CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; 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)

Description

F02D covers control systems and regulatory mechanisms for internal combustion engines, including fuel injection timing and quantity, ignition timing, air intake, and emission control strategies. This subclass encompasses mechanical, pneumatic, hydraulic, and electronic control devices that optimize engine performance across operating conditions, including governors, carburetors, fuel pumps, and modern electronic control units (ECUs). F02D excludes engine design itself (F02B) and fuel supply systems not directly involved in engine control (F02M), focusing instead on active regulation and feedback systems that manage engine operation.

27 direct subcodes

Child Classifications

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F02D 1/00 Controlling fuel-injection pumps, e.g. of high pressure injection type (F02D3/00 takes precedence)
F02D 11/00 Arrangements for, or adaptations to, non-automatic engine control initiation means, e.g. operator initiated (specially for reversing F02D27/00)
F02D 13/00 Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
F02D 15/00 Varying compression ratio
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 F02D13/00)
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 F02D21/00)
F02D 21/00 Controlling engines characterised by their being supplied with non-airborne oxygen or other non-fuel gas
F02D 2200/00 Input parameters for engine control
F02D 2250/00 Engine control related to specific problems or objectives
F02D 23/00 Controlling engines characterised by their being supercharged
F02D 2400/00 Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
F02D 25/00 Controlling two or more co-operating engines
F02D 27/00 Controlling engines characterised by their being reversible
F02D 2700/00 Mechanical control of speed or power of a single cylinder piston engine
F02D 28/00 Program control of engines
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
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
F02D 31/00 Use of 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 35/00 Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for