2012 911 Section 2-2 11/3/11 10:14 AM Page 13
911 Carrera 911 Carrera S
2 DME engine electronics
2.1 General An enhanced engine generation based on the DFI (direct fuel injection) engines familiar from the previous models is used for the 911 Carrera (991) models. By
DME engine electronics
improving efficiency and using the latest engine technology, it has been possible to bring about a further significant reduction in the fuel consumption values for
2 cardiagn.com
the 3.4-liter and 3.8-liter engines compared with the previous models.
2_401_11
The focus in this chapter is on the principle new features of the 911 Carrera (991) compared with the previous model (997).
General
13
Auto Start Stop function
46
Technical data
15
Coasting function
51
DME control unit
17
Thermal energy management
53
DME diagnosis
19
Power supply
22
Fuel system
23
Intake system
27
Mixture formation
32
Ignition system
39
Exhaust system, emission control
40
13
