A Computer-Based Air-Fuel Model for Analysing the Performance of Spark-Ignition Internal Combustion Engines

This paper presents a computer-based thermodynamic model of spark-ignition (SI) internal combustion engines. The air-fuel formulation enables the model to analyse the engine's performance with conventional and alternative fuels. The paper describes the mathematical formulation of the model and outlines the main features of its computer code. The model was verified against published results of earlier fuel-inducted air-fuel models and then used to analyse the performance of a SI engine with ethanol and ethanol-gasoline mixture. The engine's efficiency and indicated mean effective pressure were evaluated at different engine speeds, compression ratios and equivalence ratios. Keywords: Air-fuel model; Thermodynamic models; Spark-ignition engines; Alternative fuels.

[1]  M. Al-Hasan.  Effect of ethanol-unleaded gasoline blends on engine performance and exhaust emission , 2003 .

[2]  Investigations on the Combustion Modeling of Gaseous Fuels , 2010 .

[3]  José Ricardo Sodré,et al.  Hydrous ethanol vs. gasoline-ethanol blend: Engine performance and emissions , 2010 .

[4]  Nirendra N. Mustafi,et al.  Application of a Spark Ignition Engine Simulation Tool for Alternative Fuels , 2008 .

[5]  Matthew J. Brusstar,et al.  High Efficiency and Low Emissions from a Port-Injected Engine with Neat Alcohol Fuels , 2002 .

[6]  Yakup Sekmen,et al.  Mathematical Modeling of a SI Engine Cycle with Actual Air-Fuel Cycle Analyses , 2007 .

[7]  Ronnachart Munsin,et al.  An Experimental Study on Aldehyde Emissions of a Hydrous Ethanol Fuelled Small SI Engine Generator Set , 2010 .

[8]  A Chow,et al.  Thermodynamic modelling of complete engine systems—a review , 1999 .

[9]  Mohamed M. El-Awad,et al.  Determining the Thermodynamic Properties of Fuel Blends from those of their Components For Air-Fuel Models of IC Engines , 2012 .

[10]  Mohd Zamri Yusoff,et al.  A Quasi One-dimensional Simulation of a 4 Stroke Spark Ignition Hydrogen Fuelled Engine , 2005 .

[11]  W. Press,et al.  Numerical Recipes: The Art of Scientific Computing , 1987 .

[12]  Wang Ying,et al.  Effects of Methanol/Gasoline Blends on a Spark Ignition Engine Performance and Emissions , 2008 .

[13]  Yousef S.H. Najjar,et al.  Alternative Fuels for Spark Ignition Engines , 2009 .

[14]  John B. Heywood,et al.  Internal combustion engine fundamentals , 1988 .

[15]  S. Ramachandran.  Rapid Thermodynamic Simulation Model of an Internal Combustion Engine on Alternate Fuels , 2009 .

[16]  Ujjwal K Saha,et al.  INTERNAL COMBUSTION ENGINES , 1998 .

[17]  N. Buchanan,et al.  Internal-Combustion Engines , 1945 .

[18]  Rosli Abu Bakar,et al.  In-cylinder heat transfer characteristics of hydrogen fueled engine: a steady state approach , 2010 .

[19]  Michael Bargende,et al.  Calculating the thermodynamic properties of burnt gas and vapor fuel for user-defined fuels , 2007 .

[20]  L. M. Das,et al.  Effect of EGR on Performance and Emission Characteristics of Natural Gas Fueled Diesel Engine , 2010 .

[21]  D. R. Stull.  JANAF thermochemical tables , 1966 .