BMW 3: Connecting rod - Crankshaft drive
BMW 3 Series G20 (2018-2025) Training manual / B46TU-B48TU Engines / Engine Mechanical / Connecting rod - Crankshaft drive
Connecting rod
- Piston
- Area transferring the force
- Wrist pin
- Connecting rod bearing with shaped bore hole
- Connecting rod
- Connecting rod bearing (B46TU only)
- Small connecting rod eye (trapezoidal shape)
- Large connecting rod eye (cracked)
- Connecting rod bolts of the connecting rod bearing cap
- Connecting rod bearing shell of the connecting rod bearing cap
- Connecting rod bearing shell of the connecting rod (IROX-coated)
The drop-forged cracked connecting rods with IROX coating are known from the B38/B46 engines.
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IROX coating - Crankshaft drive
Detailed magnification of the IROX coating
IROX-coated bearing shell
Oil film
IROX coating
Bearing shell
Binding resin
Hard particle
Solid lubricant
The IROX coating is applied to a conventi
Chain drive - Crankshaft drive
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-vacu
Chain tensioner
Chain tensioner
Tensioning rail
Sealing sleeve
Chain tensioner with screw thread
Due to the cylinder head manufacturing process, the chain tensioner now has a
sealing sleeve with a
height of 12
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Introduction
The Electrical Machine Electronics (EME) is primarily used as control
electronics for the electrical
machine. It is also responsible for converting the direct current voltage from
the high-voltage battery
unit (up to approximately 354.2 V DC) into a three-phase AC voltage for
electrical machine m
Jump-starting
General information
If the battery is discharged, the engine can be
started using the battery of another vehicle and
two jumper cables. Only use jumper cables with
fully insulated clamp handles.
Safety information
DANGER
Contact with live components can lead to an
electric shock. There is a risk of
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