Patent ID: 11932234
Assignee: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT
Field: Transport (Mechanical engineering)
Classification: CPC B  F  Y | IPC B

Claim 4:
5. The motor vehicle according to claim 1, wherein the electronic control unit comprises:
a functional module for controlling the at least two drive motors and the shift element such that:
the shift element to be opened of the fixed gear ratio to be disengaged is relieved in a torque-controlled manner by the at least two drive motors,
the torque load is calculated and observed for the shift element to be opened,
the torque load is observed with the objective of bringing about a load change by means of a zero crossing in order to establish freedom from load at the shift element,
for establishing the freedom from load for the shift element to be opened, the first drive motor and the second drive motor are controlled in the power-split manner such that they maintain the gear ratio of the previously engaged fixed gear ratio in terms of speeds and put the shift element to be opened in an at least nearly load-free state in terms of torques, and
the load change is brought about at the shift element to be opened by the differential speed, opposite the calculated torque load at the shift element to be opened, being specified at the shift element.