- air intake and air ducts;
- air purification filter;
- air flow meter;
- inlet pipeline (collector);
- temperature and pressure sensors of incoming air;
- turbocharger and charge air cooler;
- soundproof cover.
Intake manifold
The intake manifold of the BMW X5 E53 is designed to supply air to the intake valves of the cylinders and metered exhaust gas in the recirculation system.
Air flow meter
The main parameter that determines the dosage of fuel is the volume of incoming (sucked) of air, registered by a hot-wire type air flow meter, according to the principle of operation, similar to engines «M54» .. «N62».
To reduce the noise level of the air sucked in by the engine, a soundproof casing consisting of several panels is provided.
Air supply by turbocharger (TC) discussed in detail in section «exhaust system».