Hydraulic braking system having energy feedback and ESP functions and control method of hydraulic braking system

A technology of hydraulic braking and energy feedback, applied in ESP control system, braking control system, hydraulic braking transmission device, etc., can solve the problems of high cost and difficult manufacturing

Active Publication Date: 2015-03-25
TSINGHUA UNIV
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, these systems have redesigned the traditional hydraulic braking system to varying degrees, adding high-pressure accumulators, elect

Method used

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  • Hydraulic braking system having energy feedback and ESP functions and control method of hydraulic braking system
  • Hydraulic braking system having energy feedback and ESP functions and control method of hydraulic braking system

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Embodiment Construction

[0014] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0015] Such as figure 1 As shown, the hydraulic pipeline in the traditional vehicle dynamics control system is mainly composed of oil storage chamber 1, vacuum booster 2, brake pedal 3, brake master cylinder 4, brake wheel cylinder 5 and pressure adjustment module 6, etc. . The brake master cylinder 4 controls the pressure of the brake wheel cylinder 5 through the X-shaped oil circuit and the pressure regulating module 6 provided on the oil circuit. Wherein, the brake wheel cylinder 5 includes a right rear wheel cylinder 51 , a left front wheel cylinder 52 , a right front wheel cylinder 53 and a left rear wheel cylinder 54 . The brake master cylinder 4 controls the right rear wheel cylinder 51 and the left front wheel cylinder 52 respectively through the first oil circuit, and controls the right front wheel cylinder 53 and the left rear wheel cylind...

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Abstract

The invention relates to a hydraulic braking system having energy feedback and ESP functions and a control method of the hydraulic braking system. Two oil paths arranged in an X shape in a pressure regulating module in the hydraulic system are provided with identical devices and have the identical control mode, and only the first oil path is taken as an example and is characterized in that a first pedal simulator, a third normally-open valve and a first hydraulic branch are arranged on a pipeline between a first normally-closed valve and an inlet of a first oil pump, one end of the first pedal simulator is connected with one end of the first normally-closed valve, the other end of the first pedal simulator is connected with the inlet of the first oil pump through the third normally-open valve and the first hydraulic branch in sequence; a first orifice, a third one-way valve, a first oil storage tank and a third normally-closed valve are sequentially arranged on the first hydraulic branch. A fourth one-way valve is arranged on a pipeline between the first normally-closed valve and a first pressure increasing valve, and a fourth normally-open valve is arranged on a pipeline between a first normally-open valve and the first pressure increasing valve.

Description

technical field [0001] The invention relates to a vehicle hydraulic stability control system and method, in particular to a hydraulic braking system with energy feedback and ESP functions and a control method thereof. Background technique [0002] The braking energy feedback system can recover the mechanical energy of the vehicle during the deceleration process of the vehicle, which is an important technology to improve the energy economy of the electric vehicle. But at the same time, the intervention of motor feedback braking will affect the braking comfort and braking safety of the vehicle under normal and extreme braking conditions. Therefore, in response to the requirements of braking energy feedback for electric vehicles, the research and development of energy feedback hydraulic braking system on the basis of the original braking system has become a hot spot that well-known automobile companies and parts manufacturers in the world are competing to develop. The energy f...

Claims

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Application Information

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IPC IPC(8): B60T11/10B60T8/34
CPCB60T8/344B60T11/10B60T2270/30B60T2270/613
Inventor 张俊智李禹橦吕辰袁野
Owner TSINGHUA UNIV
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