Device and method for controlling the amount of fuel supplied to an internal combustion engine
First Claim
1. A device for controlling an amount of fuel provided to an internal combustion engine having operating characteristics, the amount of fuel being controlled as a function of the operating characteristics, the device comprising:
- first means for receiving at least one first input signal indicative of an operating characteristic of the internal combustion engine;
second means for receiving a first temperature signal indicative of an intake air temperature of the internal combustion engine;
third means for receiving a second temperature signal indicative of an internal temperature of the internal combustion engine;
first means for generating a first output signal as a function of the first temperature signal;
second means for generating a second output signal as a function of the second temperature signal;
third means for generating a first weighting factor as a function of the at least one first input signal;
fourth means for generating a second weighting factor separately from the first weighting factor, as a function of the at least one first input signal;
first means for weighting the first output signal with the first weighting factor;
second means for weighting the second output signal with the second weighting factor;
means for determining a correction factor as a function of the weighted first and second output signals; and
means for correction factor correcting a load signal of the internal combustion engine as a function of the correction factor.
1 Assignment
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Accused Products
Abstract
A device and method for controlling the amount of fuel supplied to an internal combustion engine as a function of operating characteristics such as the pressure in the intake manifold, the engine speed, coolant temperature and intake air temperature, where a load signal formed from pressure and engine speed values is corrected by a correction factor FCORR as a function of the temperature, and when forming the correction factor FCORR, the influences of the engine temperature and/or the intake air temperature on the load sensing are weighted separately as a function of the operating point.
33 Citations
17 Claims
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1. A device for controlling an amount of fuel provided to an internal combustion engine having operating characteristics, the amount of fuel being controlled as a function of the operating characteristics, the device comprising:
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first means for receiving at least one first input signal indicative of an operating characteristic of the internal combustion engine; second means for receiving a first temperature signal indicative of an intake air temperature of the internal combustion engine; third means for receiving a second temperature signal indicative of an internal temperature of the internal combustion engine; first means for generating a first output signal as a function of the first temperature signal; second means for generating a second output signal as a function of the second temperature signal; third means for generating a first weighting factor as a function of the at least one first input signal; fourth means for generating a second weighting factor separately from the first weighting factor, as a function of the at least one first input signal; first means for weighting the first output signal with the first weighting factor; second means for weighting the second output signal with the second weighting factor; means for determining a correction factor as a function of the weighted first and second output signals; and means for correction factor correcting a load signal of the internal combustion engine as a function of the correction factor. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A device for controlling an amount of fuel supplied to an internal combustion engine having operating characteristics, the amount of fuel being regulated as a function of the operating characteristics, the device comprising:
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first means for receiving at least one first input signal indicative of the operating characteristics of the internal combustion engine; second means for receiving a first temperature signal from a first plurality of sensors, the first plurality of sensors detecting an instantaneous intake air temperature in the internal combustion engine; third means for receiving a second temperature from a second sensor, the second sensor detecting an instantaneous internal temperature in the internal combustion engine; fourth means for receiving a third temperature signal corresponding to a standard value for the intake air temperature of the internal combustion engine; fifth means for receiving a fourth temperature signal corresponding to a standard value for the internal temperature of the internal combustion engine; sixth means for receiving a fifth temperature signal indicative of a temperature difference across a wall of a combustion chamber in the internal combustion engine; first means for determining a first weighting factor as a function of an operating point of the internal combustion engine; second means for determining a second weighting factor separately from the first weighting factor, as a function of the operating point of the internal combustion engine; third means for determining an instantaneous charge temperature by weighting the first temperature signal with the second weighting factor to form a first result and adding the first result to a sum of the second and fifth temperature signal weighted with the second weighting factor; fourth means for determining a standard charge temperature by weighting the third temperature signal with the second weighting factor to form a second result and adding the second result to an average of a sum of the fourth and fifth temperature signal weighted with the first weighting factor; fifth means for determining a correction factor by dividing the standard charge temperature by the instantaneous charge temperature; and means for correcting a load signal of the internal combustion engine as a function of the correction factor. - View Dependent Claims (8, 9)
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10. A method for controlling an amount of fuel supplied to an internal combustion engine having operating characteristics, the amount of fuel being controlled as a function of the operating characteristics, the method comprising the steps of:
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receiving at least one first input signal indicative of an operating characteristic of the internal combustion engine; receiving a first temperature signal indicative of an intake air temperature in the internal combustion engine; receiving a second temperature signal indicative of an internal temperature in the internal combustion engine; generating a first output signal as a function of the first temperature signal; generating a second output signal as a function of the second temperature signal; determining a first weighting factor as a function of the at least one first input signal; determining a second weighting factor, separately from the determination of the first weighting factor, as a function of the at least one first input signal; weighting the first output signal with the first weighting factor; weighting the second output signal with the second weighting factor; determining a correction factor as a function of the weighted first output signal and the weighted second output signal; and correcting a load signal of the internal combustion engine as a function of the correction factor. - View Dependent Claims (11, 12, 13, 14)
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15. A method for controlling an amount of fuel supplied to an internal combustion engine having operating characteristics, the amount of fuel being regulated as a function of the operating characteristics, the method comprising the steps of:
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receiving at least one first input signal indicative of the operating characteristics of the internal combustion engine; receiving a first temperature signal from a first plurality of sensors, the first plurality of sensors detecting an instantaneous intake air temperature in the internal combustion engine; receiving a second temperature from a second sensor, the second sensor detecting an instantaneous internal temperature in the internal combustion engine; receiving a third temperature signal corresponding to a standard value for the intake air temperature of the internal combustion engine; receiving a fourth temperature signal corresponding to a standard value for the internal temperature of the internal combustion engine; receiving a fifth temperature signal indicative of a temperature difference across a wall of a combustion chamber in the internal combustion engine; determining a first weighting factor as a function of an operating point of the internal combustion engine; determining a second weighting factor separately from the first weighting factor, as a function of the operating point of the internal combustion engine; determining an instantaneous charge temperature by weighting the first temperature signal with the second weighting factor to form a first result and adding the first result to a sum of the second and fifth temperature signal weighted with the second weighting factor; determining a standard charge temperature by weighting the third temperature signal with the second weighting factor to form a second result and adding the second result to an average of a sum of the fourth and fifth temperature signal weighted with the first weighting factor; determining a correction factor by dividing the standard charge temperature by the instantaneous charge temperature; and correcting a load signal of the internal combustion engine as a function of the correction factor. - View Dependent Claims (16, 17)
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Specification