한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제18권4호
  • /
  • Pages.140-146
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  • 2010
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  • 1225-6382(pISSN)
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  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

디젤엔진에서 디젤, GTL, 바이오디젤의 혼합유의 배기배출물 특성에 관한 실험적 연구

Experimental Study on the Emission Characteristics of Diesel, GTL, and their Blends with Biodiesel in a Diesel Engine

  • 투고 : 2009.11.20
  • 심사 : 2009.12.21
  • 발행 : 2010.07.01
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초록

An experimental study was carried out to investigate the emission characteristics for various alternative fuels in a 2.0 liter 4-cylinder turbo-charged diesel engine. The conventional diesel fuel, neat GTL (Gas to Liquid), blends of diesel and biodiesel(BD20), and blends of GTL and biodiesel(G+BD20 and G+BD40) were applied, and their emission characteristics were compared at various steady-state engine operating conditions. A noticeable reduction of exhaust emissions compared to conventional diesel fuel, except for NOx emission, was observed for G+BD40, where there is a maximum 30% averaged reduction for gaseous emissions (THC and CO) and 70% for PM mass concentrations. When comparing PM size distributions for biodiesel blended fuels, the PM number concentration in accumulation mode, where the diameter of PM is greater than 50 nm, decreased due to additional oxygen content in the biodiesel fuel; in nucleation mode, where the diameter of PM is less than 50nm, there was a slight increase or decrease in the PM number concentration depending on the amount of oxygen available in the combustion chamber.

키워드

참고문헌

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