| CPC B60W 20/40 (2013.01) [B60W 10/06 (2013.01); B60W 10/08 (2013.01); F02D 41/0087 (2013.01); F02N 11/04 (2013.01)] | 8 Claims |
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1. A method for operating a motor vehicle powertrain comprising at least one electric machine and an internal combustion engine, wherein
the internal combustion engine comprises at least one first cylinder that generates a first torque and at least one second cylinder that generates a second torque;
the method comprises the steps of:
during a first operating phase, the first cylinder and the second cylinder are activated simultaneously, and therefore the motor vehicle is driven by way of the first cylinder that generates the first torque and by way of the second cylinder that generates the second torque during the first operating phase;
during a transition phase, which follows the first operating phase, at least the first cylinder is shut down, while at least the second cylinder remains activated; and
during a second operating phase, which follows the transition phase, the first cylinder is shut down and the second cylinder is simultaneously activated, and therefore the motor vehicle is driven at least by way of the second cylinder during the second operating phase;
wherein
during the transition phase, the first torque configured to drive the motor vehicle which is lost by shutting down the first cylinder is provided by the electric machine via a motor mode of the electric machine, and the motor vehicle is thereby driven by way of the torque provided by the electric machine until the first torque which is lost by shutting down the first cylinder is provided by way of the activated second cylinder, whereupon the motor mode of the electric machine is terminated in the transition phase, and
during the second operating phase the second cylinder provides the second torque having a same value as in the first operating phase and the lost first torque having a same value as the first torque in the first operating phase.
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