BMW 5 Series: Air intake and exhaust emission systems
Air intake duct
In contrast to the 4- and 6-cylinder gasoline engines, the 8-cylinder gasoline engine has a two-branch intake system. This ensures that the necessary air volume is made available to the engine in every load range.
Gasoline engine air intake duct in the G30
- B46 engine
- B58 Engine
- N63TU2 Engine
Resonator
The pulsating gas exchange noise of the reciprocating engine is damped in the air intake duct.
Helmholtz resonators are technical solutions for achieving the maximum air duct cross-section and minimum packaging space volume vehicle-specific damping specifications.
Hot film air mass meter
The intake air mass is filtered in all engines via an 8th generation hot film air mass meter.
The hot film air mass meter has the following four electrical connections:
- Voltage supply (+)
- Ground (-)
- Sensor signal (SENT data protocol)
- Not assigned
A manipulation-proof SENT signal is available for data transfer.
8th generation hot film air mass meter in the G30
- Voltage supply (5 V)
- Ground connection
- Sensor signal (SENT protocol)
- Not assigned
- Connector encoding
The 8th generation hot film air mass meter has a specific electric connector, this is so it cannot be swapped between the various engine versions.
The following table provides an overview of the various sensor generations in the gasoline engine.
Charge air cooling
All gasoline engines are equipped with indirect charge air cooling.
Intake system with integrated, indirect charge air cooler using the example
of the B58 engine
- Throttle valve fixture
- Tank ventilation
- Ventilation line to the expansion tank
- Charge air cooler
- Coolant return
- Coolant supply
- Cylinder head connection
Exhaust emission system
The 4- and 6-cylinder gasoline engines have an electrical exhaust flap on the right side. The 8-cylinder gasoline engines are equipped with two electrical exhaust flaps.
Overview of exhaust gas variants in the G30
- BMW 530i
- BMW 540i
- BMW M550i
- Front silencer
- Center silencer
- Rear silencer
- Electrical exhaust flap actuator
Tailpipe versions
Gasoline engine exhaust tailpipe variants in the G30
- BMW 530i
- BMW 540i
- BMW M550i
BMW 530i models with optional equipment M sport package (OE 337) use the exhaust tailpipe version from figure B.
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Active air flap control
It was possible to carry over the active air-flap control from the G12. The
cooling surfaces at the front
of the vehicle can be closed by means of two separate air flaps. This reduces
the drag coeff
Gasoline engines
B468/B58 Engine
The B46/B58 engines have two separate coolant circuits. The coolant in the
low-temperature coolant
circuit to cool the charge air. The coolant in the high-temperature coolant
circuit
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Warning function
Light in the exterior mirror
If there is a risk of collision
If there is a risk of collision, the light in the exterior
mirror flashes and the steering wheel vibrates.
An active steering intervention takes
place to prevent collisions and maintain the vehicle
within its own lane. The steering inter
Front/Rear seats
Front seats
Memory sports seat, driver's side, front
Memory seat and memory sports seat, driver's side, front
Fuses in the power distribution box, front right
Exterior mirror, front passenger's side
Body Domain Controller (BDC)
CAN terminator
Motor, longitudinal seat adjustment
Motor, seat a
