Invention Grant
- Patent Title: Shift control apparatus of a continuously variable transmission and method of determining whether shift control apparatus is operating normally
- Patent Title (中): 无级变速器的变速控制装置及判定变速控制装置是否正常运转的方法
-
Application No.: US12484619Application Date: 2009-06-15
-
Publication No.: US07957872B2Publication Date: 2011-06-07
- Inventor: Naoto Tanaka , Shinya Toyoda , Akira Hino , Yasunari Matsui
- Applicant: Naoto Tanaka , Shinya Toyoda , Akira Hino , Yasunari Matsui
- Applicant Address: JP Toyota-shi
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota-shi
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-161276 20080620
- Main IPC: G06F19/00
- IPC: G06F19/00

Abstract:
The invention provides a shift control apparatus of a continuously variable transmission, which includes a feedback control portion which executes feedback control that brings an actual speed ratio close or equal to a target speed ratio, and a normal operation determining portion which determines whether the shift control apparatus is operating normally based on a difference between the actual speed ratio and the target speed ratio, and an amount of change in the actual speed ratio and an amount of change in the target speed ratio during a predetermined interval.
Public/Granted literature
Information query