The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2012
Filed:
Oct. 11, 2011
Dave Charles Weber, Toledo, OH (US);
David John Kubinski, Canton, MI (US);
Chuan He, Northville, MI (US);
Michiel J. Van Nieuwstadt, Ann Arbor, MI (US);
Dave Charles Weber, Toledo, OH (US);
David John Kubinski, Canton, MI (US);
Chuan He, Northville, MI (US);
Michiel J. Van Nieuwstadt, Ann Arbor, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Various systems and methods are described for controlling an engine in a vehicle in response to an equilibrium value of an exhaust gas constituent generated from an exhaust gas sensor. One example method comprises during engine fueling below a threshold amount where at least one intake valve and one exhaust valve of the engine are operating: generating an equilibrium value of an exhaust gas constituent reading of the exhaust gas sensor, the equilibrium value based on a trajectory of the exhaust gas constituent reading, and under selected engine combusting conditions, adjusting the sensor signal based on the equilibrium value.