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. 04, 2014
Filed:
Mar. 10, 2011
Ayumu Horiba, Saitama, JP;
Masakazu Kitamoto, Saitama, JP;
Junji Saiga, Saitama, JP;
Yoshikazu Kaneyasu, Saitama, JP;
Ayumu Horiba, Saitama, JP;
Masakazu Kitamoto, Saitama, JP;
Junji Saiga, Saitama, JP;
Yoshikazu Kaneyasu, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An evaporated fuel treatment apparatus includes a control valve having a dead zone range in which an evaporated fuel is blocked even if the opening angle is increased from a close position in opening direction and a communicating range in which the evaporated fuel is allowed to flow therethrough when opening angle is increased from the dead zone range. A control unit determines whether the opening angle is switched between the dead zone range and the communicating range. The switching is determined on the basis of a pressure inside the fuel tank detected with a pressure sensor and an air-fuel ratio detected by an air-fuel ratio sensor. A control valve installed in a communication path between a fuel tank and a canister is prevented from being seized.