Diesel engines are becoming more and more popular as a power source for transportation and industry utility because of their better fuel efficiency over gasoline engines. At the same time, more and more stringent emission regulations on internal combustion engines have been used by governments all over the world. NOx emission control has become one of the biggest challenges in the design of Diesel engines. Previous experiments and simulations have shown that the multi-fuel-injection strategy can potentially reduce NOx emission in Diesel engines. In this study, more detailed numerical simulations have been conducted for up to 5 split fuel injections as compared to the conventional single fuel injection strategy to explore the effect of multi-fuel-injection on NOx reduction. KIVA-3V release 2, a multi-dimensional computational code employing combustion model, turbulence model, spray model and NOx production model, has been used in the numerical simulation. The combinations of multi-fuel-injection strategy with EGR (Exhaust Gas Recirculation) technique and multi-hole injectors are investigated as well. The results of this investigation have demonstrated that the use of the multi-fuel-injection strategy can effectively reduce the NOx emission in Diesel engines. Combined with other NOx reduction techniques, multi-fuel-injection strategy is a very promising way to make modern Diesel engines comply with the ever-stringent emission targets.
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ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems
July 17–22, 2005
San Francisco, California, USA
Conference Sponsors:
- Heat Transfer Division and Electronic and Photonic Packaging Division
ISBN:
0-7918-4731-4
PROCEEDINGS PAPER
A Numerical Study of the Effect of Multi-Injection Strategy on NOx Reduction in DI Diesel Engines Available to Purchase
Yan Wang,
Yan Wang
University of Western Ontario, London, ON, Canada
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Chao Zhang,
Chao Zhang
University of Western Ontario, London, ON, Canada
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Jin Jiang
Jin Jiang
University of Western Ontario, London, ON, Canada
Search for other works by this author on:
Yan Wang
University of Western Ontario, London, ON, Canada
Chao Zhang
University of Western Ontario, London, ON, Canada
Jin Jiang
University of Western Ontario, London, ON, Canada
Paper No:
HT2005-72741, pp. 759-765; 7 pages
Published Online:
March 9, 2009
Citation
Wang, Y, Zhang, C, & Jiang, J. "A Numerical Study of the Effect of Multi-Injection Strategy on NOx Reduction in DI Diesel Engines." Proceedings of the ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. Heat Transfer: Volume 1. San Francisco, California, USA. July 17–22, 2005. pp. 759-765. ASME. https://doi.org/10.1115/HT2005-72741
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