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IPC entry: F02B 25/04 2-dot subgroup [Version 2024.01 (current), Language EN - English]

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DEKLA groups

Symbol		Title
A		HUMAN NECESSITIES
B		PERFORMING OPERATIONS; TRANSPORTING
C		CHEMISTRY; METALLURGY
D		TEXTILES; PAPER
E		FIXED CONSTRUCTIONS
F		MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01		ENGINES OR PUMPS
F01		MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F02		COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02B		INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
F02B 1/00		Engines characterised by the working fluid to be compressed or characterised by the type of ignition
F02B 1/00		Engines characterised by fuel-air mixture compression (characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B 11/00) [1, 2006.01]
F02B 3/00		Engines characterised by air compression and subsequent fuel addition (characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B 11/00) [1, 2006.01]
F02B 5/00		Engines characterised by positive ignition (engines characterised by fuel-air mixture compression with positive ignition F02B 1/02; engines characterised by air compression and subsequent fuel addition with positive ignition F02B 3/02; with non-timed positive ignition F02B 9/06; characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B 11/00) [1, 2006.01]
F02B 7/00		Engines characterised by the fuel-air charge being ignited by compression ignition of an additional fuel (characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B 11/00) [1, 2006.01]
F02B 9/00		Engines characterised by other types of ignition (characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition F02B 11/00) [1, 2006.01]
F02B 11/00		Engines characterised by both fuel-air mixture compression and air compression, or characterised by both positive ignition and compression ignition, e.g. in different cylinders [1, 2006.01]
F02B 13/00		Engines characterised by the method of introducing liquid fuel into cylinders
F02B 13/00		Engines characterised by the introduction of liquid fuel into cylinders by use of auxiliary fluid [1, 2006.01]
F02B 15/00		Engines characterised by the method of introducing liquid fuel into cylinders and not otherwise provided for [1, 2006.01]
F02B 17/00
F02B 17/00		Engines characterised by means for effecting stratification of charge in cylinders [1, 2006.01]
F02B 19/00		Engines characterised by precombustion chambers or air-storage chambers, or characterised by special shape or construction of combustion chambers to improve operation
F02B 19/00		Engines characterised by precombustion chambers [1, 2006.01]
F02B 21/00		Engines characterised by air-storage chambers [1, 2006.01]
F02B 23/00		Other engines characterised by special shape or construction of combustion chambers to improve operation (engines with incandescent chambers F02B 9/08) [1, 2006.01]
F02B 25/00		Engines characterised by provision for charging or scavenging
F02B 25/00		Engines characterised by using fresh charge for scavenging cylinders [1, 2006.01]
F02B 25/02		. using unidirectional scavenging [1, 2006.01]
F02B 25/04		. . Engines having ports both in cylinder head and in cylinder wall near bottom of piston stroke [1, 2006.01]
F02B 25/06		. . . the cylinder-head ports being controlled by working pistons, e.g. by sleeve-shaped extensions thereof [1, 2006.01]
F02B 25/08		. . Engines with oppositely-moving reciprocating working pistons [1, 2006.01]
F02B 25/10		. . . with one piston having a smaller diameter or shorter stroke than the other [1, 2006.01]
F02B 25/12		. . Engines with U-shaped cylinders, having ports in each arm [1, 2006.01]
F02B 25/14		. using reverse-flow scavenging, e.g. with both inlet and outlet ports arranged near bottom of piston stroke [1, 2006.01]
F02B 25/16		. . the charge flowing upward essentially along cylinder wall opposite the inlet ports [1, 2006.01]
F02B 25/18		. . the charge flowing upward essentially along cylinder wall adjacent the inlet ports, e.g. by means of deflection rib on piston [1, 2006.01]
F02B 25/20		. Means for reducing the mixing of charge and combustion residues or for preventing escape of fresh charge through outlet ports, not provided for in, or of interest apart from, groups F02B 25/02-F02B 25/18 [1, 2006.01]
F02B 25/22		. . by forming air cushion between charge and combustion residues [1, 2006.01]
F02B 25/24		. . Inlet or outlet openings being timed asymmetrically relative to bottom dead-centre [1, 2006.01]
F02B 25/26		. Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B 25/02-F02B 25/24 (internal-combustion aspects of rotary engines F02B 57/00) [1, 2006.01]
F02B 25/28		. . with V-, fan-, or star-arrangement of cylinders [1, 2006.01]
F02B 27/00		Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues [1, 2006.01]
F02B 29/00		Engines characterised by provision for charging or scavenging not provided for in groups F02B 25/00, F02B 27/00 or F02B 33/00-F02B 39/00; Details thereof [1, 2006.01]
F02B 31/00
F02B 31/00		Modifying induction systems for imparting a rotation to the charge in the cylinder (air intakes or induction systems for internal-combustion engines F02M 35/10) [1, 2006.01]
F02B 33/00		Engines characterised by provision of driven charging or scavenging pumps
F02B 33/00		Engines characterised by provision of pumps for charging or scavenging [1, 2006.01]
F02B 35/00		Engines characterised by provision of pumps for sucking combustion residues from cylinders [1, 2006.01]
F02B 37/00		Engines characterised by provision of pumps driven at least for part of the time by exhaust [1, 2006.01]
F02B 39/00		Component parts, details, or accessories relating to driven charging or scavenging pumps, not provided for in groups F02B 33/00-F02B 37/00 [1, 2006.01]
F02B 41/00
F02B 41/00		Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power [1, 2006.01]
F02B 43/00		Engines operating on non-liquid fuels; Plants including such engines, i.e. combinations of the engine with fuel-generating apparatus
F02B 43/00		Engines characterised by operating on gaseous fuels; Plants including such engines (engines characterised by the gas-air charge being ignited by compression ignition of an additional fuel F02B 7/06; engines convertible from gas to other fuel consumption F02B 69/04) [1, 2006.01]
F02B 45/00		Engines characterised by operating on non-liquid fuels other than gas; Plants including such engines (plants involving generation of gaseous fuel from solid fuel F02B 43/08; engines convertible from gas to other fuel consumption F02B 69/04) [1, 2006.01]
F02B 47/00		Methods of operating engines involving specific pre-treating of, or adding specific substances to, combustion air, fuel or fuel-air mixture of the engines, and not otherwise provided for
F02B 47/00		Methods of operating engines involving adding non-fuel substances or anti-knock agents to combustion air, fuel, or fuel-air mixtures of engines [1, 2006.01]
F02B 49/00		Methods of operating air-compressing compression-ignition engines involving introduction of small quantities of fuel in the form of a fine mist into the air in the engine's intake [1, 2006.01]
F02B 51/00		Other methods of operating engines involving pre-treating of, or adding substances to, combustion air, fuel, or fuel-air mixture of the engines [1, 2006.01]
F02B 53/00		Internal-combustion aspects of rotary-piston or oscillating-piston engines
F02B 53/00		Internal-combustion aspects of rotary-piston or oscillating-piston engines (internal-combustion aspects of rotary pistons or outer members for co-operation therewith F02B 55/00) [1, 2006.01]
F02B 55/00		Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons [1, 2006.01]
F02B 57/00		Internal-combustion aspects of reciprocating-piston engines with movable cylinders
F02B 57/00		Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons [1, 2006.01]
F02B 59/00		Internal-combustion aspects of other reciprocating-piston engines with movable, e.g. oscillating, cylinders (with yieldable walls F02B 75/38) [1, 2006.01]
F02B 61/00		Adaptations of engines for special use; Combinations of engines with devices other than engine parts or auxiliaries
F02B 61/00		Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing (the engine torque being divided by a differential gear for driving a scavenging or charging pump and the engine output shaft F02B 39/06; adaptations or combinations of rotary-piston or oscillating-piston engines F02B 53/14) [1, 2006.01]
F02B 63/00		Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices (of rotary-piston or oscillating-piston engines F02B 53/14) [1, 2006.01]
F02B 65/00		Adaptations of engines for special uses not provided for in groups F02B 61/00 or F02B 63/00; Combinations of engines with other devices, e.g. with non-driven apparatus (of rotary-piston or oscillating-piston engines F02B 53/14; combinations of prime-movers consisting of electric motors and internal combustion engines for mutual or common propulsion B60K 6/20) [1, 2006.01]
F02B 67/00		Engines with pertinent characteristics other than those provided for in, or of interest apart from, preceding main groups
F02B 67/00		Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for [1, 2006.01]
F02B 69/00		Internal-combustion engines convertible into other combustion-engine type, not provided for in group F02B 11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types [1, 2006.01]
F02B 71/00		Free-piston engines; Engines without rotary main shaft [1, 2006.01]
F02B 73/00		Combinations of two or more engines, not otherwise provided for [1, 2006.01]
F02B 75/00		Other engines, e.g. single-cylinder engines [1, 2006.01]
F02B 77/00		Component parts, details, or accessories, not otherwise provided for [1, 2006.01]
F02B 79/00		Running-in of internal-combustion engines (lubrication thereof F01M 7/00) [1, 2006.01]
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; combustion apparatus in which combustion takes place in a fluidised bed of fuel or other particles F23C 10/00; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B 11/00)
F02D		CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K 31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) [4, 2006.01]
F02F		CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES [2]
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
F02K		JET-PROPULSION PLANTS (arrangement or mounting of jet-propulsion plants in land vehicles or vehicles in general B60K; arrangement or mounting of jet-propulsion plants in waterborne vessels B63H; controlling aircraft attitude, flight direction or altitude by jet reaction B64C 15/00, B64U 50/10; arrangement or mounting of jet-propulsion plants in aircraft B64D 27/00, B64U 50/10; plants characterised by the power of the working fluid being divided between jet propulsion and another form of propulsion, e.g. propeller, F02B, F02C; features of jet-propulsion plants common to gas-turbine plants, air intakes or fuel supply control of air-breathing jet-propulsion plants F02C)
F02M		SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
F02N		STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
F02P		IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES (specially adapted for rotary-piston or oscillating-piston engines F02B 53/12; ignition of combustion apparatus in general, glowing plugs F23Q; measuring of physical variables in general G01; controlling in general G05; data processing in general G06; electrical components in general, see section H; sparking plugs H01T)
F03		MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
F04		POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F15		ENGINEERING IN GENERAL
F15		FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
F16		ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F17		STORING OR DISTRIBUTING GASES OR LIQUIDS
F21		LIGHTING; HEATING
F21		LIGHTING
F22		STEAM GENERATION
F23		COMBUSTION APPARATUS; COMBUSTION PROCESSES
F24		HEATING; RANGES; VENTILATING
F25		REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
F26		DRYING
F27		FURNACES; KILNS, OVENS OR RETORTS [4]
F28		HEAT EXCHANGE IN GENERAL
F41		WEAPONS; BLASTING
F41		WEAPONS
F42		AMMUNITION; BLASTING
F99		SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
G		PHYSICS
H		ELECTRICITY

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