System and method for determining and adjusting fuel injection control parameters
AssigneeCummins Inc.
InventorDonald J. Benson
Life of this patent
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Abstract
A method of controlling an engine system includes controlling a fuel injector to perform a zero-fueling injector operation during operation of the engine, the zero-fueling injector operation including a non-zero injector on-time resulting in zero fueling by the injector, determining an injection system pressure change associated with the zero-fueling injector operation, modifying at least one fuel injection control parameter in response to the injection system pressure change, and using the modified fuel injection control parameter to control injection of fuel by the fuel injector during operation of the engine.
Claims18
An apparatus for controlling operation of an engine system including a fuel injection system including at least one fuel injector, the apparatus comprising a non-transitory controller-readable memory medium storing instructions executable by a controller to perform the acts of:
- energizing the fuel injector to perform a zero-fueling injector operation during operation of the engine, the zero-fueling injector operation including a non-zero injector on-time resulting in operation of the injector but zero fueling by the injector;
- determining an injection system pressure drop resulting from the zero-fueling injector operation;
- modifying at least one fuel injection control parameter in response to the injection system pressure drop;
- and
- using the modified fuel injection control parameter to control injection of fuel by the fuel injector during operation of the engine.
A method for controlling operation of an engine system including a fuel injection system including at least one fuel injector, the method comprising:
- energizing the fuel injector to perform a zero-fueling injector operation during operation of the engine, the zero-fueling injector operation including a non-zero injector on-time resulting in operation of the injector but zero fueling by the injector;
- determining an injection system pressure drop caused by the zero-fueling injector operation;
- modifying at least one fuel injection control parameter in response to the injection system pressure drop;
- and
- using the modified fuel injection control parameter to control injection of fuel by the fuel injector during operation of the engine.
Dependencies are inferred from the claim text.