Title:
MULTI-MODE TRANSMISSION INCLUDING A CONTINUOUSLY VARIABLE TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2017/177359
Kind Code:
A1
Abstract:
A transmission includes a continuously variable unit (CVU) (20) arranged in parallel with an expansion gearset (120). The CVU (20) includes a first pulley (22) that is rotatably coupled to a second pulley (24) and an input member (12). The expansion gearset (120) includes a planetary gearset (130) that is arranged in series with a coplanar second gearset (140), and the second gearset (140) includes a first gear (142) engaged with a layshaft gear (144). The second pulley (24) is rotatably couplable to the first gear (142) of the second gearset (140). The layshaft gear (144) is engaged with a ring gear (136) and a carrier member (134) which is rotatably couplable to an output member (14). The first pulley (22) is rotatably couplable to the sun gear (132) via a first clutch (115). The transmission operates in a continuously variable mode when the first clutch (115) is deactivated, and operates in a power split mode when the first clutch (115) is activated.
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Inventors:
YAO JIAN (CN)
SAMIE FARZAD (US)
HUANG YING (CN)
DUAN CHENGWU (CN)
SAMIE FARZAD (US)
HUANG YING (CN)
DUAN CHENGWU (CN)
Application Number:
PCT/CN2016/078952
Publication Date:
October 19, 2017
Filing Date:
April 11, 2016
Export Citation:
Assignee:
GM GLOBAL TECH OPERATIONS LLC (US)
International Classes:
F16H37/08
Foreign References:
| US20020094911A1 | 2002-07-18 | |||
| US5916053A | 1999-06-29 | |||
| US20080171626A1 | 2008-07-17 | |||
| US20090250278A1 | 2009-10-08 | |||
| JPH116554A | 1999-01-12 | |||
| CN102758896A | 2012-10-31 |
Attorney, Agent or Firm:
LIU, SHEN & ASSOCIATES (CN)
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