Device and method of controlling exhaust gas sensor temperature, and recording medium for exhaust gas sensor temperature control program
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United States of America Patent
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Aug 3, 2010
Grant Date -
Mar 26, 2009
app pub date -
Nov 21, 2008
filing date -
Jul 22, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A control input (DUT) for controlling a heater (13) which heats an active element (10) of an exhaust gas sensor (8) includes at least one of another component depending on the difference between temperature data of the active element (10) and a target temperature, a component depending on the target temperature, and a component depending on the temperature data of the active element (10). The control input is determined by an optimum control algorithm. A component depending on the temperature of an exhaust gas and the component depending on the target temperature are determined based on a predictive control algorithm. The temperature of the active element (10) of the exhaust gas sensor (8) is thus controlled stably at a desired temperature.
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