JPH0444128B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating device for a clutch, particularly an automatic clutch for a vehicle.

Automatic clutches or automatic transmissions have been proposed that include a clutch actuator that connects and disconnects a clutch, and in which the actuator is controlled by an electronic control device.

In a vehicle equipped with this type of clutch, driving is performed only by operating the accelerator and brake, and clutch operations for starting, stopping, shifting, etc. are based on input signals from various sensors and depending on the driving state.
Automatically controlled by electronic control unit.

In this way, the clutch control by the electronic control device is performed based on input signals from various sensors, so it can be used when starting on slopes, snowy roads, mud, etc., driving over curbs, running off in ditches, etc., where the conditions are different from normal and special. There is a problem in that when a driving operation is required, it becomes almost impossible to start. In order to solve these problems, control switching means such as gradient sensors and hill-climbing start switches have been proposed, but these methods have not been able to satisfy all driving conditions.

The present invention has been made to solve this problem, and does not require any operation by the driver during normal driving, and can disengage or disengage the clutch depending on the driving condition.
To provide a clutch operation device that automatically engages the clutch, partially engages the clutch, etc., and operates the clutch based on a pedal operation signal from the driver's foot when driving that requires relatively special techniques such as driving over a curb. This is what I am trying to do.

Hereinafter, the present invention will be specifically explained based on illustrated embodiments.

In the figure, 1 is an engine flyhole, 2 is a dry single-plate clutch, and includes a clutch pressure plate 2a, a clutch disk 2b disposed between the pressure plate 2a and the engine flyhole 1, and a clutch disk 2b disposed between the pressure plate 2a and the engine flyhole 1. A diaphragm spring 2c that presses the pressure plate 2a, a clutch release bearing 2d that operates the diaphragm spring 2c, and the release bearing 2d.
A clutch release lever 2e that operates the clutch release lever 2e, and a lever 2g whose one end is connected to the release lever 2e by a clutch shaft 2f.

3 is a clutch actuator, and a piston rod 3b of a piston 3a thereof is rotatably connected to the other end of the lever 2g by a pin 3c. Hydraulic action chamber A of the clutch actuator 3
is connected to a hydraulic pump 5, which is a hydraulic power source, through a pipe 4a.

Reference numeral 6 denotes an accumulator disposed in the piping 4a, and numeral 7 denotes an electromagnetic supply valve disposed in the piping 4a, which is normally closed and opens when energized.

The hydraulic action chamber A of the actuator 3 is connected to a first return pipe 4d that opens into the oil tank 8.
An electromagnetic discharge valve 9, which is normally closed and opens when energized, is disposed in the discharge pipe 4b.

The hydraulic chamber A of the actuator 3 also includes a second discharge pipe 4c that is arranged in parallel with the first discharge pipe 4b and connected to the return pipe 4d.
An electromagnetic on-off valve 10 equipped with a throttle that is normally open and closed when energized is disposed in the second discharge pipe 4c. In addition,
The second discharge pipe 4c may be of any type as long as it has a function of restricting the flow rate of flowing oil, and in addition to the above-mentioned arrangement in which the electromagnetic on-off valve 10 is provided with a throttle, an orifice may be provided in the pipe 4c. Alternatively, the pipe 4c itself may be made of a thin material. The other chamber B of the actuator 3 is the return pipe 4d.
is in contact with.

Reference numeral 11 denotes an electronic control device composed of a microcomputer, which controls a clutch position sensor 12 disposed opposite to a rod 3d connected to a piston 3a of the clutch actuator 3, and a clutch position sensor 12 that measures the rotational speed of the flyhole 1. An engine rotation sensor 13 to detect, an accelerator sensor 15 to detect the operating position of the accelerator pedal 14, and an output shaft 1 of the transmission 16.
The electromagnetic supply valve 7, the electromagnetic discharge valve 9, and the electromagnetic opening/closing valve 10 are automatically controlled according to the driving state of the vehicle based on input signals from a vehicle speed sensor 18, etc. that detects the rotation speed of the clutch. An automatic clutch control means is provided for controlling the yuator 3 as an automatic clutch.

According to the present invention, such an automatic clutch device is equipped with a clutch pedal 19 and a clutch pedal sensor 20 for detecting the operating position of the clutch pedal 19, and a signal from the clutch pedal sensor 20 is sent to the electronic control device 11. The clutch can also be actuated by inputting an input signal and operating the clutch pedal 19.

That is, when the output of the clutch pedal sensor 20 indicates the open state of the clutch pedal 19, the electronic control device 11 performs automatic clutch control according to the driving state of the vehicle based on the output from the automatic clutch control means. The output of the clutch pedal sensor 20 is connected to the clutch pedal 19.
Clutch control selection means is provided for outputting an output to the electromagnetic supply valve 7, electromagnetic discharge valve 9, and electromagnetic opening/closing valve 10 that control the clutch actuator 3 based on the output of the clutch pedal sensor 20. There is.

In the figure, reference numeral 21 denotes a power switch disposed in the wiring connecting the electronic control unit 11 and the power supply 22, and linked to the ignition switch.

Next, the operation of the device of the present invention will be explained.

During normal operation, the clutch pedal 19 is released, and the signal from the clutch pedal sensor 20 indicates the clutch pedal released state. Therefore, the electronic control unit 11 performs clutch control according to the operating state of the vehicle based on the output from the automatic clutch control means. For example, when changing gears, the output from the electronic control device 11 is based on a shift signal to energize the electromagnetic supply valve 7 to open it, cut off the energization to the electromagnetic discharge valve 9 and close it, and the electromagnetic on-off valve 10
energize to close this circuit. As a result, pressure oil is supplied from the accumulator 6 to the hydraulic chamber A of the clutch actuator 3 via the electromagnetic supply valve 7, causing the piston 3a to move to the right and disengaging the clutch 2. When the predetermined speed change operation is completed, the electromagnetic supply valve 7 is de-energized and closed, and the electromagnetic discharge valve 9 is energized and opened. As a result, the pressure oil in the hydraulic action chamber A of the actuator 3 is released. It is discharged through the electromagnetic discharge valve 9, the clutch 2 is engaged, and the vehicle is driven in a new gear. Note that the above-mentioned clutch contact speed may be controlled by pulse-controlling the energization to the electromagnetic discharge valve 9.
0 can be used in combination, and the valve can also be pulse-controlled to perform fine speed control.

Next, when the vehicle runs onto a curb or performs a special driving operation, when the clutch pedal 19 is actuated, a signal corresponding to the operating state of the clutch pedal 19 is input from the clutch pedal sensor 20 to the electronic control unit 11. be done. Based on the input signal from the clutch pedal sensor 20 and the input signal from the clutch position sensor 12, the electronic control device 11
The clutch control selection means controls the electromagnetic supply valve 7, the electromagnetic discharge valve 9, and the electromagnetic opening/closing valve 10, and controls the clutch actuator 3 in accordance with the operation of the clutch pedal 19 operated by the driver.

As described above, according to the present invention, when the output of the clutch pedal sensor indicates that the clutch pedal is in the open state, the clutch actuator is controlled as an automatic clutch, and when the output of the clutch pedal sensor indicates that the clutch pedal is in the operating state, the clutch actuator is controlled as an automatic clutch. In this system, the clutch actuator is controlled based on the operation of the clutch pedal operated by the driver, so when the vehicle runs on a curb or performs a special driving operation, the driver's will is not affected. Clutch control can be performed by. Clutch control can be performed according to the driver's will when special driving operations are required that differ from normal starting conditions, such as starting on a slope, snowy road, mud, etc., driving over a curb, or running off a ditch.

[Brief explanation of drawings]

The figure is a circuit diagram of the device of the present invention. 1...Engine fly hole, 2...Clutch, 3
...Clutch actuator, 4a...Piping, 4b...
First discharge pipe, 4c...Second discharge pipe, 5
…Hydraulic pump, 6…Accumulator, 7…Solenoid supply valve, 8…Oil tank, 9…Solenoid discharge valve, 10…
Electromagnetic on-off valve, 11... Electronic control device, 12... Clutch position sensor, 13... Engine rotation sensor, 14
...Accelerator pedal, 15...Accelerator pedal sensor, 18...Vehicle speed sensor, 19...Clutch pedal,
20...Clutch pedal sensor.

Claims (1)

[Claims] 1. A clutch actuator that connects and disconnects the clutch, a clutch position sensor that detects the operating state of the clutch, a clutch pedal sensor that detects the amount of depression of the clutch pedal, and when the output of the clutch pedal sensor is in the open state of the clutch pedal. automatic clutch control means for controlling the clutch actuator as an automatic clutch; and automatic clutch control means for controlling the clutch actuator as an automatic clutch; and automatic clutch control means for controlling the clutch actuator as an automatic clutch; A clutch operating device comprising an electronic control device equipped with clutch control selection means for controlling a clutch.