CFD Modeling of In-Cylinder Fuel-Air Mixing in a CNG-Fuelled SI Engine with Port Gas Injection 2010-32-0003
The concept of fuel-air mixture stratification is evaluated for a single cylinder, 200-cc CNG-fuelled SI engine with port gas injection (PGI). A detailed study based on three-dimensional computational fluid dynamics (CFD) modeling has been reported. Fuel-air stratification was observed in case of PGI compared to premixed fuel-air mixture formed by a conventional gas carburetor system. Overall stratification of more than 15% was observed for PGI between the rich and lean zones in the combustion chamber compared to less than 1% in case of premixed gas carburetor. It was observed that the gas injection location, direction, timing, duration and injection pressure have a significant effect on stratification pattern.
Citation: Garg, M. and Ravikrishna, R., "CFD Modeling of In-Cylinder Fuel-Air Mixing in a CNG-Fuelled SI Engine with Port Gas Injection," SAE Technical Paper 2010-32-0003, 2010, https://doi.org/10.4271/2010-32-0003. Download Citation
Author(s):
Manish Garg, R Ravikrishna
Affiliated:
TVS Motor Co., Ltd., Indian Institute of Science
Pages: 12
Event:
Small Engine Technology Conference & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Computational fluid dynamics
Spark ignition engines
Combustion chambers
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