Stufenlos verstellbares Getriebe und zugehöriges Steuerungsverfahren

摘要

When a through speed ratio, which is an overall speed ratio of a variator (20) and a subtransmission mechanism (30), varies from a larger speed ratio than a mode switch speed ratio to a smaller speed ratio than the mode switch speed ratio, a gear position of the subtransmission mechanism (30) is changed from a first gear position to a second gear position. The mode switch speed ratio is set at a through speed ratio obtained when the speed ratio of the variator (20) is a Highest speed ratio and the gear position of the subtransmission mechanism (30) is the first gear position.