公开(公告)号：US20150308551A1

公开(公告)日：2015-10-29

申请号：US14261053

申请日：2014-04-24

Applicant: GM Global Technology Operations LLC

Inventor： Edward W. Mellet ,  CRAIG S. ROSS ,  CHUNHAO J. LEE

IPC: F16H37/02

CPC classification number: F16H37/022 ,  F16H3/66 ,  F16H3/663 ,  F16H3/666 ,  F16H2003/442 ,  F16H2037/023 ,  F16H2037/026 ,  F16H2200/2005 ,  F16H2200/2007 ,  F16H2200/2023 ,  F16H2200/2041

Abstract: A three mode continuously variable transmission (CVT) for a motor vehicle includes an optional speed change device connected to a pulley and a belt assembly or other continuously variable unit. The pulley and belt assembly is also connected to a planetary gear set arrangement. The planetary gear set arrangement generally includes two planetary gear sets, two brakes and two clutches. The planetary gear set arrangement is connected to a final drive unit. Engagement of the clutches and brakes provides three modes of operation to the CVT.

Abstract translation: 用于机动车辆的三模式无级变速器（CVT）包括连接到滑轮和皮带组件或其它连续可变单元的可选变速装置。 滑轮和皮带组件也连接到行星齿轮组装置。 行星齿轮组装置通常包括两个行星齿轮组，两个制动器和两个离合器。 行星齿轮组装置连接到最终驱动单元。 离合器和制动器的接合为CVT提供了三种操作模式。