Patent ID: 8079349

Claim:
A drive train for a motor vehicle having an internal combustion engine that is supercharged by a supercharger, the combustion engine being operative for supplying a predefinable torque to the drive train, the internal combustion engine having an inlet side connected to the supercharger via an air mass flow line, the air mass flow line having a branch for selectively blowing secondary air from the supercharger into a secondary air line and to an outlet side of the internal combustion engine upstream of a catalytic converter, the air mass flow line being provided without a throttle valve, the drive train comprising: at least one electric machine that can be operated as a generator; and a control unit for sensing when the supercharger is blowing secondary air to the outlet side of the internal combustion engine and generating a signal to cause the electric machine to be operated as a generator to compensate for excess torque of the internal combustion engine resulting from a charge pressure generated by blowing the secondary air to the outlet side of the internal combustion engine.