Method and system for providing fuel injection time scheduling for internal combustion engines using engine speed prediction
First Claim
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1. A method for determining fuel injection lime scheduling in an internal combustion engine, comprising:
- measuring engine speed; and
calculating a time for fuel injection into the engine using a prediction of engine speed at the time of such fuel injection, such prediction of engine speed being the measured engine speed plus a projected change in engine speed, such projected change in engine speed being a function of cylinder event firing number and the measured engine speed.
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Abstract
A system and process for determining fuel injection time scheduling in an internal combustion engine. The system and method uses a prediction of engine speed to compensate for the errors due to rapid speed change in fuel injection during crank/start and engine speed transition like engine tip-in and tip-out.
22 Citations
16 Claims
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1. A method for determining fuel injection lime scheduling in an internal combustion engine, comprising:
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measuring engine speed; and
calculating a time for fuel injection into the engine using a prediction of engine speed at the time of such fuel injection, such prediction of engine speed being the measured engine speed plus a projected change in engine speed, such projected change in engine speed being a function of cylinder event firing number and the measured engine speed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for determining fuel injection time scheduling in an internal combustion engine, such system comprising:
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a fuel injector;
a processor for calculating a time of fuel injection for the fuel injector to inject such, fuel into engine using a prediction of engine speed at the time of such fuel injection such prediction of engine speed being measured engine speed plus a projected change in such measured engine speed, such projected change in engine speed being a function of cylinder event firing number and the measured engine speed. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method for determining fuel injection quantity and injection timing for an internal combustion engine, comprising:
calculating the fuel injection quantity and the time for fuel injection into the engine using a prediction of engine speed at the time of such fuel injection, such prediction of engine speed being measured engine speed plus a projected change in such measured engine speed, such projected change in engine speed being a function of cylinder event firing number and the measured engine speed. - View Dependent Claims (16)
Specification