한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제21권3호
  • /
  • Pages.43-49
  • /
  • 2013
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  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
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파일럿 분사시기에 따른 DME 부분 예혼합 압축착화 엔진의 연소 및 배기특성에 관한 연구

An Investigation about Combustion and Emission Characteristics for Pilot Injection Timing on Partially Premixed Charge Combustion Ignition Engine Fueled with DME

  • 정재훈 (울산대학교 대학원 기계자동차공학과) ;
  • 임옥택 (울산대학교 기계자동차공학부) ;
  • 표영덕 (한국에너지기술연구원 에너지효율센터) ;
  • 이영재 (한국에너지기술연구원 에너지효율센터)
  • Jeong, Jaehoon (Graduate of Mechanical and Automotive Engineering, Ulsan University) ;
  • Lim, Ocktaeck (Department of Mechanical and Automotive Engineering, Ulsan University) ;
  • Pyo, Youngduck (Energy Efficiency Department, Korea Institute of Energy Research) ;
  • Lee, Youngjae (Energy Efficiency Department, Korea Institute of Energy Research)
  • 투고 : 2012.04.18
  • 심사 : 2012.09.16
  • 발행 : 2013.05.01
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초록

This work investigated the effects of engine speed and injection timing on combustion and emissions characteristics in a partially premixed charge compression ignition (pPCCI) engine fueled with DME. pPCCI engine especially has potential to achieve more homogeneous mixture in the cylinder, which results in lower NOx and smoke emission. In this study single cylinder engine was equipped with common rail and injection pressure is 700 bar. Total injected fuel mass is 64.5 $mm^3$ per cycle. The amount of pilot injection of the entire injection 12.5% is tested. Results show that NOx emission is decreased while IMEP is increased as the retard of injection timing. Besides, NOx emissions are slightly rised as well as IMEP is increased with the increase of engine speed.

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참고문헌

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