CONTINUOUSLY VARIABLE TRANSMISSION CONTROL METHOD AND CONTROL DEVICE

This continuously variable transmission control method detects the magnitude of an acceleration request, and if the acceleration request exceeds a preset threshold, controls the shift ratio by switching from a first shift mode in which the target shift ratio is changed to continuously variable to a second shift mode in which a change to a stepped target shift ratio is included. When executing the second shift mode, the target engine speed is set in accordance with the magnitude of the acceleration request, and upon starting acceleration, a stepped downshift that lowers the target shift ratio in a stepped manner is executed in accordance with the target engine speed, and the target engine speed is maintained for a prescribed period after execution of the stepped downshift. 本发明的无级变速器的控制方法，对加速请求的大小进行检测，在加速请求超过预先设定的阈值的情况下，从对目标变速比无级地变更的第1变速模式向包含阶梯式的目标变速比的变更在内的第2变速模式切换而对变速比进行控制。而且，在执行第2变速模式时，根据加速请求的大小而设定目标发动机旋转速度，在加速开始时，执行根据目标发动机旋转速度而使目标变速比阶梯式地降低的阶梯式降挡，并且将执行阶梯式降挡之后的目标发动机旋转速度保持规定期间。