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| SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 01 | MACHINES OR ENGINES IN GENERAL (combustion engines F 02; machines for liquids F 03, F 04) |
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| 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 B 60 K 11/00; heat exchange in general, radiators F 28) |
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| Notes |
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| (1) | In this subclass, the following terms or expresions are used with the meanings indicated: |
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| – | "air" also includes other gaseous cooling fluids; |
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| – | "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; |
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| – | "air cooling" means direct air cooling and thus excludes indirect air cooling occurring in liquid cooling systems as explained under liquid cooling above; |
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| – | "cooling-air" includes directly- or indirectly-acting cooling-air. |
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| (2) | Attention is drawn to the Notes preceding class F 01, especially as regards Note (3). |
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| (3) | Cooling by lubricant is classified in subclass F 01 M when the lubrication aspect predominates, and in subclass F 01 P when the cooling aspect predominates. |
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| Air cooling; Liquid cooling (propelling cooling-air or liquid coolants F 01 P 5/00; controlling supply or circulation of coolants F 01 P 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) |
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1/ | 00 | Air cooling |
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1/ | 02 | . | Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders |
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1/ | 04 | . | Arrangements for cooling pistons |
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1/ | 06 | . | Arrangements for cooling other engine or machine parts |
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1/ | 08 | . | . | for cooling intake or exhaust valves |
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1/ | 10 | . | . | for cooling fuel injectors or sparking-plugs |
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3/ | 00 | Liquid cooling |
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3/ | 02 | . | Arrangements for cooling cylinders or cylinder heads |
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3/ | 04 | . | . | Liquid-to-air heat-exchangers combined with, or arranged on, cylinders or cylinder heads |
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3/ | 06 | . | Arrangements for cooling pistons |
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3/ | 08 | . | . | Cooling of piston exterior only, e.g. by jets |
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3/ | 10 | . | . | Cooling by flow of coolant through pistons |
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3/ | 12 | . | Arrangements for cooling other engine or machine parts |
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3/ | 14 | . | . | for cooling intake or exhaust valves |
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3/ | 16 | . | . | for cooling fuel injectors or sparking-plugs |
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3/ | 18 | . | Arrangement or mounting of liquid-to-air heat-exchangers (such arrangements on cylinders or cylinder heads F 01 P 3/04; relative to vehicles B 60 K 11/04) |
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3/ | 20 | . | Cooling circuits not specific to a single part of engine or machine (F 01 P 3/22 takes precedence) |
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3/ | 22 | . | characterised by evaporation and condensation of coolant in closed cycles (other cooling by evaporation F 01 P 9/02); characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point |
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| Pumping cooling-air or liquid coolants; Controlling circulation or supply of coolants |
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5/ | 00 | Pumping cooling-air or liquid coolants (controlling circulation or supply of coolants by influencing drive of pumps F 01 P 7/00) |
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5/ | 02 | . | Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers |
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5/ | 04 | . | . | Pump-driving arrangements |
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5/ | 06 | . | . | Guiding or ducting air to or from ducted fans |
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5/ | 08 | . | . | Use of engine exhaust gases for pumping cooling-air |
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5/ | 10 | . | Pumping liquid coolant; Arrangements of coolant pumps |
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5/ | 12 | . | . | Pump-driving arrangements |
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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 |
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7/ | 00 | Controlling of coolant flow |
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7/ | 02 | . | the coolant being cooling-air |
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7/ | 04 | . | . | by varying pump speed, e.g. by changing pump-drive gear ratio |
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7/ | 06 | . | . | by varying blade pitch |
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7/ | 08 | . | . | by cutting in or out of pumps |
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7/ | 10 | . | . | by throttling amount of air flowing through liquid-to-air heat-exchangers |
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7/ | 12 | . | . | . | by thermostatic control |
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7/ | 14 | . | the coolant being liquid |
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7/ | 16 | . | . | by thermostatic control |
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9/ | 00 | Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F 01 P 1/00 to F 01 P 7/00 (profiting from waste heat of combustion-engine cooling F 02 G 5/00) |
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9/ | 02 | . | Cooling by evaporation, e.g. by spraying water on to cylinders (evaporation and condensation of liquid coolant in closed cycles F 01 P 3/22) |
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9/ | 04 | . | by simultaneous or alternative use of direct air cooling and liquid cooling (F 01 P 9/02 takes precedence) |
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9/ | 06 | . | by use of refrigerating apparatus, e.g. of compressor or absorber type |
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11/ | 00 | Component parts, details, or accessories, not provided for in, or of interest apart from, groups F 01 P 1/00 to F 01 P 9/00 |
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11/ | 02 | . | Liquid-coolant overflow, venting, or draining devices (automatic draining during freezing conditions F 01 P 11/20) |
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11/ | 04 | . | Arrangements of liquid pipes or hoses |
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11/ | 06 | . | Cleaning (in general B 08 B); Combating corrosion (in general C 23 F) |
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11/ | 08 | . | Arrangements of lubricant coolers (in lubrication apparatus F 01 M) |
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11/ | 10 | . | Guiding or ducting cooling-air to or from liquid-to-air heat-exchangers |
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11/ | 12 | . | Filtering, cooling, or silencing cooling-air |
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11/ | 14 | . | Indicating devices; Other safety devices |
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11/ | 16 | . | . | concerning coolant temperature (F 01 P 11/20 takes precedence) |
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11/ | 18 | . | . | concerning coolant pressure, coolant flow, or liquid-coolant level |
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11/ | 20 | . | . | concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather |
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