发明授权
US07179185B2 Electrically variable transmission having three interconnected planetary gear sets, two clutches and at least two brakes
有权
具有三个互连的行星齿轮组,两个离合器和至少两个制动器的可变速传动装置
- 专利标题: Electrically variable transmission having three interconnected planetary gear sets, two clutches and at least two brakes
- 专利标题(中): 具有三个互连的行星齿轮组,两个离合器和至少两个制动器的可变速传动装置
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申请号: US11028843申请日: 2005-01-04
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公开(公告)号: US07179185B2公开(公告)日: 2007-02-20
- 发明人: Madhusudan Raghavan , Norman K. Bucknor , James D. Hendrickson
- 申请人: Madhusudan Raghavan , Norman K. Bucknor , James D. Hendrickson
- 申请人地址: US MI Detroit
- 专利权人: General Motors Corporation
- 当前专利权人: General Motors Corporation
- 当前专利权人地址: US MI Detroit
- 代理商 Kathryn A. Marra
- 主分类号: F16H3/72
- IPC分类号: F16H3/72
摘要:
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first, second and third differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and four or five selectable torque-transfer devices (two clutches and two or three brakes). The selectable torque transfer devices are engaged singly or in combinations of two to yield an EVT with a continuously variable range of speeds (including reverse) and four mechanically fixed forward speed ratios. The torque transfer devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.
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