Application of CFD to the matching of in-cylinder fuel injection and air motion in a four stroke gasoline engine

M. Y.E. Selim; J. C. Dent; S. Das

doi:10.4271/971601

Application of CFD to the matching of in-cylinder fuel injection and air motion in a four stroke gasoline engine

M. Y.E. Selim, J. C. Dent, S. Das

Research output: Contribution to journal › Conference article › peer-review

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 (NO_x 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.

Original language	English
Journal	SAE Technical Papers
DOIs	https://doi.org/10.4271/971601
Publication status	Published - 1997
Externally published	Yes
Event	International Spring Fuels and Lubricants Meeting - Dearborn, MI, United States Duration: May 5 1997 → May 8 1997

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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10.4271/971601

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title = "Application of CFD to the matching of in-cylinder fuel injection and air motion in a four stroke gasoline engine",

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.",

author = "Selim, {M. Y.E.} and Dent, {J. C.} and S. Das",

year = "1997",

doi = "10.4271/971601",

language = "English",

journal = "SAE Technical Papers",

issn = "0148-7191",

publisher = "SAE International",

note = "International Spring Fuels and Lubricants Meeting ; Conference date: 05-05-1997 Through 08-05-1997",

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TY - JOUR

T1 - Application of CFD to the matching of in-cylinder fuel injection and air motion in a four stroke gasoline engine

AU - Selim, M. Y.E.

AU - Dent, J. C.

AU - Das, S.

PY - 1997

Y1 - 1997

N2 - 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.

AB - 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.

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AN - SCOPUS:85072456835

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JO - SAE Technical Papers

JF - SAE Technical Papers

T2 - International Spring Fuels and Lubricants Meeting

Y2 - 5 May 1997 through 8 May 1997

ER -

Application of CFD to the matching of in-cylinder fuel injection and air motion in a four stroke gasoline engine

Abstract

ASJC Scopus subject areas

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