Development of e-AWD Parallel Hybrid System for SUVs

Authors

Dipl.-Ing. K. Kamichi, Dipl.-Ing. T. Miyamoto, Dipl.-Ing. M. Ishimoto, Dipl.-Ing. N. Tsukamoto, Dipl.-Ing. N. Takebayashi, Dipl.-Ing. N. Ogawa, Toyota Motor Corporation, Aichi:

Year

2023

Print Info

Production/Publication ÖVK

Summary

This paper describes the development of a new e-AWD hybrid system developed for SUVs. This hybrid system consists of a high-torque 2.4-liter turbocharged engine and a front unit that contains a 6-speed automatic transmission, an electric motor, and an inverter. It also includes a rear eAxle unit that contains a water-cooled high-power motor, an inverter, and a reduction gear, as well as a bipolar nickel-metal hydride battery. By combining a turbo engine that can output high torque across a wide range of engine revs with two electric motors (front and rear), this system achieves both smooth acceleration with a torquey driving feeling and rapid response when the accelerator pedal is pressed. In addition, new AWD control using the water-cooled rear motor realized more stable cornering performance than our conventional e-AWD system. By developing a hybrid system with appealing new driving characteristics, it was possible to increase the variety of electric powertrains available to customers as part of measures to help achieve carbon neutrality.

ISBN

978-3-9504969-2-5