An Experimental Study on Effect of Lower Tension Piston Rings on Piston Friction and Lubricating Oil Consumption

Abstract

This study was aimed at clarifying the effect of lower tension pisotn rings on piston friction and lubricating oil consumption(LOC). Floating liner method and sulfur tracer method were applied simultaneously to measure the piston fiction and LOC with gasoline engine. This paper described how each ring tension acts on both piston frictio nand LOC. In order to verify the reasons, oil film behavior around the piston and rings were observed by the engine with optical glass window.