Experimental study of the disjoining pressure in the cylinder oil films on marine diesel engine piston rings

The paper includes the results of the experimental study of the disjoining pressure in the thin oil films with anisotropic properties on the grey cast iron piston rings. It is shown that the disjoining pressure in the thin film, in a mode of self-regulation, can automatically balance the normal load between a pair “ring – cylinder liner”. The received data is used to increase the reliability of marine diesel engines by preventing from sudden failures as the result of piston ring breakage.