Air Intake System
Several functions of the air intake system have been optimized for the N55 engine:
- The unfiltered air is routed up to the intake silencer (similar to the N54 engine).
- The filtered air duct is completely new and simplified to accommodate the new turbocharger.
- The crankcase ventilation system has been redesigned.
- The diverter valve has been integrated into the compressor housing of the turbocharger.
- The fuel tank ventilation has been correspondingly adapted.
The design layout of the air intake system has been simplified, compared to the dual turbocharger set up of the N54.
INDEX EXPLANATION CHART
| Index | Explanation |
|---|---|
| 1 | Intake snorkel |
| 2 | Unfiltered air pipe |
| 3 | Intake silencer |
| 5 | Air intake silencer cover |
| 6 | Hot-film air mass meter |
| 7 | Crankcase ventilation connection |
| 8 | Exhaust turbocharger |
| 9 | Charge-air pipe |
| 10 | Intercooler |
| 11 | Charge-air pipe |
| 12 | Boost pressure-temperature sensor |
| 13 | Throttle valve |
| 14 | Intake manifold |
INDEX EXPLANATION CHART
| Index | Explanation |
|---|---|
| A | Unfiltered air |
| B | Purified air |
| C | Heated charge air |
| D | Cooled charge air |
| 1 | Intake snorkel |
| 2 | Unfiltered air pipe |
| 3 | Intake silencer |
| 4 | Filter element |
| 5 | Air intake silencer cover |
| 6 | Hot-film air mass meter |
| 7 | Crankcase ventilation connection |
| 8 | Exhaust turbocharger |
| 9 | Charge-air pipe |
| 10 | Intercooler |
| 11 | Charge air pipe |
| 12 | Boost pressure-temperature sensor |
| 14 | Intake air manifold |