Germany, Audi is now moving onto the next stage of its electrified vehicle research with the announcement today of a new trial using an updated version of the A1 e-tron. The latest version does away with the previous rotary engine range-extender and adopts a more conventional three-cylinder engine.
For the new car, which Audi calls a Dual-Mode Hybrid, the layout of the drive system essentially comprises a combustion engine, two electric motors and a single-speed transmission.The combustion engine is a specially developed three-cylinder engine displacing 1.5 liters and developing a healthy 130 horsepower thanks to turbocharging and direct injection technology. It is connected directly to a 68-horsepower electric motor that functions as a starter and alternator-generator. Importantly, this electric motor doesn’t actually drive the wheels.
The second electric motor, which is rated at 116 horsepower, is used for driving the wheels, either exclusively or together with the gas engine. A special single-speed transmission enables the combustion engine, including the alternator-generator, to be engaged or disengaged as required from the rest of the drivetrain by means of a claw clutch.