In-Cylinder Spectroscopic Measurements of Combustion Process in a SI Engine Fuelled with Butanol-Gasoline Blend 2013-01-1318
In-cylinder optical diagnostic was applied to study
butanol-gasoline blend combustion in a SI engine. Spark timing and
fuel injection mode were changed to work in normal and knocking
conditions. The experiments were realized in a single-cylinder
ported fuel injection SI engine with an external boosting device.
The engine worked like-stoichiometric mixture at 2000 rpm, medium
boosting and wide open throttle.
UV-visible natural emission spectroscopy allowed to follow the
formation and the evolution of the main compounds and radical
species that characterize the combustion process from the spark
ignition until the exhaust. Particular interest was devoted to OH
and CO₂* evolution, and to the spectral evidence of soot precursors
due to fuel deposits burning. OH resulted the best marker for
combustion both in normal and abnormal conditions.
Citation: Tornatore, C., Merola, S., Valentino, G., and Marchitto, L., "In-Cylinder Spectroscopic Measurements of Combustion Process in a SI Engine Fuelled with Butanol-Gasoline Blend," SAE Technical Paper 2013-01-1318, 2013, https://doi.org/10.4271/2013-01-1318. Download Citation