Gasoline Injection And Ignition System With Direct Injection, Function - GF07.70-D-0002TSB
Engine 274 in model 907
ME-SFI [ME] control unit networking
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.
The entire engine management is located in the ME-SFI [ME] control unit (N3/36). The engine management reads in the sensor data directly as well as indirectly via the CAN bus and the corresponding actuators are actuated.
The individual functions and systems of the engine management are coordinated by the ME-SFI [ME] 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
- Diagnosis via the CAN bus
- CAN network
- Control module programming
- Variant coding
- Torque coordination
- Heat management
- Alternator interface
- Maximum vehicle speed limit
- Synchronization
- Load determination
Diagnosis:
For diagnostic purposes, the fault codes of the engine management can be read out and deleted and individual diagnostic functions can be specifically actuated.
CAN network:
The ME-SFI [ME] control unit exchanges data via the connected drive CAN (CAN C) and engine CAN (CAN C1) with other control units that are integrated in the CAN network.
Control unit programming:
The engine management in the ME-SFI [ME] control unit is programmable, i. e. the software of the control unit can be exchanged (replaced). The software required for control unit programming can be found on the diagnosis system software DVD.
Variant coding:
With the variant coding, the following variants - for example - can be activated with XENTRY Diagnostics:
- Vehicle model
- National version
- Transmission version
- Exhaust variants
Engine system
- Starter relay actuation
- Throttle valve control
- Safety fuel shutoff
- Transmission overload protection
- Support for ESP®
- Fully integrated transmission control support
- Driving on torque limitation
- Fan operation
- Throttle valve calibration
- Adustment of the intake camshaft and exhaust camshaft
- Controlling the ECO start/stop function
Fuel injection system
- Cylinder-selective DI
- Fuel high pressure control
- Start, post-start phase and acceleration enrichment
- Warm-up control
- 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
- Fuel pump controlling (fuel low pressure regulation)
- Altitude adaptation (integral pressure sensor in ME-SFI control unit)
- Load change function
- Rpm limitation
Ignition system
- Multi-spark ignition
- Ignition map
- 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-D-1000TSB | |
| Starting, function | GF07.10-D-1001TSB | |
| Ignition OFF, function | GF07.10-D-1002TSB | |
| Fuel supply, function | GF07.10-D-1003TSB | |
| Injection regulation, function | GF07.10-D-1004TSB | |
| Ignition system function | GF07.10-D-1005TSB | |
| Synchronize fuel injection and firing order function | GF07.10-D-1006TSB | |
| Start, post-start phase and warm-up enrichment, function | GF07.10-D-1007TSB | |
| Rpm control, function | GF07.10-D-1008TSB | |
| Alternator interface function | GF07.10-D-1009TSB | |
| Lambda control, function | GF07.10-D-1010TSB | |
| Smooth running control, function | GF07.10-D-1011TSB | |
| Thermal management, function | GF07.10-D-1012TSB | |
| Torque coordination, function | GF07.10-D-1013TSB | |
| Overrun mode fuel shutoff, function | GF07.10-D-1014TSB | |
| Knock control, function | GF07.10-D-1015TSB | |
| Camshaft adjustment, function | GF07.10-D-1016TSB | |
| Engine limp-home mode, function | GF07.10-D-1019TSB | |
| European OBD, function | GF07.10-D-1021TSB | |
| ECO start/stop function engine management, function | With CODE MJ8 (ECO start/stop function) | GF07.10-D-1042TSB |
| Charging, function | GF09.00-D-2000TSB | |
| Exhaust gas cleaning, function | GF49.20-D-3000TSB | |
| Overview of system components for gasoline injection and ignition system with direct injection | GF07.70-D-9998TSB |