Journal of Institute of Convergence Technology (융복합기술연구소 논문집)

Institute of Convergence Technology (한국교통대학교 융복합기술연구소)
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Research and Development of a Light-Duty DME Truck Using Common Rail Fuel Injection Systems

커먼레일 연료분사 시스템을 장착한 경량 DME 트럭의 연구 및 개발

  • Jeong, Soo-Jin (Powertrain System R&D Center, korea Automotive Technology Institute) ;
  • Chon, Mun Soo (Department Energy System Engineering, Korea National University of Transportation) ;
  • Park, Jung-Kwon (Powertrain System R&D Center, korea Automotive Technology Institute)
  • 정수진 (자동차부품연구원 동력시스템연구센터) ;
  • 전문수 (한국교통대학교 에너지시스템공학과) ;
  • 박정권 (자동차부품연구원 동력시스템연구센터)
  • Received : 2012.04.02
  • Accepted : 2012.04.30
  • Published : 2012.05.31
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Abstract

In this study, the trucks(2.9-liter) have been developed to use DME as fuel, and performance test of the vehicle's DME engine, power, emissions, fuel economy and vehicle aspects was conducted. For experiments, the fuel system(common-rail injectors and high-pressure pump included) and the engine control logic was developed, and ECU mapping was performed. As a result, the rail pressure from 40MPa to approximately 65% increase compared to the base injector has been confirmed that. Also, the pump discharge flow is 15.5 kg/h when the fuel rail pressure is 400rpm(40 MPa), and the pump discharge flow is 92.1 kg/h when the fuel rail pressure is 2,000rpm(40MPa). The maximum value of full-load torque capability is 25.5kgfm(based on 2,000rpm), and more than 90% compared to the level of the diesel engine were obtained. The DME vehicle was developed in this study, 120 km/h can drive to the stable, and calculated in accordance with the carbon-balance method of fuel consumptions is 5.7 km/L.

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