International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

COMPARISON OF THE COMBUSTION CHARACTERISTICS BETWEEN S.I. ENGINE AND R.I. ENGINE

  • Chung, S.S. (Department of Mechanical Engineering, Dong-A University) ;
  • Ha, J.Y. (Department of Mechanical Engineering, Dong-A University) ;
  • Park, J.S. (Dong-A University, Graduate School, Department of Mechanical Engineering) ;
  • Kim, K.J. (Dong-A University, Graduate School, Department of Mechanical Engineering) ;
  • Yeom, J.K. (Department of Mechanical Engineering, Dong-A University)
  • Published : 2007.02.28
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Abstract

This experimental study was carried out to obtain both low emissions and high thermal efficiency by rapid bulk combustion. Two kinds of experiments were conducted to obtain fundamental data on the operation of a RI engine by a radical ignition method. First, the basic experiments were conducted to confirm rapid bulk combustion by using a radical ignition method in a constant volume chamber (CVC). In this experiment, the combustion velocity was much higher than that of a conventional method. Next, to investigate the desirable condition of engine operation using radical ignition, an applied experiment was conducted in an actual engine based on the basic experiment results obtained from CVC condition. A sub-chamber-type diesel engine was reconstructed using a SPI type engine with controlled injection duration and spark timing, and finally, converted to a RI engine. In this study, the operation characteristics of the RI engine were examined according to the sub-chamber's specifications such as the sub-chamber volume and the diameter and number of passage holes. These experimental results showed that the RI engine operated successfully and was affected by the ratio of the passage hole area to the sub-chamber volume.

Keywords

References

  1. Hirano, T. (1986). Combustion Theory, KAIBUNDO, 30-71
  2. Iida, N. (1993). Combustion and emission of low heat rejection, ceramic methanol ATAC engine. Trans. Japan Society of Mechanical Engineers B, 59, 568, 4030-4037 https://doi.org/10.1299/kikaib.59.4030
  3. Jeong, Y. I. (1998). Automotive Environment, 32-256
  4. Kito, S., Wakai, K., Takahashi, S., Fukaya, N. and Takada, Y. (2000). Ignition limit of lean mixture by hydrogen flame jet ignition. JSAE Review 21, 3, 373-378 https://doi.org/10.1016/S0389-4304(00)00057-6
  5. Lee, J. S. (1996). Effect of ignition-energy characteristics on the ignition and the combustion of a premixed gas. Trans. Korean Society of Automotive Engineers 4, 1, 28-35
  6. Lee, J. S. (1998). Effect of ignition energy discharge characteristics on the lean flammability limit. Trans. Korean Society of Automotive Engineers 6, 4, 47-55
  7. Park, K. S., Kim, D. I., Lee, H. S., Chun, B. H., Yoon, W. S. and Chun, K. M. (2001). Effect of ethane($C_2H_4$) on the plasma $DeNO_x$ process from diesel engine exhaust. Int. J. Automotive Technology 2, 2, 77-83
  8. Park, J. S., Choi, H. S., Lee, M. J., Lee, T. W., Ha, J. Y. and Chung, S. S. (2002). A fundamental study to improve the ignitability of lean mixture by radicals induced injection in a constant volume combustor. FISITA. Helsinki
  9. Park, J. S., Kang, B. M., Kim, K. J., Lee, T. W., Yeom, J. K. and Chung, S. S. (2005). Study on combustion characteristics and application of radical induced ignition method in an actual engine. Int. J. Automotive Technology 6, 6, 555-561
  10. Park, J. S., Yeom, J. K., Lee, T. W., Ha, J. Y. and Chung, S. S. (2006). Study on pre-mixture combustion in a sub-chamber type CVC with multiple passage holes. Int. J. Automotive Technology 7, 1, 17-23
  11. Pascal, H. (1999). New combustion concept for internal combustion engines. Proc. 15th Internal Combustion Engine Symp., No. 9935761, Korea