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, Volume 73, Issue 6, pp 34–40 | Cite as

Twin-Jet Nozzle Injectors For Gasoline Engines

  • H. C. Franz Durst
  • Arthur Handtmann
  • Matthias Weber
  • Frank Schmid
Development Injection

Twin-jet nozzles are recommended for gasoline motor injectors because they allow an almost tailor-made drop generation that controls the injected mass of fuel and also the penetration depth. All of these spray characteristics can be adjusted independently of each other, i.e. the spray characteristics requirements specified by the combustion process are easily attainable with twin-jet injectors. In the following, FMP Technology, Geiger Fertigungstechnologie and KW Technologie present practical implementations of twin-jet nozzles for gasoline engines.

Motivation

There is a strong belief in the field of gasoline engine development that improvements can still be made in internal combustion engines to reduce emissions without any loss of motor performance. Apart from further developing the engines, however, this necessitates new developments of the major components that can be used to facilitate combustion and, above all, to control it. In particular, there is a need for improved...

Notes

Thanks

The work described in this publication was supported by L. Schilling and D. Haspel from the FMP Technology GmbH and also by Mr Handtmann and Mr Wanner of Handtmann Systemtechnik GmbH & Co. KG. The developments have been funded by the companies KW Technologie GmbH & Co. KG, FMP Technology GmbH und Geiger Fertigungstechnologie GmbH as well as by a sponsored project of the Bundesministeriums für Wirtschaft und Technologie (ZIM-Projekt) (Federal Ministry of Economics and Technology). Our special thanks to Mr Y. Han of FAU Erlangen-Nuremberg for repeating some of the measurements to confirm the data.

References

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    Ohnesorge, W.: Formation of Drops by Nozzles and the Breakup of Liquid Jets. In: Angew. Math. Mech. (1936), No. 16, pp. 355–258Google Scholar
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    Reitz, R. D.: Atomization and Other Breakup Regimes of a Liquid Jet. Princeton University, Ph.D. thesis, 1987Google Scholar
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    Dombrowski, N.; Johns, W. R.: The Aerodynamic Instability and Disintegration of Viscous Liquid Sheets. In: Chem. Eng. Sci. (1963), No. 18, pp. 203–214Google Scholar
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    Dombrowski, N.; Hooper, P.C.: A study of the sprays formed by impinging jets in laminar and turbulent flow. In: Journal of Fluid Mechanics (1964), No. 18, pp. 392–400zbMATHGoogle Scholar
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    Couto, H. S.; Bastos-Netto, D.; Mugueis, C.E.: Modeling of the Initial Droplet Size Distribution Function in the Spray Formed by Impinging Jets. INPE-Brazilian Space Research Institute Cachoeira Paulista, 12630, Sao Paulo, Brazil, 1991Google Scholar
  6. [6]
    Han, Y.: Private Communications. FMP Technology GmbH, Erlangen, July 2011Google Scholar

Copyright information

© Springer Fachmedien Wiesbaden 2012

Authors and Affiliations

  • H. C. Franz Durst
    • 1
  • Arthur Handtmann
    • 2
  • Matthias Weber
    • 1
  • Frank Schmid
    • 3
  1. 1.FMP Technology GmbHErlangenGermany
  2. 2.Arthur Handtmann Holding GmbH & Co. KGBiberachGermany
  3. 3.Geiger Fertigungstechnologie GmbHPretzfeldGermany

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