Electrical systems: Drive
The R56 is equipped with the following engines and transmissions:
- Spark-ignition engines N12 and N14
These engines have been jointly developed by the BMW Group and the PSA Group.
The N12 engine is a 4-cylinder naturally aspirated engine with Valvetronic.
The N14 is a 4-cylinder turbocharged engine with direct injection and exhaust gas turbocharger.
On the spark-ignition engines, the Junction Box electronics (JBE) actuate the electric fuel pump.
NOTE: Detailed function descriptions of the N14 can be called up on the BMW diagnosis system at the relevant function interface. - W16 diesel engine
The 4-cylinder diesel engine is also a joint development between the BMW Group and the PSA Group. This engine will be introduced at a later date.
The W16 is equipped with a diesel particulate filter. The diesel particulate filter requires a fuel additive for regeneration. This means that it also has a separate tank and an additional additive pump.
- Manual transmission
The R56 is equipped as standard with a 6-speed manual transmission manufactured by GETRAG (GS6-53BG or GS6-55BG). The manual transmission has been given an additional 6th gear. The friction surfaces on the synchronization rings for the individual gears are coated with carbon. Compared to the predecessor transmission, the oblique-toothed and synchronized reverse gear is a new feature.
The COOPER S is equipped with a locking differential.
- Automatic transmission
The 6-speed automatic transmission is manufactured by AISIN LTD (GA6F21WA). The R56 will be available with an automatic transmission 3 months after start of series production.
The 6-speed automatic transmission has been adapted to the new electrical system. The new engines meant that geometrical modification were needed in the engine compartment and on the transmission.
Further new features:
- Electronic interlock
- Discontinuation of reverse light switch (signal from EGS)
- M/S shift gate (as BMW)
- SPORT button (for shorter shift times)