2.7 Additional DME functions

The DME control unit controls the following systems.

VarioCam

The DME control unit controls the variable valve control system for the intake and exhaust camshafts by way of VarioCam with continuous angle adjustment via vane adjusters. This also ensures high torque and power figures for the new 911 GT3 while at the same time taking into account exhaust emission laws that apply worldwide.

The adjustment range is:

0 to 50° crank angle on the intake side and 0 to 30° crank angle on the outlet side.

VarioCam 02_25_14 DME Engine electronics 2

DME Engine electronics 2

Like the current 911 Carrera models (991), the 911 GT3 (991) has an electronic demand-controlled oil pump. The delivery rate of the oil pump is pressure- and volume-controlled over the entire engine map.

It is controlled by the DME control unit, depending on the temperature, engine load and engine speed.

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Electric radiator fans

Like the 911 Carrera models (991), the 911 GT3 has two continuously controlled electric radiator fans.

Engine compartment purge fan

The arrangement, function and control of the two electric, two-stage engine compartment purge fans is also comparable with the 911 Carrera models (991).

PDK disc valve

Depending on the temperature, the DME control unit activates and deactivates a common disc valve on the PDK, which is responsible for cooling the oil in the gear wheel set and the ATF oil.