|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

ENGINES OR PUMPS

|  | F01 - F04 |
Note(s) Guide to the use of this subsection (classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01-F04) The following notes are meant to assist in the use of this part of the classification scheme. In this subsection, subclasses or groups designating "engines" or "pumps" cover methods of operating the same, unless otherwise specifically provided for. In this subsection, the following terms or expressions are used with the meanings indicated: "engine" means a device for continuously converting fluid energy into mechanical power. Thus, this term includes, for example, steam piston engines or steam turbines, per se, or internal-combustion piston engines, but it excludes single-stroke devices. "Engine" also includes the fluid-motive portion of a meter unless such portion is particularly adapted for use in a meter; "pump" means a device for continuously raising, forcing, compressing, or exhausting fluid by mechanical or other means. Thus, this term includes fans or blowers; "machine" means a device which could equally be an engine and a pump, and not a device which is restricted to an engine or one which is restricted to a pump; "positive displacement" means the way the energy of a working fluid is transformed into mechanical energy, in which variations of volume created by the working fluid in a working chamber produce equivalent displacements of the mechanical member transmitting the energy, the dynamic effect of the fluid being of minor importance, and vice versa; "non-positive displacement" means the way the energy of a working fluid is transformed into mechanical energy, by transformation of the energy of the working fluid into kinetic energy, and vice versa; "oscillating-piston machine" means a positive-displacement machine in which a fluid-engaging work-transmitting member oscillates. This definition applies also to engines and pumps; "rotary-piston machine" means a positive-displacement machine in which a fluid-engaging work-transmitting member rotates about a fixed axis or about an axis moving along a circular or similar orbit. This definition applies also to engines and pumps; "rotary piston" means the work-transmitting member of a rotary-piston machine and may be of any suitable form, e.g., like a toothed gear; "cooperating members" means the "oscillating piston" or "rotary piston" and another member, e.g., the working-chamber wall, which assists in the driving or pumping action; "movement of the co-operating members" is to be interpreted as relative, so that one of the "co-operating members" may be stationary, even though reference may be made to its rotational axis, or both may move; "teeth or tooth equivalents" include lobes, projections or abutments; "internal-axis type" means that the rotational axes of the inner and outer co-operating members remain at all times within the outer member, e.g., in a similar manner to that of a pinion meshing with the internal teeth of a ring gear; "free piston" means a piston of which the length of stroke is not defined by any member driven thereby; "cylinders" means positive-displacement working chambers in general. Thus, this term is not restricted to cylinders of circular cross-section; "main shaft" means the shaft which converts reciprocating piston motion into rotary motion or vice versa; "plant" means an engine together with such additional apparatus as is necessary to run the engine. For example, a steam engine plant includes a steam engine and means for generating the steam; "working fluid" means the driven fluid in a pump and the driving fluid in an engine. The working fluid may be in a gaseous state, i.e., compressible, or liquid. In the former case coexistence of two states is possible; "steam" includes condensable vapours in general, and "special vapour" is used when steam is excluded; "reaction type" as applied to non-positive-displacement machines or engines means machines or engines in which pressure/velocity transformation takes place wholly or partly in the rotor. Machines or engines with no, or only slight, pressure/velocity transformation in the rotor are called "impulse type". In this subsection: cyclically operating valves, lubricating, gas-flow silencers or exhaust apparatus, or cooling are classified in subclasses Fulltext... Hierarchy... Expanded...F01L, Fulltext... Hierarchy... Expanded...F01M, Fulltext... Hierarchy... Expanded...F01N, Fulltext... Hierarchy... Expanded...F01P irrespective of their stated application, unless their classifying features are peculiar to their application, in which case they are classified only in the relevant subclass of classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F01-F04; lubricating, gas-flow silencers or exhaust apparatus, or cooling of machines or engines are classified in subclasses Fulltext... Hierarchy... Expanded...F01M, Fulltext... Hierarchy... Expanded...F01N, Fulltext... Hierarchy... Expanded...F01P except for those peculiar to steam engines which are classified in subclass Fulltext... Hierarchy... Expanded...F01B. For use of this subsection with a good understanding, it is essential to remember, so far as subclasses Fulltext... Hierarchy... Expanded...F01B, Fulltext... Hierarchy... Expanded...F01C, Fulltext... Hierarchy... Expanded...F01D, Fulltext... Hierarchy... Expanded...F03B, and Fulltext... Hierarchy... Expanded...F04B, Fulltext... Hierarchy... Expanded...F04C, Fulltext... Hierarchy... Expanded...F04D, which form its skeleton, are concerned: the principle which resides in their elaboration, the classifying characteristics which they call for, and their complementarity. Principle This concerns essentially the subclasses listed above. Other subclasses, notably those of class Fulltext... Hierarchy... Expanded...F02, which cover better-defined matter, are not considered here. Each subclass covers fundamentally a genus of apparatus (engine or pump) and by extension covers equally "machines" of the same kind. Two different subjects, one having a more general character than the other, are thus covered by the same subclass. Subclasses Fulltext... Hierarchy... Expanded...F01B, Fulltext... Hierarchy... Expanded...F03B, Fulltext... Hierarchy... Expanded...F04B, beyond the two subjects which they cover, have further a character of generality in relation to other subclasses concerning the different species of apparatus in the genus concerned. This generality applies as well for the two subjects dealt with, without these always being in relation to the same subclasses. Thus, subclass Fulltext... Hierarchy... Expanded...F03B, in its part dealing with "machines", should be considered as being the general class relating to subclasses Fulltext... Hierarchy... Expanded...F04B, Fulltext... Hierarchy... Expanded...F04C, and in its part dealing with "engines" as being general in relation to subclass Fulltext... Hierarchy... Expanded...F03C. Characteristics The principal classifying characteristic of the subclass is that of genera of apparatus, of which there are three possible: Machines; engines; pumps. As stated above, "machines" are always associated with one of the other two genera. These main genera are subdivided according to the general principles of operation of the apparatus: Positive displacement; non-positive displacement. The positive displacement apparatus are further subdivided according to the ways of putting into effect the principle of operation, that is, to the kind of apparatus: Simple reciprocating piston; rotary or oscillating piston; other kind. Another classifying characteristic is that of the working fluid, in respect of which three kinds of apparatus are possible, namely: Liquid and elastic fluid; elastic fluid; liquid. Complementarity This resides in association of pairs of the subclasses listed above, according to the characteristics under consideration in respect of kind of apparatus or working fluid. The subclasses concerned with the various principles, characteristics and complementarity are shown in the subsection index below. It is seen from this index that: For the same kind of apparatus in a given genus, the characteristics of "working fluid" associates: Fulltext... Hierarchy... Expanded...F01B and Fulltext... Hierarchy... Expanded...F04B to Machines Fulltext... Hierarchy... Expanded...F01C and Fulltext... Hierarchy... Expanded...F04C to Machines Fulltext... Hierarchy... Expanded...F01D and Fulltext... Hierarchy... Expanded...F03B to Machines Fulltext... Hierarchy... Expanded...F01B and Fulltext... Hierarchy... Expanded...F03C to Engines Fulltext... Hierarchy... Expanded...F01C and Fulltext... Hierarchy... Expanded...F03C to Engines Fulltext... Hierarchy... Expanded...F01D and Fulltext... Hierarchy... Expanded...F03B to Engines For the same kind of working fluid, the "apparatus" characteristic relates subclasses in the same way as considerations of relative generality.

|  | F01 - F04 |
Subsection index
MACHINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F04C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F04B
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
ENGINES |
positive displacement |
rotary or oscillating piston |
liquid and elastic fluid or elastic fluid | F01C
liquid only | F03C
reciprocating piston or other |
liquid and elastic fluid or elastic fluid | F01B
liquid only | F03C
non-positive displacement |
liquid and elastic fluid or elastic fluid | F01D
liquid only | F03B
PUMPS |
positive displacement |
rotary or oscillating piston | F04C
reciprocating piston or other | F04B
non-positive displacement | F04D

|  | F02 |
COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines Fulltext... Hierarchy... Expanded...F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS

|  | F02M |
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF (charging such engines Fulltext... Hierarchy... Expanded...F02B)

|  | F02M |
Note(s) In this subclass, the following terms or expressions are used with the meanings indicated: "carburettors" means essentially apparatus for mixing fuel with air, the fuel being brought into mixing contact with the air by lowering the air pressure, e.g. in a venturi; "fuel-injection apparatus" means apparatus for introducing fuel into a space, e.g. engine cylinder, by pressurising the fuel, e.g. by a pump acting behind the fuel, and thus includes the so-called "solid-fuel injection" in which liquid fuel is introduced without any admixture of gas; "low-pressure fuel injection" means fuel injection in which the fuel-air mixture containing fuel thus injected will be substantially compressed in the compression stroke of the engine; "pumping element" means a single piston-cylinder unit in a reciprocating-piston fuel-injection pump or the equivalent unit in any other type of fuel-injection pump. Attention is drawn to the Notes preceding class Fulltext... Hierarchy... Expanded...F01.

|  | F02M |
Subclass index
SUPPLYING WITH LIQUID FUEL |
Carburettors |
starting, idling; float-controlled fuel level; mixture control; throttling, mixing chambers | 1/00, 3/00; 5/00; 7/00; 9/00
heating, cooling, insulating | 15/00
multi-stage, register type; combinations of carburettors or fuels; combination with low-pressure injection | 11/00; 13/00; 71/00
other characteristics; other details, or accessories | 17/00; 19/00
Injection apparatus |
general characteristics, injection without gas |
with two or more sequentially-fed injectors; with two or more liquids | 41/00; 43/00
with cyclic delivery characteristics; with fluid-actuated valves | 45/00; 47/00
with pump or injector actuated by cylinder pressure or by the piston | 49/00
electrically-operated | 51/00
with heating, cooling, or insulating means; characterised by fuel pipes or venting means | 53/00; 55/00
injectors combined with other devices | 57/00
arrangements of apparatus relative to engine, related pump drives | 39/00
other adaptations of pumps; other injectors | 59/00; 61/00
other apparatus, details, or accessories | 63/00, 69/00
testing | 65/00
using high-pressure gas | 67/00
low-pressure apparatus | 51/02, 69/00, 71/00
SUPPLYING WITH NON-LIQUID FUEL | 21/00
FEEDING OR PRETREATING AIR, FUEL, OR FUEL-AIR MIXTURE |
Pre-treating fuel, air, or mixture |
adding secondary air; adding non-fuel substances or secondary fuel | 23/00; 25/00
by catalytic, electrical, or magnetic means, or by sound or radiation; thermally | 27/00; 31/00
by re-atomising or homogenising; air cleaning; other treatment | 29/00; 35/00; 33/00
Air intakes or silencers, induction systems | 35/00
Fuel transfer to carburettors or injection apparatus | 37/00
SUBJECT MATTER NOT PROVIDED FOR IN OTHER GROUPS OF THIS SUBCLASS | 99/00

|  | F02M 1/00 - F02M 19/00 |
Carburettors for liquid fuels

P:210 |  | F02M 1/00 |
Carburettors with means for facilitating engine's starting or its idling below operational temperatures

P:220 |  | F02M 3/00 |
Idling devices for carburettors (with means for facilitating idling below operational temperatures Fulltext... Hierarchy... Expanded...F02M 1/00)

P:250 |  | F02M 5/00 |
Float-controlled apparatus for maintaining a constant fuel level in carburettors

P:230 |  | F02M 7/00 |
Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions (choke valves for starting Fulltext... Hierarchy... Expanded...F02M 1/00)

P:240 |  | F02M 9/00 |
Carburettors having air or fuel-air mixture passage throttling valves other than of butterfly type (register-type carburettors Fulltext... Hierarchy... Expanded...F02M 11/00); Carburettors having fuel-air mixing chambers of variable shape or position

P:200 |  | F02M 11/00 |
Multi-stage carburettors; Register-type carburettors, i.e. with slidable or rotatable throttling valves in which a plurality of fuel nozzles, other than only an idling nozzle and a main one, are sequentially exposed to air stream by throttling valve

P:190 |  | F02M 13/00 |
Arrangements of two or more separate carburettors (apparatus for testing, tuning, or synchronising carburettors Fulltext... Hierarchy... Expanded...F02M 19/00; re-atomising condensed fuel or homogenising fuel-air mixture Fulltext... Hierarchy... Expanded...F02M 29/00); Carburettors using more than one fuel (apparatus for adding small quantities of secondary fuel Fulltext... Hierarchy... Expanded...F02M 25/00)

P:180 |  | F02M 15/00 |
Carburettors with heating, cooling, or thermal insulating means for combustion-air, fuel, or fuel-air mixture (heating, cooling, or thermally insulating float apparatus Fulltext... Hierarchy... Expanded...F02M 5/00; apparatus for thermally treating combustion-air, fuel, or fuel-air mixture, not being part of a carburettor Fulltext... Hierarchy... Expanded...F02M 31/00)

P:260 |  | F02M 17/00 |
Carburettors having pertinent characteristics not provided for in, or of interest apart from, the apparatus of main groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 1/00-F02M 15/00 (external control gear Fulltext... Hierarchy... Expanded...F02M 19/00; apparatus for treating combustion-air, fuel, or fuel-air mixture by catalysts, electric means, magnetism, rays, sonic waves, or the like Fulltext... Hierarchy... Expanded...F02M 27/00; combinations of carburettors and low-pressure fuel-injection apparatus Fulltext... Hierarchy... Expanded...F02M 71/00)

P:270 |  | F02M 19/00 |
Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 1/00-F02M 17/00 (measuring or testing apparatus in general Fulltext... Hierarchy... Expanded...G01)

P:0 |  | F02M 21/00 |
Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form

|  | F02M 21/02 |
· | for gaseous fuels (apparatus for vaporising liquid fuel by heat Fulltext... Hierarchy... Expanded...F02M 31/00; engines with apparatus generating gas from solid fuel, e.g. from wood, Fulltext... Hierarchy... Expanded...F02B 43/00)

|  | F02M 21/04 |
· · | Gas-air mixing apparatus (carburettors adapted to use liquid and gaseous fuels Fulltext... Hierarchy... Expanded...F02M 13/00; carburetting gases in general Fulltext... Hierarchy... Expanded...C10J)

|  | F02M 21/06 |
· · | Apparatus for de-liquefying, e.g. by heating (discharging liquefied gases in general Fulltext... Hierarchy... Expanded...F17C)

|  | F02M 23/00 - F02M 37/00 |
Engine-pertinent apparatus for feeding, or treating before their admission to engine, combustion-air, fuel, or fuel-air mixture

P:280 |  | F02M 23/00 |
Apparatus for adding secondary air to fuel-air mixture

P:290 |  | F02M 25/00 |
Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel, or fuel-air mixture (Fulltext... Hierarchy... Expanded...F02M 43/00 takes precedence; adding secondary air to fuel-air mixture Fulltext... Hierarchy... Expanded...F02M 23/00; using rays and simultaneously generating ozone Fulltext... Hierarchy... Expanded...F02M 27/00)

|  | F02M 25/06 |
· | adding lubricant vapours or exhaust gases

|  | F02M 25/07 |
· · | adding exhaust gases [5]

|  | F02M 25/08 |
· | adding fuel vapours drawn from engine fuel reservoir

P:310 |  | F02M 27/00 |
Apparatus for treating combustion-air, fuel, or fuel-air mixture, by catalysts, electric means, magnetism, rays, sonic waves, or the like

P:320 |  | F02M 29/00 |
Apparatus for re-atomising condensed fuel or homogenising fuel-air mixture (combined with secondary-air supply Fulltext... Hierarchy... Expanded...F02M 23/00)

P:300 |  | F02M 31/00 |
Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture (Fulltext... Hierarchy... Expanded...F02M 21/06, Fulltext... Hierarchy... Expanded...F02M 21/00 take precedence; such apparatus being part of a carburettor or fuel-injection apparatus Fulltext... Hierarchy... Expanded...F02M 15/00, Fulltext... Hierarchy... Expanded...F02M 53/00; adding hot secondary air to fuel-air mixture Fulltext... Hierarchy... Expanded...F02M 23/00)

|  | F02M 31/02 |
· | for heating

P:350 |  | F02M 33/00 |
Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners Fulltext... Hierarchy... Expanded...F02M 35/00; arrangements for purifying liquid fuel Fulltext... Hierarchy... Expanded...F02M 37/22)

P:330 |  | F02M 35/00 |
Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines (air cleaners in general Fulltext... Hierarchy... Expanded...B01D)

|  | F02M 35/02 |
· | Air cleaners

|  | F02M 35/10 |
· | Air intakes; Induction systems (using kinetic or wave energy of charge in induction systems for improving quantity of charge Fulltext... Hierarchy... Expanded...F02B)

|  | F02M 35/104 |
· · | Intake manifolds [6]

|  | F02M 35/12 |
· | Intake silencers

|  | F02M 35/14 |
· | Combined air cleaners and silencers

P:340 |  | F02M 37/00 |
Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus (Fulltext... Hierarchy... Expanded...F02M 69/00 takes precedence; feeding liquid fuel to combustion apparatus, in general Fulltext... Hierarchy... Expanded...F23K 5/00; fuel supply to apparatus for generating combustion products of high pressure or high velocity Fulltext... Hierarchy... Expanded...F23R 3/28); Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines (separating apparatus, filters per se Fulltext... Hierarchy... Expanded...B01D; centrifuges Fulltext... Hierarchy... Expanded...B04B) [5]

|  | F02M 37/02 |
· | Feeding by means of suction apparatus, e.g. by air flow through carburettors (by driven pumps Fulltext... Hierarchy... Expanded...F02M 37/04)

|  | F02M 37/04 |
· | Feeding by means of driven pumps (pump construction Fulltext... Hierarchy... Expanded...F04)

|  | F02M 37/06 |
· · | mechanically driven

|  | F02M 37/08 |
· · | electrically driven

|  | F02M 37/18 |
· · | characterised by provision of main and auxiliary pumps

|  | F02M 37/20 |
· | characterised by means for preventing vapour lock

|  | F02M 37/22 |
· | Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangement in the feeding system [3]

|  | F02M 39/00 - F02M 65/00 |
Fuel-injection apparatus

|  | F02M 39/00 - F02M 67/00 |
Note(s) Low-pressure fuel injection is classified in groups Fulltext... Hierarchy... Expanded...F02M 51/00, Fulltext... Hierarchy... Expanded...F02M 69/00 or Fulltext... Hierarchy... Expanded...F02M 71/00. [2009.01]

P:130 |  | F02M 39/00 |
Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements (Fulltext... Hierarchy... Expanded...F02M 49/00 takes precedence; arrangements of injectors Fulltext... Hierarchy... Expanded...F02M 61/00)

P:40 |  | F02M 41/00 |
Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor

|  | F02M 41/08 |
· | the distributor and pumping elements being combined

P:50 |  | F02M 43/00 |
Fuel-injection apparatus operating simultaneously on two or more fuels or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive

P:60 |  | F02M 45/00 |
Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship (fuel injectors having such deliveries by means of valves furnished at seated ends with pintle- or plug-shaped extensions Fulltext... Hierarchy... Expanded...F02M 61/00)

P:110 |  | F02M 47/00 |
Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure (Fulltext... Hierarchy... Expanded...F02M 49/00 takes precedence; apparatus with injection valves opened by fuel pressure and closed by non-fluid means, see the groups providing for other characteristics)

|  | F02M 47/02 |
· | of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves, and having means for periodically releasing that closing pressure

P:100 |  | F02M 49/00 |
Fuel-injection apparatus in which injection pumps are driven, or injectors are actuated, by the pressure in engine working cylinders, or by impact of engine working piston

P:70 |  | F02M 51/00 |
Fuel-injection apparatus characterised by being operated electrically

|  | F02M 51/02 |
· | specially for low-pressure fuel-injection (pumps per se Fulltext... Hierarchy... Expanded...F02M 51/04; injectors per se Fulltext... Hierarchy... Expanded...F02M 51/08)

|  | F02M 51/04 |
· | Pumps peculiar thereto

|  | F02M 51/06 |
· | Injectors peculiar thereto

|  | F02M 51/08 |
· · | specially for low-pressure fuel-injection

P:120 |  | F02M 53/00 |
Fuel-injection apparatus characterised by having heating, cooling, or thermally-insulating means

P:140 |  | F02M 55/00 |
Fuel-injection apparatus characterised by their fuel conduits or their venting means

|  | F02M 55/02 |
· | Conduits between injection pumps and injectors

P:30 |  | F02M 57/00 |
Fuel injectors combined or associated with other devices

P:160 |  | F02M 59/00 |
Pumps specially adapted for fuel-injection and not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 39/00-F02M 57/00 (general features of pumps Fulltext... Hierarchy... Expanded...F04)

|  | F02M 59/20 |
· | Varying fuel delivery in quantity or timing

P:150 |  | F02M 61/00 |
Fuel injectors not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 39/00-F02M 57/00 or Fulltext... Hierarchy... Expanded...F02M 67/00

P:170 |  | F02M 63/00 |
Other fuel-injection apparatus having pertinent characteristics not provided for in groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 39/00-F02M 57/00 or Fulltext... Hierarchy... Expanded...F02M 67/00; Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 39/00-F02M 61/00 or Fulltext... Hierarchy... Expanded...F02M 67/00

P:20 |  | F02M 65/00 |
Testing fuel-injection apparatus, e.g. testing injection timing

P:90 |  | F02M 67/00 |
Apparatus in which fuel-injection is effected by means of high-pressure gas, the gas carrying the fuel into working cylinders of the engine, e.g. air-injection type (using compressed air for low-pressure fuel-injection apparatus Fulltext... Hierarchy... Expanded...F02M 69/08)

P:80 |  | F02M 69/00 |
Low-pressure fuel-injection apparatus (electrically- operated Fulltext... Hierarchy... Expanded...F02M 51/00)

|  | F02M 69/02 |
· | Pumps peculiar thereto

|  | F02M 69/04 |
· | Injectors peculiar thereto

|  | F02M 69/06 |
· | characterised by the pressurisation of the fuel being caused by centrifugal force acting on the fuel

|  | F02M 69/08 |
· | characterised by the fuel being carried by compressed air into main stream of combustion-air

|  | F02M 69/10 |
· | peculiar to scavenged two-stroke engines, e.g. injecting into crankcase-pump chamber

|  | F02M 69/12 |
· | comprising a fuel-displaced free piston for intermittently metering and supplying fuel to injection nozzles [5]

|  | F02M 69/14 |
· | having cyclically-operated valves connecting injection nozzles to a source of fuel under pressure during the injection period [5]

|  | F02M 69/16 |
· | characterised by means for metering continuous fuel flow to injectors or means for varying fuel pressure upstream of injectors [5]

|  | F02M 69/28 |
· | characterised by means for cutting-out the fuel supply to the engine or to main injectors during certain operating periods, e.g. deceleration [5]

|  | F02M 69/30 |
· | characterised by means for facilitating the starting-up or idling of engines or by means for enriching fuel charge, e.g. below operational temperatures or upon high power demand of engines (at acceleration Fulltext... Hierarchy... Expanded...F02M 69/44) [5]

|  | F02M 69/44 |
· | characterised by means for supplying extra fuel to the engine on sudden air throttle opening, e.g at acceleration [5]

|  | F02M 69/46 |
· | Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F02M 69/02-F02M 69/44 [5]

P:10 |  | F02M 71/00 |
Combinations of carburettors and low-pressure fuel-injection apparatus (means for enriching charge on sudden air throttle opening of carburettors Fulltext... Hierarchy... Expanded...F02M 7/00)

P:360 |  | F02M 99/00 |
Subject matter not provided for in other groups of this subclass [8]