发明授权
- 专利标题： Method of testing friction components for automatic transmissions
- 专利标题（中）： 自动变速器摩擦部件的测试方法
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申请号： US10737319申请日： 2003-12-16
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公开(公告)号： US06923049B2公开(公告)日： 2005-08-02
- 发明人: Yuji Fujii , Ted Duane Snyder , Gregory Michael Pietron , William Emil Tobler
- 申请人： Yuji Fujii , Ted Duane Snyder , Gregory Michael Pietron , William Emil Tobler
- 申请人地址： US MI Plymouth
- 专利权人： Link Engineering Company
- 当前专利权人： Link Engineering Company
- 当前专利权人地址： US MI Plymouth
- 代理机构： Brooks Kushman P.C.
- 主分类号： G01M13/02
- IPC分类号： G01M13/02 ; G01M99/00
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.