Hydraulic auxiliary driving and braking system and control method thereof

Abstract

The invention discloses a hydraulic auxiliary driving and braking system and a control method thereof. The hydraulic auxiliary driving and braking system and the control method solve the problems that the existing commercial cargo carrying vehicles are poor in trafficability on broken road surfaces and unstable in braking when the time of service braking is long. The hydraulic auxiliary driving and braking system comprises an engine, a clutch, a gearbox, a rear drive axle, two front wheels, an accelerator pedal, a brake pedal, a frame, a power takeoff, an axial oblique plate type high pressure variable pump, a three-position four-way electromagnetic reversing valve, an electro-hydraulic proportional relief valve, a heat exchanger, a relief valve group, two hydraulic quantitative motors which have the same structure, an oil tank and an electronic control unit; the axial oblique plate type high pressure variable pump is in pipe connection with the three-position four-way electromagnetic reversing valve which is in pipe connection with the relief valve group, the electro-hydraulic proportional relief valve and the oil tank; the two hydraulic quantitative motors which have the same structure are in pipe connection with the axial oblique plate type high pressure variable pump. Meanwhile, the invention provides a control method of the hydraulic auxiliary driving and braking system.

Description

technical field [0001] The present invention relates to a driving and braking device belonging to the technical field of automobile hydraulic application, and more particularly, the present invention relates to a hydraulic auxiliary driving and braking system and a control method thereof. Background technique [0002] In recent years, with the rapid development of the automobile industry in the 21st century, a major breakthrough has been made in the application of secondary adjustment hydrostatic transmission technology in traditional vehicles. This technology has gradually attracted the attention of domestic and foreign research institutions and automobile manufacturers. In China, the research on the application of hydraulic technology in automobiles is mainly concentrated in colleges and universities. The application of relevant hydraulic drive technology is mostly in energy-saving and environmentally friendly oil-hydraulic power coupling systems, including parallel and hyb...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by this invention is to overcome the problems of poor passability of commercial trucks on bad roads and unstable braking during long-term driving, and propose a set of vehicles that can be installed on the structural basis of existing vehicles. A hydraulic auxiliary driving and braking system that simultaneously improves vehicle passability and braking stability, and also provides a control method for the hydraulic auxiliary driving and braking system

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