19권 4호 72-77 2011 [한국자동차공학회 논문집 ]
| 제목 | 저온 디젤 연소에서 T90 온도가 배기가스에 미치는 영향 |
|---|---|
| 분야 | 엔진 및 연소 |
| 언어 | Korean |
| 저자 | 한만배(계명대학교) |
| Key Words | Low-temperature diesel combustion(저온 디젤 연소), 90% Distillation recovery temperature(90% 증발온도), Cetane number(세탄가), Start of injection timing(연료분사시기), Ignition delay(착화지연), Exhaust gas recirculation(배기가스 |
| 초록 |
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°C and 340°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. |
| 원문(PDF) | 다운로드 |