International Journal of Automotive Technology

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

INJECTION STRATEGY OF DIESEL FUEL FOR AN ACTIVE REGENERATION DPF SYSTEM

  • Lee, C.H. (Environmental Parts R&D Center, Korea Automotive Technology Institute) ;
  • Oh, K.C. (Environmental Parts R&D Center, Korea Automotive Technology Institute) ;
  • Lee, C.B. (Environmental Parts R&D Center, Korea Automotive Technology Institute) ;
  • Kim, D.J. (Environmental Parts R&D Center, Korea Automotive Technology Institute) ;
  • Jo, J.D. (HYUNDAI MOBIS) ;
  • Cho, T.D. (Department of Mechanical Design Engineering, Chungnam National University)
  • Published : 2007.02.28
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Abstract

The number of vehicles employing diesel engines is rapidly rising. Accompanying this trend, application of an after-treatment system is strictly required as a result of reinforced exhaust regulations. The Diesel Particulate Filter (DPF) system is considered as the most efficient method to reduce particulate matter (PM), but the improvement of a regeneration performance at any engine operation point presents a considerable challenge by itself. Therefore, the present study evaluates the effect of fuel injection characteristics on regeneration performance in a DOC and a catalyzed CR-DPF system. The temperature distribution on the rear surface of the DOC and the exhaust gas emission were analyzed in accordance with fuel injection strategies and engine operating conditions. A temperature increase more than BPT of DPF system was obtained with a small amount fuel injection although the exhaust gas temperature was low and flow rate was high. This increase of temperature at the DPF inlet cause PM to oxidize completely by oxygen. In the case of multi-step injection, the abrupt temperature changes of DOC inlet didn't occur and THC slip also could not be observed. However, in the case of pulse type injection, the abrupt injection of much fuel results in the decrease of DOC inlet temperatures and the instantaneous slip of THC was observed.

Keywords

References

  1. Chiew, L., Kroner, P. and Ranalli, M. (2005). Diesel vaporizer: An innovative technology for reducing complexity and costs association with DPF regeneration. SAE Paper No. 2005-01-0671
  2. Fayard, J.-C., Joubert, E. and Seguelong, T. (2005). A new active DPF system for stop & go duty cycle vehicle: durability and improvements. SAE Paper No. 2005-01-1754
  3. Guo, G., Xu, N., Laing, P. M., Hammerle, R. H. and Maricq, M. M. (2003). Performance of a catalyzed diesel particulate filter system during soot accumulation and regeneration. SAE Paper No. 2003-01-0047
  4. Hiranuma, S., Takeda, Y., Kawatani, T., Doumeki, R. and Nagasaki, K. (2003). Development of DPF system for commercial vehicle-Basic characteristic and active regeneration performance. SAE Paper No. 2003-01- 3182
  5. Kodama, K., Hiranuma, S., Doumeki, R. and Takeda, Y. (2005). Development of DPF system for commercial vehicles (2nd Report)-Active regenerating function in various driving condition. SAE Paper No. 2005-01-3694
  6. Kong, Y. T., Huffmeyer, C., Johnson, R., Taylor, B., Crawley, W. and Hayworth, G. (2004). Applications of an active diesel particulate filter regeneration system. SAE Paper No. 2004-01-2660
  7. Kong, Y., Kozakiewicz, T., Johnson, R., Huffmeyer, C., Huckaby, J., Abel, J., Baurley, J. and Duffield, K. (2005). Active DPF regeneration for 2007 diesel engines. SAE Paper No. 2005-01-3509
  8. Konstandopoulos, A. G. and Kostoglou, M. (2000). Reciprocating flow regeneration of soot filter. Combustion and Flame, 121, 488-500 https://doi.org/10.1016/S0010-2180(99)00156-X
  9. Lee, C.-H., Lee, C.-B., Kim, D.-J., Oh, K.-C., Kang, J.- H., Choi, J.-M., Jo, J.-D., You, Y.-H. and Cho, T.-D. (2005). The experimental study of diesel fuel injection for active regeneration of DPF system. Proc. 13th Int. Pacific Conf. Automotive Engineering. Paper No. 81, Gyeongju, Korea
  10. Mayer, A., Kany, S., Richards, P., Andreassen, L., Sem, T. (2005). Retrofitting TRU-diesel engines with DPFsystems using FBC and intake throttling for active regeneration. SAE Paper No. 2005-01-0662
  11. Nakane, T., Ikeda, M., Hori, M., Bailey, O. and Mussmann, L. (2005). Investigation of the aging behavior of oxidation catalysts developed for active DPF regeneration systems. SAE Paper No. 2005-01-1759
  12. Oh, S. K., Baik, D. S. and Han, Y. C. (2002). performance and exhaust gas characteristics on diesel particulate filter trap, Int. J. Automotive Technology 3, 3, 111-115
  13. Richards, P., Vincent, M. and Chadderton, W. J. (2005). Service application of a novel fuel borne catalyst dosing system for DPF retrofit. SAE Paper No. 2005-01-0669
  14. Suto, H. (1997). Regeneration method using a cerium based fuel additive on SiC honeycomb DPF-self regeneration at low exhaust temperature. JSAE Review 18, 2, 202
  15. Vincent, M. W., Richards, P. J. and Rogers, T. J. (2002). Effective particulates reduction in diesel engines through the use of fuel catalyzed particulate filter. Int. J. Automotive Technology 3, 1, 1-8
  16. Webb, C. C., Weber, P. A. and Thornton, M. (2004). Achieving tier 2 bin 5 emission levels with a medium duty diesel pick-up and a NOx adsorber, diesel particulate filter emissions system-exhaust gas temperature management. SAE Paper No. 2004-01-0584
  17. Yamane, K., Yuuki, R., Kawasaki, K., Asakawa, T., Numao, H. and Komori, M. (2005). Characteristics of DPF for diesel engine fueled with biodiesel fuel-2nd report: Exhaust gas emission characteristics at selfregeneration of DPF. SAE Paper No. 2005-01-2198
  18. Zheng, H. and Keith, J. M. (2004). Ignition analysis of wall-flow monolith diesel particulate filters. Catalysis Today, 98, 403-412 https://doi.org/10.1016/j.cattod.2004.08.008