Method and apparatus to control an exhaust gas sensor to a predetermined termperature

Method and apparatus to control an exhaust gas sensor to a predetermined termperature

The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems to achieve and then maintain the sensor at the target operating temperature. The mechanization includes a...

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Hauptverfasser: Smith, James Craig, Moore, Wayne Richard, Foster, Matthew G
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Sprache:eng
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creator Smith, James Craig
Moore, Wayne Richard
Foster, Matthew G
description The invention provides a control strategy and a control system to control a gas sensor to a target operating temperature. It relies upon both feedback and model-based feedforward control systems to achieve and then maintain the sensor at the target operating temperature. The mechanization includes a gas sensor with a heating element in a feedstream. The control strategy employs a control system for the heating element that is based upon the target operating temperature, the temperature of the heating element, and an effect of the feedstream and mounting structure on the temperature of the sensor. The control strategy enables the control system to optimize the heating of a sensor during warm-up and steady state operations.
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title Method and apparatus to control an exhaust gas sensor to a predetermined termperature
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