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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Air Breathers are also used on the front fenders of the G30. The Air Breather
is an air outlet behind the
front wheel, which diverts the air flowing into the rear region of the wheel
well in a controlled manner
towards the fender in order to reduce turbulences in the wheel well area. As a
result,
Frontal Light Electronics
Frontal Light Electronics Right and Left
The control units Frontal Light Electronics Right (FLER) and Frontal Light
Electronics Left (FLEL) are
installed in the corresponding headlight.
The Frontal Light Electronics includes:
LED activation in the corresponding headlig