Performance test method of hydraulic control unit of car brake system

Abstract

The invention relates to a performance test method of a hydraulic control unit of a car brake system. The performance test method includes the following steps that a performance test system of the hydraulic control unit of the car brake system is arranged, the performance test system comprises a pressure boosting device, a hydraulic pipeline system, a control measurement device and an environment simulation device, the pressure boosting device comprises an oil tank, a variable pump, a pressure-stabilization energy accumulator, a servo proportional valve, a first pneumatic ball valve and a second pneumatic ball valve, the hydraulic pipeline system comprises a first simulation main cylinder, a second simulation main cylinder, a first oil can, a second oil can, pneumatic ball valves from the third one to the twelfth one, the hydraulic control unit, hydraulic steel cylinders from the first one to the fourth one and an exhaust constant displacement pump, and the control measurement device comprises an industrial personal computer and a sensor. The flow and active pressure boosting performance of a plunger pump in the hydraulic control unit under different back pressure, pressure and temperature are tested. The sealing performance and response time of an electromagnetic valve in the hydraulic control unit are tested. The volume of an energy accumulator in the hydraulic control unit is tested.

Description

technical field [0001] The invention relates to a performance testing method of components in an automobile braking system, in particular to a performance testing method of a hydraulic control unit in the automobile braking system. Background technique [0002] At present, passenger cars are generally equipped with hydraulic braking systems, especially in vehicles equipped with electronic stability control (ESC) and anti-lock braking system (ABS), the hydraulic control unit (HCU) is the most important part of the braking system. The main function executor. The hydraulic control unit is assembled by connecting high-speed switching solenoid valve, plunger pump and accumulator. Among them, the response performance of the high-speed switching solenoid valve, the boosting capacity of the plunger pump, the volume of the accumulator, etc., will all affect the performance of the hydraulic control unit. Therefore, it is necessary to conduct a comprehensive test on the performance o...

AI Technical Summary

Problems solved by technology

[0003] At present, the hydraulic control unit is mainly tested in the production line. The detection content is single, the detection method is rough, and it cannot reflect the overall performance of the hydraulic control unit well. Some test methods will also cause irreversible damage to the hydraulic control unit.

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