Design and research on hydraulic control unit for a novel integrated-electro-hydraulic braking system

摘要

Due to the decline of vacuum degree, the braking system of hybrid and electric vehicle shall not use vacuum booster any longer from the economics or logical point of view. This paper puts forward the design requirements of integrated-electro-hydraulic brake system (I-EHB) and the designing scheme of a novel I-EHB based on these design requirements. Hydraulic control unit (HCU), which consists of 6 high speed on-off solenoid valves, is an important part of I-EHB. HCU can be used to control the hydraulic pressure of wheel cylinders. Then we set up a simulation model and test the design with it. The results shows a high performance of the system and the hydraulic pressure of wheel cylinders are under precise control.