Experimental and numerical analysis of a high-pressure outwardly opening hollow cone spray injector for automotive engines

摘要

The manuscript describes the characterization of a novel outwardly opening pintle-type injector, characterized by a Hollow Cone Nozzle (HCN), as a possible solution for ultra-low emission high-efficiency DI diesel and GDICI engines. In its prototypal version, the injector is capable of generating the hollow cone spray at relatively high injection pressure with a very precise fuel metering.