Application of CFD to the Matching of In-Cylinder Fuel Injection and Air Motion in a Four Stroke Gasoline Engine

Paper #:
  • 971601

Published:
  • 1997-05-01
Citation:
Selim, M., Dent, J., and Das, S., "Application of CFD to the Matching of In-Cylinder Fuel Injection and Air Motion in a Four Stroke Gasoline Engine," SAE Technical Paper 971601, 1997, https://doi.org/10.4271/971601.
Pages:
14
Abstract:
The in cylinder air motion, fuel air mixing, evaporation, combustion and exhaust emissions have been simulated for a four stroke direct injection gasoline engine using the KIVA II code. A strong controlled tumbling air motion was created in the cylinder, through a combination of a conventional pentroof four valve cylinder head, in conjunction with a piston having a stepped crown and offset combustion bowl. A range of injection strategies were employed to optimise combustion rate and exhaust emission (NOx and unburned hydrocarbons (fuel)), at two operating conditions - one with a stoichiometric air fuel mixture and the other with a lean mixture of 30:1 air/fuel ratio. Injection directed towards the piston bowl with a hollow cone jet, in a single pulse, has shown the best results regarding burned mass fraction and level of unburned HC. Fuel concentration, air motion, combustion characteristics and pollutants level are presented for lean and stoichiometric cases.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Article
2017-03-13
Training / Education
2018-04-09