Ford Global Technolgoies, LLC

David Lew

John Eric Rollinger

Scott Steadmon Thompson

Nicholas Herhusky

Alex O'Connor Gibson

Alexander O'Connor Gibson

Vincent Martinez

David Hancock

Adam J Richards

James M Basile

David Spuller

Veronica Pablo Osorio

Systems and methods for supplying electrical power between two electric energy storage devices are disclosed. In one example, an electric isolation switch is held open after engine starting until a voltage of a first electric energy storage device and a voltage of a second electric energy storage device are within a threshold voltage of at least one predetermined voltage level.

Vehicle electrical system and methods

Methods and systems are provided for controlling a high power output direct current to alternating current converter for a vehicle. In one example, a method may include at a vehicle-on event, automatically operating the converter in a first power output mode, and transitioning to a different mode of operation in response to a transition request being received at a controller of the vehicle. In this way, the different mode of operation may be subject to confirmation via an operator of the vehicle, which may improve operational performance of the direct current to alternating current converter.

Systems and methods for controlling a high-output DCAC inverter on a vehicle

Methods and systems are provided for adjusting engine cranking. In one example, a method for an engine cold start may include extending engine cranking at least based on one or more engine cold start conditions, where extending engine cranking may increase an engine oil pressure in a plurality of camshaft phaser cavities of a variable camshaft timing (VCT) phaser. In some examples, the method may further include, after engine cranking, enabling fueling. In this way, fuel efficiency considerations may be balanced with increases to the engine oil pressure such that components of the VCT phaser may be actuated and/or lubricated.

Methods and systems for engine cranking

A method for operating a vehicle that includes a DC/DC converter is described. In one example, the method includes adjusting an output voltage of the DC/DC converter to increase torque of a belt integrated starter/generator. The output voltage of the DC/DC converter may be adjusted before and during engine cranking.

Methods and system for operating a vehicle having a DC/DC converter

Systems and methods for operating a vehicle that includes an engine and an electric machine are described. In one example, a speed of the engine may be adjusted so that the engine provides power to drive the electric machine without generating numerous rapid engine speed changes in a short amount of time.

Methods and system for determining engine speed

Systems and methods for operating a powertrain or driveline that includes an engine and a belt integrated starter/generator are described. In one example, the belt integrated starter/generator is used to start an engine unless vehicle operating conditions indicate that the belt integrated starter/generator may be having difficulty starting the engine.

Methods and system for engine starting

Systems and methods for operating a vehicle that includes an engine and an electric machine are described. In one example, operation of the engine may be adjusted to compensate for conditions when carbon deposits may build on one or more engine spark plugs. The engine adjustments may help to remove carbon deposits from the engine's spark plugs.

Methods and system for reducing a possibility of spark plug fouling

Methods and systems are provided for identifying degradation of a belt-driven integrated starter generator (BISG) active belt tensioner coupled to a vehicle engine. By using the monitored change in FEAD load to compare the actual state of the tensioner (either in retracted or extended state) relative to the commanded state, the presence of excess belt tension may be distinguished from the presence of insufficient belt tension. Timely diagnosis of a belt tensioner may be improve belt health and extend fuel economy benefits of a BISG system.

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Canton, MI, United States of America

David Lew