Method and apparatus for controlling a multi-mode powertrain system
AssigneeGM Global Technology Operations LLC
InventorsAnthony H. Heap, Kee Yong Kim
Life of this patent
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Abstract
A powertrain system includes an internal combustion engine, a multi-mode transmission, torque machines, and a driveline. A method for operating the powertrain system to transfer torque among the engine, torque machine, and driveline includes controlling operation of the powertrain system in a pseudo-gear range in response to an output torque request including operating the transmission in a variable mode transmission range and controlling a magnitude of torque output to the driveline in response to an output torque request and in proportion to a magnitude of input torque from the engine.
Claims4
A method for operating a powertrain system including a multi-mode transmission configured to transfer torque among an engine, torque machine, and a driveline, the method comprising:
- controlling operation of the powertrain system in a pseudo-gear range in response to an output torque request including operating the transmission in a variable mode transmission range and controlling a magnitude of torque output to the driveline in response to an output torque request and in proportion to a magnitude of input torque from the engine;
- wherein controlling operation in a pseudo-gear range further comprises determining a preferred engine speed and a preferred clutch slip speed for a torque transfer clutch of the transmission in response to the output torque request.
Dependencies are inferred from the claim text.