A detailed mathematical model of a direct-acting prototypal piezo-injector has been developed to help experimentation, design and component optimization. The thermo-fluid dynamics of the hydraulic circuit components, including the injector feeding pipe, injector drilled pipes and nozzle, was...

An innovative hydraulic layout for high-pressure fuel injection systems has been developed. The rail has been removed from the high-pressure circuit of standard Common Rail injection apparatus in order to have: reduced production costs, easy installation on the engine and a fast dynamic response...

The prediction capability of an advanced Common Rail (CR) piezoelectric injection-system mathematical model has been upgraded and applied to the analysis of transient flows inside injectors. The predicted time histories of the sac-, delivery- and control-chamber pressures, of the pilot- and...