What is the function of the brake wheel cylinder?

1 Answers
LeAbel
07/29/25 10:11pm
The brake wheel cylinder, also known as the hydraulic brake master cylinder, is the power source of the service brake system. The braking force comes from the pedal force applied by the driver on the brake pedal and the vacuum degree of the engine intake manifold (vacuum booster), with the vacuum degree being the main power source of the master cylinder. Here is relevant information about the brake wheel cylinder: 1. Function: The function of the brake wheel cylinder is to convert the hydraulic energy input from the brake master cylinder into mechanical energy to bring the brake into working condition. There are two types of brake wheel cylinders: single-piston and double-piston. The single-piston brake wheel cylinder is mainly used in double-leading shoe and double-trailing shoe brakes, while the double-piston brake wheel cylinder is more widely used and can be applied to leading-trailing shoe brakes, bidirectional double-leading shoe brakes, and bidirectional self-energizing brakes. 2. Classification: The clearance self-adjusting device is divided into one-time adjustment type and step type. The former automatically restores the clearance in the brake to a preset value after each braking, while the latter requires multiple braking actions to eliminate accumulated excessive clearance during braking or release. The excessive clearance of the brake is not entirely caused by the wear of the friction pair but also includes the thermal expansion of the brake drum and the clearance caused by the elastic deformation of the shoe and hub.
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