한국연소학회:학술대회논문집
- 대한연소학회 2003년도 제27회 KOSCO SYMPOSIUM 논문집
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- Pages.257-262
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- 2003
가솔린기관의 시동시 연료분사기법에 의한 HC 배출저감 연구
A Study on the Reduction of HC Emissions by Fuel Injection Methods during the SI Engine Start
초록
Engine-out HC emissions were investigated during engine start. The tests were conducted on a 1.5L, 4-cylinder, 16 valve, multipoint-port-fuel-injection gasoline engine at different coolant temperatures and fuel injection-skip methods; no skip, 1 cycle-skip and 3 cycle-skip. To understand the characteristics of engine-out HC emissions, HC concentration was measured at a exhaust port using a Fast Response Flame Ionization Detector (FRFID). The result show that HC emissions were emitted at the cold coolant temperature much higher than those of the hot coolant. In additions, the fuel injection skip highly reduced engine-out HC emissions. It is convinced that optimized fuel injection skips according to coolant temperatures could be applied to reduce HC emissions during SI engine start.