Apparatus for and method of controlling fuel injection of engine
AssigneeHitachi, Ltd.
InventorHirokazu Shimizu
Life of this patent
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Abstract
An apparatus for and a method of controlling a fuel injection in which, in fuel injection control of an engine including a variable valve mechanism that can change an inlet valve opening characteristic, when an intake air amount is changed by an operation of the variable valve mechanism after the fuel injection valve performs first injection, a fuel amount corresponding to the change in intake air amount is injected in second injection after the first injection, and the sum of the fuel amount injected in the first injection and the fuel amount injected in the second injection becomes a fuel amount corresponding to an intake air amount fixed at an inlet valve closing timing.
Claims20
An apparatus for controlling fuel injection for an engine, comprising:
- a fuel injection valve;
- an inlet valve;
- a variable valve mechanism that is configured to vary an opening characteristic of the inlet valve;
- and
- a control unit that computes a first injection amount in first injection, computes a second injection amount in second injection based on a change in intake air amount caused by an operation of the variable valve mechanism after the computation of the first injection amount, and provides fuel injection from the fuel injection valve by dividing the fuel injection into the first injection and the second injection subsequent to the first injection.
An apparatus for controlling fuel injection for an engine, comprising:
- fuel injection means;
- an Inlet valve;
- variable valve means for varying an opening characteristic of the inlet valve;
- and
- control means for providing fuel injection from the fuel injection means by dividing the fuel injection into first injection and second injection subsequent to the first injection, computing a first injection amount in the first injection, and computing a second injection amount in the second Injection based on a change in Intake air amount caused by an operation of the variable valve means after the computation of the first injection amount.
A method of controlling a fuel injection for an engine, which is provided with a fuel injection valve, an inlet valve, and a variable valve mechanism that is configured to vary an opening characteristic of the inlet valve, the method comprising the steps of:
- computing a first injection amount:
- providing first injection from the fuel injection valve based on the first injection amount;
- computing a second injection amount based on a change in intake air amount caused by an operation of the variable valve mechanism after the computation of the first injection amount;
- and
- providing second injection from the fuel injection valve based on the second injection amount after the first injection.
Dependencies are inferred from the claim text.