Hydraulic Clutch Actuation System
The design of the clutch actuation system is very similar to that of a hydraulic brake system.
The hydraulic clutch actuation system uses a hydraulic line rather than a mechanical connection to transmit the pedal movement. The forces are transmitted purely hydraulically and the brake fluid is used for drive transmission.
A clutch master cylinder actuates a clutch slave cylinder through a hydraulic line. When the operating force is released, the hydraulic clutch actuation system is depressurized and the clutch slave cylinder is pushed back by the diaphragm spring of the clutch mechanism. With this type of actuation, the clutch release bearing remains in constant contact with the surrounding diaphragm spring of the clutch mechanism. The clutch release bearing must therefore be at a permanently speed-resistant.
The hydraulic clutch actuation system is supplied by the brake fluid reservoir.
Displaced hydraulic fluid can escape from the clutch master cylinder's compensating bore into the reservoir provided for this purpose. This means that the hydraulic clutch actuation system is self-adjusting.
The CPP sensor is located on the clutch master cylinder and is not adjustable. An actuated clutch pedal activates the CPP sensor.
The hydraulic clutch actuation system consists of the following components:
- Brake fluid reservoir
- Clutch pedal
- CPP sensor
- Clutch master cylinder
- Clutch slave cylinder
- Clutch hydraulic tubes
- Clutch release bearing
- Clutch pressure plate
- Clutch disc