Simultaneous Fuel Liquid and Vapour Measurements in a DI Gasoline Engine By Laser Induced Exciplex F
Researchers: B. Leach, Dr. Y. Li
Supervisors: Prof. H. Zhao, Dr. T. Ma, Prof. N. Ladommatos
Sponsors: EPSRC, Orbital Engines Pty Ltd.
LIEF Principle
A fluorescence molecule in an excited state Np* reacts with another molecule DMA to form a second fluorescent species (Np+DMA)*. Np* emits dominantly in the vapour phase, (Np+DMA)* in the liquid phase emits at a longer wavelength.
Exciplex formation and the resulting fluorescence spectra of Napthalene (7%) and DMA (7%) in 86% Iso-octane.
Experimental Set-up
Results
63°CA BTDC Compression Stroke (7°CA ASOI)
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Liquid Phase |
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Vapour Phase |
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46°CA BTDC Compression Stroke (24°CA ASOI)
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Vapour Phase |
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34°CA BTDC Compression Stroke (36°CA ASOI)
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Laser from... |
LHS |
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Average |
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Liquid Phase |
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Vapour Phase |
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