The Effects of Roughness on Piston Ring Lubrication—Part II: The Relationship between Cylinder Wall Surface Topography and Oil Film Thickness

Abstract

In this investigation, a theoretical piston ring/cylinder wall model has been utilized to study the dependence of the oil film thickness on surface roughness shape and amplitude, as well as on engine operating conditions. For a given roughness, a plateau honed cylinder wall surface was found to produce a thinner oil film. It has also been shown that the small crosshatch angle used when honing the cylinder wall produces surfaces that enhance hydrodynamic action.

Presented at the 47th Annual Meeting in Philadelphia, Pennsylvania May 4–7, 1992

KEY WORDS:

• Pistons
• Film Thickness
• Surface Topography

Notes

Presented at the 47th Annual Meeting in Philadelphia, Pennsylvania May 4–7, 1992