Valve-gear or valve arrangements, e.g. lift-valve gear

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
Class:: MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
Subclass:: CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES

Application references: Valve-gear specially for steam engines or specially for other machines or engines with variable fluid distribution

11 direct subcodes

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F01L 1/02 Valve drive
F01L 1/12 Transmitting-gear between valve drive and valve
F01L 1/2 Adjusting or compensating clearance, i.e. lash adjustment
F01L 1/26 characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift valves per cylinder
F01L 1/28 characterised by the provision of coaxial valves; characterised by the provision of valves co-operating with both intake and exhaust ports
F01L 1/3 characterised by the provision of positively opened and closed valves, i.e. desmodromic valves
F01L 1/32 characterised by the provision of means for rotating lift valves, e.g. to diminish wear
F01L 1/34 characterised by the provision of means for changing the timing of the valves without changing the duration of opening
F01L 1/36 peculiar to machines or engines of specific type other than four-stroke cycle
F01L 1/44 Multiple-valve gear or arrangements, not provided for in preceding subgroups, e.g. with lift and different valves
F01L 1/46 Component parts, details, or accessories, not provided for in preceding subgroups