1. CPC Sections
  2. CPC Section F
  3. CPC Class F02
  4. CPC Subclass F02C
Printable version [PDF]
Version: 2024.08
Loading Scheme...
CPC
COOPERATIVE PATENT CLASSIFICATION
​​
F02C
GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B 11/00) [2024-01]
NOTES

  • This subclass covers:
    • combustion product or hot gas turbine plants;
    • internal combustion turbines or turbine plants;
    • turbine plants in which the working fluid is an unheated, pressurised gas.
  • This subclass does not cover:
    • steam turbine plants, which are covered by subclass F01K;
    • special vapour plants, which are covered by subclass F01K.
    • { combined cycle plants, which are covered by subclass F01K 23/00}
  • In this subclass, the following expression is used with the meaning indicated:
    • "gas-turbine plants" covers all the subject matter of Note (1) above and covers also features of jet-propulsion plants common to gas-turbine plants.
  • Attention is drawn to the Notes preceding class F01.
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
F02C 1/00
Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid (by the use of combustion products F02C 3/00, F02C 5/00) [2017-08]
F02C 1/002
.
{using an auxiliary fluid} [2013-01]
F02C 1/005
. .
{being recirculated} [2013-01]
F02C 1/007
.
{combination of cycles} [2013-01]
F02C 1/02
.
the working fluid being an unheated pressurised gas [2013-01]
F02C 1/04
.
the working fluid being heated indirectly {(in a fluidised-bed combustor F02C 3/205)} [2013-01]
F02C 1/05
. .
characterised by the type or source of heat, e.g. using nuclear or solar energy [2013-01]
F02C 1/06
. . .
using reheated exhaust gas (F02C 1/08 takes precedence) [2013-01]
F02C 1/08
. .
Semi-closed cycles [2013-01]
F02C 1/10
. .
Closed cycles [2013-01]
F02C 1/105
. . .
{construction; details} [2013-01]
F02C 3/00
Gas-turbine plants characterised by the use of combustion products as the working fluid (generated by intermittent combustion F02C 5/00) [2013-01]
F02C 3/02
.
using exhaust-gas pressure in a pressure exchanger to compress combustion-air (pressure exchangers per se F04F 13/00) [2013-01]
F02C 3/04
.
having a turbine driving a compressor (power transmission arrangements F02C 7/36; control of working fluid flow F02C 9/16) [2013-01]
F02C 3/045
. .
having compressor and turbine passages in a single rotor-module (F02C 3/073 takes precedence) [2013-01]
F02C 3/05
. . .
the compressor and the turbine being of the radial flow type [2013-01]
F02C 3/055
. .
the compressor being of the positive-displacement type [2013-01]
F02C 3/06
. .
the compressor comprising only axial stages (F02C 3/10 takes precedence) [2013-01]
F02C 3/062
. . .
{the turbine being of the radial-flow type} [2013-01]
F02C 3/064
. . .
{the compressor having concentric stages} [2013-01]
F02C 3/067
. . .
having counter-rotating rotors (F02C 3/073 takes precedence) [2013-01]
F02C 3/073
. . .
the compressor and turbine stages being concentric [2013-01]
F02C 3/08
. .
the compressor comprising at least one radial stage (F02C 3/10 takes precedence) [2013-01]
F02C 3/085
. . .
{the turbine being of the radial-flow type (radial-radial) (F02C 3/05 takes precedence)} [2013-01]
F02C 3/09
. . .
of the centripetal type [2013-01]
F02C 3/10
. .
with another turbine driving an output shaft but not driving the compressor [2013-01]
F02C 3/103
. . .
{the compressor being of the centrifugal type} [2013-01]
F02C 3/107
. .
with two or more rotors connected by power transmission [2013-01]
F02C 3/113
. . .
with variable power transmission between rotors [2013-01]
F02C 3/13
. .
having variable working fluid interconnections between turbines or compressors or stages of different rotors {(controlling flow ratio between different flows of multi-flow jet-propulsion plant, e.g. ducted fan F02K 3/075)} [2013-01]
F02C 3/14
.
characterised by the arrangement of the combustion chamber in the plant (combustion chambers per se F23R; F02C 3/205 takes precedence) [2013-01]
F02C 3/145
. .
{the combustion chamber being in the reverse flow-type} [2013-01]
F02C 3/16
. .
the combustion chambers being formed at least partly in the turbine rotor {or in an other rotating part of the plant} [2013-01]
F02C 3/165
. . .
{the combustion chamber contributes to the driving force by creating reactive thrust} [2013-01]
F02C 3/20
.
using a special fuel, oxidant, or dilution fluid to generate the combustion products [2013-01]
F02C 3/205
. .
{in a fluidised-bed combustor (in combination with a steam cycle see F01K 23/061; fluidised-bed apparatus in general B01J 8/18; fluidised-bed combustors in general F23C 10/00)} [2013-01]
F02C 3/22
. .
the fuel or oxidant being gaseous at standard temperature and pressure (F02C 3/28 takes precedence) [2013-01]
F02C 3/24
. .
the fuel or oxidant being liquid at standard temperature and pressure [2013-01]
F02C 3/26
. .
the fuel or oxidant being solid or pulverulent, e.g. in slurry or suspension [2013-01]
F02C 3/28
. . .
using a separate gas producer for gasifying the fuel before combustion [2013-01]
F02C 3/30
. .
Adding water, steam or other fluids {for influencing combustion, e.g. to obtain cleaner exhaust gases (F02C 7/141, F02C 7/30, F01D 21/00, F01K 21/04, F23D 11/10 take precedence)} [2013-01]
F02C 3/305
. . .
{Increasing the power, speed, torque or efficiency of a gas turbine or the thrust of a turbojet engine by injecting or adding water, steam or other fluids (F01K 21/04 takes precedence)} [2013-01]
F02C 3/32
.
Inducing air flow by fluid jet, e.g. ejector action [2013-01]
F02C 3/34
.
with recycling of part of the working fluid, i.e. semi-closed cycles with combustion products in the closed part of the cycle [2013-01]
F02C 3/36
.
Open cycles [2013-01]
F02C 3/365
. .
{a part of the compressed air being burned, the other part being heated indirectly (in a fluidised-bed combustor F02C 3/205)} [2013-01]
F02C 5/00
Gas-turbine plants characterised by the working fluid being generated by intermittent combustion [2013-01]
F02C 5/02
.
characterised by the arrangement of the combustion chamber in the chamber in the plant (combustion chambers per se F23R) [2013-01]
F02C 5/04
. .
the combustion chambers being formed at least partly in the turbine rotor [2013-01]
F02C 5/06
.
the working fluid being generated in an internal-combustion gas generated of the positive-displacement type having essentially no mechanical power output (internal-combustion engines with prolonged expansion using exhaust gas turbines F02B) [2013-01]
F02C 5/08
. .
the gas generator being of the free-piston type [2013-01]
F02C 5/10
.
the working fluid forming a resonating or oscillating gas column, i.e. the combustion chambers having no positively actuated valves, e.g. using Helmholtz effect [2013-01]
F02C 5/11
. .
using valveless combustion chambers [2013-01]
F02C 5/12
.
the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants [2013-01]
F02C 6/00
Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use [2024-01]
F02C 6/003
.
{Gas-turbine plants with heaters between turbine stages} [2013-01]
F02C 6/006
.
{Open cycle gas-turbine in which the working fluid is expanded to a pressure below the atmospheric pressure and then compressed to atmospheric pressure} [2017-05]
F02C 6/02
.
Plural gas-turbine plants having a common power output [2013-01]
F02C 6/04
.
Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F02C 6/18 takes precedence {; for a fluidised-bed combustor F02C 3/205}) [2017-08]
F02C 6/06
. .
providing compressed gas (F02C 6/10 takes precedence) [2013-01]
F02C 6/08
. . .
the gas being bled from the gas-turbine compressor [2013-01]
F02C 6/10
. .
supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant [2013-01]
F02C 6/12
. . .
Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure [2013-01]
F02C 6/14
.
Gas-turbine plants having means for storing energy, e.g. for meeting peak loads [2013-01]
F02C 6/16
. .
for storing compressed air [2013-01]
F02C 6/18
.
using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F25B 27/02; using the waste heat of a gasturbine for steam generation or in a steam cycle see F01K 23/10) [2017-08]
F02C 6/20
.
Adaptations of gas-turbine plants for driving vehicles [2013-01]
F02C 6/203
. .
{the vehicles being waterborne vessels} [2013-01]
F02C 6/206
. .
{the vehicles being airscrew driven} [2013-01]
F02C 7/00
Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C 1/00 - F02C 6/00; Air intakes for jet-propulsion plants (controlling F02C 9/00) [2016-05]
F02C 7/04
.
Air intakes for gas-turbine plants or jet-propulsion plants [2013-01]
F02C 7/042
. .
having variable geometry [2013-01]
F02C 7/045
. .
having provisions for noise suppression [2013-01]
F02C 7/047
. .
Heating to prevent icing [2013-01]
F02C 7/05
. .
having provisions for obviating the penetration of damaging objects or particles [2013-01]
F02C 7/052
. . .
with dust-separation devices [2013-01]
F02C 7/055
. . .
with intake grids, screens or guards [2013-01]
F02C 7/057
. .
Control or regulation (conjointly with fuel supply control F02C 9/50, with nozzle area control F02K 1/16) [2013-01]
F02C 7/06
.
Arrangements of bearings (bearings F16C); Lubricating ({of turbo machines F01D 25/18; of machines or} engines in general F01M) [2013-01]
F02C 7/08
.
Heating air supply before combustion, e.g. by exhaust gases [2013-01]
F02C 7/10
. .
by means of regenerative heat-exchangers [2013-01]
F02C 7/105
. . .
of the rotary type (rotary heat exchangers per se F28D) [2013-01]
F02C 7/12
.
Cooling of plants (of component parts, see the relevant subclasses, e.g. F01D; cooling of engines in general F01P) [2013-01]
F02C 7/125
. .
{by partial arc admission of the working fluid or by intermittent admission of working and cooling fluid} [2013-01]
F02C 7/14
. .
of fluids in the plant {, e.g. lubricant or fuel (F02C 7/185 takes precedence)} [2017-08]
F02C 7/141
. . .
of working fluid [2013-01]
F02C 7/143
. . . .
before or between the compressor stages [2013-01]
F02C 7/1435
. . . . .
{by water injection} [2013-01]
F02C 7/16
. .
characterised by cooling medium [2013-01]
F02C 7/18
. . .
the medium being gaseous, e.g. air {(F02C 7/125 takes precedence)} [2013-01]
F02C 7/185
. . . .
{Cooling means for reducing the temperature of the cooling air or gas} [2013-01]
F02C 7/20
.
Mounting or supporting of plant; Accommodating heat expansion or creep [2017-05]
F02C 7/22
.
Fuel supply systems [2013-01]
F02C 7/222
. .
{Fuel flow conduits, e.g. manifolds} [2013-01]
F02C 7/224
. .
Heating fuel before feeding to the burner [2013-01]
F02C 7/228
. .
Dividing fuel between various burners [2013-01]
F02C 7/232
. .
Fuel valves {(control of fuel supply by means of fuel metering valves F02C 9/263)}; Draining valves or systems (valves in general F16K) [2013-01]
F02C 7/236
. .
Fuel delivery systems comprising two or more pumps [2013-01]
F02C 7/2365
. . .
{comprising an air supply system for the atomisation of fuel} [2013-01]
F02C 7/24
.
Heat or noise insulation (air intakes having provisions for noise suppression F02C 7/045; turbine exhaust heads, chambers, or the like F01D 25/30; silencing nozzles of jet-propulsion plants F02K 1/00) [2013-01]
F02C 7/25
. .
Fire protection or prevention (in general A62) [2013-01]
F02C 7/26
.
Starting; Ignition [2013-01]
F02C 7/262
. .
Restarting after flame-out [2013-01]
F02C 7/264
. .
Ignition [2013-01]
F02C 7/266
. . .
Electric (sparking plugs H01T) [2013-01]
F02C 7/268
. .
Starting drives for the rotor {, acting directly on the rotor of the gas turbine to be started} [2017-08]
F02C 7/27
. . .
Fluid drives (turbine starters F02C 7/277) [2013-01]
F02C 7/272
. . . .
generated by cartridges [2013-01]
F02C 7/275
. . .
Mechanical drives [2013-01]
F02C 7/277
. . . .
the starter being a {separate} turbine [2013-01]
F02C 7/28
.
Arrangement of seals [2013-01]
F02C 7/30
.
Preventing corrosion {or unwanted deposits} in gas-swept spaces [2013-01]
F02C 7/32
.
Arrangement, mounting, or driving, of auxiliaries [2013-01]
F02C 7/36
.
Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user ({F02C 3/107 - F02C 3/13 and} F02C 7/32 take precedence; couplings for transmitting rotation F16D; gearing in general F16H) [2016-05]
F02C 9/00
Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants (controlling air intakes F02C 7/057; controlling turbines F01D; controlling compressors F04D 27/00; controlling in general G05) [2013-01]
F02C 9/16
.
Control of working fluid flow (F02C 9/48 takes precedence; control of air-intake flow F02C 7/057) [2013-01]
F02C 9/18
. .
by bleeding, bypassing or acting on variable working fluid interconnections between turbines or compressors or their stages {(F02C 3/113 takes precedence)} [2013-01]
F02C 9/20
. .
by throttling; by adjusting vanes [2013-01]
F02C 9/22
. . .
by adjusting turbine vanes [2013-01]
F02C 9/24
. .
Control of the pressure level in closed cycles [2013-01]
F02C 9/26
.
Control of fuel supply (F02C 9/48 takes precedence; fuel valves F02C 7/232) [2013-01]
F02C 9/263
. .
{by means of fuel metering valves} [2013-01]
F02C 9/266
. .
{specially adapted for gas turbines with intermittent fuel injection} [2013-01]
F02C 9/28
. .
Regulating systems responsive to plant or ambient parameters, e.g. temperature, pressure, rotor speed (F02C 9/30 - F02C 9/38, F02C 9/44 take precedence) [2016-05]
F02C 9/285
. . .
{Mechanical command devices linked to the throttle lever} [2013-01]
F02C 9/30
. .
characterised by variable fuel pump output [2013-01]
F02C 9/32
. .
characterised by throttling of fuel (F02C 9/38 takes precedence) [2013-01]
F02C 9/34
. . .
Joint control of separate flows to main and auxiliary burners [2013-01]
F02C 9/36
. .
characterised by returning of fuel to sump (F02C 9/38 takes precedence) [2013-01]
F02C 9/38
. .
characterised by throttling and returning of fuel to sump [2013-01]
F02C 9/40
. .
specially adapted to the use of a special fuel or a plurality of fuels [2013-01]
F02C 9/42
. .
specially adapted for the control of two or more plants simultaneously [2013-01]
F02C 9/44
. .
responsive to the speed of aircraft, e.g. Mach number control, optimisation of fuel consumption [2013-01]
F02C 9/46
. .
Emergency fuel control [2013-01]
F02C 9/48
.
Control of fuel supply conjointly with another control of the plant (with nozzle section control F02K 1/17) [2013-01]
F02C 9/50
. .
with control of working fluid flow [2013-01]
F02C 9/52
. . .
by bleeding or by-passing the working fluid [2013-01]
F02C 9/54
. . .
by throttling the working fluid, by adjusting vanes [2013-01]
F02C 9/56
. .
with power transmission control [2013-01]
F02C 9/58
. . .
with control of a variable-pitch propeller [2013-01]