BMW 3: Exhaust System
BMW 3 Series G20 (2018-2025) 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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Automatic climate control - switching on/off
Switching on
Press any button except for the following:
Switching off.
Rear window defroster.
Lower air flow button side.
Seat heating.
Switching off
Complete system:
Press the button until the
control panel
switches off.
Temperature
Concept
The automatic climate control achieves the set
temp
In the vicinity of the steering wheel
Safety switch
Power windows
Exterior mirror operation
Central locking system
Unlocking
Locking
Seating comfort features
Memory function
Lights
Front fog lights
Light switch
Lights off
Daytime running lights
Parking lights
Automatic headlight control
Adaptive light functions
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