BMW 3: Exhaust System
BMW 3 Series G20 (2018-2024) Training manual / B46TU-B48TU Engines / Cooling System / Exhaust System
Exhaust turbocharger
Exhaust turbocharger
The exhaust turbocharger can be replaced individually and is exclusively made of steel. The boost charge pressure is still controlled by an electrical wastegate valve.
The Turbo on the B46TU and B48TU are different in design.
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Fuel System
The fuel system is made up of the fuel supply and fuel preparation systems.
The fuel supply includes
the fuel tank with all mounted parts and the fuel lines up to the engine
compartment.
The fuel p
Fuel preparation
The fuel preparation has again been adapted to meet the emission legislation
requirements. The high
pressure pump and the injectors have been revised and designed for an fuel
injection pressure of
3
Fuel high-pressure pump
The single-piston high pressure pump by Bosch, well-known from the B46
engine, is used. The high
pressure pump HDP6 is driven by a triple cam which is attached to the exhaust
camshaft. To be able
to
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Number of safety belts and
safety belt buckles
The vehicle is fitted with five safety belts to ensure
occupant safety. However, they can only offer
protection when adjusted correctly.
The two outer safety belt buckles of the rear
seats are intended for the persons sitting on the
left and right.
The center safety belt buckle of the rear seats is
Power electronics in the convenience charging electronics
The power electronics for the conversion of the AC voltage from the charging
socket to direct current
voltage, which is required for charging the high-voltage battery unit, are
housed in the convenience
charging electronics. The AC voltage is supplied as a single phase. The input
voltage, which c
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