Mike's Workshop Manuals: Service manuals for every vehicle
Home >> BMW >> 2011 >> 1M >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description - 1-Series >> Transmission & Driveline System - Functional Description >> Mechatronics >> System functions >> Engine intervention

Engine intervention

During the shifting operation, the EGS control module sends signals that influence the DME (Digital Engine Electronics) or DDE (Digital Diesel Electronics).

The DME sets back the ignition timing angle for a few milliseconds.

The DDE reduces the volume of fuel for a few milliseconds by shortening the fuel injection period.

These measures briefly reduce the engine torque, improve shift quality, reduce the load on the transmission, and shorten the shifting time.