N63B44O0 Engine: Notes
The N63 engine is the successor to the N62 engine. First introduced with the E71 X6, it is the first engine worldwide with an optimized package. In order to achieve the demanding performance targets with an optimal package and weight, the twin exhaust turbochargers and catalytic converters have been placed in the V chamber between the cylinder banks, which meant swapping the positions of the intake and exhaust ports. The short pipe lengths and large cross-sections mean that this arrangement enables minimization of the pressure losses on the intake and exhaust sides.
Innovations of the N63 engine:
- Installed in several vehicle model series (E71/E72/F01/F02/F04/F07)
- Exhaust turbochargers are installed in the engines V chamber
- Catalytic converters are also in the V chamber (close to the engine)
- Direct fuel injection with piezo injectors
- MSD85 engine management system, fluid-cooled with FlexRay connection
- Indirect charge air intercooling
- Diagonal torque converter bolting.