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NON LINEAR SIMULATION MODEL OF ENGINE RESPONSE DUE TO PISTON-SLAP

Pages: 20 – 27

Nadim A. Emira and M. Riad Ghazy

Abstract:

Piston slap is a transient impact phenomenon existing in the reciprocating engine. It comprises a major cause of the complex transient vibration of the engine. In order to correlate the piston-slap impact with the slap-induced vibration and consequently find out an effective approach for the engine dynamic behavior simulation for improved prediction of engine vibration response, an investigation for theoretical modeling is proposed. The piston-slap phenomenon is discussed from the viewpoint of engine mechanics. Based upon this, a nonlinear model is developed to simulate the slap-induced vibration response. Using numerical integration procedure, the cylinder liner vibration response and its correlation with the piston-slap are reasonably evaluated.

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