Method and apparatus for starting an engine of a modular hybrid transmission based upon demanded torque

摘要

A control system including a method and apparatus for operating a hybrid vehicle. A disconnect clutch selectively separates an electric machine from a combustion engine. If a wide open throttle or high torque command is requested and the combustion engine is shut down, a 12 volt starter may be used to start the combustion engine while disconnected from the electric machine and all of the electric machine torque available may be used for traction.

主权项

1. A vehicle comprising:
an engine having a starter; a stepped gear ratio automatic transmission operatively connected to the engine by a clutch; a motor operatively connected to the transmission; and a controller that provides an engine start signal when the engine is stopped to:
the starter when a torque demand request signal exceeds a threshold, and to the motor when the clutch is applied and the torque demand request signal does not exceed the threshold.