eDrive for plug-in hybrids promises efficiency and power in single package

The eDrive system, which is smaller and lighter than existing electric drivelines, will allow carmakers to buy a single module, rather than having to source and integrate different components together.

The module integrates a water-cooled electric motor and inverter, with a single speed eAxle reduction gearbox.

By integrating the various elements of an electric driveline into a single – smaller - package, the technology can improve the overall system’s efficiency and power density, according to Andreas Mair, all wheel and electric drive senior director of product technology (mechanical) at GKN Driveline.

“Typically if I reduce the packaging then I lower the weight, and for electric and hybrid vehicles in particular, weight is a very important topic,” said Mair. “Since the energy is coming from the batteries, the efficiency of the whole drivetrain is something that we have to look at very carefully.”

The complete module measures 300mm high and 325mm wide, and weighs 54kg, making it around 20mm narrower and 2.5kg lighter than comparable systems.