WO2014050375A1 - バーナー - Google Patents

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Publication number
WO2014050375A1
WO2014050375A1 PCT/JP2013/072298 JP2013072298W WO2014050375A1 WO 2014050375 A1 WO2014050375 A1 WO 2014050375A1 JP 2013072298 W JP2013072298 W JP 2013072298W WO 2014050375 A1 WO2014050375 A1 WO 2014050375A1
Authority
WO
WIPO (PCT)
Prior art keywords
partition wall
air
combustion
ignition
fuel mixture
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2013/072298
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
亮 澁谷
一郎 津曲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hino Motors Ltd filed Critical Hino Motors Ltd
Priority to CN201380011330.4A priority Critical patent/CN104136846A/zh
Priority to EP13841189.7A priority patent/EP2843307A4/en
Priority to US14/381,510 priority patent/US20150211733A1/en
Publication of WO2014050375A1 publication Critical patent/WO2014050375A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/406—Flame stabilising means, e.g. flame holders
    • 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
    • F01N3/08—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
    • F01N3/30—Arrangements for supply of additional air
    • F01N3/32—Arrangements for supply of additional air using air pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/002—Combustion apparatus characterised by arrangements for air supply the air being submitted to a rotary or spinning motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/24—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/38—Nozzles; Cleaning devices therefor
    • F23D11/386—Nozzle cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/402—Mixing chambers downstream of the nozzle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/40—Mixing tubes; Burner heads
    • F23D11/404—Flame tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/44—Preheating devices; Vaporising devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details
    • F23D11/44—Preheating devices; Vaporising devices
    • F23D11/441—Vaporising devices incorporated with burners
    • F23D11/448—Vaporising devices incorporated with burners heated by electrical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00—Heating of air supplied for combustion
    • F23L15/04—Arrangements of recuperators
    • 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
    • F01N2490/00—Structure, disposition or shape of gas-chambers
    • F01N2490/08—Two or more expansion chambers in series separated by apertured walls only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03005—Burners with an internal combustion chamber, e.g. for obtaining an increased heat release, a high speed jet flame or being used for starting the combustion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/06041—Staged supply of oxidant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2207/00—Ignition devices associated with burner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2208/00—Control devices associated with burners
    • F23D2208/10—Sensing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2209/00—Safety arrangements
    • F23D2209/10—Flame flashback
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/00002—Cleaning burner parts, e.g. burner tips
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the technology of the present disclosure relates to a burner including a partition wall that partitions a mixing chamber and a combustion chamber.
  • an exhaust gas purification device for purifying exhaust gas is disposed in an exhaust passage of a diesel engine.
  • a diesel particulate filter DPF: Diesel Particulate Filter
  • PM particulates
  • Such a regeneration process is performed by the operation of a burner disposed in front of the DPF.
  • the burner supplies the combustion gas generated in the combustion chamber of the burner to the exhaust passage during the regeneration process. And the exhaust gas heated by the combustion gas flows into the DPF, so that the particulates captured by the DPF are incinerated (for example, see Patent Document 1).
  • a premixing system that supplies a mixture of fuel and air to the combustion chamber is used.
  • a burner is known.
  • the premixing type burner the premixing chamber and the combustion chamber are partitioned by a partition wall, and the air-fuel mixture generated in the premixing chamber is sent to the combustion chamber through a plurality of communication passages formed in the partition wall. Inflow.
  • the technology of the present disclosure is intended to provide a burner that can suppress a decrease in the ignitability of the air-fuel mixture.
  • One aspect of the burner according to the present disclosure includes a partition wall that partitions a mixing chamber that generates an air-fuel mixture and a combustion chamber that burns the air-fuel mixture, and is formed in the partition wall, and communicates the mixing chamber and the combustion chamber.
  • a plurality of communication passages and a heating section for heating the partition wall are provided.
  • the partition wall is heated by the heating unit, the deposits attached to the partition wall are easily removed from the partition wall as compared with a configuration in which the partition wall is not heated. Therefore, a decrease in the ignitability of the air-fuel mixture due to deposits adhering to the partition wall can be suppressed.
  • Another aspect of the burner according to the present disclosure includes: a combustion cylinder in which a discharge port from which combustion gas that burns the air-fuel mixture is formed is formed at a tip thereof; and a first cylinder that extends in the combustion cylinder toward the discharge port.
  • a second inner cylinder part which is connected to the second inner cylinder part whose opening near the ejection port is closed, the inner side surface of the combustion cylinder and the outer side surface of the first inner cylinder part;
  • the annular partition wall connected to the connecting wall portion that closes the gap between the combustion cylinder and the first inner cylinder portion, and the inner surface of the combustion cylinder and the outer surface of the second inner cylinder portion And an ignition part that is disposed on the ejection port side with respect to the partition wall and ignites the air-fuel mixture.
  • the internal space of the combustion cylinder is partitioned into a mixing chamber and a combustion chamber by the partition wall and the second cylinder portion whose opening on the ejection port side is closed.
  • the schematic block diagram which shows schematic structure of the diesel engine by which the burner of 1st Embodiment in the technique of this indication is mounted.
  • Sectional drawing which shows schematic structure of the burner of 1st Embodiment.
  • the front view which shows the front structure of the partition wall in the burner of FIG.
  • the functional block diagram which shows the electric constitution of the control apparatus in the burner of FIG. 6 is a flowchart showing a processing procedure of reproduction processing according to the first embodiment.
  • Sectional drawing which shows schematic structure of the burner of 2nd Embodiment.
  • the front view which shows the front structure of the partition wall in the burner of FIG.
  • the front view which shows the front structure of the partition wall in a modification.
  • the cylinder block 11 of the diesel engine 10 is formed with six cylinders 11a arranged in a line, and an intake manifold 12 for supplying intake air to each cylinder 11a, and each cylinder 11a.
  • the exhaust manifold 16 into which the exhaust gas flows in is connected.
  • An air cleaner 14 is attached to an upstream end of an intake pipe 13 that is a passage for intake air attached to the intake manifold 12, and a compressor 15 of a turbocharger TC is attached in the middle of the intake pipe 13. .
  • the exhaust manifold 16 is connected to an EGR pipe 17 and an exhaust pipe 18 that is a component of the exhaust passage.
  • the EGR pipe 17 connects the intake pipe 13 and the exhaust manifold 16 to cause the exhaust to flow into the intake pipe 13.
  • a turbine 19 connected to the above-described compressor 15 is connected to the upstream side of the exhaust pipe 18.
  • an exhaust gas purification device 20 for purifying exhaust gas is mounted on the downstream side of the exhaust pipe 18.
  • the exhaust purification device 20 includes a diesel particulate filter 21 (hereinafter referred to as a DPF 21) that adsorbs particulates contained in the exhaust.
  • the DPF 21 has a honeycomb structure formed of, for example, porous silicon carbide, and captures particulates in the exhaust gas on the inner wall surface of the columnar body constituting the honeycomb structure.
  • a burner 40 that performs a regeneration process of the DPF 21 by increasing the temperature of the exhaust gas flowing into the DPF 21 is mounted in the front stage of the DPF 21.
  • the burner 40 is connected to an air supply pipe 25 that is connected downstream of the compressor 15 in the intake pipe 13 and supplies air to the burner 40.
  • An air valve 27 is attached in the middle of the air supply pipe 25. When the air valve 27 is in an open state, a part of the intake air of the intake pipe 13 is supplied to the burner 40 as combustion air. Is done.
  • the engine 10 is provided with various sensors for acquiring information related to the operating state of the engine 10.
  • an upstream side exhaust flow rate sensor 31 detects an upstream exhaust flow rate Qep1 which is a mass flow rate of exhaust flowing upstream of the DPF 21.
  • the upstream side exhaust pressure sensor 32 detects an upstream side exhaust pressure Pep1 which is the pressure of the exhaust gas flowing upstream of the DPF 21.
  • the upstream side exhaust temperature sensor 33 detects an upstream side exhaust temperature Tep1, which is the temperature of the exhaust flowing through the upstream side of the DPF 21.
  • a DPF temperature sensor 34 that detects a DPF temperature Td that is the temperature of the DPF 21 is attached to the DPF 21.
  • a downstream exhaust pressure sensor 35 that detects a downstream exhaust pressure Pep2 that is the pressure of the exhaust gas that has passed through the exhaust purification device 20 is attached to the exhaust pipe 18 downstream of the DPF 21.
  • An intake air amount sensor 36 that detects an intake air amount Qa that is a mass flow rate of the intake air flowing through the intake pipe 13 is attached to the intake pipe 13 upstream of the compressor 15.
  • an air flow sensor 37 that detects an air flow quantity Qad that is a mass flow rate of combustion air that flows through the air supply pipe 25, and fuel that flows through the air supply pipe 25
  • An air temperature sensor 38 that detects an air temperature Tad that is the temperature of the working air is attached.
  • the burner 40 includes a cylindrical first tube portion 41 (hereinafter simply referred to as a tube portion 41) and a second tube portion 42 (hereinafter referred to as a tube portion 41) having an inner diameter larger than that of the tube portion 41.
  • a double cylinder structure consisting simply of the cylinder part 42) is formed.
  • the base ends of the cylindrical portions 41 and 42 are fixed to a substrate 43 that closes the openings of the base ends.
  • An annular closing plate 44 that closes the gap between the tubular portion 41 and the tubular portion 42 is fixed to the distal ends of the tubular portions 41 and 42.
  • a substantially annular ejection plate 45 is connected to the closing plate 44, and an ejection port 46 is formed at the center of the ejection plate 45.
  • a partition wall 49 that partitions the internal space of the cylinder part 41 into a premixing chamber 47 and a combustion chamber 48 is attached to the cylinder part 41.
  • the partition wall 49 is a perforated plate having a disk shape, and an outer edge 49 c of the partition wall 49 is joined to the inner peripheral surface of the cylindrical portion 41.
  • a plurality of communication passages 50 communicating with the premixing chamber 47 and the combustion chamber 48 pass through the partition wall 49 in the thickness direction of the partition wall 49.
  • the partition wall 49 has a metal mesh 51 covering the opening of each communication passage 50 on the surface 49 a facing the combustion chamber 48. The mesh 51 suppresses backfire from the combustion chamber 48 to the premixing chamber 47.
  • the air supply pipe 25 described above is connected to the outer peripheral surface of the cylindrical portion 42 at a position near the tip with respect to the partition wall 49. Combustion air from the air supply pipe 25 flows into an air introduction chamber 52 that is a gap between the cylindrical portion 41 and the cylindrical portion 42.
  • a plurality of first introduction holes 53 are formed in the circumferential wall of the cylindrical portion 41 and at a position near the base end with respect to the partition wall 49 over the entire circumferential direction. The plurality of first introduction holes 53 are formed so as to penetrate the peripheral wall of the cylindrical portion 41, and communicate the air introduction chamber 52 and the premixing chamber 47.
  • a plurality of second introduction holes 54 are formed in the circumferential wall of the cylindrical portion 41 and at a position near the tip with respect to the partition wall 49 over the entire circumferential direction.
  • the plurality of second introduction holes 54 are formed so as to penetrate the peripheral wall of the cylindrical portion 41, and communicate the air introduction chamber 52 and the combustion chamber 48. That is, when the air valve 27 is in the open state, a part of the intake air flowing through the intake pipe 13 is supplied to the premixing chamber 47 through the air supply pipe 25, the air introduction chamber 52, and the first introduction hole 53, and The air supply pipe 25, the air introduction chamber 52, and the second introduction hole 54 are supplied to the combustion chamber 48.
  • an injection nozzle 56 into which fuel is sent from the fuel supply unit 55 is fixed to the central portion of the substrate 43.
  • the injection port of the injection nozzle 56 is disposed in the premixing chamber 47.
  • the fuel supply unit 55 includes a fuel pump, a fuel valve, and a heater (not shown). The fuel flowing by opening the fuel valve is vaporized by the heater, and the vaporized fuel is sent to the injection nozzle 56.
  • the fuel sent to the injection nozzle 56 is injected from the injection port of the injection nozzle 56 into the premixing chamber 47.
  • an air-fuel mixture is generated by mixing the fuel injected from the injection nozzle 56 and the combustion air introduced through the first introduction hole 53.
  • an ignition portion 58 of the spark plug 57 is disposed in the combustion chamber 48 at a position near the partition wall 49 with respect to the position where the second introduction hole 54 is formed.
  • the air-fuel mixture described above flows into the combustion chamber 48 through the communication passage 50 of the partition wall 49 and is then ignited by the ignition unit 58.
  • combustion gas that is the air-fuel mixture after combustion is generated.
  • the generated combustion gas flows into the exhaust pipe 18 through the ejection port 46.
  • a heating part 59 is attached to a surface 49b of the partition wall 49 opposite to the ejection port 46 by a fixture (not shown).
  • the heating unit 59 is a linear resistance heating element that is electrically insulated from the partition wall 49 and is used at a temperature at which particulates contained in the exhaust can be incinerated, for example, higher than about 600 ° C. It is a possible heating element.
  • the base ends of the electrical wiring 60 for supplying electric power to the heating unit 59 are respectively connected to both ends of the heating unit 59 (see FIG. 3).
  • the electrical wiring 60 is electrically insulated from the cylindrical portion 41 and the substrate 43 by the covering material, and is routed around the premixing chamber 47 toward the substrate 43.
  • the terminal block 61 is fixed to the substrate 43.
  • the terminal block 61 is inserted through a wiring passage 67 formed through the substrate 43.
  • a gap between the terminal block 61 and the wiring passage 67 is sealed by a seal member (not shown).
  • the terminal block 61 includes an indoor terminal 63 disposed in the premixing chamber 47 and an outdoor terminal 64 disposed outside the premixing chamber 47.
  • a connection terminal 60A provided at the tip of the electrical wiring 60 is connected to the indoor terminal 63 of the terminal block 61, and an electrical wiring 65 connected to the power supply device 66 is connected to the outdoor terminal 64 of the terminal block 61. Is done.
  • the terminal block 61 and the electric wiring 65 are provided separately for each of the electric wirings 60 joined to both ends of the heating unit 59.
  • FIG. 3 is a front view showing the front structure of the partition wall 49 in the first embodiment, and is a front view showing the front structure of the partition wall 49 viewed from the premixing chamber 47 side.
  • the ignition plug 57 and the ignition part 58 indicated by a two-dot chain line indicate the positions of the ignition plug 57 and the ignition part 58 in the front view of the partition wall 49, respectively.
  • the heating unit 59 is symmetrical with respect to the vertical direction in a front view facing the surface 49 b facing the premixing chamber 47, and avoids the opening of the communication passage 50. And attached to the surface 49b.
  • a region 68 surrounded by a two-dot chain line is a first portion closer to the ignition portion 58 than the outer edge 49 c of the partition wall 49 in a front view of the partition wall 49.
  • a region 69 sandwiched between the outer edge 49 c of the partition wall 49 and the two-dot chain line is a second portion closer to the outer edge of the partition wall 49 than the ignition portion 58 in the front view of the partition wall 49.
  • Both ends of the heating unit 59 are disposed at positions close to the outer edge 49c of the partition wall 49.
  • One end of the heating unit 59 is disposed in a region 69 on the lower left side of the partition wall 49, and the other end of the heating unit 59 is disposed in a region 69 on the lower right side of the partition wall 49.
  • the heating unit 59 extends from the both ends toward the center of the partition wall 49 and is disposed in the region 68 so as to bypass the center of the partition wall 49, and in the axial direction of the cylinder unit 41 (of the partition wall 49. It passes through a position overlapping the ignition part 58 (in front view).
  • the burner control unit 70 (hereinafter simply referred to as the control unit 70) supplies fuel to the burner 40 by the fuel supply unit 55, ignition by the ignition plug 57, opening and closing of the air valve 27, and heating to the heating unit 59 by the power supply device 66. Control power supply.
  • the control unit 70 includes a CPU, a ROM in which various control programs and various data are stored, a RAM in which various calculation results and various data are temporarily stored, and the like, and is based on each control program stored in the ROM.
  • the temperature rise of the exhaust gas by the burner 40 will be described by taking as an example a regeneration process that is a process of incinerating fine particles adhering to the DPF 21.
  • the control unit 70 detects a detection signal indicating the upstream exhaust flow rate Qep1 from the upstream exhaust flow rate sensor 31, a detection signal indicating the upstream exhaust pressure Pep1 from the upstream exhaust pressure sensor 32, and the upstream A detection signal indicating the upstream exhaust temperature Tep1 is input from the side exhaust temperature sensor 33 at a predetermined control cycle. Further, the control unit 70 obtains the detection signal indicating the DPF temperature Td from the DPF temperature sensor 34, the detection signal indicating the downstream exhaust pressure Pep2 from the downstream exhaust pressure sensor 35, and the intake air amount Qa from the intake air amount sensor 36. The detection signal shown is input at a predetermined control cycle. In addition, the control unit 70 inputs a detection signal indicating the air flow rate Qad from the air flow rate sensor 37 and a detection signal indicating the air temperature Tad from the air temperature sensor 38 at a predetermined control cycle.
  • the control unit 70 calculates the accumulation amount M of fine particles in the DPF 21 based on the differential pressure ⁇ P between the upstream exhaust pressure Pep1 and the downstream exhaust pressure Pep2 and the upstream exhaust flow rate Qep1.
  • the control unit 70 starts the regeneration process of the DPF 21 on the condition that the calculated accumulation amount M becomes higher than a preset threshold value ⁇ .
  • control unit 70 has a threshold value ⁇ (which can be determined that the fine particles accumulated in the DPF 21 are sufficiently incinerated when the accumulation amount M of the fine particles calculated during the regeneration process is a preset threshold value. When the value is lower than ⁇ ), the reproduction process is terminated.
  • the power control unit 71 of the control unit 70 outputs a start signal for starting power supply to the heating unit 59 to the power supply device 66.
  • the power supply device 66 to which the start signal is input supplies predetermined power to the heating unit 59. Further, the power control unit 71 outputs a stop signal for stopping the power supply to the heating unit 59 when the deposition amount M of the fine particles calculated during the regeneration process is lower than the threshold value ⁇ . Output.
  • the power supply device 66 stops the power supply to the heating unit 59 in response to the stop signal.
  • the timer unit 72 of the control unit 70 starts counting with the output of the start signal and resets the count value with the output of the stop signal.
  • the control unit 70 starts driving the fuel supply unit 55, the air valve 27, and the spark plug 57.
  • the completion value Cf is a value estimated that the incineration of the fine particles adhering to the partition wall 49 and the mesh 51 is completed by the heating by the heating unit 59.
  • the fuel supply control unit 73 of the control unit 70 is based on the upstream exhaust flow rate Qep1, the upstream exhaust temperature Tep1, the air flow rate Qad, the air temperature Tad, the DPF temperature Td, and the target temperature of the DPF 21. From this, the fuel injection amount Qf per unit time injected into the combustion chamber 48 is calculated.
  • the fuel injection amount Qf is a fuel amount necessary for raising the temperature of the exhaust gas flowing into the DPF 21 to raise the temperature of the DPF 21 to the target temperature.
  • the fuel supply control unit 73 outputs a control signal to the fuel supply unit 55 so that the calculated fuel injection amount Qf is injected from the injection nozzle 56.
  • the fuel supply unit 55 to which the control signal is input drives a fuel valve and a heater according to the control signal, and injects fuel from the injection nozzle 56.
  • the air valve control unit 74 of the control unit 70 calculates an air supply amount Qs that is an air amount corresponding to the fuel injection amount Qf.
  • the amount of air corresponding to the fuel injection amount Qf is the amount of air per unit time necessary to burn the fuel corresponding to the fuel injection amount Qf.
  • the air valve control unit 74 sets the opening degree of the air valve 27 necessary for supplying air to the burner 40 by the amount of the air supply amount Qs.
  • a valve opening signal that is a control signal is output to the air valve 27.
  • the air valve 27 to which the valve opening signal is input is controlled to an opening degree corresponding to the valve opening signal.
  • the air valve control unit 74 is a control signal for causing the air valve 27 to close the air valve 27 when the accumulation amount M of the particulates calculated during the regeneration process is lower than the threshold value ⁇ .
  • a valve closing signal is output. Thereby, in the air supply pipe 25, the inflow of the intake air from the intake pipe 13 is blocked.
  • the spark plug controller 75 of the controller 70 outputs a control signal for driving the spark plug 57 to the spark plug 57.
  • the spark plug 57 to which the control signal is input generates a spark near the ignition unit 58.
  • the control unit 70 starts the regeneration process on the condition that the accumulation amount M becomes higher than the threshold value ⁇ .
  • step S ⁇ b> 11 the control unit 70 starts heating the partition wall 49 by outputting a start signal to the power supply device 66 and supplying power to the heating unit 59, and a timer.
  • the counting by the unit 72 is started.
  • step S12 the control unit 70 repeatedly determines whether or not the count value C of the timer unit 72 exceeds the completion value Cf.
  • step S12 YES
  • the control unit 70 Control proceeds to the next step S13.
  • step S13 the control unit 70 acquires the upstream exhaust flow rate Qep1, the upstream exhaust temperature Tep1, the air flow rate Qad, the air temperature Tad, the intake air amount Qa, and the DPF temperature Td from each sensor.
  • step S14 the control unit 70 calculates the fuel injection amount Qf and the air supply amount Qs corresponding to the fuel injection amount Qf.
  • the control unit 70 outputs a control signal for injecting fuel into the premixing chamber 47 by the fuel injection amount Qf to the fuel supply unit 55, and drives the fuel supply unit 55.
  • the control unit 70 supplies a control signal for introducing combustion air to the air introduction chamber 52 by the amount of the air supply amount Qs to the air valve 27 based on the intake air amount Qa and the air supply amount Qs.
  • the air valve 27 is driven.
  • the control unit 70 outputs a control signal for driving the spark plug 57 to the spark plug 57 to drive the spark plug 57.
  • the air-fuel mixture generated in the premixing chamber 47 is ignited by the spark plug 57 in the combustion chamber 48.
  • the combustion gas generated in the combustion chamber 48 mixes with the exhaust flowing through the exhaust pipe 18 to raise the temperature of the exhaust flowing into the DPF 21.
  • the heated exhaust gas flows into the DPF 21 so that the fine particles adhering to the DPF 21 are incinerated.
  • control unit 70 controls the upstream exhaust pressure sensor 32 to the upstream exhaust pressure Pep1, the downstream exhaust pressure sensor 35 to the downstream exhaust pressure Pep2, and the upstream exhaust flow rate sensor 31 to the upstream exhaust flow rate Qep1. Get a new.
  • the control unit 70 calculates a differential pressure ⁇ P between the upstream exhaust pressure Pep1 and the downstream exhaust pressure Pep2, and based on the differential pressure ⁇ P and the upstream exhaust flow rate Qep1, the accumulation amount in the DPF 21 M is calculated. Then, in the next step S18, the control unit 70 determines whether or not the accumulation amount M is equal to or less than the threshold value ⁇ .
  • step S18: NO When the accumulation amount M exceeds the threshold value ⁇ (step S18: NO), the control unit 70 repeatedly executes the processing from step S13 to step S18. On the other hand, when the accumulation amount M is equal to or less than the threshold value ⁇ (step S18: YES), the control unit 70 outputs an end signal to the power supply device 66 and supplies power to the heating unit 59 in the next step S19. While stopping, the count value C of the timer part 72 is reset. In addition, the control unit 70 outputs a stop signal for the fuel supply unit 55, a valve close signal for the air valve 27, and a stop signal for the spark plug 57, and ends the regeneration process.
  • the partition wall 49 and the mesh 51 are heated to a temperature at which the fine particles can be incinerated by being heated by the heating unit 59, and the fine particles adhering to the partition walls 49 and the mesh 51 are incinerated. . That is, the communication path 50 that is at least partially blocked by the fine particles is opened. Thereby, the distribution of the air-fuel mixture flowing from the premixing chamber 47 into the combustion chamber 48 is made uniform, and the flow velocity of the air-fuel mixture is also suppressed.
  • the air-fuel mixture is supplied to the vicinity of the ignition unit 58 with a high probability, and misfire due to the flow velocity of the air-fuel mixture is suppressed. Therefore, the air-fuel mixture becomes less susceptible to the influence of the fine particles adhering to the partition wall 49, so that a decrease in the ignitability of the air-fuel mixture can be suppressed.
  • the heating unit 59 is in contact with the region 68 that is the first portion and the region 69 that is the second portion, and in the axial direction of the cylindrical portion 41 (partition wall 49 (through a front view of 49) passes through a position overlapping the ignition portion 58. Therefore, for example, as compared with the case where the heating unit 59 is in contact with only the region 69, the temperature of the region 68 near the ignition unit 58 in the partition wall 49 is increased earlier. As a result, the fine particles adhering to a position close to the ignition unit 58 are easily incinerated, so that the air-fuel mixture is supplied around the ignition unit 58 with a high probability. Therefore, a decrease in the ignitability of the air-fuel mixture can be efficiently suppressed.
  • the heating unit 59 is in contact with both the region 68 as the first part and the region 69 as the second part. For this reason, the temperature of the entire partition wall 49 can be increased earlier than when the heating unit 59 is in contact with only the region 68 or the region 69. As a result, since the fine particles are incinerated in the entire partition wall 49, the deterioration of the ignitability of the air-fuel mixture is further suppressed.
  • the heating unit 59 is attached to a surface 49 b on the premixing chamber 47 side with respect to the partition wall 49. Therefore, compared with the case where the heating unit 59 is attached to the surface 49a on the combustion chamber 48 side, the thermal restriction required for the heating unit 59 is reduced, and the electric power joined to the heating unit 59 is reduced. The thermal restriction required for the wiring 60 is also reduced. In addition, the processing load for manufacturing the partition wall 49 is reduced as compared with the case where the heating unit 59 is built in the partition wall 49.
  • heating by the heating unit 59 is performed immediately before ignition by the ignition unit 58.
  • ignition by the ignition unit 58 is performed in a state where the temperature of the partition wall 49 is increased by the heating unit 59.
  • ignition by the ignition unit 58 is performed in a state where the amount of particulates attached to the partition wall 49 and the mesh 51 is small.
  • the air-fuel mixture passing through the communication passage 50 is heated by the partition wall 49. As a result, the ignitability of the air-fuel mixture is improved.
  • the heating unit 59 continues to heat the partition wall 49 until the amount M of fine particles accumulated in the DPF 21 becomes equal to or less than the threshold value ⁇ . That is, the partition wall 49 is maintained at a temperature at which the particulates can be incinerated even after the ignition by the ignition unit 58 is started and while the air-fuel mixture is being combusted in the combustion chamber 48. Therefore, the air-fuel mixture flowing into the combustion chamber 48 is heated by the partition wall 49 when passing through the communication passage 50. As a result, in addition to the ignitability of the air-fuel mixture, the combustibility of the air-fuel mixture is also improved.
  • the effects listed below can be obtained. (1) Since the fine particles adhering to the partition wall 49 and the mesh 51 are incinerated, the ignition of the air-fuel mixture is less affected by the fine particles adhering to the partition wall 49 and the mesh 51, and the ignitability of the air-fuel mixture is improved. .
  • the heating unit 59 is disposed in both the region 68 and the region 69 that is the second portion, the temperature of the entire partition wall 49 can be increased at an early stage. As a result, the deterioration of the ignitability of the air-fuel mixture is further suppressed as compared with the case where only one of the region 68 and the region 69 is directly heated.
  • the heating unit 59 is attached to the surface 49b on the premixing chamber 47 side, the thermal restriction required for the heating unit 59 and the electrical wiring 60 joined to the heating unit 59 is reduced. The Further, the processing load for manufacturing the partition wall 49 is reduced.
  • Heating by the heating unit 59 is performed immediately before ignition by the ignition unit 58.
  • the air-fuel mixture is ignited with a small amount of fine particles adhering to the partition wall 49 and the mesh 51, and the air-fuel mixture passing through the communication passage 50 is heated by the partition wall 49.
  • the ignitability of the air-fuel mixture is improved.
  • the heating unit 59 continues to heat the partition wall 49 until the amount M of fine particles accumulated in the DPF 21 becomes equal to or less than the threshold value ⁇ .
  • the ignitability of the mixture is increased.
  • the combustibility of the air-fuel mixture is also improved.
  • the first cylinder portion 41 corresponds to the combustion cylinder in the claims.
  • a cylindrical third cylindrical portion 78 (hereinafter simply referred to as “cylindrical third cylindrical portion 78”) is formed on the inner peripheral surface of the cylindrical portion 41 through an annular connecting wall portion 77 in a plan view from the direction along the axial direction of the cylindrical portion 41.
  • the cylinder portion 78 is connected.
  • the cylinder part 78 is corresponded to the 1st inner cylinder part in a claim.
  • the outer peripheral edge of the connecting wall portion 77 is fixed at a position near the substrate 43 of the cylindrical portion 41, and closes the gap between the inner peripheral surface of the cylindrical portion 41 and the outer peripheral surface of the cylindrical portion 78.
  • the cylinder part 78 is connected to the connection wall part 77 in a state of being inserted into the insertion part 79 of the connection wall part 77, and an opening near the ejection port 46 is opened.
  • first introduction holes 53 are formed at predetermined intervals in the circumferential direction at a portion closer to the substrate 43 with respect to a connecting portion between the cylindrical portion 41 and the connecting wall portion 77.
  • the first introduction hole 53 burns from the air introduction chamber 52 to the first mixing chamber 91 (hereinafter simply referred to as the mixing chamber 91) that is a space surrounded by the substrate 43, the cylinder portion 41, and the connecting wall portion 77. It is a hole for introducing working air.
  • the first introduction hole 53 is formed by raising a part of the peripheral wall of the cylindrical portion 41 inward.
  • a cut and raised piece 80 is formed in the cylindrical portion 41 by the cut and raised portion. The cut-and-raised piece 80 guides the fuel air so that the combustion air flowing into the mixing chamber 91 from the air introduction chamber 52 swirls in the mixing chamber 91.
  • the cylindrical portion 78 forms a second mixing chamber 92 that is a space surrounded by the peripheral wall of the cylindrical portion 78.
  • a part of the cylindrical portion 78 is inserted into a cylindrical fourth cylindrical portion 81 (hereinafter simply referred to as the cylindrical portion 81).
  • the cylinder part 81 corresponds to the second inner cylinder part in the claims.
  • the cylindrical portion 81 protrudes from the cylindrical portion 78 toward the ejection port 46, and the opening of the protruding portion (the tip of the cylindrical portion 81) is closed by the closing plate 82.
  • the end opposite to the ejection port 46 (the base end of the cylinder part 81) is disposed closer to the ejection port 46 with respect to the connection part between the cylinder part 41 and the connection wall part 77.
  • the proximal end is fixed to the cylindrical portion 41 via an annular partition wall 49.
  • the inner edge of the partition wall 49 of the second embodiment is connected to the outer peripheral surface of the cylinder portion 81 over the entire periphery thereof, and the outer edge of the partition wall 49 is the entire periphery of the inner peripheral surface of the cylinder portion 41.
  • the partition wall 49 has a communication path 83 arranged on a small diameter circle and a communication path 84 arranged on a large diameter circle so that the centers of the openings are arranged on concentric circles having different diameters. Are formed (see FIG. 7).
  • a third mixing chamber 93 (hereinafter simply referred to as a mixing chamber 93) that is surrounded by the cylindrical portion 81 and the closing plate 82 and communicates with the mixing chamber 92 is located near the ejection port 46 with respect to the cylindrical portion 78. ) Is formed.
  • a fourth mixing chamber 94 (hereinafter simply referred to as a mixing chamber 94) communicating with the mixing chamber 93 is formed by the gap between the cylindrical portion 78 and the cylindrical portion 81.
  • a fifth mixing chamber 95 (hereinafter referred to as a space surrounded by the cylinder portion 41, the partition wall 49, and the connecting wall portion 77 and communicating with the mixing chamber 94). Simply referred to as a mixing chamber 95).
  • the premixing chamber 90 is formed by the mixing chambers 91, 92, 93, 94, and 95 described above.
  • a combustion chamber 96 is formed by the space between the cylinder part 41 and the cylinder part 81 and the space surrounded by the cylinder part 41 near the ejection port 46 with respect to the closing plate 82.
  • the premixing chamber 90 and the combustion chamber 96 are partitioned by a partition wall 49.
  • a heating unit 59 is attached to a surface 49b of the partition wall 49 opposite to the ejection port 46 by a fixture (not shown).
  • the base ends of the electrical wiring 60 for supplying electric power to the heating unit 59 are respectively connected to both ends of the heating unit 59.
  • the electrical wiring 60 is electrically insulated from the cylindrical portion 41 by a covering material.
  • a connection terminal 60 ⁇ / b> A disposed at the tip of each electric wiring 60 is connected to an indoor terminal of a terminal block 86 attached to the peripheral wall of the cylindrical portion 41.
  • An outdoor terminal of the terminal block 86 is disposed in the air introduction chamber 52, and an electrical wiring 87 is connected to the outdoor terminal.
  • the electrical wiring 87 is electrically insulated from the cylindrical portion 41 and the substrate 43 by a covering material.
  • the electrical wiring 87 is routed around the air introduction chamber 52 toward the substrate 43, and is connected to an indoor terminal of a terminal block 88 fixed to the substrate 43.
  • An electrical wiring 89 is connected to the outdoor terminal of the terminal block 88, and this electrical wiring 89 is connected to the power supply device 66.
  • the terminal blocks 86 and 88 and the electric wires 87 and 89 described above are provided separately for each of the electric wires 60 joined to both ends of the heating unit 59.
  • FIG. 7 is a front view showing the front structure of the partition wall 49 in the second embodiment, and is a front view showing the front structure of the partition wall 49 as viewed from the mixing chamber 95 side.
  • the heating unit 59 is attached to the surface 49 b so as to be symmetric with respect to the vertical direction in the front view facing the surface 49 b on the mixing chamber 95 side. Both ends of the heating unit 59 are disposed at positions close to the outer edge 49 c of the partition wall 49.
  • the heating part 59 extends from the both ends toward the center of the partition wall 49, and is then disposed between the communication path 83 and the communication path 84 along the circumferential direction of the partition wall 49.
  • the heating unit 59 passes through a position that overlaps the ignition unit 58 in the region 68 when the partition wall 49 is viewed from the front.
  • the same operations and effects as the burner 40 described in the first embodiment can be obtained.
  • the burner of the said 1st and 2nd embodiment can also be suitably changed and implemented as follows.
  • Heating by the heating unit 59 may be stopped at any timing as long as the count value C of the timer unit 72 reaches the completion value Cf. For example, it may be stopped when the count value C of the timer unit 72 reaches the completion value Cf, or may be stopped when the count value C of the timer unit 72 reaches a predetermined count value greater than the completion value Cf. May be.
  • the heating by the heating unit 59 may not be performed immediately before the ignition by the ignition unit 58, and may be performed periodically regardless of the timing at which the ignition by the ignition unit 58 is performed. Even in such a configuration, the probability that ignition by the ignition unit 58 is performed in a state where the amount of fine particles attached to the partition wall 49 is small as compared with a burner that is not heated by the heating unit 59.
  • the heating unit 59 may be disposed in the combustion chamber by being attached to the surface 49 a of the partition wall 49, or may be incorporated in the partition wall 49, or may be spaced from the partition wall 49. You may have. In short, what is necessary is just the structure by which a heating part is arrange
  • FIG. 1 is just the structure by which a heating part is arrange
  • the heating unit 59 may be attached to the partition wall 49 with the mesh 51 interposed between the heating unit 59 and the partition wall 49. According to such a configuration, the temperature of the mesh 51 is more easily raised than the partition wall 49, so that the fine particles attached to the mesh 51 are incinerated early.
  • the burners 40 and 76 may have a configuration in which the mesh 51 is omitted.
  • the heating unit 59 may be in contact with the first part and the second part, may be in contact with only the first part, or may be in contact with only the second part.
  • the temperature of the first portion may be the same as the temperature of the second portion, the temperature of the first portion may be higher than the temperature of the second portion, or the temperature of the first portion is the second portion. The temperature may be lower. In short, any configuration may be used as long as the partition wall 49 is heated.
  • the heating unit 59 has a star-like polygon extending over the entire circumference of the partition wall 49 in a front view facing the surface 49 b facing the premixing chamber 47. In the vicinity of the ignition part 58 in the front view of 49, the shape may overlap the ignition part 58. According to such a configuration, at the time of heating by the heating unit 59, a part having a low temperature or a part having a high temperature is unlikely to be locally generated in the partition wall 49. That is, it is possible to raise the temperature of the partition wall 49 while suppressing variations in temperature distribution.
  • the heating unit 59 preferably has a bilaterally symmetric shape about the vertical direction.
  • the partition wall 49 adheres to the partition wall 49 at a portion relatively close to the ignition portion 58. Since the change in the state of the air-fuel mixture caused by the adhered matter is particularly suppressed, a decrease in the ignitability of the air-fuel mixture can be efficiently suppressed.
  • a plurality of heating parts 59 may be attached to the partition wall 49.
  • the heating unit 59 may be attached to both the surface 49 a and the surface 49 b of the partition wall 49, or a plurality of heating units 59 may be attached to the surface 49 b of the partition wall 49.
  • the heating unit only needs to be attached to the partition wall so as not to overlap the opening of the communication path, and is not limited to a linear heating element but may be a planar heating element. Further, the heating element only needs to be a heating element that can be used at a temperature at which fine particles contained in the exhaust gas can be incinerated, for example, 600 ° C., and is not limited to a metal heating element such as a resistance heating element. Such a non-metallic heating element may be used.
  • the wiring for supplying power to the heating unit may be changed according to the design matters at that time.
  • the burner control unit 70 may be a single electronic control unit or may be composed of a plurality of electronic control units.
  • the temperature raising of the exhaust gas by the burners 40 and 76 is not limited to the regeneration process of the DPF 21, but may be applied to, for example, a catalyst temperature raising process for raising the temperature of the catalyst provided in the exhaust purification device.
  • the engine to which the burners 40 and 76 are applied may be a gasoline engine. Further, the burners 40 and 76 are not limited to the engine, and may be applied to, for example, a heater.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Environmental & Geological Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Spray-Type Burners (AREA)
PCT/JP2013/072298 2012-09-28 2013-08-21 バーナー Ceased WO2014050375A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201380011330.4A CN104136846A (zh) 2012-09-28 2013-08-21 燃烧器
EP13841189.7A EP2843307A4 (en) 2012-09-28 2013-08-21 BURNER
US14/381,510 US20150211733A1 (en) 2012-09-28 2013-08-21 Burner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012215528A JP5525021B2 (ja) 2012-09-28 2012-09-28 バーナー
JP2012-215528 2012-09-28

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WO2014050375A1 true WO2014050375A1 (ja) 2014-04-03

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EP (1) EP2843307A4 (https=)
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WO (1) WO2014050375A1 (https=)

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EP3479026A4 (en) * 2016-06-30 2020-07-15 INIRV Labs, Inc. AUTOMATIC SAFETY DEVICE AND METHOD FOR STOVE
DE102016113222A1 (de) * 2016-07-18 2018-01-18 Webasto SE Brenner und Fahrzeugheizgerät
US10844293B2 (en) * 2017-09-25 2020-11-24 Surefire Pilotless Burner Systems Llc Sparkless igniters for heater treaters and methods for using same
CN109488419A (zh) * 2019-01-16 2019-03-19 无锡威孚力达催化净化器有限责任公司 应用于dpf再生的燃烧器油气混合装置
DE102020100402B4 (de) * 2020-01-10 2021-07-22 Webasto SE Brenner, mobile Heizvorrichtung und Verfahren zum Herstellen eines Brenners
US11428438B2 (en) * 2020-04-28 2022-08-30 Rheem Manufacturing Company Carryover burners for fluid heating systems and methods thereof
US11885251B2 (en) * 2022-05-25 2024-01-30 Tenneco Automotive Operating Company Inc. Selective catalytic reduction catalyst pre-heating burner assembly and method of controlling burner emissions
DE102022213545A1 (de) * 2022-12-13 2024-06-13 Robert Bosch Gesellschaft mit beschränkter Haftung Luftzuführung zu einer Brennkraftmaschine und Verfahren und Vorrichtung zur Di-agnose einer Luftzuführung zu einer Brennkraftmaschine
DE102023202404A1 (de) * 2023-03-16 2024-09-19 Robert Bosch Gesellschaft mit beschränkter Haftung Verfahren und Vorrichtung zum Betreiben einer Brennkraftmaschine

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Publication number Publication date
US20150211733A1 (en) 2015-07-30
JP5525021B2 (ja) 2014-06-18
EP2843307A1 (en) 2015-03-04
JP2014070754A (ja) 2014-04-21
CN104136846A (zh) 2014-11-05
EP2843307A4 (en) 2015-09-16

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