Lubrication for a piston of a reciprocating piston internal combustion engine

摘要

On the bottom edge of an oil scraper ring groove 22 of the piston of a reciprocating piston internal combustion engine, recesses 25 are fitted in the peripheral areas above the piston pin bosses, by means of which recesses excess oil is drained off or partially diverted by way of exit recesses 29 on the upper edge of the oil scraper ring groove 22 to the piston bearing face and minor thrust face.