Method for ascertaining an error in a fuel metering unit of an injection system
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Abstract
A method for ascertaining an error in a fuel metering unit of an injection system for an internal combustion engine, wherein the gradients of a first signal representing a physical variable and of a second signal representing a physical variable are determined, and at a predefined magnitude and/or direction of the two gradients an error is recognized.
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Citations
20 Claims
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1-10. -10. (canceled)
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11. A method for ascertaining an error in a fuel metering unit of an injection system for an internal combustion engine, comprising:
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determining a first gradient of a first signal representing a physical variable and a second gradient of a second signal representing a physical variable; and recognizing an error at at least one of a predefined magnitude and a predefined direction of the first and second gradients. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A device for ascertaining an error in a fuel metering unit of an injection system for an internal combustion engine, comprising:
a control unit for determining a first gradient of a first signal representing a physical variable and a second gradient of a second signal representing a physical variable, and for recognizing an error at at least one of a predefined magnitude and a predefined direction of the first and second gradients.
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20. A computer-readable medium containing a computer program which, when executed by a processor, performs the following method for ascertaining an error in a fuel metering unit of an injection system for an internal combustion engine:
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determining a first gradient of a first signal representing a physical variable and a second gradient of a second signal representing a physical variable; and recognizing an error at at least one of a predefined magnitude and a predefined direction of the first and second gradients.
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Specification