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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; {cooling of gas-turbine engines F02C 7/12}; heat exchange in general, radiators F28)
Definition statement
This subclass covers:

Cooling of machines, where "machine" means a device which could equally be an engine and a pump, and not a device which is restricted to an engine or one which is restricted to a pump.

Cooling of engines, where "engine" means a device for continuously converting fluid energy into mechanical power, e.g. steam piston engines or steam turbines.

Cooling of internal combustion engines.

References relevant to classification in this subclass
This subclass does not cover:

Arrangements in connection with cooling of propulsion units in vehicles

Heat-exchange or heat-storage materials

Cooling of gas-turbine engines

Heat exchange in general, radiators

Cogeneration

Profiting from the waste heat of the exhaust gases

Cooling of machine tools

Cooling of electric machines

Informative references
Attention is drawn to the following places, which may be of interest for search:

Cooling by lubricant when the lubrication aspect predominates

Glossary of terms
In this subclass, the following terms (or expressions) are used with the meaning indicated:

Air

gaseous cooling fluids

Liquid cooling

includes also cooling where liquid is used as the heat transferring fluid between parts to be cooled and the air, e.g. using radiators

Air cooling

direct air cooling and thus excludes indirect air cooling occurring in liquid cooling systems as explained herefore

Cooling air

directly or indirectly acting air for cooling

Engine

device for continuously converting fluid energy into mechanical power. Thus, this term includes, for example, steam piston engines or steam turbines, per se, or internal-combustion piston engines, but it excludes single-stroke devices. "Engine" also includes the fluid-motive portion of a meter unless such portion is particularly adapted for use in a meter

Machine

device which could equally be an engine and a pump, and not a device which is restricted to an engine or one which is restricted to a pump

Air cooling
Definition statement
This group covers:

Air cooling of the engine parts as cylinders or cylinder heads, but also cooling of the engine room, when related to the engine cooling circuit.

Informative references
Attention is drawn to the following places, which may be of interest for search:

For the engine room cooling

Glossary of terms
In this group, the following terms (or expressions) are used with the meaning indicated:

Engine

an internal combustion engine

Liquid cooling
Definition statement
This group covers:

Arrangements for liquid cooling of engine or machine parts.

References relevant to classification in this group
This group does not cover:

Control details of the circuit

Layout of the radiator

Arrangement of the radiator in the vehicle

Piston constructional details related to cooling of the pistons

Informative references
Attention is drawn to the following places, which may be of interest for search:

EGR cooling as such

Intercooler arrangement

Heating of the vehicle cabin from the coolant as such

Profiting from waste heat of the exhaust gases

Special rules of classification within this group

Cooling circuit specific details related to cabin heater, intercooler, EGR, turbo- charger, retarder, fuel cooling, battery and hybrid vehicles are classified in F01P 3/20 and under F01P 2060/00.

Glossary of terms
In this group, the following terms (or expressions) are used with the meaning indicated:

EGR

Exhaust Gas Recirculation

Pumping cooling-air or liquid coolants (controlling circulation or supply of coolants by influencing drive of pumps F01P 7/00)
Definition statement
This group covers:

Arrangements related to water pumps and fans including their driving, as long a cooling circuit of an engine is claimed as well.

References relevant to classification in this group
This group does not cover:

Axial flow fans

Centrifugal pumps

Rotors for elastic fluids

Rotors for centrifugal pumps

Controlling circulation or supply of coolants by influencing drive of pumps

Driving the pumps using a clutch

Informative references
Attention is drawn to the following places, which may be of interest for search:

Casings

Controlling of coolant flow
Definition statement
This group covers:

Controlling of the system such that the coolant and/or an engine part has a given temperature and/or in accordance with certain engine parameters, e.g. speed, load.

References relevant to classification in this group
This group does not cover:

The layout of a thermostat, when not related to an ice

Heating of an ICE before starting by heating of the coolant

Arrangement and control of the radiator shutters related to the vehicle

Thermostat as such

Failure of thermostats

Informative references
Attention is drawn to the following places, which may be of interest for search:

Valves in general

Friction clutches in genera

Field thermostats

Cooling after the engine stop

Heating and cooling of the vehicle in general

Special rules of classification within this group

F01P 7/165 includes systems where besides the main loop and bypass-loop, other loops present, e.g. a low temperature loop.

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)
References relevant to classification in this group
This group does not cover:

Cogeneration

Profiting from the waste heat of the exhaust gases

Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P 1/00 to F01P 9/00
Definition statement
This group covers:

Venting, overflow, deaeration, filling of the circuit, expansion reservoirs, reservoir caps, draining and purging, indicating and safety devices, filtration and silencing of the cooling air and also regenerative heat accumulators.

References relevant to classification in this group
This group does not cover:

Arrangement of the radiator in the vehicle

Informative references
Attention is drawn to the following places, which may be of interest for search:

Using heat accumulators

Special rules of classification within this group

When the deaeration devices, venting devices are mounted on the expansion reservoir they are classified in F01P 11/029.

When the deaeration devices, venting devices are mounted on the closure caps they are classified in F01P 11/0204.

This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013