Fuel controller for an internal combustion engine
First Claim
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1. A fuel supply controller for an internal combustion engine comprising:
- a fuel injector which supplies fuel to a cylinder of an engine;
detecting means for detecting the operating state of the engine; and
a control unit including calculating means for calculating the appropriate amount of fuel to be supplied to the engine based on the detected engine operating state, fuel injector control means for driving said fuel injector subsequent to the fuel amount calculation for the length of time adequate to supply the calculated amount of fuel to the cylinder, and timing advance means for simultaneously advancing the start of fuel injection by said fuel injector by a prescribed amount and advancing the fuel amount calculation by substantially the same amount when the detected engine operating sate satisfies a prescribed condition so that a time delay between the fuel amount calculation and the fuel injection is substantially constant.
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Abstract
A fuel controller for an internal combustion engine has a control unit which calculates the amount of fuel to be supplied to the engine by fuel injectors and drives the fuel injectors with a prescribed timing. The timing of the fuel injection is advanced at high engine speeds. The fuel injection timing is set such that the fuel injection is performed substantially in synchrony with the calculation of the amount of fuel to be supplied even when the fuel injection timing is advanced.
11 Citations
11 Claims
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1. A fuel supply controller for an internal combustion engine comprising:
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a fuel injector which supplies fuel to a cylinder of an engine; detecting means for detecting the operating state of the engine; and a control unit including calculating means for calculating the appropriate amount of fuel to be supplied to the engine based on the detected engine operating state, fuel injector control means for driving said fuel injector subsequent to the fuel amount calculation for the length of time adequate to supply the calculated amount of fuel to the cylinder, and timing advance means for simultaneously advancing the start of fuel injection by said fuel injector by a prescribed amount and advancing the fuel amount calculation by substantially the same amount when the detected engine operating sate satisfies a prescribed condition so that a time delay between the fuel amount calculation and the fuel injection is substantially constant. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A fuel control method for an internal combustion engine comprising:
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detecting the operating state of an engine; calculating the amount of fuel to be supplied to the engine on the basis of the detected operating state; injecting the calculated amount of fuel into a cylinder of the engine with a prescribed timing subsequent to the calculation of the amount of fuel; and simultaneously advancing the start of fuel injection by said fuel injector by a prescribed amount when the detected engine operating state satisfies a prescribed condition and advancing the fuel amount calculation by substantially the same amount so that a time delay between the fuel amount calculation and the fuel injection is substantially constant. - View Dependent Claims (8, 9, 10, 11)
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Specification