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:
Dual-mass flywheel with centrifugal pendulum absorber
In all road speed ranges that are relevant in everyday driving, the engineers
have achieved reductions in engine speed which have noticeable benefits for fuel
consumption. For example when cruisin ...
The concept
The Check Control monitors vehicle functions
and alerts you to any malfunctions in the systems
monitored.
A Check Control message consists of indicator
and warning lamps in the instrument clust ...
Around the center console: controls and displays
1. Coupe: microphone for voice activation systemand for telephonein
hands-free mode
Convertible: microphone on steering column
2. SOS: initiating an Emergency Request call
3. ...