JP2002286054A - Departure controller for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a departure controller for a vehicle provided with a function for automatically starting a vehicle capable of changing over to manual departure only by treading a clutch pedal. SOLUTION: The departure controller is provided with a clutch pedal constituted so as to enable the manual departure, a sensor detecting tread of the clutch pedal, an automatic departure controlling means automatically starting a vehicle, and an automatic departure stop means stopping the control by the automatic departure controlling means and changing over to the manual departure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle start control device having a function of automatically starting a vehicle.

[0002]

2. Description of the Related Art Conventionally, in vehicles such as large trucks,
Fully automatic transmissions without a clutch pedal have been developed. In such a vehicle, automatic start is possible without depressing the clutch pedal.

[0003]

However, in the case of vehicles such as large trucks, the starting conditions vary greatly.
There has been a problem that it is difficult to sufficiently satisfy the driver's start performance requirements only by automatic start. That is, in a large truck, the load weight may fluctuate greatly, and it is very difficult to perform automatic start accurately for all the load weights.

[0004] In addition, the starting conditions greatly change depending on whether the starting place is a slope, a step, or a muddy land. The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a start control device for a vehicle that can be switched to manual start only by depressing a clutch pedal.

[0005]

According to a first aspect of the present invention, there is provided a vehicle start control device which includes a clutch pedal configured to be capable of manual start, a sensor for detecting depression of the clutch pedal, and an automatic start control for automatically starting the vehicle. Means, and automatic start stop means for stopping control by the automatic start control means and switching to manual start when the depression of the clutch pedal is detected by the sensor.

According to a second aspect of the present invention, there is provided a vehicle start control apparatus according to the first aspect, further comprising an alarm unit for generating an alarm when the automatic start stop unit operates.

(Operation) In the vehicle start control device according to the first aspect, when the clutch pedal is depressed, the depression is detected by the sensor.

Then, the control by the automatic start control means is stopped by this detection, and the start is switched to the manual start. In the vehicle start control device according to the second aspect, when the automatic start stop means is activated, an alarm is issued by the alarm means, and the driver is switched to the manual start and transmitted to the driver.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an engine and a transmission equipped with an embodiment of a vehicle start control device according to the present invention. In FIG. 1, a transmission 26 is connected to an engine 31 via a clutch housing 32.
Is attached.

The clutch housing 32 is provided with a position sensor 33 for detecting a gear shift position. The transmission 26 includes a transmission actuator sensor 34 for detecting a gear shift based on an electric signal from the transmission control unit 25A, a vehicle speed sensor 35, and an actuator 3
6. An actuator 37 and a gear rotation sensor 38 are attached.

The clutch pedal 43 is provided with a clutch pedal switch 42 which is turned on when the clutch pedal 43 is depressed, and a clutch pedal switch 41 which is turned off when the clutch pedal 43 is depressed. Further, the engine rotation sensor 25 and the clutch stroke sensor 26a
Are attached to the clutch housing 32, and together with the shift tower 30, the position sensor 33, the transmission actuator sensor 34, the gear rotation sensor 38, the clutch pedal switches 41 and 42, the display monitor 40, the magnetic valve 39, etc., are provided to the transmission control unit 25A. They are connected by electric circuits.

The throttle actuator 28 and the accelerator sensor 27 are connected to an engine control unit 29 by an electric circuit. FIG. 2 shows a clutch actuator for controlling the clutch shown in FIG. 1. A link 11 of a hydraulic cylinder 10 having a clutch booster 10a is connected to an outer lever 1 of the clutch.
2 are connected.

A clutch stroke sensor 26 is connected to the outer lever 12 via a link 13. The master cylinder 14 is connected to the clutch booster 10a by a hydraulic circuit 15. The air reservoir 16 is controlled by an air circuit through a clutch disengagement magnetic valve 20 and a clutch deceleration magnetic valve 19 serving as air supply valves.
It is connected to the double check valve 17.

Further, the exhaust side of the clutch deceleration magnetic valve 19 is connected via a throttle 18 to a clutch connecting magnetic valve 21 which is an exhaust valve. The clutch connecting magnetic valve 21 is connected to the double check valve 17 together with the magnetic valve 19. The center of the double check valve 17 is connected to the clutch booster 10a, and the other connection ports are connected to the control unit of the clutch booster 10a.

FIG. 3 is a block diagram showing a vehicle start control device according to this embodiment. The control device includes an automatic start control means 51, a clutch pedal depression detection means 53,
It has an automatic start stop means 55 and an alarm means 57. The automatic start control means 51 performs all controls necessary for automatically starting the vehicle. The clutch pedal depression detecting means 53 detects depression of the clutch pedal 43 which is configured to be able to start manually.

In this embodiment, a signal from the clutch pedal switch 42 is input to the clutch pedal depression detecting means 53. The automatic start stopping means 55 is provided with the clutch pedal 4 by the clutch pedal depression detecting means 53.
The automatic start control unit 51 detects the depression of the third step.
Is stopped.

Then, the start control is switched to manual start. In this embodiment, the clutch actuator 5
The clutch can be operated manually (pedal) by opening the clutch connection magnetic valve 21 (discharging the air of the clutch booster) arranged at 9.

The alarm means 57 generates an alarm when the automatic starting stop means 55 operates. In this embodiment, an alarm is sounded as an alarm. FIG. 4 is a flowchart showing the operation of the vehicle start control device of this embodiment. First, in step S1, it is determined whether the vehicle is waiting to start or is automatically starting.

If the vehicle is waiting to start or is automatically starting, it is determined in step S2 whether the clutch pedal switch 42 is ON. And N
In the case of O, that is, when the clutch pedal 43 is not depressed, automatic start control is performed in step S3. In this automatic start control, as shown in FIG.
9 and 20 are turned on, the air on the B (control) side is sent to the double check valve 17, and the clutch booster 10a is operated by the air on the control side to disconnect the clutch.

When the clutch is disconnected, the clutch magnetic valve 20 is turned off and the air supply is stopped. At this time, the clutch pedal 43 side is in the non-communication state, and the clutch is not operated by the pedal. Next, when the gear setting is completed, the air from the clutch booster 10a is exhausted by the clutch magnetic valves 19 and 21, and the clutch is connected.

On the other hand, if YES in step S2, that is, if the clutch pedal is depressed, a warning sound is generated by the warning means 57 in step S4. Then, in step S5, the automatic start control is interrupted.

In the state where the automatic start control is interrupted, as shown in FIG. 6, the air on the B (control) side of the clutch actuator is exhausted by the clutch magnetic valve 21, and the double check valve 17 is released from the A (manual) side. And the air enters from the manual side, so that the clutch can be operated manually (pedal).

After switching to the manual side,
Before the completion of the gear setting, the clutch pedal switch 42 is
If the pedal is returned before FF, that is, before the gear setting is completed, the automatic start control is switched again. In the vehicle start control device described above, when the clutch pedal 43 is depressed, the depression is detected by the clutch pedal switch 42, and the control by the automatic start control means 51 is stopped by this detection. You can switch to manual start simply by stepping on.

In the vehicle start control device described above,
When the automatic start stop means 55 is activated, an alarm is generated by the alarm means 57 and the driver is switched to manual start and transmitted to the driver, so that safety can be improved. In particular, it is possible to avoid the danger of jumping out when the clutch pedal 43 is accidentally depressed and the clutch pedal 43 is unintentionally returned.

In the above-described embodiment, the clutch type is not limited to a normal dry clutch, but may be applied to a wet clutch. As the clutch actuator, an electromagnetic proportional air pressure control valve may be used in addition to the exhaust method using the pressure air of the clutch booster by a magnetic valve. Further, the present invention is not limited to the air control in the clutch booster, but may be a hydraulic control system.

[0026]

As described above, in the vehicle start control device according to the first aspect, when the clutch pedal is depressed, the depression is detected by the sensor, and the control by the automatic start control means is stopped by this detection, and the manual start is performed. , It is possible to switch to manual start simply by depressing the clutch pedal.

In the vehicle start control device according to the second aspect, when the automatic start stop means is activated, an alarm is generated by the alarm means and the driver is notified that the vehicle has been switched to the manual start, thereby improving safety. Can be. In particular, it is possible to avoid a danger of jumping out when the clutch pedal is accidentally depressed and the clutch pedal is unconsciously returned.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an engine and a transmission to which an embodiment of a vehicle start control device according to the present invention is applied;

FIG. 2 is an explanatory diagram illustrating a clutch actuator that controls the clutch of FIG. 1;

FIG. 3 is a block diagram illustrating an embodiment of a vehicle start control device according to the present invention.

FIG. 4 is an explanatory diagram illustrating an operation of the vehicle start control device of FIG. 3;

FIG. 5 is an explanatory diagram showing an operation at the time of automatic start control of the clutch actuator of FIG. 2;

FIG. 6 is an explanatory diagram showing an operation at the time of manual control of the clutch actuator of FIG. 2;

[Explanation of symbols]

 42 Clutch pedal switch 51 Automatic start control means 53 Clutch pedal depression detection means 55 Automatic start stop means 57 Alarm means 59 Clutch actuator

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Hirohiro Ishida 1-chome, 1-chome, Ageo-shi, Saitama F-term in Nissan Diesel Industry Co., Ltd. (reference) 3J057 AA03 BB02 GA21 GB18 HH01 JJ01 JJ04

Claims (2)

[Claims] A clutch pedal configured to be capable of manual start; a sensor for detecting depression of the clutch pedal; automatic start control means for automatically starting the vehicle; and a depression of the clutch pedal detected by the sensor. A start control device for a vehicle, which automatically stops control by the automatic start control device and switches to manual start. 2. The vehicle start control device according to claim 1, further comprising an alarm unit that generates an alarm when the automatic start stop unit operates.