Engine management control module
(MCM)
The engine management control module
(MCM) is located on the side of the engine. It
acts as an interface between the electric and
electronic components on the engine/equip-
ment and the drive control system unit (CPC)
on the vehicle.
The engine management control module
(MCM) has many functions:
R
Injection control of the Common Rail diesel
injection system
The engine management control module
(MCM) calculates the optimum start and
quantity of injection, taking the torque
demand from the drive control system unit
(CPC) into account.
All of the data required for this, e.g. power
output or data which serve to protect the
engine, are stored in the engine manage-
ment control module (MCM).
R
Regulation of exhaust gas recirculation
(EGR)
The ratio between the mass of recirculated
exhaust gas and the fresh air mass is pre-
cisely regulated over the entire engine
speed range.
R
Charge-air pressure control
R
Control of the engine brake
The engine management control module
(MCM) controls the engine brake as
required by the drive control system unit
(CPC).
R
Fan regulation
In optional fan regulation, the solenoid
valve on the fan clutch is activated accord-
ing to coolant temperature.
R
Instrument cluster display
The engine management control module
(MCM) detects the oil level, engine oil tem-
perature, oil pressure, coolant temperature
and the engine speed for the displays in the
instrument cluster.
Drive control system unit (CPC)
The drive control system unit (CPC) is instal-
led in a protected location in the vehicle/
equipment by the vehicle/equipment manu-
facturer. It acts as an interface between the
electric and electronic components on the
vehicle/equipment and the engine manage-
ment control module (MCM) on the engine.
The drive control system unit (CPC) has many
functions:
R
Calculation of torque demand
The drive control system unit (CPC) regis-
ters the driver's requirements. For exam-
ple, the position of the accelerator is detec-
ted by the drive control system unit (CPC).
A torque requirement is calculated from
that and sent to the engine management
control module (MCM) via the CAN con-
nection.
In doing so, information and limitations
from optionally connected control units
such as the gearbox control, retarder con-
trol, ABS and ASR are taken into account.
R
Output of displays and indicator signals
which are displayed in the instrument clus-
ter.
R
Monitoring of coolant level, charge current
and air filter, for example
R
Legal speed limitation
R
Evaluation of start request
The engine starting process is initiated
once a corresponding start request is pres-
ent (ignition lock or external engine start/
engine stop button).
Exhaust gas aftertreatment control
unit (ACM)
The exhaust gas aftertreatment control unit
(ACM) is installed in a protected location in
the vehicle/equipment by the vehicle/equip-
ment manufacturer. It regulates and controls
the exhaust gas aftertreatment system.
Electronic engine management
19
At a glance
(193 Seiten)
(124 Seiten)
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern