Engine management, basic function

GF05.00-P-9901A

09.09.2020

Engine

all (CAR)

Overview

This document contains information on:

 General

 Function

General

The engine management system includes all processes that are essential in order to achieve economic and ecological engine operation. It includes various subsystems that influence engine running through checking, optimizing or regulating it.

In order to influence engine running, the engine management system records sensor data directly or via bus systems. The engine management system processes these sensor data and controls the required actuators in order to carry out the required function.

Function

Engine management

Engine management comprises the following systems:

Basic system functions

 Control unit diagnosis

 Fault memory

 European On-Board Diagnostics (EOBD)

 Diagnosis over CAN buses

 Flash programming

 Transport mode

 Variant coding

 Drive authorization system

 Torque coordination

 Heat management

 Alternator control function

 Synchronization

 Load determination

 Maximum speed limitation

Engine system

 Starter relay actuation

 Throttle valve control

 Safety fuel shutoff

 Camshaft adjustment and valve lift switchover

 Transmission overload protection

 Support of the Electronic Stability Program (ESP®)

 Fully integrated transmission control support

 Driving on torque limitation

 Anti-jerk control

 Suction fan actuation

 For spark-ignition engines: ignition system

 For diesel engines: glow system

 Controlling the ECO start/stop function

Mixture formation

 Rpm increase with activated A/C

 Rpm limitation

 High-pressure pump control

 Altitude adaptation

 Fuel high pressure control

 Fuel pump controlling

 Load change function

 Smooth running control

 Idle speed control

 Engine limp-home mode

 Overrun mode fuel shutoff

 Start, post-start phase and acceleration enrichment

 Pre, main and post injection

 Warm-up control

 Cylinder-selective direct injection

Air control system

 Exhaust gas recirculation

 Boost pressure control

 Intake air throttling through intake port shutoff

Additional basic functions
Start quantity control, basic function	Engine 139, 176, 177, 254, 256, 260, 264, 279, 282	GF07.08-P-1052A
Starting, basic function	Engine all (CAR)	GF07.10-P-1032A
Ignition system, basic function	Engine 139, 176, 177, 254, 256, 260, 264, 279, 282	GF07.10-P-1035A
Upshift delay, basic function	Engine 139, 176, 177, 254, 256, 260, 264, 279, 282	GF07.10-P-1036A
Ignition ON/OFF, basic function	Engine all (CAR)	GF07.10-P-1039A
Knock control, basic function	Engine 139, 176, 177, 254, 256, 260, 264, 279, 282	GF07.10-P-1044A
Engine limp-home mode, basic function	Engine all (CAR)	GF07.10-P-1047A
Smooth running control, basic function	Engine all (CAR)	GF07.10-P-1048A
Overrun mode fuel shutoff, basic function	Engine all (CAR)	GF07.10-P-1049A
ECO start/stop, basic function	Engine all (CAR)	GF07.10-P-1051A
Lambda control, basic function	Engine 139, 176, 177, 254, 256, 260, 264, 279, 282	GF07.10-P-1054A
European On-Board Diagnostics, basic function	Engine all (CAR)	GF07.10-P-1057A
Torque coordination, basic function	Engine all (CAR)	GF07.10-P-1060A
Fuel injection and ignition system synchronization, basic function	Engine 139, 176, 177, 254, 256, 260, 264, 279, 282	GF07.10-P-9902A
Glow system, basic function	Engine 608, 654, 656	GF15.20-P-1001A
Alternator control, basic function	Engine all (CAR)	GF15.40-P-1058A
Control units
Combustion engine control unit, basic function	Engine all (CAR)	GF07.08-P-9890A
Powertrain control unit, basic function	Engine all (CAR)	GF54.21-P-9894A

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