BMW N62B44, Руководство пользователя

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N62 Engine
N62 Engine
Purpose of The System
The N62B44 engine is a completely new development from the NG (New Generation) series
and is available as a B44 (4.4 liter).
The development objectives were:
• Reduction in fuel consumption
• Reduction in emissions
• Increased power
• Improved torque and torque curve
• Improved engine acoustics
The most important features of
the new N62 engine are:
• 8 cylinders in a 90º V configu-
ration
• 2 four-valve cylinder heads
• Light-alloy design
• Newly-developed variable
intake manifold
• Valvetronic system
In conjunction with the Variable Intake Manifold, the Valvetronic system adapts the intake
valve lift to ensure optimum cylinder filling. The throttle valve use is limited during engine
operation to maintain a constant intake manifold vacuum.
T Th he e N N6 62 2 iis s tth he e b be es stt e en ng giin ne e iin n iitts s c clla as ss s.. A Att tth hiis s ttiim me e tth he erre e iis s n no o o otth he err e en ng giin ne e o on n tth he e m ma arrk ke ett
w wh hiic ch h u us se es s c co om mp pa arra ab blle e tte ec ch hn no ollo og gy y..
To achieve these objectives, enhancements
were made in the following areas:
• Engine mechanicals
• Treatment of exhaust emissions
• Valve timing
• Engine management control
• Intake air flow
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