Gasoline Injection And Ignition System With Direct Injection, Function - GF07.70-S-0002TRJ
Engine 274 in model 447.6/7
with code XM0 (Facelift)
Sensors, actuators at ME-SFI [ME] control unit (N3/34)
CAN network shown with code GE1 (6-speed manual transmission TSG 380) or with code G42 (7G-TRONIC PLUS)
CAN network shown with code G43 (9G-TRONIC)
Gasoline injection and ignition system with DI, general
The gasoline injection and ignition system with direct injection in electrical combination with the sensors and actuators of engine 274 forms the engine management system.
Here the individual functions and systems of the engine management are controlled and coordinated by the ME-SFI control unit.
The engine management is subdivided into the following systems:
- Basic functions
- Engine system
- Fuel injection system
- Ignition system
- Exhaust regulation
Basic functions
- Control unit diagnosis
- Fault memory
- European On-Board Diagnosis (EOBD)
- Diagnosis
- Flash programming
- Variant coding
- Torque coordination
- Heat management
- Alternator interface
- Synchronization
- Load determination
With the variant coding, the following variants can for example be activated with XENTRY Diagnosis:
- National version
- Transmission version
- Exhaust variants
CAN network
The ME-SFI [ME] control unit exchanges data with the other control units integrated in the CAN network via the connected drive CAN, engine CAN, interior CAN and suspension CAN.
Engine system
- Starter relay actuation
- Throttle valve control
- Safety fuel shutoff
- Transmission overload protection
- Driving on torque limitation
- Fan operation
- Throttle valve calibration
- Adjustment of the intake camshaft and exhaust camshaft
- Controlling the ECO start/stop function
Fuel injection system
- Start, post-start phase and acceleration enrichment
- Warm-up control
- Cylinder-selective DI
- Fuel high pressure control
- Fuel pump controlling (fuel low pressure regulation)
- Idle speed control
- Limp-home function
- Rpm increase for an activated air conditioning system (with CODE HH4 (THERMOTRONIC automatic air conditioning) or with CODE HH9 (Semi-automatically controlled air conditioning system, TEMPMATIC))
- Inertia fuel shutoff
- Altitude adaptation (integral pressure sensor in ME-SFI control unit)
Ignition system
- single and multi-spark ignition
- Rpm limitation
- Knock sensor system
- Synchronization of camshaft and crankshaft position
Exhaust regulation
- Catalytic converter heating
- Oxygen sensor heater controlling
- Straight-line lambda control
The operating conditions of the engine and the associated active partial functions of the engine management are described in the following documents:
| Ignition ON, function | GF07.10-S-1000TRJ | ||
| Starting, function | GF07.10-S-1001TRJ | ||
| Ignition OFF, function | GF07.10-S-1002TRJ | ||
| Fuel supply, function | GF07.10-S-1003TRJ | ||
| Injection regulation, function | GF07.10-S-1004TRJ | ||
| Ignition system function | GF07.10-S-1005TRJ | ||
| Synchronize fuel injection and firing order function | GF07.10-S-1006TRJ | ||
| Crankcase ventilation system, function | GF01.20-S-0001TRJ | ||
| Camshaft adjustment, function | GF05.20-S-0003TRJ | ||
| Start, post-start phase and warm-up enrichment, function | GF07.10-S-1007TRJ | ||
| Rpm control, function | GF07.10-S-1008TRJ | ||
| Alternator interface function | GF07.10-S-1009TRJ | ||
| Lambda control, function | GF07.10-S-1010TRJ | ||
| Smooth running control, function | GF07.10-S-1011TRJ | ||
| Thermal management, function | GF07.10-S-1012TRJ | ||
| Torque coordination, function | GF07.10-S-1013TRJ | ||
| Overrun mode fuel shutoff, function | GF07.10-S-1014TRJ | ||
| Knock control, function | GF07.10-S-1015TRJ | ||
| Engine limp-home mode, function | GF07.10-S-1019TRJ | ||
| European OBD, function | GF07.10-S-1021TRJ | ||
| ECO start/stop function engine management, function | With CODE MJ8 (ECO start/stop function) | GF07.10-S-1042TRJ | |
| Charging, function | GF09.00-S-2000TRJ | ||
| Exhaust gas cleaning, function | GF49.20-S-3000TRJ | ||
| Overview of system components for gasoline injection and ignition system with direct injection | GF07.70-S-9998TRJ |