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Simulation of Fuel/Air Mixture Formation for Heavy Duty Liquid Phase LPG Injection (LPLI) Engines
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 03, 2003 by SAE International in United States
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Submodels are developed for injection, evaporation and wall impingement of a liquid LPG spray. The injection model determines the quality of fuel as two-phase choke flow at the nozzle exit. Wind tunnel experiments show the spray penetration more sensitive to ambient flow velocity than to injection pressure. Most evaporation occurs during choking, while heat transfer from surrounding air has a negligible effect on downstream droplet sizes. Three dimensional simulation shows that the bathtub cavity is better than the dog-dish cavity for stable flame propagation in lean-burn conditions. The injection timing during the IVC period has a negligible effect, while injection during an intake stroke enhances fuel/air mixing to result in more homogeneous cylinder charge.
- Jaejoon Choi - Korea Advanced Institute of Science and Technology
- Choongsik Bae - Korea Advanced Institute of Science and Technology
- Eunju Lee - Pohang University of Science and Technology
- Jinwoo Park - Pohang University of Science and Technology
- Kang Y. Huh - Pohang University of Science and Technology
CitationLee, E., Park, J., Huh, K., Choi, J. et al., "Simulation of Fuel/Air Mixture Formation for Heavy Duty Liquid Phase LPG Injection (LPLI) Engines," SAE Technical Paper 2003-01-0636, 2003, https://doi.org/10.4271/2003-01-0636.
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