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Hydraulic booster for automobile brake

A technology of automobile braking and hydraulic power assist, applied in the field of auto parts, can solve the problems of abnormal vibration of the brake pedal, poor driving comfort, and the brake pedal cannot produce a braking feeling, so as to improve driving comfort and avoid abnormal dithering effect

Active Publication Date: 2018-05-04
ZHEJIANG VIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing electronically controlled hydraulic booster system, the brake pedal cannot produce a brake pedal feel, and the brake pedal will produce abnormal vibration, and the driving comfort during braking is poor.

Method used

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  • Hydraulic booster for automobile brake
  • Hydraulic booster for automobile brake

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Embodiment Construction

[0023] In electric vehicles and hybrid vehicles, an electronically controlled hydraulic power assist system is installed, and a hydraulic source is used instead of a vacuum source as a power source to implement driving assist actions. The system includes a hydraulic booster and a hydraulic control module.

[0024] The hydraulic control module is the pressure control part of the system, including the electronic control unit, increasing and decreasing solenoid valves, hydraulic sensors, motors, oil pumps, high-pressure accumulators, check valves, etc. Its function is to receive the CAN signal and braking signal of the whole vehicle, make a judgment on the braking condition, and according to the corresponding logic algorithm, control the action of the pressure increase and decrease valve, release the oil pressure in the high pressure accumulator, and enter the corresponding brake circuit . Finally, it acts on the hydraulic booster to generate braking force. Its motor and oil pu...

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Abstract

The invention discloses a hydraulic booster for automobile braking, which comprises a boosting cavity and oil storage cavity, wherein a tread feeling simulation cavity is arranged between the second end of a guiding piston and the first end of a pushing piston; an oil compensation cavity is arranged between the outer ring wall of the pushing piston and the inner wall of the valve cavity of a booster valve body; a low-pressure energy accumulation cavity is arranged between an energy accumulation piston and a sealing piston; the boosting cavity is provided with an oil inlet / outlet channel; the tread feeling simulation cavity is provided with an oil-pressure oil inlet valve opening; the oil-pressure oil inlet valve opening communicates with the inner cavity of an energy accumulator valve body; a non-return valve unidirectionally communicating the tread feeling simulation cavity through the inner cavity of the energy accumulator valve body is arranged at the oil-pressure oil inlet valve opening; the inner cavity of the energy accumulator valve body communicates with the low-pressure energy accumulation cavity through an oil line communication opening; the oil compensation cavity is provided with a compensation oil hole; and the compensation oil hole communicates with the oil storage cavity through an oil pipe. Automobile braking is realized through the hydraulic booster, a cumbersome braking boosting system of a new energy automobile can be omitted, and the hydraulic booster has the advantages of safe and comfortable braking and energy loss reduction.

Description

technical field [0001] The invention relates to automobile parts, in particular to a hydraulic booster for automobile braking. Background technique [0002] In electric vehicles and hybrid vehicles, an electronically controlled hydraulic power assist system is designed, which uses a hydraulic source instead of a vacuum source as a power source to implement driving assist actions. [0003] In the existing electronically controlled hydraulic booster system, the brake pedal cannot produce a brake pedal feeling, and the brake pedal will produce abnormal vibrations, and the driving comfort during braking is poor. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a hydraulic booster for automobile braking, the brake pedal can simulate the brake pedal feeling, avoid the abnormal vibration of the brake pedal, and improve the driving comfort during braking. [0005] In order to solve the above technical problems, the prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T13/12B60T13/128B60T13/135B60T13/14
CPCB60T13/12B60T13/144B60T13/145
Inventor 苑庆泽马志敏钟焕祥姚玉丽
Owner ZHEJIANG VIE SCI & TECH
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