Patent ID: 7918155
Filing Date: 2011-04-05
Classification: F02F,Y10T

Abstract:
1. A piston for an internal combustion engine, comprising: a piston crown including a crown annular surface and a crown interior surface; and a piston skirt including a skirt annular surface and a skirt interior surface, the crown interior surface cooperating with the skirt interior surface to define a cooling gallery and a cooling gallery surface within the piston; wherein the crown annular surface and the skirt annular surface cooperate to form an annular passageway, the annular passageway allowing for fluid communication between an outer surface of the piston and the cooling gallery, the annular passageway defining an entrance to the cooling gallery; wherein at least one of the crown annular surface and the skirt annular surface extend away from the outer surface of the piston and into the cooling gallery to form a deflector along the cooling gallery surface, the deflector extending to the entrance, thereby limiting fluid flow from the cooling gallery to the outer surface of the piston.