Research Article Open Access

Experimental and Skeletal Kinetic Model Study of Compressed Natural Gas Fueled Homogeneous Charge Compression Ignition Engine

P. M. Diaz1, B. Durga Prasad2, D.S. Manoj Abraham3 and K. PalaniKumar4
  • 1 Sathyabama University, India
  • 2 JNTU College of Engineering, Ananthapur (AP), India
  • 3 Department of Mechanical Engineering, Ponjesly College of Engineering, India
  • 4 Sri Sairam Institute of Technology, Chennai, India

Abstract

Problem statement: In homogeneous charge compression ignition engines fuel oxidation chemistry determines the auto-ignition timing, heat release, reaction intermediates and the ultimate products of combustion. To shorten development time and to understand combustion processes, the use of simulation is increasing. Approach: A model that correctly simulates fuel oxidation at these conditions would be a useful design tool. Detailed models of hydrocarbon fuel oxidation, consisting of hundreds of chemical species and thousands of reactions. A way to lessen the burden was to use a skeletal reaction model, containing only tens of species and reactions. Results: The model was developed from the existing pre-ignition model, which had 10 species, 5 elementary reactions for kinetic and 6 elementary reactions for equilibrium and the standard k-ε turbulence model had been used in this investigation. This model combines the chemistry of the low, intermediate and high temperature regions. Conclusion: Simulations are compared with measured and calculated data from the engine operating at the following conditions: speed 1500 RPM, inlet temperature 363-433 K, fuel CNG and λ range 3-5. The simulations are generally in good agreement with the experimental data including temperature, pressure, combustion duration and ignition delay and heat release.

American Journal of Applied Sciences
Volume 9 No. 6, 2012, 917-923

DOI: https://doi.org/10.3844/ajassp.2012.917.923

Submitted On: 7 June 2011 Published On: 22 March 2012

How to Cite: Diaz, P. M., Prasad, B. D., Abraham, D. M. & PalaniKumar, K. (2012). Experimental and Skeletal Kinetic Model Study of Compressed Natural Gas Fueled Homogeneous Charge Compression Ignition Engine. American Journal of Applied Sciences, 9(6), 917-923. https://doi.org/10.3844/ajassp.2012.917.923

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Keywords

  • Internal combustion engine
  • top dead centre
  • spark ignition
  • compression ignition