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

ENGINES AND PUMPS

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

|  | F02D |
CONTROLLING COMBUSTION ENGINES (cyclically operating valves for combustion engines Fulltext... Hierarchy... Expanded...F01L; controlling combustion engine lubrication Fulltext... Hierarchy... Expanded...F01M; cooling internal-combustion engines Fulltext... Hierarchy... Expanded...F01P; supplying combustion engines with combustible mixtures or constituents thereof, e.g. carburettors, injection pumps, Fulltext... Hierarchy... Expanded...F02M; starting of combustion engines Fulltext... Hierarchy... Expanded...F02N; controlling of ignition Fulltext... Hierarchy... Expanded...F02P; controlling gas-turbine plants, jet-propulsion plants, or combustion-product engine plants, see the relevant sub-classes for these plants)

|  | F02D |
Note(s) Attention is drawn to the notes preceding class Fulltext... Hierarchy... Expanded...F01. In this sub-class: The following words are 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.

|  | F02D 1/00 - F02D 7/00 |
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 Fulltext... Hierarchy... Expanded...F02D 19/00; peculiar to supercharged engines Fulltext... Hierarchy... Expanded...F02D 23/00; automatic controllers for prime movers, in general Fulltext... Hierarchy... Expanded...G05D)

|  | F02D 1/00 |
Controlling fuel-injection pumps, e.g. of high-pressure injection type (controlling low-pressure fuel injection pumps Fulltext... Hierarchy... Expanded...F02D 3/00; controlling fuel injection electrically Fulltext... Hierarchy... Expanded...F02D 5/00)

|  | F02D 1/02 |
· | not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered

|  | F02D 1/04 |
· · | by mechanical means dependent on engine speed, e.g. using centrifugal governors (Fulltext... Hierarchy... Expanded...F02D 1/08 takes precedence)

|  | F02D 1/06 |
· · | by means dependent on pressure of engine working fluid (Fulltext... Hierarchy... Expanded...F02D 1/08 takes precedence)

|  | F02D 1/08 |
· · | Transmission of control impulse to pump control, e.g. with power drive or power assistance

|  | F02D 1/10 |
· · · | mechanical

|  | F02D 1/12 |
· · · | non-mechanical, e.g. hydraulic

|  | F02D 1/14 |
· · · · | pneumatic

|  | F02D 1/16 |
· | Adjustment of injection timing (Fulltext... Hierarchy... Expanded...F02D 1/02 takes precedence)

|  | F02D 1/18 |
· · | with non-mechanical means for transmitting control impulse; with amplification of control impulse

|  | F02D 3/00 |
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 (controlling fuel injection electrically Fulltext... Hierarchy... Expanded...F02D 5/00; carburettors Fulltext... Hierarchy... Expanded...F02M)

|  | F02D 3/02 |
· | with continuous injection

|  | F02D 3/04 |
· | Controlling fuel injection and carburation, e.g. of alternative systems

|  | F02D 5/00 |
Controlling fuel injection electrically

|  | F02D 5/02 |
· | with intermittent injection

|  | F02D 7/00 |
Other fuel-injection control

|  | F02D 7/02 |
· | Controlling fuel injection where fuel is injected by compressed air

|  | F02D 9/00 |
Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits

|  | F02D 9/02 |
· | concerning induction conduits (throttle valves, or arrangements thereof in conduits Fulltext... Hierarchy... Expanded...F02D 9/08)

|  | F02D 9/04 |
· | concerning exhaust conduits (throttle valves, or arrangements thereof in conduits Fulltext... Hierarchy... Expanded...F02D 9/08)

|  | F02D 9/06 |
· · | Exhaust brakes

|  | F02D 9/08 |
· | Throttle valves specially adapted therefor; Arrangements of such valves in conduits (throttle valves modified for use in, or arranged in, carburettors Fulltext... Hierarchy... Expanded...F02M; throttle valves in general Fulltext... Hierarchy... Expanded...F16K)

|  | F02D 9/10 |
· · | having pivotally-mounted flaps

|  | F02D 9/12 |
· · | having slidably-mounted valve-members; having valve-members movable longitudinally of conduit

|  | F02D 9/14 |
· · · | the members being slidable transversely of conduit

|  | F02D 9/16 |
· · · | the members being rotatable

|  | F02D 9/18 |
· · | having elastic-wall valve-members

|  | F02D 11/00 |
Arrangements or adaptations of personal initial controls or control linkages (specially for reversing Fulltext... Hierarchy... Expanded...F02D 27/00; specially for vehicles, see the relevant classes for vehicles)

|  | F02D 11/02 |
· | of hand, foot, or like personal initial controls

|  | F02D 11/04 |
· | of mechanical control linkages (with power drive or assistance Fulltext... Hierarchy... Expanded...F02D 11/06)

|  | F02D 11/06 |
· | of non-mechanical, e.g. fluid, control linkages; of control linkages with power drive or assistance

|  | F02D 11/08 |
· · | pneumatic

|  | F02D 11/10 |
· · | electric

|  | F02D 13/00 |
Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing (modifying valve gear Fulltext... Hierarchy... Expanded...F01L)

|  | F02D 13/02 |
· | during engine operation

|  | F02D 13/04 |
· · | Using engine as brake

|  | F02D 13/06 |
· · | Cutting-out cylinders

|  | F02D 13/08 |
· | for rendering engine inoperative or idling

|  | F02D 15/00 |
Varying compression ratio (modifying valve-gear Fulltext... Hierarchy... Expanded...F01L)

|  | F02D 15/02 |
· | by alteration or displacement of piston stroke

|  | F02D 15/04 |
· | by alteration of volume of compression space without changing piston stroke

|  | 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 Fulltext... Hierarchy... Expanded...F02D 13/00)

|  | F02D 17/02 |
· | Cutting-out (cutting-out engines in multiple-engine arrangements Fulltext... Hierarchy... Expanded...F02D 25/04)

|  | F02D 17/04 |
· | rendering engines inoperative or idling, e.g. caused by abnormal conditions (dependent on lubricating conditions Fulltext... Hierarchy... Expanded...F01M 1/22; dependent on cooling Fulltext... Hierarchy... Expanded...F01P 5/14)

|  | F02D 19/00 - F02D 29/00 |
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 Fulltext... Hierarchy... Expanded...F02D 21/00)

|  | F02D 19/02 |
· | peculiar to engines working with gaseous fuels (apparatus, or control parts thereof, for mixing gas and air Fulltext... Hierarchy... Expanded...F02M)

|  | F02D 19/04 |
· | peculiar to engines working with solid fuels, e.g. pulverised coal

|  | 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

|  | F02D 19/08 |
· · | simultaneously using pluralities of fuels (Fulltext... Hierarchy... Expanded...F02D 19/12 takes precedence)

|  | F02D 19/10 |
· · · | peculiar to compression-ignition engines in which the main fuel is gaseous

|  | F02D 19/12 |
· | 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 Fulltext... Hierarchy... Expanded...F02M)

|  | F02D 21/00 |
Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas

|  | F02D 21/02 |
· | peculiar to oxygen-fed engines

|  | F02D 21/04 |
· · | with circulation of exhaust gases in closed or semi-closed circuits

|  | F02D 21/06 |
· | peculiar to engines having other non-fuel gas added to combustion-air

|  | F02D 21/08 |
· · | the other gas being the exhaust gas of engine (circulation of exhaust gas in oxygen-fed engines Fulltext... Hierarchy... Expanded...F02D 21/04)

|  | F02D 21/10 |
· · | having secondary air added to fuel-air mixture (apparatus, or control parts thereof, for delivering secondary air Fulltext... Hierarchy... Expanded...F02M)

|  | F02D 23/00 |
Controlling engines characterised by their being supercharged

|  | F02D 23/02 |
· | the engines being of fuel-injection type

|  | F02D 25/00 |
Controlling two or more co-operating engines

|  | F02D 25/02 |
· | to synchronise speed

|  | F02D 25/04 |
· | by cutting-out engines

|  | F02D 27/00 |
Controlling engines characterised by their being reversible

|  | F02D 27/02 |
· | by performing a programme

|  | F02D 29/00 |
Controlling engines peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation (aspects predominantly concerning control of driven devices, see the relevant classes for these devices)

|  | F02D 29/02 |
· | peculiar to engines driving vehicles; peculiar to engines with conjoint control of engine and gearing; peculiar to engines driving variable-pitch propellers

|  | F02D 29/04 |
· | peculiar to engines driving pumps

|  | F02D 29/06 |
· | peculiar to engines driving electric generators

|  | F02D 31/00 - F02D 39/00 |
Other controlling of engines

|  | F02D 31/00 |
Using speed-sensing governors to control combustion engines, not otherwise provided for

|  | F02D 33/00 |
Controlling delivery of fuel or combustion-air, not otherwise provided for

|  | F02D 33/02 |
· | of combustion-air

|  | F02D 35/00 |
Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for

|  | F02D 35/02 |
· | on interior conditions

|  | F02D 37/00 |
Controlling conjointly two or more functions of engines, not otherwise provided for

|  | F02D 37/02 |
· | one of the functions being ignition (ignition control per se Fulltext... Hierarchy... Expanded...F02P)

|  | F02D 39/00 |
Other controlling

|  | F02D 39/02 |
· | for four-stroke engines

|  | F02D 39/04 |
· | for engines with other cycles than four-stroke, e.g. two-stroke

|  | F02D 39/06 |
· | for engines adding the fuel substantially at end of compression stroke

|  | F02D 39/08 |
· | for engines adding the fuel substantially before compression stroke

|  | F02D 39/10 |
· | for free-piston engines; for engines without rotary main shaft