INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)

Introduced: September 1968

Description

F02B covers internal-combustion piston engines operating on the four-stroke or two-stroke cycle, including spark-ignition and compression-ignition (diesel) engines, as well as combustion engines in general. The class encompasses engine design, construction, and operational features such as cylinder arrangements, fuel injection systems, ignition mechanisms, supercharging, and cooling systems. Excluded are specific fuel supply systems (covered in F02M), engine control and fuel metering (F02D), and non-piston combustion engines like turbines (F02C).

Title

Titles differ between systems:

IPC: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL

CPC: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)

Full Title

Full titles differ between systems:

IPC:

INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL

CPC:

INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)

Of 46 combined children, 40 exist in both systems.

6 codes are CPC-only extensions.

Note: 6 CPC extensions are marked as secondary classification only.

21 shared codes have differing titles between IPC and CPC.

Child Classifications

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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 F02B11/00) IPC+CPC Available in IPC and CPC
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 IPC+CPC Available in IPC and CPC
F02B 13/00 Engines characterised by the introduction of liquid fuel into cylinders by use of auxiliary fluid IPC+CPC Available in IPC and CPC
F02B 15/00 Engines characterised by the method of introducing liquid fuel into cylinders and not otherwise provided for IPC+CPC Available in IPC and CPC
F02B 17/00 Engines characterised by means for effecting stratification of charge in cylinders +1 CPC IPC+CPC Available in IPC and CPC
F02B 19/00 Engines characterised by precombustion chambers +2 CPC IPC+CPC Available in IPC and CPC
F02B 21/00 Engines characterised by air-storage chambers IPC+CPC Available in IPC and CPC
F02B 2201/00 Fuels 2nd only +3 CPC CPC only CPC only
F02B 2275/00 Other engines, components or details, not provided for in other groups of this subclass 2nd only +22 CPC CPC only CPC only
F02B 23/00 Other engines characterised by special shape or construction of combustion chambers to improve operation (engines with incandescent chambers F02B9/08) IPC+CPC Available in IPC and CPC
F02B 25/00 Engines characterised by using fresh charge for scavenging cylinders IPC+CPC Available in IPC and CPC
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 +4 CPC IPC+CPC Available in IPC and CPC
F02B 2700/00 Measures relating to the combustion process without indication of the kind of fuel or with more than one fuel 2nd only +2 CPC CPC only CPC only
F02B 2710/00 Gas engines 2nd only +2 CPC CPC only CPC only
F02B 2720/00 Engines with liquid fuel 2nd only +11 CPC CPC only CPC only
F02B 2730/00 Internal-combustion engines with pistons rotating or oscillating with relation to the housing 2nd only +5 CPC CPC only CPC only
F02B 29/00 Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof IPC+CPC Available in IPC and CPC
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 F02B11/00) IPC+CPC Available in IPC and CPC
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 F02M35/10) IPC+CPC Available in IPC and CPC
F02B 33/00 Engines characterised by provision of pumps for charging or scavenging IPC+CPC Available in IPC and CPC