Apparatus and methods for closed loop fuel control
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United States of America Patent
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Aug 1, 2006
Grant Date -
Apr 20, 2006
app pub date -
Oct 14, 2004
filing date -
Oct 14, 2004
priority date (Note) -
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Abstract
A method of controlling fuel input to an engine of a vehicle. A feedback signal is received from a sensor that senses engine exhaust. A dither signal having the same frequency as the feedback signal is applied to a fuel control signal controlling fuel to the engine. A proportional/integral correction is applied to the fuel control signal based on the frequency.
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