Twin-scroll turbocharging

BMW 3 Series / Overview / Twin-scroll turbocharging

The new four-cylinder engines also feature twin-scroll turbocharging. This means that the exhaust stream from cylinders 1 and 4, and the exhaust stream from cylinders 2 and 3, follow separate spiral-shaped paths to the turbine wheel. This reduces exhaust back-pressure at low engine rpm, allowing the energy of the exhaust gas pulses to be utilised as efficiently as possible. The result is instant throttle response and fast-revving performance which BMW drivers can instantly translate into driving pleasure.

    See also:

    2012 BMW 3 Series Sedan: First Look
    Competes with: Mercedes-Benz C-Class, Infiniti G37, Audi A4 Looks like: A little bit bigger outside, just a teensy bit bigger inside Drivetrain: 240-hp, 2.0-liter twin-turbocharged inline-four cylin ...

    Range
    After the reserve range is reached: A Check Control message is displayed briefly. The remaining range is shown on the computer. When a dynamic driving style is used, such as when ...

    The concept
    > The voice activation system can be used to control functions by spoken commands. > Functions that can only used when the vehicle is stopped cannot be operated using the voice activation sys ...