WO2005012702A1 - エンジンの排気浄化装置 - Google Patents
エンジンの排気浄化装置 Download PDFInfo
- Publication number
- WO2005012702A1 WO2005012702A1 PCT/JP2004/010487 JP2004010487W WO2005012702A1 WO 2005012702 A1 WO2005012702 A1 WO 2005012702A1 JP 2004010487 W JP2004010487 W JP 2004010487W WO 2005012702 A1 WO2005012702 A1 WO 2005012702A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reducing agent
- nozzle
- exhaust gas
- air
- compressed air
- 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
Links
Classifications
-
- 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
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
- F01N3/2066—Selective catalytic reduction [SCR]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9495—Controlling the catalytic process
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/08—Adding substances to exhaust gases with prior mixing of the substances with a gas, e.g. air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/08—Parameters used for exhaust control or diagnosing said parameters being related to the engine
-
- 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
Definitions
- the present invention relates to an engine exhaust purification device (hereinafter referred to as “exhaust gas purification device”) that reduces and purifies nitrogen oxides (NOx) in exhaust gas using a liquid reducing agent,
- exhaust gas purification device that reduces and purifies nitrogen oxides (NOx) in exhaust gas using a liquid reducing agent
- the present invention relates to technology for suppressing reduction purification.
- Patent Document 1 As an exhaust gas purifying device for removing NOx contained in engine exhaust gas, an exhaust gas purifying device disclosed in Japanese Patent Application Laid-Open No. 2000-27627 (Patent Document 1) has been proposed. A powerful exhaust gas purification system converts NOx into harmless nitrogen (N), oxygen ( ⁇ ), etc. in an oxygen-rich atmosphere.
- a NOx reduction catalyst is provided in the gin exhaust passage.
- a configuration is adopted in which a required amount of liquid reducing agent according to the operating state of the engine is injected from a nozzle upstream of the NOx reduction catalyst to improve the NOx purification efficiency of the N ⁇ x reduction catalyst.
- Patent Document 1 JP-A-2000-27627
- the present invention prevents clogging inside the nozzle by supplying high-pressure air to the inside of the nozzle when the injection supply of the liquid reducing agent is stopped. It is another object of the present invention to provide an exhaust gas purifying apparatus which suppresses a reduction in purification of NOx due to a short supply of a liquid reducing agent. Means for solving the problem
- the nitrogen oxide reducing catalyst provided in the engine exhaust passage for reducing and purifying the nitrogen oxides in the exhaust gas by using the liquid reducing agent;
- a reducing agent injection and supply device for injecting and supplying a liquid reducing agent into the exhaust passage from the nozzle hole of the nozzle; and when the injection flow rate of the liquid reducing agent by the reducing agent injection and supply device becomes zero, And a high-pressure air supply device for supplying high-pressure air to the inside for a predetermined time.
- the present invention when the injection flow rate of the liquid reducing agent injected and supplied from the injection hole of the nozzle into the engine exhaust passage becomes zero, high-pressure air is supplied to the inside of the nozzle for a predetermined time. For this reason, when the injection supply of the liquid reducing agent is stopped, even if the liquid reducing agent remains inside the nozzle, the liquid reducing agent is forcibly discharged to the exhaust passage by the high-pressure air. Therefore, even if the temperature of the horn is high due to the exhaust heat, it is possible to prevent clogging of the horn which prevents moisture from evaporating from the liquid reducing agent remaining inside and depositing the reducing agent component. Further, since the clogging of the noise is prevented, it is possible to prevent the nitrogen oxide reduction catalyst from being released into the atmosphere without being sufficiently reduced and purified without running out of the liquid reducing agent in the nitrogen oxide reduction catalyst.
- FIG. 1 is a configuration diagram of a first embodiment of an exhaust gas purification device according to the present invention.
- FIG. 2 is a configuration diagram of a second embodiment of the exhaust gas purification device according to the present invention.
- FIG. 3 is a configuration diagram of an exhaust gas purification device according to a third embodiment of the present invention.
- FIG. 4 is a configuration diagram of a fourth embodiment of the exhaust gas purification device according to the present invention.
- FIG. 1 shows an overall configuration of a first embodiment of an exhaust gas purification apparatus according to the present invention.
- An exhaust pipe 2 that constitutes an exhaust passage of the engine 1 is provided with an NOx reduction catalyst 3 that reduces and purifies NOx in exhaust gas.
- the N ⁇ x reduction catalyst 3 is composed of, for example, a zeolite-based active component supported on a monolithic catalyst support having a honeycomb-shaped cross-section made of ceramic cordierite or Fe--Cr--Al-based heat-resistant steel. Make up the configuration.
- the catalyst component supported on the catalyst carrier is activated by receiving a liquid reducing agent such as an aqueous urea solution, gasoline, light oil, or alcohol, and effectively converts NOx into harmless substances.
- a nozzle 4 for supplying a liquid reducing agent from a nozzle hole opened in the exhaust pipe 2 is provided upstream of the exhaust of the NOx reduction catalyst 3.
- the air reservoir tank 5 stores compressed air pressurized to 700-100 kPa.
- the compressed air stored in the air reservoir tank 5 is supplied to the reducing agent adding device 8 through the electromagnetic on-off valve 6 which is a normally closed valve and the pressure reducing valve 7 (pressure reducing device) in this order.
- the air reservoir tank 5 may be shared with an air reservoir tank provided for another use.
- the liquid reducing agent stored in the reducing agent tank 9 is supplied to the reducing agent addition device 8.
- the reducing agent adding device 8 adds a liquid reducing agent to the compressed air by operating a built-in pump to form a spray state, and then supplies the compressed air to the nozzle 4.
- the addition flow rate of the liquid reducing agent that is, the injection flow rate of the liquid reducing agent is arbitrarily variable by controlling the operation of the pump.
- the inside of the reducing agent addition device 8 is connected so that the supplied compressed air can always be supplied to the nozzle 4.
- the compressed air stored in the air reservoir tank 5 branches off after passing through the electromagnetic on-off valve 6, and is supplied to the purge air tank 11 via the check valve 10. Therefore, compressed air having substantially the same pressure as that of the air reservoir tank 5 is stored in the purge air tank 11.
- the check valve 10 is arranged in a direction to prevent the compressed air from flowing backward from the purge air tank 11 to the downstream of the electromagnetic on-off valve 6. Then, the compressed air stored in the purge air tank 11 is supplied to the reducing agent adding device 8 via the electromagnetic on-off valve 12 which is a normally closed valve.
- the engine 1 is provided with an operation state detection sensor 13 (operation state detection device) that detects the rotation speed and the load.
- operation state detection sensor 13 operation state detection device
- the intake flow rate, intake negative pressure, throttle opening, accelerator opening, fuel injection amount, supercharging pressure, and the like can be used as the engine load.
- the control unit 14 with a built-in computer inputs the rotation speed and load from the operation state detection sensor 13 and reads the ROM (Read
- the operation of the pump, the solenoid on-off valve 6 and the solenoid on-off valve 12 built in the reducing agent adding device 8 is controlled by the control program stored in the Only Memory).
- the air reservoir tank 5, the electromagnetic on-off valve 6, the pressure reducing valve 7, the reducing agent adding device 8, the reducing agent tank 9, and the control unit 14 constitute a reducing agent injection supply device. Further, a high-pressure air supply device is constituted by the purging air tank 11, the electromagnetic on-off valve 12, and the control unit 14.
- the control unit 14 reads the rotation speed and load from the operation state detection sensor 13 and Calculate the flow rate of liquid reducing agent required to reduce and purify N ⁇ x in exhaust gas.
- the control unit 14 opens the electromagnetic on-off valve 6 and operates the pump incorporated in the reducing agent adding device 8 according to the added flow rate. Control.
- the compressed air stored in the air reservoir tank 5 is reduced to a predetermined pressure by the pressure reducing valve 7 and supplied to the reducing agent addition device 8 to reduce the NOx in the exhaust gas.
- the agent is mixed with the decompressed compressed air to be in a spray state, and is injected and supplied from the nozzle 4 into the exhaust pipe 2. Then, the liquid reducing agent injected and supplied from the nozzle 4 is supplied to the NOx reduction catalyst 3 while being mixed with the exhaust gas, and the NOx in the exhaust gas is reduced and purified in the NOx reducing catalyst 3.
- the control unit 14 closes the electromagnetic opening / closing valve 6 and stops the operation of the pump incorporated in the reducing agent addition device 8. Then, the injection supply of the liquid reducing agent into the exhaust pipe 2 is stopped. Thereafter, the control unit 14 supplies the compressed air stored in the purge air tank 11 to the reducing agent adding device 8 by opening the electromagnetic on-off valve 12 for a predetermined time, and the compressed air is supplied from the nozzle 4 nozzle hole. Is injected into the exhaust pipe 2. For this reason, when the injection of the liquid reducing agent is stopped, even if the liquid reducing agent remains inside the nozzle 4, it is forcibly discharged into the exhaust pipe 2 by the compressed air.
- the deposition and adhesion of the liquid reducing agent component inside 4 is suppressed. Therefore, clogging hardly occurs inside the nozzle 4 and the injection supply of the liquid reducing agent is secured, so that the supply of the liquid reducing agent to the N ⁇ x reduction catalyst 3 is insufficient.NOx is sufficiently reduced. Release to the atmosphere without purification is suppressed. Further, since the liquid reducing agent is injected and supplied from the nozzle 4 in a spray state, the liquid reducing agent is supplied to the NOx reduction catalyst 3 substantially uniformly, and the reduction and purification of N ⁇ x can be performed efficiently.
- the pressure of the compressed air stored in the air tank 11 decreases due to the consumption of the compressed air stored in the purge air tank 11, when the electromagnetic on-off valve 6 is opened, the compressed air stored in the air reservoir tank 5 is checked. It is automatically supplied to the purging air tank 11 through 10. For this reason, the compressed air in the purging air tank 11 is kept within a predetermined range.
- FIG. 2 shows the overall configuration of a second embodiment of the exhaust gas purification apparatus according to the present invention. Note that The same components as those of the first embodiment will be denoted by the same reference numerals and symbols, and the description thereof will be omitted (the same applies hereinafter).
- a configuration is employed in which compressed air is supplied to the purging air tank 11 by the air compressor 20 that pressurizes the atmosphere to a predetermined pressure. At this time, for example
- the operation of the air conditioner press 20 is controlled so that the pressure of the compressed air stored in the purge air tank 11 falls within a predetermined range according to the output from the pressure switch attached to the purge air tank 11.
- the compressed air at an arbitrary pressure can be supplied to the purging air tank 11 by the air compressor 20 irrespective of the pressure of the compressed air stored in the air reservoir tank 5. Therefore, if the supply pressure of the compressed air by the air compressor 20 is set to a pressure at which the liquid reducing agent remaining inside the nozzle 4 can be forcibly discharged, clogging of the nozzle 4 can be effectively prevented. .
- FIG. 3 shows the overall configuration of a third embodiment of the exhaust gas purification apparatus according to the present invention.
- the compressed air stored in the reservoir tank 5 is passed as it is, or the pressure is reduced to a predetermined pressure.
- a configuration is adopted in which a pressure reducing valve 30 capable of switching between passing and passing is provided, and the switching is controlled by the control unit 14.
- the control unit 14 When injecting and supplying the liquid reducing agent, the control unit 14 opens the electromagnetic on-off valve 6 and controls switching of the pressure reducing valve 30 so as to reduce the pressure of the compressed air. Further, the control unit 14 controls the pressure reducing valve 30 so as to open the electromagnetic on-off valve 6 and to allow the compressed air to pass as it is for a predetermined time after the injection of the liquid reducing agent is stopped. Therefore, the compressed air stored in the air reservoir tank 5 is decompressed and supplied to the reducing agent adding device 8 when the liquid reducing agent is injected and supplied, while the liquid reducing agent injection stopping force is maintained for a predetermined time. Is supplied to the reducing agent addition device 8 as it is.
- compressed air and high-pressure air can be arbitrarily supplied from the air reservoir tank 5, so that the number of solenoid on-off valves is reduced and the purge air tank is reduced as compared with the first and second embodiments.
- a check valve becomes unnecessary.
- the number of parts can be reduced through the use of common parts, and the structure becomes simple, which reduces the space and cost. S power
- FIG. 4 shows the overall configuration of a fourth embodiment of the exhaust gas purification apparatus according to the present invention.
- a configuration is employed in which the liquid reducing agent is injected and supplied by pressurizing the liquid reducing agent by the reducing agent adding device 40 without using compressed air when the liquid reducing agent is injected and supplied.
- the powerful configuration it is not necessary to supply compressed air from the air reservoir tank to the reducing agent addition device as in the first to third embodiments, so that the number of solenoid on-off valves is small.
- a pressure reducing valve is not required, so that space and cost can be reduced.
- compressed air for adding a reducing agent is not required, the size of the air reservoir tank provided for other uses does not increase.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04747873.0A EP1655463B1 (en) | 2003-07-30 | 2004-07-23 | Exhaust gas purification apparatus of engine |
| US10/566,367 US7571599B2 (en) | 2003-07-30 | 2004-07-23 | Exhaust gas purification apparatus of engine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003282359A JP4152833B2 (ja) | 2003-07-30 | 2003-07-30 | エンジンの排気浄化装置 |
| JP2003-282359 | 2003-07-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2005012702A1 true WO2005012702A1 (ja) | 2005-02-10 |
Family
ID=34113775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2004/010487 Ceased WO2005012702A1 (ja) | 2003-07-30 | 2004-07-23 | エンジンの排気浄化装置 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7571599B2 (ja) |
| EP (1) | EP1655463B1 (ja) |
| JP (1) | JP4152833B2 (ja) |
| CN (1) | CN100432385C (ja) |
| WO (1) | WO2005012702A1 (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006084569A1 (de) * | 2005-02-11 | 2006-08-17 | Daimlerchrysler Ag | Zugabevorrichtung zur zugabe von reduktionsmittel in eine abgasleitung einer brennkraftmaschine |
| US20090211237A1 (en) * | 2006-02-08 | 2009-08-27 | Micael Blomquist | Injection Device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2005105970A (ja) * | 2003-09-30 | 2005-04-21 | Nissan Diesel Motor Co Ltd | エンジンの排気浄化装置 |
| JP4592504B2 (ja) * | 2005-06-09 | 2010-12-01 | 三菱ふそうトラック・バス株式会社 | 排気浄化装置 |
| WO2007008121A1 (en) * | 2005-07-07 | 2007-01-18 | Volvo Lastvagnar Ab | Method, device and computer program product for diagnosing of at least one exhaust emission control unit |
| JP4650241B2 (ja) * | 2005-11-30 | 2011-03-16 | トヨタ自動車株式会社 | 内燃機関の排気システム |
| JP4684150B2 (ja) * | 2006-03-30 | 2011-05-18 | 三菱ふそうトラック・バス株式会社 | エア回路の制御装置 |
| US20080034733A1 (en) * | 2006-08-14 | 2008-02-14 | Miller Robert L | Fuel supply component purging system |
| US8499739B2 (en) | 2006-08-31 | 2013-08-06 | Caterpillar Inc. | Injector having tangentially oriented purge line |
| EP2080889A4 (en) * | 2006-11-09 | 2011-02-09 | Nissan Diesel Motor Co | AMBIENT AIR TEMPERATURE SENSOR AND EXHAUST PURIFICATION APPARATUS |
| US8006482B2 (en) * | 2007-03-02 | 2011-08-30 | Caterpillar Inc. | Method of purging fluid injector by heating |
| US8215100B2 (en) | 2007-03-02 | 2012-07-10 | Caterpillar Inc. | Regeneration device having external check valve |
| US7874148B2 (en) * | 2007-03-15 | 2011-01-25 | Deere & Company | Regeneration system and method for particulate traps |
| JP4174685B1 (ja) * | 2007-05-31 | 2008-11-05 | 三菱自動車工業株式会社 | 内燃機関の排気浄化装置 |
| US7958721B2 (en) | 2007-06-29 | 2011-06-14 | Caterpillar Inc. | Regeneration system having integral purge and ignition device |
| US8281570B2 (en) * | 2007-08-09 | 2012-10-09 | Caterpillar Inc. | Reducing agent injector having purge heater |
| WO2009081228A1 (en) * | 2007-12-21 | 2009-07-02 | Renault Trucks | Apparatus and method for injection of a fluid for an exhaust gases treatment device |
| US20100154387A1 (en) * | 2008-12-19 | 2010-06-24 | Toyota Jidosha Kabushiki Kaisha | Abnormality detection device for reductant addition valve |
| DE102009014831A1 (de) * | 2009-03-25 | 2010-09-30 | Daimler Ag | Verfahren zum Betreiben eines Reduktionsmittelversorgungssystems |
| SE536318C2 (sv) | 2010-06-21 | 2013-08-20 | Scania Cv Ab | Förfarande och anordning för att avlägsna reduktionsmedel ur en doseringsenhet vid ett SCR-system |
| SE536316C2 (sv) * | 2010-06-21 | 2013-08-20 | Scania Cv Ab | Förfarande och anordning för att avlägsna bränsle ur en doseringsenhet vid ett HC-doseringssystem |
| SE537642C2 (sv) * | 2010-06-21 | 2015-09-08 | Scania Cv Ab | Förfarande och anordning vid kylning av en doseringsenhet för reduktionsmedel |
| US9145817B2 (en) * | 2010-11-08 | 2015-09-29 | Bosch Corporation | Reducing agent injection valve abnormality detection unit and reducing agent supply apparatus |
| JP5586446B2 (ja) * | 2010-12-16 | 2014-09-10 | Udトラックス株式会社 | エンジンの排気管噴射装置 |
| JP5906637B2 (ja) * | 2011-09-28 | 2016-04-20 | いすゞ自動車株式会社 | 異物除去方法及び選択還元触媒システム |
| JP6094974B2 (ja) * | 2012-02-22 | 2017-03-15 | パナソニックIpマネジメント株式会社 | 植物栽培システム |
| CN103291421B (zh) | 2012-02-23 | 2016-06-08 | 天纳克(苏州)排放系统有限公司 | 空气辅助式还原剂计量喷射系统 |
| WO2014143851A1 (en) * | 2013-03-15 | 2014-09-18 | Cummins Ip, Inc. | Pump purge for urea dosing system |
| JP6151980B2 (ja) * | 2013-06-17 | 2017-06-21 | 株式会社荏原製作所 | 粉体排出システム |
| US10473014B2 (en) * | 2013-12-23 | 2019-11-12 | Baohua Qi | Low pressure atomizing injector |
| SE540367C2 (sv) * | 2014-06-12 | 2018-08-14 | Scania Cv Ab | System och metod för evakuering av fluid i rörledningar i ett fordon |
| US11585253B2 (en) | 2015-08-07 | 2023-02-21 | Cummins Emission Solutions Inc. | Converging liquid reductant injector nozzle in selective catalytic reduction systems |
| KR102466782B1 (ko) * | 2016-05-27 | 2022-11-16 | 에이치에스디엔진 주식회사 | 환원제 공급 시스템 |
| CN108479347B (zh) * | 2018-04-13 | 2020-05-05 | 宁波清智环保科技有限公司 | 环保气体净化装置 |
| DE112019007644T5 (de) * | 2019-08-22 | 2022-05-19 | Cummins Emission Solutions Inc. | Systeme und Verfahren zum Erzeugen von Ammoniak |
| JP7696286B2 (ja) * | 2021-12-14 | 2025-06-20 | ヤンマーホールディングス株式会社 | 還元剤供給装置 |
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- 2003-07-30 JP JP2003282359A patent/JP4152833B2/ja not_active Expired - Lifetime
-
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- 2004-07-23 EP EP04747873.0A patent/EP1655463B1/en not_active Expired - Lifetime
- 2004-07-23 CN CNB2004800217588A patent/CN100432385C/zh not_active Expired - Lifetime
- 2004-07-23 WO PCT/JP2004/010487 patent/WO2005012702A1/ja not_active Ceased
- 2004-07-23 US US10/566,367 patent/US7571599B2/en not_active Expired - Lifetime
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006084569A1 (de) * | 2005-02-11 | 2006-08-17 | Daimlerchrysler Ag | Zugabevorrichtung zur zugabe von reduktionsmittel in eine abgasleitung einer brennkraftmaschine |
| US20090211237A1 (en) * | 2006-02-08 | 2009-08-27 | Micael Blomquist | Injection Device |
| US8356473B2 (en) * | 2006-02-08 | 2013-01-22 | Stt Emtec Ab | Injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1655463A4 (en) | 2009-12-23 |
| CN100432385C (zh) | 2008-11-12 |
| CN1839252A (zh) | 2006-09-27 |
| US20070186542A1 (en) | 2007-08-16 |
| EP1655463B1 (en) | 2016-07-06 |
| EP1655463A1 (en) | 2006-05-10 |
| JP2005048677A (ja) | 2005-02-24 |
| US7571599B2 (en) | 2009-08-11 |
| JP4152833B2 (ja) | 2008-09-17 |
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