한국분무공학회지 (Journal of ILASS-Korea)

  • 제14권4호
  • /
  • Pages.171-177
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  • 2009
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  • 1226-2277(pISSN)
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  • 2288-9051(eISSN)
한국분무공학회 (Institute for Liquid Atomization and Spray Systems-Korea)
권호 표지

Effect of Fuel Injector-type Spark Plug on Combustion Characteristics

  • Yeom, J.K. (Division of Mechanical Engineering, Dong-A University) ;
  • Chung, S.S. (Division of Mechanical Engineering, Dong-A University)
  • 발행 : 2009.12.31
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초록

This study proposes a new stratified charge system for low emission and ultra lean burn. In order to examine combustion characteristics of the new system, sparkplug with a hole at positive pole and a common CNG injector for injecting fuel were used in this study as injector-type spark plug. The new stratified charge system injects fuel of extremely small quantities and ignites mixture around sparkplug gap. Also, the system was fitted in a visualized constant volume chamber. Then, for analysis of the combustion characteristics, we examined combustion pressure, lean inflammable limit, and visualized combustion flame according to equivalence ratio by comparison with homogeneous charge (HC) method and the new stratified charge (SC) method. As results of this study, in the case of using this system, the propagation speed of initial flame was increased and total combustion period was reduced in the ultra lean burn in the same equivalence ratio. These phenomena occurred clearly under the conditions of lean equivalence ratio. Furthermore, the lean inflammable limit of mixture was extended by using the injector-type spark plug.

키워드

참고문헌

  1. R. L. Evans, "Combustion chamber design for a leanbum SI engine", SAE paper No. 921545, 1992.
  2. H. Okano, "Development of lean burn engines in Toyota, Symposium of Lean Bum Gasoline Engine", JSME, 16, 1992, pp. 20-25.
  3. S. Iguchi, "Combustion and current status of lean bum engine, Symposium of Lean Burn Gasoline Engine", JSME, 16, 1992, pp. 1-16.
  4. S. Iguchi, "Development of lean burn engine system in Japan", The 6th Kia Motors International Symposium, Korea, 1, 1993, pp. 25-34.
  5. B. S. Kim, C. H. Kwon and J. I. Ryu, "Combustion characteristics of stratified mixture in a constant volume combustion chamber with sub-chamber", KSAE paper No. 953773, 1995, pp. 122-134.
  6. Y. Moriyoshi, H. Morikawa, T. Kamimoto and T. Hayashi, "Combustion of very lean enhancement premixture part in stratified charge conditions", SAE Paper No. 962087, 1996.
  7. Y. Iwamptp, K. Noma, T. Yamauchi and H. Ando, "Development of gasoline direct injection engine", SAE Paper No. 970541,1997.
  8. M. Kono, Y. Wada and Y. Ujie, "Promoting effect of liquid explosion aided by high energyid explon inhibition and combustion of mixture in a close vessel", JSAE Review, Vol. 9, No.2, 1998, pp. 10-14.
  9. L. Lewis and G. Von Elbe, "Combustion, flames and explosions in gases", 2nd Edit, Academic press, New York, 1961, pp. 199-400.
  10. M. S. Hong and K. S. Kim, "A study on direct injection stratified charge combustion with spark iguition in constant volume bomb", trans. KSME, Vol. 2, No.5, 1994, pp. 30-40.
  11. T. W. Lee, J. S. Lee, Y. J. Tak, S. S. Chung, and J. Y. Ha, "Fundamental study on combustion characteristics of methanol fuel in a constant volume chamber", KSME Transaction, Vol. 18, No.2, 1994, pp. 389-397.