8
Engine mechanical system
Intake system
The fresh air intake system has a twin-branch design to reduce pressure losses. Both intake tracts are brought
together at the intake manifold upstream of the throttle valve module.
A hot film air mass meter per intake tract and an intake air temperature sender in the air mass meter G70 are used
to determine the intaken quantity of fresh air.
Intake manifold
The intake manifold is comprised of four bolted and
bonded magnesium components.
The Touareg is fitted with a three-stage variable
intake manifold and the Phaeton with a two-stage
variable intake manifold. In comparison with the
three-stage version, the two-stage design allows
intake tracts with high-volume cross-sections to be
implemented. This leads to an increase in engine
output.
In the event of repair, the entire intake
manifold has to be renewed, as the
bonded surfaces can no longer be sealed.
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Air mass meter G70
Intake air temperature sender G42
cylinder bank 1
Throttle valve module J336
Air mass meter 2 G246
cylinder bank 2
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