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A New Approach of Planar Laser Induced Fluorescence Applied to Fuel/Air Ratio Measurement in the Compression Stroke of an Optical S.I. Engine
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Abstract
The aim of this work is to provide a new tool for quantitative measurements of the fuel/air ratio in the combustion chamber of a spark ignition engine. This optical method is based on a new approach of Planar Laser Induced Fluorescence, taking advantage of the quenching phenomenon. A broadband KrF excimer laser (248 nm) induces the fluorescence of toluene to visualize the fuel/air distribution. At first, we made a spectroscopic study of the mixture iso-octane toluene in a cell. At last, in an SI engine equipped with optical access, instantaneous imaging of the fuel/air ratio was performed inside the cylinder during the compression stroke.
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Citation
Reboux, J., Puechberty, D., and Dionnet, F., "A New Approach of Planar Laser Induced Fluorescence Applied to Fuel/Air Ratio Measurement in the Compression Stroke of an Optical S.I. Engine," SAE Technical Paper 941988, 1994, https://doi.org/10.4271/941988.Also In
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