Ford Global Technolgoies, LLC

Nicholas Sovis

Brien Lloyd Fulton

Frank M Korpics

Aaron John Oakley

Kirk Andrew Parrish

Joseph Goode

Sanket Anil Gujarathi

Dayton Brenner

Nicholas John Vella

Methods and systems are provided for identifying when an exhaust valve of an engine cylinder is not functioning as desired while the engine is being operated to raise a temperature of an exhaust system emissions control device, and in turn taking mitigating action. Thus, in one example a method comprises adjusting an amount of fuel that is provided to each of a plurality of cylinders of an engine during an exhaust stroke of the engine in response to an indication of degraded combustion stemming from a cylinder of the engine. In this way, the engine may continue to be operated to raise the temperature of the exhaust system emissions control device, while mitigating the issue of the degraded combustion.

Systems and methods for reducing exhaust valve degradation

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Ypsilanti, MI, United States of America

Nicholas Sovis