System overview
The following illustration shows a system overview of the valve gear in engine N55:
| Item | Explanation |
|---|---|
| 1 | Power distribution box, engine compartment |
| 2 | Valvetronic relay |
| 3 | Digital engine electronics |
| 4 | VANOS solenoid valve, inlet |
| 5 | VANOS solenoid valve, exhaust |
| 6 | Camshaft sensor, intake camshaft |
| 7 | Camshaft sensor, exhaust camshaft |
| 8 | Valvetronic servomotor |