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PCE
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DIFF Subgroup
F01C 20/10

characterised by changing the positions of the inlet or outlet openings with respect to the working chamber

Introduced: January 2006

Full Title

Control of, monitoring of, or safety arrangements for, machines or engines > characterised by changing the positions of the inlet or outlet openings with respect to the working chamber

IPC and CPC are identically structured here. All 3 subcodes exist in both systems.

IPC defines codes here since 2006.

Child Classifications

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  • F01C 20/14 using rotating valves since 2006 IPC+CPC Available in IPC and CPC
  • F01C 20/16 using lift valves since 2006 IPC+CPC Available in IPC and CPC