An Otto Engine Dynamic Model
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Abstract
Otto engine dynamics are similar in almost all common internal combustion engines. We can speak so about dynamics of engines: Lenoir, Otto, and Diesel. The dynamic presented model is simple and original. The first thing necessary in the calculation of Otto engine dynamics, is to determine the inertial mass reduced at the piston. One uses then the Lagrange equation. Kinetic energy conservation shows angular speed variation (from the shaft) with inertial masses. One uses and elastic constant of the crank shaft, k. Calculations should be made for an engine with a single cylinder. Finally it makes a dynamic analysis of the mechanism with discussion and conclusions. The ratio between the crank length r and the length of the connecting-rod l is noted with landa. When landa increases the mechanism dynamics is deteriorating. For a proper operation is necessary the reduction of the ratio landa, especially if we want to increase the engine speed. We can reduce the acceleration values by reducing the dimensions r and l.
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References
AMORESANO, A.; AVAGLIANO, V.; NIOLA, V.; QUAREMBA, G. (2013) The Assessment of the in-Cylinder Pressure by Means of the Morpho-Dynamical Vibration Analysis – Methodology and Application, in IREME Journal, v. 7, n. 6, September, p. 999-1006.
DAWSON, J. (2005) An experimental and Computational Study of Internal Combustion Engine Modeling for Controls Oriented Research, Ph.D. Dissertation, The Ohio State University.
DE FALCO, D.; DI MASSA, G.; PAGANO, S.; STRANO, S. (2013a) Motorcycle Handlebar Dynamic Response: Theoretical and Experimental Investigation, in IREME Journal, v. 7, n. 5, July, p. 795-801.
DE FALCO, D.; DI MASSA, G.; PAGANO, S. (2013b) A Full Scale Motorcycle Dynamic Rig, in IREME Journal, v. 7, n. 3, p. 519-526.
GUZZELLA, L. (2004) Introduction to Modeling and Control of Internal Combustion Engine Systems, Springer, New York.
HEYWOOD, J. (1988) Internal Combustion Engine Fundamentals, book: McGraw-Hill, New York.
PETRESCU, F. I.; PETRESCU, R. V. (2005) Determining the mechanical efficiency of Otto engine’s mechanism, Proceedings of International Symposium, SYROM 2005, p. 141-146.
PETRESCU, F. I.; PETRESCU, R. V. (2009) Din istoria motoarelor cu ardere internă, Revista Auto Test, n. 151, Decembrie, p. 46-49, ISSN 1221-2687.
PETRESCU, F. I. (2012a) Teoria mecanismelor: Curs si aplicatii (editia a doua), Create Space publisher, USA, September, ISBN 978-1-4792-9362-9, 284 pages, Romanian version.
PETRESCU, F. I.; PETRESCU, R. V. (2012b) Mechanical Engineering Design I, BoD–Books on Demand, Germany.
PETRESCU, F. I.; PETRESCU, R. V. (2014a) Balancing Otto Engines, International Review of Mechanical Engineering (IREME), v. 8, n. 3, p. 473-480. Retrieved from: http://www.praiseworthyprize.org/jsm/index.php?journal=ireme&page=article&op=view&path%5B%5D=14299
PETRESCU, F. I.; PETRESCU, R. V. (2014b) Determination of the Yield of Internal Combustion Thermal Engines, International Review of Mechanical Engineering (IREME), v. 8, n. 1, p. 62-67. Retrieved from: http://www.praiseworthyprize.org/jsm/index.php?journal=ireme&page=article&op=view&path%5B%5D=14184
PETRESCU, F. I.; PETRESCU, R. V. (2014c) Forces of Internal Combustion Heat Engines, International Review on Modelling and Simulations (IREMOS), v. 7, n. 1, p. 206-212, Retrieved from: http://www.praiseworthyprize.org/jsm/index.php?journal=iremos&page=article&op=view&path[]=14218
PETRESCU, F. I. (2015) Machine Motion Equations at the Internal Combustion Heat Engines, (2015) American Journal of Engineering and Applied Sciences, v. 8, n. 1, p. 127-137, Retrieved from: http://thescipub.com/abstract/10.3844/ajeassp.2015.127.137
RAMOS, J. (1989) Internal Combustion Engine Modelling, book: Hemisphere Publishing Corporation, New York.