Hydraulic control unit performance test station for stability control system in vehicle dynamics

Abstract

The invention relates to a hydraulic control unit performance test station for a stability control system in vehicle dynamics and belongs to the technical field of automobile manufacturing. The test station comprises a flat workbench, an HCU fast limiting and oil circuit sealing platform which is arranged on the workbench, a controller, a sealing feeding differential hydraulic cylinder, a hydraulic test system, a vehicle braking system, and a pressure source; the controller is respectively connencted with the HCU fast limiting and oil circuit sealing platform, the differential hydraulic cylinder and the hydraulic test system by a circuit; the differential hydraulic cylinder contacts the HCU fast limiting and oil circuit sealing platform; the hydraulic test system is connencted with the HCU fast limiting and oil circuit sealing platform by a test oil circuit; the vehicle braking system is connencted with the HCU fast limiting and oil circuit sealing platform by a braking fluid interface pipeline; and the hydraulic test system and the oil circuit sealing differential hydraulic cylinder are connencted with the pressure source by a hydraulic pipeline. The invention meets the delivery inspection needs of HCU, has easy and quick operation, and achieves low cost.

Description

technical field [0001] The invention belongs to the technical field of automobile manufacturing, and in particular relates to the factory test of hydraulic characteristics of a hydraulic control unit (HCU) of an automobile dynamic stability control system (abbreviated as DSC). Background technique [0002] With the development of the automobile industry, the requirements for the active safety of automobile driving are getting higher and higher. Therefore, a vehicle dynamics stability control system (vehicle dynamics stability control, abbreviated as DSC) has appeared, and companies such as Bosch in Germany call it an electronic stability program (abbreviated as ESP). DSC is developed on the basis of automobile anti-lock braking system (ABS) and driving anti-skid system (ASR), combined with yaw moment control (AYC). The executive mechanism of the DSC system is a highly integrated hydraulic control unit (HCU). Through the HCU, various control functions of the DSC can be reali...

AI Technical Summary

Problems solved by technology

At present, the products for testing the hydraulic characteristics of the automobile braking system include the Schenck test bench, etc., which can test the hydraulic pressure-braking torque characteristics of the entire automobile braking system, the thermal decay characteristics of the brake, etc., and can be used for performance testing of the automobile braking system. ; but because the equipment is bulky and expensive, and the test bench cannot set the increase and decrease rate according to the needs, it is difficult to be used for detection on the HCU production line

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