System, method, and apparatus for delivering highly atomized diesel exhaust fluid to an exhaust aftertreatment system

An apparatus, comprising:

• a housing including a pump to receive a diesel exhaust fluid (DEF);
• a cylindrical blend chamber in the housing, the blend chamber having two inlets and one outlet, wherein the outlet is adapted to be coupled to a transfer line that exits the housing, wherein a first inlet is adapted to be fluidly coupled to a DEF stream and receive the DEF stream from the pump, and wherein a second inlet is adapted to be fluidly coupled to an air stream downstream of the pump;
• a nozzle downstream of the transfer line, wherein the nozzle is configured to receive a blended DEF and air stream from the blend chamber via the transfer line;
• and
• wherein the second inlet comprises an orifice having a length of at least five (5) mm, and wherein the orifice and the first inlet enter the blending chamber at a divergent angle to form the blended DEF and air stream in the blend chamber.