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Car electronic and hydraulic brake system capable of realizing time-sharing control

An automotive electronic and hydraulic braking technology, which is applied in the direction of brakes, brake transmissions, vehicle components, etc., can solve the problems of large volume and weight, complex structure, driver panic when empty travel, etc., and achieves easy design, simple structure, electromagnetic The effect of fewer valves

Active Publication Date: 2014-11-19
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this scheme are: the number of solenoid valves is large, the structure is relatively complicated, and the volume and weight are often large
The disadvantages of this solution are: the requirements for the dynamic characteristics of the motor are very high, the backup brake is not easy to design, and the idle travel of the pedal is likely to cause panic to the driver

Method used

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  • Car electronic and hydraulic brake system capable of realizing time-sharing control
  • Car electronic and hydraulic brake system capable of realizing time-sharing control

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0014] The present invention includes a brake output unit 1 , a hydraulic control unit 2 , a brake execution unit 3 and an electronic control unit 4 .

[0015] The brake output unit 1 includes a master cylinder housing 101, a first piston 102 and a second piston 103 are arranged at intervals in the master cylinder housing 101, and a first piston inner cavity is formed between the first piston 102 and the second piston 103 104, a first spring 105 with two ends connected to the first piston 102 and the second piston 103 is arranged in the first piston inner cavity 104; a second piston inner cavity 106 is formed between the second piston and the master cylinder housing, A second spring 107 with two ends connected to the second piston 103 and the inner wall of the master cylinder housing 101 is arranged in the second piston inner chamber 106 . The outsid...

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Abstract

The invention relates to a car electronic and hydraulic brake system capable of realizing time-sharing control. The car electronic and hydraulic brake system comprises a brake output unit, a hydraulic control unit, a brake execution unit and an electronic control unit. The system does not depend on engine vacuum, hydraulic forces of all brake cylinders are independently adjusted, and a pedaling feeling same as that of traditional brake is provided for a driver. Compared with an existing typical electronic and hydraulic brake system, time-sharing control over all brake channels can be realized, the brake channels do not need to be provided with independent pressure increasing valves and pressure reducing valves, the number of electromagnetic valves in the hydraulic control unit is reduced, and therefore the system is simpler in structure and smaller in size and weight. By means of the car electronic and hydraulic brake system, coordinated control over basic brake, other brake functions like ABS / ESP and regenerative brake can be realized.

Description

technical field [0001] The invention relates to a brake system, in particular to an automotive electronic hydraulic brake system capable of realizing time-sharing control. Background technique [0002] With the development of automobile technology, the requirements for vehicle safety, energy saving, and environmental protection have gradually increased, and active safety devices (such as electronic stability program (ESP)) and electric vehicle technology have continued to develop. The two put forward new requirements for the vehicle braking system: the braking pressure of each wheel cylinder can be independently controlled, and the braking feeling of the brake pedal is the same as that of the traditional braking system. In addition, EVs require braking systems that do not depend on engine vacuum. [0003] In recent years, the brake-by-wire system, as a new type of brake system that can meet the above requirements, has attracted more and more attention. Among them, the elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/68
Inventor 潘宁于良耀王治中宋健张永生魏文若
Owner TSINGHUA UNIV