MTZ industrial

, Volume 6, Issue 3, pp 32–39 | Cite as

Simplified High Performance Injection Systems for Dual-fuel Engines

  • Clemens Senghaas
  • Michael Willmann
  • Hans-Joachim Koch
Development Fuel Injection

With their fuel flexibility and low emissions in the gaseous fuel mode, dual-fuel engines are increasingly popular. Currently, they require two fuel injection circuits, one for pilot injection in the gas fuel mode and one for 100 % liquid fuel in the diesel mode. To counter this complexity, injection specialist L’Orange is developing a simplified injection system for dual-fuel engines having a single fuel circuit with one high pressure pump plus one injector per engine cylinder.


The global population of gas engines has increased substantially in recent years due to their favourable combination of high efficiency, low emissions and fuel flexibility. The latter ensures unlimited engine operation even if the gas supply is interrupted, while ignition of the fuel gas using a liquid fuel pilot injection has advantages in comparison with spark-plug ignition.

However, in spite of such advantages, dual-fuel injection systems also have disadvantages in terms of complexity and...


High Pressure Pump Spray Penetration Combustion Investigation Heterogeneous Combustion Drift Compensation 
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.



Part of the presented results are the outcome of the COMT (Competence Centers of Excellent Technologies) K1-Center EvoLET, promoted by the Austrian Research Promotion Agency (FFG).


  1. [1]
    Senghaas, C.; Schneider, H.; Reinhard, S.; Jay, D.; Ehrstrom, K.: “Second generation of HFO injection system for medium speed engines to fulfill future requirements”, CIMAC Congress 2010, BergenGoogle Scholar
  2. [2]
    Senghaas, C.; Ligensa, M.; Reischmann, K.: “New platform based Common Rail Injector for MTU series 1163”, CIMAC Congress 2013, ShanghaiGoogle Scholar
  3. [3]
    Wilmann, M., Senghaas, C., Schmidt, R.-M..: “New Generation DUAL-FUELInjection Systems”, AVL Large Engine Tech Days 2014, GrazGoogle Scholar
  4. [4]
    Kiesling, C.: “Detailed Assessment of an Advanced Wide Range Diesel Injector for dual-fuel Operation of Large Engine”, CIMAC Congress 2016, HelsinkiGoogle Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2016

Authors and Affiliations

  • Clemens Senghaas
    • 1
  • Michael Willmann
    • 1
  • Hans-Joachim Koch
    • 1
  1. 1.L’Orange GmbHStuttgartGermany

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