WO2012099667A2 - Miniature regeneration unit - Google Patents
Miniature regeneration unit Download PDFInfo
- Publication number
- WO2012099667A2 WO2012099667A2 PCT/US2011/065770 US2011065770W WO2012099667A2 WO 2012099667 A2 WO2012099667 A2 WO 2012099667A2 US 2011065770 W US2011065770 W US 2011065770W WO 2012099667 A2 WO2012099667 A2 WO 2012099667A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- regeneration unit
- exhaust
- housing
- fuel
- side branch
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
- F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
- F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
- F23J15/025—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow using filters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/14—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a fuel burner
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/12—Other sensor principles, e.g. using electro conductivity of substrate or radio frequency
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the present disclosure generally relates to a system for treating exhaust gases. More particularly, a miniature regeneration unit for increasing an exhaust gas temperature is discussed.
- Typical aftertreatment systems for diesel engine exhaust may include one or more of a diesel particulate filter (DPF), a selective catalytic reduction (SCR) system, a hydrocarbon (HC) injector, and a diesel oxidation catalyst (DOC).
- DPF diesel particulate filter
- SCR selective catalytic reduction
- HC hydrocarbon
- DOC diesel oxidation catalyst
- the DPF traps soot emitted by the engine and reduces the emission of particulate matter (PM). Over time, the DPF becomes loaded and begins to clog. Periodic regeneration or oxidation of the trapped soot in the DPF is required for proper operation. To regenerate the DPF, relatively high exhaust temperatures in combination with an ample amount of oxygen in the exhaust stream are needed to oxidize the soot trapped in the filter.
- the DOC is typically used to generate heat to regenerate the soot loaded DPF.
- hydrocarbons HC
- the HC will oxidize. This reaction is highly exothermic and the exhaust gases are heated during light-off. The heated exhaust gases are used to regenerate the DPF.
- a burner may be provided to heat the exhaust stream upstream of the various aftertreatment devices.
- Known burners have successfully increased the exhaust temperature of internal combustion engines for automotive use.
- Some Original Equipment Manufacturers have resisted implementation of prior burners due to their size and cost.
- other applications including diesel locomotives, stationary power plants, marine vessels and others may be equipped with relatively large diesel compression engines.
- the exhaust mass flow rate from the larger engines may be more than ten times the maximum flow rate typically provided to the burner.
- a system for controlling the temperature of an exhaust stream from an engine at a location upstream from an exhaust aftertreatment apparatus includes a main exhaust passageway adapted to receive the exhaust stream from the engine.
- a side branch is in communication with the main exhaust passageway.
- a regeneration unit is positioned within the side branch for combusting a fuel and heating the exhaust flowing through the main exhaust passageway.
- An ion sensor is operable to output a signal indicative of the presence of fuel combustion.
- a controller selectively operates the regeneration unit to increase the exhaust temperature. The controller is operable to control a supply of fuel to the regeneration unit based on the ion sensor signal.
- a system is provided to control the temperature of an exhaust stream from an engine at a location upstream from an exhaust aftertreatment apparatus.
- the system includes a main exhaust passageway adapted to receive the exhaust stream from the engine.
- a blind side branch is in communication with the main exhaust passageway.
- a regeneration unit is positioned within the side branch for combusting a fuel and heating the exhaust flowing through the main exhaust passageway.
- the regeneration unit includes a housing positioned within and spaced apart from a sidewall of the side branch, a nozzle for injecting the fuel into a chamber defined by the housing, and an igniter to initiate combustion of the fuel within the housing.
- a controller selectively operates the regeneration unit to increase the exhaust temperature.
- Figure 1 is a schematic depicting a system for controlling the temperature of an exhaust from an engine
- Figure 2 is a sectional side view of a portion of the exhaust aftertreatment system depicted in Figure 1 including a miniature regeneration unit;
- Figure 3 is a cross-sectional view of an alternate regeneration unit
- Figure 4 is a cross-sectional view of an alternate regeneration unit
- Figure 5 is a cross-sectional view of an engine aftertreatment system including a flow diverter
- Figure 6 is a perspective view of the aftertreatment system including the flow diverter
- Figure 7 is a partial perspective view of a portion of another alternate regeneration unit;
- Figure 8 is a cross-sectional view of another alternate regeneration unit;
- Figures 9-13 are perspective views depicting alternate inlet tube portions of the regeneration unit.
- Figure 14 is a sectional view depicting another alternate exhaust aftertreatment system.
- Figure 1 depicts an exhaust gas aftertreatment system 10 for treating the exhaust output by an exemplary engine 12 to a main exhaust passageway 14.
- An intake passage 16 is coupled to engine 12 to provide combustion air thereto.
- a turbocharger 18 includes a driven member (not shown) positioned in an exhaust stream. During engine operation, the exhaust stream causes the driven member to rotate and provide compressed air to intake passage 16 prior to entry into engine 12.
- Exhaust aftertreatment system 10 also includes a miniature regeneration unit 26 positioned downstream from turbocharger 18 and upstream from a number of exhaust aftertreatment devices.
- the aftertreatment devices include a hydrocarbon injector 28, a diesel oxidation catalyst 30 and a diesel particulate filter 32.
- Regeneration unit 26 is positioned within a side branch portion
- Regeneration unit 26 may be used to heat the exhaust passing through passageway 14 to an elevated temperature that will enhance the efficiency of DOC 30 and allow regeneration of DPF 32.
- Regeneration unit 26 may include one or more injectors 36 for injecting a suitable fuel and an oxygenator.
- the fuel may include hydrogen or a hydrocarbon.
- Injector 36 may be structured as a combined injector that injects both the fuel and oxygenator, as shown in Figure 1 , or may include separate injectors for the fuel and the oxygenator ( Figure 1 1 ).
- a control module 38 is provided to monitor and control the flows through the injector 36 and the ignition of fuel by a first igniter 42 using any suitable processor(s), sensors, flow control valves, electric coils, etc.
- Regeneration unit 26 includes a housing 50 constructed as a multi-piece assembly of fabricated metal components.
- Housing 50 includes an inlet tube 52, a cylindrically-shaped body 54, and an outlet tube 56.
- An inlet header 58 is fixed to inlet tube 52.
- Inlet header 58 is fixed to side branch portion 34 and encloses one of its ends.
- Other single or multi-piece inlet assemblies are also contemplated as being within the scope of the present disclosure.
- An annular volume 62 exists in a space between an inner surface 64 of side branch portion 34 and an outer surface of housing 50.
- An injector mount 65 is fixed to inlet tube 52 and/or inlet header 58 to provide an attachment mechanism for injector 36.
- a nozzle portion 66 of injector 36 extends into inlet tube 52 such that atomized fuel may be injected within a primary combustion chamber 68 at least partially defined by an inner cylindrical surface 70 of body 54.
- Injector 36 includes a fuel inlet 72 and an air inlet 74.
- Fuel inlet 72 is in communication with a fuel delivery system 76 including a fuel tank 78, a fuel filter 80, a fuel pump 82 and a fuel block 84 interconnected by a fuel line 86. Operation of the components of fuel delivery system 76 selectively provides hydrocarbon to injector 36.
- a secondary air system 90 includes a secondary air filter 92 and a MAF sensor 94.
- a compressor 96 is in receipt of air that is passed through secondary air filter 92 and MAF sensor 94.
- Compressor 96 may include a portion of a supercharger, a turbocharger or a stand-alone electric compressor. Output from compressor 96 is provided to air inlet 74.
- fuel is injected via fuel inlet 72 and the oxygenator is provided via air inlet 74 to inject a stream of atomized fuel.
- First igniter 42 is mounted to side branch portion 34 downstream of inlet header 58 and is operable to combust the fuel provided by injector 36 within primary combustion chamber 68.
- Side branch portion 34 intersects exhaust passageway 14 at an angle A of substantially 30 degrees. The flame produced by regeneration unit 26 extends into exhaust passageway 14 at substantially the same angle.
- An elongated aperture 1 10 extends through a pipe 1 12 defining main exhaust passageway 14.
- a portion of body 54 and outlet tube 56 are positioned within exhaust passageway 14. Exhaust provided from engine 12 impinges on housing 50 and cools it during operation of regeneration unit 26. Furthermore, because housing 50 minimally intrudes within passageway 14, exhaust back pressure is also minimally increased. It should also be appreciated that side branch portion 34 and injector 36 minimally radially outwardly extend from pipe 1 12. Such an arrangement allows an Original Equipment Manufacturer to more easily package the miniature regeneration unit on the vehicle.
- first igniter 42 also includes an ion sensor 44 coupled to a coil 46.
- Ion sensor 44 may be in the form of an electrode positioned within combustion chamber 68.
- a voltage may be applied to the ion sensor to create an electric field from the sensor to a ground such as housing 50. When voltage is applied, an electric field radiates from the sensor to the ground. If free ions are present in the field, a small ion current may flow. The magnitude of the ion current provides an indication of the density of the ions.
- Control module 38 detects and receives signals from ion sensor 44 to determine the presence or absence of a flame. Ion sensor 44 may also determine if igniter 42 is fouled.
- Control module 38 is operable to supply and discontinue the supply of fuel to fuel inlet 72, air to air inlet 74 and electrical energy to igniter 42. Prior to initiating the supply of fuel and air to injector 36, control module 38 determines whether igniter 42 has been fouled via the signal provided by ion sensor 44. If the igniter is determined to be ready for operation, control module 38 may account for a number of engine and vehicle operating conditions such as engine speed, ambient temperature, vehicle speed, engine coolant temperature, oxygen content, mass air flow, pressure differential across diesel particulate filter 32, and any number of other vehicle parameters. If control module 38 determines that an increase in exhaust gas temperature is desired, fuel and secondary air are provided to injector 36. Coil 46 supplies electrical energy to igniter 42 to initiate combustion within primary combustion chamber 68.
- Control module 38 may also evaluate a number of other parameters including presence of combustion and temperature of the exhaust gas within passageway 14 at a location downstream from regeneration unit 26 to determine when to cease the supply of fuel and air to injector 36.
- control module 38 may receive signals from one or more temperature sensors located within regeneration unit 26, side branch portion 34 or within main passageway 14 to perform a closed loop control by operating regeneration unit 26 to maintain a desired temperature at a particular location. If combustion unexpectedly extinguishes, control module 38 ceases the supply of fuel.
- Other control schemes are also within the scope of the present disclosure.
- FIG. 3 depicts an alternate regeneration unit 26a coupled to side branch portion 34.
- Regeneration unit 26a is substantially similar to regeneration unit 26 except that the reduced or necked-down outlet tube portion of housing 50 has been removed. As such, like elements will be identified with an "a" suffix.
- Main body portion 54a includes a substantially constant diameter that terminates at an outlet opening 53a.
- FIG. 4 depicts another alternate regeneration unit identified at reference numeral 26b.
- Regeneration unit 26b is substantially similar to regeneration unit 26 except that a length L has been increased to cause a greater portion of housing 50b to be positioned within exhaust passageway 14. Like elements will include a "b" suffix. The location of igniter 42b has been changed to be further from an end of nozzle 66.
- Figures 5 and 6 depict another alternate arrangement including a diverter plate 140 positioned within pipe 1 12 upstream of miniature regeneration unit 26.
- Diverter plate 140 includes a D-shaped aperture 142 extending therethrough.
- Diverter plate 140 is positioned at an angle as depicted in Figure 5 to urge exhaust flowing through passageway 14 to flow toward and around housing 50. The diverted exhaust flow transfers heat from regeneration unit 26 to the exhaust flowing through pipe 1 12.
- FIG. 7 depicts a portion of another alternate regeneration unit identified at reference numeral 26c.
- Regeneration unit 26c is substantially similar to regeneration unit 26 except that outlet tube 56c is increased in length and includes a plurality of apertures 144 extending therethrough. The extended outlet tube length and apertures 144 assure that the combustion flame is properly maintained and directed during operation of regeneration unit 26c. As exhaust flows through passageway 14, some of the exhaust passes through apertures 144 creating a mixing effect resulting in a more desirable temperature distribution, flame stability and flame quality.
- FIG. 8 depicts another alternate regeneration unit identified at reference numeral 26d.
- Regeneration unit 26d includes the components of regeneration unit 26 as well as an additional housing portion 145 defining a secondary combustion chamber 146.
- a second igniter 148 extends into secondary combustion chamber 146.
- a plurality of apertures 149 extends through second housing 145 to allow exhaust gas to enter secondary combustion chamber 146. Enhanced exhaust heating and mixing may be achieved through the use of regeneration unit 26d.
- FIG. 9-13 depict alternate inlet tube configurations that may be used in lieu of inlet tube 52.
- Each of the modified inlet tubes includes a plurality of circumferentially spaced apart apertures 150 extending through an end wall 152. Apertures 150 allow exhaust gas flowing through passageway 14 to enter primary combustion chamber 68. By providing oxygen into primary combustion chamber 68 via apertures 150, the pressure of secondary air provided by compressor 96 to injector 36 may be reduced. The cost and size of compressor 96 may also be reduced.
- Inlet tube 52e shown in Figure 9 includes a plurality of flaps 156e attached at one end to end wall 152e. Flaps 156e are arranged to induce gas passing through apertures 150e to swirl.
- Figure 10 depicts rectangularly shaped apertures 150f with no flaps.
- Figure 1 1 depicts a plurality of flaps 156g attached at a radial inner extent of apertures 150g. Flaps 156g extend at an angle to exhaust flow in a radially outward direction.
- Figure 12 refers to another alternate inlet tube assembly 52h having a plurality of apertures 150h and a plurality of flaps 156h. Flaps 156h radially inwardly extend.
- Figure 13 shows a plurality of circular apertures 150i circumferentially spaced apart from one another. No flaps partially block the apertures.
- Each of the arrangements depicted in Figures 9-13 provide a substantially homogenous distribution of flow within primary combustion chamber 68.
- any one of the described miniature regeneration unit arrangements including apertures 150 may be equipped with an injector 36j having a relocated secondary air inlet 74j, to inject compressed air at a relatively low pressure into annular volume 62, as shown in Figure 14.
- Fuel inlet 72j positioned to inject atomized fuel within primary combustion chamber 68j, as previously discussed. Some of the air injected into annular volume 62j passes through apertures 150i and the remaining portion of the secondary air passes over an outside surface of housing 50j to cool miniature regeneration unit 26j.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Processes For Solid Components From Exhaust (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112011104731T DE112011104731T5 (en) | 2011-01-17 | 2011-12-19 | Miniature regeneration unit |
CN2011800653407A CN103314193A (en) | 2011-01-17 | 2011-12-19 | Miniature regeneration unit |
BR112013017820A BR112013017820A2 (en) | 2011-01-17 | 2011-12-19 | miniature regeneration unit |
KR1020137021453A KR20140034143A (en) | 2011-01-17 | 2011-12-19 | Miniature regeneration unit |
JP2013549425A JP2014505827A (en) | 2011-01-17 | 2011-12-19 | Small playback unit |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161433297P | 2011-01-17 | 2011-01-17 | |
US61/433,297 | 2011-01-17 | ||
US13/197,829 US20110289906A1 (en) | 2009-04-27 | 2011-08-04 | Miniature Regeneration Unit |
US13/197,829 | 2011-08-04 |
Publications (2)
Publication Number | Publication Date |
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WO2012099667A2 true WO2012099667A2 (en) | 2012-07-26 |
WO2012099667A3 WO2012099667A3 (en) | 2012-11-01 |
Family
ID=46516292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2011/065770 WO2012099667A2 (en) | 2011-01-17 | 2011-12-19 | Miniature regeneration unit |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110289906A1 (en) |
JP (1) | JP2014505827A (en) |
KR (1) | KR20140034143A (en) |
CN (1) | CN103314193A (en) |
BR (1) | BR112013017820A2 (en) |
DE (1) | DE112011104731T5 (en) |
WO (1) | WO2012099667A2 (en) |
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CA2865426C (en) | 2012-02-27 | 2020-07-28 | Deec, Inc. | Oxygen-rich plasma generators for boosting internal combustion engines |
US9133743B2 (en) | 2012-03-15 | 2015-09-15 | Tenneco Automotive Operating Company Inc. | Exhaust treatment secondary air supply system |
US9027332B2 (en) * | 2013-02-27 | 2015-05-12 | Tenneco Automotive Operating Company Inc. | Ion sensor with decoking heater |
US9027331B2 (en) * | 2013-02-27 | 2015-05-12 | Tenneco Automotive Operating Company Inc. | Exhaust aftertreatment burner with preheated combustion air |
US8991163B2 (en) | 2013-02-27 | 2015-03-31 | Tenneco Automotive Operating Company Inc. | Burner with air-assisted fuel nozzle and vaporizing ignition system |
US8959902B2 (en) | 2013-02-27 | 2015-02-24 | Tenneco Automotive Operating Company Inc. | Exhaust treatment burner and mixer system |
US9234444B2 (en) * | 2013-02-28 | 2016-01-12 | Caterpillar Inc. | Flame detection system for particulate filter regeneration |
US8893478B2 (en) | 2013-03-01 | 2014-11-25 | Tenneco Automotive Operating Company Inc. | Compressor for exhaust treatment system |
US9057303B2 (en) * | 2013-03-14 | 2015-06-16 | Tenneco Automotive Operating Company Inc. | Exhaust system for dual fuel engines |
US9534525B2 (en) | 2015-05-27 | 2017-01-03 | Tenneco Automotive Operating Company Inc. | Mixer assembly for exhaust aftertreatment system |
US10519829B2 (en) | 2016-02-22 | 2019-12-31 | Hino Motors, Ltd. | Exhaust purification system |
KR102437648B1 (en) | 2016-03-07 | 2022-08-29 | 하이테크 파워, 인크. | A method of generating and dispensing a secondary fuel for an internal combustion engine |
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IT202100001892A1 (en) * | 2021-01-29 | 2022-07-29 | Marelli Europe Spa | HEATER DEVICE FOR AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE |
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- 2011-08-04 US US13/197,829 patent/US20110289906A1/en not_active Abandoned
- 2011-12-19 JP JP2013549425A patent/JP2014505827A/en active Pending
- 2011-12-19 WO PCT/US2011/065770 patent/WO2012099667A2/en active Application Filing
- 2011-12-19 KR KR1020137021453A patent/KR20140034143A/en not_active Application Discontinuation
- 2011-12-19 DE DE112011104731T patent/DE112011104731T5/en not_active Withdrawn
- 2011-12-19 CN CN2011800653407A patent/CN103314193A/en active Pending
- 2011-12-19 BR BR112013017820A patent/BR112013017820A2/en not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
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US20110289906A1 (en) | 2011-12-01 |
KR20140034143A (en) | 2014-03-19 |
BR112013017820A2 (en) | 2016-10-11 |
WO2012099667A3 (en) | 2012-11-01 |
CN103314193A (en) | 2013-09-18 |
JP2014505827A (en) | 2014-03-06 |
DE112011104731T5 (en) | 2013-11-28 |
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