Fuel metering control system for internal combustion engine
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United States of America Patent
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Mar 4, 1997
Grant Date -
N/A
app pub date -
Dec 29, 1995
filing date -
Dec 30, 1994
priority date (Note) -
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Abstract
A fuel metering control system for an internal combustion engine including a feedback loop having an adaptive controller and an adaptation mechanism that estimates controller parameters .theta.. The adaptive controller calculates a feedback correction coefficient that corrects the quantity of fuel injection to bring a controlled variable obtained at least based on an output of an air/fuel ratio sensor, to a desired air/fuel ratio. The convergence speed of the controller parameters are determined by a gain matrix. The gain matrix is determined in response to at least one of the detected engine operating conditions.
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