F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
ENGINES OR PUMPS
F02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F02D
CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K 31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) [2006.01]

Note(s) [4]

  • 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.
  • Attention is drawn to the Notes preceding class F01.
  • In this subclass, electrical aspects of control arrangements are classified in groups F02D 41/00-F02D 45/00.
Subclass index
CONTROLLING COMBUSTION ENGINES IN GENERAL
Characterised by action on engine operation
on injection: general; low pressure; other means 1/00, 3/00, 7/00
by throttling air or fuel-and-air induction or exhaust 9/00
on valve-operating cycle; varying compression ratio 13/00, 15/00
cutting-out cylinders, rendering engines inoperative or idling 17/00
on delivery of fuel or combustion-air, not otherwise provided for 33/00
on two or more associated functions not otherwise provided for 37/00
Characterised by initiating or actuating means
non-automatic initiation, e.g. by operator 11/00
initiation by speed-sensing governors or by interior or exterior conditions, not otherwise provided for 31/00, 35/00
Programme control 28/00
CONTROL OF PARTICULAR ENGINES
engines: characterised by fuel; by combustion medium used; by supercharge 19/00, 21/00, 23/00
co-operating engines; reversible engines; engines driving vehicle or particular devices 25/00, 27/00, 29/00
OTHER CONTROL
Non-electrical 39/00
Electrical 41/00-45/00
Controlling, e.g. regulating, fuel injection
F02D 1/00
Controlling fuel-injection pumps, e.g. of high-pressure injection type (F02D 3/00 takes precedence) [2006.01]
F02D 1/02
•
not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered [2006.01]
F02D 1/04
•
•
by mechanical means dependent on engine speed, e.g. using centrifugal governors (F02D 1/08 takes precedence) [2006.01]
F02D 1/06
•
•
by means dependent on pressure of engine working fluid (F02D 1/08 takes precedence) [2006.01]
F02D 1/08
•
•
Transmission of control impulse to pump control, e.g. with power drive or power assistance [2006.01]
F02D 1/10
•
•
•
mechanical [2006.01]
F02D 1/12
•
•
•
non-mechanical, e.g. hydraulic [2006.01]
F02D 1/14
•
•
•
•
pneumatic [2006.01]
F02D 1/16
•
Adjustment of injection timing (F02D 1/02 takes precedence) [2006.01]
F02D 1/18
•
•
with non-mechanical means for transmitting control impulse; with amplification of control impulse [2006.01]
F02D 3/00
Controlling low-pressure fuel injection, i.e. where the fuel-air 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 [2006.01]

Note(s) [5]

F02D 3/02
•
with continuous injection or continuous flow upstream of the injection nozzle [2006.01]
F02D 3/04
•
Controlling fuel injection and carburation, e.g. of alternative systems [2006.01]
F02D 7/00
Other non-electrical fuel injection control [2006.01]
F02D 7/02
•
Controlling fuel injection where fuel is injected by compressed air [2006.01]
F02D 9/00
Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits [2006.01]
F02D 9/02
•
concerning induction conduits (throttle valves, or arrangements thereof in conduits F02D 9/08) [2006.01]
F02D 9/04
•
concerning exhaust conduits (throttle valves, or arrangements thereof in conduits F02D 9/08) [2006.01]
F02D 9/06
•
•
Exhaust brakes [2006.01]
F02D 9/08
•
Throttle valves specially adapted therefor; Arrangements of such valves in conduits [2006.01]
F02D 9/10
•
•
having pivotally-mounted flaps [2006.01]
F02D 9/12
•
•
having slidably-mounted valve-members; having valve-members movable longitudinally of conduit [2006.01]
F02D 9/14
•
•
•
the members being slidable transversely of conduit [2006.01]
F02D 9/16
•
•
•
the members being rotatable [2006.01]
F02D 9/18
•
•
having elastic-wall valve-members [2006.01]
F02D 11/00
Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated (specially for reversing F02D 27/00) [2006.01]
F02D 11/02
•
characterised by hand, foot, or like operator controlled initiation means [2006.01]
F02D 11/04
•
characterised by mechanical control linkages (F02D 11/06 takes precedence) [2006.01]
F02D 11/06
•
characterised by non-mechanical control linkages, e.g. fluid control linkages or by control linkages with power drive or assistance [2006.01]
F02D 11/08
•
•
of the pneumatic type [2006.01]
F02D 11/10
•
•
of the electric type [2006.01]
F02D 13/00
Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing [2006.01]
F02D 13/02
•
during engine operation [2006.01]
F02D 13/04
•
•
using engine as brake [2006.01]
F02D 13/06
•
•
Cutting-out cylinders [2006.01]
F02D 13/08
•
for rendering engine inoperative or idling [2006.01]
F02D 15/00
Varying compression ratio [2006.01]
F02D 15/02
•
by alteration or displacement of piston stroke [2006.01]
F02D 15/04
•
by alteration of volume of compression space without changing piston stroke [2006.01]
F02D 17/00
Controlling engines by cutting-out individual cylinders; Rendering engines inoperative or idling (controlling or rendering inoperative by varying inlet or exhaust valve operating characteristics F02D 13/00) [2006.01]
F02D 17/02
•
Cutting-out (cutting-out engines in multiple-engine arrangements F02D 25/04) [2006.01]
F02D 17/04
•
rendering engines inoperative or idling, e.g. caused by abnormal conditions (dependent on lubricating conditions F01M 1/22; dependent on cooling F01P 5/14) [2006.01]
Controlling peculiar to specified types or adaptations of engines
F02D 19/00
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 F02D 21/00) [2006.01]
F02D 19/02
•
peculiar to engines working with gaseous fuels [2006.01]
F02D 19/04
•
peculiar to engines working with solid fuels, e.g. pulverised coal [2006.01]
F02D 19/06
•
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 [2006.01]
F02D 19/08
•
•
simultaneously using pluralities of fuels (F02D 19/12 takes precedence) [2006.01]
F02D 19/10
•
•
•
peculiar to compression-ignition engines in which the main fuel is gaseous [2006.01]
F02D 19/12
•
peculiar to engines working with non-fuel substances or with anti-knock agents, e.g. with anti-knock fuel [2006.01]
F02D 21/00
Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas [2006.01]
F02D 21/02
•
peculiar to oxygen-fed engines [2006.01]
F02D 21/04
•
•
with circulation of exhaust gases in closed or semi-closed circuits [2006.01]
F02D 21/06
•
peculiar to engines having other non-fuel gas added to combustion-air [2006.01]
F02D 21/08
•
•
the other gas being the exhaust gas of engine [2006.01]
F02D 21/10
•
•
having secondary air added to fuel-air mixture [2006.01]
F02D 23/00
Controlling engines characterised by their being supercharged [2006.01]
F02D 23/02
•
the engines being of fuel-injection type [2006.01]
F02D 25/00
Controlling two or more co-operating engines [2006.01]
F02D 25/02
•
to synchronise speed [2006.01]
F02D 25/04
•
by cutting-out engines [2006.01]
F02D 27/00
Controlling engines characterised by their being reversible [2006.01]
F02D 27/02
•
by performing a programme [2006.01]
F02D 28/00
Programme-control of engines [2006.01]
F02D 29/00
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 [2006.01]
F02D 29/02
•
peculiar to engines driving vehicles; peculiar to engines driving variable-pitch propellers [2006.01]
F02D 29/04
•
peculiar to engines driving pumps [2006.01]
F02D 29/06
•
peculiar to engines driving electric generators [2006.01]
Other non-electrical control of combustion engines [4]
F02D 31/00
Use of non-electrical speed-sensing governors to control combustion engines, not otherwise provided for [2006.01]
F02D 33/00
Non-electrical control of delivery of fuel or combustion-air, not otherwise provided for [2006.01]
F02D 33/02
•
of combustion-air [2006.01]
F02D 35/00
Non-electrical control of engines, dependent on conditions exterior or interior to engines, not otherwise provided for [2006.01]
F02D 35/02
•
on interior conditions [2006.01]
F02D 37/00
Non-electrical conjoint control of  two or more functions of engines, not otherwise provided for [2006.01]
F02D 37/02
•
one of the functions being ignition [2006.01]
F02D 39/00
Other non-electrical control [2006.01]
F02D 39/02
•
for four-stroke engines [2006.01]
F02D 39/04
•
for engines with other cycles than four-stroke, e.g. two-stroke [2006.01]
F02D 39/06
•
for engines adding the fuel substantially at end of compression stroke [2006.01]
F02D 39/08
•
for engines adding the fuel substantially before compression stroke [2006.01]
F02D 39/10
•
for free-piston engines; for engines without rotary main shaft [2006.01]
Electrical control of combustion engines [4]

Note(s) [6]

F02D 41/00
Electrical control of supply of combustible mixture or its constituents (F02D 43/00 takes precedence) [2006.01]
F02D 41/02
•
Circuit arrangements for generating control signals [2006.01]
F02D 41/04
•
•
Introducing corrections for particular operating conditions (F02D 41/14 takes precedence) [2006.01]
F02D 41/06
•
•
•
for engine starting or warming up [2006.01]
F02D 41/08
•
•
•
for idling (F02D 41/06, F02D 41/16 take precedence) [2006.01]
F02D 41/10
•
•
•
for acceleration [2006.01]
F02D 41/12
•
•
•
for deceleration [2006.01]
F02D 41/14
•
•
Introducing closed-loop corrections [2006.01]
F02D 41/16
•
•
•
for idling [2006.01]
F02D 41/18
•
•
by measuring intake air flow [2006.01]
F02D 41/20
•
Output circuits, e.g. for controlling currents in command coils [2006.01]
F02D 41/22
•
Safety or indicating devices for abnormal conditions [2006.01]
F02D 41/24
•
characterised by the use of digital means [2006.01]
F02D 41/26
•
•
using computer, e.g. microprocessor [2006.01]
F02D 41/28
•
•
•
Interface circuits [2006.01]
F02D 41/30
•
Controlling fuel injection [2006.01]
F02D 41/32
•
•
of the low pressure type [2006.01]
F02D 41/34
•
•
•
with means for controlling injection timing or duration [2006.01]
F02D 41/36
•
•
•
with means for controlling distribution [2006.01]
F02D 41/38
•
•
of the high pressure type [2006.01]
F02D 41/40
•
•
•
with means for controlling injection timing or duration [2006.01]
F02D 43/00
Conjoint electrical control of two or more functions, e.g. ignition, fuel-air mixture, recirculation, supercharging or exhaust-gas treatment [2006.01]
F02D 43/02
•
using only analogue means [2006.01]
F02D 43/04
•
using only digital means [2006.01]
F02D 45/00
Electrical control not provided for in groups F02D 41/00-F02D 43/00 [2006.01]