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Presentation
20
EMS (Engine Management
System)
To control the engine and the exhaust aftertreatment
system two control units are used. The EMS is used
primarily for the diesel engine control and the ACM for
the aftertreatment control. The control units are
connected to all actuators and sensors and
communicate internally on CAN.
The OEM control system communicates with the
engine and exhaust aftertreatment control system on
a CAN-link according to SAE J1939 standard with
some additional Volvo Penta proprietary CAN
messages.
System diagnostics
The control system includes diagnostic functionality to
detect and locate any malfunctions in the control
system, as well as to protect components from
damage.
If a malfunction is detected, related fault codes will be
transmitted on CAN to the OEM control system or
Volvo Penta Controller Interface Module (CIM) if used.
If there is a serious malfunction, the engine
performance may be reduced or the engine is shut
down completely (depending on the type of fault and
application).
Two step inducement for VE: If the detected fault is
emission related, there will be a two step Inducement
(reduced performance) according to the StageV
legislation. For genset the engine will be shut down
after a certain time according to inducement settings.
Fault codes can also be read by the Volvo Penta
aftermarket tool VODIA for fault tracing.
47713625 06-2021 © AB VOLVO PENTA
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