Brooks Kushman P.C.
Method and system to manage driveline oscillations with clutch pressure control
A system and method for controlling a vehicle having an electric traction motor coupled to a transmission by a clutch include modifying torque transmitted to the driveline by modifying the clutch apply pressure in response to a difference between rotational speed of a driveline component and a filtered rotational speed of the driveline component to reduce driveline oscillation when the clutch is unlocked. The clutch pressure may be modified in response to a vehicle event that may otherwise induce driveline oscillations, such as a transmission ratio change or regenerative braking, for example.
Ford Global Technologies, LLC
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Seung-Hoon Bernard D. Daniel Scott Marvin Paul
Lee Nefcy Colvin Kraska