System Protection
As on the N54 engine, in the event of the coolant or engine oil being subject to excessive temperatures, certain functions in the vehicle are influenced in such a way that more energy is made available to the engine cooling system, i.e. temperature increasing loads are avoided.
With the introduction of the N63 engine, indirect charge air cooling is used for the first time at BMW. Heat is taken from the charge air by means of an air-to-coolant heat exchanger. This heat is then given off via a coolant-to-air heat exchanger into the ambient air. For this purpose, the charge air cooling system has its own low temperature cooling circuit, which is independent of the engine cooling circuit.
Scheme 954
| Index | Explanation |
|---|---|
| A | Electric coolant pump for charge air cooling |
| B | Vent line |
| C | Intercooler |
| D | Expansion tank for charge air cooling |
| E | Radiator for charge air cooling |
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