| 1/00 | Air cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) |
| 1/02 | Air cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders |
| 1/04 | Air cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling pistons |
| 1/06 | Air cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling other engine or machine parts |
| 1/08 | Air cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves |
| 1/10 | Air cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs |
| 3/00 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) |
| 3/02 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling cylinders or cylinder heads |
| 3/04 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling cylinders or cylinder heads Liquid-to-air heat-exchangers combined with, or arranged on, cylinders or cylinder heads |
| 3/06 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling pistons |
| 3/08 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling pistons Cooling of piston exterior only, e.g. by jets |
| 3/10 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling pistons Cooling by flow of coolant through pistons |
| 3/12 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling other engine or machine parts |
| 3/14 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling other engine or machine parts for cooling intake or exhaust valves |
| 3/16 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs |
| 3/18 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Arrangement or mounting of liquid-to-air heat-exchangers (such arrangements on cylinders or cylinder heads F01P 3/04; relative to vehicles B60K 11/04) |
| 3/20 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) Cooling circuits not specific to a single part of engine or machine (F01P 3/22 takes precedence) |
| 3/22 | Liquid cooling (propelling cooling-air or liquid coolants F01P 5/00; controlling supply or circulation of coolants F01P 7/00) characterised by evaporation and condensation of coolant in closed cycles (other cooling by evaporation F01P 9/02); characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point |
| 5/00 | Pumping cooling-air or liquid coolants (controlling circulation or supply of coolants by influencing drive of pumps F01P 7/00) |
| 5/02 | Pumping cooling-air or liquid coolants (controlling circulation or supply of coolants by influencing drive of pumps F01P 7/00) Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers |