ATZoffhighway worldwide

, Volume 9, Issue 3, pp 38–42 | Cite as

Layout of Highly Stressed Injection and Motor Components

  • Jochen Heizmann
  • Hans-Willi Raedt
  • Patrice Lasne
  • Helmut Dannbauer

Hydraulic autofrettage as a means of increasing fatigue life of components charged with internal high-pressure (for example common rails for Diesel-injection systems) is establishing itself progressively in the field of off-highway engines. During computational layout of this process step, consideration of anisotropic material behaviour is of primary importance. So far, local quite possibly directional component-strength (such as due to prior autofrettage) has not been taken into account among standards to evaluation of durability for forged components. In the context of a joint development project this gap has been closed by Hirschvogel Automotive Group, Engineering Center Steyr and Transvalor.

Principle of Hydraulic Autofrettage

Injection pressures beyond 2000 bar contribute significantly to a more efficient exploitation of fuel in prospective engines. The so-called autofrettage method ensures, that hydraulic tubes and pipes are able to withstand ever-increasing alternating loads [ 1]...


Residual Stress Fatigue Life Ultimate Tensile Strength Compressive Residual Stress Common Rail 
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.



The authors would like to thank Dipl.-Ing. Axel Werkhausen, FEMFAT-Sales- and Support-Manager, and Dr.-Ing. Christian Gaier, Team-Manager of the FFEMFAT Development Department, both at Engineering Center Steyr GmbH & Co. KG in St. Valentin (Austria), as well as Dipl.-Ing. Olivier Krafft, Sales Engineer Northern Europe at Transvalor S.A. in Mougins Cedex (France) and Dipl.-Ing. Angela Kotte, Development Engineer for Material & Technology in the Advanced Engineering Department at Hirschvogel Automotive Group in Denklingen (Germany), for their contribution during the implementation of the development project.


  1. [1]
    N.N.: FELSS — Shortcut Technologies., access 04.06.2016
  2. [2]
    Carlucci, D.; Jacobson, S.: Ballistics — Theory and Design of Guns and Ammunition. Boca Raton: Taylor & Francis Group, 2014.Google Scholar
  3. [3]
    Narayanan, R.; Dixit, U.: Advances in Material Forming and Joining. New Delhi: Springer, 2015.CrossRefGoogle Scholar
  4. [4]
    N.N.: Wikipedia: Goodman Relation., access 04.06.2016

Copyright information

© Sringer Fachmedien Wiesbaden 2016

Authors and Affiliations

  • Jochen Heizmann
    • 1
  • Hans-Willi Raedt
    • 1
  • Patrice Lasne
    • 2
  • Helmut Dannbauer
    • 3
  1. 1.Hirschvogel Automotive GroupDenklingenGermany
  2. 2.Development of Transvalor S.A.MouginsFrance
  3. 3.Engineering Center Steyr GmbH & Co. KGSt. ValentinAustria

Personalised recommendations