SCR post-processing silencer assembly

The utility model provides an SCR post-processing silencer assembly which comprises a silencer shell body and an SCR post-processor. An air inlet pipe and an air outlet pipe are arranged on the end portion of the silencer shell body, an air guide cover is fixedly arranged inside the silencer shell body through a separation board, an inlet end of the air guide cover is communicated with the air inlet pipe, the inlet section of the air guide cover is of a cone shape, the air guide cover gradually increases along the forwarding direction of air, the SCR post-processor is located between the cone-shaped inlet section and an outlet end of the air guide cover, the maximum diameter of the air guide cover is smaller than the diameter of the silencer shell body, and the length of the air guide cover is smaller than the length of the silencer shell body. the assembly is simple and compact in structure, good in silencing effect, convenient to use, practical, light in weight, easy to manufacture, and low in cost, and is transversely arranged on a finished vehicle, the occupied longitudinal space is few, and the arrangement of a short wheelbase vehicle type is benefited.