| 摘要 |
A method for operating a parallel hybrid powertrain ( 1 ) of a motor vehicle with multiple drive units ( 2, 3 ) and with a single output side ( 5 ) is described. At least one internal combustion engine ( 2 ) and one electric motor ( 3 ) are provided and the at least one electric motor ( 3 ) is arranged in the powertrain between the output ( 5 ) and the at least one internal combustion engine ( 2 ). A first friction-locking shifting element ( 7 ) is provided between the internal combustion engine ( 2 ) and the electric motor ( 3 ), while a coupling element ( 8 A) with rotational speed dependent recognition and at least one second friction-locking shifting element ( 30 ) are arranged between the electric motor ( 3 ) and the output side ( 5 ). A target output torque to be applied at the output ( 5 ) is a function of the power transmission capacity of the second shifting element ( 30 ). The power transmission capacity of the second shifting element ( 30 ) is controlled as a function of the required target output torque (m_fahr_soll) so that the second shifting element ( 30 ) has the power transmission capacity required for achieving the target output torque (m_fahr_soll) at the output ( 5 ). A target slip specification (s<SUB>-</SUB> 30 _soll) of the second shifting element ( 30 ) is controlled at least as a function of the target-drive torque by means of the target drive torque (m<SUB>-</SUB> 2 _soll, m<SUB>-</SUB> 3 _soll) to be produced and are converted with a closed loop control as a function of a further operating state parameter of the parallel hybrid powertrain by the drive units ( 2, 3 ).
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