When the clutch pedal is not stepped on, there is a gap between the master cylinder push rod and the master cylinder piston. Due to the limit of the limit screw on the oil inlet valve, there is a small gap between the oil inlet valve and the piston. In this way, the oil storage cylinder communicates with the left cavity of the master cylinder through the pipe joint and the oil passage and the oil inlet valve. When the clutch pedal is depressed, the piston moves to the left, and the inlet valve moves to the right relative to the piston under the action of the return spring, eliminating the gap between the inlet valve and the piston.
Continue to step on the clutch pedal, the oil pressure in the left chamber of the master cylinder increases, the brake fluid in the left chamber of the master cylinder enters the booster through the oil pipe, the booster works, and the clutch is disengaged.
When the clutch pedal is released, the piston moves faster to the right under the action of the co-located spring. Due to the resistance of the brake fluid flowing in the pipeline, the speed of the back to the master pump is slower, so a certain The degree of vacuum, the oil inlet valve moves to the left under the effect of the pressure difference between the left and right oil chambers of the piston, and a small amount of brake fluid in the oil storage cylinder flows into the left chamber of the master cylinder through the oil inlet valve to make up for the vacuum. When the brake fluid that originally entered the booster from the master cylinder flows back to the master cylinder, excess brake fluid appears in the left chamber of the master cylinder. This excess brake fluid will flow back to the oil reservoir through the oil inlet valve.
The clutch master cylinder is connected to the clutch pedal and connected to the clutch booster through the oil pipe. The function is to collect pedal stroke information and realize the clutch disengagement through the function of booster.
Clutch master cylinder. When the driver depresses the clutch pedal, the push rod pushes the master cylinder piston to increase the oil pressure. The hose enters the centrifugal pump, forcing the centrifugal rod to push the separation fork and push the separation bearing forward; when the driver releases When the clutch pedal is released, the hydraulic pressure is released, the release fork gradually returns to its original position under the action of the return spring, and the clutch is in the engaged state again.
There is a radial long through hole in the middle of the piston of the clutch master cylinder. The limit screw passes through the long round hole of the piston to prevent the piston from rotating. The oil inlet valve is inserted into the axial hole at the left end of the piston. The oil inlet valve seat is inserted through the straight hole on the piston surface. Piston hole.