- 专利标题: Multi-mode electrically variable transmissions having two planetary gear sets with two fixed interconnections and clutched input
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申请号: US11238782申请日: 2005-09-29
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公开(公告)号: US20070072725A1公开(公告)日: 2007-03-29
- 发明人: Norman Bucknor , Madhusudan Raghavan
- 申请人: Norman Bucknor , Madhusudan Raghavan
- 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 and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and up to five selectable torque-transfer devices, and a dog clutch. 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 up to 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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