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MTZ industrial

, Volume 4, Issue 1, pp 26–33 | Cite as

Second Generation Two-stage Turbocharging for Large Four-strokes

  • Thomas Behr
  • Melanie Hubacher
  • Martin Seiler
Cover Story Four-Stroke Turbobocharging

The first four-stroke engines with two-stage turbocharging are on the market. At ABB, two-stage turbocharging is already entering its second generation. On diesel engines the aim is to further enhance NOx emissions, fuel consumption and power density and on gas engines power density, load acceptance and operating flexibility. Ease-of-mainteneace is also a high priority.

Two-stage turbocharging benefits

The first generation of ABB Turbo Systems’ Power2 two-stage turbocharging concept has been successfully applied on large four-stroke engines since 2010 [1, 2, 3]. Engine efficiency gains and emissions reduction have been demonstrated which are clearly beyond the potential of single-stage turbocharging. ABB Turbo Systems has now developed the second generation of its Power2 systems for large four- stroke engines, to fully realise the potentials offered by the presence of two turbocharging stages.

A key driver is enabling extreme Miller Cycles on large four-stroke engines. On diesel...

Keywords

Pressure Ratio Turbine Inlet Miller Cycle Shaft Seal High Pressure Ratio 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Nomenclature

LP

Low pressure

HP

High pressure

TC

Turbocharger

TI

Mass flow turbine inlet

CO

Mass flow compressor outlet

TTI

Temperature turbine inlet

TCI

Temperature compressor inlet

ηT

Turbocharging efficiency

Notes

Thanks

The authors would like to thank the ABB Turbo Systems’ Power2 800-M project team and everyone who contributed to this new product.

References

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Copyright information

© Springer Fachmedien Wiesbaden 2014

Authors and Affiliations

  • Thomas Behr
    • 1
  • Melanie Hubacher
    • 1
  • Martin Seiler
    • 1
  1. 1.ABB Turbo SystemsBadenSwitzerland

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