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Classification of brakes

Classification of brakes

① Friction brake. Braking relies on the frictional force between the braking component and the moving component.

2022-11-03

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Working Principle of Brakes (1)

Working Principle of Brakes (1)

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.

2022-11-03

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Working Principle of Brakes (2)

Working Principle of Brakes (2)

There are significant differences in practical applications, with disc brakes being better than drum brakes. Drum brake and disc brake have their own advantages and disadvantages. In terms of braking effect, the difference between disc brake and drum brake is not significant, because during braking, kinetic energy is converted into thermal energy through braking. If the car body is compact and lightweight, drum brakes on the rear wheels are sufficient.

2022-11-03

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Introduction to the braking system

Introduction to the braking system

The functions of slowing down or even stopping a moving car, stabilizing the speed of a downhill car, and keeping a stopped car stationary are collectively referred to as braking; A series of specialized devices installed on a car so that the driver can apply a certain amount of force (mainly on the road surface) to certain parts of the car (mainly on the wheels) based on road and traffic conditions, to brake the car to a certain extent. This controllable external force for braking the car is called braking force; This series of specialized devices is called a braking system.

2022-11-03

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Introduction to floating clamp disc type

Introduction to floating clamp disc type

Floating caliper disc brake, brake caliper body 2 is connected to axle 7 through guide pins 6 and can move axially relative to brake disc 1. The brake caliper body is only equipped with an oil cylinder on the inner side of the brake disc, while the outer brake block is attached to the caliper body.

2022-11-03

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Booster Introduction

Booster Introduction

Vacuum boosters are widely installed on cars as brake boosters, utilizing the vacuum at the engine throat to assist the driver in manipulating the brake pedal. According to the number of vacuum booster membranes, vacuum boosters are divided into two types: single diaphragm type and series diaphragm type. Work process: When the vacuum booster is not working (Figure a), spring 15 pushes the push rod and plunger 18 to the rear limit position (i.e. vacuum valve opens), and rubber valve 9 is pressed onto the air valve seat by the spring (i.e. air valve closes). The front and rear chambers of the servo chamber are connected to each other through channel A, control valve chamber, and channel B, and are isolated from the air. After the engine starts working and the vacuum check valve is opened, a certain degree of vacuum is generated in both the left and right chambers of the servo chamber. When the brake pedal is pressed, the air chamber diaphragm seat 8 is initially fixed, and the control valve push rod 12 and control valve plunger 18 are pushed forward relative to the diaphragm seat 8 by the control force from the pedal mechanism. When the gap between the plunger and the rubber reaction disc 7 disappears, the control force is transmitted to the brake master cylinder push rod 2 through the reaction disc 7 (as shown in the following figure). At the same time, rubber valve 9 moves forward with the control valve plunger until it contacts the vacuum valve seat on diaphragm seat 8. At this point, the front and rear chambers of the servo chamber are isolated. 3. The control valve push rod 12 continues to push the control valve plunger forward until the air valve seat 10 on it leaves the rubber valve 9 at a certain distance. The external air is filled into the rear chamber of the servo chamber (as shown in the figure below), reducing its vacuum degree. During this process, diaphragm 20 and the valve seat continue to move forward until the valve comes into contact with the air valve seat again. Therefore, in any equilibrium state, the stable vacuum degree in the rear chamber of the servo chamber is an increasing function of the pedal stroke.

2022-11-03

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