Descriptions for F02B and notes/indexes are displayed on this screen.
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INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
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Note(s)
In this subclass, the following terms or expression are used with the meanings indicated:"positive ignition" means ignition by a source external to the working fluid, e.g. by spark or incandescent source;"charging" means forcing air or fuel-air mixture into engine cylinders, and thus includes supercharging;"scavenging" means forcing the combustion residues from the cylinders other than by movement of the working pistons, and thus includes tuned exhaust systems. Attention is drawn to the Notes preceding class F01, especially as regards Note (1).Engines with specified cycles or number of cylinders are classified in group F02B 75/02 or F02B 75/16, unless other classifying features predominate.
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Subclass indexes
ENGINES USING FLUID FUEL | Characterised by fluid to be compressed or by ignition | 1/00-11/00 | Characterised by the combustion, inlet or charging, or evacuation | combustion | chambers for: precombustion; air storage; combustion | 19/00; 21/00; 23/00 | charge: stratification; rotation | 17/00; 31/00 | introduction of fuel | 13/00, 15/00, 49/00 | inlet or charging, or scavenging | general characteristics; details | 25/00-29/00; 29/00 | pumps; details | 33/00-37/00; 39/00 | Special means for improving efficiency | 41/00 | ENGINES USING NON-LIQUID FUEL, THEIR COMBINATIONS WITH FUEL-GENERATING APPARATUS | 43/00, 45/00 | OPERATION CHARACTERISED BY TREATMENT OR PRETREATMENT OF FUEL, AIR, OR MIXTURE | 7/00, 47/00, 49/00, 51/00 | SPECIAL FORMS OR APPLICATIONS | Kinds of engine | kinds of piston: rotary, oscillating; reciprocating in rotary engines or movable cylinders; free-piston or without rotating main shaft | 53/00, 55/00; 57/00, 59/00; 71/00 | convertible or with interchangeable parts | 69/00 | with special auxiliary apparatus | 67/00 | other kinds; component parts, details, or accessories | 75/00; 77/00 | Combinations, not otherwise provided for, of two or more engines | 73/00 | Engines for particular use, combinations with other devices | 61/00-67/00 | RUNNING-IN | 79/00 |
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