BMW 5 Series: Crankcase
Honing process

Honing process "old/new"
- Previous manufacturing process of internal cylindrical honing
- New manufacturing process of form honing
The cylindrical bore hole of a combustion engine becomes deformed during the
operating condition
by thermal loads. Form honing allows this deformation to be achieved in
production, so that there is an
almost cylindrical shape in the operating condition. This has a positive effect
on the emissions quality,
oil and fuel consumption, as well as output and wear.
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Features:
Chain drive at the side of the engine emitting the forces
Single-part chain drive for driving the camshafts
Single sleeve-type chain 8 mm
Electric motor of the combined oil-vacuum
Comparison between chain track of B58 engine and B58TU engine
Chain track, two-part timing chain drive B58 engine
Chain track, single-part timing chain drive B58TU engine
6-cylinder engine
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If the current course of the vehicle deviates too much from the target
trajectory (path curve), a steering
correction is initiated.
The steering intervention is a corrective measure. This means the driver is not
relieved of his duty to
steer the vehicle. As the corrective steering interventions a
General information
The behavior of the vehicle during locking with
the vehicle key depends on the following settings:
If the locking of the vehicle is confirmed with
a light signal or a sound signal.
If the exterior mirrors are automatically folded
in and out when the vehicle is locked and unl