Pressurizing a gas injection type fuel injection system
AssigneeOrbital Engine Company Proprietary Limited
InventorPeter W. Ragg
Life of this patent
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Abstract
A fuel injected internal combustion engine and a method of operating same, the engine having a fuel injection system wherein fuel is injected through a selectively openable injector nozzle directly into a combustion chamber of the engine by gas from a pressurized gas supply system. While the engine is being cranked during start-up of the engine, the injectory nozzle is opened to communicate said combustion chamber with the gas supply system. Gas compressed within the combustion chamber enters into the gas supply system to assist in rapidly establishing gas pressure for subsequent operation of the fuel injection system.
Claims14
A method of operating an internal combustion engine having a fuel injection system wherein fuel is injected through a selectively openable injector nozzle directly into a combustion chamber of the engine by gas from a pressurised gas supply system, characterised by the step of delivering gas from the engine combustion chamber through the injector nozzle into the gas supply system in response to the occurance of an engine start-up sequence.
A fuel injected internal combustion engine having a fuel injection system wherein fuel is injected through a selectively openable injector nozzle directly into a combustion chamber of the engine by gas from a pressurised gas supply system, characterised by means operable to initiate an engine start-up sequence to establish operation of the engine, and means operable to open said injector nozzle in response to the occurance of the start-up sequence to permit gas to be supplied from the combustion chamber to the gas supply system during said start-up sequence.
A fuel injected internal combustion engine having a fuel injection system wherein fuel is injected through a selectively openable injector nozzle directly into a combustion chamber of the engine by gas from a pressurised gas supply system, characterised by cranking means operable to crank the engine during start-up of the engine, means to activate said cranking means, and nozzle control means operable in response to actuation of said activator means to communicate said combustion chamber with said gas supply system whereby gas is supplied from the combustion chamber to the gas supply system during cranking of the engine.
Dependencies are inferred from the claim text.