PISTON WITH A COOLING GALLERY

摘要

A piston (20) for an internal combustion engine is provided. The piston crown (22) includes an interior surface that defines at least in part a cooling gallery (56) and a cooling gallery surface within the piston. An annular surface (80,82) may defines at least in part an annular passageway (74) that allows fluid communication between an outer surface of the piston and the cooling gallery. Opposing annular surfaces may be abutted with a predetermined force, thereby limiting fluid flow from the cooling gallery to an outer surface of the piston. Further, an annular surface may extend into the cooling gallery to form a deflector (84) along the cooling gallery surface, thereby limiting fluid flow from the cooling gallery to an outer surface of the piston.