한국분무공학회지 (Journal of ILASS-Korea)

  • 제22권4호
  • /
  • Pages.190-196
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  • 2017
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  • 1226-2277(pISSN)
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  • 2288-9051(eISSN)
한국분무공학회 (Institute for Liquid Atomization and Spray Systems-Korea)
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The Experimental Study on the Low-temperature Combustion Characteristics of DME Fuel in a Compression Ignition Engine

  • 투고 : 2017.11.13
  • 심사 : 2017.12.19
  • 발행 : 2017.12.30
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초록

The aim of this work is to investigate the combustion and exhaust emission characteristics of low-temperature combustion (LTC) at various EGR test conditions using a single cylinder common-rail diesel engine. In high EGR rate combustion mode with DME fuel, 30% (${\Phi}=0.61$) and 50% (${\Phi}=0.86$) of EGR were respectively examined, and then the combustion, exhaust emissions, nano-particle characteristics of each cases were measured. From these results, it revealed that The ignition delay and combustion duration are prolonged as the increase of EGR rate. In addition, at an advanced injection timing (BTDC $30^{\circ}$), ignition delays were fairly increased because the dilution effect of EGR and also low charge in-cylinder temperature created a lean mixture, thus decreased the peak release rate.

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참고문헌

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