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:
Sep. 25, 2012
Filed:
Jul. 25, 2008
Naoto Tanaka, Okazaki, JP;
Shinya Toyoda, Nisshin, JP;
Naoya Inoue, Nagoya, JP;
Tadashi Tamura, Aichi-ken, JP;
Akira Hino, Toyota, JP;
Yasunari Matsui, Okazaki, JP;
Naoto Tanaka, Okazaki, JP;
Shinya Toyoda, Nisshin, JP;
Naoya Inoue, Nagoya, JP;
Tadashi Tamura, Aichi-ken, JP;
Akira Hino, Toyota, JP;
Yasunari Matsui, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An ECU executes a program including the steps of determining that a change speed solenoid is abnormal when a target speed ratio falls within a predetermined range, an upshift is recognized and the change speed solenoid is abnormal; determining that the change speed solenoid is normal when the change speed solenoid is not abnormal; determining that a belt pinch pressure solenoid is abnormal when the target speed ratio is substantially equal to a speed ratio γmin on a maximum speed-increase side and the target speed ratio is not substantially equal to an actual speed ratio; and determining that the belt pinch pressure solenoid is normal when the target speed ratio is substantially equal to the actual speed ratio.