An Experimental Study on the Performance of Turbocharged Diesel Engine

터보과급 디이젤기관의 성능에 관한 실험적 연구

  • 채재우 (인하대학교 공과대학 기계공학과) ;
  • 정성찬 (인하대학교 공과대학 기계공학과 대학원) ;
  • 백중현 (대우중공업주식회사 중앙연구소)
  • Published : 1994.11.30

Abstract

Combustion of diesel engine depends on the mixing of air and evaporating fuel during ignition delay greatly. Variation of air-fuel mixing rate and ignition delay for engine operating condition causes difference of combustion, performance and exhaust emissions. This study is investigated in a turbocharged diesel engine of IDI swirl chamber type. In the results, As injection timing is advanced until $12.6^{\circ}$ BTC, ignition delay decreases. NOx concentration and smoke level in exhaust gas increases for advanced injection timing Ignition delay, combustion period, pressure rise rate and exhaust gas temperature are increased with increasing engine speed. And ignition delay at high load is more decreased than that at low load. Ignition delay and combustion period are decreased with increasing intake pressure. Power increases, temperature and CO, NOx concentration in exhaust gas decreases as intake pressure increases. With increasing load, ignition delay is decreased and combustion period, motoring pressure are increased.

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