Simulation of Fuel/Air Mixture Formation for Heavy Duty Liquid Phase LPG Injection (LPLI) Engines

2003-01-0636

03/03/2003

Event
SAE 2003 World Congress & Exhibition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2003-01-0636
Pages
13
Citation
Lee, 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.
Additional Details
Publisher
Published
Mar 3, 2003
Product Code
2003-01-0636
Content Type
Technical Paper
Language
English