Patent ID: 7032702

Claim:
A rear covering part of a motor vehicle having a tail pipe orifice fastened to said rear covering part for an exhaust system of said motor vehicle, having a bordered passage opening for the tail pipe orifice, the tail pipe orifice comprising an air inlet section including an inlet opening which communicates in a non-contacting manner with a tail pipe of the exhaust system and extends over the tail pipe, said inlet opening situated at a radial distance from said tail pipe, whereby heat transfer is minimized between said tail pipe and said tail pipe orifice, an outlet opening situated downstream with respect to the inlet opening, a transition section situated between the inlet opening and the outlet opening and tapering in its cross-section, and an interior cross-section of the inlet opening which is larger than the exterior cross-section of the tail pipe, wherein a passage cross-section along the entire length of the tail pipe orifice is larger than an exterior cross-section of the tail pipe of the exhaust system; wherein the tail pipe orifice is constructed as a double-walled pipe with a jacket for air can flow; and wherein the tail pipe orifice is fastened by several strip-shaped fastening lugs originating from an exterior pipe wall of the double-walled pipe to the rear covering part, by way of a fastening frame.