CN101501308B - Swirl-stabilized burner for thermal management of exhaust system and associated method - Google Patents

Swirl-stabilized burner for thermal management of exhaust system and associated method Download PDF

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Publication number
CN101501308B
CN101501308B CN2006800209631A CN200680020963A CN101501308B CN 101501308 B CN101501308 B CN 101501308B CN 2006800209631 A CN2006800209631 A CN 2006800209631A CN 200680020963 A CN200680020963 A CN 200680020963A CN 101501308 B CN101501308 B CN 101501308B
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China
Prior art keywords
waste gas
flame
swirler
eddy current
fuel
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Expired - Fee Related
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CN2006800209631A
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Chinese (zh)
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CN101501308A (en
Inventor
威尔伯·H·克劳利
亚当·科克尔
约翰·菲利普·诺尔
托马斯·R·霍内特
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Arvin Technologies Inc
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Arvin Technologies Inc
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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
    • F01N3/24—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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the 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
    • F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
    • F01N11/007—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring oxygen or air concentration downstream of the 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
    • F01N13/009—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
    • 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
    • F01N3/0231—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 special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]
    • 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
    • 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
    • F01N3/0253—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 adding fuel to exhaust gases
    • F01N3/0256—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 adding fuel to exhaust gases the fuel being ignited by electrical means
    • 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
    • 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
    • F01N3/103—Oxidation catalysts for HC and CO only
    • 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
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
    • 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
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • 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
    • 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
    • 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
    • F01N2240/36—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 an exhaust flap
    • 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
    • F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
    • F01N2560/025—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting O2, e.g. lambda sensors
    • 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0814—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents combined with catalytic converters, e.g. NOx absorption/storage reduction 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
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
    • 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
    • Y02T10/12—Improving ICE efficiencies
    • 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

Abstract

An apparatus (10) comprises a reciprocating or Wankel engine (16), an exhaust gas passageway (20) fluidly coupled to the engine, and a fuel-fired burner (12). The burner is positioned in the exhaust gas passageway (20) and comprises a swirler (22) configured to swirl exhaust gas of the engine (16) so as to stabilize in the exhaust gas passageway (20) a flame generated by the burner (12) without use of supplemental combustion air when the engine (16) is operating above idle. An associated method is disclosed.

Description

The swirl-stabilized burner and the correlation technique that are used for thermal management of exhaust system
The preference that No. the 11/152nd, 869, the U.S. Patent application that the application requires to submit on June 15th, 2005 is incorporated its full content into this paper at this with way of reference.
Technical field
The present invention relates generally to emission reduction device is carried out the equipment and the method for heat management.
Background technique
There is the several different methods can heat emission abatement devices.For example, fuel burner and electric heating apparatus have been used for the emission reduction device of some types.
Summary of the invention
According to an aspect of the present invention; A kind of equipment is provided; It comprises the fuel burner that is arranged in exhaust steam passage, and said fuel burner comprises swirler, and said swirler is configured to when Reciprocating engine or Wankel engine move in idling with more than the idling; Make the waste gas of motor form eddy current, with the flame that stabilizing burner produces in exhaust steam passage under the situation of not using combustion-supporting air.This swirl-stabilized flame is used for emission reduction device is carried out heat management.The invention also discloses a kind of relevant method.
This flame holding has a plurality of advantages.For example, when waste gas flowrate is higher relatively, promoted the utilization of burner, otherwise higher relatively waste gas flowrate may flame blow-off.In addition, because burner can be handled this higher relatively flow rate, so can reduce the diameter of burner.In addition, flame holding impels flame length to reduce, thereby allows correspondingly to reduce the length of burner.Thereby to needing space-saving application (for example being stated from the vehicle) that the burner assembly of relative compact can be provided.
Burner can have a plurality of swirlers, is used to make waste gas to produce eddy current to promote flame holding.In a kind of example embodiment, burner has three swirlers, two parts of igniting that are positioned at burner, a major component that is positioned at burner.One in the swirler of the part of igniting is positioned at around the pilot fuel nozzle, is used for the pilot flame that the stable part of igniting produces.Another part swirler that ignites is positioned at around the porose ignitron, gets into pilot flame to impel the oxygen that is present in the waste gas through the hole that is defined in the ignitron.Swirler in the major component is in order to stablize the main flame that pilot flame is lighted.
The swirl stabilization of pilot flame and/or main flame is used for multiple emission reduction device is carried out heat management.This emission reduction device is including, but not limited to oxidation catalyst (for example diesel oxidation catalyst), particulate filter (for example catalysis or uncatalyzed diesel particulate filter), selective catalytic reduction device (" SCR device ") and/or NOx trap.
According to following description and accompanying drawing, above-mentioned characteristic of the present invention and further feature will become more obvious.
Description of drawings
Fig. 1 illustrates the swirl-stabilized flame of utilizing burner is carried out the equipment of heat management to emission reduction device simplified block diagram;
Fig. 2 is the perspective view of deciding what is right and what is wrong of burner;
Fig. 3 is the sectional view that the line 3-3 along Fig. 2 cuts open;
Fig. 3 A is the sectional view of a part of ignitron, shows the cold layer of the wall that is formed on the waste gas on the ignitron internal surface;
Fig. 4 is the sectional view that the line 4-4 along Fig. 3 cuts open;
Fig. 5 is the stereogram of the upstream side of variable vortex device;
Fig. 6 is the front view of the upstream side of variable vortex device;
Fig. 7 is the stereogram in the downstream side of variable vortex device;
Fig. 8 is the stereogram of the twisted blade of swirler;
Fig. 9 is the sectional view that the line 9-9 along Fig. 3 cuts open, and the alternate embodiments of the parts of burner is shown;
Figure 10 is the stereogram of a kind of mode of execution of swirler;
Figure 11 is the rear view of the swirler of Figure 10;
Figure 12 is the side view of the swirler of Figure 10 and 11; And
Figure 13 illustrates the stereogram that is positioned near the swirler tube of fuel distributor.
Embodiment
Though principle of the present invention is easy to make multiple modification and alternative form, still shows specific illustrative embodiments in the accompanying drawings, and will be described in greater detail here through by way of example.But should be appreciated that and be not intended to limit the present invention to disclosed concrete form, on the contrary, fall into interior modification, equivalent way and the alternative of spirit and scope of the invention that accompanying claims limits but be intended to cover all.
With reference to Fig. 1, equipment shown in it 10, said equipment 10 comprises burner 12, said burner 12 produces swirl-stabilized flame 14 in waste gas (" EG " among the figure).Waste gas comes from reciprocating type (for example piston type) or wankel (for example rotary) internal-combustion engine 16 (for example diesel engine), is used for the heat management of emission reduction device 18.Burner 12 produces flame 14 under the situation of not using the afterburning air.In other words, it uses the oxygen that exists in the waste gas to carry out combustion reaction.Burner 12 is arranged in exhaust steam passage 20, and comprises swirler 22, and said swirler 22 is configured to make waste gas to form the flame 14 that eddy current produces with stabilizing burner in exhaust steam passage 18 12.Thereby when motor 16 moved with idling with on idling, burner 12 can the steady flame 14.
As shown in the figure, swirler 22 makes waste gas form eddy current to produce the outer eddy region 24 of eddy current waste gas, and it causes in eddy region 24, producing the interior recirculation zone 26 of backflow waste gas.In eddy region 24, along with waste gas along axis 28 advanced downstream, waste gas forms eddy current (for example along clockwise direction or counterclockwise) around the axis of burner 12 28.In recirculation zone 16, waste gas refluxes towards swirler 22.Eddy region 24 can have higher relatively speed, and this depends on the for example output of motor 16.But recirculation zone 26 has and helps speed flame holding, relatively low.In other words, the speed in the recirculation zone 26 is enough low, is present in wherein to allow flame 14, and can not be blown out by fair speed potential in the outer eddy region 24.Thereby through using swirler 22, flame 14 is stabilized in the recirculation zone 26 and near the recirculation zone 26.
Swirler 22 can also be configured to produce one or more second recirculation zone 29.As shown in the figure, swirler 22 provides sudden change in the flow region (i.e. " constructional surface (dump plane) ") of its periphery.This characteristic has just produced second recirculation zone 29 in swirler 22 downstream.Thereby zone 29 can or replace recirculation zone 26 with recirculation zone 26 and be used to promote the flame holding in the zone 29.
Be configured to make waste gas to form eddy current to realize that swirl number per min falls within the scope of the invention arbitrarily swirler 22, said swirl number per min is illustrated in the vortex quantity that in air-flow, produces under the per unit length.For example, the swirl number per min between about 0.5 and about 2.0 can be particularly conducive to and promote the stable of flame 14.Swirl number per min between about 0.76 and about 1.1 can help promoting the stable of flame 14 most.
The swirl stabilization of flame 14 has a plurality of advantages.For example, when higher relatively waste gas flowrate occurring, it promotes the utilization of burner 12, otherwise higher relatively waste gas flowrate may flame blow-off 14.This is especially favourable to for example relatively large commerial vehicle vehicles such as (for example truck-tractor, buses), and these vehicles have relatively large motor (for example 12.7 liters of motors), can produce the waste gas of relatively large amount.In addition, the flame holding burner assembly that helps relative compact is provided is to be used for the space-saving application of needs.Burner 12 particularly, can reduce the diameter of burner 12, because can be handled higher relatively waste gas flowrate.In addition, can reduce the length of burner, because flame holding has produced short flame length.Thereby the burner 12 with swirler 22 is particularly useful in vent systems.
Through using 14 pairs of emission reduction devices of swirl-stabilized flame 18 to carry out heat management.Particularly, the waste gas that passes burner 12 is heated and advances to emission reduction device 18 by this with heat emission abatement devices 18.
Device 18 can adopt various ways.Exemplarily, device 18 can comprise oxidation catalyst (for example diesel oxidation catalyst), particulate filter (for example catalysis or uncatalyzed diesel particulate filter), SCR device and/or NOx trap.
According to an example, device 18 comprises oxidation catalyst and particulate filter.In this case, be positioned between burner 12 and the particulate filter oxidation catalyst fluid.Waste gas by swirl-stabilized flame 14 heating is heated to operating temperature (for example between about 250 ℃ and about 300 ℃) with oxidation catalyst.Oxidation catalyst is incorporated into the fuel in the waste gas at burner 12 places or in the position oxidation that separates with burner 12 then.The heat particulate filter that is produced by the exothermic reaction at oxidation catalyst place is with the particulate matter of burn off by its collection, thereby regenerate particulate filters is further to use.Use the swirl-stabilized flame regenerate particulate filters and need also not fall in the scope of the present invention by means of oxidation catalyst.
At device 18 is under the situation of SCR device, and swirl-stabilized flame 14 is used for promoting SCR device setting up in its operating temperature range.Under the situation of NOx trap, swirl-stabilized flame 14 can be used to improve the temperature of NOx trap, is beneficial to the desulfidation of NOx trap.In addition, burner 12 can with U. S. Patent the 6th, 871, No. 489 vent systems is used together, incorporates the disclosure of this patent into this paper at this with way of reference.
With reference to Fig. 2 and 3, wherein show the illustrative embodiments of burner 12.Particularly, wherein show fuel burner 112, said fuel burner 112 carries out heat management as the burner 12 in the equipment 10 with the emission reduction device 18 to arbitrary form.Burner 112 comprises a plurality of swirlers that are arranged in exhaust steam passage 120; Said exhaust steam passage 120 parts are limited on the shell 118 of burner 112; So that the waste gas that flows to emission reduction device 18 from motor 16 forms eddy current; So that make the flame holding in the passage 120, even when waste gas flowrate is higher relatively.
Burner 112 comprises ignite part 130 and major component 132.The part of igniting 130 produces swirl stabilization pilot flame 134, is used to light swirl stabilization master's flame 136 of major component 132.In case light main flame 136, can close the part 130 of igniting to extinguish pilot flame 134, the part of perhaps igniting 130 can continue operation.
The part of igniting 130 comprises swirl-stabilized pilot fuel dispenser 138 (also referring to Fig. 4).Distributor 138 extends through the hole that is formed in the first swirler 122a, makes swirler 122a circumferentially around distributor 138.Swirler 122a is fixed to an end of porose ignitron 142; And be configured to comprise the plate of a plurality of blades 144 that radially extend; Said blade 144 tilts, thereby makes the waste gas in the ignitron 142 form eddy current around burner axis 145 clockwise perhaps counterclockwise (orientation that depends on blade 144).Like this, the outer eddy region 24 of the eddy current waste gas of swirler 122a in ignitron 142 with outside the interior recirculation zone 26 of backflow waste gas in the eddy region 24.
Distributor 138 distributes into recirculation zone 26 with pilot fuel pipeline 148 supplied fuel, so that igniter 146 fire fuel through extending to recirculation zone 26.By this way, in ignitron 142, light pilot flame 134.In addition, because exhaust gas velocity is relatively low in ignitron recirculation zone 26, pilot flame 134 is stabilized in this zone 26.Can be used to keep the choke apparatus 150 of pilot flame 134 to be installed in the ignitron 142 further to be beneficial to the stable of pilot flame 134.
Second swirler 122b of the part of igniting 130 and shell 118 mate and are fixed to shell, thereby are installed in the passage 120.Ignitron 142 extends through the hole that is limited in the swirler 122b, make swirler 122b around ignitron 142, and ignitron 142 is fixed to swirler 122b.Thereby ignitron 142, swirler 122a and the distributor 138 that is fixed to ignitron 142 are installed in the passage 120.
For example, swirler 122b is configured to comprise the plate of the radially extended blade 153 of inclination, and said blade makes waste gas form eddy current around burner axis 145 along clockwise or counterclockwise (orientation that depends on blade 153) in the outside of ignitron 142.Like this, swirler 122b passes waste gas and is defined in the hole 154 in the ignitron 142, thereby the oxygen " supply " that will be present in the waste gas arrives pilot flame 134, to burn with pilot fuel.In addition, pass waste gas that hole 154 gets into ignitrons 142 because swirler 122b and on the internal surface of ignitron 142, form the cold layer 155 of roughly ringwise wall of waste gas.The cold layer 155 of this wall has been strengthened the serviceability of ignitron 142 by this as the thermal-protective coating between ignitron 142 and the pilot flame 134, and allows to use the cheap material that is used for leading pipe 142.The thickness of the cold layer 155 of wall can be about 1/8 inch.
Major component 132 just is positioned at the downstream of the part 130 of igniting.The main fuel dispenser 156 that is fixed to shell 118 is distributed to the major component 132 that is used to produce main flame 136 from primary fuel lines 122c reception fuel and with this fuel.
Major component 132 comprises the 3rd swirler 122c of the swirl stabilization that is used for main flame 136.For example, swirler 122c is configured to comprise the plate of the radially extended blade 159 of inclination, and said blade makes waste gas form eddy current around burner axis 145 along clockwise or counterclockwise (orientation that depends on blade 159) when waste gas passes swirler 122c.This is the outer eddy region 24 of the eddy current waste gas in the shell 118 of the downstream of swirler 122c generation major component 132 directly.The outer eddy region 24 of major component 132 produces the interior recirculation zone 26 of the backflow waste gas in the outer eddy region 24 of major component.Because the waste gas flow velocity in the major component recirculation zone 26 is relatively low, so main flame 136 is stabilized in the zone 26.The transition member 160 that is fixed to swirler 122c upstream side is beneficial to waste gas and passes swirler 122c.
Swirler 122c comprises along the constructional surface 162 of swirler 122c outer perimeter.Constructional surface 162 is to stop the atresia annular wall of waste gas from wherein flowing through, thereby directly produces radially exteenal reflux zone in the downstream of constructional surface 162, also is used for the flame holding in this zone.Omit constructional surface 162 and the outer perimeter that blade 159 extends to eddy current 122c is also fallen in the scope of the present invention.
Burner 112 can comprise quota of fuel part 164, is used for fuel is assigned in the waste gas that is heated, to use with the oxidation catalyst in downstream or other parts of emission reduction device 18.In this case, quota of fuel part 164 has the quota of fuel distributor 166 that is fixed to shell 118.Distributor 166 will be assigned to passage 120 a position between swirler 122c and the 4th swirler 122d through the quantitative fuel of quantitative burning line 168 supplies.For example; Swirler 122d is configured to comprise the plate of dihedral vane 172; When quantitative fuel and waste gas passed swirler 122d, blade 172 made quantitative fuel and waste gas form eddy current around burner axis 145 along clockwise or counterclockwise (orientation that depends on blade 172).Like this, when arriving emission reduction device 18 places, quantitatively fuel fully mixes with waste gas.From equipment 10, save quota of fuel part 164 fully; Perhaps comprise as the quota of fuel part 164 that is independent of the parts of burner 112; Make the quota of fuel part in downstream location certain position between burner 112 and emission reduction device 18 of burner 112, all fall in the scope of the present invention.
Be configured to make waste gas to form eddy current swirler 122a, 122b, 122c, 122d to realize that swirl number per min also falls in the scope of the present invention arbitrarily.For example, the swirl number per min between about 0.5 and about 2.0 can help promoting the flame holding of flame 134 and 136 especially.Swirl number per min between about 0.76 and 1.1 can help promoting this flame holding most.
With reference to Fig. 3, wherein show the control system 174 that is used to control burner 112 operations.Particularly; Control system 174 response is from the input of upstream oxygen sensor 176, upstream temperature sensor 178 and downstream temperature sensor 180 operation with control fuel and ignition module 182, the controling to burning line 148,122c, 168 supply of fuel and through the power supply of cable 184 to igniter 146 of lighting a fire of said fuel and ignition module 182.
The true dip direction of the blade 144,153,159,172 of swirler 122a, 122b, 122c, 122d can have various ways.For example, all blades of swirler 122a, 122b, 122c, 122d can be inclined to and make waste gas form eddy current around axis 145 along equidirectional.In other examples; The blade 144,153,159,172 of one or more swirler 122a, 122b, 122c, 122d can be inclined to and make waste gas form eddy current along clockwise direction, and the blade 144,153,159,172 of other swirler 122a, 122b, 122c, 122d can be inclined to and makes waste gas along counterclockwise forming eddy current.
The blade 144,153,159,172 of swirler 122a, 122b, 122c, 122d can have different gradient (be somebody's turn to do " gradient " and be the angle of inclination of blade) arbitrarily.For example, some blades of given swirler can have one or more gradients so that waste gas forms eddy current along clockwise direction, and some blades of same swirler can have one or more tilt angle so that waste gas forms eddy current along counter clockwise direction.Use this tilt angle to promote the mixing of waste gas.An example of this swirler is shown among Figure 15, will combine Figure 15 to discuss below.
The blade 144,153,159,172 of swirler 122a, 122b, 122c, 122d can be fixed in case with respect to shell 118 motions, perhaps can move with respect to shell 118 arbitrarily.Like this, the gradient of blade can be invariant or variable.
With reference to Fig. 5-7, wherein show as any one or more variable vortex device 222 among swirler 22,122a, 122b, 122c, the 122d.Swirler 222 has a plurality of blades 230 that radially extend, and blade 230 has variable-pitch.The gradient of blade 230 can be through being changed by recliner adjuster 232 by what control system 174 was operated.In this way, can change the swirl number per min relevant with exhaust flow.For example, thus can when burner cuts out, not tilt to reduce the back pressure on the motor related 16 by adjusting vane 230 with blade lean.In other example, the gradient that can respond the condition relevant with waste gas (for example flow rate, temperature and/or oxygen content) adjusting vane 230 is with the control flame holding.Therefore can correspondingly change the swirl number per min relevant with waste gas.
Blade 230 is installed in the fixed frame, so that can do pivot movement with respect to this fixed frame.As an example, blade 230 is fixed to the fixing outer installing ring 234 and the fixing interior hub 236 of installing around blade 230.Hub 236 is installed in the installing ring 234 through a plurality of (for example five) fixed installation bar 238.The upstream side that transition member 260 is fixed to hub 236 is beneficial to fluid through swirler 222.
Recliner adjuster 232 comprises driver element 240 and through driver element 240 exercisable connectors 242, thereby with the gradient of pivotable vanes 230 adjusting vanes 230.Driver element 240 can have motor (for example electric motor) and related reduction gearing, is used to make rotatable live axle 244 rotations.Connector 242 comprises and is fixed to the lever 246 of axle 244 to pivot when axle 244 rotation thereupon.This pivot movement of lever 246 moves back and forth connecting rod 248, so that rotatable ring 250 is around swirler axis 252 rotations of swirler 222.Ring 250 rotation makes related with each blade 230 and extends through axis of runner blade 256 pivots of the pivot 254 of installing ring 234 around blade 230.This pivotable motion of pivot 254 makes each blade 230 around the gradient of its axis of runner blade 256 rotations with the adjustment blade.In this way; Can realize the expectation swirl number per min related with waste gas; Under the situation of non-zero swirl number per min, promoting in pilot flame 134 and the main flame 136 one or two flame holding, and swirl number per min be zero or near zero situation under impel and reduce engine back pressure.
In addition, have at burner (the same) under the situation of a plurality of swirlers, can use this pitch adjustment to make air-flow form eddy current in opposite direction as burner 112.Particularly, the blade of one or more swirlers can be configured to make waste gas to form eddy current along a direction by regulator 232, and the blade of one or more other swirlers can be configured to make waste gas to form eddy current in opposite direction by regulator 232.
Utilize swirler 220 and recliner adjuster 232 to realize that any swirl number per min also falls within the scope of the invention.For example, the swirl number per min between about 0.5 and about 2.0 can be particularly conducive to the promotion flame holding.Swirl number per min between about 0.76 and 1.1 can help promoting flame holding most.
With reference to Fig. 8, be used for swirler 22,122a, 122b, 122c, 122d, 222 any blades 320 shown in it.The gradient of blade 320 between the outside taper 323 in the footpath of inside root 321 in the footpath of blade 320 and blade 320 along the length change of blade 320.As an example, blade 320 is around longitudinal axis 356 distortions of blade 320.The gradient of blade 320 thereby along the length change of blade 320 with the pressure drop on the balance blade 320, promotes flame holding, and the ability of reinforced blade, thereby has solved the thermal fatigue problem through balance blade load.Further; Air-flow on the blade 320 is roughly the same at the center and taper 323 places of blade 320; Therefore when each blade of swirler all is configured to be similar to blade 320, will on swirler, have produced consistent relatively air-flow, thereby strengthen mixing and thermal distribution.
With reference to Fig. 9, wherein show the swirler 422b that is used for substituting swirler 122b.This swirler is configured to make the part of waste gas to form eddy current, and other part of waste gas is guided towards a pair of fuel distributor 156.
With reference to Figure 10-12, wherein show swirler 422b.The swirl vane 423 of swirler 422b tilts with for example about 45 ° gradient 424, so that form eddy current through the waste gas of swirl vane 423.
The guide vane 425 of swirler 422b is in order to the waste gas to fuel distributor 156 guiding process guide vanes 425.Two pairs of guide vanes 425 are wherein arranged, and every pair all related with one of them fuel distributor 156.Every pair of guide vane 425 all tilts with for example about 60 ° gradient 427 toward each other, with towards the fuel distributor 156 that is associated direct exhaust axially.
With reference to Figure 13, wherein show swirler tube 451 around the nozzle 452 of fuel distributor 156.Waste gas is guided towards fuel distributor 156 by a pair of guide vane 425.These exhaust flows are crossed the hole 454 in the upstream side that is limited to swirler tube 451.The blade 456 of pipe 451 upstream side makes the waste gas that flows through hole 454 form eddy current, makes waste gas as through flowing through around the distributor axis 458 of fuel distributor 156 and around the injected fuel spray 460 of discharging from nozzle 452 shown in the arrow 462.In this way, injected fuel spray 460 is shielded from the waste gas that gets into, impel injected fuel spray 460 to advance in the main flame 136 and impel fuel gasification.But also reduced the bump of injected fuel spray 460 on swirler 122c and ignitron 142.In addition, the eddy current waste gas of pipe in 451 also swirl stabilization nozzle 452.
Choke apparatus 450 is fixed to pipe 451 far-end and from managing 451 remote extension.As an example, device 450 is shaped as roughly half spoonful of shape.For example install 450 flame retainers as pilot flame 134 and/or main flame 136, stable with further booster flame.
Each swirler 22,122a, 122b, 122c, 222,422b or its combination provide and have been used to make waste gas to form the device of eddy current; Thereby the stable flame 14,134 and/or 136 that is produced by burner 12 or 112 in exhaust steam passage 20 or 120 is so that carry out heat management to emission reduction device 18.
Though in the description of accompanying drawing and front, specified principle of the present invention; But this explanation and description should be regarded as exemplary in essence; Rather than it is restrictive; Be interpreted as only illustrating and having described illustrative mode of execution, and all changes and modification that expectation falls in the spirit of the present invention can both be protected.
Principle of the present invention has a plurality of advantages, and this is that various characteristics because of system described herein obtain.The alternate embodiments that should be pointed out that each system of the present invention all needn't comprise the characteristic that all have been described, but still can benefit from least some advantages of this category feature.Those of ordinary skills can easily design their a system implementation mode, and these mode of executions have combined the present invention to disclose one or more characteristics, and fall in the spirit and scope of the present invention that are defined by the following claims.

Claims (19)

1. one kind is carried out the method for heat management to emission reduction device, comprises the steps:
Under the situation of not using the afterburning air, in the waste gas of Reciprocating engine or Wankel engine, produce flame,
When said motor moves on idling, make said waste gas form eddy current, and
Stablize the said flame in the said waste gas by the said step that forms eddy current,
Wherein:
The step of said formation eddy current comprises:
(i) the outer eddy region of generation eddy current waste gas, and
(ii) outside said, produce the interior recirculation zone of backflow waste gas in the eddy region, and
Said stabilizing step comprises the said flame of stablizing in the said interior recirculation zone.
2. the method for claim 1, wherein:
Said generation step comprises the generation pilot flame, and
Said stabilizing step comprises by the said step that forms eddy current stablizes said pilot flame.
3. method as claimed in claim 2, wherein:
Said generation step comprises the main flame that generation is lighted by said pilot flame, and
Said stabilizing step comprises by the said step that forms eddy current stablizes said main flame.
4. the method for claim 1, wherein:
Said generation step comprises the main flame that generation is ignited by pilot flame, and
Said stabilizing step comprises by the said step that forms eddy current stablizes said main flame.
5. the method for claim 1, wherein:
Said generation step is included in and produces pilot flame in the porose ignitron, and
The step of said formation eddy current comprises that the swirler of using around said ignitron makes waste gas form eddy current; Thereby the hole that waste gas is passed be formed in the said ignitron gets into said ignitron, also comprises with said passing waste gas that the hole that is formed in the said ignitron gets into said ignitron forms the cold layer of wall of waste gas on the internal surface of said ignitron step.
6. the method for claim 1, the step of wherein said formation eddy current comprises the swirl number per min that changes said waste gas.
7. the method for claim 1, the step of wherein said formation eddy current comprise makes waste gas form eddy current around axis along opposite direction.
8. the method for claim 1; Further comprise: utilize blade adjacent one another are and that tilt toward each other to the fuel distributor direct exhaust; And make waste gas form eddy current around the fuel that distributes by said fuel distributor to the guiding of said fuel distributor, wherein said generation step comprises: burning by the said fuel of said fuel distributor distribution to produce main flame.
9. the method for claim 1 comprises that further the flame that utilizes said swirl stabilization carries out heat management to emission reduction device.
10. one kind is carried out the equipment of heat management to emission reduction device, comprising:
Reciprocating engine or Wankel engine,
On fluid, be communicated to the exhaust steam passage of said motor, and
Fuel burner; Said fuel burner is positioned at said exhaust steam passage; And said fuel burner comprises first swirler; Said first swirler is configured to when said motor moves on idling, make the waste gas of said motor to form eddy current, thereby in said exhaust steam passage, stablizes the flame that under the situation of not using the afterburning air, is produced by said burner.
11. equipment as claimed in claim 10, wherein:
Said burner comprises the part of igniting that is configured to produce pilot flame, and
The said part of igniting comprises pilot fuel dispenser and said first swirler, and said first swirler is located around said pilot fuel dispenser, is used to stablize said pilot flame.
12. equipment as claimed in claim 10, wherein:
Said burner comprises ignite part and major component,
The said section construction of igniting becomes to produce pilot flame, and said major component is configured to produce the main flame of being lighted by said pilot flame, and
Said major component comprises said first swirler that is used to stablize said main flame.
13. equipment as claimed in claim 10, wherein:
Said burner comprises ignite part and major component,
The said section construction of igniting becomes to produce pilot flame, and said major component is configured to produce the main flame that is ignited by said pilot flame,
The said part of igniting comprises: (i) pilot fuel dispenser; (ii) said first swirler, it is circumferentially located around said pilot fuel dispenser, is used to stablize said pilot flame; (iii) porose ignitron, it is configured to receive said pilot flame; And (iv) second swirler, it is circumferentially located around said porose ignitron, is used to make waste gas to form eddy current impelling waste gas to pass to be limited to the hole in the said porose ignitron, and
Said major component comprises: (i) main fuel dispenser, and it is used to distribute is at least lighted to produce the fuel of said main flame by said pilot flame when beginning; And (ii) the 3rd swirler, it is configured to make waste gas to form eddy current, thereby stablizes the said main flame in the said exhaust steam passage.
14. equipment as claimed in claim 13 further comprises particulate filter and the oxidation catalyst that is used to heat said particulate filter, wherein:
Have the quota of fuel part, it is used for fuel is introduced the said exhaust steam passage at the said oxidation catalyst upper reaches, promoting the effect of said oxidation catalyst,
Said quota of fuel part comprised as parts of said burner, thus perhaps and said burner independent of the position of downstream location between said burner and said oxidation catalyst of said burner, and
Said quota of fuel partly comprises quota of fuel distributor and the 4th swirler, thus the fuel that said the 4th swirler is configured to make waste gas to form the eddy current mix waste gas and distributed by said quota of fuel distributor.
15. equipment as claimed in claim 10, wherein said first swirler comprises at least one blade.
16. equipment as claimed in claim 15 further comprises recliner adjuster, it is fixed to said first swirler to regulate the gradient of said at least one blade.
17. becoming, equipment as claimed in claim 16, wherein said at least one blade-shaped make the said gradient of said at least one blade change along the length of said at least one blade.
18. equipment as claimed in claim 10 further comprises emission reduction device, wherein said burner is oriented to through the flame that utilizes said swirl stabilization said emission reduction device carried out heat management.
19. one kind is carried out the method for heat management to emission reduction device, comprises the steps:
Under the situation of not using the afterburning air, in the waste gas of Reciprocating engine or Wankel engine, produce pilot flame and main flame,
, said motor make said waste gas form eddy current when moving on idling around axis, and
Stablize said pilot flame and said main flame in the said waste gas by the said step that forms eddy current,
Wherein:
The step of said formation eddy current comprises:
(i) the outer eddy region of generation eddy current waste gas, and
(ii) outside said, produce the interior recirculation zone of backflow waste gas in the eddy region, and
Said stabilizing step comprises said pilot flame and the said main flame of stablizing in the said interior recirculation zone.
CN2006800209631A 2005-06-15 2006-06-09 Swirl-stabilized burner for thermal management of exhaust system and associated method Expired - Fee Related CN101501308B (en)

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US20060283181A1 (en) 2006-12-21

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