发明申请
- 专利标题: Electrically variable transmission having two planetary gearsets
- 专利标题(中): 具有两个行星齿轮组的电动变速器
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申请号: US11112130申请日: 2005-04-22
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公开(公告)号: US20060240928A1公开(公告)日: 2006-10-26
- 发明人: Madhusudan Raghavan , Norman Bucknor , James Hendrickson
- 申请人: Madhusudan Raghavan , Norman Bucknor , James Hendrickson
- 主分类号: F16H3/72
- IPC分类号: F16H3/72 ; F16H37/06 ; F16H3/44
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 five selectable torque-transfer devices (two clutches and three brakes). The selectable torque transfer devices are engaged singly or in combinations of two or three to yield an EVT with a continuously variable range of speeds (including reverse) and up to three 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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