WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F02G　HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS (steam engine plants, special vapour plants, plants operating on either hot gas or combustion-product gases together with other fluid F01K; gas-turbine plants F02C; jet-propulsion plants F02K); USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR

F02G 1/00 Hot gas positive-displacement engine plants (positive-displacement engine plants characterised by the working gas being generated by combustion in the plant F02G 3/00)

F02G 1/02 ・of open-cycle type

F02G 1/04 ・of closed-cycle type

F02G 1/043 ・・the engine being operated by expansion and contraction of a mass of working gas which is heated and colled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engine

F02G 1/0435 ・・・{the engine being of the free piston type}

F02G 1/044 ・・・having at least two working members, e.g. pistons, delivering power output

F02G 1/0445 ・・・・{Engine plants with combined cycles, e.g. Vuilleumier}

F02G 1/045 ・・・Controlling

F02G 1/047 ・・・・by varying the heating or cooling

F02G 1/05 ・・・・by varying the rate of flow or quantity of the working gas

F02G 1/053 ・・・Component parts or details

F02G 1/0535 ・・・・{Seals or sealing arrangements}

F02G 1/055 ・・・・Heaters or coolers

F02G 1/057 ・・・・Regenerators

F02G 1/06 ・Controlling

F02G 3/00 Positive-displacement engine plants characterised by the working gas being generated by combustion in the plant

F02G 3/02 ・with reciprocating-piston engines

F02G 5/00 Profiting from waste heat of combustion engines, not otherwise provided for

F02G 5/02 ・Profiting from waste heat of exhaust gases

F02G 5/04 ・・in combination with other waste heat from combustion engines

F02G 2242/00 Ericsson-type engines having open regenerative cycles controlled by valves

F02G 2242/02 ・Displacer-type engines

F02G 2242/04 ・・having constant working volume

F02G 2242/06 ・・・with external drive displacers

F02G 2242/08 ・・・・having gas actuated valves, e.g. "Bush engines"

F02G 2242/10 ・・・・having mechanically actuated valves, e.g. "Gifford" or "McMahon engines"

F02G 2242/30 ・・having variable working volume

F02G 2242/32 ・・・Regenerative displacers with independent pistons

F02G 2242/40 ・Piston-type engines

F02G 2242/42 ・・having a single piston regenerative displacer attached to the piston, e.g. "Gifford-McMahon" engines

F02G 2242/44 ・・having two pistons and reverse flow regenerators

F02G 2243/00 Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by volume changes

F02G 2243/02 ・having pistons and displacers in the same cylinder

F02G 2243/04 ・・Crank-connecting-rod drives

F02G 2243/06 ・・・Regenerative displacers

F02G 2243/08 ・・・External regenerators, e.g. "Rankine Napier" engines

F02G 2243/20 ・・each having a single free piston, e.g. "Beale engines"

F02G 2243/202 ・・・resonant

F02G 2243/204 ・・・non-resonant

F02G 2243/206 ・・・externally excited

F02G 2243/22 ・・with oscillating cylinders

F02G 2243/24 ・・with free displacers

F02G 2243/30 ・having their pistons and displacers each in separate cylinders (two-piston machines R02G 44/00)

F02G 2243/32 ・・Regenerative displacers having parallel cylinder, e.g. "Lauberau" or "Schwartzkopff" engines

F02G 2243/34 ・・Regenerative displacers having their cylinders at right angle, e.g. "Robinson" engines

F02G 2243/36 ・・with twin-expansion cylinders, e.g. "Rainbow" engines

F02G 2243/38 ・・External regenerators having parallel cylinders, e.g. "Heinrici" engines

F02G 2243/40 ・・with free displacers

F02G 2243/50 ・・having resonance tubes

F02G 2243/52 ・・・acoustic

F02G 2243/54 ・・・thermo-acoustic

F02G 2244/00 Machines having two pistons

F02G 2244/02 ・Single-acting two piston engines

F02G 2244/04 ・・of rotary cylinder type, e.g. "Finkelstein" engines

F02G 2244/06 ・・of stationary cylinder type

F02G 2244/08 ・・・having parallel cylinder, e.g. "Rider" engines

F02G 2244/10 ・・・having cylinders in V-arrangement

F02G 2244/12 ・・・having opposed pistons

F02G 2244/50 ・Double acting piston machines

F02G 2244/52 ・・having interconnecting adjacent cylinders constituting a single system, e.g. "Rinia" engines

F02G 2244/54 ・・having two-cylinder twin systems, with compression in one cylinder and expansion in the other cylinder for each of the twin systems, e.g. "Finkelstein" engines

F02G 2250/00 Special cycles or special engines

F02G 2250/03 ・Brayton cycles

F02G 2250/06 ・Beau de Rochas constant volume cycles

F02G 2250/09 ・Carnot cycles in general

F02G 2250/12 ・Malone liquid thermal cycles

F02G 2250/15 ・Sabathe mixed air cycles

F02G 2250/18 ・Vuilleumier cycles

F02G 2250/21 ・Cooke Yarborough engines

F02G 2250/24 ・Ringbom engines, the displacement of the free displacer being obtained by expansion of the heated gas and the weight of the piston

F02G 2250/27 ・Martini Stirling engines

F02G 2250/31 ・Nano or micro engines

F02G 2253/00 Seals

F02G 2253/01 ・Rotary piston seals

F02G 2253/02 ・Reciprocating piston seals

F02G 2253/03 ・Stem seals

F02G 2253/04 ・Displacer seals

F02G 2253/06 ・Bellow seals

F02G 2253/08 ・Stem with rolling membranes

F02G 2253/10 ・Piston with rolling membranes

F02G 2253/50 ・Liquid seals

F02G 2253/60 ・Sealing of the lubrication circuit

F02G 2253/80 ・Sealing of the crankcase

F02G 2254/00 Heat inputs

F02G 2254/05 ・by air

F02G 2254/10 ・by burners

F02G 2254/11 ・・Catalytic burners

F02G 2254/12 ・by ejectors

F02G 2254/15 ・by exhaust gas

F02G 2254/18 ・using deflectors, e.g. spirals

F02G 2254/20 ・using heat transfer tubes

F02G 2254/30 ・using solar radiation

F02G 2254/40 ・using heat accumulators

F02G 2254/45 ・by electric heating

F02G 2254/50 ・Dome arrangements for heat input

F02G 2254/60 ・using air preheaters

F02G 2254/70 ・by catalytic conversion, i.e. flameless oxydation

F02G 2254/90 ・by radioactivity

F02G 2255/00 Heater tubes

F02G 2255/10 ・dome shaped

F02G 2255/20 ・Heater fins

F02G 2256/00 Coolers

F02G 2256/02 ・Cooler fins

F02G 2256/04 ・Cooler tubes

F02G 2256/50 ・with coolant circulation

F02G 2257/00 Regenerators

F02G 2257/02 ・rotating

F02G 2258/00 Materials used

F02G 2258/10 ・ceramic

F02G 2258/20 ・having heat insulating properties

F02G 2258/50 ・having frictional properties

F02G 2258/80 ・having magnetic properties

F02G 2258/90 ・Processing of materials

F02G 2260/00 Recuperating heat from exhaust gases of combustion engines and heat from cooling circuits

F02G 2262/00 Recuperating heat from exhaust gases of combustion engines and heat from lubrication circuits

F02G 2270/00 Constructional features

F02G 2270/005 ・Shells, e.g. a sealed or sealing shell for a Stirling engine

F02G 2270/02 ・Pistons for reciprocating and rotating

F02G 2270/04 ・Roller assemblies connecting opposed pistons

F02G 2270/10 ・Rotary pistons

F02G 2270/15 ・Rotating cylinders

F02G 2270/20 ・Plural piston swash plates

F02G 2270/30 ・Displacer assemblies

F02G 2270/40 ・Piston assemblies

F02G 2270/42 ・Displacer drives

F02G 2270/425 ・・the displacer being driven by a four-bar mechanism, e.g. a rhombic mechanism

F02G 2270/45 ・Piston rods

F02G 2270/50 ・Crosshead guiding pistons

F02G 2270/55 ・Cylinders

F02G 2270/60 ・Counterweights for pistons

F02G 2270/70 ・Liquid pistons

F02G 2270/80 ・Engines without crankshafts

F02G 2270/85 ・Crankshafts

F02G 2270/90 ・Valves

F02G 2270/95 ・Pressurised crankcases

F02G 2275/00 Controls

F02G 2275/10 ・for vibration reduction

F02G 2275/20 ・for preventing piston over stroke

F02G 2275/30 ・for proper burning

F02G 2275/40 ・for starting

F02G 2280/00 Output delivery

F02G 2280/005 ・Medical applications, e.g. for prosthesis or artificial hearts

F02G 2280/10 ・Linear generators

F02G 2280/20 ・Rotary generators

F02G 2280/50 ・Compressors or pumps

F02G 2280/60 ・Heat pumps

F02G 2280/70 ・Clutches

F02G 2290/00 Engines characterised by the use of a particular power transfer medium, e.g. Helium