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

摘要

A system includes a cylindrical blend chamber having two inlets and one outlet. The outlet is fluidly coupled to a transfer line, and a nozzle is positioned downstream of the transfer line. The nozzle is fluidly coupled to an exhaust stream of an internal combustion engine. The system further includes a first inlet fluidly coupled to a diesel exhaust fluid (DEF) stream, and a second inlet fluidly coupled to an air stream. The DEF stream and the air stream intersect at a divergent angle.

主权项

1. A system, comprising:
a housing including a pump; a cylindrical blend chamber in the housing, the blend chamber having two inlets and one outlet, wherein the outlet is fluidly coupled to a transfer line, wherein a first inlet is fluidly coupled to a diesel exhaust fluid (DEF) stream and receives the DEF stream from the pump, and wherein the second inlet is fluidly coupled to an air stream downstream of the pump; wherein the DEF stream and the air stream intersect at a divergent angle and form a blended DEF and air stream that is provided from the blending chamber to the transfer line; and a nozzle downstream of the transfer line, wherein the nozzle is fluidly coupled to an exhaust stream of an internal combustion engine and the nozzle delivers the blended DEF and air stream into the exhaust stream.