| 제목 |
전기점화 기관의 시동 시 미연탄화수소의 배출 특성 연구 |
| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
김성수(신라대학교) |
| Key Words |
HC emission(탄화수소 배출), Cold start(냉시동), Coolant temperature(냉각수 온도), SI engine(전기점화 기관), Intake phasing(흡기기관) |
| 초록 |
Engine-out HC emissions were investigated during cold and hot start. The tests were conducted according to engine cooling temperatures which were controlled by simulated coolant temperatures of cold and hot start, on a I.5L. 4-cylinder, 16 valve, multipoint-port-fuel-injection gasoline engine. Real time engine-out HC emissions were measured at a exhaust port and cylinder head using Fast Response Flame Ionization Detector(FRFID). Unburned hydrocarbons emitted at the cold coolant temperature were much higher than those of the hot coolant temperatures. And the main source of the high HC emission was confirmed as misfire at cold coolant temperature. In addition, the effect of intake valve timing on engine-out HC emissions was investigated. The results obtained indicate that optimized intake phasing provides the potential for start-up engine-out HC emissions reduction.{{br}}{{br}} |
| 원문(PDF) |
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