Method and device for controlling brake boost system

A technology of brake boosting and control methods, which is applied in the direction of brake safety systems, brake transmission devices, brakes, etc., can solve the problems of potential safety hazards, reduced life, and long working hours of vacuum pumps, etc., to improve service life and safety sexual effect

Active Publication Date: 2017-12-12
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a control method and device for a brake booster system to solve the technical problems

Method used

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  • Method and device for controlling brake boost system
  • Method and device for controlling brake boost system
  • Method and device for controlling brake boost system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Embodiment 1 of the present invention provides a method for controlling a brake booster system. figure 1 It is a schematic flow chart of the method for controlling the brake booster system provided by Embodiment 1 of the present invention. Such as figure 1 As shown, the brake booster system control method in this embodiment may include the following steps:

[0063] Step 101, obtain the atmospheric pressure of the current environment and the vacuum degree in the vacuum booster.

[0064] Step 102, according to the atmospheric pressure, determine the opening threshold and closing threshold of the vacuum pump.

[0065] Step 103, when the vacuum degree in the vacuum booster is less than the opening threshold, turn on the vacuum pump, and when the vacuum degree in the vacuum booster is greater than the closing threshold, turn off the vacuum pump.

[0066] The control method of the brake booster system provided by the invention is suitable for pure electric vehicles in whic...

Embodiment 2

[0079] Embodiment 2 of the present invention provides a method for controlling a brake booster system. The method in this embodiment is based on the technical solution provided in the first embodiment, and provides a specific workflow.

[0080] Figure 4 It is a schematic flowchart of the control method of the brake booster system provided by the second embodiment of the present invention. Such as Figure 4 As shown, the brake booster system control method in this embodiment may include the following steps:

[0081] Step 201, the vehicle is powered on.

[0082] Step 202, obtain the atmospheric pressure of the current environment and the vacuum degree in the vacuum booster 2 .

[0083] Step 203, according to the atmospheric pressure, determine the control thresholds of the vacuum pump 3: on threshold V_on, off threshold V_off.

[0084] Step 204, judging whether the degree of vacuum in the vacuum booster 2 is less than the threshold value V_on. If yes, execute step 205, ot...

Embodiment 3

[0202] Embodiment 3 of the present invention provides a control device for a brake booster system. Figure 5 It is a structural block diagram of a brake booster system control device provided in Embodiment 3 of the present invention. Such as Figure 5 As shown, the device in this embodiment may include:

[0203] An acquisition module 301, configured to acquire the atmospheric pressure of the current environment and the degree of vacuum in the vacuum booster;

[0204] A determining module 302, configured to determine an opening threshold and an closing threshold of the vacuum pump according to the atmospheric pressure;

[0205] The switch module 303 is configured to turn on the vacuum pump when the vacuum degree in the vacuum booster is less than the opening threshold, and turn off the vacuum pump when the vacuum degree in the vacuum booster is greater than the closing threshold.

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PUM

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Abstract

The invention discloses a method and a device for controlling a brake boost system. The method comprises the following steps: acquiring the atmospheric pressure of the current environment and a vacuum degree in a vacuum booster; determining the opening threshold value and the closing threshold value of a vacuum pump according to the atmospheric pressure; and opening the vacuum pump when the vacuum degree in the vacuum booster is less than the opening threshold value, and closing the vacuum pump when the vacuum degree in the vacuum booster is greater than the closing threshold value. The method and the device for controlling the brake boost system realize self-adaptive adjustment for the opening threshold value and the closing threshold value of the vacuum pump while ensuring that reliable and effective brake boost is provided for a driver, solve the problem of a too long working time and even continuous working of a vacuum pump in a high-attitude area, caused by a fixed threshold value, and effectively prolong the service lives of the vacuum pump and the brake boost system, and effectively improve the safety of the vacuum pump and the brake boost system.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a method and device for controlling a brake booster system. Background technique [0002] In the face of increasingly severe energy and environmental problems, the increasing demand for oil resources and the environmental pollution caused by traditional fuel vehicles have attracted people's attention. At the same time, energy-saving and new energy vehicles are becoming research hotspots. The development of new energy vehicles, especially pure electric vehicles with zero pollution and zero emissions, is not only of great significance to energy security and environmental protection, but also an important direction for the transformation and upgrading of the automotive field and technological breakthroughs. It is the future development trend of the automotive field . [0003] The brake booster system is an important part of the vehicle brake mechanism, and its reliable a...

Claims

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Application Information

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IPC IPC(8): B60T13/72B60T17/22
CPCB60T13/72B60T17/22
Inventor 李玮代康伟梁海强王亚楠罗曼
Owner BEIJING ELECTRIC VEHICLE
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