Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Air/oil separator with minimal space requirements in the crankcase venting system

Ölnebelabscheidung in der Kurbelgehäuseentlüftung auf engstem Raum


An important function for crankcase venting is the separation of oil mist from the blow-by gas. In this area, engine builders place widely varying demands on their development suppliers. Not only must air/oil separator systems be highly efficient, robust, functionally reliable, flexible and compact, they must also be cost-effective. Reinz-Dichtungs-GmbH, a Dana Corporation company, set up a global development team to take on the challenge. The result is one of today’s smallest and at the same time most efficient air/oil separator systems — the Multitwister.

This is a preview of subscription content, log in to check access.


  1. [1]

    Burkholz, A.: Droplet Separation. Weinheim: Wiley-VCH, 1989

  2. [2]

    Ramachandran, G.; Raynor, P. C.; Leith, D.: Collection Efficiency and Pressure Drop for a Rotary-Flow Cyclone. In: Filtration & Separation, September/-October 1994, p. 631–636, Elsevier Science Ltd. 1994

  3. [3]

    Greif, V.: Reduzierung des Druckverlustes von Zyklonabscheidern durch Rückgewinnung der Drallenergie sowie Abscheidung bei kleinen und kleinsten Staubbeladungen. Dissertation, Fortschr. Ber. VDI-Reihe 3 Nr. 470, Düsseldorf: VDI-Verlag, 1997

  4. [4]

    Fiedler, H. E.: Turbulente Strömungen. Vorlesungsskript März 2003, Technische Universität Berlin, 2003

  5. [5]

    Hoffmann, A. C., Stein, L. E.: Gas Cyclones and Swirl Tubes. Berlin: Springer-Verlag, 2002

  6. [6]

    Anderson, J. D.: Computational Fluid Dynamics: McGraw-Hill Inc., 1995

  7. [7]

    Fluent Version 6.2.16 & Gambit Version 2.2.30, Fluent Inc., Fluent User’s Manual, 2005

  8. [8]

    Bastias, P., et. al.: Air/Oil Separation in Cylinder Head Covers. Warrendale: SAE International, 2004

Download references

Rights and permissions

Reprints and Permissions

About this article

Cite this article

Bastias, P., Brückle, T., Caloghero, D. et al. Air/oil separator with minimal space requirements in the crankcase venting system. MTZ Worldw 66, 16–19 (2005).

Download citation


  • Cyclone
  • Pressure Loss
  • Separator System
  • Engine Test Bench
  • Development Supplier