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US 11,808,314 B2Granted
Method of disengaging a clutching device and electric driveline
AssigneeDana Belgium N.V.
InventorFabrice Boon
Life of this patent
Estimating the term…
Abstract
The present document relates to a method of disengaging a clutching device. The method comprises sweeping an output torque of an electric motor drivingly connected to the clutching device such that a torque transmitted by the clutching device vanishes at least temporarily during the sweep, and disengaging the clutching device during the sweep. The present document further relates to an electric driveline for carrying out the method.
Claims15
A method of disengaging a clutching device, the method comprising:
- sweeping an output torque of an electric motor drivingly connected to the clutching device such that a torque transmitted by the clutching device vanishes at least temporarily during the sweep, and
- disengaging the clutching device during the sweep;
- wherein the output torque of the electric motor is reduced to zero when or once an acceleration of the electric motor following disengagement of the clutching device exceeds a predetermined threshold.
An electric driveline, including:
- an electric motor,
- a clutching device drivingly connected to the electric motor, and
- a control unit with instructions stored in memory configured to sweep an output torque of the electric motor such that a torque transmitted by the clutching device vanishes at least temporarily during the sweep, and configured to disengage the clutching device during the sweep;
- wherein the control unit is further configured to estimate, before or right before the sweep, the torque transmitted by the clutching device at zero output torque of the electric motor, and to sweep the output torque across an output torque value having a magnitude which corresponds to the magnitude of the estimated torque transmitted by the clutching device at zero output torque of the electric motor.
1 more element
An electric driveline of a vehicle, including:
- an electric motor configured to drive a wheel of the vehicle,
- a clutching device drivingly connected to the electric motor having one or more position sensors in communication with a control unit, and
- the control unit with instructions stored in memory configured to sweep an output torque of the electric motor such that a torque transmitted by the clutching device vanishes at least temporarily during the sweep, and configured to disengage the clutching device during the sweep, wherein sweeping the output torque of the electric motor includes continuously and monotonously increasing and decreasing the output torque of the electric motor.
Dependencies are inferred from the claim text.