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Electric power-assisted braking system with composite functions

A technology of electric power boosting and braking systems, applied in the field of vehicle engineering, can solve the problems of failure protection capability, complex structure, high manufacturing cost of brake-by-wire systems, etc., and achieve good matching with smart cars, small system pressure fluctuations, and high pressure regulation accuracy Effect

Pending Publication Date: 2016-07-20
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It is difficult to realize the decoupling of friction braking force and regenerative braking force with a pure electric power assist system, which greatly affects the regenerative braking function of electric vehicles
The brake-by-wire system has certain advantages in matching electric vehicles and smart vehicles. However, the manufacturing cost of the brake-by-wire system is relatively high, the structure is complex, and the failure protection capability is difficult to gain the trust of automobile manufacturers.

Method used

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  • Electric power-assisted braking system with composite functions

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Embodiment 1

[0026] Such as figure 1 As shown, the present invention discloses an electric power-assisted braking system with compound functions, which includes a brake pedal displacement sensor 1, a brake pedal 2, a pedal stroke simulator 3, an electric power assist assembly 4, a master cylinder 5, Wheel cylinder 6, hydraulic control unit 7, liquid storage tank 8, motor 9, deceleration and torque increasing mechanism 10, electronic control unit 11, normally open solenoid valve 12, normally closed solenoid valve 13 and other sensors 14 on the vehicle, wherein the pedal stroke simulation The device 3 comprises a pedal stroke simulator housing 301, a front piston 302, a front piston return spring 303, a rear piston 304, and a rear piston return spring 305. Among them, the electric booster assembly 4 includes an electric booster assembly housing 401, a sleeve 402, a rack 403, a booster assembly push rod 404, a push rod return spring 405, a buffer block 406, a reaction disc 407, and a master c...

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Abstract

The invention relates to the field of vehicle engineering and discloses an electric power-assisted braking system with composite functions. The electric power-assisted braking system comprises a brake pedal displacement sensor, a brake pedal, a pedal travel simulator, an electric power-assisted assembly, a main cylinder, a wheel cylinder, a hydraulic control unit, a liquid storage tank, a motor, a deceleration and torque increment mechanism, an electronic control unit, a normally open electromagnetic valve, a normally closed electromagnetic valve and a vehicle-mounted other sensor. By designing the pedal travel simulator, decoupling of friction braking force and regenerated braking force can be achieved, and continuous variable crural feeling is provided; a motor assisting device, a brake anti-lock system and the hydraulic control unit can be integrated, and an active braking function is achieved; and no interference exits between motor input and driver input, active braking can be achieved through the motor, and the electric power-assisted braking system can serve as a brake actuating mechanism of intelligent automobiles and unmanned automobiles.

Description

technical field [0001] The invention relates to the field of vehicle engineering, in particular to an electric power-assisted braking system with composite functions. Background technique [0002] With the development of electric vehicles and smart vehicles, new requirements are put forward for the braking system, such as the ability to independently generate the required braking force (active braking), to realize the function of braking energy recovery, and to be able to match the active safety system of the chassis. Functions, for example, anti-lock braking system (ABS, Anti-lockBrakingSystem) anti-skid control (ASR, AccelerationSkidcontrolsystem), vehicle stability control system (ESC, ElectronicStabilitycontroller) and adaptive cruise control (ACC, AdaptiveCruiseControl), etc. [0003] The traditional hydraulic braking system uses a vacuum booster and a master cylinder and wheel cylinder system. Among them, the vacuum booster needs to draw vacuum through the engine. Ho...

Claims

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Application Information

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IPC IPC(8): B60T13/74B60T7/04
CPCB60T13/74B60T7/042B60T2220/04B60T2270/30B60T2270/10B60T2270/60
Inventor 何睿吴坚潜磊刘海贞齐世迁
Owner JILIN UNIV
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