CN108302192B - Gearbox adaptive learning access method and device - Google Patents

Abstract

The invention provides a method and a device for entering a gearbox self-learning state, and relates to the field of gearbox inspection. When the transmission self-learning state entry method and device meet the factory self-learning conditions, the automatic transmission controller is used to send a control command to the diagnostic tool, wherein the control command includes the limit value of the accelerator pedal; and then uses The diagnostic tool sends the factory self-learning mode command and the control command to an engine management system; finally, the engine management system takes the minimum value of the limit value of the accelerator pedal that actually responds to the opening and closing of the accelerator pedal and the limit value of the accelerator pedal included in the control command to limit the opening and closing of the accelerator pedal. fit. The method and device for entering the transmission self-learning state. When the driver enters the actual self-learning, the clutch self-learning is completed by limiting the accelerator opening, so that the driver can accurately step on the accelerator opening and closing, and the smoothness of the shifting of the entire gearbox is improved.

Description

Method and device for entering gearbox self-learning state

technical field

The invention relates to the field of gearbox inspection, in particular to a method and device for entering a gearbox self-learning state.

Background technique

The gearbox mainly refers to the gearbox of the car, which is divided into two types: manual and automatic. The manual gearbox is mainly composed of gears and shafts, and the variable speed and torque are generated through different gear combinations; while the automatic gearbox AT is a hydraulic torque converter. It is composed of gear, planetary gear, hydraulic pitch change system and hydraulic control system. Variable speed and torque are achieved through hydraulic transmission and gear combination.

In the prior art, when a new off-line automatic transmission is assembled for the first time, the shifting of the transmission may be uneven and shocking when the vehicle is first driven. This is due to the limitation of the manufacturing process and the valve of the transmission oil circuit. Due to the difference of the body, it cannot be guaranteed that every gearbox can meet the design requirements. Due to the different manufacturing tolerances of each gearbox, the shifting smoothness of the entire gearbox may be poor.

Contents of the invention

In view of this, the purpose of the embodiments of the present invention is to provide a method and device for entering a gearbox self-learning state, so as to improve the above-mentioned problems.

In the first aspect, an embodiment of the present invention is a method for entering a gearbox self-learning state, and the method for entering a gearbox self-learning state includes:

sending a factory teach request to an automatic transmission controller using a diagnostic tool;

When the factory self-learning condition is met, the automatic transmission controller sends a control command to the diagnostic tool, wherein the control command includes a limit value for restricting the accelerator pedal;

the diagnostic tool sends factory self-learning mode commands and the control commands to an engine management system;

The engine management system defines the opening and closing degree of the accelerator pedal by taking the minimum value of the opening and closing degree of the accelerator pedal actually responded to and the limit value of the accelerator pedal included in the control command.

In the second aspect, the embodiment of the present invention also provides a gearbox self-learning state entry device, and the gearbox self-learning state entry device includes:

A diagnostic tool installed in an OBD system for sending Factory Teach requests to an automatic transmission controller;

The automatic transmission controller is electrically connected to the on-board diagnostic system, and the automatic transmission controller is used to send a control command to the diagnostic tool when the factory self-learning condition is met, wherein the control command includes a limit the limit value of the accelerator pedal;

An engine management system, electrically connected to the on-board diagnostic system, the diagnostic tool is used to send a factory self-learning mode command and the control command to the engine management system;

The engine management system is used to limit the opening and closing degree of the accelerator pedal by taking the minimum value of the opening and closing degree of the accelerator pedal actually responded to and the limit value of the accelerator pedal included in the control command.

Compared with the prior art, the method and device for entering the transmission self-learning state provided by the embodiments of the present invention use the automatic transmission controller to send a control command to the diagnostic tool when the factory self-learning condition is met, wherein the The control command includes the limit value of the accelerator pedal; then use the diagnostic tool to send the factory self-learning mode command and the control command to an engine management system; finally the engine management system takes the actual response to the opening and closing of the accelerator pedal and the control command contains The minimum value of the limit value limiting the accelerator pedal defines the degree of opening and closing of the accelerator pedal. The method and device for entering the transmission self-learning state. When the driver enters the actual self-learning, the clutch self-learning is completed by limiting the accelerator opening, so that the driver can accurately step on the accelerator opening and closing, and the smoothness of the shifting of the entire gearbox is improved.

In order to make the above-mentioned objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is the flowchart of the method for entering the gearbox self-learning state provided by the embodiment of the present invention;

Fig. 2 is a circuit connection block diagram of a transmission self-learning state entry device provided by an embodiment of the present invention.

Icons: 101-diagnostic tool; 102-on-board diagnostic system; 103-automatic transmission controller; 104-engine management system.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figure 1. The embodiment of the present invention provides a method for entering the gearbox self-learning state. The method for entering the gearbox self-learning state is suitable for operating the gearbox in two situations. Gearbox, the second type: after-sales service for individual gearboxes with poor shifting quality after clearing the self-learning and then re-learning or replacing the gearbox with a new one if the gearbox is faulty.

The method for entering the gearbox self-learning state includes:

Step S101 : Using a diagnostic tool 101 to send a factory self-learning request to an automatic transmission controller 103 .

The diagnostic tool 101 is plugged into the OBD system 102 and can exchange data with the OBD system 102 . The diagnostic tool 101 can send a request to the automatic transmission controller 103 through the OBD system 102 .

Step S102: The automatic transmission controller 103 judges whether the transmission oil temperature is within a preset temperature threshold range; if yes, it considers that the factory self-learning condition is met and executes step S103.

In this embodiment, the preset temperature threshold range may be, but not limited to, a temperature threshold range greater than 40 degrees Celsius. The specific transmission oil temperature can be collected by a temperature sensor located in the transmission and transmitted to the automatic transmission controller 103 .

Step S103: when the factory self-learning condition is satisfied, the automatic transmission controller 103 sends a control command to the diagnostic tool 101 .

Wherein, the control command includes a limit value for restricting the accelerator pedal. In this embodiment, the limit value for restricting the accelerator pedal is preferably 18% of the opening and closing degree of the accelerator pedal. If it is satisfied, the automatic transmission controller 103 provides positive feedback to the diagnostic tool 101 , if not, it provides negative feedback, that is, it fails to enter the factory self-learning mode.

Step S104 : the diagnostic tool 101 sends the factory self-learning mode command and the control command to an engine management system 104 .

Step S105: The engine management system 104 limits the opening and closing degree of the accelerator pedal by taking the minimum value of the opening and closing degree of the accelerator pedal actually responded to and the limit value of the accelerator pedal included in the control command.

The automatic transmission controller 103 outputs prompt information for the second gear position when the gear control lever is in the first gear position in response. For example, when the gear control lever is in the D gear, the automatic transmission controller 103 outputs the prompt information of the M gear to the driving instrument display, so as to remind the user that the factory self-learning has not been completed.

Step S106: The automatic transmission controller 103 judges whether the diagnostic tool 101 is powered off, if not, execute step S107, and if yes, execute step S111.

Step S107: The automatic transmission controller 103 responds to a set of operation instructions input by the driver.

The set of operating instructions refers to the instructions that need to be input for all operating procedures of the transmission factory self-learning. For example, the set of operating instructions may include an instruction to switch a preset number of N-D gears in situ, and the interval between each switch is a preset time, wherein the preset number of N-D gear switches may be but not It is limited to 6 times, and the preset time can be but not limited to 5S, and then the operator steps on the accelerator, raises the gear control lever from 1st gear to 4th gear for the preset number of times, and raises the gear control lever from 1 to 4. The preset number of times the gear is raised to the 4th gear can be adopted but not limited to 5 times.

Step S108: Determine whether the factory self-learning is completed according to the operation instruction set, and if so, execute step S109.

Step S109: Switch the output prompt information of the second gear position to prompt information of the first gear position.

When the self-learning is completed, when the gear position control lever is in the D gear, the automatic transmission controller 103 outputs the prompt information of the D gear to the driving instrument display, so as to prompt the user to complete the factory self-learning.

Step S110: Notifying the engine management system 104 to exit the accelerator pedal restriction.

Understandably, in order to avoid the remnants of the self-learning mode from entering the market and causing complaints to customers due to abnormal drivability, the driver can unplug the diagnostic tool 101 at any time during the self-learning process and power off, and the automatic transmission controller 103 immediately cancels it. In the self-learning mode, the engine management system 104 cancels the restriction on the throttle opening, assuming that the instrument returns to normal after the power is turned on again, which fully guarantees the safety and reliability of the method for entering the gearbox self-learning state.

Please refer to Fig. 2, the embodiment of the present invention provides a gearbox self-learning state entry device, it should be noted that, the gearbox self-learning state entry device provided by the embodiment of the present invention, its basic principle and the technical effect and The foregoing embodiments are the same, and for brief description, for parts not mentioned in the embodiments of the present invention, reference may be made to the corresponding content in the foregoing embodiments. The transmission self-learning state entry device includes:

The diagnostic tool 101 installed in an OBD system 102 is used to send a factory self-learning request to an automatic transmission controller 103 .

The automatic transmission controller 103 is used to judge whether the transmission oil temperature is within a preset temperature threshold range; if yes, it is considered that the factory self-learning condition is satisfied.

The automatic transmission controller 103 is electrically connected to the on-board diagnostic system 102, and the automatic transmission controller 103 is used to send a control command to the diagnostic tool 101 when the factory self-learning condition is met, wherein the The control command contains a limit value that limits the accelerator pedal.

The engine management system 104 is electrically connected to the on-board diagnostic system 102 , and the diagnostic tool 101 is used to send the factory self-learning mode command and the control command to the engine management system 104 .

The engine management system is used to limit the opening and closing degree of the accelerator pedal by taking the minimum value of the opening and closing degree of the accelerator pedal actually responded to and the limit value of the accelerator pedal included in the control command.

The automatic transmission controller 103 outputs prompt information for the second gear position when the gear control lever is in the first gear position in response.

The automatic transmission controller 103 is also used to respond to the set of operation instructions input by the driver; judge whether the factory self-learning is completed according to the operation instruction set; if the factory self-learning is completed, switch the output second gear prompt information Prompt information for the first gear.

Wherein, the set of operation instructions includes an instruction to switch a preset number of N-D gears in situ, and the interval time between each switch is a preset time, and then the gear position control lever is raised from the 1st gear to the 4th gear preset command for a specified number of times.

In addition, the automatic transmission controller 103 is further configured to notify the engine management system 104 to exit the accelerator pedal restriction when the diagnostic tool 101 is powered off.

The method and device for entering the transmission self-learning state provided by the embodiments of the present invention use the automatic transmission controller to send a control command to the diagnostic tool when the factory self-learning condition is met, wherein the control command includes limiting the accelerator pedal Then use the diagnostic tool to send the factory self-learning mode command and the control command to an engine management system; finally the engine management system takes the actual response to the opening and closing of the accelerator pedal and the limit value of the accelerator pedal contained in the control command The minimum value limits the opening and closing of the accelerator pedal. The method and device for entering the transmission self-learning state. When the driver enters the actual self-learning, the clutch self-learning is completed by limiting the accelerator opening, so that the driver can accurately step on the accelerator opening and closing, and the smoothness of the shifting of the entire gearbox is improved.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are only illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functions and possible implementations of devices, methods and computer program products according to multiple embodiments of the present invention. operate. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or action , or may be implemented by a combination of dedicated hardware and computer instructions.

In addition, each functional module in each embodiment of the present invention can be integrated together to form an independent part, or each module can exist independently, or two or more modules can be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in various embodiments of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and other media that can store program codes. . It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention. It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Claims (8)

1. a kind of gearbox adaptive learning access method, which is characterized in that the gearbox adaptive learning access method packet It includes:

Factory's self study is sent using a diagnostic tool to request to an automatic gear-box controller；

Whether the automatic gear-box controller judges TOT Transmission Oil Temperature within the scope of presetting temperature threshold；If it is, Think to meet factory's self study condition；

When meeting factory's self study condition, the automatic gear-box controller sends control command to the diagnosis work Tool, wherein the control command includes the limit value of restricted gas pedal；

The diagnostic tool sends the order of factory's self-studying mode and the control command to an engine management system；

The limitation throttle that the opening degree and control command that the engine management system takes real response to gas pedal include is stepped on The minimum value of the limit value of plate limits gas pedal opening degree.

2. gearbox adaptive learning access method according to claim 1, which is characterized in that the automatic gear-box control Device processed exports the second gear prompt information, in the engine management system when being responsive to gear control-rod and being in the first gear The minimum value of the limit value for the limitation gas pedal that the opening degree and control command that system takes real response to gas pedal include limits After the step of gas pedal opening degree, the gearbox adaptive learning access method further include:

The automatic gear-box controller is responsive to the operational order set of driver's input；

Judge whether factory's self study is completed according to the operational order set；

If the second gear prompt information of output is switched to the first gear prompt information when factory's self study is completed.

3. gearbox adaptive learning access method according to claim 2, which is characterized in that the operational order set Switch the instruction of presetting number including original place N-D gear, and the interval time switched every time is the presetting time, then will Gear control-rod blocks the instruction for rising to the presetting number of 4 gears from 1.

4. gearbox adaptive learning access method according to claim 1, which is characterized in that in the engine management The minimum value of the limit value for the limitation gas pedal that the opening degree and control command that system takes real response to gas pedal include limits After the step of determining gas pedal opening degree, the gearbox adaptive learning access method further include:

The automatic gear-box controller notifies the engine management system to exit when electric under being responsive to the diagnostic tool Gas pedal limitation.

5. a kind of gearbox adaptive learning enters device, which is characterized in that the gearbox adaptive learning enters device packet It includes:

It is installed on the diagnostic tool of an onboard diagnostic system, requests to an automatic gear-box to control for sending factory's self study Device；

Whether the automatic gear-box controller is for judging TOT Transmission Oil Temperature within the scope of presetting temperature threshold；If It is, then it is assumed that meet factory's self study condition；

The automatic gear-box controller is electrically connected with the onboard diagnostic system, and the automatic gear-box controller is used for full When foot factory's self study condition, control command is sent to the diagnostic tool, wherein the control command includes restricted The limit value of gas pedal；

Engine management system is electrically connected with the onboard diagnostic system, and the diagnostic tool is for sending factory's self study mould Formula order and the control command are to the engine management system；

The limitation oil that the opening degree and control command that the engine management system is used to take real response to gas pedal include The minimum value of the limit value of door pedal limits gas pedal opening degree.

6. gearbox adaptive learning according to claim 5 enters device, which is characterized in that the automatic gear-box control Device processed exports the second gear prompt information when being responsive to gear control-rod and being in the first gear,

The automatic gear-box controller is also used to be responsive to the operational order set of driver's input；According to the operational order Set judges whether factory's self study is completed；If the second gear prompt information of output is switched to the when factory's self study is completed One gear prompt information.

7. gearbox adaptive learning according to claim 6 enters device, which is characterized in that the operational order set Switch the instruction of presetting number including original place N-D gear, and the interval time switched every time is the presetting time, then will Gear control-rod blocks the instruction for rising to the presetting number of 4 gears from 1.

8. gearbox adaptive learning according to claim 5 enters device, which is characterized in that the automatic gear-box control Device processed is also used to when electric under being responsive to the diagnostic tool, and the engine management system is notified to exit gas pedal limitation.