Fresh Air System E65, E66 N73/N73TU

Fresh air system E65, E66 N73/N73TU





Introduction
> E73
The fresh air system of the N62 engine has been adapted for the N73 engine.

> N73TU with introduction 09/06
The N73TU satisfies the legal emissions limits, e.g. Euro 4 standard for Europe or LEV II for the USA (LEV: Low Emission Vehicle).
Measures on the fresh air system:
- modified fleece inserts in intake noise damper


Brief description of components
The fresh air system consists of the following components:

- 2 auxiliary air flaps
The engine receives more air via the auxiliary air flaps.

- Solenoid valve for auxiliary air flaps
- 2 diaphragm canisters
- 2 intake air pipes
- 2 air cleaner housings with air cleaner
- 2 intake air sound resonators
- 2 hot-film air mass meter
- 2 air ducts to throttle valves
- 2 throttle valves
- Intake manifold
- 2 intake manifold pressure sensors
- Pressure control valve for engine ventilation
- Secondary air pump
- 2 secondary air valves

System functions
There are no new functions in the fresh air system of the N73, N73TU.

Notes for service staff
Service staff should note the following points:

- General information: ---
- Diagnosis: ---
- Encoding/programming: ---
Subject to change.