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. 14, 2006
Filed:
Sep. 30, 2004
Applicants:
Hajime Hosoya, Kanagawa, JP;
Masahiko Wakairo, Kanagawa, JP;
Inventors:
Hajime Hosoya, Kanagawa, JP;
Masahiko Wakairo, Kanagawa, JP;
Assignee:
Hitachi, Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 15/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
When an operation of internal combustion engine is stopped, the power consumption of a control unit is lowered, to measure an elapsed time. When the elapsed time reaches a standby time, the processing of lowering the power consumption is cancelled, to diagnose whether or not the leakage occurs in an evaporation purge line of a fuel vapor processing apparatus.