Working Principle of Brakes (1)-Jiaozuo Jianghe Brake Co., Ltd

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Working Principle of Brakes (1)

Release time:

2022-11-03 11:01

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Keywords: brake, electric hydraulic block brake

The general working principle of a braking system is to use the mutual friction between non rotating components connected to the vehicle body (or frame) and rotating components connected to the wheels (or transmission shaft) to prevent the rotation or tendency of the wheels.

A simple schematic diagram of the hydraulic braking system can be used to illustrate the working principle of the braking system. A metal brake drum with an inner circular surface as the working surface is fixed on the wheel hub and rotates with the wheel. On the fixed brake base plate, there are two support pins supporting the lower ends of the two curved brake shoes. The outer circular surface of the brake shoe is equipped with friction plates. The brake base plate is also equipped with a hydraulic brake wheel cylinder, which is connected to the hydraulic brake master cylinder installed on the frame using oil pipe 5. The piston 3 in the master cylinder can be operated by the driver through the brake pedal mechanism.

When the driver steps down on the brake pedal to compress the brake fluid, the wheel cylinder piston presses the brake shoes against the brake drum under hydraulic pressure, causing the brake drum to reduce its rotational speed or remain stationary.

When understanding the braking system of a certain car model, you may often hear the words "front disc rear drum" or "front disc rear drum". So, what exactly does it mean? Readers have inquired about automotive braking systems through email, such as the differences between disc brakes and drum brakes, the differences between ventilated discs and solid discs, and so on.

Many mid to low-end models with smaller engine displacement in the car market mostly use a "front disc rear drum" braking system, which means the front wheels use disc brakes and the rear wheels use drum brakes, such as common FAW Volkswagen Jetta, Changan Suzuki Alto and Lingyang, BYD Flyer, Dongfeng Yueda Kia Qianlima, Shanghai General Sail, and so on. Let's first briefly understand the drum brakes commonly used in the rear wheels.

Classification of brakes

Working Principle of Brakes (2)