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:
Feb. 25, 2014
Filed:
Sep. 10, 2012
Applicant:
Yoshihide Kuroda, Obu, JP;
Inventor:
Yoshihide Kuroda, Obu, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B60R 16/027 (2006.01);
U.S. Cl.
CPC ...
Abstract
A power relay is provided in a power line, which supplies power from a power source to a motor through an inverter circuit, to shut off power supply from the power source to the inverter circuit when an abnormality arises. A microcomputer diagnoses a short-circuit failure of the power relay when a steering wheel is not steered during a normal control operation of assisting the steering operation of the steering wheel. An EPS shuts off power supply by the power relay when the steering wheel is not steered, so that the short-circuit failure of the power relay is diagnosed without affecting the assist operation for the steering wheel.