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:
Nov. 20, 2012
Filed:
Mar. 06, 2009
Ross Dykstra Pursifull, Dearborn, MI (US);
Allan J. Lippa, Northville, MI (US);
John D. Russell, Portland, OR (US);
Gopichandra Surnilla, West Bloomfield, MI (US);
Joseph Norman Ulrey, Dearborn, MI (US);
Ross Dykstra Pursifull, Dearborn, MI (US);
Allan J. Lippa, Northville, MI (US);
John D. Russell, Portland, OR (US);
Gopichandra Surnilla, West Bloomfield, MI (US);
Joseph Norman Ulrey, Dearborn, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
Systems and methods are provided for monitoring reverse flow of fuel vapors and/or air through a vehicle fuel vapor recovery system, the fuel vapor recovery system coupled to an engine intake of a boosted internal combustion engine. One example method comprises, intermittently adjusting a restriction in the fuel vapor recovery system during boosted conditions, and indicating degradation based on one or more of a change in a pressure value, or based on a change in flow in the fuel vapor recovery system.