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A Study on Effect of Intake Charging Conditions upon NO Emissions in a DI Diesel Engine Using Engine Cycle Simulation  

함윤영 (우석대학교 자동차공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.26, no.6, 2002 , pp. 679-687 More about this Journal
Abstract
In this study, a cycle simulation using a two-zone model is carried out to investigate the effect of intake charging conditions such as oxygen concentration, temperature and pressure on NO emissions in a DI diesel engine. The model is validated against measurements in terms of cylinder pressure, torque, BSFC and NOx emissions with 2902 cc DI diesel engine. Calculated results can be summarized as follows. The oxygen concentration in the intake charge is decreased with increasing of EGR rate and equivalence ratio. As the intake oxygen concentration is reduced, the combustion pressure and the burned gas temperature decrease and, as a result, NO formation decreases. Also, the results show that as the intake pressure increases and the intake temperature decreases, NO emissions are effectively reduced.
Keywords
DI Diesel Engine; EGR; NOx; Cycle Simulation; Oxygen Concentration;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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[ H. Tsunemoto ] / SAE 800030
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