Torino, Italy-based transmission specialist Oerlikon Graziano is presenting its family of hybrid and electric transmission systems at this week’s VDI Wissenforum show in Friedrichshafen, Germany.

Oerlikon Graziano has been building electric and hybrid driveline assemblies for 20 years. Its products are used in vehicles ranging from golf carts to city cars to light commercial EVs to electric and hybrid sports cars.

The products displayed at VDI include:

• A four-speed seamless-shift transaxle that uses the principles of dual clutch transmissions (DCTs) to provide seamless shifting and up to a 15% improvement in vehicle efficiency.
• A dual-speed seamless-shifting transaxle that can be coupled with a transversal electric motor, for front or rear full electric axles. This transaxle has been developed together with VOCIS Driveline Controls, which contributed its control software and electronic hardware design skills to the transmission design.
• The OG-Eco, a hybrid transmission with torque infill, which combines the seamless shifting benefits of a DCT with the packaging and weight advantages of an AMT. The gearbox can be combined with a hybrid system that is fully integrated into the transmission package. The electric motor is linked to the main transmission through a two-speed gear set, providing torque to the drivetrain in between gear selection, enabling constant torque delivery.

“Electric drive is a field where integrated system-level optimization is the only way to offer significantly improved customer benefits, and our efforts are aimed at increasing as much as possible the integration level of motor and transmission within the powertrain,” said Oerlikon Graziano spokesman Paolo Mantelli. “Our multi-speed concepts are the most suitable for a modern full electric or even hybrid vehicle, allowing the best sizing of the electric motor and usage of batteries’ power.” 

Image: Oerlikon Graziano
Source: Oerlikon Graziano via Green Car Congress