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:
Dec. 25, 2018
Filed:
Sep. 12, 2017
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Hiroki Mima, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
A solenoid is determined abnormal if a current flowing therethrough at a certain duty ratio falls within an abnormal range. After the abnormal determination, a first duty ratio is used to cause a current to flow through the solenoid at such a current value within a first range as to not drive the solenoid valve. The solenoid is determined provisionally normal if the current at the first duty ratio falls within the first range. After the provisionally normal determination, a second duty ratio is used to cause a current to flow through the solenoid at such a current value within a second range including a current value range greater than the first range as to drive the solenoid valve. The solenoid is determined normal if the current at the second duty ratio falls within the second range.