베인형 바이너리 브레이크 진공 펌프에 관한 해석적 연구

Vane type binary vacuum pump is the equipment that make vacuum in the brake booster using the negative pressure caused by the rotation of the rotor for decelerating or stopping the vehicle. Mechanical vacuum pump in diesel engine, the negative pressure of engine intake manifold in the gasoline engine is used as the primary vacuum source. Recently, according to the introducing engine downsizing and turbo charger technology for improving fuel efficiency, electric vacuum pump is used as additional vacuum source. In this study, the effect on flow rate and outlet pressure with respect to the design parameter such as clearance, vane angle and outlet position has been examined using CFD analysis.