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

Introduced: September 1968

Last revised: July 1974

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
Subclass:: 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.

Scope Notes

Application references: Specially adapted for rotary-piston or oscillating-piston internal-combustion engines Specially adapted for gas-turbine plants Specially adapted for jet-propulsion plants

5 direct subcodes

Child Classifications

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F02F 1/00 Cylinders; Cylinder heads
F02F 11/00 Arrangements of sealings in combustion engines
F02F 3/00 Pistons
F02F 5/00 Piston rings, e.g. associated with piston crown
F02F 7/00 Casings, e.g. crankcases