AFB vs. New V6 Engines: Key Differences

Hello everyone.

What are the differences between the AFB engine and the new V6 TDI engines?

How can the performance of this engine be increased? What is the maximum possible performance?


Why are the new cars more fuel-efficient?


Best regards.

Sepp.

Here's just the difference compared to the EURO3 180PS model!

• Pistons made from a new, more heat-resistant alloy to compensate for...
higher thermal load.
• Modification of the piston bowl shape to optimize the combustion process.
• Compression ratio reduced to 18.5:1 by increasing the piston bowl volume.
• Piston/connecting rod with a trapezoidal head to compensate for the higher combustion pressure.
and to reduce the oscillating masses by approximately 10%.
• Crankcase with an additional ventilation duct on the front of the engine to reduce...
of the oil content in the engine ventilation system.
• Reduction of air entrainment in the engine oil through lateral baffles in the...
Crankcase.
• Crankcase ventilation system with a cyclone oil mist separator to reduce...
Oil content in the oil mist and blow-by gas.
• Radial piston distributor injection pump VP44S3 with 3 pistons for higher...
Injection pressures. At rated power, injection pressures of up to 1850 bar are achieved.
• Neu ist die Voreinspritzung über die Ansteuerung des Magnetventils. Sie sorgt in
Connection to the dual-nozzle holder assembly for reducing...
Popping or crackling sounds, especially when the engine is cold.
• Six-hole instead of five-hole injectors for improved fuel-air mixture preparation and reduced emissions.
• Turbocharger made from a more heat-resistant material, with an optimized turbine and...
Compressor wheel and improvements in the kinematics of the guide vane adjustment.
• Pre-catalyst located directly after the turbocharger.
• A larger oil-coolant heat exchanger compensates for the effects caused by the...
Increased performance leads to higher thermal stress on the engine oil.
• Fuel cooling using a fuel-coolant heat exchanger and...
Engine coolant-to-air heat exchanger integrated into the engine cooling circuit.
• EDC15 M engine control unit.

And those are just the changes that I am aware of. The EURO4 V6 TDI is even supposed to have 7-hole fuel injectors.

Regards,

Manuel.