公开(公告)号：US10352407B2

公开(公告)日：2019-07-16

申请号：US15821571

申请日：2017-11-22

申请人： Jezrah Horen ,  Douglas S. Burchett ,  Michael Foster

发明人： Jezrah Horen ,  Douglas S. Burchett ,  Michael Foster

IPC分类号： F16H3/66 ,  F16H3/44

摘要： A multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve at least nine forward speed ratios is disclosed. The plurality of planetary gearsets may include a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset. The plurality of selective couplers may include a number of clutches and a number of brakes. The multi-speed transmission may have four planetary gearsets and six selective couplers. The six selective couplers may include three clutches and three brakes.

公开(公告)号：US20180106334A1

公开(公告)日：2018-04-19

申请号：US15821571

申请日：2017-11-22

申请人： Jezrah Horen ,  Douglas S. Burchett ,  Michael Foster

发明人： Jezrah Horen ,  Douglas S. Burchett ,  Michael Foster

IPC分类号： F16H3/66

CPC分类号： F16H3/66 ,  F16H2003/445 ,  F16H2200/0069 ,  F16H2200/2012 ,  F16H2200/2046

摘要： A multi-speed transmission including a plurality of planetary gearsets and a plurality of selective couplers to achieve at least nine forward speed ratios is disclosed. The plurality of planetary gearsets may include a first planetary gearset, a second planetary gearset, a third planetary gearset, and a fourth planetary gearset. The plurality of selective couplers may include a number of clutches and a number of brakes. The multi-speed transmission may have four planetary gearsets and six selective couplers. The six selective couplers may include three clutches and three brakes.