CPC B60W 20/30 (2013.01) [B60K 6/485 (2013.01); B60K 6/547 (2013.01); B60W 10/06 (2013.01); B60W 10/08 (2013.01); B60W 10/11 (2013.01); B60W 20/15 (2016.01); B60W 30/19 (2013.01); B60W 2510/1005 (2013.01); B60W 2710/0666 (2013.01); B60W 2710/083 (2013.01); B60W 2710/105 (2013.01); B60W 2710/1005 (2013.01)] | 12 Claims |
1. A control module for a vehicle powertrain, the powertrain comprising a transmission, an engine and an electric machine, the engine and the electric machine together delivering a transmission input torque when both the engine and the electric machine are operational, the transmission, the engine and the electric machine together delivering a transmission output torque when both the engine and the electric machine are operational, the transmission being configured to cause a gear upshift from a first gear to a second gear in response to an increase of engine speed, wherein the gear ratio of the second gear is lower than the gear ratio of the first gear, wherein the gear upshift comprises a torque phase and an inertia phase following the torque phase, the control module comprising:
an input configured to receive an input signal indicative of a requested gear upshift from the first gear to the second gear; and
a processor configured to:
(i) determine an engine torque increase from a first engine torque output when the transmission is in the first gear to a second engine torque output when the transmission is in the second gear; and
(ii) generate a control output to apply the engine torque increase and control a negative torque output of the electric machine during the torque phase, such that the transmission output torque is maintained substantially constant throughout the torque phase;
wherein the transmission output torque is substantially the same when: the transmission input torque comprises the first engine torque output and the transmission is in the first gear, and the transmission input torque comprises the second engine torque output and the transmission is in the second gear.
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