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:
Jan. 30, 2018
Filed:
Oct. 28, 2013
Honda Motor Co., Ltd., Minato-ku, Tokyo, JP;
Ayumu Horiba, Saitama, JP;
Mahito Shikama, Saitama, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
The objective of the present invention is to provide an evaporated fuel treatment device capable of performing a function diagnosis of a sealing valve with high accuracy even if an internal combustion engine is in operation. The evaporated fuel treatment device includes a sealing valve that blocks a fuel tank from the atmosphere, a canister, a canister internal pressure detection unit, a control part that performs an instruction for opening or closing the sealing valve and controls a purge, and a diagnostic part that performs a function diagnosis of an evaporated fuel sealing system including the fuel tank, the canister, and the sealing valve. The diagnostic part performs the function diagnosis of the sealing valve based on whether or not a canister internal pressure detected by the canister internal pressure sensor varies beyond a predetermined range.