The clutch is located in the flywheel housing between the engine and the gearbox. The clutch assembly is fixed on the rear plane of the flywheel with screws. The output shaft of the clutch is the input shaft of the gearbox. The most familiar clutch components are the clutch pressure plate and clutch discs. Automobile clutches are classified as an operating clutch, diaphragm spring clutch, peripheral spring clutch, central spring clutch, etc.

    With the application of electronic technology in automobiles, an automatic clutch system has also entered the automotive field. This kind of clutch controlled by the control unit (ECU) has been applied to some cars so that an important step of manual transmission shifting - the disengagement and engagement of the clutch can be automatically completed in a timely manner, which simplifies the driver's manipulation action.

    Traditional clutches are divided into two types: cable-pull and hydraulic, and automatic clutches are also divided into two types: mechanical motor-type automatic clutches and hydraulic-type automatic clutches. The ECU of the mechanical motor-type automatic clutch collects signals such as the accelerator pedal, engine speed sensor, vehicle speed sensor, etc., and sends commands to drive the servo motor after processing, and drives the clutch action through mechanical methods such as pull rods; the hydraulic automatic clutch is driven by the ECU. Hydraulic system, through hydraulic control clutch action.

    The hydraulic automatic clutch adds an electronic control unit (ECU) and a hydraulic execution system on the basis of the current common diaphragm clutch and changes the pedal-operated clutch cylinder piston to a switch device to control the electric oil pump to operate the clutch cylinder piston. The transmission control unit (ECU) and the engine control unit (ECU) are integrated together. According to the sensor feedback information such as accelerator pedal, transmission gear, transmission input/output shaft speed, engine speed, throttle opening, and other sensor feedback information, the clutch maximum is calculated. Optimum engagement time and speed.