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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
한국자동차공학회 한국자동차공학회논문집 한국자동차공학회논문집 제14권 제2호
발행연도
2006.3
수록면
114 - 120 (7page)

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초록· 키워드

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The basic effects of hydrogen addition for engine performance and emission were investigated in single cylinder research engine. Seven commercial injectors were tested to choose a suitable injector for hydrogen injection prior to its engine implementation. The hydrogen fuel leakage and flow rate were evaluated for each injector and KN3-1(Keihin, CO.) showed the best performance for hydrogen fuel. At the higher excess air ratio(λ=1.7, 2.0), the better combustion stability was found with hydrogen addition even though its effect was small at lower excess air ratio (λ=1.0, 1.3). Stable operation of the engine was even guaranteed at λ=2.0, if the amount of hydrogen gas was near 15% of total energy. In the lean region, λ>1.3, thermal efficiency was improved slightly while it was not clearly observed at λ=1.0, 1.3. It is considered that, in some cases, high temperature environment due to hydrogen combustion caused further heat loss to surroundings. Except for λ=1.0, with larger amount of hydrogen addition, CO was reduced drastically but it was emitted more at the leaner region. Nitric oxides(NOx) was increased a little more with hydrogen addition at λ=1.0, 1.3. However, at λ>1.3 its relative amount of emission was low. In addition, the amount of NOx was continuously decreased with hydrogen addition, but, at λ=2.0 the amount of NOx was lowered to 1/100 of that of λ =1.0. THC emission was significantly increased as air/fuel ratio was raised to leaner region due to misfire and partial burn.

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Abstract
1. 서론
2. 실험장치
3. 실험방법
4. 실험결과
5. 결론
References

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