A brake pressure compensation control system and method

Abstract

The invention relates to a braking pressure compensation control system and method. The system comprises an air compressor, a parking air cylinder, a driving air cylinder, a pressure adjusting controller, a first pressure sensor, a second pressure sensor, a first solenoid valve, a second solenoid valve and an ignition lock, wherein the first pressure sensor, the second pressure sensor, the first solenoid valve, the second solenoid valve and the ignition lock are electrically connected with the pressure adjusting controller separately; when the ON gear of the ignition lock is electrically switched on, the pressure adjusting controller detects the pressure of the parking air cylinder and the pressure of the driving air cylinder, and when it is detected that the pressure of the driving air cylinder is smaller than a first set value, the first solenoid valve is switched off; when it is detected that the pressure of the driving air cylinder is smaller than a second set value, the pressure of the parking air cylinder is larger than the second set value, and the second set value is smaller than the first set value, the second solenoid valve is switched on, and then the parking air cylinder supplements the pressure to the driving air cylinder. According to the braking pressure compensation control system and method, the complete vehicle braking safety is improved.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, in particular to a braking pressure compensation control system and method. Background technique [0002] The car uses the brake system to brake the vehicle to slow down, such as figure 1 As shown, when the vehicle parking air storage tank and the driving air storage tank maintain a certain pressure, the normal operation of the parking brake actuator and the driving brake actuator can be guaranteed. If the brake pressure is insufficient or the brake pressure leaks, the vehicle will have a slow brake response, a decrease in braking efficiency or even a dangerous situation of brake failure, which will have a great impact on driving safety. [0003] Such as figure 1 As shown, the gas in the parking air storage tank and the driving air storage tank of the vehicle comes from the air compressor, and the charging between the parking air storage tank and the driving air storage tank is switched...

AI Technical Summary

Problems solved by technology

[0005] 1) When the air compressor is working, it inflates the parking air storage tank and the driving air storage tank at the same time. During continuous braking and under different working environments, such as continuous braking on downhill or ice and snow roads, the supply of the air compressor If you can’t keep up with the consumption of the driving air storage tank, there may be insufficient air pressure in the driving brake air storage tank, and the braking performance will decrease.

[0006] 2) The vehicle only judges the air pressure state of the brake system by testing the air pressure of the air tank, and there is a certain lag

For example, the leakage at the output pipeline of the air compressor will make the air storage tank unable to inflate and leak air. When the air pressure of the air storage tank leaks to a certain range, the brake will fail; At this time, the air compressor continues to inflate, and the pressure of the driving air storage tank drops slowly, but at this time there is no braking effect, which affects driving safety

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