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Hydraulic brake power assisting auxiliary control method based on ESC

A technology of hydraulic braking and auxiliary control, applied in the direction of brakes, brake components, brake safety systems, etc., can solve problems such as insufficient vacuum of boosters

Active Publication Date: 2021-12-03
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above, the present invention aims to provide an ESC-based hydraulic brake boosting auxiliary control method to solve the problem of insufficient vacuum of the booster under special working conditions, thereby ensuring the safety of vehicle braking

Method used

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  • Hydraulic brake power assisting auxiliary control method based on ESC

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Embodiment Construction

[0028] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0029] The present invention proposes an embodiment of an ESC-based hydraulic brake boosting auxiliary control method, specifically, as figure 1 shown, including:

[0030] Step S1. Obtain the pressure value corresponding to the maximum boosting point of the vacuum booster after the brake pedal action is detected;

[0031] Step S2, according to the brake pedal action, the pressure value and the pre-calibrated vacuum boosting characteristic curve, determine the boosting capability of the vacuum booster, and analyze the driver's...

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Abstract

The invention discloses a hydraulic brake boosting auxiliary control method based on ESC, which has the main design concept that an electronic stability control system ESC is matched with a vacuum booster assembly to provide boosting assistance, and when the vacuum degree of a vehicle is insufficient, so that the brake boosting is limited, insufficient or completely invalid, the ESC actively provides extra auxiliary boosting assistance, and the vehicle is actively pressurized and decelerated. Specifically, when it is monitored that the vacuum degree of the vacuum booster is reduced or no vacuum exists, the braking intention of a driver is judged according to a preset boosting characteristic curve in combination with a brake pedal signal and a main cylinder pressure signal, and therefore the ESC assists the vehicle to conduct active pressurization according to the braking intention, and amplification of a braking request is achieved so as to complete braking assistance. According to the method, the influence of insufficient brake assistance on the driving feeling of a driver can be effectively reduced, the brake assistance requirement of safe parking of the vehicle is met, and the brake performance of the vehicle is guaranteed.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, in particular to an ESC-based hydraulic brake boosting auxiliary control method. Background technique [0002] With the development of passenger car technology, the market pays more attention to car safety while paying attention to car comfort and power. Braking performance is one of the main safety performances of automobiles. The quality of braking performance is directly related to the size of traffic accidents and property losses. Most traffic safety accidents are often related to small braking deceleration and long braking distances. Therefore, braking performance is an important guarantee for the safe driving of automobiles. [0003] At present, the brake booster unit used in almost all passenger cars is a vacuum booster type. Under certain special working conditions of the vehicle (such as driving in high altitude areas, cold start at low temperature, etc.), the vacuum degree of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/18B60T17/22
CPCB60T17/18B60T17/22B60T17/226
Inventor 胡磊董良佘建平叶海舰陈国三吴海波孙琼高波李鸿飞丁吉民苏媛王立鑫葛广凯
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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