Technical Paper
Study of Engine Vibration Due to Piston Slap on Single Cylinder High Powered Engine
2005-01-19
2005-26-046
The piston slap is an important phenomenon in the engine, which governs the vibration, noise, and wear of liner surfaces. It occurs due to transverse and rotational motion of piston, which depends on clearance between piston and liner and is governed by geometry, mass and inertia properties of reciprocating parts, and gaseous loads. Piston slap is studied on single cylinder high-powered engine, which showed large vibrations and noise during the field trials. The classical methodology is used to determine secondary movement, contact forces and kinetic energy loss due to piston impact. The calculated result showed no major impact of piston on liner surfaces due to presence of hydrodynamic lubrication between two mating surfaces. The loss of kinetic energy due to the impact is of the order of 0.007 Nm, which is negligibly small.