Ford Global Technolgoies, LLC

Zena Yanqing Yee

Kenneth John Behr

Gladys Galicia

Imad Hassan Makki

Hassene Jammoussi

Stephen William Magner

Paul Mahlon Ranspach

Douglas Owen Toms

A method for adjusting an air-fuel ratio of a turbocharged engine that operates without blow though and with blow through is disclosed. In one example, the method provides a way to provide a feed forward fuel adjustment in the presence of engine blow though so that a closed loop controller does not have to exceed its range of control authority.

Method and system for compensating engine blow-through air

Methods and systems are provided for adjusting a voltage of a heated oxygen sensor (HEGO) so that the heated oxygen sensor is controlled to a desired temperature as the HEGO ages. In one example, a method generates a requested heated oxygen sensor electrode impedance for control and then adjusts the voltage responsive to the requested heated oxygen sensor electrode impedance for control.

Method and system for controlling an oxygen sensor

Methods and systems are provided for converting an asymmetric sensor response of an exhaust gas sensor to a symmetric response. In one example, a method includes adjusting fuel injection responsive to a modified exhaust oxygen feedback signal from an exhaust gas sensor, where the modified exhaust oxygen feedback signal is modified by transforming an asymmetric response of the exhaust gas sensor to a symmetric response. Further, the method may include adapting parameters of an anticipatory controller of the exhaust gas sensor based on the modified symmetric response.

Exhaust gas sensor controls adaptation for asymmetric type sensor degradation

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Beverly Hills, MI, United States of America

Zena Yanqing Yee