A laser induced fluorescence (LIF) technique to visualize the gasoline distribution in port injection spark ignition engines is presented. A dopant is selected according to a list of criteria required to make it a good tracer of the gasoline. This dopant, biacetyl, is shown to provide quantitative measurement in relative value. The LIF technique is applied for two-dimensional laser sheet imaging in a model engine with optical access. Extensive data processing is developped and used for a quantitative characterization of the mixing level. The effect of compression, injection timing, engine speed, and type of flow field on the mixture homogeneity is investigated.
Gasoline Distribution Measurements with PLIF in a SI Engine
Sae Technical Papers
International Fuels & Lubricants Meeting & Exposition ; 1992
01.10.1992
Aufsatz (Konferenz)
Englisch
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