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. 03, 2009
Filed:
Feb. 08, 2007
Toshiki Annoura, Nagoya, JP;
Toshiki Annoura, Nagoya, JP;
DENSO Corporation, Kariya, JP;
Abstract
A fuel vapor treatment system is disclosed for a vehicle engine having a leak check device. When a leak is not detected by the leak check device and when a leak is detected but it is determined by a reliability determining device that fuel status determined by a second fuel status determining device is reliable, an air-fuel ratio controlling device switches which to use, a fuel status determined by a first fuel status determining device or a fuel status determined by the second fuel status determining device, based on the operating state of the vehicle. Also, when it is determined by the reliability determining device that the fuel status determined by the second fuel status determining device is unreliable, the air-fuel ratio controlling device uses the fuel status determined by the first fuel status determining device for the fuel status for controlling injection quantity regardless of vehicle operating state.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile