Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Influence of fuel injection pattern on combustion and emissions characteristics of diesel engine by using emulsified fuel applied with EGR system

에멀젼연료와 EGR의 동시적용 디젤엔진에 있어서 연료 분사 패턴이 연소와 배기가스에 미치는 영향

  • Yoo, Dong-Hoon (Environment/Power and Energy Department, National Maritime Research Institute)
  • Received : 2014.10.07
  • Accepted : 2014.11.13
  • Published : 2014.11.30
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Abstract

The use of emulsified fuel and EGR (Exhaust gas recirculation) system are effective methods to reduce NOx emission from diesel engines. In general, it is considered that EGR method influences diesel engine combustion in three different ways: thermal, chemical and dilution effect. Among others, the thermal effect is related to the increase of specific heat capacity due to the presence of $CO_2$ and $H_2O$ in inlet air. Meanwhile, emulsified fuel method of utilizing latent heat of vaporization and miro-explosion has been recognized as an effective technique for reducing diesel engine emissions. In this paper, an author studied on combustion and emission characteristics by using emulsified fuel (EF, Light oil : 80% + Water : 20%) and EGR (30% EGR ratio) system. And the effect of fuel injection pattern control was investigated.

에멀젼연료(Emulsified fuel)와 EGR(Exhaust Gas Recirculation)는 디젤엔진으로부터 발생하는 NOx를 저감시키는 효과적인 방법들이다. 일반적으로, EGR 방법은 열적, 화학적 그리고 희석효과의 세 가지 다른 경로에 의하여 디젤 엔진의 연소에 영향을 미치는 것으로 알려져 있다. 그중 특히 열적효과는 흡기 중의 이산화탄소와 수분에 의한 열용량의 증가와 관련되어 있다. 한편, 물의 증발열과 마이크로 폭발(Micro-explosion)을 이용하는 에멀젼연료는 디젤엔진의 배기 배출물을 저감시키는 효과적인 방법으로 인식되어 왔다. 본 연구에서 저자는 함수율 20%의 에멀젼연료와 EGR율 30%의 사용에 의한 연소와 배기 배출물 특성에 대하여 연구하였다. 그리고 연료 분사 패턴 제어의 효과에 대하여 조사하였다.

Keywords

References

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Cited by

  1. Mixture in Inlet Air on Combustion and Exhaust Emission Characteristic in diesel engine vol.19, pp.2, 2015, https://doi.org/10.9726/kspse.2015.19.2.064