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IPC 7
  F02M 17/00 - F02M 29/14  
F02M03100-F02M04904
  F02M 51/00 - F02M 71/04  

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


F 02COMBUSTION ENGINES (cyclically operating valves therefor, lubricating, exhausting, or silencing engines F01); HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS


F 02 MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF (charging such engines F02B)


31/

00Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture (F02M 21/06, F02M 21/10 take precedence; such apparatus being part of a carburettor or fuel-injection apparatus F02M 15/00, F02M 53/00; adding hot secondary air to fuel-air mixture F02M 23/14)

31/

02.for heating

31/

04..combustion-air or fuel-air mixture (electrically F02M 31/12; by using heat from working cylinders or cylinder heads F02M 31/14; heating of combustion-air as an engine starting aid F02N 17/04)  [4]

31/

06...by hot gases, e.g. by mixing cold and hot air

31/

07....Temperature-responsive control, e.g. using thermostatically-controlled valves (F02M 31/083 takes precedence)  [6]

31/

08....the gases being exhaust gases

31/

083.....Temperature-responsive control of the amount of exhaust gas or combustion air directed to the heat exchange surface  [6]

31/

087.....Heat-exchange arrangements between the air intake and exhaust gas passages, e.g. by means of contact between the passages  [5]

31/

093......Air intake passage surrounding the exhaust gas passage; Exhaust gas passage surrounding the air intake passage  [5]

31/

10...by hot liquids, e.g. lubricants

31/

12..electrically

31/

125...Fuel  [5]

31/

13...Combustion air  [5]

31/

135...Fuel-air mixture  [5]

31/

14..by using heat from working cylinders or cylinder heads

31/

16..Other apparatus for heating fuel

31/

18...to vaporise fuel

31/

20.for cooling (cooling of charging-air or of scavenging-air F02B)


33/

00Other apparatus for treating combustion-air, fuel or fuel-air mixture (combustion-air cleaners F02M 35/00; arrangements for purifying liquid fuel F02M 37/22)

33/

02.for collecting and returning condensed fuel

33/

04..returning to the intake passage  [5]

33/

06...with simultaneous heat supply  [5]

33/

08..returning to the fuel tank  [5]


35/

00Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines (air cleaners in general B01D)

35/

02.Air cleaners

35/

022..acting by gravity, by centrifugal, or by other inertial forces, e.g. with moistened walls  [2]

35/

024..using filters, e.g. moistened (F02M 35/026 takes precedence; cleaning of the filtering material F02M 35/08)  [2]

35/

026..acting by guiding the air over or through an oil or other liquid bath, e.g. combined with filters  [2]

35/

04..specially arranged with respect to engine; Mounting thereon

35/

06...combined or associated with engine's cooling blower or fan, or with flywheel

35/

08..with means for removing dust from cleaners; with means for indicating clogging; with by-pass means

35/

09...Clogging indicators  [6]

35/

10.Air intakes; Induction systems (using kinetic or wave energy of charge in induction systems for improving quantity of charge F02B)

35/

104..Intake manifolds  [6]

35/

108...with primary and secondary intake passages  [6]

35/

112...for engines with cylinders all in one line (F02M 35/108 takes precedence)  [6]

35/

116...for engines with cylinders in V-arrangement or arranged oppositely relative to the main shaft (F02M 35/108 takes precedence)  [6]

35/

12.Intake silencers

35/

14.Combined air cleaners and silencers

35/

16.characterised by use in vehicles (predominant vehicle aspects, see the relevant classes for the vehicles)


37/

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

37/

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

37/

04.Feeding by means of driven pumps (pump construction F04)

37/

06..mechanically driven

37/

08..electrically driven

37/

10...submerged in fuel, e.g. in reservoir

37/

12..fluid-driven, e.g. by compressed combustion-air

37/

14..the pumps being combined with other apparatus

37/

16..characterised by provision of personally-, e.g. manually-, operated pumps

37/

18..characterised by provision of main and auxiliary pumps

37/

20.characterised by means for preventing vapour lock

37/

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


Fuel-injection apparatus (carrying the fuel into cylinders by high-pressure gas F02M 67/00; low-pressure fuel-injection F02M 69/00)


39/

00Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements (arrangements of injectors F02M 61/14)

39/

02.Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives (F02M 49/00 takes precedence)


41/

00Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor

41/

02.the distributor being spaced from pumping elements

41/

04..the distributor reciprocating

41/

06..the distributor rotating

41/

08.the distributor and pumping elements being combined

41/

10..pump pistons acting as the distributor

41/

12...the pistons rotating to act as the distributor

41/

14..rotary distributor supporting pump pistons

41/

16.characterised by the distributor being fed from a constant-pressure source, e.g. accumulator


43/

00Fuel-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

43/

02.Pumps peculiar thereto

43/

04.Injectors peculiar thereto


45/

00Fuel-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 F02M 61/06)

45/

02.with each cyclic delivery being separated into two or more parts

45/

04..with a small initial part

45/

06...Pumps peculiar thereto

45/

08...Injectors peculiar thereto

45/

10..Other injectors with multiple-part delivery, e.g. with vibrating valves

45/

12.providing a continuous delivery with variable pressure


47/

00Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure (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)

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

47/

04.using fluid, other than fuel, for injection-valve actuation

47/

06.Other fuel injectors peculiar thereto


49/

00Fuel-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

49/

02.using the cylinder pressure, e.g. compression end pressure

49/

04.using the piston impact

  F02M 17/00 - F02M 29/14    F02M 51/00 - F02M 71/04  
 

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