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:
Jul. 04, 2006
Filed:
Sep. 08, 2004
Akinori Osanai, Susono, JP;
Akinori Osanai, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A fuel tank is provided with an atmospheric air introduction hole so that the fuel tank communicates with the outside. As a result, the interior of the fuel tank is maintained at a pressure level between substantially atmospheric air pressure and positive pressure. A canister may be connected to the atmospheric air introduction hole. When an internal combustion engine starts up, the fuel tank communicates with an intake path. Internal combustion engine startup places the intake path under negative pressure. Under negative pressure, fuel vapor is supplied to the intake path from the fuel tank whose pressure level is between substantially atmospheric air pressure and positive pressure.