IPC 6 English version F02D !A-F02D 45/00

F02D-F02D04500

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 D

CONTROLLING COMBUSTION ENGINES (vehicle fittings for automatically controlling vehicle speed B 60 K 31/00; cyclically operating valves for combustion engines F 01 L; controlling combustion engine lubrication F 01 M; cooling internal-combustion engines F 01 P; supplying combustion engines with combustible mixtures or constituents thereof, e.g. carburettors, injection pumps, F 02 M; starting of combustion engines F 02 N; controlling of ignition F 02 P; controlling gas-turbine plants, jet-propulsion plants, or combustion-product engine plants, see the relevant subclasses for these plants) [4]

Notes

(1)

In this subclass, the following term or expression is used with the meanings indicated:

–

"fuel injection" means the introduction of a combustible substance into a space, e.g. cylinder, by means of a pressure source, e.g. a pump, continuously or cyclically acting behind the substance;

–

"supercharging" means supplying to the working space, e.g. cylinder, combustion-air pressurised by means of a pressure source, e.g. a pump.

(2)

Attention is drawn to the Notes preceding class F 01.

(3)

In this subclass, electrical aspects of control arrangements are classified in groups F 02 D 41/00 to F 02 D 45/00. [4]

Controlling, e.g. regulating, fuel injection (peculiar to engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures F 02 D 19/00; peculiar to supercharged engines F 02 D 23/00; automatic controllers for prime movers, in general G 05 D)

Controlling fuel-injection pumps, e.g. of high-pressure injection type (F 02 D 3/00 takes precedence) [2]

not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered

by mechanical means dependent on engine speed, e.g. using centrifugal governors (F 02 D 1/08 takes precedence)

by means dependent on pressure of engine working fluid (F 02 D 1/08 takes precedence)

Transmission of control impulse to pump control, e.g. with power drive or power assistance

mechanical

non-mechanical, e.g. hydraulic

pneumatic

Adjustment of injection timing (F 02 D 1/02 takes precedence)

with non-mechanical means for transmitting control impulse; with amplification of control impulse

Controlling low-pressure fuel injection, i.e. where the air-fuel mixture containing fuel thus injected will be substantially compressed by the compression stroke of the engine, by means other than controlling only an injection pump (carburettors F 02 M) [2]

Note

When the control apparatus or system forms part of the low-pressure fuel-injection apparatus it is classified in group F 02 M 69/00. [5]

with continuous injection or continuous flow upstream of the injection nozzle [2]

Controlling fuel injection and carburation, e.g. of alternative systems

Other non-electrical fuel injection control [4]

Controlling fuel injection where fuel is injected by compressed air

Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits

concerning induction conduits (throttle valves, or arrangements thereof in conduits F 02 D 9/08)

concerning exhaust conduits (throttle valves, or arrangements thereof in conduits F 02 D 9/08)

Exhaust brakes

Throttle valves specially adapted therefor; Arrangements of such valves in conduits (throttle valves modified for use in, or arranged in, carburettors F 02 M; throttle valves in general F 16 K)

having pivotally-mounted flaps

having slidably-mounted valve-members; having valve-members movable longitudinally of conduit

the members being slidable transversely of conduit

the members being rotatable

having elastic-wall valve-members

11/

Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated (specially for reversing F 02 D 27/00; arrangement or mounting of prime-mover control devices in vehicles B 60 K 26/00; conjoint control of engines and units of another kind, e.g. clutches, gearings, brakes, B 60 K 41/00, e.g. B 60 K 41/20) [2,5]

11/

characterised by hand, foot, or like operator controlled initiation means [5]

11/

characterised by mechanical control linkages (with power drive or assistance F 02 D 11/06) [5]

11/

characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance [5]

11/

of the pneumatic type [5]

11/

of the electric type [5]

13/

Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing (modifying valve gear F 01 L)

13/

during engine operation

13/

using engine as brake

13/

Cutting-out cylinders

13/

for rendering engine inoperative or idling

15/

Varying compression ratio (modifying valve-gear F 01 L)

15/

by alteration or displacement of piston stroke

15/

by alteration of volume of compression space without changing piston stroke

17/

Controlling engines by cutting-out individual cylinders; Rendering engines inoperative or idling (controlling or rendering inoperative by varying inlet or exhaust valve operating characteristics F 02 D 13/00)

17/

Cutting-out (cutting-out engines in multiple-engine arrangements F 02 D 25/04)

17/

rendering engines inoperative or idling, e.g. caused by abnormal conditions (dependent on lubricating conditions F 01 M 1/22; dependent on cooling F 01 P 5/14)

Controlling peculiar to specified types or adaptations of engines

19/

Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures (the non-fuel substances being gaseous F 02 D 21/00)

19/

peculiar to engines working with gaseous fuels (apparatus, or control parts thereof, for mixing gas and air F 02 M)

19/

peculiar to engines working with solid fuels, e.g. pulverised coal

19/

peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed

19/

simultaneously using pluralities of fuels (F 02 D 19/12 takes precedence)

19/

peculiar to compression-ignition engines in which the main fuel is gaseous

19/

peculiar to engines working with non-fuel substances or with anti-knock agents, e.g. with anti-knock fuel (apparatus, or control parts thereof, for delivering such substances or agents F 02 M)

21/

Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas

21/

peculiar to oxygen-fed engines

21/

with circulation of exhaust gases in closed or semi-closed circuits

21/

peculiar to engines having other non-fuel gas added to combustion-air

21/

the other gas being the exhaust gas of engine (circulation of exhaust gas in oxygen-fed engines F 02 D 21/04)

21/

having secondary air added to fuel-air mixture (apparatus, or control parts thereof, for delivering secondary air F 02 M)

23/

Controlling engines characterised by their being supercharged

23/

the engines being of fuel-injection type

25/

Controlling two or more co-operating engines

25/

to synchronise speed

25/

by cutting-out engines

27/

Controlling engines characterised by their being reversible

27/

by performing a programme

28/

Programme-control of engines (programme-control specific to a type or purpose covered by one of the groups of this subclass, except groups F 02 D 29/00, F 02 D 39/00, or by one group of another subclass, e.g. of F 01 L, see that group; programme-control in general G 05 B 19/00) [2]

29/

Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto (conjoint control of engines and units of another kind B 60 K 41/00, e.g. B 60 K 41/20) [2]

29/

peculiar to engines driving vehicles; peculiar to engines driving variable-pitch propellers [2]

29/

peculiar to engines driving pumps

29/

peculiar to engines driving electric generators

Other non-electrical control of engines [4]

31/

Use of speed-sensing governors to control combustion engines, not otherwise provided for

33/

Controlling delivery of fuel or combustion-air, not otherwise provided for

33/

of combustion-air

35/

Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for

35/

on interior conditions

37/

Controlling conjointly two or more functions of engines, not otherwise provided for

37/

one of the functions being ignition (ignition control per se F 02 P)

39/

Other non-electrical control [4]

39/

for four-stroke engines

39/

for engines with other cycles than four-stroke, e.g. two-stroke

39/

for engines adding the fuel substantially at end of compression stroke

39/

for engines adding the fuel substantially before compression stroke

39/

for free-piston engines; for engines without rotary main shaft

Electrical control of combustion engines [4]

Notes

(1)

Groups F 02 D 41/00 to F 02 D 45/00 cover electrical aspects of electrically controlled devices. [6]

(2)

Groups F 02 D 41/00 to F 02 D 45/00 do not cover: [6]

–

non-electrical aspects of electrically controlled devices, which are covered by groups F 02 D 1/00 to F 02 D 39/00 or by subclass F 02 M; [6]

–

both electrical and non-electrical aspects of electrically controlled devices, which are covered by groups F 02 D 1/00 to F 02 D 39/00 or by subclass F 02 M. [4,6]

41/

Electrical control of supply of combustible mixture or its constituents (F 02 D 43/00 takes precedence) [4]

41/

Circuit arrangements for generating control signals [4]

41/

Introducing corrections for particular operating conditions (F 02 D 41/14 takes precedence) [4]

41/

for engine starting or warming up [4]

41/

for idling (F 02 D 41/06, F 02 D 41/16 take precedence) [4]

41/

for acceleration [4]

41/

for deceleration [4]

41/

Introducing closed-loop corrections [4]

41/

for idling [4]

41/

by measuring intake air flow (measuring flow, in general G 01 F) [4]

41/

Output circuits, e.g. for controlling currents in command coils (current control in inductive loads in general H 03 K 17/64) [4]

41/

Safety or indicating devices for abnormal conditions [4]

41/

characterised by the use of digital means [4]

41/

using computer, e.g. microprocessor [4]

41/

Interface circuits [4]

41/

Controlling fuel injection [4]

41/

of the low pressure type [4]

41/

with means for controlling injection timing or duration (ignition timing F 02 P 5/00) [4]

41/

with means for controlling distribution (arrangement of ignition distributors F 02 P 7/00) [4]

41/

of the high pressure type [4]

41/

with means for controlling injection timing or duration [4]

43/

Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging, exhaust-gas treatment (electrical control of exhaust gas treating apparatus per se F 01 N 9/00) [4]

43/

using only analogue means [4]

43/

using only digital means [4]

45/

Electrical control not provided for in groups F 02 D 41/00 to F 02 D 43/00 (electrical control of exhaust gas treating apparatus F 01 N 9/00; electrical control of one of the functions: ignition, lubricating, cooling, starting, intake-heating, see the relevant subclasses for such functions) [4]