Numerical Analysis of an Internal Combustion Engine Using One-Dimensional Code

Abstract:

The work aims to model a spark ignition reciprocating Internal Combustion Engine - ICE. A code was built in Object Pascal to simulate another ICE and now it is being adapted to this research single-cylinder engine using commercial ethanol. The model describes in-cylinder gas by conservation equations, including the momentum conservation, and solves combustion wave equations, such that detonation and deflagration are calculated by the same set of formulas. Adjustments were made to get a proper discharge coefficient for the valves and represent the internal geometry. The mass flow rate calculated by the program differed in only 1% of the experimental value. The maximum pressures from combustion graphs differed in less than 1% too and their curves were similar. Other parameters of interest, also found to be close to the experimental ones, are presented and discussed. The code also showed as a good result the simulation time, which was approximately two minutes.

• Periodical: Applied Mechanics and Materials (Volume 798)
• Pages: 224-228
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.798.224
• Online since: October 2015
• Authors: F.C. Radicchi*, J.M.G. Vieira, Leonardo Fonseca, Ramon Molina Valle, José Eduardo Mautone Barros
• Keywords: Combustion, Internal Combustion Engines, Objects Orientation, Simulation

References

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[2] I. Wiebe. Halbemprirische Formel für die Verbrennungsgeschwindigkeit. Moscow: Verlag der Akademie der Wissenschaften der UdSSR, (1967).

[3] M. J. Zucrow; J. D. Hoffman. Gas dynamics. New York: John Wiley & Sons, 1976. v. I e II.