Combustion Process Modeling using a Reduced Mechanism in an LPG Lean Burn SI Engine

1999-01-3481

10/25/1999

Event
International Fuels & Lubricants Meeting & Exposition
Authors Abstract
Content
Flame propagation characteristics, in a heavy-duty type LPG lean burn SI engine, were investigated by simulation methodology, using the global one step and the ten step chemical kinetic reaction mechanisms, respectively. The swirl ratio and equivalence ratio were varied to investigate their effects on flame front speed. The effect of increased swirl intensity on flame speed was very minor at ranges of equivalence ratio of this study. Flame front shape, however, was affected by swirl intensity. Circular flame front formed for a higher swirl ratio, which is in a qualitative accordance with that of measurements. Comparison between calculation and measurements of flame propagation characteristics shows a good agreement for both the global one step and the ten step chemical kinetic model. This work concludes that the reduced chemical kinetic reactions, consisting of ten steps, is useful for flame propagation study in an LPG SI engine.
Meta TagsDetails
DOI
https://doi.org/10.4271/1999-01-3481
Pages
9
Citation
Kim, I., Lee, D., and Goto, S., "Combustion Process Modeling using a Reduced Mechanism in an LPG Lean Burn SI Engine," SAE Technical Paper 1999-01-3481, 1999, https://doi.org/10.4271/1999-01-3481.
Additional Details
Publisher
Published
Oct 25, 1999
Product Code
1999-01-3481
Content Type
Technical Paper
Language
English