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. 02, 2010
Filed:
Jul. 09, 2008
Applicant:
Michael J. Cullen, Northville, MI (US);
Inventor:
Michael J. Cullen, Northville, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method to determine degradation of a humidity sensor used for controlling an engine of a vehicle, the humidity sensor exterior to a passenger compartment of the vehicle, the method comprising determining whether to enable monitoring of the sensor based on a duration since vehicle operation; and in response to a determination to enable monitoring, comparing a signal from a second humidity sensor to a signal from the humidity sensor exterior to said passenger compartment of the vehicle to determine whether either of sensors has degraded.