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The working principle of clutch Servo

Its working principle is that in the automobile clutch, the air booster is set in the hydraulic control mechanism, which is composed of a hydraulic cylinder, a housing, a power piston and a pneumatic control valve. It shares the same set of compressed air sources with the pneumatic brake and other starting equipment. The clutch booster is generally used on the hydraulically operated clutch mechanism. When the clutch is engaged or disengaged, the assembly can help increase the output force. The assembly is installed between the clutch master cylinder and the clutch without any mechanical transmission elements. The master cylinder and slave cylinder of the clutch are actually equivalent to two independent hydraulic cylinders. The master cylinder has inlet and outlet oil pipes while the slave cylinder has only one. When the clutch is pressed down, the pressure of the master cylinder passes through the slave cylinder, and the slave cylinder starts to work. Then the fork is released to separate the clutch pressure plate and pressure plate from the flywheel, and the shift can start. After the clutch is released, the slave cylinder will stop working, the clutch pressure plate and pressure plate will contact the flywheel again, the power will continue to transmit, and the oil in the slave cylinder will return. In order to enable the driver to sense the degree of clutch combination and separation at any time, a certain increasing function is formed between the automobile clutch pedal and the output force of the pneumatic booster. In case of failure of the pneumatic power assist system, the driver can also operate the clutch manually.
The clutch vacuum booster pump makes use of the principle that the engine sucks air when it is working to make one side of the booster create vacuum, and the pressure generated by the normal air pressure on the other side is relatively poor. This pressure difference is used to strengthen the braking thrust. When the push rod return spring is working, it makes the brake pedal at the initial position, and the one-way valve at the connection position between the straight air pipe and the straight air booster is open inside the booster. It is divided into vacuum air chamber and application air chamber diaphragm, which can be connected with each other. The two air chambers are isolated from the outside world most of the time, and the air chamber can be connected with the atmosphere through two valve devices. When the engine is running, step down the brake pedal, close the vacuum valve under the action of the push rod, and the air valve at the other end of the push rod will be opened at the same time, which will cause the imbalance of the air pressure in the cavity. When the air enters (the reason for the gasping sound when the brake pedal is stepped down), the diaphragm will be pulled to one end of the brake master cylinder under the action of negative pressure, and the push rod of the brake master cylinder will be driven, This realizes the function of further magnifying the strength of the legs.

Post time: Dec-30-2022