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:
Feb. 07, 2017
Filed:
Dec. 03, 2013
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Troy Fischer, Novi, MI (US);
Jayne Froney, Livonia, MI (US);
Randall J. Houston, Royal Oak, MI (US);
Brian D. Rutkowski, Ypsilanti, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
G01R 31/02 (2006.01); G01R 19/165 (2006.01); G01R 31/00 (2006.01); G01M 15/04 (2006.01); F01P 5/14 (2006.01); F01P 11/18 (2006.01);
U.S. Cl.
CPC ...
G01R 19/16533 (2013.01); F01P 5/14 (2013.01); F01P 11/18 (2013.01); G01M 15/042 (2013.01); G01R 31/006 (2013.01);
Abstract
Methods and systems are described for diagnosing a multiple speed, relay controlled engine cooling fan system. One method includes measuring the change in current drawn from a battery-alternator system when fan speed is modified. A degradation in cooling fan operation is flagged when measured current change differs from an expected change.