|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES AND PUMPS

|  | F01 |
MACHINES OR ENGINES IN GENERAL (combustion engines Fulltext... Hierarchy... Expanded...F02; machines for liquids Fulltext... Hierarchy... Expanded...F03, Fulltext... Hierarchy... Expanded...F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES

|  | F01P |
COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (heat exchange in general, radiators Fulltext... Hierarchy... Expanded...F28)

|  | F01P |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01, especially as regards Note 2 (b). Cooling by lubricant should be classified in sub-class Fulltext... Hierarchy... Expanded...F01M when the lubrication aspect predominates, and in sub-class Fulltext... Hierarchy... Expanded...F01P when the cooling aspect predominates. In this sub-class, the following terms are used with the meanings indicated: "Air" includes other gaseous cooling fluids. "Liquid cooling" also embraces cooling where liquid is used as the heat-transferring fluid between parts to be cooled and the air, e.g. using radiators. "Air cooling" means direct air cooling and thus excludes indirect air cooling occurring in liquid cooling systems as explained under (b). "Cooling-air" embraces directly- or indirectly-acting cooling-air.

|  | F01P 1/00 - F01P 3/00 |
Air cooling; Liquid cooling (propelling cooling-air or liquid coolants Fulltext... Hierarchy... Expanded...F01P 5/00; controlling supply or circulation of coolants Fulltext... Hierarchy... Expanded...F01P 7/00; cylinders, pistons, valves, fuel injectors, sparking-plugs, or other engine or machine parts per se, modified to facilitate cooling, see the relevant classes for such parts)

|  | F01P 1/00 |
Air cooling

|  | F01P 1/02 |
· | Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders

|  | F01P 1/04 |
· | Arrangements for cooling pistons

|  | F01P 1/06 |
· | Arrangements for cooling other engine or machine parts

|  | F01P 1/08 |
· · | for cooling intake or exhaust valves

|  | F01P 1/10 |
· · | for cooling fuel injectors or sparking-plugs

|  | F01P 3/00 |
Liquid cooling

|  | F01P 3/02 |
· | Arrangements for cooling cylinders or cylinder heads

|  | F01P 3/04 |
· · | Liquid-to-air heat-exchangers combined with, or arranged on, cylinders or cylinder heads

|  | F01P 3/06 |
· | Arrangements for cooling pistons

|  | F01P 3/08 |
· · | Cooling of piston exterior only, e.g. by jets

|  | F01P 3/10 |
· · | Cooling by flow of coolant through pistons

|  | F01P 3/12 |
· | Arrangements for cooling other engine or machine parts

|  | F01P 3/14 |
· · | for cooling intake or exhaust valves

|  | F01P 3/16 |
· · | for cooling fuel injectors or sparking-plugs

|  | F01P 3/18 |
· | Arrangement or mounting of liquid-to-air heat-exchangers (such arrangements on cylinders or cylinder heads Fulltext... Hierarchy... Expanded...F01P 3/04; relative to vehicles Fulltext... Hierarchy... Expanded...B60K 11/04)

|  | F01P 3/20 |
· | Cooling circuits not specific to a single part of engine or machine (Fulltext... Hierarchy... Expanded...F01P 3/22 takes precedence)

|  | F01P 3/22 |
· | characterised by evaporation and condensation of coolant in closed cycles (other cooling by evaporation Fulltext... Hierarchy... Expanded...F01P 9/02); characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point

|  | F01P 5/00 - F01P 7/00 |
Pumping cooling-air or liquid coolants; Controlling circulation or supply of coolants

|  | F01P 5/00 |
Pumping cooling-air or liquid coolants (controlling circulation or supply of coolants by influencing drive of pumps Fulltext... Hierarchy... Expanded...F01P 7/00)

|  | F01P 5/02 |
· | Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers

|  | F01P 5/04 |
· · | Pump-driving arrangements

|  | F01P 5/06 |
· · | Guiding or ducting air to or from ducted fans

|  | F01P 5/08 |
· · | Use of engine exhaust gases for pumping cooling-air

|  | F01P 5/10 |
· | Pumping liquid coolant; Arrangements of coolant pumps

|  | F01P 5/12 |
· · | Pump-driving arrangements

|  | F01P 5/14 |
· | Safety means against, or active at, failure of coolant-pump drives, e.g. shutting engine down; Means for indicating functioning of coolant pumps

|  | F01P 7/00 |
Controlling of coolant flow

|  | F01P 7/02 |
· | the coolant being cooling-air

|  | F01P 7/04 |
· · | by varying pump speed, e.g. by changing pump-drive gear ratio

|  | F01P 7/06 |
· · | by varying blade pitch

|  | F01P 7/08 |
· · | by cutting in or out of pumps

|  | F01P 7/10 |
· · | by throttling amount of air flowing through liquid-to-air heat-exchangers

|  | F01P 7/12 |
· · · | by thermostatic control

|  | F01P 7/14 |
· | the coolant being liquid

|  | F01P 7/16 |
· · | by thermostatic control

|  | F01P 9/00 |
Cooling having pertinent characteristics not provided for in, or of interest apart from, groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01P 1/00-F01P 7/00 (profiting from waste heat of combustion-engine cooling Fulltext... Hierarchy... Expanded...F02G 5/00)

|  | F01P 9/02 |
· | Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles Fulltext... Hierarchy... Expanded...F01P 3/22)

|  | F01P 9/04 |
· | by simultaneous or alternative use of direct air cooling and liquid cooling (Fulltext... Hierarchy... Expanded...F01P 9/02 takes precedence)

|  | F01P 9/06 |
· | by use of refrigerating apparatus, e.g. of compressor or absorber type

|  | F01P 11/00 |
Component parts, details, or accessories, not provided for in, or of interest apart from, groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01P 1/00-F01P 9/00

|  | F01P 11/02 |
· | Liquid-coolant overflow, venting, or draining devices (automatic draining during freezing conditions Fulltext... Hierarchy... Expanded...F01P 11/20)

|  | F01P 11/04 |
· | Arrangements of liquid pipes or hoses

|  | F01P 11/06 |
· | Cleaning (in general Fulltext... Hierarchy... Expanded...B08B); Combating corrosion (in general Fulltext... Hierarchy... Expanded...C23F)

|  | F01P 11/08 |
· | Arrangements of lubricant coolers (in lubrication apparatus Fulltext... Hierarchy... Expanded...F01M)

|  | F01P 11/10 |
· | Guiding or ducting cooling-air to or from liquid-to-air heat-exchangers

|  | F01P 11/12 |
· | Filtering, cooling, or silencing cooling-air

|  | F01P 11/14 |
· | Indicating devices; Other safety devices

|  | F01P 11/16 |
· · | concerning coolant temperature (Fulltext... Hierarchy... Expanded...F01P 11/20 takes precedence)

|  | F01P 11/18 |
· · | concerning coolant pressure, coolant flow, or liquid-coolant level

|  | F01P 11/20 |
· · | concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather