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, Volume 73, Issue 6, pp 60–65 | Cite as

Simulation Method for Diesel Fuel Entry Into Lubrication Oil

  • Markus Ehrly
  • Markus Jakob
  • Matthias Budde
  • Stefan Pischinger
Research Injection

the exhaust aftertreatment systems in today’s passenger car diesel engines require a high temperature level in the exhaust or must be operated with a rich mixture for regeneration purposes. Both can be implemented using late post injections, but these lead to the well-known problem of oil dilution. As part of a FVV research project, a simulation method was developed at the Institute for Combustion Engines at RWTH Aachen University in cooperation with the Institute for Measurement technology at the technical University Hamburg-Harburg and the Institute for Aerospace thermodynamics at the University Stuttgart. this simulation method allows calculating the fuel entry into engine oil.

1 Motivation

Today’s emission limits require the use of particulate filters in diesel engines and the use of NO x storage catalysts, for example to reduce NO xlevels. Both systems necessitate intermittent regeneration. The high exhaust temperatures that are needed for exhaust aftertreatment can be achieved by...



This article is the scientific result of the research project “Developing a Simulation System for Diesel Fuel Entry into Engine Oil Considering the Operating Conditions during Regeneration Mode”, assigned by Forschungsvereinigung Verbrennungskraftmaschinen e. V. (FVV, Frankfurt). The project was supported by a working group of FVV under the supervision of Dr. Annette C. Jooss, Daimler AG. We would like to thank this working group for the great support. Furthermore, we thank Dipl.-Ing. Andreas Behn, Dipl.-Ing. Matthias Feindt, Dr.-Ing. Sven Krause, Dr.-Ing. Michael Wittler, Dr.-Ing. Grazia Lamanna and Dipl.-Ing. Hassan Gomaa for their active support in this research project.


  1. [1]
    Scholz, V.; Frisse, P.; Herrmann, H.-O.: Exhaust Emission Design to Improve Particulate Filter Regeneration. SAE-Toptec, September 2000, GöteborgGoogle Scholar
  2. [2]
    Krüger, M.; Wiartalla, A.; Lichtenberg, T.; Körfer, T.: Emission Concepts for Future Passenger Car Diesel Engines. 24th International Vienna Motor Symposium, 2003Google Scholar
  3. [3]
    Reggie, Z.; Yiqun, H.; Magdi, K.: Methodologies to Control DPF Uncontrolled Regenerations. SAE Technical Paper Series, 2006-01-1090Google Scholar
  4. [4]
    Krüger, M.; Wiartalla, A.; Scholz, V.; Adomeit, P.; Rohs, H.: Regeneration Mode and Engine-Related Long-Term Effects in Diesel Engines. 13th Aachen Colloquium for Vehicle and Engine Engineering, 2004Google Scholar
  5. [5]
    Stein, C.; Budde, M.; Krause, S.; Brandt, S.; Schlerege, F.: Beeinflussung der Schmierölemissionen durch die Gemischbildung im Brennraum, FVV Zwischenbericht zum Vorhaben Nr. 933, Heft R545, 2009, 2004Google Scholar
  6. [6]
    Pischinger, S.; Schnitzler, J.; Wiartalla, A.; Scholz, V.: Investigation of a NONOx-Adsorber Catalyst used with a Passenger Car Diesel Engine. In: MTZ 64 (2003), No. 3Google Scholar
  7. [7]
    Budde, M.; Jakob, M.; Ehrly, M.; Lamanna, G.: Developing a Simulation System for Diesel Fuel Entry into Engine Oil Considering the Operating Conditions during Regeneration Mode. Final report by FVV, project No. 990, 2011Google Scholar
  8. [8]
    Baumgartner, C.: Modelling the Influence of Cavitation on the Primary Jet Breakup during High Pressure Diesel Injection. VDI Series 12, No. 543, VDI-Verlag, Düsseldorf, 2003Google Scholar
  9. [9]
    Behn, A.; Feindt, M.; Krause, S.; Matz, G.: Entwicklung eines Gasentnahmesystems zur kurbelwellenwinkelaufgelösten Entnahme von Ölemissionen aus dem Brennraum von Dieselmotoren. Informationstagung Motoren, Herbsttagung 2011, Fulda, Heft R 556Google Scholar
  10. [10]
    Amsden, A. A.; O’Rourke P. J.; Butler, T. D.: KIVA-II: A Computer Program for Chemically Reactive Flows with Sprays. Los Alamos National Laboratory Report, LA-11560-MS, 1989Google Scholar
  11. [11]
    Kong, S.-C.; Han, Z.; Reitz, R. D.: The development and application of a diesel ignition and combustion model for multidimensional engine simulations. SAE 950278Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2012

Authors and Affiliations

  • Markus Ehrly
    • 1
  • Markus Jakob
    • 1
  • Matthias Budde
    • 1
    • 2
  • Stefan Pischinger
    • 1
  1. 1.Institute for Combustion Engines (VKA) of the RWTH Aachen UniversityGermany
  2. 2.AachenGermany

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