CONVERGING LIQUID REDUCTANT INJECTOR NOZZLE IN SELECTIVE CATALYTIC REDUCTION SYSTEMS

摘要

A liquid reductant injector nozzle includes a first portion defining a hollow cylindrical static chamber, in fluid communication with second portion defining a hollow frustoconical converging section, which is in turn in fluid communication with a sharp edged type discharge orifice. The hollow cylindrical static chamber is in reductant receiving communication with a reductant source, and has a first and second circular opening having equal diameters. The second circular opening is downstream of the first circular opening. The hollow frustoconical converging section is in reductant receiving communication with the hollow cylindrical static chamber via the second circular opening. Reductant received from the reductant source is discharged through the discharge orifice. A sidewall of the hollow cylindrical static chamber and a frustum side of the frustoconical converging section define an angle of convergence of the liquid reductant injector nozzle relative to a plane of the second circular opening.

主权项

1. A liquid reductant injector nozzle, comprising:
a first portion defining a hollow cylindrical static chamber in reductant receiving communication with a reductant source, the first portion defining a first opening of the hollow cylindrical static chamber and a second opening of the hollow cylindrical static chamber, the second opening downstream of the first opening; and a second portion defining a hollow frustoconical converging section in fluid communication with the hollow cylindrical static chamber and a discharge orifice to discharge reductant received from the reductant source, the hollow frustoconical converging section in reductant receiving communication with the hollow cylindrical static chamber via the second opening; wherein a sidewall of the hollow cylindrical static chamber and a frustum side of the frustoconical converging section define an angle of convergence of the liquid reductant injector nozzle relative to a plane of the second opening.