# US 10,767,537 B1 · Hydrocarbon injector deflector assembly for diesel exhaust system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,767,537 B1 - Document ID: US10767537B1 - Status: Granted - Kind: B1 - Application number: 16/456,973 - Filed: 2019-06-28 - Granted: 2020-09-08 - Earliest claimed: 2019-06-28 - Assignees: GM Global Technology Operations LLC - Applicants: GM Global Technology Operations LLC - Inventors: Jianwen Li; Shrikant N. Mathad; Ping Xiang - Web page: https://patentgrep.com/patent/US10767537B1 ## CPC - F01N 3/2892: {Exhaust flow directors or the like, e.g. upstream of catalytic device} - F01N 3/0253: {adding fuel to exhaust gases} - F02D 41/029: {the exhaust gas treating apparatus being a particulate filter} - F02D 41/1459: {the characteristics being a hydrocarbon content or concentration} - F02D 41/3094: {the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder} - F02D 41/3827: {for diesel engines} - F01N 3/103: {Oxidation catalysts for HC and CO only} - F01N 3/2882: {Catalytic reactors combined or associated with other devices, e.g. exhaust silencers or other exhaust purification devices (combined with absorbents or adsorbents only F01N3/0814; combined with particulate filters F01N3/035)} - F01N 2240/20: a flow director or deflector - F01N 2610/03: the substance being hydrocarbons, e.g. engine fuel - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) ## Abstract A hydrocarbon injector deflector for a diesel exhaust system includes a base plate having a first end linearly extending to a second end to define a first side and a second side. The base plate is arcuately formed such that the first side extends arcuately to the second side. The first end is disposed upstream of the exhaust system relative to the second end. The hydrocarbon deflector further includes a frame connected to the second end of the base plate and extends therefrom at a first angle. The frame has an opening formed through the frame. The opening defines an outer wall having an inner side of the frame. The deflector further includes a tab extending from the inner side at a second angle. ## Claims ### Claim 1 A hydrocarbon injector deflector for a diesel exhaust system, the hydrocarbon injector deflector comprising: a base plate having a first end linearly extending to a second end to define a first side and a second side, the base plate being arcuately formed such that the first side extends arcuately to the second side, the first end being disposed upstream of the exhaust system relative to the second end; a frame connected to the second end of the base plate and extending therefrom at a first angle, the frame having an opening formed therethrough, the opening defining an outer wall having an inner side of the frame; and a tab extending from the inner side at a second angle. ### Claim 2 (depends on 1) The hydrocarbon injector deflector of claim 1 wherein the base plate comprises at least one slit formed therethrough, defining a wing for hydrocarbon droplet impingement. ### Claim 3 (depends on 2) The hydrocarbon injector deflector of claim 2 wherein the at least one slit is a pair of slits formed laterally between the first and second sides to define a pair of wings arcuately extending adjacent the second end of the base plate. ### Claim 4 (depends on 1) The hydrocarbon injector deflector of claim 1 wherein the frame includes a first portion and a second portion, the first portion having a neck extending therefrom and disposed on the second end of the base plate, the second portion having at least one contact portion extending therefrom for mounting the deflector. ### Claim 5 (depends on 4) The hydrocarbon injector deflector of claim 4 wherein the outer wall of the frame includes at least one cut formed thereon from the first portion to a length adjacent the second portion, defining a strip extending from the second portion at a third angle. ### Claim 6 (depends on 5) The hydrocarbon injector deflector of claim 5 wherein the at least one cut is a pair of cuts formed on the outer wall to define a pair of strips extending from the second portion of the frame at the third angle. ### Claim 7 A hydrocarbon injector deflector assembly for a diesel exhaust system of a vehicle having an exhaust flow, the assembly comprising: an exhaust column; a hydrocarbon injector disposed to and in fluid communication with the exhaust column, the hydrocarbon injector configured to introduce hydrocarbons to be mixed with the exhaust flow; a mixer disposed within the exhaust column downstream from the hydrocarbon injector, the mixer configured to mix hydrocarbon and exhaust flow and distribute them uniformly; and a diesel particulate filter disposed downstream from the mixer, the diesel particulate filter being connect to and in fluid communication with the exhaust column; a hydrocarbon injector deflector comprising: a base plate disposed in the exhaust column between the hydrocarbon injector and the mixer, the base plate having a first end linearly extending to a second end to define a first side and a second side, the base plate being arcuately formed such that the first side extends arcuately to the second side, the base plate being disposed adjacent the hydrocarbon injector, the first end being disposed upstream relative to the second end; a frame connected to the second end of the base plate and extending therefrom at a first angle, the frame having an opening formed therethrough, the window defining an outer wall having an inner side of the frame; and a tab extending from the inner side of the frame at a second angle. ### Claim 8 (depends on 7) The hydrocarbon injector deflector assembly of claim 7 wherein the base plate comprises at least one slit formed there through, defining a wing for hydrocarbon droplet impingement. ### Claim 9 (depends on 8) The hydrocarbon injector deflector assembly of claim 8 wherein the at least one slit is a pair of grooves formed laterally between the first and second sides to define a pair of wings arcuately extending adjacent the second end of the base plate. ### Claim 10 (depends on 7) The hydrocarbon injector deflector assembly of claim 7 wherein the frame includes a first portion and a second portion, the first portion having a neck extending therefrom and disposed on the second end of the base plate, the second portion having at least one contact portion extending therefrom for mounting the deflector. ### Claim 11 (depends on 10) The hydrocarbon injector deflector assembly of claim 10 wherein the outer wall of the frame includes at least one cut formed thereon from the first portion to a length adjacent the second portion, defining a strip extending from the second portion at a third angle. ### Claim 12 (depends on 11) The hydrocarbon injector deflector assembly of claim 11 wherein the at least one cut is a pair of cuts formed on the outer wall to define a pair of strips extending from the second portion of the frame at the third angle. ### Claim 13 (depends on 7) The hydrocarbon injector deflector assembly of claim 7 wherein the frame is connected to the second end of the base plate and extends downstream therefrom at the first angle, the first angle being between about 10 to about 15 degrees relative to a cross-section normal to the exhaust column for hydrocarbon droplet impingement and redistribution at low to medium exhaust flow. ### Claim 14 (depends on 7) The hydrocarbon injector deflector assembly of claim 7 wherein the tab extends downstream from the inner side of the frame at the second angle, the second angle being between about 25 degrees and about 45 degrees relative to a cross-section normal to the exhaust column for hydrocarbon droplet impingement and redistribution at high exhaust flow. ### Claim 15 A vehicle having a diesel exhaust system with a hydrocarbon injector deflector assembly for exhaust flow, the vehicle comprising: a chassis; a body supported by the chassis, the body including a motor compartment and an occupant zone; and a diesel exhaust system comprising: an exhaust column; a hydrocarbon injector disposed to and in fluid communication with the exhaust column, the hydrocarbon injector configured to introduce hydrocarbons to be mixed with the exhaust flow; a mixer disposed within the exhaust column downstream from the hydrocarbon injector, the mixer configured to distribute exhaust flow; and a diesel oxidation catalyst and a diesel particulate filter disposed downstream from the mixer, the diesel oxidation catalyst and diesel particulate filter being connect to and in fluid communication with the exhaust column; a hydrocarbon injector deflector comprising: a base plate disposed in the exhaust column between the hydrocarbon injector and the mixer, the base plate having a first end linearly extending to a second end to define a first side and a second side, the base plate being arcuately formed such that the first side extends arcuately to the second side, the base plate being disposed adjacent the hydrocarbon injector, the first end being disposed upstream relative to the second end; a frame connected to the second end of the base plate and extending therefrom at a first angle, the frame having an opening formed therethrough, the window defining an outer wall having an inner side of the frame; and a tab extending from the inner side of the frame at a second angle. ### Claim 16 (depends on 15) The vehicle of claim 15 wherein the base plate comprises at least one slit formed therethrough, defining a wing for hydrocarbon droplet impingement. ### Claim 17 (depends on 15) The vehicle of claim 15 wherein the frame includes a first portion and a second portion, the first portion having a neck extending therefrom and disposed on the second end of the base plate, the second portion having at least one contact portion extending therefrom for mounting the deflector to the exhaust column. ### Claim 18 (depends on 17) The vehicle of claim 17 wherein the outer wall of the frame includes at least one cut formed thereon from the first portion to a length adjacent the second portion, defining a strip extending from the second portion at a third angle. ### Claim 19 (depends on 15) The vehicle of claim 15 wherein the frame is connected to the second end of the base plate and extends downstream therefrom at the first angle, the first angle being between about 10 to about 15 degrees relative to a cross-section normal to the exhaust column for hydrocarbon droplet impingement and redistribution at low to medium exhaust flow. ### Claim 20 (depends on 15) The vehicle of claim 15 wherein the tab extends downstream from the inner side of the frame at the second angle, the second angle being between about 25 degrees and about 45 degrees relative to a cross-section normal to the exhaust column for hydrocarbon droplet impingement and redistribution at high exhaust flow.