IPC 6 English version F02M 17/00-F02M 29/14

F02M01700-F02M02914

SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 02

COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines F 01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

F 02 M

SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF (charging such engines F 02 B)

17/

Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of preceding main groups (apparatus for treating combustion-air, fuel, or fuel-air mixture by catalysts, electric means, magnetism, rays, sonic waves, or the like F 02 M 27/00; combinations of carburettors and low-pressure fuel-injection apparatus F 02 M 71/00)

17/

Floatless carburettors

17/

having fuel inlet valve controlled by diaphragm

17/

having overflow chamber determining constant fuel level

17/

Carburettors having one or more fuel passages opening in a valve-seat surrounding combustion-air passage, the valve being opened by passing air

17/

the valve being of an eccentrically mounted butterfly type [5]

17/

Carburettors having one or more fuel passages opening in valve-member of air throttle

17/

the valve-member being of butterfly type

17/

Carburettors with fuel-supply parts opened and closed in synchronism with engine stroke

17/

Carburettors having continuously-rotating bodies, e.g. surface carburettors (fuel injection by centrifugal forces F 02 M 69/06)

17/

Other surface carburettors

17/

with fuel bath

17/

with air bubbling through bath

17/

with wicks

17/

with other wetted bodies

17/

fuel being drawn through a porous body

17/

Carburettors with fire-protecting devices, e.g. combined with fire-extinguishing apparatus

17/

automatically closing fuel conduits on outbreak of fire

17/

Other carburettors combined or associated with other apparatus, e.g. air filters (predominant aspects of the apparatus, see the relevant classes for such apparatus)

17/

Carburettors having fitments facilitating their cleaning

17/

Controlling of carburettors, not otherwise provided for (external control gear F 02 M 19/12)

17/

Selection of particular materials for carburettors, e.g. sheet metal, plastic, or translucent materials

17/

Float-controlled carburettors not otherwise provided for

17/

Carburettors characterised by draught direction and not otherwise provided for

17/

with down-draught

17/

with up-draught

17/

Carburettors having means for combating ice-formation (thermally F 02 M 15/02)

17/

Use of cold, produced by carburettors, for other purposes (apparatus using the cold, see the relevant classes for such apparatus)

19/

Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F 02 M 1/00 to F 02 M 17/00 (measuring or testing apparatus in general G 01)

19/

Apparatus for testing, tuning, or synchronising carburettors, e.g. carburettor flow stands [3]

19/

Metering-orifices, e.g. variable in diameter (variable during operation F 02 M 7/18)

19/

025

Metering orifices not variable in diameter [4]

19/

Fuel atomising nozzles; Arrangement of emulsifying air conduits (atomising in general B 05 B) [4]

19/

035

Mushroom-shaped atomising nozzles [4]

19/

Fuel-metering pins or needles

19/

Other details of fuel conduits

19/

Venturis

19/

in multiple arrangement

19/

External control gear, e.g. having dash-pots (dampening means in later stages of multi-stage carburettors F 02 M 11/04; carburettor control gear in which the carburettor aspects do not predominate, see the relevant classes)

21/

Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form

21/

for gaseous fuels (apparatus for vaporising liquid fuel by heat F 02 M 31/00; engines with apparatus generating gas from solid fuel, e.g. from wood, F 02 B 43/08)

21/

Gas-air mixing apparatus (carburettors adapted to use liquid and gaseous fuels F 02 M 13/08; carburetting gases in general C 10 J)

21/

Apparatus for de-liquefying, e.g. by heating (discharging liquefied gases in general F 17 C)

21/

for non-gaseous fuels (for engines operating on fuel containing oxidants F 02 B)

21/

for fuels with low melting point, e.g. apparatus having heating means

21/

for fuels in pulverised state (engine plants with fuel-pulverising apparatus F 02 B)

Engine-pertinent apparatus for feeding, or treating before their admission to engine, combustion-air, fuel, or fuel-air mixture

23/

Apparatus for adding secondary air to fuel-air mixture

23/

with personal control

23/

the secondary air-valve controlled by main combustion-air throttle [5]

23/

with automatic control

23/

dependent on engine speed

23/

dependent on pressure in main combustion-air induction system

23/

using valves directly opened by low pressure [6]

23/

dependent on temperature, e.g. engine temperature

23/

characterised by being combined with device for, or by secondary air effecting, re-atomising of condensed fuel

23/

characterised by adding hot air

25/

Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel, or fuel-air mixture (F 02 M 43/00 takes precedence; adding secondary air to fuel-air mixture F 02 M 23/00)

25/

(transferred to F 02 M 25/022)

25/

022

Adding fuel and water emulsion, water or steam [6]

25/

025

Adding water [6]

25/

028

into the charge intakes [6]

25/

into the cylinders [6]

25/

032

Producing and adding steam [6]

25/

035

into the charge intakes [6]

25/

038

into the cylinders [6]

25/

(transferred to F 02 M 25/022)

25/

adding lubricant vapours or exhaust gases

25/

adding exhaust gases [5]

25/

adding fuel vapours drawn from engine fuel reservoir

25/

adding acetylene, non-waterborne hydrogen, non-airborne oxygen, or ozone

25/

the apparatus having means for generating such gases (using rays and simultaneously generating ozone F 02 M 27/06)

25/

adding anti-knock agents, not provided for in groups F 02 M 25/022 to F 02 M 25/10

27/

Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sonic waves, or the like

27/

by catalysts

27/

by electric means or magnetism

27/

by rays

27/

by sonic or ultrasonic waves

29/

Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture (combined with secondary-air supply F 02 M 23/12)

29/

having rotary parts

29/

having screens, gratings, baffles, or the like (rotary F 02 M 29/02)

29/

generating whirling motion of mixture

29/

having spirally-wound wires

29/

adjustable

29/

having homogenising valves held open by mixture current

29/

re-atomising or homogenising being effected by unevenness of internal surfaces of mixture intake

F02M - F02M 15/06

F02M 31/00 - F02M 49/04