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이헌균(Heonkyun Lee),이준용(Junyong Lee),허형석(Hyungseok Heo),황병성(Byeongseong Hwang),이재문(Jaemoon Lee),김홍기(Hongki Kim) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
Recently, the electric driven auxiliary vacuum pump is becoming widely used to assist braking performance of vehicle. In this paper, the performance of the vane type vacuum pump is analyzed by computational fluid dynamic method. The characteristic of the flow rate and pulsation of discharge pressure is predicted on the vacuum pump including an vane, rotor and cam ring. Also, the influence on the performance of the various design factors of discharge port has been investigated such as position size and number of hall.
베인형 바이너리 브레이크 진공 펌프에 관한 해석적 연구
이준용(Junyong Lee),이헌균(Heonkyun Lee),허형석(Hyungseok Heo),황병성(Byeongseong Hwang),이재문(Jaemoon Lee),김홍기(Hongki Kim) 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
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.