6 Series M6 (S85) Coupe
-
Electric vacuum pump and low-pressure sensor
The electric vacuum pump generates low air pressure for the brake power assistance.
The electric vacuum pump replaces the suction jet pump used previously.
The electric vacuum pump is a vane-cell pump.
The low air pressure generated is measured by a low air pressure sensor.
-
Radiator with coolant thermostat
Coolant flows in a crosswise direction through the cylinder head as well as the engine block according to the
familiar method.
New: The S85B50 radiator has two parts.
Each cylinder head therefore has its own radiator feed.
This arrangement reduces the pressure drop in the radiator from approximately 3 bar to approximately 1.4 bar.
Due to the two-part cooling concept, the coolant thermostat is positioned in the return flow.
[more ...]
-
2 exhaust gas temperature sensors
The S85B50 has 2 exhaust lines made of stainless steel.
An exhaust-gas temperature sensor on each cylinder bank measures the exhaust-gas temperature. The DME
requires this signal for protection of the catalytic converter.
Note: From 03/2006, the signals from the exhaust gas temperature sensors are not used.
From 03/2006, the signals from the exhaust gas temperature sensors in DME are not used. However, the
exhaust gas temperature sensors were still fitted until 09/2006.
The signals were replaced by calculated exhaust gas temperatures. The exhaust gas temperatures are also
no longed diagnosed in the DME.
-
POWER button
The POWER button is mounted in the selector lever cover and is used to select the engine power output: P500
= 500 HP, P400 = 400 HP.
[more ...]
-
2 ionic current control units
Each cylinder bank has one ionic current control unit.
The ionic current control unit is positioned between the DME control module and the ignition coils. The igniter
output stages are in the ionic current control unit. The ionic current control unit records and amplifies the signals
from the spark plugs. This operation is known as ionic current measurement. The signal is transmitted to the
DME via a separate line for each cylinder bank.
[more ...]
-
DME: Digital engine electronics
The newly developed MSS65 engine control is responsible for this engine's outstanding output and low exhaust
emission.
The engine control has more than 1000 individual components. The DME control module coordinates all engine
operations. Also included are interfaces for other control modules, e.g. sequential manual gearbox.
The DME control module is extremely efficient. The 3 microprocessors can perform 200 million computer
operations per second.
The DME control module calculates the following for each individual cylinder from more than 50 input signals:
•
Firing point
•
Charge
SBT S85B50 engine E60, E61 M5 E63, E64 M6
BMW AG - TIS
19.01.2013 22:54
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 4 -
