5 Series E60 530d (M57TU) SAL
Power is supplied to the gearshift paddles from the steering column switch cluster (SZL).
-
SPORT button for Dynamic Driving Control
Dynamic Driving Control (FDC) is activated with the SPORT button: Gearshift times are shortened and the shift
characteristics are made more sporty. The engine responds more spontaneously to movements of the
accelerator pedal. The steering and holding forces of the steering tuned for a sportier feel - for Servotronic or
active front steering (AFS). The AFS includes Servotronic.
[more ...]
-
Hydraulic unit with sensors
Clutch actions and gear changes are automatically executed by the hydraulic unit and the sensors.
[more ...]
•
Gearshift and selector angle actuator
The gearshift and selector angle actuator shifts the selector shaft along its longitudinal axis and turns the
selector shaft to change shift gate.
[more ...]
•
Shift travel sensor and selector angle sensor
The gear engaged is recognised from the shift travel sensor and the selector angle sensor:
The shift travel sensor detects the forwards and backwards movements of the selector shaft in the
respective shift gate.
The selector angle sensor detects how far the selector shaft turns, and so recognises a change of shift
gate.
[more ...]
•
Pressure accumulator
The pressure accumulator is fitted on the bottom left of the transmission and makes sure that there is
always sufficient oil pressure for a gearshift to be executed.
A freely moving piston subdivides the pressure accumulator into 2 chambers. One chamber is charged
with nitrogen at approx. 27 bar and -25
°
C (lifelong charge). The other chamber takes up oil from the
hydraulic pump. Here, the oil exerts pressure on one side of the piston, compressing the nitrogen. The
compressed oxygen maintains the oil pressure during shifting.
•
Hydraulic pressure sensor
The hydraulic pressure sensor is installed directly on the hydraulic unit valve block and reports the current
oil pressure to the SMG control unit. The hydraulic pump is switched on and off as required.
•
Clutch actuator with clutch travel sensor
The clutch actuator executes the clutch operations. The clutch travel sensor registers the clutch release
travel.
[more ...]
•
Hydraulic pump with electric motor
The hydraulic pump with electric motor builds up to 55 bar system pressure for the gearshifts. The
hydraulic pump is actuated by the SMG control unit.
•
Inductive sensor for transmission input speed
The inductive sensor measures the transmission input speed. The SMG control unit compares this speed
with the engine speed and computes the closing speed of the clutch (i.e. how fast the clutch can establish
the optimal power flow between the engine and the transmission).
•
Expansion tank
The expansion tank makes sure that there is always sufficient hydraulic fluid available in the system. There
is a maximum and a minimum mark on the expansion tank for adjusting the oil level.
SBT Sequential manual gearbox E60, E61, E63, E64
BMW AG - TIS
22.02.2013 10:11
Issue status (12/2007) Valid only until next DVD is issued
Copyright
Page - 3 -
