COMBINED FOCUSED SHADOW AND COMPUTERIZED TOMOGRAPHIC ANALYSIS OF A SPRAY IMPINGING ON A FLAT END OF A ROUND STICK

Relatively novel combustion chamber geometries, whose designs generally include a piston with a bowl and a small projection in the middle of the bowl for direct injection stratified charge (DISC) and diesel engines, have been suggested by Tanasawa et al. and, recently, by Kato and Onishi. The basic geometry exhibits a raised surface at or near the center of the piston bowl, onto which some or all of the fuel spray impacts. The liquid which impacts the raised surface is expected to provide a centrally located cloud of fuel drops and fuel vapor which will enhance the subsequent combustion event.