Emissions system mounting device with reductant mixing

Abstract

An emissions control system is disclosed. The emissions control system may have a first exhaust treatment device. The emissions control system may also have an end cap defining a mixing chamber connected to an end of the first exhaust treatment device. The mixing chamber may be configured to promote mixing between a flow of exhaust received from the first exhaust treatment device and a reductant. The emissions control system may further have a second exhaust treatment device configured to receive the flow of exhaust and reductant after it passes through the mixing chamber.

1 . An emissions control system, comprising:
 a first exhaust treatment device;   an end cap defining a mixing chamber connected to an end of the first exhaust treatment device, the mixing chamber being configured to promote mixing between a flow of exhaust received from the first exhaust treatment device and a reductant; and   a second exhaust treatment device configured to receive the flow of exhaust and reductant after it passes through the mixing chamber.   
   
   
       2 . The emissions control system of  claim 1 , wherein the end cap further includes a tumble flow generator situated between the first exhaust treatment device and the mixing chamber. 
   
   
       3 . The emissions control system of  claim 2 , wherein the tumble flow generator includes a plurality of flow deflectors, each flow deflector being angled at between 30 and 75 degrees. 
   
   
       4 . The emissions control system of  claim 2 , further including an injector located in the end cap, the injector being configured to inject the reductant. 
   
   
       5 . The emissions control system of  claim 1 , further including a mixing conduit, the mixing conduit, the first exhaust treatment device, and the second exhaust treatment device being fluidly communicated via one or more connectors, the one or more connectors connecting the first exhaust treatment device, the second exhaust treatment device, and the mixing conduit in a side-by-side orientation, the mixing conduit including a static mixer. 
   
   
       6 . The emissions control system of  claim 1 , wherein the end cap is a double end cap, a first end of the double end cap connecting to the first exhaust treatment device and a second end of the double end cap connecting to the second exhaust treatment device, the double end cap including a tumble mixer. 
   
   
       7 . The emissions control system of  claim 1 , wherein the first exhaust treatment device is a particulate filter and the second exhaust treatment device is at least one of a selective catalytic reduction device or a lean NOx trap. 
   
   
       8 . The emissions control system of  claim 1 , further including:
 a first bracket; and   a second bracket coupled to the first bracket, wherein the first exhaust treatment device and the second exhaust treatment device are supported by the first and second brackets.   
   
   
       9 . An emissions control system, comprising:
 a first bracket;   a second bracket coupled to the first bracket;   a first exhaust treatment device supported by the first bracket and the second bracket;   a second exhaust treatment device supported by the first bracket and the second bracket; and   a conduit having a static mixer, the conduit being supported by the first bracket and the second bracket, wherein the conduit, the first exhaust treatment device, and the second exhaust treatment device are fluidly communicated via one or more connectors, the one or more connectors connecting the first exhaust treatment device, the second exhaust treatment device, and the conduit in a side-by-side orientation.   
   
   
       10 . The emissions control system of  claim 9 , wherein the static mixer includes at least one of a mixing plate, baffles, or vanes. 
   
   
       11 . The emissions control system of  claim 9 , further including an end cap with a mixing chamber, the end cap being coupled to the first exhaust treatment device. 
   
   
       12 . The emissions control system of  claim 11 , wherein the end cap further includes a tumble flow generator situated between the first exhaust treatment device and the mixing chamber. 
   
   
       13 . The emissions control system of  claim 12 , wherein the tumble flow generator includes a plurality of flow deflectors, each flow deflector being angled at between 30 and 75 degrees. 
   
   
       14 . The emissions control system of  claim 11 , further including an injector located in the end cap, the injector being configured to inject a reductant. 
   
   
       15 . The emissions control system of  claim 9 , further including
 a connector configured to fluidly communicate the first exhaust treatment device with the conduit; and   an injector located in the connector, the injector being configured to inject reductant.   
   
   
       16 . The emissions control system of  claim 15 , wherein the connector embodies elbow-type or cobra-head connectors. 
   
   
       17 . The emissions control system of  claim 15 , wherein the injector is configured to inject along an axis of the conduit. 
   
   
       18 . The emissions control system of  claim 15 , wherein the first exhaust treatment device is a particulate filter and the second exhaust treatment device at least one of a selective catalytic reduction device or a lean NOx trap. 
   
   
       19 . An emissions control system, comprising:
 a mount;   a diesel particulate filter supported by the mount;   at least one of a lean NOx trap or a selective catalytic reduction device supported by the mount;   an end cap defining a mixing chamber connected to an end of the diesel particulate filter, the mixing chamber being configured to receive a flow of exhaust from the diesel particulate filter and an injected reductant.   
   
   
       20 . The emissions control system of  claim 19 , wherein the end cap further includes a tumble flow generator situated between the first exhaust treatment device and the mixing chamber.