Pulsed spraybar injector

A spray bar injector comprising:

• a spray bar defining a longitudinal axis and including a fluid inlet and a plurality of spray outlet orifices spaced apart longitudinally in a direction along the longitudinal axis;
• a spray valve operatively connected to each spray outlet orifice, wherein each spray valve includes a check element seated in a valve seat;
• a master valve in fluid communication with the fluid inlet, operatively connected to:
• divert flow from the fluid inlet into a first passage and block flow into a second passage in a first position to open the spray valves and issue a spray from the spray outlet orifices;
• and
• divert flow from the fluid inlet into the second passage and block flow into the first passage in a second position to close the spray valves and block issue of spray from the spray outlet orifices, wherein each spray valve includes a spin chamber upstream of the respective spray orifice with an opposed pair of tangentially directed inlets, for fluid communication from the first passage tangentially, in a direction around the respective spray outlet orifice, into the spin chamber to induce spin around each respective spay outlet orifice on fluid issuing from the respective spray outlet orifice, wherein the opposed pair of tangentially directed inlets and the spin chamber are defined in an outer surface of an inner body, and wherein the spray outlet orifices are defined in a sleeve sealed against the inner body.