Continuously variable transmission and method of controlling the same

摘要

A transmission controller executes synchronization shift of shifting a variator in a direction opposite to a speed ratio change direction of a sub transmission mechanism when shifting a sub transmission mechanism. When a gear position of the sub transmission mechanism is at the second gear position and an output increase request of a power source is made, the transmission controller prohibits the synchronization shift and shifts only the sub transmission mechanism from a second gear position to a first gear position.

主权项

1. A continuously variable transmission comprising:
a variator which can continuously change a speed ratio; a sub transmission mechanism arranged in series with respect to the variator and including a first gear position and a second gear position whose speed ratio is smaller than the first gear position as gear positions; and a transmission controller configured to
shift the variator in a direction opposite to a speed ratio change direction of the sub transmission mechanism when shifting the sub transmission mechanism; andprohibit synchronization shift, and shift only the sub transmission mechanism from the second gear position to the first gear position when the gear position of the sub transmission mechanism is at the second gear position and an output increase request of a power source is made.