6 Series 650i (N62TU) Coupe
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Electric fuel pump
> E65, E66
The right-hand B-pillar satellite actuates the electric fuel pump as required.
The following control units are involved in controlling the fuel pump:
•
DME: Detection of the current fuel consumption in the engine on the basis of the required injection quantity
•
SGM (safety and gateway module): Signal transfer
•
SBSR (B-pillar satellite, right): Fuel pump regulation and emergency fuel cutoff
> E60, E61, E63, E64 and E70
The DME control unit monitors the activation of the fuel pump relay. The fuel pump relay is controlled via a
safety circuit only when the engine is running and shortly after terminal 15 ON for pressure build-up (delivery line
for fuel pump).
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8 injectors
During fully sequential fuel injection, each injector is controlled by the DME control unit via its own final stage.
Here, the injection timing for the cylinder concerned is adjusted to the operating conditions (engine speed, load
and engine temperature).
The integrated supply module provides the power supply for the injectors.
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Fuel evaporation control valve
The fuel evaporation control valve regenerates the activated carbon filter using scavenging air. The scavenging
air which is drawn through the activated carbon filter is then enriched with hydrocarbons and fed to the
combustion engine.
In a current-free state, the fuel evaporation control valve is closed. This prevents the ingress of fuel vapour from
the activated carbon filter into the inlet pipe when the engine is switched off.
The integrated supply module supplies voltage to the fuel evaporation control valve.
> E70
The rear power distributor supplies power to the fuel evaporation control valve.
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8 ignition coils with overload-protection relay
The ignition coils are activated by the DME control unit. The ignition coils receive their power supply from the
overload-protection relay in the integrated supply module.
> E70
No integrated supply module; the relief relay is fitted separately.
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Mapped thermostat
The opening and closing of the mapped thermostat is controlled by a characteristic map.
The mapped thermostat ensures that within its control range a constant coolant temperature is maintained at the
engine inlet.
For driving conditions with low loads, the mapped thermostat sets a high coolant temperature (efficient
consumption).
For full loads or higher engine speeds, the coolant temperature is reduced to protect the components.
The integrated supply module supplies voltage to the mapped thermostat.
> E70
The mapped thermostat receives its power supply from the front power distributor in junction box.
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Electric fan
The electric fan is controlled by the DME control unit via a pulse-width-modulated signal (evaluation by electronic
circuitry in the fan).
SBT 8-cylinder spark-ignition engine N62TU E60, E61, E63, E64, E65, E66, E70
BMW AG - TIS
19.01.2013 07:31
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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