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Advances in Mechanical Engineering
Volume 2012 (2012), Article ID 937917, 9 pages
http://dx.doi.org/10.1155/2012/937917
Research Article

Power Balancing of Inline Multicylinder Diesel Engine

1Department of Mechanical Engineering, M. E. Society's College of Engineering, Pune 411001, India
2Department of Mechanical Engineering, Government College of Engineering, Pune 411005, India

Received 26 July 2012; Accepted 3 October 2012

Academic Editor: Mehdi Ahmadian

Copyright © 2012 S. H. Gawande et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In this work, a simplified methodology is presented for power balancing by reducing the amplitude of engine speed variation, which result in excessive torsional vibrations of the crankshaft of inline six-cylinder diesel engine. In modern fuel injection systems for reciprocating engines, nonuniform cylinder-wise torque contribution is a common problem due to nonuniform fuel supply due to a defect in fuel injection system, causing increased torsional vibration levels of the crankshaft and stress of mechanical parts. In this paper, a mathematical model for the required fuel adjustment by using amplitude of engine speed variation applied on the flywheel based on engine dynamics is suggested. From the found empirical relations and FFT analysis, the amplitude of engine speed variation (i.e., torsional vibration levels) of the crankshaft of inline six-cylinder diesel engine genset can be reduced up to 55%. This proposed methodology is simulated by developing MATALB code for uniform and nonuniform working of direct injection diesel engine of SL90 type manufactured by Kirloskar Oil Engine Ltd., Pune, India.