CPC Main Group
F01L 27/00 Distribution or expansion valve-gear peculiar to free-piston machines or engines and not provided for in F01L21/00 - F01L25/00
2 direct subcodes
Child Classifications
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- F01L 27/02 the machine or engine having rotary or oscillatory valves
- F01L 27/04 Delayed-action controls, e.g. of cataract or dashpot type