What is the automotive vacuum booster assembly
Youdaoplaceholder0 Automotive vacuum booster assembly is a key component in an automotive braking system, designed to assist the driver in providing additional assistance during braking, thereby reducing the force on the brake pedal and ensuring that the vehicle can stop quickly and smoothly.
Structural composition and working principle
The vacuum booster assembly is mainly composed of the following parts:
Youdaoplaceholder0 Pump body : To provide the necessary seal and support.
Youdaoplaceholder0 Rotor : Drives the slider to rotate.
Youdaoplaceholder0 slider : slides against the inner wall of the pump body under the action of centrifugal force.
Youdaoplaceholder0 Pump cover : Seals the pump body to prevent gas leakage.
Youdaoplaceholder0 Gear : Transmits power.
Youdaoplaceholder0 Sealing ring : Ensure airtightness.
During operation, the eccentric rotor with four sliders rotates counterclockwise. Under the action of its own centrifugal force, the sliders slide tightly against the inner wall of the pump body. The suction chamber keeps expanding, and the extracted gas enters the suction chamber through the suction pipe. When the slider rotates to a certain position, the suction is completed, the gas is isolated, the rotor continues to rotate, and the isolated gas is gradually compressed, with the pressure increasing. When the chamber is turned to be connected to the vent, the gas is discharged from the vent .
Type and Function
The vacuum booster assembly is usually located between the brake pedal and the brake master cylinder. It utilizes the principle that the engine sucks in air during operation to create a vacuum on one side of the booster, generating a pressure difference relative to the normal air pressure on the other side. This pressure difference is utilized to enhance the braking thrust. Even if there is only a small pressure difference on both sides of the diaphragm, due to the large area of the diaphragm, a large thrust can be produced to push the diaphragm towards the end with less pressure .
Maintenance and troubleshooting
For the maintenance and troubleshooting of vacuum boosters, the following points should be noted:
Youdaoplaceholder0 Regularly check the wear of the sealing ring and the pump body to ensure good air tightness.
Youdaoplaceholder0 Check the wear of the slider and rotor to ensure they are functioning properly.
Youdaoplaceholder0 Pay attention to the working condition of the engine , make sure it can produce vacuum properly.
Youdaoplaceholder0 Replace worn parts in time to avoid affecting braking effect.
Youdaoplaceholder0 The main function of the car vacuum booster assembly is to use the vacuum effect to enhance the braking effect, making it easier for the driver to step on the brake pedal, thus ensuring that the vehicle can brake safely and quickly .
Working principle
The vacuum booster utilizes the principle of air intake when the engine is running to create a vacuum state on one side of the booster, forming a pressure difference with the normal air pressure on the other side. Although the pressure difference on both sides of the diaphragm may be very small, due to the large area of the diaphragm, a significant thrust can be generated, pushing the diaphragm to move towards the side with less pressure. In BRAKING process, vacuum booster moves the diaphragm inside by controlling the degree of vacuum entering and amplifies the driver 's pedal force through the coupling device to assist human braking operation .
Structural composition
A vacuum booster is usually composed of a vacuum servo chamber and a control valve. Inside, there is a diaphragm that divides the space into a real air chamber and an application air chamber. These two air chambers are interconnected but mostly isolated from the outside world. Through specific valve devices, the connection or disconnection between the air chamber and the atmosphere can be achieved. When the engine is running, pressing the brake pedal closes the vacuum valve and opens the air valve at the same time, allowing air to enter, causing an imbalance of air pressure in the air chamber, which pushes the diaphragm under negative pressure and drives the push rod of the master cylinder, further amplifying the driver 's leg force .
Installation location and maintenance
The vacuum booster is generally installed between the brake pedal and the brake master cylinder. Sometimes, for the convenience of installation, it is combined with the master cylinder as a whole. A part of the main cylinder will extend into the housing of the vacuum booster. In terms of maintenance and upkeep, it is necessary to regularly inspect the sealing performance and working condition of the vacuum booster to ensure its normal operation.
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