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What is the working principle of the brake master cylinder?

1 Answers

Frances

07/29/25 9:58am

Here is an introduction to the working principle of the brake master cylinder: 1. When the brake pedal is pressed: The master cylinder piston moves forward, closing the bypass hole and creating oil pressure in front of the piston. The oil pressure is then transmitted through the pipeline to the brake wheel cylinder. 2. When the brake pedal is released: The master cylinder piston returns under the action of oil pressure and the return spring, reducing the pressure in the brake system. After the piston returns, excess oil flows back into the reservoir. 3. During two-pedal braking: Oil from the reservoir enters the area in front of the piston through the compensation hole, increasing the oil volume in front of the piston, thereby enhancing braking force during braking. Additional information: Here is an introduction to the brake master cylinder: 1. The brake master cylinder, also known as the main oil (or air) cylinder, primarily functions to push brake fluid (or gas) to each brake wheel cylinder to actuate the pistons. 2. The brake master cylinder is a single-acting piston-type hydraulic cylinder that converts the mechanical energy input from the pedal mechanism into hydraulic energy. Brake master cylinders come in single-chamber and dual-chamber types, used in single-circuit and dual-circuit hydraulic brake systems, respectively.

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