- 专利标题: CONTINUOUSLY VARIABLE TRANSMISSION WITH WEDGE ACTUATION MECHANISM
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申请号: US15829259申请日: 2017-12-01
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公开(公告)号: US20180080529A1公开(公告)日: 2018-03-22
- 发明人: Jian Yao , Chengwu Duan , Chunhao J. Lee , Derek F. Lahr , Farzad Samie
- 申请人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 申请人地址: US MI Detroit
- 专利权人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 当前专利权人: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- 当前专利权人地址: US MI Detroit
- 主分类号: F16H9/18
- IPC分类号: F16H9/18 ; F16H61/662 ; F15B15/12 ; F16H57/04
摘要:
A powertrain has a continuously variable transmission including a shaft rotatable about an axis. The CVT further comprises a variator assembly that includes a pulley supported on the shaft. The pulley has a movable sheave with a ramp surface. The movable sheave is axially movable on the shaft. The variator assembly also includes an endless rotatable device frictionally engaged with the movable sheave. An actuator mechanism includes a wedge component supported on the shaft. The wedge component has a wedge surface that automatically engages the ramp surface when torque on the shaft is in a first direction. The wedge surface applies a wedge force on the ramp surface. The actuator mechanism further includes an actuator that is operatively connected to the movable sheave and is activatable to apply a force on the movable sheave.