Invention Grant
US07957872B2 Shift control apparatus of a continuously variable transmission and method of determining whether shift control apparatus is operating normally 有权
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

Shift control apparatus of a continuously variable transmission and method of determining whether shift control apparatus is operating normally
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.
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