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US 5,794,600 AGranted
Internal combustion engine control
AssigneeOrbital Engine Company (Australia) Pty. Limited
InventorRaymond John Hill
Life of this patent
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AssigneeOrbital Engine Company (Australia) Pty. Limited
InventorRaymond John Hill
Estimating the term…
A method of controlling operation of an internal combustion engine over part of the load or speed operational range of the engine by the use of fluid pressure available from a source associated with the operation of the engine to effect a managed control of at least one operating parameter of the engine such as engine speed or fuel delivery including fuelling rate and timing, or ignition timing. The gas pressure is preferably derived from a source where the pressure varies in relation to variations in the engine speed and/or load or from a substantially steady pressure source, applied in a selective manner to effect the control. Preferably, the fluid pressure is a gas pressure derived from the operation of the engine. For example, the gas pressure may be derived from the gas in the crankcase of a two stroke cycle crankcase scavenged engine or from another source where the pressure of the gas is cyclic in a known waveform and provision is made to selectively apply the high and/or low portion of the pressure wave to the control device to effect the control of the engine operation.
A method of operating an internal combustion engine having a fuel injection system comprising the steps of injecting fuel entrained in a compressed gas to in engine combustion chamber, electronically managing fluid pressure available from a source associated with the operation of the engine in at least part of the load operating range of the engine, applying said managed pressure as an energy source to power a control device to control at least one operating parameter of the engine, wherein said step of electronically managing fluid pressure comprises the step of controlling said fluid pressure using an electronic control unit.
A method of controlling the speed of a fuel injected internal combustion engine comprising the steps of injecting fuel entrained in a compressed gas into an engine combustion chamber, controlling a fuelling rate by controlling a physical movement of a fuel control member at least when the engine is idling or operating in a selected speed range, and electronically managing a pressure of said gas to control said movement of said fuel control member in response to the pressure of said gas acting as an energy source for said fuel control member.
An internal combustion engine having a fuel injection system to deliver fuel entrained in a compressed gas to the engine combustion chamber, comprising a control device operable in response to changes in fluid pressure, the control of said control device being effected by an electronic control unit, and means for electronically managing and providing said fluid pressure as an energy source to actuate said control device, wherein said fluid pressure is available from a source associated with the operation of the engine.
Dependencies are inferred from the claim text.