Distributed hydraulic-pneumatic braking system of heavy transport vehicle and control method

Abstract

The invention discloses a distributed hydraulic-pneumatic brake system of a heavy transport vehicle and a control method, the system comprises a brake control system, a hydraulic brake system and a pneumatic brake system, the hydraulic brake system is arranged on a tractor, and the pneumatic brake system is arranged on a trailer; the control method comprises the steps that the vehicle executes a conventional braking mode, a rapid braking mode and an emergency braking mode according to the change speed of braking pedal force at the beginning of braking, the advance of the pneumatic braking system is flexibly designed according to the braking modes, and pressure adjustment is achieved in an electric control mode; and a drum brake with a good braking effect is used in the hydraulic braking system. The air pressure braking system uses a disc brake with better heat dissipation performance, the whole vehicle uses two braking systems, and the characteristics of high sensitivity of a hydraulicbraking system and high braking force of a pneumatic braking system are brought into play; and compared with a traditional braking system, the distributed hydraulic-pneumatic brake system is advantageous in that the response speed of the system is higher, and the braking efficiency, braking stability, safety and comfort of the heavy transport vehicle are improved.

Description

technical field [0001] The invention relates to a distributed hydraulic-pneumatic braking system and a control method of a heavy-duty transport vehicle, belonging to the technical field of vehicle braking. Background technique [0002] Heavy-duty transport vehicles are an important part of my country's road transport. Reports on heavy-duty transport vehicle safety accidents have always been common, especially in remote mountainous areas in my country. Complex road conditions often lead to safety accidents of heavy-duty transport vehicles. The country and the people have caused huge losses, and for special transport vehicles such as the military field, the occurrence of safety accidents may not only cause personal and property losses, but may also leak state secrets. Therefore, the safety of heavy-duty transport vehicles needs to be improved urgently. Among the many factors that affect the driving safety of heavy-duty transport vehicles, braking performance is the most importa...

AI Technical Summary

Problems solved by technology

This invention is mainly aimed at small four-wheeled cars, with two sets of braking systems, but the space of small cars is limited, the adaptability is not strong, and the working method and layout of the brakes are not specifically described in the scheme, and a relatively traditional braking system is adopted at the same time. Brake comfort and safety are poor

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