Patent ID: 7744502

Claim:
A method of driving a parallel hybrid drive train ( 1 ) of a motor vehicle ( 19 ) having, as drive units ( 2 , 3 ), at least one internal combustion engine ( 2 ), at least one electric motor ( 3 ), and an output ( 5 ), and a friction locking shifting element ( 7 ), along the drive train ( 1 ), the electric motor ( 3 ) is located between the internal combustion engine ( 2 ) and the output ( 5 ), the friction locking shifting element ( 7 ) is located between the internal combustion engine ( 2 ) and the electric motor ( 3 ), and a hydrodynamic torque converter ( 8 A) is located between the electric motor ( 3 ) and the output ( 5 ), the method comprising the steps of: determining a target drive torque (m_ 2 , m_ 3 ) depending on one of a target output torque (m_drive_target), an actual turbine torque (n_t_actual) of the hydrodynamic torque converter ( 8 A), and an equivalent speed value (n_ab) of the parallel hybrid drive train ( 1 ) and an actual speed (n_ 3 _actual) of the electric motor ( 3 ) via inverse converter recognition of the hydrodynamic torque converter ( 8 A); and applying the target output torque (m_drive_target), which is subject to slip of the hydrodynamic torque converter ( 8 A), to the output ( 5 ).