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:
May. 08, 2007
Filed:
Dec. 23, 2004
Applicants:
Hironori Ohhashi, Isesaki, JP;
Hiroshi Okada, Isesaki, JP;
Masato Kumagai, Isesaki, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 33/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A canister, a cut valve which closes a fresh air intake of the canister, and a pressure sensor which detects a pressure in a fuel vapor path shut off by closing a purge control valve and the cut valve are disposed at the inside of a fuel tank, and a fuel supply control unit which controls the cut valve and the purge control valve, and which carries out a leak diagnosis on the basis of a detected result of the pressure sensor is disposed at the inside of the fuel tank.