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자료유형
학술저널
저자정보
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제11권 제2호
발행연도
2003.3
수록면
8 - 15 (8page)

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During cold operation, fuel injection in the intake port directly contributes to the unburned hydrocarbon formation in spark ignition engines. The relationship between injection parameters and HC emission behavior was investigated through a series of experiments. Spray behavior of port 려el injectors was characterized through a
quantitative evaluation of mass concentration of liquid 려el by a patternator and PDA(Phase-Doppler Anemometer). A
6-hole injector was found to produce finer spay than single hole injector. Using a purpose-built wall, the wetted fuel was measured, which was mostly affected by wall temperature. HC emissions were measured in a production engine varying coolant temperature(20-80℃), also with respect to the different types of injectors. In the 6-hole injector application, the engine produced less HC emission in low coolant temperature region. Though it produces much more amount of wetting fuel, it has the advantages of finer atomization quality. In high coolant temperature region, there was little effect by different types of injectors. The control schemes to reduce HC emissions during cold start could be suggested from the findings that the amount of fuel supply and HC emission could be reduced by utilizing fine spray and high intake wall temperature.

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Abstract

1.서론

2.실험장치 및 실험방법

3.실험결과 및 해석

4.결론

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