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Transmission overload protection, function - GF07.61-P-4026SM

ENGINE 113.986 

ENGINE 113.987 

ENGINE 113.988 

ENGINE 113.989 

Fig 1: Transmission Overload Protection, Function (Engine 113)
G04738465

The transmission overload protection function protects the shift elements of the automatic transmission (722.6) from excessive thermal stresses during load changes in the upper engine speed range.

Engine torque is reduced by briefly retarding the ignition and closing the throttle valve, reducing charge pressure during gearshifts.

The ME-SFI control unit (N3/10) is supplied with a signal via the CAN databus by the ETC control unit (N15/3) for this purpose.

The ME control unit controls in line with the performance map, if altering the ignition angle is sufficient or if the throttle valve must be retarded.

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