发明授权
- 专利标题: Electrically variable transmission with improved gradeability
- 专利标题(中): 电动变速箱具有改进的分级性能
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申请号: US11131877申请日: 2005-05-18
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公开(公告)号: US07220202B2公开(公告)日: 2007-05-22
- 发明人: Tejinder Singh , Henryk Sowul , James D. Hendrickson
- 申请人: Tejinder Singh , Henryk Sowul , James D. Hendrickson
- 申请人地址: US MI Detroit
- 专利权人: GM Global Technology Operations, Inc.
- 当前专利权人: GM Global Technology Operations, Inc.
- 当前专利权人地址: US MI Detroit
- 代理商 Christopher DeVries
- 主分类号: F16H3/72
- IPC分类号: F16H3/72
摘要:
The present invention provides an electrically variable transmission having two motor/generators, two differential gear sets such as planetary gear sets, and five torque transfer devices arranged to provide improved launch, performance and gradeability, and enabling five fixed speed ratios. An input member is continuously connected to one member (preferably a ring gear) of the first planetary gear set, and an output member is continuously connected to one member (preferably a carrier) of the second planetary gear set. One motor/generator is continuously connected to another member (preferably a sun gear) in the first planetary gear set as well as being selectively connected to a member (preferably a ring gear) of the second planetary gear set. The second motor/generator is continuously connected to the remaining member (preferably a sun gear) of the second planetary gear set, and is selectively connected to the remaining member (preferably a carrier) of the first planetary gear set.
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