Exhaust gear applied to automotive hydraulic braking system and control method

Abstract

The invention discloses an exhaust gear applied to an automotive hydraulic braking system and a control method, and aims to overcome the problems that the structure is complex, the cost is high, and pipeline detection and the exhaust of a secondary loop in a hydraulic braking system of a vehicle with an ABS (anti-lock braking system) and an ESP (electronic stability program) during the exhaust process of the braking system cannot be completed in the prior art. The exhaust gear applied to the automotive hydraulic braking system comprises a braking control mechanism, a hydraulic regulating unit, exhaust filling equipment, a braking actuator and an exhaust control unit ECU, wherein the exhaust filling equipment comprises a four-position two-way electromagnetic valve, a filling gun, a vacuum pump, a pressure-limiting valve, an oil pump, an air pressure tank and an air compressor; the p port of the filling gun is in tube connection with the a port of the four-position two-way electromagnetic valve; the p port of the four-position two-way electromagnetic valve is in tube connection with the a port of the vacuum pump, the p port of the oil pump and the p port of the air pressure tank; the p port of the pressure-limiting valve is in tube connection with the p port of the oil pump; the a port of the air pressure tank is in tube connection with the p port of the air compressor. The invention also provides the control method adopting the exhaust gear applied to the automotive hydraulic braking system.

Description

technical field [0001] The invention relates to an exhaust gas filling device in the field of automobile braking systems, more precisely, the invention relates to an exhaust gas filling device and a control method applied to automobile hydraulic braking systems. Background technique [0002] Most of the vehicle braking systems are now hydraulic braking systems, which transmit the pressure of the driver stepping on the brake pedal through the brake fluid to achieve vehicle braking. In order to realize the transmission of brake pressure, the vehicle's hydraulic brake system is a completely closed system filled with brake fluid. Therefore, if there is gas inside the vehicle braking system, it will seriously affect the braking performance of the vehicle. At present, if there is gas in the vehicle braking system, the maintenance method is to manually depress the brake pedal and exhaust the gas through the brake bleed bolt. This method requires the cooperation of at least two peo...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the complex structure, high cost and dependence on foreign countries in the prior art, and the inability to complete the pipeline detection in the exhaust process of the brake system and the hydraulic braking of vehicles with ABS and ESP. The problem of exhaust in the secondary circuit of the system provides an exhaust device and control method applied to automobile hydraulic brake systems

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