Impact of Improved Cost Function-Based Torque Split Algorithm on Different Drive Train Topologies

Abstract

The combined gear shifting and torque split control we introduced at EVS21 has been improved and adopted to different drive train topologies. The paper demonstrates the improvements concerning fuel efficiency. It shows an new method to calculate the basic cost of the electrical energy stored in the battery. For this gliding average calculations of the efficiencies of the combustion engine and the electrical drive train components are introduced. Further the interaction of the -now improved-cost function base algorithm with different hybrid topologies is shown. The fuel consumption, the accumulated current of the battery and the number of gear shifts of the different topologies are compared among each other. Conclusions about topologies and engine combinations are made