Method and device for operating an internal combustion engine
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United States of America Patent
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Dec 2, 2008
Grant Date -
Sep 21, 2006
app pub date -
Mar 2, 2006
filing date -
Mar 21, 2005
priority date (Note) -
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Abstract
A method and a device for operating an internal combustion engine which allow monitoring of errors during combustion without using a pressure sensor are provided. The internal combustion engine includes a final controlling element in an exhaust system of the internal combustion engine and a signal production unit for producing a signal as a function of a setting of the final controlling element. The signal is analyzed for a characteristic property of the signal. A value for the characteristic property of the signal is compared to a predefined value. An error is recognized as a function of a deviation of the value for the characteristic property of the signal from the predefined value during a fired operation of the internal combustion engine.
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