发明申请
- 专利标题: METHOD OF TESTING FRICTION COMPONENTS FOR AUTOMATIC TRANSMISSIONS
- 专利标题(中): 测试自动变速器摩擦部件的方法
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申请号: US10737319申请日: 2003-12-16
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公开(公告)号: US20050126272A1公开(公告)日: 2005-06-16
- 发明人: Yuji Fujii , Ted Snyder , Gregory Pietron , William Tobler
- 申请人: Yuji Fujii , Ted Snyder , Gregory Pietron , William Tobler
- 申请人地址: US MI Plymouth US MI Plymouth
- 专利权人: Ford Motor Company,Link Engineering Company
- 当前专利权人: Ford Motor Company,Link Engineering Company
- 当前专利权人地址: US MI Plymouth US MI Plymouth
- 主分类号: G01M13/02
- IPC分类号: G01M13/02 ; G01M99/00 ; G01M19/00
摘要:
A method of testing a friction component for a transmission that has first and second parts. The first part of the friction component is attached to a drive shaft and the second part is attached to a grounding element. The first part of the friction component is rotated until the drive shaft and the first part of the friction component rotate at a target sliding speed Vtarget. An actuation force is applied to the friction component at a time t0. Operation of the motor drive is continued to maintain the speed of rotation of the drive shaft at Vtarget until a predetermined level of engagement torque Tth is obtained. The motor torque is then reduced to a predetermined level Tm. The sliding speed of the drive shaft is then decreased and the test is terminated when the sliding speed falls to zero.
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