29
Intake manifold with intake manifold flaps
The intake manifold is a two-part sand casting comprising the
intake plenum and the intake arm gallery. A pneumatically actu-
ated system of flaps is integrated in the intake gallery. In conjunc-
tion with the tumble intake port, this system produces the
turbulence necessary for optimal mixture homogenisation.
The flap position requested by the engine control unit is measured
by the intake manifold flap potentiometer G336 and monitored by
the engine control unit.
When the intake manifold flap valve N316 is not activated, no par-
tial vacuum is admitted and the intake manifold flaps are fully
closed.
The intake plenum, in combination with the rocker cover and the
small engine shroud, is the central component of the engine bay
design - a design which openly displays the technology behind this
Audi RS model, too.
451_038
Intake manifold upper partPositive crankcase ventilation system intake Intake manifold lower part
Vacuum cell
Actuation of the intake manifold flap shaftInjector (six-hole)
Intake manifold flaps
Fuel rail
Intake manifold flap potentiometer G336
Turbocharger divert air valve N249
Intake manifold pressure sender G71
Intake air temperature sensor G42
Air recirculation
channel
Intake manifold flap
