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:
Oct. 24, 2017
Filed:
Nov. 07, 2014
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Douglas Raymond Martin, Canton, MI (US);
Gilbert Fournelle, Ypsilanti, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/22 (2006.01); F02D 41/18 (2006.01); F02D 41/00 (2006.01); F02M 35/10 (2006.01); F02M 35/104 (2006.01);
U.S. Cl.
CPC ...
F02D 41/221 (2013.01); F02D 41/18 (2013.01); F02D 41/0002 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/0414 (2013.01); F02M 35/104 (2013.01); F02M 35/10229 (2013.01); Y02T 10/40 (2013.01);
Abstract
Methods and systems are described for diagnosing degradation of a vacuum actuator in an engine system. An example method comprises indicating degradation of the vacuum actuator based on an estimate of flow of air into and out of a vacuum reservoir. The estimate is further based on flow of air generated via each of an aspirator in the intake system, an actuation of the vacuum actuator, and leakage during the actuation of the vacuum actuator.