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Transient Plasma Ignition (TPI) for Automotive Applications

Biswas, Sayan; Ekoto, Isaac; Scarcelli, Riccardo

Abstract:
Transient plasma ignition (TPI) – where high-energy, non-equilibrium plasma ignites flammable mixtures – has been found to promote faster flame propagation rates through a combination of larger volume ignition kernels and the generation of active radicals that enhance flame speeds. For the present study, ignition and early flame propagation characteristics of TPI were investigated within a custom-built optically accessible spark calorimeter for near-atmospheric stoichiometric mixtures of propane and air. Transient plasma was generated using an available high-voltage (~ 25 kV peak), short duration (~12 nanosecond) pulse generator. Two electrode configurations were investigated: (1) a wide-gap pin-to-pin and (2) a groundless partial dielectric barrier discharge (DBD) igniter with a flush mounted and exposed anode tip. Each electrode was expected to promote faster initial burn rates through some combination of reduced heat transfer losses, formation of radical species favorable for ignition, and distributed ignition sites within the combustion chamber. Important post-discharge products were bulk-sampled from non-flammable fuel/air mixtures and speciated via gas chromatography. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000088601
Veröffentlicht am 08.06.2019
Coverbild
Zugehörige Institution(en) am KIT Institut für Kolbenmaschinen (IFKM)
Publikationstyp Proceedingsbeitrag
Jahr 2018
Sprache Englisch
Identifikator ISBN: 978-3-8169-3449-3
urn:nbn:de:swb:90-886014
KITopen-ID: 1000088601
Erschienen in Ignition Systems for Gasoline Engines : 4th International Conference, December 6 - 7, 2018, Berlin, Germany. Ed.: M. Günther
Verlag expert Verlag, Tübingen
Seiten 311-328
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