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Multiphase Phenomena in Diesel Fuel Injection Systems

  • Ioannis K. KarathanassisEmail author
  • Foivos (Phoevos) Koukouvinis
  • Manolis Gavaises
Chapter
Part of the Energy, Environment, and Sustainability book series (ENENSU)

Abstract

Fuel Injection Equipment (FIE) are an integral component of modern Internal Combustion Engines (ICE), since they play a crucial role in the fuel atomization process and in the formation of a fuel/air combustible mixture, consequently affecting efficiency and pollutant formation. Advancements and improvements of FIE systems are determined by the complexity of the physical mechanisms taking place; the spatial scales are in the order of millimetres, flow may become locally highly supersonic, leading to very small temporal scales of microseconds or less. The operation of these devices is highly unsteady, involving moving geometries such as needle valves. Additionally, extreme pressure changes imply that many assumptions of traditional fluid mechanics, such as incompressibility, are no longer valid. Furthermore, the description of the fuel properties becomes an issue, since fuel databases are scarce or limited to pure components, whereas actual fuels are commonly hydrocarbon mixtures. Last but not least, complicated phenomena such as phase change or transition from subcritical to transcritical/supercritical state of matter further pose complications in the understanding of the operation of these devices.

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Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Ioannis K. Karathanassis
    • 1
    Email author
  • Foivos (Phoevos) Koukouvinis
    • 1
  • Manolis Gavaises
    • 1
  1. 1.School of Mathematics, Computer Science & Engineering, Northampton SquareCity, University of LondonLondonUK

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