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자료유형
학술대회자료
저자정보
장진영 (두산인프라코어) 심의준 (두산인프라코어) 김득상 (두산인프라코어) 이동인 (두산인프라코어)
저널정보
한국자동차공학회 한국자동차공학회 추계학술대회 및 전시회 2010년 한국자동차공학회 학술대회 및 전시회
발행연도
2010.11
수록면
369 - 375 (7page)

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초록· 키워드

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In this study, the feasibility study of low-temperature combustion using high-pressure exhaust gas recirculation (HP EGR) without modification was evaluated in heavy-duty diesel engine. Test engine has six cylinders was equipped with HP-EGR, variable turbine geometry (VTG) and high-pressure common rail injection system.
1400 and 1800 rpm with 20% and 40% of maximum injection quantity were selected as a test condition due to maximum torque and rated power engine speed respectively. At the same time, EGR valve duty, VTG duty and injection timing were varied to examine the effect of those parameters on engine performance. Especially, EGR valve duty was set over 50% to supply enough EGR. To find the advantage of LTC with HP-EGR, results were compared with those from ECU based operation. EGR rate was increased under higher duty of EGR valve operation. Nitrogen oxide and smoke emissions, which were chronic problem of diesel engine, were reduced by early and higher EGR rate. And also, hydrocarbon and carbon monoxide emissions were decreased a little at some cases. Increasing hydrocarbon and carbon monoxide emissions were considered as side effect of low temperature combustion in diesel engine due to lower combustion temperature.
However, in this study, EGR rate was not reached over 60%, which was known as EGR rate for low temperature combustion, with present HP EGR system. Therefore, test engine needs to modify EGR system or install the additional system for increasing EGR rate such as LP EGR system.

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Abstract
1. 서론
2. 실험 장치 및 실험 방법
3. 실험 결과
4. 결론
References

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UCI(KEPA) : I410-ECN-0101-2013-556-001769313