Patent ID: 8312961
Filing Date: 2012-11-20
Classification: F01N

Abstract:
1. A soot preventing type tail trim, comprising: a tail pipe discharging exhaust gas; and a body enclosing an outer circumference of the tail pipe with a predetermined space therebetween, such that wind is allowed to flow into the predetermined space and to be discharged therefrom to generate a separation layer in the exhaust gas passing the tail pipe by the wind; a wind inlet formed between an end portion of the body and the outer circumference of the tail pipe and having at least one or more openings to allow the wind to flow therethrough inside the predetermined space, wherein the wind inlet includes a diameter-reducing surface bent toward the other end of the body and the at least one or more openings are formed to the diameter-reducing surface; the body formed of a hollow pipe having the predetermined space therein, wherein an external finishing portion is formed to the other end of the body and connected to a distal end portion of the tail pipe; and at least a slot formed through the tail pipe at the distal end portion of the tail pipe, wherein an inner diameter of the tail pipe at the distal end portion thereof is larger than a diameter at a proximate end thereof disposed near to the wind inlet.