자동차용 LPG 연료펌프의 윤활성 개선에 관한 연구

• Published in: 한국분무공학회지 Vol. 16; no. 1; pp. 1 - 6
• Main Authors: 김창업, Chang Up Kim, 최교남, Kyo Nam Choi, 강건용, Kern Yong Kang, 박철웅, Cheol Woong Park
• Format: Journal Article
• Language: Korean
• Published: 한국분무공학회 31.03.2011; 한국액체미립화학회
• Subjects: External type; Fuel pump; Liquid phase LPG injection; LPG 액상분사; Lubrication; Roller-vane type; 기계공학; 롤러-베인형; 연료펌프; 외장형; 윤활; -; LPG
• ISSN: 1226-2277; 2288-9051

In recent years, the need for more fuel-efficient and lower-emission vehicles has driven the technical development of alternative fuels such as LPG (Liquefied Petroleum Gas) which is able to meet the limits of better emission levels without many modifications to current engine design. LPG has a high vapor pressure and lower viscosity and surface tension than diesel and gasoline fuels. These different fuel characteristics make it difficult to directly apply the conventional gasoline or diesel fuel pump. Self acting lubricated groove design or coating can be used in high-speed and high precision spindle system like a roller-vane type fuel pump, because of its advantages such as low frictional loss, low heat generation, averaging effect leading better running accuracy and simplicity in manufacturing. Those design method can also affect the atomization of fuel from the injector and the formation of fuel film on the intake manifold. In this study, experiments are carried out to get performance characteristics of initial and steady state operation. The characteristics of vane type fuel pump were investigated to access the applicability on LPLi engine.