Electro-hydraulic servo braking system with pedal simulator

A pedal simulator, braking system technology, applied in the direction of brake safety system, brake, brake transmission, etc. Satisfy the driver and other problems, and achieve the effect of shortening the braking distance, ensuring safety, and increasing the braking pressure
CN112937532APending Publication Date: 2021-06-11南京经纬达汽车科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
南京经纬达汽车科技有限公司
Publication Date
2021-06-11

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Abstract

The invention discloses an electro-hydraulic servo braking system with a pedal simulator. The electro-hydraulic servo braking system comprises a shell, a brake pedal, a pushing mechanism driven by the brake pedal, a braking mechanism driven by the pushing mechanism to achieve braking, a braking pipeline hydraulic valve actively controlled by the pushing mechanism and a pedal simulator used for simulating the feeling of the brake pedal. The flow direction of brake fluid in the brake pipeline between a push rod piston cavity and a fluid storage tank is adjusted through the hydraulic valve, due to the incompressibility and liquidity of the brake fluid, the brake fluid flows in the push rod piston cavity, a first piston cavity, a second piston cavity and the fluid storage tank through the brake pipeline in the process that a driver steps on or loosens the brake pedal, pedal damping and hysteresis of the brake pedal are simulated, the hydraulic valve is a mechanical valve body, auxiliary electric control equipment does not need to be arranged, when a system fails, the hydraulic valve effectively avoids the situation that the pressure of the brake fluid flowing into a piston cavity of the simulator is reduced, and the incompressibility and the fluidity of the brake fluid are improved.
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Description

technical field

[0001] The invention belongs to the technical field of automobile braking, in particular to an electro-hydraulic servo braking system with a pedal simulator. Background technique

[0002] The braking system is an important part of motor vehicles such as automobiles, and most existing passenger vehicles use hydraulic braking systems. At present, most of the hydraulic braking systems of passenger cars use vacuum boosters, and drivers are accustomed to the brake pedal feel of vacuum boosters.

[0003] With the development of the automobile industry, more and more driver assistance (ADAS) functions are applied, and the traditional vacuum booster cannot meet the needs of ADAS for active braking. In recent years, electronic power-assisted braking products have emerged, and the electronic hydraulic braking system (EHB) is developed on the basis of traditional hydraulic brakes. The operating mechanism is an electronic brake pedal instead of the traditional hydrauli...

Claims

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