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초록· 키워드

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Recently it is strongly required on lower fuel consumption. lower exhaust emission. higher engine performance, and social demands in a spark ignition gasoline engine.
In this study, the experimental engine used at test, it has been modified the lean burn gasoline engine, and used the programmable engine management system. and connected the controller circuit which is designed for the engine control. At the parametric study of the engine experiment, it has been controlled with fuel injection, ignition timing, swirl mode, equivalence ratio, engine dynamometer load and speed as the important factors governing the engine performance adaptively.
It has been found the combustion characteristics to overcome the hysteresis phenomena between normal and lean air-fuel mixing ranges. by mean of the look-up table set up the mapping values, at the optimum conditions during the engine operation.
As the result, it is found that the strength of the swirl flow with the variation of engine speed and load is effective on combustion characteristics to reduce the bandwidth of the hysteresis regions.
The results show that mass fraction burned and heat release rate pattern with crank angle are reduced much rather, and brake specific fuel consumption is also reduced simultaneously.

목차

1. 서론

2. 실험 장치 및 방법

3. EMS 제어 시스템

4. 실험 및 고찰

5. 결론

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UCI(KEPA) : I410-ECN-0101-2009-559-013797385