Connection between lifting piston and connecting rod in vehicle engines

摘要

A piston pin (5) is held by bearings (3,4). One end (6) of the connecting rod on the piston side touches the piston pin between the bearings. The piston pin is mounted directly in the lifting piston (1) and in the end of the connecting rod. The cylindrical surface (7) of the piston pin co-operating with the connecting rod end and with the lifting piston has a coating possessing frictional coefficients which decrease with increasing surface pressure. The coating possesses even hardness over the thickness. The matching surfaces (8,9) on the lifting piston and connecting rod end and co-operating with the surface of the piston pin are formed without a coating directly by mechanical means.