Method and apparatus for controlling an engine disconnect clutch in a powertrain system
AssigneeGM Global Technology Operations LLC
InventorsJy-Jen F. Sah, Anthony H. Heap, Lawrence A. Kaminsky
Life of this patent
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Abstract
A powertrain system includes an internal combustion engine configured to transfer torque via a clutch to an input member of a hybrid transmission having torque machines configured to transfer torque thereto. Operation of the engine is controlled to facilitate a change in activation of a clutch between the engine and the input member of the hybrid transmission.
Claims16
Method for controlling a powertrain system including an internal combustion engine configured to transfer torque via a clutch to an input member of a hybrid transmission having torque machines configured to transfer torque thereto, the method consisting of:
- controlling operation of the engine to facilitate a change in activation of a clutch between the engine and the input member of the hybrid transmission, comprising managing a reactive torque load across the clutch by modifying an engine torque command to achieve a balance between a torque output of the internal combustion engine and a torque output of the torque machines.
Method for controlling a powertrain system including an internal combustion engine configured to transfer torque via activation of a clutch to an input member of a hybrid transmission having torque machines configured to transfer torque thereto, the method comprising:
- commanding a change in activation of the clutch;
- controlling operations of the torque machines to generate an output torque at an output member of the hybrid transmission responsive to an operator torque request;
- and
- coincidently controlling operation of the engine to achieve the change in activation of the clutch between the engine and the input member of the hybrid transmission, comprising managing a reactive torque load across the clutch by modifying an engine torque command to achieve a balance between a torque output of the internal combustion engine and a torque output of the torque machines.
Method for controlling a powertrain system including an engine couplable via an engine disconnect clutch to a hybrid transmission, comprising:
- controlling the engine to generate an input torque responsive to achieving a change in activation of the engine disconnect clutch, comprising managing a reactive torque load across the engine disconnect clutch by modifying an engine torque command to achieve a balance between a torque output of the internal combustion engine and a torque output of the torque machines;
- and
- coincidently controlling operations of torque machines to generate an output torque at an output member of the hybrid transmission responsive to an operator torque request.
Dependencies are inferred from the claim text.