Abstract: A piston ring assembly for an internal combustion engine is provided. The piston ring assembly includes a plurality of seal rings, i.e., a first seal ring and a second seal ring. The seal rings are positioned on at least a portion of a piston crown periphery axially and radially adjacent to each other within the internal combustion engine and at least a portion of the first seal ring at least partially extends over at least a portion of the second seal ring.

Abstract: A piston assembly for an internal combustion engine is provided. The piston assembly includes at least one connecting rod comprising at least one wall that defines at least one first cooling fluid passage within the connecting rod. The piston assembly also includes at least one piston body including at least one wall coupled to the connecting rod. The piston body wall defines at least one second cooling fluid passage within the piston body that is coupled in flow communication with the first cooling fluid passage. The piston assembly further includes at least one piston pin positioned within the second cooling fluid passage and is coupled to at least a portion of the connecting rod and at least a portion of the piston body. The piston assembly also includes at least one piston crown including at least one wall coupled to the piston body. The piston crown wall defines at least one third cooling fluid passage within the piston crown.