Repair manual

Engine Mechanicals
12
Changing Over Between
Working Ranges
The illustration below shows in schematic form the
working range of the AVS when the engine is at operating
temperature.
It can be seen that the small valve lift is used up to
medium engine speeds of approximately 3100 rpm.
Note
This illustration shows an example of
a torque curve and AVS operating point.
Both are dependent on the current ECM
software version, and can change in the
course of ongoing model development.
In the engine speed range required for change-over to
large valve lift, the intake manifold flaps are also opened
wide.
Engine Speed in [rpm]
Audi Valve Lift System (AVS) in the Operating Ranges
1
2
3
tfil LevlaV egraLtfiL evlaV llamS
Operating Point (at approximately 3100 rpm)
Torque M in lb ft (Nm)
266 (360)
221 (300)
133 (180)
177 (240)
44 (60)
86 (120)
1000
2000
3000
4000
5000
6000
7000