Patent ID: 6701875
Filing Date: 2004-03-09
Classification: F01P,F02B,Y02T

Abstract:
An internal combustion engine, comprising:an engine body including an engine cylinder; a piston positionable in said engine cylinder, said piston including a piston body including an upper crown portion, at least one depending support portion and a skirt, said upper crown portion including an undersurface and a cooling oil gallery formed in said undersurface; a connecting rod; a piston pin extending through said at least one depending support portion to connect said connecting rod and said piston; a cooling nozzle mounted on the engine to direct oil along a flow path toward said cooling gallery; and a deflecting surface extending from one of said upper crown portion and said skirt, said deflecting surface positioned in said flow path of oil from said cooling nozzle to deflect a portion of the oil into a deflected flow path toward said piston pin while permitting another portion of the oil flowing along said flow path to flow to said cooling oil gallery, wherein said piston further includes a bottom wall at least partially covering said cooling oil gallery and an inlet flow port formed in said bottom wall, said inlet flow port positioned to permit oil flowing along said flow path to enter said cooling oil gallery, said bottom wall being a cover plate mounted on said upper crown portion, wherein said deflecting surface is formed on a baffle, said baffle formed by a portion of said cover plate and including a distal edge positioned in said flow path.