Journal of Hydrogen and New Energy (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Comparative Study on the Performance of High Pressure Fuel Pumps for Compression Ignition Engines Fueled by DME

DME를 연료로 하는 압축 착화 엔진용 고압연료 펌프의 성능 비교 연구

  • JAEHEE JEONG (Department of Mechanical Engineering, University of Ulsan Graduate School) ;
  • WONJUN CHO (Bio Friends Inc.) ;
  • OCKTAECK LIM (Department of Mechanical Engineering, University of Ulsan)
  • 정재희 (울산대학교 일반대학원 기계공학과) ;
  • 조원준 ((주)바이오프랜즈) ;
  • 임옥택 (울산대학교 기계공학부)
  • Received : 2023.01.25
  • Accepted : 2023.02.10
  • Published : 2023.02.28
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Abstract

In this study, the performance of high-pressure fuel pumps was compared to find a high-pressure pump suitable for dimethyl ether (DME) fuel, and to establish a database of basic data on flow rates. The use of DME in compression ignition engines can reduce pollutant emissions. The cetane value of DME is higher than that of diesel fuel. The physical properties of DME are similar to liquefied gasoline gas (LPG), and when pressurized at a pressure of 6 bar or more, it changes from gas to liquid. Two types of high pressure pumps used in this study were independent injection type pump and a wobble plate type pump. Two high-pressure pumps with different injection types were compared. By measuring and comparing the performance changes of the two high-pressure pumps, a pump suitable for DME was selected and performance improvement measures were proposed. The changed experimental conditions to measure the performance change of the high pressure pump were increased in the units of 100 to 1,000 rpm and 100 rpm, and the experiment was performed at common rail pressures 300 and 400 bar. it was confirmed that the DME inside the fuel supply system remained in a liquid state through temperature sensors, pressure sensors, and pressure gauges. As a result of the experiment, it was confirmed that the flow rate discharged from the high-pressure fuel pump increased as the motor rotational speed increased, and the flow rate of the high-pressure fuel pump

Keywords

Acknowledgement

본 과제(결과물)는 2021년도 교육부의 재원으로 한국연구재단의 지원을 받아 수행된 지자체-대학 협력기반 지역혁신 사업의 결과임(2021RIS-003). 본 결과물은 농림축산식품부 및 과학기술정보통신부, 농촌진흥청의 재원으로 농림식품기술기획평가원과 재단법인 스마트팜연구개발사업단의 스마트팜 다부처패키지혁신기술개발사업의 지원을 받아 연구되었음(421038-03). 이 논문은 산업통상자원부가 지원한 '혁신도시 공공기관연계 육성사업'으로 지원을 받아 수행된 연구결과임(과제명: 전지·ESS기반 에너지산업 혁신생태계 구축사업).

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