Effect of the In-Cylinder Back Pressure on the Injection Process and Fuel Flow Characteristics in a Common-Rail Diesel Injector Using GTL Fuel

The presented paper aims to study the influence of mineral diesel fuel and synthetic Gas-To-Liquid (GTL) on injection process, flow conditions, cavitation formation in a modern common-rail injector. First, characteristics was studied experimentally using an system test bench, numerically one-dimensional computational program. Afterward, properties internal inside injector considered as multiphase calculated through unsteady Computational Fluid Dynamics simulations Eulerian–Eulerian two-fluid approach. Finally, in-cylinder back pressure nozzle at three distinctive pressures. obtained numerical results for show good agreement with experimental ones. 3D indicate that differences inception. location is same both fuels. triggered regardless properties. size area influenced by also from pressure. Higher values induce smaller areas vice versa. Comparing conditions hole exit, proved slightly higher average mass rate velocities, which can be attributed fluid densities viscosities. Overall, when considering process flow, GTL used systems solenoid injectors.