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:
Mar. 05, 2019
Filed:
Jun. 16, 2017
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Adam Nathan Banker, Canton, MI (US);
Amey Y. Karnik, Canton, MI (US);
Suzanne Kay Wait, Royal Oak, MI (US);
Jeffrey Allen Doering, Canton, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 11/02 (2006.01); F02D 41/00 (2006.01); F02M 35/10 (2006.01); F02D 13/06 (2006.01); F02D 17/02 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0087 (2013.01); F02D 11/02 (2013.01); F02D 13/06 (2013.01); F02D 17/02 (2013.01); F02M 35/10386 (2013.01); F02D 2041/0012 (2013.01); F02D 2200/0402 (2013.01); F02D 2200/0406 (2013.01);
Abstract
Methods and systems are provided for monitoring torque delivery in a variable displacement engine using air flow metered via a throttle body model. During conditions when air flow estimation can be inaccurate, such as at wide open throttle, an induction ratio applied to the engine is constrained to 1.0, even if the operator torque demand is low. VDE degradation is inferred based on the commanded induction ratio relative to an actual induction ratio estimated based on the torque delivery.