Piston for an internal combustion engine

摘要

A pivoted piston for an internal combustion engine. The piston has a pivot pin (14) and an arcuate first sealing surface 12 which describes a circumferential path about the pivot pin (14) which forms a removable and replaceable skirt to the piston. The piston also includes a second arcuate sealing surface (13) which also describes a circumferential path about the pivot pin and which is connected to the first arcuate sealing surface by a piston floor (21). The second arcuate sealing surface (13) is composed of at least two arcuate sealing components (24) which are located on a bed (20) with the components being located on the bed (20) so they will have limited transverse movement on the bed (20). The components (24) have mating faces which restrict the path of combustion gases between the mating faces. The piston further includes side seals (62) which are located in grooves (63) in the side of the piston. A restraining pin (60) assists in locating the seals (62) in the seal grooves and also closes a pressure escape path for the combustion gases. The piston further includes means to allow liquid coolant to pass through the pivot shaft 14, through liquid cooling galleries in the piston and out o the pivot shaft 14.