Shift control for continuously-variable transmission

Details Shift control for continuously-variable transmission Shift control for continuously-variable transmission

2006-03-14

2006-03-14

Pang, Roger (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

C477S120000, C477S905000

Reexamination Certificate

active

07011602

ABSTRACT:
A shift control apparatus for a continuously-variable transmission includes a controller for controlling a transmission ratio in a normal mode in accordance with a sensed vehicle speed and a sensed accelerator operation condition. The controller determines a second-mode downshift characteristic and a second-mode upshift characteristic in accordance with a driver's acceleration demand; and controls the transmission ratio in a kickdown shift control mode in response to a driver's acceleration request by performing a downshift operation to a target downshift transmission ratio determined according to the second-mode downshift characteristic and an upshift operation according to the second mode upshift characteristic.

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