IPC 7 English version F01P !A-F01P 11/20

F01P-F01P01120

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 01

MACHINES OR ENGINES IN GENERAL (combustion engines F02; machines for liquids F03, F04); ENGINE PLANTS IN GENERAL; STEAM ENGINES

F 01 P

COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K 11/00; heat-transfer, heat-exchange or heat-storage materials C09K 5/00; heat-exchange in general, radiators F28)

Notes

(1)

In this subclass, the following terms or expressions are used with the meanings indicated:

–

"air" also includes other gaseous cooling fluids;

–

"liquid cooling" also includes 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 liquid cooling above;

–

"cooling-air" includes directly- or indirectly-acting cooling-air.

(2)

Attention is drawn to the Notes preceding class F01, especially as regards Note (3).

(3)

Cooling by lubricant is classified in subclass F01M when the lubrication aspect predominates, and in subclass F01P when the cooling aspect predominates.

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

Air cooling

Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders

Arrangements for cooling pistons

Arrangements for cooling other engine or machine parts

for cooling intake or exhaust valves

for cooling fuel injectors or sparking-plugs

Liquid cooling

Arrangements for cooling cylinders or cylinder heads

Liquid-to-air heat-exchangers combined with, or arranged on, cylinders or cylinder heads

Arrangements for cooling pistons

Cooling of piston exterior only, e.g. by jets

Cooling by flow of coolant through pistons

Arrangements for cooling other engine or machine parts

for cooling intake or exhaust valves

for cooling fuel injectors or sparking-plugs

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)

Cooling circuits not specific to a single part of engine or machine (F01P 3/22 takes precedence)

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

Pumping cooling-air or liquid coolants; Controlling circulation or supply of coolants

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

Pump-driving arrangements

Guiding or ducting air to or from ducted fans

Use of engine exhaust gases for pumping cooling-air

Pumping liquid coolant; Arrangements of coolant pumps

Pump-driving arrangements

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

Controlling of coolant flow

the coolant being cooling-air

by varying pump speed, e.g. by changing pump-drive gear ratio

by varying blade pitch

by cutting in or out of pumps

by throttling amount of air flowing through liquid-to-air heat-exchangers

by thermostatic control

the coolant being liquid

by thermostatic control

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

Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F01P 3/22)

by simultaneous or alternative use of direct air cooling and liquid cooling (F01P 9/02 takes precedence)

by use of refrigerating apparatus, e.g. of compressor or absorber type

11/

Component parts, details, or accessories, not provided for in, or of interest apart from, groups F01P 1/00 to F01P 9/00

11/

Liquid-coolant overflow, venting, or draining devices (automatic draining during freezing conditions F01P 11/20)

11/

Arrangements of liquid pipes or hoses

11/

Cleaning (in general B08B); Combating corrosion (in general C23F)

11/

Arrangements of lubricant coolers (in lubrication apparatus F01M)

11/

Guiding or ducting cooling-air to or from liquid-to-air heat-exchangers

11/

Filtering, cooling, or silencing cooling-air

11/

Indicating devices; Other safety devices

11/

concerning coolant temperature (F01P 11/20 takes precedence)

11/

concerning coolant pressure, coolant flow, or liquid-coolant level

11/

concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather