Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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The Effect of T90 Temperature on Exhaust Emissions in Low-temperature Diesel Combustion

저온 디젤 연소에서 T90 온도가 배기가스에 미치는 영향

  • Han, Man-Bae (Department of Mechanical and Automotive Engineering, Keimyung University)
  • 한만배 (계명대학교 기계자동차공학과)
  • Received : 2010.08.09
  • Accepted : 2011.01.28
  • Published : 2011.07.01
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Abstract

This study is to investigate the effect of the distillation temperature in ultra low sulfur diesel fuel on exhaust emissions in the low-temperature diesel combustion with 1.9L common rail direct injection diesel engine. Low temperature diesel combustion was achieved by adopting an external high EGR rate with a strategic injection control. The engine was operated at 1500 rpm 2.6 bar BMEP. The 90% distillation recovery temperature (T90) was $270^{\circ}C$ and $340^{\circ}C$ for the respective cetane number (CN) 30 and 55. It was found that there exists no distinctive discrepancy on exhaust emissions with regards to the different T90s. The high CN (CN55) fuels follow the similar trend of exhaust emissions as observed in CN30 fuels' except that high T90 fuel (CN55-T340) produced higher PM compared to low T90 fuel (CN55-T270). This may come from that high T90 plays an active role in aggravating the degree of fuel-air mixture preparedness before ignition.

Keywords

References

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