US20150167520A1 - Inlet Module for an Emissions Cleaning Module - Google Patents

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Publication number
US20150167520A1
US20150167520A1 US14/391,316 US201214391316A US2015167520A1 US 20150167520 A1 US20150167520 A1 US 20150167520A1 US 201214391316 A US201214391316 A US 201214391316A US 2015167520 A1 US2015167520 A1 US 2015167520A1
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module
inlet
inlet module
conduit
zone
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US14/391,316
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English (en)
Inventor
Naseer A. Niaz
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Perkins Engines Co Ltd
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Perkins Engines Co Ltd
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Assigned to PERKINS ENGINES COMPANY LIMITED reassignment PERKINS ENGINES COMPANY LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NIAZ, NASEER A.
Publication of US20150167520A1 publication Critical patent/US20150167520A1/en
Abandoned legal-status Critical Current

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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
    • F01N3/18—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 methods of operation; Control
    • F01N3/20—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 methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0876—Insulating elements, e.g. for sound insulation for mounting around heat sources, e.g. exhaust pipes
    • 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
    • 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
    • F01N13/008—Mounting or arrangement of exhaust sensors in or on exhaust apparatus
    • 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
    • F01N13/08—Other arrangements or adaptations of exhaust conduits
    • 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
    • F01N13/14—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 thermal insulation
    • 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
    • F01N13/14—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 thermal insulation
    • F01N13/141—Double-walled exhaust pipes or housings
    • F01N13/143—Double-walled exhaust pipes or housings with air filling the space between both walls
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • 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
    • F01N13/18—Construction facilitating manufacture, assembly, or disassembly
    • F01N13/1805—Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body
    • 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
    • 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
    • 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
    • F01N3/0233—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 periodically cleaning filter by blowing a gas through the filter in a direction opposite to exhaust flow, e.g. exposing filter to engine air intake
    • 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
    • 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
    • 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
    • F01N3/28—Construction of catalytic reactors
    • 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
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
    • G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K7/00—Constructional details common to different types of electric apparatus
    • H05K7/20—Modifications to facilitate cooling, ventilating, or heating
    • H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
    • H05K7/20436—Inner thermal coupling elements in heat dissipating housings, e.g. protrusions or depressions integrally formed in the housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4313—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor comprising a plurality of stacked ducts having their axes parallel to the tube axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/4317—Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
    • B01F25/43197—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor characterised by the mounting of the baffles or obstructions
    • B01F25/431971—Mounted on the wall
    • 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
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/086—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling having means to impart whirling motion to the gases
    • 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
    • F01N2240/20—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 flow director or deflector
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
    • F01N2260/022—Exhaust treating devices having provisions not otherwise provided for for cooling the device using air
    • 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
    • F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
    • F01N2260/20—Exhaust treating devices having provisions not otherwise provided for for heat or sound protection, e.g. using a shield or specially shaped outer surface of exhaust device
    • 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
    • F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
    • F01N2450/22—Methods or apparatus for fitting, inserting or repairing different elements by welding or brazing
    • 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
    • F01N2470/00—Structure or shape of gas passages, pipes or tubes
    • F01N2470/02—Tubes being perforated
    • F01N2470/04—Tubes being perforated characterised by shape, disposition or dimensions of apertures
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/02—Two or more expansion chambers in series connected by means of tubes
    • F01N2490/06—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet in opposite directions
    • 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
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49345—Catalytic device making

Definitions

  • the disclosure relates to an apparatus for use in cleaning of fluids emitted during the operation of combustion engines.
  • Engines for example IC engines burning gasoline, diesel or biofuel, output various harmful substances which must be treated to meet current and future emissions legislation. Most commonly those substances comprise hydrocarbons (HC), carbon monoxides (CO), mono-nitrogen oxides (NO x ) and particulate matter, such as carbon (C), a constituent of soot. Some of those substances may be reduced by careful control of the operating conditions of the engine, but usually it is necessary to provide an emissions cleaning module downstream of the engine to treat at least some of those substances entrained in the exhaust gas.
  • Various apparatus for reducing and/or eliminating constituents in emissions are known.
  • Oxidation devices generally include a catalyst to convert those substances into carbon dioxide and water, which are significantly less harmful.
  • emissions cleaning modules may include filtration devices to restrict the particulates present in the exhaust gas from being output to atmosphere. The soot collected in the filtration device must later be removed to maintain the efficiency of the filtration device. The methods by which soot may be removed from the filtration device are well known in the art and may generally be referred to as regeneration which occurs at elevated temperatures.
  • engine emissions can be cleaned, meaning that a proportion of the harmful substances which would otherwise be released to atmosphere are instead converted to carbon dioxide (CO 2 ), nitrogen (N 2 ) and water (H 2 O).
  • CO 2 carbon dioxide
  • N 2 nitrogen
  • H 2 O water
  • the emissions cleaning module may be desirable to create a uniform flow of the exhaust gases within the conduits of the module. This may allow better operation of the stages within the module, such as an oxidation device. It has been found that the geometry of the exhaust gas pipework connected to the emissions cleaning module which supplies the exhaust gases may affect the uniformity of flow within the conduits. In turn, this may affect the efficient operation of the emissions cleaning module.
  • an inlet module for an emissions cleaning module for a diesel engine there is provided an emissions cleaning module comprising such an inlet module.
  • the inlet module for an emissions cleaning module of a combustion engine, may comprise:
  • the emissions cleaning module may comprise an inlet module as described above.
  • FIG. 1 shows an emissions cleaning module to which can be connected an inlet module of the present disclosure
  • FIG. 2 shows the emissions cleaning module of FIG. 1 from another angle showing the inlet module
  • FIG. 3 shows an end view of the outside of the inlet module
  • FIG. 4 shows a perspective view of the inside of the inlet module
  • FIG. 5 shows an exploded perspective view of the inlet module of FIG. 4 ;
  • FIG. 6 shows a perspective view of a tubular member of the inlet module of FIG. 4 ;
  • FIG. 7 shows an arrangement of aperture zones of the tubular member of FIG. 4 ;
  • FIG. 8 shows aperture arrangements of the aperture zones of FIG. 7 ;
  • FIG. 9 a shows a first exhaust pipe arrangement and FIGS. 9 b and 9 c show a comparison of flow uniformity in the emissions cleaning module when gas is supplied using that first exhaust pipe arrangement;
  • FIG. 10 a shows a second exhaust pipe arrangement and FIGS. 10 b and 10 c show a comparison of flow uniformity in the emissions cleaning module when gas is supplied using that second exhaust pipe arrangement;
  • FIG. 11 a shows a third exhaust pipe arrangement and FIG. 11 b and 119 c show a comparison of flow uniformity in the emissions cleaning module when gas is supplied using that third exhaust pipe arrangement;
  • FIGS. 12 to 14 show a comparison of flow uniformity in the emissions cleaning module of FIGS. 1 and 2 when varying flow rate and gas temperature.
  • the present disclosure is directed to an inlet module 2 for use with an emissions cleaning module 1 .
  • the emissions cleaning module 1 is illustrated in FIG. 1 .
  • the inlet module 2 suitable for use with the emissions cleaning module 1 , is illustrated in FIG. 4 , and is shown connected to the emissions cleaning module 1 in FIGS. 2 and 3 .
  • the emissions cleaning module 1 may comprise a first conduit 10 , a second conduit 20 , a third conduit 30 , and a support structure 40 .
  • the support structure 40 may comprise a first support member 50 and a second support member 60 .
  • Each support member 50 , 60 may be generally planar and may be of rigid material, for example metal.
  • the first, second and third conduits 10 , 20 , 30 may be elongate, having an axis of elongation, and may have substantially constant cross-section along the axis of elongation.
  • the first, second and third conduits 10 , 20 , 30 may be substantially cylindrical.
  • the first conduit 10 may comprise a first end 11 providing an inlet to the conduit and a second end 12 providing an outlet to the conduit.
  • the second conduit 20 may comprise a first end 21 providing an outlet to the conduit and a second end 22 providing an inlet to the conduit.
  • the third conduit 30 may comprise a first end 31 providing and inlet to the conduit and a second end 32 providing an outlet to the conduit.
  • the conduits 10 , 20 , 30 may extend between the support members 50 , 60 .
  • the conduits 10 , 20 , 30 may be generally substantially parallel.
  • the first ends 11 , 21 , 31 of the first, second and third conduits 10 , 20 , 30 may be received in and may be shaped to correspond with first, second and third openings (not shown), respectively, of the first support member 50 .
  • the second ends 12 , 22 , 32 of the first, second and third conduits 10 , 20 , 30 may be received in and may be shaped to correspond with first, second and third openings (not shown), respectively, of the second support member 60 .
  • lateral movement of the conduits may be restricted.
  • the conduits 10 , 20 , 30 may all be of substantially similar length.
  • the first conduit 10 may have a first diameter
  • the second conduit 20 may have a second diameter
  • the third conduit 30 may have a third diameter.
  • the second diameter may be smaller than the first and third diameters.
  • first and second ends 11 , 21 , 31 , 12 , 22 , 32 of the conduits 10 , 20 , 30 may be welded, adhered or otherwise secured to portions of the support members 50 , 60 defining or surrounding the openings.
  • first and second ends 11 , 21 , 31 , 12 , 22 , 32 of the conduits 10 , 20 , 30 may abut the inner sides of the support members 50 , 60 so as to overlie respective openings in the support members 50 , 60 .
  • the first, second and third conduits 10 , 20 , 30 and the first and second support members 50 , 60 may be interconnected in a manner which restricts relative translational movement of those components.
  • the first, second and third conduits 10 , 20 , 30 and the first and second support members 50 , 60 may be interconnected in a manner which restricts rotational movement of one component with respect to another.
  • the first conduit 10 may be coupled to the second conduit 20 via a first end coupling 15 for fluidly connecting the outlet of the first conduit to the inlet of the second conduit.
  • the first end coupling 15 may comprise an injector module 16 .
  • the second conduit 20 may be coupled to the third conduit 30 via a second end coupling 25 for fluidly connecting the outlet of the second conduit to the inlet of the third conduit.
  • Each of the first and second end couplings may define, in combination with its respective support member, a flow path through which exhaust gas may pass between adjacent conduits.
  • the inlet module 2 may be connected to, or otherwise integrated with, the first end 11 of the first conduit 10 such that fluid may pass from the inlet module 2 into a first portion of the first conduit 10 .
  • the inlet module 2 may act to produce a more uniform flow of fluids, such as exhaust gases, across the cross-section of the first conduit 10 .
  • the inlet module 2 may be connected to, or otherwise be integrated with, the support member 50 and arranged over the first opening in that support member.
  • the inlet module 2 may comprise a housing 100 defining a cavity 101 in which may be arranged a flow distributor 106 .
  • the housing 100 may be in the form of an end cap which may comprise a closed end face 103 and a dependent side wall 104 . Alternatively, the housing may be dome shaped.
  • the end cap may be generally circular in cross section. An end of the end cap opposite the closed end face 103 may be open which may define an outlet 105 of the inlet module 2 .
  • a rim 107 of the side wall 104 may be provided with a fastening mechanism for connecting the inlet module 2 to the first end 11 of the first conduit 10 or to the support member 50 .
  • the fastening mechanism may be, for example, a threaded screw fit or a clamping mechanism.
  • a sealing member may be provided interposed between the inlet module 2 and the first end 11 of the first conduit 10 which may help to provide a fluid tight seal between the inlet module and the first conduit 10 .
  • the inlet module 2 may be integrated with the first end 11 by, for example, welding or by an interference push-fit.
  • the flow distributor 106 may comprise a tubular member 108 which may extend at least part way into or across the cavity 101 in the housing 100 .
  • the tubular member 108 may comprise an open first end 109 .
  • the first end 109 may itself define an inlet of the inlet module 2 .
  • a shaped connector 110 may be provided which may be attached to the first end 109 of the tubular member.
  • the shaped connector 110 may define the inlet 111 of the inlet module 2 and may be sized and shaped so as to be configured to be connected to an exhaust conduit or hose of a combustion engine.
  • the tubular member 108 may be arranged transverse to the end cap, as shown in FIGS. 4 and 5 .
  • the tubular member 108 may extend through a first side wall aperture 120 formed in the side wall 104 at one point of the end cap towards and into contact with an end piece 113 which may itself be received in a second side wall aperture 121 of the end cap at a point on an opposite side of the end cap.
  • the end piece 113 may serve to close off an open second end 112 of the tubular member 118 , opposite the open first end 109 .
  • the tubular member 108 may be spaced from the closed end face 103 .
  • the tubular member 108 may form a structural member which may serve to strengthen the end cap. Alternatively, the second end 112 may locate against an inner surface of the side wall and be secured in place to restrict relative movement of those parts.
  • the tubular member 108 may define a conduit within the tubular member 108 through which exhaust gases may flow in use.
  • the tubular member 108 may be configured to have a substantially oval cross sectional shape in its transverse plane perpendicular to the elongate axis of the tubular member 108 . This may allow for a smaller depth for the end cap.
  • the tubular member 108 may be formed from stamped and rolled stainless steel which may be welded to form a closed tubular section. Alternatively, it may be extruded or cast.
  • the tubular member 108 may comprise a first face 108 a which may be directed towards the outlet 105 of the end cap and a second, opposed face 108 b which may be directed towards the closed end face 103 of the end cap.
  • the first and second faces may be connected by curved side sections 108 c of the tubular member 108 .
  • the faces 108 a and 108 b may be flat or substantially flat.
  • the flow distributor 106 may comprise a plurality of apertures 114 through which, in use, the exhaust gases pass into the cavity 101 . There may be provided a large plurality of apertures 114 .
  • the apertures 114 may be provided in the tubular member 108 and may be arranged into a plurality of zones having predefined aperture areas which may vary depending on the location of the zones. The number of apertures 114 in each zone, the size of apertures 114 in each zone and/or the spacing of apertures 114 in each zone may be varied so that the resistance to the passage of exhaust gases out of the flow distributor 106 may be configured to vary between zones.
  • the apertures 114 are varied in terms of their number and/or spacing in each zone. As shown in FIGS. 7 and 8 , three types of zone A, B, C may be provided.
  • a zone of type A may be provided with apertures 114 a of diameter 5 mm, where the apertures 114 a may be arranged in rows.
  • the apertures 114 a in each row may have a centre-to-centre spacing of 15 mm.
  • the rows may have a spacing of 7.5 mm. Consequently, the percentage open area of the zone (defined as sum of the area of the apertures in the zone as a percentage of the total area of the zone) may be 17.5%.
  • the zone of type A may present, relatively, a medium resistance to outflow of gas.
  • the percentage open area of the zone may be 10 to 25%.
  • a zone of type B may be provided with apertures 114 b of diameter 5 mm, where the apertures 114 b may be arranged in rows.
  • the apertures 114 b in each row may have a centre-to-centre spacing of 15 mm.
  • the rows may have a spacing of 15 mm. Consequently, the percentage open area of the zone may be 8.75%.
  • the zone of type B may present, relatively, a high resistance to outflow of gas.
  • the percentage open area of the zone may be 5 to 12%.
  • the percentage open area of the zone of type B may be half that of the zone of type A.
  • a zone of type C may be provided with apertures 114 c of diameter 5 mm, where the apertures 114 c may be arranged in rows.
  • the apertures 114 c in each row may have a centre-to-centre spacing of 7.5 mm.
  • the rows may have a spacing of 7.5 mm. Consequently, the percentage open area of the zone (defined as sum of the area of the apertures in the zone as a percentage of the total area of the zone) may be 35%.
  • the zone of type C may present, relatively, a low resistance to outflow of gas.
  • the percentage open area of the zone may be 20 to 50%.
  • the percentage open area of the zone of type C may be twice that of the zone of type A.
  • the first face 108 a of the tubular member 108 may be provided with a zone of type A nearest the first end 109 and a zone of type B nearest the second end 112 .
  • the zone of type A may extend approximately two-thirds of the length of the tubular member 108
  • the zone of type B may extend approximately one-third of the length.
  • the second face 108 b of the tubular member 108 may be provided with a zone of type C nearest the first end 109 and a zone of type A nearest the second end 112 .
  • the zone of type C may extend approximately two-thirds of the length of the tubular member 108
  • the zone of type A may extend approximately one-third of the length.
  • the curved side sections 108 c of the tubular member 108 may be provided with a zone of type C nearest the first end 109 and a zone of type A nearest the second end 112 .
  • the zone of type C may extend approximately two-thirds of the length of the tubular member 108
  • the zone of type A may extend approximately one-third of the length.
  • the inlet module 2 may act to produce a more uniform flow of fluids, such as exhaust gases, across the cross-section of the first conduit 10 as illustrated in FIGS. 9 to 14 .
  • the uniformity of gas flow across a cross-section of a conduit may be characterised by the Gamma Uniformity Index, ⁇ :
  • FIGS. 9 a , 10 a and 11 a illustrate three different configurations of exhaust gas pipework 130 that may be connected to the shaped connector 110 of the inlet module 2 .
  • the connected pipework 130 a is relatively straight, with only a slight dog-leg in the vicinity of the shaped connector 110 .
  • the connected pipework 130 b comprises a 90 degree bend on approach to the shaped connector 110 .
  • the connected pipework 130 c comprises two 90 degree bends on approach to the shaped connector 110 .
  • FIGS. 9 c , 10 c and 11 c illustrate the respective flow uniformity for the three configurations with a standard end cap with no flow distributor 106 .
  • FIGS. 9 b , 10 b and 11 b illustrate the respective flow uniformity for the three configurations with the inlet module 102 of the present disclosure in use.
  • the Gamma Uniformity Indices are given in the table below:
  • FIG. 9a 0.75 0.96
  • FIG. 10a 0.75 0.95
  • FIG. 11a 0.87 0.96
  • use of the inlet module 2 may advantageously significantly increase the uniformity of flow across the cross-section. It also, advantageously, may produce a highly uniform flow independent of the geometrically configuration of the upstream exhaust gas pipework 130 .
  • use of the inlet module 2 may advantageously produce a highly uniform flow irrespective of the temperature and/or flow rate of the exhaust gases.
  • the Gamma Uniformity Indices are given in the table below:
  • use of the inlet module 2 may advantageously significantly increase the uniformity of flow across the cross-section even with varying temperature and flow rate of exhaust gases.
  • An outlet for fluid from the emissions cleaning module 1 may be provided at the second end 32 of the third conduit such that fluid may be released from the emissions cleaning module 1 , perhaps into atmosphere.
  • the outlet may comprise a flow distributor which may also be of the type shown in FIG. 4 .
  • DOC diesel oxidation catalyst
  • DPF diesel particulate filter
  • injector an injector
  • mixer a mixer
  • SCR selective catalyst reduction
  • AMOX ammonia oxidation catalyst
  • the DOC module may be located in a first portion of the first conduit 10 towards the first, inlet, end 11 of the first conduit 10 .
  • the DPF module may be located in a second portion of the first conduit 10 towards the second, outlet, end 12 of the first conduit 10 .
  • the first end coupling 15 may provide a fluid flow path from the second end 12 of the first conduit 10 to the second end 22 of the second conduit 20 .
  • the first end coupling 15 may comprise the injector module 16 .
  • a mixer module may be located in the second conduit 20 .
  • the mixer module may be configured to mix a fluid injected by the injector module 16 with a fluid arriving from the first conduit 10 .
  • the mixer module may comprise multiple features, such as interspersed fins, which may give rise to an even blend of the injected fluid with the fluid from the first conduit 10 .
  • the second end coupling 25 may provide a fluid flow path from the first end of the second conduit to the first end of the third conduit.
  • the SCR module may be located in a first portion of the third conduit 30 towards the first end 31 of the third conduit 30 .
  • the SCR module may comprise a catalyst surface intended to catalyse a reaction to occur between the two fluids mixed in the mixer module and output by the diffuser.
  • the AMOX module may both be located in a second portion of the third conduit 30 towards the second end 32 of the third conduit 30 .
  • the AMOX module may comprise a catalyst which may catalyse a reaction of one or more of the products output from the SCR module.
  • the emissions cleaning module 1 may comprise one or more sensors for sensing one or more conditions in the emissions cleaning module 1 , such as temperature or quantity of NO x .
  • Each sensor may penetrate a conduit 10 , 20 , 30 of the emissions cleaning module such that those elements of the sensor (i.e. electronic components) which need not be located within a volume to be sensed may be located on an exterior surface of the conduit 10 , 20 , 30 . In this manner, sensitive elements of the sensors can be located away from high temperatures likely to occur inside the conduit.
  • the sensors may be arranged such that those elements of the sensors located on the exterior surface of the third conduit may be distributed in a fashion which is diagonal to a line parallel to the elongate axis of the third conduit. This may allow for increased air flow so as to reduce damage to the sensors which might otherwise be caused due to heat.
  • fluid such as exhaust gases
  • the emissions cleaning module 1 may be supplied to the emissions cleaning module 1 via the inlet module 2 .
  • the fluid may enter the inlet module 2 through the inlet 111 defined by the shaped connector 110 .
  • the fluid may then pass through the first end 109 of the tubular member and along the conduit defined by the tubular member 108 .
  • As the fluid passes along the conduit it may flow out through the apertures 114 into the cavity 101 of the end cap. From the cavity 101 the fluid may exit through the outlet 105 into the inlet of the first conduit 10 .
  • the flow distributor 106 may produce a more uniform flow of fluid into the first conduit 11 . This may have the advantage that the fluid flow reaching the first and subsequent modules, for example the diesel oxidation catalyst (DOC) module and the diesel particulate filter (DPF) module, is more uniform. Consequently, a more efficient treatment of the fluid by those modules may be achieved.
  • DOC diesel oxidation catalyst
  • DPF diesel particulate filter
  • Fluid may pass into the DOC module in the first portion of the first conduit 10 .
  • the pressure of the fluid Prior to receipt at the inlet module 2 , the pressure of the fluid may be controlled by a back pressure valve.
  • the DOC module may comprise one or more catalysts, such as palladium or platinum. These materials serve as catalysts to cause oxidation of hydrocarbons ([HC]) and carbon monoxide (CO) present in the fluid flow in order to produce carbon dioxide (CO 2 ) and water (H 2 O).
  • the catalysts may be distributed in a manner so as to maximise the surface area of catalyst material in order to increase effectiveness of the catalyst in catalysing reactions.
  • Fluid may flow from the DOC module to the DPF module which comprises features which are intended to prevent onward passage of carbon (C) in the form of soot. Carbon particles in the fluid may thus trapped in the filter.
  • the filter may be regenerated through known regeneration techniques. These techniques may involve controlling one or more of the temperature of the fluid, the pressure of the fluid and the proportion of unburnt fuel in the fluid.
  • the injector module 16 may be associated with or attachable to a pump electronic tank unit (PETU).
  • PETU pump electronic tank unit
  • the pump electronic tank unit may comprise a tank for providing a reservoir for fluid to be injected by the injector. Such fluids may include urea or ammonia.
  • the tank may comprise a lower portion having a first cross sectional area and an upper portion having a second cross sectional area.
  • the second cross sectional area may be smaller than the first cross sectional area.
  • the difference in cross sectional area between the first and second portions may provide for a volume to house additional components of the PETU. This may provide better protection than if components were simply attached to an otherwise external surface of the tank.
  • the PETU may further comprise a controller configured to control a volume of fluid to be injected from the tank by the injector.
  • the controller may have as inputs, for example, temperature information and quantity of NO x information which may be derived from sensors in the SCR module.
  • Fluid may pass from the injector module 16 into the mixer module located in the second conduit 20 .
  • the mixer module may comprise features for ensuring that the fluid originating from the first conduit 10 is well mixed with the fluid originating from the injector 16 .
  • the SCR module may comprise one or more catalysts through which the mixture of exhaust gas and urea/ammonia may flow. As the mixture passes over the surfaces of the catalyst a reaction may occur which converts the ammonia and NO x to diatomic nitrogen (N 2 ) and water (H 2 O).
  • Fluid may pass from the SCR module to the AMOX module located in the second portion of the third conduit 30 .
  • the AMOX module may comprise an oxidation catalyst which may cause residual ammonia present in the fluid exiting the SCR module to react to produce nitrogen (N 2 ) and water (H 2 O).
  • Fluid may pass from the AMOX module to the emissions cleaning module outlet located at the second end 32 of the third conduit 30 .
  • the flow distributor 106 has been described as a tubular member 108 .
  • the flow distributor 106 may take another geometric form, for example a wall or partition which may divide the cavity 101 of the inlet module 2 into two or more sections.
  • the present disclosure finds application in improving inlet flow of exhaust gases into an emissions cleaning module.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Biomedical Technology (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Thermal Sciences (AREA)
  • Acoustics & Sound (AREA)
  • General Physics & Mathematics (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Cleaning In General (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US14/391,316 2012-04-24 2012-07-27 Inlet Module for an Emissions Cleaning Module Abandoned US20150167520A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB201207201A GB201207201D0 (en) 2012-04-24 2012-04-24 Emissions cleaning module for a diesel engine
GB1207201.3 2012-04-24
PCT/GB2012/051828 WO2013160633A1 (en) 2012-04-24 2012-07-27 An inlet module for an emissions cleaning module

Publications (1)

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US20150167520A1 true US20150167520A1 (en) 2015-06-18

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Family Applications (10)

Application Number Title Priority Date Filing Date
US14/391,316 Abandoned US20150167520A1 (en) 2012-04-24 2012-07-27 Inlet Module for an Emissions Cleaning Module
US14/390,951 Abandoned US20150059457A1 (en) 2012-04-24 2012-07-27 Aftertreatment Module with Sensor Mounting Arrangement
US14/391,599 Active US9702288B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module
US14/394,618 Active 2033-03-17 US9494067B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module and associated electronics support unit
US14/391,136 Active US9341099B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module
US14/391,325 Abandoned US20150068400A1 (en) 2012-04-24 2012-12-07 Emissions Cleaning Module and a Method of Cleaning a Particulate Filter
US14/394,227 Active 2033-04-07 US9528411B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module
US14/395,012 Active 2033-01-22 US9638079B2 (en) 2012-04-24 2013-02-14 Exhaust mixer, emissions cleaning module and method
US14/395,332 Abandoned US20150061286A1 (en) 2012-04-24 2013-04-08 Outlet Module for an Emissions Cleaning Module
US14/391,138 Active 2033-09-14 US9617887B2 (en) 2012-04-24 2013-04-10 Emissions cleaning module for an engine

Family Applications After (9)

Application Number Title Priority Date Filing Date
US14/390,951 Abandoned US20150059457A1 (en) 2012-04-24 2012-07-27 Aftertreatment Module with Sensor Mounting Arrangement
US14/391,599 Active US9702288B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module
US14/394,618 Active 2033-03-17 US9494067B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module and associated electronics support unit
US14/391,136 Active US9341099B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module
US14/391,325 Abandoned US20150068400A1 (en) 2012-04-24 2012-12-07 Emissions Cleaning Module and a Method of Cleaning a Particulate Filter
US14/394,227 Active 2033-04-07 US9528411B2 (en) 2012-04-24 2012-12-07 Emissions cleaning module
US14/395,012 Active 2033-01-22 US9638079B2 (en) 2012-04-24 2013-02-14 Exhaust mixer, emissions cleaning module and method
US14/395,332 Abandoned US20150061286A1 (en) 2012-04-24 2013-04-08 Outlet Module for an Emissions Cleaning Module
US14/391,138 Active 2033-09-14 US9617887B2 (en) 2012-04-24 2013-04-10 Emissions cleaning module for an engine

Country Status (5)

Country Link
US (10) US20150167520A1 (de)
EP (10) EP2841727B1 (de)
CN (10) CN104302885A (de)
GB (1) GB201207201D0 (de)
WO (10) WO2013160634A1 (de)

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Owner name: PERKINS ENGINES COMPANY LIMITED, UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NIAZ, NASEER A.;REEL/FRAME:033914/0105

Effective date: 20120724

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION