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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
  • 90 Downloads

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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