Liquid cooling

Introduced: September 1968

Of 10 combined children, 6 exist in both systems.

4 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

3 shared codes have differing titles between IPC and CPC.

Child Classifications

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F01P 2003/001 2nd only +1 CPC CPC only CPC only
F01P 2003/005 2nd only CPC only CPC only
F01P 2003/006 2nd only CPC only CPC only
F01P 2003/008 2nd only CPC only CPC only
F01P 3/02 Arrangements for cooling cylinders or cylinder heads +4 CPC IPC+CPC Available in IPC and CPC
F01P 3/06 Arrangements for cooling pistons IPC+CPC Available in IPC and CPC
F01P 3/12 Arrangements for cooling other engine or machine parts IPC+CPC Available in IPC and CPC
F01P 3/18 Arrangements or mounting of liquid-to-air heat-exchangers (such arrangements on cylinders or cylinder heads F01P3/04; relative to vehicles B60K11/04) +3 CPC IPC+CPC Available in IPC and CPC
F01P 3/20 Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) +2 CPC IPC+CPC Available in IPC and CPC
F01P 3/22 characterised by evaporation and condensation of coolant in closed cycles (other cooling by evaporation F01P9/02); characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point +6 CPC IPC+CPC Available in IPC and CPC