BMW 3: Connecting rod - Crankshaft drive
BMW 3 Series G20 (2018-2024) 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
SEE MORE:
Concept, General information, Safety information
Concept
PDC is a support when parking. Objects that you
are approaching slowly in front of or behind the
vehicle are indicated by signal tones and a display
on the Control Display.
Depending on the equipment version: obstacles
at the side of the vehicle that are detected by the
side ultrasonic sens
Removing the round high-voltage connector
The following figures show the approach for releasing the round high-voltage
connector, as used
for example on the high-voltage cable from the Electrical Machine Electronics to
the convenience
charging electronics.
Depending on the installation location, different connectors may be used. They
ar
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