Brake pressure control module of steering axle and control method thereof

Abstract

The invention relates to a brake pressure control module of a steering axle and a control method thereof. The brake pressure control module of the steering axle comprises a brake valve body, a brake valve air inlet, a brake valve control port, a brake valve output port, a pressure regulating assembly, an air inlet and outlet assembly, a pressure regulating valve, a redundancy regulating valve and a brake valve control unit, wherein the air inlet and outlet assembly communicates with the brake valve air inlet and is used for controlling on-off of the pressure regulating valve, the pressure regulating valve is provided with a pressure regulating air inlet and outlet, the pressure regulating air inlet and outlet communicates with the brake valve air inlet, and the pressure regulating valve can communicate with the outside atmosphere; the pair of pressure adjusting assemblies is used for adjusting the pressure of the pair of brake chambers one by one; the redundancy adjusting valve is used for acting when the air inlet and outlet assembly fails. According to the brake pressure control module and method for the steering axle, safety and reliability of a vehicle can be improved, manufacturing cost is reduced, and the system integration degree is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a brake pressure control module and a control method of a steering axle. Background technique [0002] In the pneumatic braking system of commercial vehicles, both the steering wheel and the driving wheel will provide the braking force for the whole vehicle when the driver applies the brakes. It also needs to have steering ability to prevent the steering wheel from locking up during emergency braking and causing the vehicle to skid and roll over. [0003] In the existing pneumatic braking system, the steering axle generally adopts a combination of a relay valve and an ABS pressure regulator. The output pressure of the main brake valve adjusts the output pressure of the relay valve to realize the adjustment of the pressure of the brake air chamber. When the vehicle brakes in an emergency, the driver depresses the brake pedal with all his strength, the relay valve is fully op...

AI Technical Summary

Problems solved by technology

[0004] 1. When the relay valve fails, the service brake cannot be implemented, which will have an adverse effect on driving safety;

[0005] 2. Parts are scattered, there is one relay valve and two ABS pressure regulators in the steering axle, and multiple pipe joints are required to connect each component, which reduces the reliability of the system and increases the manufacturing cost, which is not conducive to the system Integrated development

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