Ford Global Technolgoies, LLC

Gregory Ziemba

Hafiz Shafeek Khafagy

Kirk Pebley

Ahmed Awadi

Eric Michael Rademacher

Daniel V Orzel

Hussam Makkiya

Attila Benak

Methods and systems are provided for adjusting a steering torque threshold for automatically stopping and starting a vehicle engine. In one example, a method may include, while the engine is running, determining a first steering torque threshold for inhibiting stop-start of the engine based on a steering wheel angle, and, while the engine is auto-stopped, determining a second steering torque threshold for inhibiting the stop-start based on the steering wheel angle and whether a static stop-start event is present or a rolling stop-start event is present. In this way, a non-linear hysteresis is provided for automatically stopping and starting the engine.

System and method for a stop-start engine

A vehicle includes an engine configured for autostop and autostart. The vehicle further includes an electric actuator for an active front steering system. Before the engine is autostopped, a controlled decrease in demand current for the electric actuator is initiated. After the engine is autostarted, a controlled increase in demand current for the electric actuator is initiated.

Active front steering current control for engine stop/start vehicles

A method for diagnosing operational performance of a secondary air system used in an internal combustion engine. The engine produces exhaust gases. The exhaust gases pass through a catalytic converter. The engine includes an exhaust gas oxygen sensor. The secondary air system introduces air into the exhaust gas after engine start-up. The oxygen sensor produces a feedback control signal during a feedback mode for adjusting engine operating air-fuel ratio, such feedback mode being initiated at a first time. The method determines from the signal produced by the exhaust gas oxygen sensor a second time relative to the first time when the oxygen sensor signal indicates that a predetermined exhaust gas air fuel ratio is produced. The operational performance of the secondary air system is diagnosed as a function of the determined second time.

Method and system for diagnosing a secondary air supply for an internal combustion engine

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Farmington Hills, MI, United States of America

Gregory Ziemba