Primary clutch electronic CVT

摘要

A continuously variable transmission (CVT) is provided for use on a recreational or utility vehicle. The CVT is electronically controlled by at least one control unit of the vehicle. The CVT includes a primary clutch having a first sheave and a second sheave moveable relative to the first sheave. An actuator controls movement of the second sheave.

主权项

1. A method of controlling a continuously variable transmission of a vehicle carried out by at least one control unit, the vehicle including an engine operative to drive the continuously variable transmission, the method including:
determining a speed of the engine of the vehicle; detecting a throttle parameter; determining a clutch control variable based on an operator input device, the continuously variable transmission of the vehicle including a first clutch and a second clutch, the first clutch being moveable by an actuator to modulate a gear ratio of the continuously variable transmission; wherein the actuator is operated to move the first clutch from an initial position to the target position calculating a target engine speed based on the clutch control variable; detecting an acceleration rate of the vehicle; and calculating a target position of the first clutch of the continuously variable transmission based on the calculated target engine speed, the detected acceleration rate of the vehicle, and the determined speed of the engine; determining a target velocity of the first clutch based on the vehicle acceleration rate for a movement of the first clutch from the initial position to the target position, wherein the calculating the target position of the first clutch of the continuous variable transmission is further based on the target velocity.