MIXING DEVICE FOR MIXING OF UREA AND AIR, ENGINE COMPRISING MIXING DEVICE AND TRANSPORT VEHICLE Russian patent published in 2009 - IPC F01N3/20 

FIELD: engines and pumps.

SUBSTANCE: Mixing device preferably comprises inlet urea channel and inlet gas channel for supply of accordingly urea and gas into mixing chamber of mixing device and outlet channel for discharge of urea and gas mixture from mixing chamber, at that these inlet channels and outlet channel may preferably be extended to the side of flow and preferably pass into mixing chamber, and outlet channel preferably starts from mixing chamber. Device comprises valve in inlet channel that provides for removal of crystals on channel surfaces, at that valve is arranged with the possibility to execute reciprocal motion. Valve comprises piston with spring facility and flat element with opening.

EFFECT: such arrangement reduces deposit of urea crystals on surfaces of inlet channel.

22 cl, 16 dwg