M Double-Clutch Transmission - Overview: Introduction: Notes

BMW has introduced the new generation of sequential transmissions. The M Double-Clutch Transmission with Drivelogic (M DKG) GS7D36SG is available as an option on the entire E9x M3 series and is referred to as M DCT Drivelogic.

The M double-clutch transmission combines the benefits of a sequential M transmission with that of an automatic. Like the SMG, it can be used in automatic mode "Drive" and in manual mode "Sequential".

There are 5 Drivelogic programs in automatic "Drive" mode and 6 Drivelogic programs in "Sequential" mode. In sequential mode shifting can either be done with the new electronic sports shift lever, exclusive to the BMW M3, or with paddle shifters on the steering wheel. The main characteristic of this system is that there is no longer an interruption in driving force during the shifting operation.

Shifting is controlled by the M DCT electronics and executed by the M DCT hydraulic components. These are combined into one mechatronics module and integrated into the transmission. The M DCT has a dedicated system to directly lubricate all of the relevant transmission components. The transmission oil temperature is regulated by a special two stage cooling system.

An electric automatic parking lock has been integrated into the system. Selection of the driving programs and gears are controlled using the (M GWS) electric gear selector switch. Different driving modes and settings can be selected through the controller and the fifth settings menu of the CID (option dependent).