Electro-hydraulic power braking system for automobile

Abstract

The invention discloses an electro-hydraulic power braking system for an automobile. The braking system comprises a signal sensing part, a calculating and controlling unit and a signal executing part, wherein a displacement sensor is connected with a brake pedal through a linkage rod; signals of the displacement sensor, a time signal generator, a wheel speed sensor and an automobile speed sensor are input into the calculating and controlling unit so as to calculate accelerated speed of the brake pedal and a wheel real-time slip ratio; a signal of a tire pressure and tire temperature sensor is input into the calculating and controlling unit through a signal transmitter and a signal receiver so as to calculate tire load coefficient; the calculating and controlling unit is used for controlling the value of the current of an input current amplifier according to the calculating result; under an effect of electromagnetic attraction forces generated by an electromagnetic coil and an iron core component, an armature is used for driving a piston to move down; and oil of both a power cylinder and a braking cylinder rapidly flows into a brake wheel cylinder so that the braking of the automobile is realized. The electro-hydraulic power braking system for the automobile, disclosed by the invention, is advantaged in that a brake power effect can be provided to a hydraulically-braked automobile; the braking is convenient and fast; the braking distance is reduced; and the safety of the automobile in running is improved.

Description

technical field [0001] The invention relates to an electronically controlled hydraulic power-assisted braking system for automobiles, which is suitable for all vehicles adopting hydraulic braking. Background technique [0002] With the continuous and rapid development of my country's economy, the continuous improvement of road traffic conditions and the steady improvement of people's consumption levels, the number of domestic car ownership has increased rapidly. At the same time, traffic accidents caused by cars are also increasing. People's health and property safety under greater threat. [0003] Automobile braking system is an important part of the automobile, its performance directly affects the driving safety of the automobile. In order to reduce the driver's operating intensity and ensure the safety of the car, the braking system is usually equipped with a booster device. At present, the most widely used hydraulic brake system in automobiles is the vacuum booster devic...

AI Technical Summary

Problems solved by technology

For vehicles with diesel engines and gasoline direct injection engines designed to meet higher emission environmental protection requirements, since the vacuum pressure corresponding to the operating conditions of the engine cannot be provided at the intake pipe to meet the requirements of the vacuum-assisted hydraulic braking system, For diesel engines and gasoline direct injection engines, vacuum pumps are generally used to provide vacuum sources, but after the vacuum pumps have been used for a period of time, the spherical check valve in the pump will be stuck between the vacuum pump and the vacuum booster due to wear and tear. Disabling the vacuum booster resulting in high pedal effort when braking

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