A New Approach of Planar Laser Induced Fluorescence Applied to Fuel/Air Ratio Measurement in the Compression Stroke of an Optical S.I. Engine 941988
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.
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. Download Citation
J. Reboux, D. Puechberty, F. Dionnet
International Fuels & Lubricants Meeting & Exposition
SAE 1994 Transactions: Journal of Fuels and Lubricants-V103-4