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Energy management, function - GF54.10-P-0003FQ

MODEL 218 

Fig 1: Energy Management - Block Diagram
G10083120Courtesy of MERCEDES-BENZ USA

Function requirements, general 

Energy management, general 

Energy management manages the provision (supply) and consumption (management) of electrical energy with the aim of ensuring the startability of the engine and a stable supply to all electrical consumers.

The following components are involved in energy management:

Transport mode (model 218.3 as of 01.06.2012, model 218.9): 

The transport mode is activated in the production plant at the end of the production process, and it sets the overall vehicle into a defined special condition.

With targeted interventions in individual electronics systems the following is achieved:

The transport mode remains active on its way from the production plant to the dealers and company-owned sales and service outlets around the world up to the so-called delivery inspection and the final handover to the end customers.

IMPORTANT The transport mode is automatically deactivated from a total distance traveled of more than 350 km whereupon it cannot be activated again. Up to this limit, the transport mode can be deactivated using the diagnosis tester or key combinations at any give time and activated with the diagnosis tester again.

The fault memory is not actively deleted when the key combination is used for deactivation. This means that the "Transport mode active" entry remains stored. This must be deleted using the diagnosis tester when the vehicle is inspected for the first time.

To support the processes in Sales and Logistics the vehicle's currently possible residual service life and, if necessary, appropriate care instructions for the on-board electrical system battery are shown on the multifunction display of the instrument cluster when the transport mode is active.

The energy management system's continuously determined condition of the on-board electrical system battery is rendered fully transparent at any given time without the use of any additional measuring instruments during the vehicle delivery period. This display provides the operating personnel with specific instructions on what to do to guarantee a high delivery quality with regard to the on-board electrical system battery.

The individual transport mode functionalities are split up for numerous individual systems. The core here is the central control of the transport mode by the energy management system. According to the energy management specifications, targeted interventions (function restrictions or changes) are carried out in individual electronics systems.

The following function limits or modifications are implemented during the transport mode:

The following tasks are carried out by the energy management system:

Major assembly coordinator: 

The major assembly coordinator is integrated into the CDI control unit or the ME-SFI control unit and forms the interface between the energy management system and the alternator. The CDI control unit or the ME-SFI [ME] control unit communicates with the alternator over the drivetrain LIN. The major assembly coordinator regulates the alternator's power output to match the energy management system specifications, taking engine load into consideration.

The recording and evaluation of the relevant variables for this are conducted by the following components:

Energy management contains the following subfunctions :

Engine on energy management, function   GF54.10-P-1060FQ 
Engine off energy management, function   GF54.10-P-1050FQ 
ECO start/stop function energy management, function MODEL 218
with CODE B03 (ECO start/stop function)		 GF54.10-P-1040FQ 
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