CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES

Description

This subclass covers the structural components and sealing systems of internal and external combustion engines, including cylinder design, piston construction, engine casings, and their manufacturing methods. It encompasses cylinder liners, piston rings, piston skirts, engine blocks, cylinder heads, and integrated sealing arrangements such as gaskets and dynamic seals. The classification includes innovations in material selection, surface treatments, geometric optimization, and assembly techniques for these components, as well as combined designs integrating multiple structural and sealing functions.