Transmission specialist Oerlikon Graziano, an Oerlikon Business Unit and part of Oerlikon’s Drive System Segment, will present its family of hybrid and electric transmission systems at VDI Wissenforum. Among the systems to be shown are:
A four-speed seamless-shift transaxle. The new eDCT multi-speed transmission provides EVs with greater range while reducing vehicle weight and battery pack size. This innovative transaxle uses the principles of dual clutch transmissions (DCTs) to provide seamless shifting and up to 15% improvement in vehicle efficiency. (Earlier post.)
A hybrid transmission with torque infill, the OG-Eco. The technology combines the seamless shifting benefits of a Dual Clutch Transmission (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. The technology combines two benefits: engine working in a more efficient condition and smoother gearshift compared to a traditional AMT. It also allows vehicle manufacturers to further benefit from their investment in hybrid technologies, by optimizing the efficiency and overall system weight.
For passenger cars and light commercial vehicles the company will exhibit a dual-speed seamless-shifting transaxle that can be coupled with a transversal electric motor, for front or rear full electric axle. The transaxle has been developed together with VOCIS Driveline Controls, contributing with its control software and electronic hardware design skills to the transmission design.
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. Another crucial element for us is the innovation level of transmissions conceived for the ultimate electric and hybrid vehicles: 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.—Paolo Mantelli, Head of Performance Automotive Oerlikon Graziano