Oerlikon Graziano, a brand of Oerlikon Drive Systems Segment, presented a selection of its most recent high technology transmissions and drivelines at the CTI Symposium in Suzhou. Technical highlights included 4SED, the companys 4-speed twin-motor seamless shift electric transmission and the AVTR, the new 2-speed Automated Manual Transmission (AMT) full electric for AWD city cars or pure electric vehicles (EVs). The 4SED uses two traction motors in a compact powertrain which provides four speeds to allow running closer to peak efficiency - approximately 90 per cent. The result is an overall efficiency improvement of up to 15 per cent, which translates into increased range or improved performance for the vehicle. The transmissions unique configuration uses two input shafts, each driven by its own electric motor.
The new 2-speed AMT, developed in a EU-funded research project (FP7), called Adaptable Voltage and Transmission Ratio (AVTR), is a full electric transmission for AWD city cars or pure electric vehicles. The 2-speed AMT offers different solutions for EV market.