Vol. 5 No. 1 (2021)
Articles

Experimental Analysis of Piston Ring to Reduce Friction by Using Different Lubricants (Sae15w And Sae30w) for a Four Stroke Four Cylinder Petrol Engine

Published 2022-04-22

Keywords

  • Piston Ring, Friction, Lubricating Oil (SAE15W and SAE30W), 4-Stroke Four Cylinder Petrol Engine

Abstract

The friction at the piston ring cylinder liner assembly is a major contributor in the total friction losses in the I.C. engine. The friction produced due to PRA has a major contribution in total frictional losses of the engine. The piston ring assembly is dominant sources of the engine rubbing forces. The components in Piston Ring Assembly are compression ring, oil control ring and piston skirts are the responsible for the frictional force. The present work deals with evaluation of the friction in the piston ring cylinder liner assembly for a 4-stroke four cylinder petrol engine. In this study Friction is evaluated for existing rectangular shaped piston ring for two different lubricating oils at various engine speeds. An attempt was also   made to evaluate the friction for a piston ring of different geometry.  Friction is evaluated for an existing piston ring design (rectangular shaped) for two different lubricating oils at various engine speeds. It is also attempted to evaluate friction for a parabolic ring face profile. To evaluate the frictional force a model proposed by the YUKIO is considered for the evaluation of friction in the existing (rectangular shaped) piston rings. It is seen from the results that the friction for the rectangular shaped piston ring profile is more as compare to the parabolic piston ring profile. The experimental work was conducted on a four stroke 4-cylinder SI engine with an application of different lubricants (SAE15W and SAE30W) on given piston ring geometry from speed range from 1550 rpm to 3800 rpm. It is seen that the maximum value of the frictional force is higher for the lubricant SAE30W which may cause - higher wear of the rings. The use of lubricant SAE15W in the given setup would cause less wear of piston rings due to reduce frictional forces.