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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Since the requirements on the KAFAS camera have further increased in the new
BMW 5 Series, the
KAFAS stereo camera, familiar from the G12, is also used on the G30.
KAFAS stereo camera
The KAFAS stereo camera is calibrated within a distance of approximately 1.25
mi (2 km) during
driving.
The KAFA
DME 8 control unit
The 8th generation engine electronics form a common control unit platform for
gasoline and diesel
engines that have been used since modular engines were introduced. Its
appearance is characterized
by a uniform housing and a uniform connector strip. The hardware inside has been