International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
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SPRAY CHARACTERISTICS OF DME IN CONDITIONS OF COMMON RAIL INJECTION SYSTEM(II)

  • Hwang, J.S. (Department of Agricultural Machinery Engineering, Chungbuk National University) ;
  • Ha, J.S. (Department of Agricultural Machinery Engineering, Chungbuk National University) ;
  • No, S.Y. (Department of Agricultural Machinery Engineering, Chungbuk National University)
  • Published : 2003.09.01
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Abstract

Dimethyl Ether (DME) is an excellent alternative fuel that provides lower particulate matter (PM) than diesel fuel under the same engine operating conditions. Spray characteristical of DME in common rail injection system were investigated within a constant volume chamber by using the particle motion analysis system. The injector used in this study has a single hole with the different orifice diameter of 0.2, 0.3 and 0.4 mm. The injection pressure was fixed at 35MPa and the ambient pressure was varied from 0.6 to 1.5 MPa. Spray characteristics such as spray angle, spray tip penetration and SMD (Sauter mean diameter) were measured. Spray angle was measured at 30d$_{0}$, downstream of the nozzle tip. The measured spray angie increased with increase in the ambient pressure. Increase of the ambient pressure results in a decrease of spray penetration. The experimental result, of spray penetration were compared with the predicted one by theoretical and empirical models. Increase in the ambient pressure and nozzle diameter results in an increase of SMD at a distance 30, 45 and 60d$_{0}$, downstream of the nozzle, respectively.ely.

Keywords

References

  1. Chang, C. T. and Farrell, P. V. (1997). Effects of fuel viscosity and nozzle on high injection pressure diesel spray charactehstics. SAE Paper No. 970353
  2. Chikachisa, T., Hishinuma, Y. and Ushida, H. (2002)Mixing condifions with spray-jet interaction for effective soot reduction in diesel combustion. Int. J. Automotive TechnoIogy 3,1, 17-25
  3. Dan, T., Yamamoto, T., Senda, J. and Fujimoto, H. (1997). Effect of nozzle configurations for characteristics of non-reacting diesel fuel spray. SAE Paper No. 970355
  4. Hiroyasu, H. and Arai, M. (1990). Structures of fuel spray in diesel engines. SAE Paper No. 900475
  5. Huai, T.. Durbin. T. D.. Rhee. S. H. and Norbeck, J. M. (2003). Investigation of emission rates of ammonia, nitrous oxide and other exhaust compounds from alternative-fuel vehicles using a chassis dynamcmeter. Int. J. Automotive Technotogy 4,1,9-18
  6. Kajitani, S., Oguma, M. and Mori, T. (2000). DME fuel blends for low-emission, direct-injection diesel engines. SAE Paper No. 2000-01-2004
  7. Oguma, M., Hyun, G., Alam, M., Goto, S. and Kajitani, S. (2001). Effect of ambient pressure on atomization characteristics of dimehtyl ether. Proc. of the 6th Annual Conference on Liquid Atomization and Spray Systems-Asia, 11-13 Oct., Busan, Korea, 196-231
  8. Oh, S. K., Baik, D. S. and Han, Y. C. (2002). c. Int. J. Automotive Technotogy 3, 3, 111-115
  9. Sorenson, S. C., Bek, B. H., Glensvig, M. and Abeata, D. L. (1998). Dimethyl ether injection studies. Proc. of the Second Int. Workshop on Advanced Spray Com-bustion. 24-26 Nov., Hiroshima, Japan, 151-164
  10. Wakai, K., Nishida, K., Yoshizaki, T. and Hiroyasu, H. (1999). Spray charactehstics of dimethyl ether from a DI diesel injection nozzle. Trans. of JSAE 30, 1, 41-47
  11. Wakuri, Y., Fuji, M., Amitani, T. and Tsuneya, R. (1960). Studies on the penetration of fuel spray in a diesel engine. BuUetin of JSME 3, 9, 123-130 https://doi.org/10.1299/jsme1958.3.123
  12. Xu, M., Nishida, K. and Hiroyasu, H. (1992). A practical calculation method for injection pressure and spray penetration in diesel engines. SAE Paper No. 920624
  13. Yoshijaki, T., Wakai, K., Nishida, K. and Hiroyasu, H. (1998). Experimental and numedcal analysis on spray tip penetration of DME spray. 7th Symposium (ILASS-Japan) on Atomiwtion, 21-23 Dec., Gunma University. Japan, 184-188