Specifications

The exhaust turbocharger module is a derivative of the four-cylin-

der TFSI engine. The exhaust gases are admitted separately into

the turbine from the "additional" cylinder. The figure below shows

the separate connection between the exhaust turbocharger and

cylinder no. 3.

The exhaust turbocharger module attachment system, like the

modular design principle, derives from the four-cylinder engines.

The "clamping flange attachment system" is again used here (see

diagram 451_051). A modified screw attachment system will be

introduced at a later date.

Exhaust end

The exhaust end consists of the following subassemblies:

• Manifold exhaust turbocharger (exhaust turbocharger) module

• Close-coupled pre-catalyst

• Twin-flow headpipe with isolating elements

• Two underbody catalytic converters with the following centre

silencers

• Rear silencer with twin tailpipes

451_051

451_036

Compressor intake manifold

Exhaust gas temperature sender -1-

G235

Separate cylinder connection from

exhaust turbocharger

Exhaust manifold

Heat-resistant self-locking collar nut

Clamping rail

Highly heat resistant headless bolts

Self-locking Helicoil collar nut

Two-layer beaded metal gasket

Clamping flange attachment system