MTZ worldwide

, Volume 78, Issue 12, pp 16–21 | Cite as

Analysing Engine Friction in View of the New WLTC Driving Cycle

  • Hannes AllmaierEmail author
  • David E. Sander
  • Slavitsa Damjanovic
  • Philippe Mallet
Cover Story

The new WLTC test cycle not only takes into account a large range of operating conditions of the engine, but also brings about fundamental changes in weighting operating states. Virtual Vehicle and Renault therefore use an innovative friction measurement and calculation method for the Energy dCi 130 engine in order to analyse engine friction in detail, particularly with regard to the new test cycle.

Novel Method for Determining Friction

With increasingly strict legislation and further the introduction of the new testing procedure WLTP, the highly detailed knowledge of engine friction becomes essential to obtain further fuel economy reductions. The new Worldwide Harmonized Light-duty Vehicles Test Cycle (WLTC) will not only test a larger range of engine operation conditions, but also brings fundamental changes to the way the powertrain is evaluated. In the following, a novel engine friction testing method is used together with a highly accurate simulation to analyse engine friction...



The authors of Virtual Vehicle express their gratitude to the partner Renault SAS for their friendly cooperation and permission to publish the results. This project has received partial funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No. 636380. Furthermore, the work in this project was partially funded by the COMET K2 - Competence Centres for Excellent Technologies Programme of the Austrian Federal Ministry for Transport, Innovation and Technology (bmvit), the Austrian Federal Ministry of Science, Research and Economy (bmwfw), the Austrian Research Promotion Agency (FFG), the Province of Styria and the Styrian Business Promotion Agency (SFG).

Copyright information

© Springer Fachmedien Wiesbaden GmbH 2017

Authors and Affiliations

  • Hannes Allmaier
    • 1
    Email author
  • David E. Sander
    • 2
  • Slavitsa Damjanovic
    • 3
  • Philippe Mallet
    • 4
  1. 1.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany
  2. 2.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany
  3. 3.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany
  4. 4.Springer Fachmedien Wiesbaden GmbHWiesbadenGermany

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