Invention Grant
- Patent Title: Method of controlling transmission in neutral
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Application No.: US16525138Application Date: 2019-07-29
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Publication No.: US11041534B2Publication Date: 2021-06-22
- Inventor: Stephen Michael Cicala , Markian Oleh Diakiw , Conor Edward Sullivan , Dongdong Dee Li , Timothy Fedullo , Bradley Dean Riedle , Scott Joseph Gittins , Peter Wincek
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: Brooks Kushman P.C.
- Agent Vincent Mastrogiacomo
- Main IPC: F16D48/06
- IPC: F16D48/06 ; F16H61/04 ; F16H63/48

Abstract:
Ideally, when a transmission is in Neutral, no torque should be exerted on the vehicle wheels by the powertrain. However, even with all clutches in a gearbox disengaged, some torque may be transmitted from a turbine shaft to the transmission output due to clutch drag and transmission component inertia. To avoid transmitting torque, a subset of clutches may be engaged to produce an input tie-up state, this holding the turbine shaft against rotation while permitting rotation of the output element.
Public/Granted literature
- US20200032864A1 METHOD OF CONTROLLING TRANSMISSION IN NEUTRAL Public/Granted day:2020-01-30
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