BMW N63
 |
| BMW N63 engine | |
|---|---|
| Overview | |
| Manufacturer | BMW, Bayerische Motoren Werke AG |
| Production | 2008- |
| Body and chassis | |
| Class | V8 |
| Chronology | |
| Predecessor | BMW N62 |
The N63B44 is a 4.4L, direct-injected, twin-turbocharged V8 automobile engine from BMW. It was launched in 2008 as an engine powering the BMW X6 xDrive50i[1], and later the F01 BMW 750i.[2]
Specifications
| Engine | Displacement (cc) | Power @rpm | Torque @rpm | Redline (rpm) | Year |
|---|---|---|---|---|---|
| N63B44 | 4395 | 408 PS (300 kW; 402 hp)@5500-6400 | 600 N⋅m (440 lb⋅ft)@1750-4500 | 7000 | 2008- |
N63B44 features a reverse-flow air design in which the turbochargers are mounted in the engine valley and the intake manifolds are located on the sides of the block. This new design creates a more compact engine package and reduces the width of the assembled engine. The engine uses air-to-water intercoolers, which is more efficient and provides a shorter air path than using a standard air-to-air intercooler. [1]
Similar to the N54B30, the N63B44 does not use the second generation Valvetronic technology found in other current engines. The principal advantage of Valvetronic is the reduction of intake vacuum, which is not an issue in the pressurized intake found in a turbo-charged engine.
In terms of performance, the N63 is a close match to the N73 V12 engine found in the previous-generation E65 760i/Li, so the V12 engine had to be redesigned for the F01 760i/Li in order to maintain its status as the flagship of the range.[3]
Applications:
References
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