• 제목/요약/키워드: 액화석유액상분사

검색결과 14건 처리시간 0.015초

FTP75 모드에 의한 LPG액상분사자동차의 배출가스 및 나노입자배출특성 (Analysis of Nano-particle and Emissions Characteristics for FTP75 Mode in LPLi Vehicle)

  • 이호길;김용태
    • 한국수소및신에너지학회논문집
    • /
    • 제20권2호
    • /
    • pp.161-167
    • /
    • 2009
  • The regulation of the $CO_2$ emit from vehicles have become much more stringent in recent years. This stringent regulation is more request vehicle manufacturers to develop the alternative fuel vehicles for reducing exhaust emissions. LPG fuel is more clean energy compares with gasoline and diesel fuel. Especially, $CO_2$ emission of LPG Vehicle is less than gasoline vehicle and almost equal to diesel vehicle. For this reason, recently korean government is extending LPG fuel for hybrid car and light duty vehicle. In domestic, Propane is mixing $15{\sim}30%$ to butane for improvement of cold start at winter season. Therefore, In this paper was investigated that the characteristics of emissions according to propane mixing rate with 0, 10, 20, 30% were compared and analyzed by the vehicle test using LPG vehicle according to the FTP75 mode. It was also investigated the characteristics of nano-particle emit with propane mixing rate.

터빈방식 연료펌프로 구성된 LPi 연료공급 시스템의 LPG 조성비에 따른 토출성능 및 엔진적용성에 관한 연구 (The Study of Flow Rate Performance and Engine Application with LPG Composition Rate for LPi Fuel Supplying System Consisted of Turbine Type Pump)

  • 임무창;명차리;박심수;박정남;김성근
    • 한국자동차공학회논문집
    • /
    • 제15권3호
    • /
    • pp.99-105
    • /
    • 2007
  • Currently, BLDC fuel pump was applied on LPi vehicle using 3rd fuel supply system as liquified phase LPG injection method had already shown better performance than others. Its cost, however, is rather expensive because of drawbacks such as complicated structure, a fault of localization of system. In this work, demonstration system for a developed turbine type fuel pump to replace BLDC system was setup and investigated. This study results that fuel mass flow rate of turbine type pump and injection performance of injector were better compared to BLDC type. Comparing flow rate of summer LPG with that of winter LPG, the flow rate decreased about 25% using winter LPG. Performance applying turbine type LPi fuel pump to engine is confirmed.

외장형 연료펌프를 사용한 LPLi시스템에서 연료의 상태량 변화 예측 (Prediction of Fuel Properties on LPLi System with an External Fuel Pump)

  • 김재형;윤여빈;박영준;송춘섭;이성욱;조용석
    • 한국분무공학회지
    • /
    • 제15권1호
    • /
    • pp.38-43
    • /
    • 2010
  • The LPG(Liquefied Petroleum Gas) fuel attracts attention as a clean alternative fuel. In order to further reduce the exhaust emission and improve performance in LPG engines, the LPLi(Liquid Phase LPG Injection) system is used. In LPLi system, the fuel pump performance is important for keeping the LPG over it's saturated vapor pressure. An external fuel pump is needed to improve the durability for LPG engines. This paper predicted the variation of fuel properties on the LPLi system with an external fuel pump. From each component's thermodynamic model, an 1-D simulation is developed for LPLi system with an external fuel pump. Then the 1-D simulation data analyzed and compared with the rig-test. The 1-D simulation and the rig-test produced similar results.

엔진 착화 라인의 생산성 향상을 위한 LPI 엔진 가솔린 연료 적용성에 대한 실험적 연구 (Experimental Study on Firing Test of LPI Engine Using Gasoline Fuel for Improving the Production Process at End of line)

  • 황인구;최성원;명차리;박심수;이종수
    • 한국자동차공학회논문집
    • /
    • 제15권3호
    • /
    • pp.133-140
    • /
    • 2007
  • The purpose of this study was to evaluate the effects of gasoline fuel to the LPI engine. Firing test bench was used in order to assess the effect on gasoline-injected LPI engine. Gasoline fuel was supplied into the reverse direction(3-4-2-1 cylinder) at 3.0 bar with commercial gasoline fuel pump. Engine test was performed using the firing test mode at end of line. The deviations of excess air ratio of each cylinder and maximum combustion pressure using gasoline fuel were within 0.1 and $1{\sim}2\;bar$. Engine start time was measured with changing coolant temperature at $20^{\circ}C,\;40^{\circ}C,\;80^{\circ}C$, respectively. Residual gasoline volume in the fuel line was measured about 32 cc after firing test and it was less than 2 cc within 10 seconds purging. To simulate the end of line, the residual gasoline in the fuel line was purged during 5 and 10 seconds. Start time of LPI engine with LPG fuel were 0.61 and 0.58 seconds. This work showed that severe problems such as misfiring and liner scuffing were not occurred applying gasoline fuel to LPI engine.