Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A Study on Effect of Intake Charging Conditions upon NO Emissions in a DI Diesel Engine Using Engine Cycle Simulation

엔진 사이클 시뮬레이션에 의한 직분식 디젤기관의 NO 배출물에 미치는 흡기충전 조건의 영향에 관한 연구

  • 함윤영 (우석대학교 자동차공학과)
  • Published : 2002.11.01
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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

References

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