Decomposition tube for an engine

Abstract

An exhaust conduit for a diesel engine is disclosed. The exhaust conduit may include a tubular body having a cylindrical side wall, and a plurality of plates arranged substantially parallel with one another and disposed within the tubular body. The exhaust conduit may further include a boss protruding from the side wall of the tubular body. The boss may include an opening configured to receive an injector device, wherein the plates and the boss are aligned such that a line extending along a central axis of the opening is substantially perpendicular to the plates.

What is claimed is: 
     
         1 . An exhaust conduit for a diesel engine, comprising:
 a tubular body having a cylindrical side wall;   a plurality of plates arranged substantially parallel with one another and disposed within the tubular body; and   a boss protruding from the side wall of the tubular body, wherein the boss includes an opening configured to receive an injector device,   wherein the plates and the boss are aligned such that a line extending along a central axis of the opening is substantially perpendicular to the plates.   
     
     
         2 . The exhaust conduit of  claim 1 , wherein the line is substantially parallel to a wall of the boss. 
     
     
         3 . The exhaust conduit of  claim 1 , wherein a distance between the central axis of the opening to a first edge of one of the plurality of plates is about 1.00 inch. 
     
     
         4 . The exhaust conduit of  claim 3 , wherein the one of plurality of plates is located closer to the boss than the other plates. 
     
     
         5 . The exhaust conduit of  claim 1 , wherein the tubular body comprises a first tubular body disposed within a second tubular body. 
     
     
         6 . The exhaust conduit of  claim 1 , wherein the tubular body includes a first end and a second end, the first end having a first diameter and the second end haying a second diameter greater than the first diameter. 
     
     
         7 . The exhaust conduit of  claim 6 , wherein the second diameter is about 4.12 inches or about 5.12 inches. 
     
     
         8 . The exhaust conduit of  claim 6 , wherein the first diameter is about 4 inches or about 5 inches. 
     
     
         9 . The exhaust conduit of  claim 6 , wherein the tubular body comprises a first tubular body disposed within a second tubular body, and wherein the first end is part of the first tubular body and the second end is part of the second tubular body. 
     
     
         10 . The exhaust conduit of  claim 3 , wherein a distance between the first edge and an edge of the tubular body is about 0.83 inches. 
     
     
         11 . The exhaust conduit of  claim 1 , wherein the alignment between the plates and the boss is fixed. 
     
     
         12 . The exhaust conduit of  claim 1 , wherein the tubular body, the plurality of plates, and the boss are integral with each other. 
     
     
         13 . An exhaust conduit for a diesel engine, comprising:
 a tubular body having an inlet with a first diameter, an outlet with a second diameter greater than the first diameter, and a cylindrical side wall;   a plurality of plates arranged substantially parallel with one another and disposed within the tubular body; and   a boss protruding from the side wall of the tubular body, wherein the boss includes an opening configured to receive an injector device,   wherein the plates and the boss are fixed to the tubular body and aligned such that a line extending along a central axis of the opening is substantially perpendicular to the plates.   
     
     
         14 . The exhaust conduit of  claim 13 , wherein a distance between the central axis of the opening to a first edge of one of the plurality of plates is about 1.00 inch. 
     
     
         15 . The exhaust conduit of  claim 14 , wherein a distance between the first edge and an edge of the tubular body is about 0.83 inches. 
     
     
         16 . The exhaust conduit of  claim 13 , wherein the second diameter is between about 4.12 inches and about 5.12 inches. 
     
     
         17 . The exhaust conduit of  claim 13 , wherein the tubular body, the plurality of plates, and the boss are integral with each other. 
     
     
         18 . An exhaust system for a diesel engine, comprising:
 a fuel injector; and   a decomposition tube connected to the fuel injector, wherein the decomposition tube is disposed upstream of a diesel oxidation catalyst and a diesel particulate filter, and wherein the decomposition tube comprises:
 a tubular body having a cylindrical side wall; 
 a plurality of plates arranged substantially parallel with one another and disposed within the tubular body; and 
 a boss protruding from the side wall of the tubular body, wherein the boss includes an opening configured to receive the feel injector, 
 wherein the plates and the boss are aligned such that a line extending along a central axis of the opening is substantially perpendicular to the plates. 
   
     
     
         19 . The exhaust system of  claim 18 , wherein the decomposition tube is configured to evaporate liquid fuel before the liquid fuel reaches the diesel oxidation catalyst. 
     
     
         20 . The exhaust system of  claim 18 , wherein the fuel injector is configured to inject fuel in a direction substantially perpendicular to the plates such that the fuel impinges on the plates.