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:
Jun. 21, 2005
Filed:
Dec. 09, 2003
Applicant:
Hajime Hosoya, Atsugi, JP;
Inventor:
Hajime Hosoya, Atsugi, JP;
Assignee:
Hitachi, Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M015/00 ;
U.S. Cl.
CPC ...
Abstract
When a fuel pressure on the downstream side of a fuel pump for an internal combustion engine is less than a slice level, it is judged whether or not an applied voltage on a motor unit and/or the power consumption in the motor unit are normal. In the case where the motor unit is not failed, it is estimated that the pump unit is failed.