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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Control units in the vehicle must be supplied with power only when they are
needed. The following
terminals are used in the G30:
Terminal 15N
Terminal 30B
Terminal 30F
Terminal 30
Terminal 15N supplies control units which are needed only when driving and
which may be needed to
safely end a j
The Fatigue and Focus Alert helps to avoid accidents caused by tiredness on
long, monotonous
journeys. It is part of the Active Protection equipment (OE 5AL) included in the
basic equipment.
A change in the driver's driving behavior is perceived by the Fatigue and Focus
Alert. In the event
of in