Mixing assembly for an after treatment unit of an exhaust system of a vehicle

A mixing assembly for an aftertreatment unit of an exhaust system of a vehicle, the mixing assembly comprising:

• a swirl component with a doser opening on a top surface of the swirl component for ingress of a reductant fluid, the swirl component extending around an axis, the swirl component comprising:
• a frustoconical portion comprising a curved flange extending circumferentially along a side surface of the swirl component for guiding a portion of an exhaust flow inside the swirl component, the frustoconical portion having a first end and a second end, wherein a diameter of the second end is greater than a diameter of the first end, and
• a cylindrical portion contiguous with the second end, wherein a length of the cylindrical portion along the axis is less than a length of the frustoconical portion along the axis;
• and
• a bowl extending from a bottom surface of the cylindrical portion, the bowl extending around the axis, wherein a length of the bowl along the axis is less than the length of the frustoconical portion along the axis.