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Atomization and Sprays
Facteur d'impact: 1.189 Facteur d'impact sur 5 ans: 1.596 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v7.i1.30
pages 43-75

METHODS AND TOOLS FOR ADVANCED FUEL SPRAY PRODUCTION AND INVESTIGATION

Günter Brenn
Institute of Fluid Mechanics and Heat Transfer Graz University of Technology Rechbauerstraße 12, Graz 8010, Austria
Franz Durst
FMP TECHNOLOGY GMBH, Am Weichselgarten 34, 91058 Erlangen, Germany
Dimosthenis Trimis
Institute of Thermal Engineering, Technische Universitat Bergakademie Freiberg, Gustav-Zeuner-Strasse 7, D-09596 Freiberg, Germany; Engler-Bunte-Institute Division of Combustion Technology, Karlsruhe Institute of Technology, Engler-Bunte-Ring 1, D-76131
M. Weclas
LSTM Erlangen, Lehrstuhl für Strömungsmechanik, Universitat Erlangen-Nürnberg, D-91058 Erlangen, Germany

RÉSUMÉ

Advancements in fuel spray injection systems for internal combustion engines and other fuel combusting systems require new tools and methods to produce sprays, to study their properties, and to quantify details such as local droplet size, droplet velocities, droplet concentration, and droplet temperature. Direct quantities, on which spray formation depends, need to be measured, rather than quantities on which an indirect dependence exists.
At the Institute of Fluid Mechanics of the University of Erlangen-Nurnberg, research and development work has been carried out on spray systems, yielding new methods, tools, and instruments to produce and study sprays. A summary of this work is given in this article, providing information on:

    A new method to measure the instantaneous flow rate through the supply line of an intermittently operating fuel injector
    An innovative method to produce sprays of controlled sized distribution using vibrational excitation to support the spray formation
    An optical system to measure the velocity of the spray-producing jet or spray-producing film and the wavelengths of the instability waves that cause the disintegration
    A simple test facility to study the overall performance of multihole injection nozzles
    A phase-Doppler system suitable to provide droplet data correctly, including droplet concentration and droplet temperature
In this article, the development work is summarized and applications of the measuring techniques are demonstrated. Demonstrations of the developments mentioned above are also provided, and applications to multihole injection systems permitting controlled production of sprays are described.


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