Commercial vehicle ESC system based on AEBS relay valve

Abstract

A commercial vehicle ESC system based on an AEBS relay valve comprises an electric control unit, a brake master valve, a front axle AEBS relay valve electrically connected with the electric control unit, a rear axle AEBS relay valve, a pressure sensor, a steering angle sensor, a yaw rate sensor, ABS electromagnetic valves, a wheel speed sensor and a gear ring. A right front brake air chamber and aleft front brake air chamber are respectively connected with the front axle AEBS relay valve by pipelines through the ABS electromagnetic valves; a right rear brake air chamber and a left rear brakeair chamber are respectively connected with the rear axle AEBS relay valve by pipelines through the ABS electromagnetic valves, the front axle AEBS relay valve is connected to a brake main valve through a pipeline, the rear axle AEBS relay valve is connected to a pressure sensor through a pipeline, and the pressure sensor is connected to the brake main valve through a pipeline. The system adopts the AEBS relay valve to control the brake pressure of the wheel, has the functions of active boosting, pressure maintaining and pressure reducing, can directly realize the brake pressure control of thewheel, does not need the ABS valve to work at the same time during pressure maintaining, is beneficial to prolonging the service life of the ABS valve, and improves the reliability of the system.

Description

technical field [0001] The invention relates to the technical field of automobile braking, in particular to a commercial vehicle ESC system based on an AEBS relay valve. Background technique [0002] With the rapid development of the automobile industry and the continuous construction of expressways, countries all over the world attach great importance to the driving safety of automobiles, especially the requirements for the technical performance of automobile braking systems are getting higher and higher, and automobile safety is becoming more and more popular. attach importance to. Automobile braking system is an important part of ensuring vehicle safety, and its technical innovation has an extremely important impact on improving vehicle safety. With the continuous advancement of electronic control and integrated control, vehicle safety systems have also received new developments. The traditional mechanical system can no longer meet the safety requirements of modern auto...

AI Technical Summary

Problems solved by technology

[0005] However, since the ASR valve can only increase or decrease the pressure and cannot maintain the pressure, it is impossible to perform stable control of the fixed pressure. If the specific braking pressure of the four wheels is to be maintained, the ASR valve and the ABS valve need to work at the same time. The valve should be in a state of constant pressure increase, and the ABS valve can also adjust the pressure at the same time

As a result, the ABS valve needs to be in working condition for a long time, which will reduce the service life of the ABS valve and reduce the reliability of the system

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