Gear and drive solutions provider Oerlikon Graziano, together with Vocis, will show its latest hybrid and electric technologies at the forthcoming CTI Symposium 2018 in Berlin.
Heading the product line-up will be H-RAM, the company’s innovative hybrid rear axle module, which will be the subject of a detailed technical presentation.
H-RAM is a compact and highly integrated design that can be configured as a P3 motor arrangement or a stand-alone P4 electric axle. It combines the propshaft input from a conventional powertrain with an electric motor connected through a two-speed planetary drive and incorporates the final drive and differential which may be open, or featuring a mechanical or electronically controlled LSD. In the P3 arrangement, tests by Oerlikon Graziano have shown efficiency gains of up to 8% compared to a P2 architecture, when running the WLTP cycle in EV mode.
The compact size of H-RAM enables OEMs to package a complete hybrid system within the sub frame of the rear axle without modification of the standard ICE powertrain, a considerable advantage for vehicle platforms that are shared between hybrid and non-hybrid models. The P3 configuration with planetary gearing enables efficient running in pure EV mode and the capability of very strong e-Boost at low speeds in a high gear, enhancing the performance feel of the vehicle.
The first application of the unit is in a high-performance vehicle with peak wheel torque of 12,000Nm in hybrid mode and a potential maximum speed in E-mode of over 300 Km/h.
In addition to H-RAM and OGeco, Oerlikon Drive Systems will display its EMR3 single-speed transmission for battery electric vehicles, its 4SED 4-Speed, twin-motor, electric drive and modular transmissions for 48V and high voltage hybrid applications.