By applying electrostatic charge to the fuel from a fuel injector, electrostatic assistance of fuel injector sprays is one possible means of improving the atomization and fuel distribution in an engine. A gasoline injector was modified to induce electrostatic charge on the fuel spray and particle imaging velocimetry (PIV) measurements of the spray velocity field were performed. These results were complemented by high speed video of combustion of electrostatically charged ethanol blended gasoline droplets suspended from a capillary. Ethanol blended gasoline was selected as a fuel because of its widespread use in automotive gasoline engines. The experiment took place at room temperature and pressure and under normal gravity and a spark ignition system was utilized. Non-charged droplets were burned under otherwise identical conditions to compare to the combustion of the charged droplets, and images of the droplets prior to combustion were taken to provide a measure of droplet diameter. High speed video of the combustion of the droplets was recoded and the features of the flames were compared for the charged and noncharged droplets.
Experimental Investigation of Combustion of Electrostatically Charged Ethanol Blended Gasoline Droplets
CARLUCCI, Antonio Paolo;DE RISI, Arturo;
2007-01-01
Abstract
By applying electrostatic charge to the fuel from a fuel injector, electrostatic assistance of fuel injector sprays is one possible means of improving the atomization and fuel distribution in an engine. A gasoline injector was modified to induce electrostatic charge on the fuel spray and particle imaging velocimetry (PIV) measurements of the spray velocity field were performed. These results were complemented by high speed video of combustion of electrostatically charged ethanol blended gasoline droplets suspended from a capillary. Ethanol blended gasoline was selected as a fuel because of its widespread use in automotive gasoline engines. The experiment took place at room temperature and pressure and under normal gravity and a spark ignition system was utilized. Non-charged droplets were burned under otherwise identical conditions to compare to the combustion of the charged droplets, and images of the droplets prior to combustion were taken to provide a measure of droplet diameter. High speed video of the combustion of the droplets was recoded and the features of the flames were compared for the charged and noncharged droplets.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
