EU4 Polo 9N: Conversion with Modified Catalytic Converters?

Hello,

The 96 kW Polo is now available as an EU4-compliant vehicle.
The BLT engine was likely developed from the ASZ.
The hardware differences are largely similar to the 100 horsepower performance level.
AGR cooling, "throttle valve", other PDE - as far as I know.

But, strangely, all EU4 TDIs in the Polo (BAY, AXR, and BLT) also have a different turbocharger than the EU3 versions AMF, ATD, and ASZ.

Can anyone figure out why the "old" loaders are no longer good enough for EU4 ?

By the way, all 1.9 TDI engines in the 9N models are equipped with KKK turbochargers (instead of Garrett), only the 1.4 three-cylinder engines have Garrett turbochargers.

By the way, all 1.9 TDI engines in the 9N are equipped with KKK turbochargers (instead of Garrett), only the 1.4 three-cylinder engines have Garrett turbochargers.

Um, not the other way around... at least that's how it is with the A2, which has KKK turbochargers on its 3-cylinder TDIs...?

The AMF in the A2 also has a Garrett turbocharger (size 15).

Regards,

Olaf.

Could it be that they modified something on the turbine wheel to achieve a higher exhaust pressure for higher EGR rates?

mcgyver2k wrote:

Could it be that something was changed on the turbine wheel to achieve a higher exhaust pressure for higher EGR rates?

While this would likely lead to a decrease in the overall efficiency of the system, it seems that anything can be justified in the name of environmental protection, no matter how absurd.

@ulf:

By the way, all 1.9 TDI engines in the 9N model are equipped with KKK turbochargers (instead of Garrett).

Oh, is that why the ASZ engine in the Polo is about 2,000 euros cheaper as a replacement part than the ASZ engine in the Golf ?
The prices for new parts range from approximately 5,200 to 7,200 euros.

Roger wrote:

Oh, is the ASZ engine in the Polo therefore about 2,000 euros cheaper as a replacement part than the ASZ engine in the Golf ? The prices for new parts range from approximately 5,200 to approximately 7,200 euros ...

How dare you doubt "Made In Germany"? Shame on you...

ulf wrote:

mcgyver2k wrote: Could it be that something was changed on the turbine wheel to achieve a higher exhaust pressure for higher EGR rates? That would certainly lead to a deterioration in the overall efficiency of the charging system - but what nonsense is being fabricated in the name of the environment?

As emission regulations become stricter, eventually the EGR system will also be activated at full load.