What type of hydraulic injector nozzle only has one hole and creates a cone-shaped spray pattern?

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A pintle nozzle is designed with a single hole that allows for the creation of a cone-shaped spray pattern. This type of nozzle is exemplary for applications that require a well-defined spray pattern, providing efficient atomization of fuel or liquid. The single orifice structure enables the atomized liquid to exit from the nozzle in a conical shape, which is beneficial in various hydraulic systems to achieve better mixing of air and fuel.

In contrast, multi-hole nozzles function with several orifices to produce a more dispersed spray, leading to different spray patterns. Disc nozzles utilize a different design that often focuses on delivering a flat spray pattern rather than a conical one. Swirl nozzles, on the other hand, induce a swirling motion in the liquid, producing a distinctly different spray pattern that is not cone-shaped.

The pintle nozzle's unique design makes it particularly suited for specific applications where precision in spray shape and distribution is critical.