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IPC entry: F01N 1/06 1-dot subgroup [Version 2024.01 (current), Language EN - English]

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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
F01B		MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES (of rotary-piston or oscillating-piston type F01C; of non-positive-displacement type F01D; combustion engines F02; internal-combustion aspects of reciprocating-piston engines F02B 57/00, F02B 59/00; machines for liquids F03, F04; crankshafts, crossheads, connecting-rods F16C; flywheels F16F; gearings for interconverting rotary motion and reciprocating motion in general F16H; pistons, piston-rods, cylinders, for engines in general F16J)
F01C		ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES (combustion engines F02; internal-combustion aspects F02B 53/00, F02B 55/00; machines for liquids F03, F04)
F01D		NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (combustion engines F02; machines or engines for liquids F03, F04; non-positive-displacement pumps F04D)
F01K		STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES (gas-turbine or jet-propulsion plants F02; steam generation F22; nuclear power plants, engine arrangements therein G21D)
F01L		CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
F01M		LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL-COMBUSTION ENGINES; CRANKCASE VENTILATING [2]
F01N		GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K 13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M 35/00; protecting against, or damping, noise in general G10K 11/16)
F01N 1/00		Silencing apparatus characterised by method of silencing [1, 2006.01]
F01N 1/02		. by using resonance [1, 2006.01]
F01N 1/04		. . having sound-absorbing materials in resonance chambers [1, 2006.01]
F01N 1/06		. by using interference effect [1, 2006.01]
F01N 1/08		. by reducing exhaust energy by throttling or whirling [1, 2006.01]
F01N 1/10		. . in combination with sound-absorbing materials [1, 2006.01]
F01N 1/12		. . using spirally- or helically-shaped channels (F01N 1/10 takes precedence; cyclones B04C) [1, 2006.01]
F01N 1/14		. by adding air to exhaust gases [1, 2006.01]
F01N 1/16		. by using movable parts [1, 2006.01]
F01N 1/18		. . having rotary movement [1, 2006.01]
F01N 1/20		. . having oscillating or vibrating movement (the parts being resilient walls F01N 1/22) [1, 2006.01]
F01N 1/22		. . the parts being resilient walls [1, 2006.01]
F01N 1/24		. by using sound-absorbing materials (F01N 1/04, F01N 1/06, F01N 1/10, F01N 1/14, F01N 1/16 take precedence) [1, 2006.01]
F01N 3/00		Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust (electric control F01N 9/00; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N 11/00) [1, 4, 2006.01]
F01N 5/00		Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy (using kinetic or wave energy of exhaust gases in exhaust systems for charging F02B) [1, 2006.01]
F01N 9/00		Electrical control of exhaust gas treating apparatus (monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N 11/00; conjoint electrical control of two or more combustion engine functions F02D 43/00) [4, 2006.01]
F01N 11/00		Monitoring or diagnostic devices for exhaust-gas treatment apparatus [7, 2006.01]
F01N 13/00		Exhaust or silencing apparatus characterised by constructional features [2010.01]
F01N 99/00		Subject matter not provided for in other groups of this subclass [2010.01]
F01P		COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K 11/00; heat-transfer, heat-exchange or heat-storage materials C09K 5/00; heat-exchange in general, radiators F28)
F02		COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
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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