JPH05133309A - Starter for engine - Google Patents

Abstract

PURPOSE:To prevent an overload to a starter and the over-discharge of a bat tery by monitoring the operating state of the starter, repeating a starting opera tion under prescribed conditions and further providing a start--unable state when an engine does not start. CONSTITUTION:When a transmission command is supplied to a main controller 42, a starter dynamo is connected to a battery 17. When an engine 6 is started, the operating time of the starter dynamo 15 is integrated. At this time, when the rotating speed of the engine 6 is less than a prescribed rotating speed, the same operation is repeated. On the other hand, when the operating time of the starter dynamo 15 becomes more than a prescribed time, the operation is stopped. Then, the stop time is integrated. When the stop time exceeds a preset time, it is considered as a start failure. Start failure times are added. When the start failure times exceeds prescribed times, while the engine 6 does not reach the prescribed rotating speed, the engine 6 is regarded as a 'start unable state' and any irrational start is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine starting device equipped with a starter motor in a vehicle or the like.

[0002]

2. Description of the Related Art Many vehicles such as automobiles are provided with a starter motor that is driven by a battery as a power source, and an operator starts the engine by operating the starter motor for a certain period of time.

[0003]

By the way, at the time of starting, the operator tries to make the operating time of the starter motor as short as possible in order to avoid useless discharge of the battery, and therefore the operating time of the starter motor is insufficient. As a result, the engine often does not reach a predetermined rotation speed, that is, it does not often start. At this time, if the starter motor is restarted immediately after it is stopped and the above operation is repeated many times, the starter motor is overloaded and the battery is over-discharged.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and prevents an excessive load from being applied to the starter motor when the engine is started by the starter motor using a battery as a power source. , The purpose is to prevent the battery from being over-discharged and to enable proper startup.

[0005]

A feature of the present invention for achieving the above object is that the starter motor is operated when the engine speed is equal to or lower than a predetermined speed regardless of whether the starter motor is operated for a predetermined time or longer. Is repeated until a predetermined time is exceeded, and this first process is repeated, and when the number of repetitions reaches a predetermined number or more without repeating the engine above the predetermined number of revolutions by this repetition, The point is that a control device is provided for executing a second process for making the engine inoperable.

[0006]

[Operation] The operation of the above configuration is as follows. The main controller (control device) 42 executes the following first processing and second processing. That is, first, when the engine 6 is at a predetermined rotation speed or lower even though the starter dynamo (starter motor) 15 has been operated for a predetermined time or more, the starter dynamo (starter motor) 15 is stopped until it exceeds a predetermined time. 1 Process is executed. Therefore, when the engine 6 is not started by the operation of the starter dynamo (starter motor) 15, the engine 6 is restarted immediately after the operation of the starter dynamo (starter motor) 15 is stopped. The starter dynamo (starter motor) 15 is prevented from being overloaded, and the battery 17 is prevented from being over-discharged.

Moreover, while repeating the first process,
Even if the engine 6 does not reach the predetermined number of revolutions or more by this repetition and the number of repetitions reaches the predetermined number of times or more, the second process for making the engine 6 in the unstartable state is executed. Therefore, when the engine 6 is in a state where it cannot be started as described above, some work such as inspection and repair for removing the cause is forced, and an unreasonable start is prevented. ..

[0008]

Embodiments of the present invention will be described below with reference to the drawings. In FIGS. 2 and 3, reference numeral 1 denotes a golf car which is a vehicle, and a pair of left and right front wheels 3, 3 are rotatably supported on a front portion of a body 2 of the golf car 1. On the other hand, a pair of left and right rear wheels 4 and 4, which are drive wheels, are supported at the rear of the vehicle body 2. Same as above, a gasoline engine 6 which is a driving source of the vehicle is mounted in the substantially central portion of the vehicle body 2. A carburetor 7 and an intake pipe 8 are connected to the intake port of the engine 6, while an exhaust pipe 9 and a muffler 10 are provided at the exhaust port.
And the muffler 10 are arranged on the right side of the vehicle body 2.

A gear type speed reducer 12 is supported on the vehicle body 2 behind the engine 6. The input shaft of the speed reducer 12 is connected to the engine 6 by a V-belt winding type automatic transmission 13, and the output shaft of the speed reducer 12 is connected to the rear wheels 4 and 4. When the engine 6 is driven, the rear wheels 4 and 4 are driven via the automatic transmission 13 and the speed reducer 12, and the vehicle can run.

A starter dynamo 15 is provided in front of the engine 6, and the starter dynamo 15 is connected to the engine 6 by a V-belt winding device 16. The starter dynamo 15 serves both as a starter motor for starting the engine 6 and a generator. When the starter dynamo 15 functions as a starter motor, the battery 17 disposed on the right side of the speed reducer 12 is connected to the starter dynamo 15. When it is driven as a power source and functions as a generator, its output is charged in the battery 17 as above.

In FIGS. 2 to 4, a handle post 19 is provided so as to project from the right and left central portions of the vehicle body 2 toward the rear upper side. The steering shaft 20 is attached to the handle post 19.
And a bar type handle 21 is attached to the upper end of the steering shaft 20. The front wheels 3, 3 are steerably connected to the lower end of the steering shaft 20 via a gear device 22, and a steering motor 23 is connected to the gear device 22. The steering motor 23 also has the gear device 22. The front wheels 3 and 3 are connected to each other via a steering wheel. The front wheels 3 and 3 are steered via the gear unit 22 by operating the steering wheel 21 or driving the steering motor 23. Also,
A parking lever 24 is pivotally supported on the upper end of the steering shaft 20.

2 to 4, the speed reducer 1 is
A disk brake 25 is attached to the right end of the second intermediate shaft, and an electromagnetic brake 26 is attached to the left end of the other intermediate shaft. The disc brake 25 is braked or released by the parking lever 24. On the other hand, a brake lever 27 is provided corresponding to the left grip of the handle 21, and the disc brake 25 can be operated by operating the brake lever 27.
Is braked or released. By this braking operation, the rear wheels 4, 4 are braked via the speed reducer 12. The electromagnetic brake 26 is normally braked by a spring force, which also brakes the rear wheels 4 and 4 via the speed reducer 12. When the electromagnetic brake 26 is electrically turned on (ON), braking of the electromagnetic brake 26 is released by the electromagnetic force that opposes the spring force.

2 to 4, the vaporizer 7 shown in FIG.
A switching device 29 is connected to the throttle valve via a first wire 28, a governor device 31 is connected to the switching device 29 via a second wire 30, and the governor device 31 is connected to a first device. An accelerator lever 33 provided corresponding to the right grip of the handle 21 is connected via a 3 wire 32. Further, the same as above, the first wire 28 and the switching device 29 are attached to the throttle valve of the carburetor 7.
The electromagnetic clutch 35 and the step motor 36 are connected via the.

When the accelerator lever 33 is connected to the throttle valve of the carburetor 7 by the switching operation of the switching device 29, the operation of the accelerator lever 33 is performed via the governor device 31 and the switching device 29. Vaporizer 7
Is transmitted to the throttle valve of the
The opening / closing operation of the throttle valve according to the operation amount of 3 is obtained. Further, the stepping motor 36 is moved by the switching operation of the switching device 29 of the above.
If it is connected to the throttle valve of the above, the operation of the step motor 36 is transmitted to the throttle valve of the carburetor 7 via the connected electromagnetic clutch 35 and the switching device 29, and the operation of the step motor 36 is performed. The opening / closing operation of the corresponding throttle valve can be obtained.

A step plate 3 is provided at the rear of the vehicle body 2.
8 are laid. If the operator gets on while standing on the step plate 38, the handle 21
The steering lever can be operated and the brake lever 27 and the accelerator lever 33 can be operated. A basket 40 for mounting the golf bag 39 is provided on the front portion of the vehicle body 2, and the operator can carry the golf bag 39 to a desired position by the steering or the like.

2 to 4, vehicle components for electrically and electronically controlling the golf car 1 will be described. A main controller 42 is provided on the left side of the vehicle body 2. On the other hand, an ignition circuit 44 is electrically connected to the engine 6 (hereinafter, simply referred to as connection).
The ignition circuit 44 is connected to the main controller 42.
It is connected to the. Further, a rotation sensor 45 for detecting the rotation speed of the engine 6 is provided.
The same is also connected to the main controller 42, and the ignition timing in the ignition circuit 44 is determined by the output signal of the rotation sensor 45.

A main switch 46, which is a key switch capable of supplying the electric power of the battery 17 to the main controller 42, is provided. In addition, a start / stop switch 47 that enables the golf car 1 to start or stop is connected to the main controller 42. Further, a mode changeover switch 48 is connected to the main controller 42 of the same as above.
Reference numeral 8 denotes a manual mode in which an operator can directly operate each component of the golf car 1 in a riding state, and an automatic mode in which each component of the golf car 1 can be operated by a remote controller (remote operation). Either of the fixed point passing modes can be selected. The fixed point passing mode will be briefly described. On the traveling road surface of the golf car 1, a fixed point magnet is embedded at a position where the golf car 1 is to be stopped on a predetermined traveling course. When the golf car 1 automatically travels and reaches the magnet, the golf car 1 is automatically stopped by detecting the magnetic force. By the way, when the fixed point passing mode is selected, even if the magnet is reached, it is ignored and the vehicle travels to the next fixed point magnet.

In the above case, the transmitter 50 is provided separately from the golf car 1, and this transmitter 50 is also provided with the same transmission stop switch 51 as the start stop switch 47. On the other hand, a remote controller 52 connected to the main controller 42 is provided. When the transmission stop switch 51 of the transmitter 50 is operated, the signal is received by the remote controller 52,
Each component of the golf car 1 is operated.

A vehicle speed sensor 53 is attached to the speed reducer 12, and an accelerator switch 54 is attached to the accelerator lever 33. The vehicle speed sensor 53 and the accelerator switch 54 are both main controllers 4.
Connected to 2.

When the manual mode is selected by the mode selector switch 48, the switching device 29 connects the accelerator lever 33 to the throttle valve of the carburetor 7 via the switching device 29 and the governor device 31. On the other hand, when the automatic mode is selected by the mode switching switch 48, the switching device 29 connects the step motor 36 to the throttle valve of the carburetor 7 via the switching device 29 and the electromagnetic clutch 35.

The throttle valve of the carburetor 7 is provided with a throttle sensor 55 for detecting the opening of the carburetor 7. The throttle sensor 55 is connected to the main controller 42 together with the step motor 36. In the automatic mode, the detection signal of the vehicle speed sensor 53 causes the throttle valve of the carburetor 7 to be opened larger by the operation of the step motor 36 when the vehicle speed is slow, and the throttle valve is closed smaller when the vehicle speed is fast. It is designed to let you. In addition, the same as above step motor 36
When the above throttle valve opens and closes due to the operation of
The throttle sensor 55 detects this opening and feeds it back to the step motor 36 via the main controller 42, whereby an appropriate opening is obtained.

A resistor 57 is connected in parallel to the series circuit of the battery 17 and the main relay 56, one end of this parallel circuit is connected to the main controller 42 via a starter dynamo controller 58, and the other end is a switching relay 59.
It is connected to the starter dynamo 15 via a series circuit including a power source sensor 60 and a power source sensor 60. Further, the main relay 56, the switching relay 59, and the power source sensor 60 are
Both are connected to the main controller 42 via the starter dynamo controller 58. In the above case, the resistor 57 is thermally isolated from the muffler 10 by the heat insulating material 57a.

A guide wire 61 is buried along the desired traveling course on the traveling road surface of the golf car 1, and an S pole or an N pole is provided at a predetermined position along the longitudinal direction of the guide wire 61. A magnet 61a is installed. On the other hand, a rotating arm 62 that rotates in the same direction as the steering direction of the front wheels 3, 3 is provided in association with the gear device 22. Three guide wire sensors 63 are attached to the rotating end of the rotating arm 62, and these guide wire sensors 63 are connected to the main controller 42 via an amplifier 64. The steering motor 23 is also connected to the main controller 42 via the steering controller 65. On the other hand, a fixed point sensor 66 is attached to the lower side of the vehicle body 2, and the fixed point sensor 6
6 is connected to the same main controller 42 as above via an amplifier 67.

The following sensors and switches are all connected to the main controller 42. An obstacle sensor 70 of the ultrasonic transmitter is attached to the front end of the vehicle body 2.
71 is an amplifier. Reference numeral 72 denotes a rear-end collision prevention sensor, which is the same as the receiver 73 attached to the front part of the vehicle body 2.
And a transmitter 74 attached to the rear of the vehicle. The receiver 73 receives a signal from another golf car 1 in front of the golf car 1 to prevent the vehicle from colliding with the golf car 1, and the transmitter 74 causes the golf car 1 to receive another golf car 1 Send a signal to prevent a rear-end collision.

Reference numeral 77 is a bumper switch, which detects that the golf car 1 has collided with something. Reference numeral 78 denotes a boarding switch, which is provided on the lower surface side of the step plate 38 and detects that a person has stepped on the step plate 38. A parking switch 79 detects that the disc brake 25 is braked by operating the parking lever 24. A back switch 80 detects that the golf car 1 has backed. Furthermore, 81
Is a maintenance switch, and 82 is an alarm device.

Next, the control by the main controller 42 when the golf car 1 is automatically driven unmanned will be described. After the main switch 46 is turned on, the automatic mode is selected by the mode changeover switch 48, and a transmission command is given to the main controller 42 by operating the start stop switch 47 or the transmission stop switch 51 of the transmitter 50. And the electromagnetic clutch 35 is connected to the throttle valve of the carburetor 7 by the switching device 29, and the opening degree thereof is automatically adjusted by the step motor 36. In this case, with respect to the throttle valve of the carburetor 7, the governor device 3 is controlled by the switching device 29.
The connection of 1 and the accelerator lever 33 is released. At the same time as the above, the electromagnetic brake 26 is turned on and the braking is released.

Then, by operating the switching relay 59, the starter dynamo 15 is connected to the battery 17, and this starter dynamo 15 functions as a starter motor to start the engine 6.

In the above case, the main controller 42 is
A control device for starting the engine 6 by the starter dynamo 15 is provided, and this device executes a first process and a second process described below. This device will be described with reference to FIG. This figure shows a flow chart of the control device,
In the figure, (P-1) to (P-16) indicate each step of the program.

When the starter dynamo 15 is connected to the battery 17 by giving a transmission command to the main controller 42 as described above, that is, when the engine 6 is started up (P-1), (P-2). ), The start flag is set to “start”. For this reason, the starter dynamo 15 is started and its operating time is integrated (P-
3). If the operating time does not reach the preset predetermined time (P-4) and the rotation speed of the engine 6 exceeds the preset predetermined rotation speed (P-5), the start flag is set to ""Success" (P-6). Then, the starter dynamo 15 is stopped (P-7), and then the process returns to (P-1), and the start control of the engine 6 ends.

In the above (P-5), when the rotation speed of the engine 6 is less than or equal to the predetermined rotation speed, the above (P-1) to (P-1)
-4) is repeated, but in (P-4), when the operating time of the starter dynamo 15 exceeds a predetermined time, the start flag is set to "starter stop" (P-
8), the operation of the starter dynamo 15 is stopped, so that it is stopped (P-9).

After that, the procedure returns to (P-1), the rest time of the starter dynamo 15 is integrated (P-10), and when this rest time is less than a preset predetermined time, (P-1)
1), the above (P-1), (P-10), and (P-1
1) is repeated. On the other hand, when the pause time exceeds the predetermined time in (P-11), the activation flag is set to "before activation" (P-12), and this is regarded as activation failure, and the number of activations is added (P-12). -13). That is, the above (P
-1) to (P-5) and (P-8) to (P-13) are executed as the first process.

After the above (P-13), the process returns to (P-1). Here, when the number of times of failure of activation is less than the preset number of times (P-14), the activation flag is set to "activation" again (P-15), and the process returns to (P-1). Then, the first process is repeated. And the first
If the rotation speed of the engine 6 exceeds the predetermined rotation speed in the course of repeating the processing (P-5), the start-up ends as described above (P-6) (P-7) (P-2).

On the other hand, by repeating the above, the engine 6
If the number of repetitions (the number of times of starting failure) exceeds the predetermined number of times without exceeding the predetermined number of revolutions (P-14), the start flag is determined to be "failure" (P-1).
6), return to (P-1), and remain as it is.
That is, the engine 6 is set to the “state in which it cannot be started”. That is, (P-14) and (P-1) after the first processing
6) is executed as the second process.

When the engine 6 is in the "unstartable state" as described above, some work such as inspection and repair for removing the cause is forced, and it is impossible to start the engine. Is prevented. Further, there is provided a returning means for returning the above-mentioned “state where activation is impossible” to “state where activation is possible”. The returning means is composed of the main controller 42 and the main switch 46. That is, if the main switch 46 is once turned off and then turned on, the main controller 42 is activated by the input of the signal when the main switch 46 is turned on. It is possible to return to the "possible state". Then, by returning in this manner, the above-described first and second processings can be executed.

2 to 4, when the engine 6 starts up and reaches a predetermined rotation speed, the power thereof is transmitted to the speed reducer 12 while being automatically shifted by the automatic transmission 13. Then, after being decelerated by the speed reducer 12, it is transmitted to the rear wheels 4 and 4, whereby the golf car 1 starts running.

When the traveling is started, the guide wire sensors 63 detect the guide wires 61, whereby the steering motor 23 is operated via the main controller 42 and the steering controller 65. Then, the front wheels 3 and 3 are steered via the gear device 22, whereby the golf car 1 is automatically driven along the guide line 61.

During the automatic traveling, the throttle valve of the carburetor 7 is adjusted in accordance with the detection signal of the vehicle speed sensor 53, and normally a certain high speed traveling is performed. But,
During this traveling, when the golf car 1 deviates from the guide wire 61 by a certain size or more, it is decelerated and switched to a certain low speed traveling.

The magnet 61a is installed in front of a steep downhill or a sharp corner, and the low speed traveling is performed even when the fixed point sensor 66 detects the magnet 61a. In this low-speed traveling, the low-speed traveling distance is calculated by the detection signal of the vehicle speed sensor 53 and the timer built in the main controller 42, and after the predetermined low-speed traveling, the vehicle automatically returns to the high-speed traveling. It is like this.

While the vehicle is running, the starter dynamo 15 driven by the engine 6 functions as a generator, and its output is charged in the battery 17 via the switching relay 59 and the main relay 56.

When going downhill, the starter dynamo 15 generates electric power to cause regenerative braking, and the golf car 1 is decelerated. At this time, the magnitude of the regenerative braking is controlled by the starter dynamo controller 58. When the battery 17 is sufficiently charged, the regenerative braking becomes insufficient, so
At this time, the switching relay 59 causes the starter dynamo 15 to
To connect to the resistor 57. Then,
The regenerative current is consumed by the resistor 57, so that a desired regenerative braking can be obtained.

When the running of the golf car 1 is stopped, a stop command is given to the main controller 42 by the start stop switch 47 or the transmission stop switch 51 of the transmitter 50.

In this case, first, the vaporizer 7 is closed.
Then, the golf car 1 is decelerated by the engine brake of the engine 6 and the regenerative braking by the power generation of the starter dynamo 15. After that, when it is determined by the detection signal of the rotation sensor 45 or the vehicle speed sensor 53 that the rotation speed or the vehicle speed of the engine 6 has become lower than a predetermined value, the engine 6 causes the ignition circuit 44 to misfire.
At this time, the electromagnetic clutch 35 is turned off (disengaged), the throttle valve in the carburetor 7 is fully closed by the spring return, and the engine 6 is stopped by these.

At this time, no instruction (pulse input) is given to the step motor 36 from the main controller 42, and the rotational position of the step motor 36 is held as it is. However, the instruction (the number of pulse inputs) to the step motor 36 by the CPU built in the main controller 42 is reset to "0". Simultaneously with the stop of the engine 6, the electromagnetic brake 26 is turned off to brake the rear wheels 4 and 4, whereby the golf car 1 is stopped.

Since the above-described stop of the golf car 1 is performed after the vehicle speed is reduced to a predetermined vehicle speed by the engine brake or the like, a smooth stop can be obtained. In addition, when the golf car 1 does not stop within a predetermined distance set in advance after the stop command, that is, for example, on a long downhill, a long distance is required for the engine speed and the vehicle speed to decrease to a predetermined value. In such a case, the vehicle speed sensor 53 or the like detects that the predetermined distance is exceeded, and the electromagnetic brake 26 is turned off (braking).

[0045]

According to the present invention, the control device suspends the starter motor until it exceeds a predetermined time when the engine is at a predetermined rotation speed or lower despite the starter motor being operated for a predetermined time or longer. Since 1 process is performed, when the starter motor is not started up by the operation of the starter motor, the starter motor is restarted immediately after the operation of the starter motor is stopped. The burden is prevented, and
It also prevents the battery from becoming over-discharged. Therefore, the engine can be properly started.

Moreover, the control device repeats the first process, and when the number of repetitions exceeds the predetermined number of times without repeating the engine rotation above the predetermined number of rotations, the engine is started. Since the second process for making the state impossible is executed, when the engine is in a state where it cannot be started as described above, some work such as inspection and repair for removing the cause is forced. Therefore, it is possible to prevent unreasonable activation. Therefore, also in this respect, the engine can be properly started.

[Brief description of drawings]

FIG. 1 is a flowchart of a control device.

FIG. 2 is a side view of the golf car.

FIG. 3 is a plan view of the golf car.

FIG. 4 is an overall diagram including a wiring diagram.

[Explanation of symbols]

 1 Golf Car (Vehicle) 6 Engine 15 Starter Dynamo (Starter Motor) 17 Battery 42 Main Controller (Control Device)

Claims (1)

[Claims] 1. A starter device for an engine, comprising a starter motor that is operated by using a battery as a power source and starting the engine by the operation of the starter motor, regardless of whether the starter motor is operated for a predetermined time or longer. When the engine speed is lower than or equal to the predetermined speed, the first processing for stopping the starter motor until it exceeds a predetermined time and the first processing are repeated. An engine starter provided with a control device that executes a second process for making the engine inoperable when the number of repetitions exceeds a predetermined number.