted from the PEU, and determines whether the engine 103 is started successfully according to the engine actual torque and the motor actual torque. If it is determined that the engine 103 has failed to start, the PCU transmits a motor stop request to the PEU, and the PEU controls the drive motor 101 to stop operating. If it is determined that the engine 103 is successfully started, engine start success state information is output.
In this way, whether the engine 103 is successfully started is determined based on the engine actual torque and the motor actual torque, and although the problem of excessive loss of the power battery 107 caused by the successful start of the erroneous determination engine 103 can be reduced or avoided, the possibility of power restoration of the vehicle is reduced by directly stopping the drive motor 101. Aiming at the situation that the spark plug is carbon-deposited, the oil way is thin, the cam shaft sensor is failed, the oil pump circuit is failed, the ignition coil wire harness is failed and the like, if the motor is stopped based on the misjudgment of successful starting of the engine 103, the user experience is seriously affected.
It should be noted that, for convenience of description of the solution, the driving motor 101 in fig. 1 is described as a motor at other positions in the document.
Based on the above analysis, the present invention is directed to increasing the likelihood of the vehicle recovering power in the event of recoverable failures such as spark plug carbon build-up, oil passage dilution, camshaft sensor failure, oil pump circuit failure, and ignition coil harness failure. A hybrid vehicle start control method is provided.
In particular, according to an embodiment of the present invention, there is provided a hybrid vehicle start control method embodiment, it is to be noted that the steps shown in the flowchart of the drawings may be performed in a computer system such as a set of computer executable instructions, and that although a logical order is shown in the flowchart, in some cases the steps shown or described may be performed in an order different from that herein.
In the present embodiment, there is provided a hybrid vehicle start control method, which can be used for a control apparatus of a vehicle or the like, fig. 2 is a flowchart of a hybrid vehicle start control method according to an embodiment of the present invention, as shown in fig. 2, the flowchart including the steps of:
step S201, the whole vehicle power system control unit receives an engine start success zone bit sent by an engine management system.
When the EMS (ENERGY MANAGEMENT SYSTEM, engine management system) determines that the engine start is successful, an engine start success flag bit is sent. However, the possibility of misjudgment exists in the EMS, so when the PCU (Power Control Unit, the whole vehicle power system control unit) receives the engine start success flag bit sent by the EMS, the following operations of step S202 to step S204 are added, and the problems of excessive battery loss and the like caused by misjudgment of the engine start state are avoided.
Step S202, the whole vehicle power system control unit responds to the received successful engine start flag bit, controls the motor to stop working, checks a table time threshold at intervals, and judges the starting state of the engine.
In an alternative embodiment of the invention, the PCU controls the motor to stop operating in response to receiving the engine start success flag. And when the table lookup time threshold is set at intervals, a motor rotation speed mode request containing the target motor rotation speed is sent to a PEU (motor control unit) to enable the PEU to control the motor to enter a rotation speed control state at the target motor rotation speed. Thereby obtaining actual operation parameters of the motor and the engine, and judging the starting state of the engine according to the obtained actual operation parameters. The actual operating parameters here may include the actual torque, etc.
In step S203, when the vehicle power system control unit determines that the engine fails to start, the vehicle power system control unit sends an engine start request to the motor control unit and the engine management system, and determines the start state of the engine.
In an alternative embodiment of the invention, when the PCU determines that the actual starting state of the engine is failed starting according to the acquired actual running parameters of the motor and the engine, the engine is tried to be restarted, so that the faults of the vehicle, such as carbon deposition of a spark plug, thin oil way, faults of a cam shaft sensor, faults of an oil pump circuit, faults of an ignition coil wire harness and the like, which can be repaired by self are quickly repaired, and the possibility of power recovery of the vehicle is remarkably increased.
Step S204, when the whole vehicle power system control unit judges that the number of times of engine start failure reaches the first set number of times, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit and sends a reset request to the engine management system.
In an alternative embodiment of the invention, when the whole vehicle power system control unit determines that the number of times of engine start failure reaches a first set number of times, a reset request is sent to the ECU (Engine Control Unit, an engine management system) to reset the ECU. Therefore, the fault repair probability of self-repair of spark plug carbon deposition, oil circuit dilution, cam shaft sensor fault, oil pump circuit fault, ignition coil wire harness fault and the like of the vehicle is further increased, and the probability of power recovery of the vehicle is further improved.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, when the engine starting success flag bit sent by the engine management system is received, the starting state of the engine is judged again, and if the actual starting state of the engine is judged to be the failure of starting, an engine starting request is sent to the motor control unit and the engine management system, and the engine is tried to be started again. Further, when it is determined that the number of times of engine start failure reaches the first set number of times, a request for stopping motor operation is sent to the motor control unit, and a reset request is sent to the engine management system. Thus, the motor is prevented from being directly controlled to stop working when the actual starting state of the engine is judged to be failed in starting. The possibility of vehicle power restoration in some recoverable simple fault conditions is greatly increased.
In the present embodiment, there is provided a hybrid vehicle start control method, which can be applied to the control apparatus of a vehicle and the like described above, and fig. 3 is a flowchart of another hybrid vehicle start control method according to an embodiment of the present invention, as shown in fig. 3, the flowchart including the steps of:
Step S301, a whole vehicle power system control unit receives an engine start success zone bit sent by an engine management system.
Please refer to step S201 in the embodiment shown in fig. 2 in detail, which is not described herein.
Step S302, the whole vehicle power system control unit responds to the received successful engine start flag bit to judge the start state of the engine.
Specifically, the step S302 may include:
In step S3021, when receiving the successful engine start flag bit, the vehicle power system control unit sends a motor rotation speed mode request including the target motor rotation speed to the motor control unit, so that the motor control unit controls the motor to enter a rotation speed control state at the target motor rotation speed.
When the PCU receives the engine start success zone bit sent by the EMS, a motor rotating speed mode request containing the target motor rotating speed is sent to the PEU (motor control unit), so that the PEU controls the motor to enter a rotating speed control state at the target motor rotating speed.
In step S3022, the vehicle powertrain control unit receives the engine actual torque sent by the engine management system and the motor actual torque sent by the motor control unit.
The EMS can acquire the actual torque of the engine and send it to the PCU, and the PEU can acquire the actual torque of the motor and send it to the PCU. Thus, the PCU can receive the engine actual torque transmitted from the EMS and the motor actual torque transmitted from the PEU.
In step S3023, the vehicle powertrain control unit determines the start-up state of the engine according to the actual torque of the engine and the actual torque of the motor.
In some alternative embodiments, if the period of time that the actual torque of the engine is greater than the first preset torque continues for a first preset period of time and the period of time that the actual torque of the motor is greater than the second preset torque continues for a second preset period of time, then the engine start failure is determined. The starting state of the engine is thereby judged based on the engine actual torque and the motor actual torque.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, when the engine starting success zone bit sent by the engine management system is received, the whole vehicle power system control unit obtains the actual engine torque through the engine management system, obtains the actual motor torque through the motor control unit, and judges the actual starting state of the engine according to the actual engine torque and the actual motor torque. Therefore, the actual starting state of the engine is determined through the actual torque of the engine and the motor of the vehicle, and the problem of excessive battery loss caused by misjudgment of the starting state of the engine is avoided.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, if the duration that the actual torque of the engine is larger than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is larger than the second preset torque is longer than the second preset duration, the engine starting failure is judged. The engine start state is more accurately judged by using the actual torque in a period of time.
Step S303, when the whole vehicle power system control unit judges that the engine fails to start, the motor is controlled to stop working, a table look-up time threshold value is checked at intervals, an engine start request is sent to the motor control unit and the engine management system, and the starting state of the engine is judged.
Please refer to step S203 in the embodiment shown in fig. 2 in detail, which is not described herein.
Step S304, when the whole vehicle power system control unit judges that the number of times of engine start failure reaches a first set number of times, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit and sends a reset request to the engine management system.
Please refer to step S204 in the embodiment shown in fig. 2 in detail, which is not described herein.
And step S305, when the engine management system determines that the engine speed is zero, the engine management system does not have a start-forbidden fault, the engine management system does not send a start success mark and the engine management system suppresses the oil injection mark position, sending an abnormal engine start reset feedback mark position signal to a gateway of the vehicle so as to complete the reset of the engine management system.
After the EMS receives the engine starting abnormality flag bit sent by the PCU, the following conditions need to be determined firstly: a. the engine speed is 0; b. the EMS has no fault for prohibiting starting; c. the EMS does not send out a starting success mark; d. the EMS suppresses the oil injection flag bit. After the 4 conditions are met simultaneously, the EMS sends an engine starting abnormal resetting feedback flag bit to the gateway, and other controllers such as the gateway controller and the like stop making communication diagnosis to the EMS simultaneously. When the time for stopping communication diagnosis of the EMS by other controllers exceeds the reset waiting time threshold, the EMS can perform reset operation. And when the time for stopping the communication diagnosis of the EMS by the other controllers exceeds the threshold of the shielding communication diagnosis time, the other controllers resume the communication diagnosis of the EMS.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, the engine management system timely judges a plurality of reset conditions after receiving the reset request and resets the reset conditions, so that necessary conditions are provided for starting the engine. The possibility of engine power recovery increases.
Step S306, after the reset request is sent to the engine management system, after the engine management system completes the reset, the engine start request is sent to the motor control unit and the engine management system again, and the start state of the engine is judged; if it is determined that the engine start fails, step S307 is executed, and if it is determined that the engine start is successful, step S308 is executed.
In some alternative embodiments, after sending a reset request to the engine management system and the engine management system completes the reset, the PCU determines whether the engine is started successfully according to the actual torque of the engine and the actual torque of the motor, if it is determined that the engine is started successfully, the PCU sends a request for stopping motor operation to the PEU, so that the PEU controls the motor to stop operation, and if it is determined that the engine is started successfully, the PCU outputs information about the successful state of the engine start.
Step S307, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit, so that the motor control unit controls the motor to stop working.
Here, in the case that repeated attempts to start the engine fail, the entire vehicle power system control unit transmits a motor stop operation request to the motor control unit, and the motor control unit is required to control the motor to stop operation in a general manner in the art, which is not limited in the present invention.
Step S308, output the engine start success status information.
Here, the engine start success state information may be output by a method commonly used in the art, and the present invention is not limited thereto.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, after the engine management system is reset, the engine starting request is sent to the motor control unit and the engine management system again, and the engine is restarted again, so that the possibility of successful restarting of the engine is further increased.
In an alternative embodiment, the sending of the reset request to the engine management system is implemented by sending an engine start exception flag to the engine management system.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, after the engine management system is reset, the engine starting request is sent to the motor control unit and the engine management system again in a mode of sending the engine starting abnormal flag bit to the engine management system, and the engine is restarted again, so that the possibility of successful restarting of the engine is further increased.
According to the hybrid vehicle starting control method provided by the embodiment of the invention, the engine management system is sent with the engine starting abnormal flag bit, so that the reset request is sent to the engine management system, the condition is provided for restarting the engine, and the motor is prevented from being directly controlled to stop working when the actual starting state of the engine is judged to be the failure of starting. The possibility of vehicle power restoration in some recoverable simple fault conditions is greatly increased.
In the present embodiment, there is provided a hybrid vehicle start control method, which can be used for a control apparatus of a vehicle or the like, fig. 4 is a flowchart of a hybrid vehicle start control method according to an embodiment of the present invention, as shown in fig. 4, the flowchart including the steps of:
The PCU determines whether the engine has started successfully by: when the PCU receives an engine start success flag bit sent by an EMS (engine management system), a motor rotation speed mode request containing a target motor rotation speed is sent to the PEU, so that the PEU controls the motor to enter a rotation speed control state at the target motor rotation speed. The PCU receives the engine actual torque sent by the EMS and the motor actual torque sent by the PEU, and judges whether the engine is started successfully or not according to the engine actual torque and the motor actual torque. If the engine is judged to be failed to start, the PCU sends a motor work stopping request to the PEU, so that the PEU controls the motor to stop working. And if the engine is judged to be successfully started, outputting the engine starting success state information.
If the starting failure is judged and the engine is stopped, the waiting time exceeds the table look-up time threshold value, then the engine is tried to be started again and whether the engine is started successfully is detected, and if the starting failure is judged, the engine and the motor are stopped; and if the engine is judged to be started successfully, outputting an engine starting success state. If the second step of operation is repeated for the calibration times, the failure of starting the engine is still judged, the engine and the motor are stopped, and after the waiting time exceeds the table look-up time threshold, the PCU sends out the abnormal starting sign position setting of the engine to the EMS.
Further, the EMS receives the engine start abnormality flag bit sent by the PCU, and needs to determine the following information: a. the engine speed is 0; b. the EMS has no fault for prohibiting starting; c. the EMS does not send out a starting success mark; d. the EMS suppresses the oil injection flag bit. After the 4 conditions are met simultaneously, the EMS sends an engine starting abnormality resetting feedback flag bit to the gateway, other controllers stop making communication diagnosis on the EMS at the same time, the EMS performs resetting operation after the time exceeds a resetting waiting time threshold, and the other controllers resume making communication diagnosis on the EMS after the time exceeds a shielding communication diagnosis time threshold. Here, the other controllers may include a vehicle-level meter controller, a gateway, a driving motor controller.
Note that, in fig. 4, "the EMS enters the start state" means that the EMS controls the engine to start. In addition, all the times, time, etc. related to the present invention may be set according to actual requirements, for example: the time threshold value of table lookup and the first set times. The present invention is not particularly limited thereto.
Further, the operation of judging whether the engine is started successfully is repeatedly executed, and after the set number of times is reached, if the engine is still judged to be started failure, the engine and the motor are stopped. If it is determined that the engine start is successful, the engine start success state information is output, and the operation of attempting to restart the engine is exited.
The embodiment also provides a hybrid vehicle start control device, which is used for implementing the above embodiment and the preferred implementation, and is not described in detail. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.
The present embodiment provides a hybrid vehicle start control apparatus, as shown in fig. 5, including:
the receiving module 501 is configured to receive an engine start success flag bit sent by an engine management system by using a control unit of the whole vehicle power system.
The first judging module 502 is configured to, in response to receiving the engine start success flag bit, judge a start state of the engine by using the vehicle power system control unit.
And the restarting module 503 is configured to control the motor to stop working when the vehicle power system control unit determines that the engine fails to start, send an engine starting request to the motor control unit and the engine management system at intervals of a table lookup time threshold, and determine a starting state of the engine.
And the reset request module 504 is configured to send a request for stopping motor operation to the motor control unit and send a reset request to the engine management system when the number of times of the start failure of the engine reaches the first set number of times.
In an alternative embodiment, the first determining module 502 includes:
And the motor rotating speed mode request unit is used for sending a motor rotating speed mode request containing the target motor rotating speed to the motor control unit when the whole vehicle power system control unit receives the successful engine starting flag bit, so that the motor control unit controls the motor to enter a rotating speed control state at the target motor rotating speed.
The actual parameter receiving unit is used for receiving the actual engine torque sent by the engine management system and the actual motor torque sent by the motor control unit by the whole vehicle power system control unit.
And the starting judging unit is used for judging the starting state of the engine according to the actual torque of the engine and the actual torque of the motor by the control unit of the whole vehicle power system.
In an alternative embodiment, the start-up judging unit judges the start-up state of the engine based on the actual torque of the engine and the actual torque of the motor, including:
and if the duration that the actual torque of the engine is greater than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is greater than the second preset torque is longer than the second preset duration, judging that the engine is failed to start.
In an alternative embodiment, the apparatus further comprises:
And the reset execution module is used for sending an abnormal engine starting reset feedback mark position signal to a gateway of the vehicle when the engine management system judges that the engine rotating speed is zero, the engine management system does not have a start-forbidden fault, the engine management system does not send a start success mark and the engine management system suppresses the oil injection mark position, so as to finish resetting the engine management system.
In an alternative embodiment, the apparatus further comprises:
And the second judging module is used for sending an engine starting request to the motor control unit and the engine management system again after the engine management system sends a reset request to the engine management system and after the engine management system completes reset, and judging the starting state of the engine.
And the shutdown control module is used for sending a motor stopping request to the motor control unit by the whole vehicle power system control unit if the engine starting failure is judged, so that the motor control unit controls the motor to stop working.
And the starting information output module is used for outputting the successful starting state information of the engine if the engine is judged to be successful in starting.
In an alternative embodiment, the reset request module 504 includes: and the abnormal setting unit is used for sending an engine starting abnormal flag bit to the engine management system.
Further functional descriptions of the above respective modules and units are the same as those of the above corresponding embodiments, and are not repeated here.
The hybrid vehicle start control apparatus in this embodiment is presented in the form of a functional unit, where the unit refers to an ASIC (Application SPECIFIC INTEGRATED Circuit) Circuit, a processor and a memory that execute one or more software or firmware programs, and/or other devices that can provide the above functions.
The embodiment of the invention also provides a vehicle, which is provided with the hybrid vehicle control device shown in the figure 5.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a control device for a vehicle according to an alternative embodiment of the present invention, as shown in fig. 6, the control device for a vehicle includes: one or more processors 10, memory 20, and interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The various components are communicatively coupled to each other using different buses and may be mounted on a common motherboard or in other manners as desired. The processor may process instructions executed within the control device of the vehicle, including instructions stored in or on memory to display graphical information of the GUI on an external input/output device, such as a display device coupled to the interface. In some alternative embodiments, multiple processors and/or multiple buses may be used, if desired, along with multiple memories and multiple memories. Also, a plurality of control devices of the vehicle may be connected, each device providing a part of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). One processor 10 is illustrated in fig. 6.
The processor 10 may be a central processor, a network processor, or a combination thereof. The processor 10 may further include a hardware chip, among others. The hardware chip may be an application specific integrated circuit, a programmable logic device, or a combination thereof. The programmable logic device may be a complex programmable logic device, a field programmable gate array, a general-purpose array logic, or any combination thereof.
Wherein the memory 20 stores instructions executable by the at least one processor 10 to cause the at least one processor 10 to perform a method for implementing the embodiments described above.
The memory 20 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the control device of the vehicle, or the like. In addition, the memory 20 may include high-speed random access memory, and may also include non-transitory memory, such as at least one magnetic disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, memory 20 may optionally include memory located remotely from processor 10, which may be connected to the vehicle's control device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
Memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk, or solid state disk; the memory 20 may also comprise a combination of the above types of memories.
The control device of the vehicle further comprises a communication interface 30 for the control device of the vehicle to communicate with other devices or a communication network.
The embodiments of the present invention also provide a computer readable storage medium, and the method according to the embodiments of the present invention described above may be implemented in hardware, firmware, or as a computer code which may be recorded on a storage medium, or as original stored in a remote storage medium or a non-transitory machine readable storage medium downloaded through a network and to be stored in a local storage medium, so that the method described herein may be stored on such software process on a storage medium using a general purpose computer, a special purpose processor, or programmable or special purpose hardware. The storage medium can be a magnetic disk, an optical disk, a read-only memory, a random access memory, a flash memory, a hard disk, a solid state disk or the like; further, the storage medium may also comprise a combination of memories of the kind described above. It will be appreciated that a computer, processor, microprocessor controller or programmable hardware includes a storage element that can store or receive software or computer code that, when accessed and executed by the computer, processor or hardware, implements the methods illustrated by the above embodiments.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (14)
1. A hybrid vehicle start control method, characterized by comprising:
The control unit of the whole vehicle power system receives an engine start success zone bit sent by an engine management system;
The whole vehicle power system control unit responds to the received successful engine start flag bit and judges the start state of the engine;
When the control unit of the whole vehicle power system judges that the engine fails to start, the motor is controlled to stop working, a table lookup time threshold is set at intervals, an engine starting request is sent to the motor control unit and an engine management system, and the starting state of the engine is judged;
And when the number of times of the engine start failure reaches the first set number of times, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit and sends a reset request to the engine management system.
2. The method according to claim 1, wherein the determining the start-up state of the engine includes:
When receiving a successful engine start flag bit, the whole vehicle power system control unit sends a motor rotating speed mode request containing a target motor rotating speed to the motor control unit, so that the motor control unit controls the motor to enter a rotating speed control state at the target motor rotating speed;
The whole vehicle power system control unit receives the actual torque of the engine sent by the engine management system and the actual torque of the motor sent by the motor control unit;
and the whole vehicle power system control unit judges the starting state of the engine according to the actual torque of the engine and the actual torque of the motor.
3. The method of claim 2, wherein determining the start-up state of the engine based on the actual engine torque and the actual motor torque comprises:
And if the duration that the actual torque of the engine is greater than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is greater than the second preset torque is longer than the second preset duration, judging that the engine is failed to start.
4. The method of claim 1, wherein after sending a reset request to the engine management system, the method further comprises:
When the engine management system judges that the engine rotation speed is zero, the engine management system does not have a start-forbidden fault, the engine management system does not send a start success mark, and the engine management system suppresses the oil injection mark position, an engine start abnormality reset feedback mark position signal is sent to a gateway of a vehicle so as to finish resetting the engine management system.
5. The method of claim 1, wherein after sending a reset request to the engine management system, the method further comprises:
after the engine management system is reset, sending an engine starting request to the motor control unit and the engine management system again, and judging the starting state of the engine;
If the engine is judged to be failed to start, the whole vehicle power system control unit sends a motor work stopping request to the motor control unit, so that the motor control unit controls the motor to stop working;
and if the engine is judged to be successfully started, outputting the engine starting success state information.
6. The method of claim 1, wherein the sending a reset request to the engine management system comprises: and sending an engine starting abnormal flag bit to the engine management system.
7. A hybrid vehicle start control apparatus, characterized by comprising:
The receiving module is used for receiving an engine start success zone bit sent by the engine management system by the whole vehicle power system control unit;
the first judging module is used for judging the starting state of the engine by the control unit of the whole vehicle power system in response to receiving the successful starting marker bit of the engine;
the restarting module is used for controlling the motor to stop working when the whole vehicle power system control unit judges that the engine fails to start, checking a table for a time threshold at intervals, sending an engine starting request to the motor control unit and the engine management system, and judging the starting state of the engine;
and the reset request module is used for sending a motor work stopping request to the motor control unit and sending a reset request to the engine management system when the whole vehicle power system control unit judges that the number of times of the engine start failure reaches the first set number of times.
8. The apparatus of claim 1, wherein the first determining module comprises:
The motor rotating speed mode request unit is used for sending a motor rotating speed mode request containing the target motor rotating speed to the motor control unit when the whole vehicle power system control unit receives the successful engine starting flag bit, so that the motor control unit controls the motor to enter a rotating speed control state at the target motor rotating speed;
The actual parameter receiving unit is used for receiving the actual torque of the engine sent by the engine management system and the actual torque of the motor sent by the motor control unit by the whole vehicle power system control unit;
and the starting judging unit is used for judging the starting state of the engine according to the actual torque of the engine and the actual torque of the motor by the control unit of the whole vehicle power system.
9. The apparatus according to claim 8, wherein the start-up judging unit judges a start-up state of the engine based on the engine actual torque and the motor actual torque, comprising:
And if the duration that the actual torque of the engine is greater than the first preset torque is longer than the first preset duration and the duration that the actual torque of the motor is greater than the second preset torque is longer than the second preset duration, judging that the engine is failed to start.
10. The apparatus of claim 1, wherein the apparatus further comprises:
And the reset execution module is used for sending an abnormal engine starting reset feedback mark position signal to a gateway of a vehicle when the engine management system judges that the engine rotating speed is zero, the engine management system does not have a start-up prohibition fault, the engine management system does not send a start success mark and the engine management system suppresses the oil injection mark position after sending a reset request to the engine management system, so as to finish resetting the engine management system.
11. The apparatus of claim 1, wherein the apparatus further comprises:
The second judging module is used for sending an engine starting request to the motor control unit and the engine management system again after the engine management system sends a reset request to the engine management system and after the engine management system completes reset, and judging the starting state of the engine;
the stopping control module is used for sending a motor stopping request to the motor control unit by the whole vehicle power system control unit if the starting failure of the engine is judged, so that the motor control unit controls the motor to stop working;
and the starting information output module is used for outputting the successful starting state information of the engine if the engine is judged to be successful in starting.
12. The apparatus of claim 1, wherein the reset request module comprises: and the abnormality setting unit is used for sending an engine starting abnormality flag bit to the engine management system.
13. A vehicle provided with a hybrid vehicle start control apparatus according to any one of claims 7 to 12.
14. A computer-readable storage medium having stored thereon computer instructions for causing a computer to execute the hybrid vehicle start control method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410147444.1A CN117989031A (en) | 2024-01-31 | 2024-01-31 | Hybrid vehicle starting control method and device, vehicle and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410147444.1A CN117989031A (en) | 2024-01-31 | 2024-01-31 | Hybrid vehicle starting control method and device, vehicle and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117989031A true CN117989031A (en) | 2024-05-07 |
Family
ID=90886862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410147444.1A Pending CN117989031A (en) | 2024-01-31 | 2024-01-31 | Hybrid vehicle starting control method and device, vehicle and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117989031A (en) |
-
2024
- 2024-01-31 CN CN202410147444.1A patent/CN117989031A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7693625B2 (en) | State of health monitoring and reset methods and systems for on-board device driver integrated circuits | |
| US8712635B2 (en) | In-vehicle electronic control apparatus having monitoring control circuit | |
| US10268557B2 (en) | Network monitoring device, network system, and computer program product | |
| JP3255693B2 (en) | Automotive multi-computer system | |
| US7013241B2 (en) | Electronic control unit | |
| CN110515371A (en) | Detection method for ECU data tampering, first controller and ECU | |
| CN111038490A (en) | Method and system for identifying engine combustion and readable storage medium | |
| JP4990361B2 (en) | Actuating system for automobile drive | |
| CN114385421A (en) | Data storage method and device, electronic equipment and storage medium | |
| JP3835312B2 (en) | Electronic control device for vehicle | |
| US12117954B2 (en) | Method of dialogue with a computer on an on-board bus of a vehicle | |
| CN117989031A (en) | Hybrid vehicle starting control method and device, vehicle and storage medium | |
| CN108803581B (en) | Fault remote diagnosis method based on expert template | |
| CN116872909A (en) | Plug-in hybrid electric vehicle control method, system and storage medium | |
| US11584382B2 (en) | System and method for malfuncton operation machine stability determination | |
| CN111757829A (en) | Control apparatus and method for controlling operations of internal combustion engine and motor in hybrid vehicle | |
| CN110091858B (en) | Self-learning method for engine on hybrid vehicle | |
| KR101063217B1 (en) | How to prevent restart error after shutting off hybrid vehicle controller | |
| CN115962079B (en) | Starter control method, starter control device, vehicle-mounted equipment and storage medium | |
| CN116085163B (en) | Control method and device, equipment and computer readable storage medium | |
| CN116104937B (en) | Method and device for updating hard dead center position of vehicle gear and vehicle-mounted terminal | |
| CN114285915B (en) | ECU fault cause determination method, system, storage medium and device | |
| JP7099293B2 (en) | Electronic control device | |
| JPH1196082A (en) | Vehicle memory rewriting device | |
| CN119659583A (en) | Motor control method, motor control device, vehicle and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |