Ford Global Technolgoies, LLC

Mark Skilling

Nathan Morris

Ross Dykstra Pursifull

Michael James Uhrich

Joseph Lyle Thomas

David Oshinsky

Nicholas Dashwood Crisp

Chris Connelly

Methods and systems are provided for a fuel system. In one example, a method includes comparing a resistance of a solenoid coil of a direct injector to a threshold resistance. The method further includes selecting one of a transient or a steady-state pressure-based injector balancing (PBIB) model in response to the comparison.

Methods and systems for fuel injection control

Methods and systems are provided for continuously estimating a direct injector tip temperature based on heat transfer to the injector from the cylinder due to combustion conditions, and heat transfer to the injector due to flow of cool fuel from the fuel rail. Variations in the injector tip temperature from a steady-state temperature are monitored when the direct injector is deactivated. Upon reactivation, a fuel pulse width commanded to the direct injector is updated to account for a temperature-induced change in fuel density, thereby reducing the occurrence of air-fuel ratio errors.

A method and system for dealing with a change of mind event during an automatic shut-down of an enginehaving a dual mass flywheelis provided that reduces or eliminates the risk of excessive dual mass resonance during a restart of the engineis disclosed.

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Tonbridge, United Kingdom

Mark Skilling