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...


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.



Low pressure


High pressure




Mass flow turbine inlet


Mass flow compressor outlet


Temperature turbine inlet


Temperature compressor inlet


Turbocharging efficiency



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


  1. [1]
    Raikio, T.; Hallback, B.; Hjort, A.: Design and first application of a two-stage turbocharging system for a medium-speed diesel engine. Paper No. 82, CICIMAC, Bergen, 2010Google Scholar
  2. [2]
    Laiminger, S.; Trapp, C.; Schaumberger, H.; Fouquet, M.: Die nächste Generation von Jenbacher Gasmotoren von GE — die wegweisende Kombination von zweistufiger Aufladung und innovativen Brennverfahren. 7th Dessau Gas Engine Conference, Dessau, 2011Google Scholar
  3. [3]
    Tinschmann, G.; Lang, J.; Thalhauser, J.; Klausner, J.; Amplatz, E.; Trapp, C.: Gas Engines with Two-Stage Turbocharging — Field Experience, Design Opportunities for different Applications, further Development. 17. Aufladetechnische Konferenz, Dresden, 2012Google Scholar
  4. [4]
    Codan, E. et al.: Two-stage Turbocharging Flexibility for Engine Optimization. Paper No. 293, CICIMAC, Bergen, 2010Google Scholar
  5. [5]
    Wik, C.; Hallback, B.: Utilisation of two-stage turbo charging as an emission reduction mean on a Wärtsilä four-stroke medium-speed diesel engine. Paper No. 101, CICIMAC Vienna, 2007Google Scholar
  6. [6]
    Wirth, K.; Rickert, C.; Schlemmer-Kelling, U.: Die Entwicklung der Baureihe M 32 — Eine Erfolgsgeschichte. 2. Rostocker Grossmotorentagung, Rostock, 2012Google Scholar
  7. [7]
    Codan, E. et al.: Applications and Potentials of two-stage turbocharging. 14. Aufladetechnische Konferenz, Dresden, 2009Google Scholar
  8. [8]
    Meier, E.: Part load operation of very high turbocharged four-stroke marine diesel engines. CICIMAC, Paris, 1983Google Scholar
  9. [9]
    Millo, F.; Gianiglio, M.; Delneri, D.: Combining dual stage turbocharging with extreme Miller timings to achieve NOx emissions reductions in marine diesel engines. Paper No. 210, CICIMAC, Bergen, 2010Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2014

Authors and Affiliations

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

Personalised recommendations