MTZ industrial

, Volume 7, Issue 2, pp 40–47 | Cite as

GE’s J920 Gas Engine — 10.4 MW Power and more than 50 % Electrical Efficiency

  • Andreas Birgel
  • Robert Böwing
  • Christian Trapp
  • Andreas Wimmer
Development Gas Engines

This article discusses the technology used in the 24 bar BMEP version of GE’s Jenbacher J920 FleXtra gas engine. This advanced gas engine provides customers with an almost 10 % power increase and more than 50 % electrical efficiency (more than 51 % engine efficiency) combined with fast startup capabilities, an increased lifetime, and proven reliability to enable greater efficiency and power output. A newly developed combustion concept — enabeling TA Luft and IED 2012 compliant versions — helps the engine reach these ambitious targets. The J920 FleXtra gas engine uses an optimised two-stage turbocharging system with enhanced air handling and model-based predictive engine controls as well as thermomechanical optimisation.

The J920 Gas Engine

In 2011, GE introduced the J920 FleXtra concept engine [1], a new clean-sheet 20-cylinder four-stroke gas engine in the 10 MW class. Built on the successful two-stage turbocharged J624, it set a milestone for a 10 MW engine with an engine speed of...


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Copyright information

© Springer Fachmedien Wiesbaden GmbH 2017

Authors and Affiliations

  • Andreas Birgel
    • 1
  • Robert Böwing
    • 1
  • Christian Trapp
    • 1
  • Andreas Wimmer
    • 2
  1. 1.GE Distributed PowerJenbachAustria
  2. 2.Graz University of Technology and CEO of the LEC (Large Engines Competence Center)GrazAustria

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