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:
Nov. 15, 2005
Filed:
Jul. 08, 2004
Applicants:
Hajime Hosoya, Atsugi, JP;
Satoru Watanabe, Atsugi, JP;
Inventors:
Hajime Hosoya, Atsugi, JP;
Satoru Watanabe, Atsugi, JP;
Assignee:
Hitachi, Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M037/04 ;
U.S. Cl.
CPC ...
Abstract
In a diagnosis control for periodically detecting a pressure in a fuel tank during an operation of an engine is stopped, to diagnose whether or not the leakage occurs in a fuel vapor purge system, the power supply to a sensor detecting the pressure in the fuel tank is intermittently performed at each detection period.