Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Study on the Effects of EGR with Syngas Addition in a Gasoline Engine

가솔린 엔진에서 합성가스 첨가량에 따른 EGR 효과에 대한 연구

  • Published : 2007.11.01
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Abstract

The purpose of this study is to reduce harmful emission gases in the range of stable combustion without loss of a thermal efficiency. Therefore, effects of both exhaust gas recirculation(EGR) and synthetic gas addition on engine performance and emission were investigated in a gasoline engine. Synthetic gas(syngas), which is in general prepared from reforming gasoline, was utilized in order to promote stable combustion. The major components of syngas are H2, CO and $N_2$ gases. The percentage of syngas addition was changed from 0 to 30% in energy fraction and EGR rate was varied up to 30%. As a result, $COV_{IMEP}$ as a parameter of combustion stability was decreased and THC/$NO_X$ emissions were reduced with the increase of syngas addition. And $COV_{IMEP}$ was increased with the increase of EGR but $NO_X$ emission was greatly reduced. In addition, under the region where the EGR rate is around 20%, thermal efficiency was improved.

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References

  1. J. T. Lee, 'Current Status and Characteristics of Hydrogen Fueled Engine,' Journal of KSAE, Vol.18, No.2, pp.29-52, 1996
  2. Y. Jamal and M. L. Wysznski, 'On-board Generation of Hydrogen-rich Gaseous Fuels - A Review,' International Journal of Hydrogen Energy, Vol.19, No.7 pp.557-572, 1994 https://doi.org/10.1016/0360-3199(94)90213-5
  3. J. S. MacDonald, 'Evaluation of the Hydrogen- Supplemented Fuel Concept with an Experimental Multicylinder Engine,' SAE 760101, 1976
  4. J. G. Finegold, 'Hydrogen: Primary or Supplementary Fuel for Automotive Engines,' SAE 760609, 1976
  5. S. R. Turns, An Introduction to Combustion, McGraw-Hill, International edns, Singapore, 2000
  6. Z. Ivanic, F. Ayala, J. Golwitz and J. B. Heywood, 'Effects of Hydrogen Enhancement on Efficiency and $NO_x$ Emissions of Lean and EGR-Diluted Mixtures in a SI Engine,' SAE 2005-01-0253, 2005
  7. A. Cairns and H. Blaxill, 'The Effects of Combined Internal and External Exhaust Gas Recirculation on Gasoline Controlled Auto- Ignition,' SAE 2005-01-0133, 2005
  8. F. Schafer and R. van Basshuysen, Reduced Emissions and Fuel Consumption in Automobile Engines, Springer-Verlag, 1995
  9. J. B. Heywood, Internal Combustion Engine Fundamentals, McGraw-Hill, International edns, Singapore, 1988