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WO2007108169A1 - Dispositif de purification d'echappement pour moteur - Google Patents

Dispositif de purification d'echappement pour moteur Download PDF

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Publication number
WO2007108169A1
WO2007108169A1 PCT/JP2006/323283 JP2006323283W WO2007108169A1 WO 2007108169 A1 WO2007108169 A1 WO 2007108169A1 JP 2006323283 W JP2006323283 W JP 2006323283W WO 2007108169 A1 WO2007108169 A1 WO 2007108169A1
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust
engine
catalyst
liquid
reduction catalyst
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/JP2006/323283
Other languages
English (en)
Japanese (ja)
Inventor
Kiminobu Hirata
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.)
UD Trucks Corp
Original Assignee
UD Trucks Corp
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 UD Trucks Corp filed Critical UD Trucks Corp
Publication of WO2007108169A1 publication Critical patent/WO2007108169A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • 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
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • 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—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents using means for controlling, e.g. purging, the absorbents or adsorbents
    • 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

Definitions

  • the present invention relates to an exhaust purification device for an engine that reduces and purifies nitrogen oxide (NOx) in exhaust.
  • NOx nitrogen oxide
  • exhaust gas purifier relates to a technology for protecting the NOx reduction catalyst installed in the engine exhaust system.
  • Patent Document 1 An exhaust purification device described in Japanese Patent Application Laid-Open No. 2000-27627 (Patent Document 1) has been proposed as a catalyst purification system for removing NOx contained in engine exhaust.
  • Such an exhaust purification device injects and supplies a reducing agent or a precursor thereof to the upstream side of the NOx reduction catalyst disposed in the engine exhaust system in accordance with the operating state of the engine, thereby reducing NOx and the reducing agent in the exhaust.
  • a catalytic reduction reaction is performed to purify NOx into harmless components.
  • Patent Document 1 JP 2000-27627 A
  • DPF collects and removes PM in exhaust gas using a filter that also serves as a porous member
  • regeneration processing that incinerates the collected PM appropriately is indispensable.
  • PM oxidizes (combusts), raising the exhaust temperature downstream of the DPF exhaust, which could affect the NOx reduction catalyst as well as a fuel injection device failure.
  • the present invention provides a catalyst temperature of the NOx reduction catalyst.
  • a liquid reducing agent or its precursor, water or other liquid is injected upstream of the exhaust, and the exhaust temperature is reduced by using the heat of evaporation. It is an object of the present invention to provide an exhaust purification device that does not affect the heat.
  • an exhaust emission control device in an engine exhaust system, and a reduction catalyst that reduces and purifies nitrogen oxides in exhaust, a catalyst temperature sensor that detects a catalyst temperature of the reduction catalyst, A liquid ejecting apparatus that injects a liquid that lowers the exhaust temperature due to heat of evaporation upstream of the exhaust of the reduction catalyst, and the liquid ejecting apparatus when the catalyst temperature detected by the catalyst temperature sensor becomes higher than a predetermined value. And a control device for actuating. Further, a filter for collecting and removing particulate matter in the exhaust may be disposed upstream of the reduction catalyst.
  • the exhaust gas purification apparatus of the present invention when the exhaust temperature excessively rises for some reason, and the catalyst temperature of the reduction catalyst disposed in the engine exhaust system becomes higher than a predetermined value, the exhaust gas is purified. A liquid that lowers the exhaust temperature by the heat of evaporation is ejected upstream. For this reason, exhaust gas whose temperature has decreased is introduced into the reduction catalyst, and the catalyst temperature decreases, so that it is possible to prevent the reduction catalyst from being affected by heat.
  • FIG. 1 is a configuration diagram of a first embodiment of an exhaust emission control device according to the present invention.
  • FIG. 2 is a flowchart showing the processing contents of a control program.
  • FIG. 3 is a configuration diagram of a second embodiment of the exhaust purification apparatus according to the present invention.
  • FIG. 4 is a configuration diagram of a third embodiment of an exhaust purification apparatus according to the present invention. Explanation of symbols
  • FIG. 1 shows a first embodiment of an exhaust purification device that uses a urea aqueous solution as a precursor of a liquid reducing agent and purifies NOx contained in engine exhaust by a catalytic reduction reaction.
  • the exhaust pipe 14 connected to the exhaust manifold 12 of the engine 10 uses an injection nozzle 16 for supplying an aqueous urea solution along the exhaust flow direction and ammonia obtained by hydrolyzing the aqueous urea solution.
  • a NOx reduction catalyst 18 that reduces and purifies NOx and an ammonia acid catalyst 20 that acidifies the ammonia that has passed through the NOx reduction catalyst 18 are provided. It is. Further, the urea aqueous solution stored in the reducing agent tank 22 is supplied to the reducing agent addition device 26 through a supply pipe 24 having a suction opening at the bottom thereof.
  • the surplus urea solution supplied to the reducing agent addition device 26 that does not contribute to the injection is returned through a return pipe 28 having a return opening at the top of the reducing agent tank 22.
  • the reducing agent addition device 26 is electronically controlled by a reducing agent addition control unit (hereinafter referred to as “reducing agent addition EC Uj”) 30 with a built-in computer, and supplies a required amount of urea aqueous solution according to the engine operating state to compressed air.
  • the reducing agent adding device 26 supplies the required amount of aqueous urea solution according to the engine operating state to the injection nozzle 16 as it is. Adopt the supply configuration.
  • the urea aqueous solution injected and supplied from the injection nozzle 16 is hydrolyzed by exhaust heat and water vapor in the exhaust gas, and converted into ammonia.
  • the converted ammonia undergoes a reduction reaction with NOx in the exhaust gas in the NOx reduction catalyst 18, and water (H
  • ammonia that has passed through 18 is oxidized by the ammonia-acid catalyst 20 disposed downstream of the exhaust gas, so that ammonia is not discharged as it is.
  • an exhaust gas temperature sensor 32 that detects an exhaust gas temperature Tu upstream of the exhaust gas, and an exhaust gas downstream thereof
  • Exhaust temperature sensors 34 for detecting the exhaust gas temperature Td are respectively provided, and an output signal thereof is input to the reducing agent addition ECU 30.
  • the reducing agent added EC U30 is connected to an engine control unit (hereinafter referred to as “engine ECU”! 36 that electronically controls the engine 10 via a network such as CAN (Controller Area Network), and operates the engine.
  • the engine speed Ne and load Q can be read as conditions.
  • the engine ECU 36 also functions as an operating state detection device, and as the load Q, an intake air flow rate, an intake pressure, a boost pressure, a fuel injection amount, or the like can be used.
  • the reducing agent addition ECU 30 implements various functions related to exhaust purification by executing a control program stored in a ROM (Read Only Memory).
  • the reducing agent addition ECU 30 may function as a control device so that the control program is executed by another control unit.
  • at least the injection nozzle 16, the reducing agent tank 22, the supply pipe 24, the reducing agent addition apparatus 26 and the return pipe 28 constitute a liquid injection apparatus.
  • the rotational speed Ne and the load Q as the engine operating state may not be detected indirectly from the engine ECU 36, but may be directly detected by forces such as various known sensors. In this case, various sensors correspond to the operating state detection device.
  • FIG. 2 shows the processing contents of a control program that is repeatedly executed every predetermined time after the engine is started in the reducing agent addition ECU 30.
  • step 1 abbreviated as “S1” in the figure, the same applies hereinafter
  • the exhaust temperature sensors 32 and 34 read the exhaust temperatures Tu and Td upstream and downstream of the NOx reduction catalyst 18, respectively.
  • step 2 it is determined whether or not the exhaust gas temperature Tu upstream of the NOx reduction catalyst 18 is higher than a predetermined value.
  • the predetermined value is set to a temperature at which the NOx reduction catalyst 18 is not affected by heat, specifically, a temperature slightly lower than the heat resistance limit of the catalyst carrier or catalyst component. If the exhaust temperature Tu is higher than a predetermined value, the process proceeds to step 4 (Yes), while if the exhaust temperature Tu is equal to or lower than the predetermined value, the process proceeds to step 3 (No).
  • step 3 it is determined whether or not the exhaust gas temperature Td downstream of the NOx reduction catalyst 18 is higher than a predetermined value. If the exhaust gas temperature Td is higher than the predetermined value, the process proceeds to step 4 (Yes). On the other hand, if the exhaust gas temperature Td is equal to or lower than the predetermined value, the process is ended (No).
  • Step 4 the rotational speed Ne and the load Q as the engine operating state are read from the engine ECU 36, respectively.
  • step 5 with reference to the control map in which the reducing agent increment corresponding to the exhaust temperature, rotational speed and load is set, the reducing agent increment corresponding to the exhaust temperature Tu, rotational speed Ne and load Q is set. Is calculated.
  • step 6 the reducing agent is replaced with the urea aqueous solution necessary for reducing and purifying NOx in the exhaust gas, and the urea aqueous solution increased by the amount of the reducing agent is injected and supplied from the injection nozzle 16.
  • the addition device 26 is controlled.
  • the increased amount of the reducing agent is added to the urea aqueous solution necessary for reducing and purifying NOx in the exhaust, and the reducing agent adding device 26 is controlled based on the added value.
  • a urea aqueous solution as a liquid that lowers the exhaust temperature by the heat of evaporation is injected and supplied. For this reason, the exhaust gas whose temperature has been lowered is introduced into the NOx reduction catalyst 18 and the catalyst temperature is lowered, so that it is possible to prevent the NOx reduction catalyst 18 from being affected by heat.
  • the urea aqueous solution necessary to reduce and purify NOx in the exhaust gas is secured, the basic performance as an exhaust gas purification device that reduces and purifies NOx can be exhibited.
  • the liquid that lowers the exhaust temperature is an increase in the amount of urea aqueous solution that is injected and supplied upstream of the NOx reduction catalyst 18, it can be handled only by changing the control logic without having to add a new liquid injection device. can do.
  • the catalyst temperature of the NOx reduction catalyst 18 can be determined by appropriately setting a control map for determining the increase amount of the reducing agent. Can be prevented from lowering below the catalyst activation temperature.
  • the urea aqueous solution as a liquid that lowers the exhaust temperature by the heat of evaporation is injected and supplied, so the NOx reduction catalyst 18 Although the entire amount passes without being consumed, it is oxidized by the ammonia oxidation catalyst 20 disposed downstream of the exhaust, so that there is no problem of ammonia being discharged.
  • FIG. 3 shows a second embodiment of the exhaust purification device. Note that the same components as those of the first embodiment are denoted by the same reference numerals in order to avoid redundant description (the same applies hereinafter).
  • PM in the exhaust gas is collected in the exhaust upstream of the NOx reduction catalyst 18, specifically, in the exhaust pipe 14 located upstream of the exhaust of the injection nozzle 16.
  • a DPF 38 is provided as a filter to be removed.
  • the DPF38 has a substantially cylindrical shape made of a porous member, and a number of cells that are substantially parallel to the exhaust flow are formed by a hermetic partition, and the inlet and outlet of each cell are alternately sealed with a sealing material. .
  • the exhaust gas passes through the partition wall and flows into the adjacent cell, the PM in the exhaust gas is collected and removed by the partition wall. It is.
  • FIG. 4 shows a third embodiment of the exhaust purification device.
  • water is used instead of the urea aqueous solution in the first embodiment as the liquid that lowers the exhaust temperature. That is, an injection nozzle 40 for injecting water into the exhaust pipe 14 is disposed upstream of the NOx reduction catalyst 18, specifically, between the injection nozzle 16 and the NOx reduction catalyst 18. Further, the water stored in the water tank 42 is supplied to the water adding device 46 through a supply pipe 44 having a suction opening at the bottom. On the other hand, surplus water that does not contribute to the injection of water supplied to the water addition device 46 is returned through a return pipe 48 having an opening at the top of the water tank 42. The water addition device 46 is electronically controlled by the reducing agent addition ECU 30.
  • at least the injection nozzle 40, the water tank 42, the supply pipe 44, the water addition apparatus 46, and the return pipe 48 constitute a liquid injection apparatus.
  • control content of the water addition device 46 by the ECU 30 is calculated by calculating the water injection amount instead of the reducing agent increase amount in step 5 in the flowchart of FIG. 2 showing the control content of the first embodiment.
  • the water addition device 46 may be controlled in accordance with the water injection amount.
  • the exhaust temperature decreases due to the heat of evaporation when water evaporates, and the same operations and effects as in the first embodiment can be achieved. Further, since the urea aqueous solution is not consumed as a liquid for lowering the exhaust temperature, the operation cost can be reduced. Furthermore, since the injection supply amount of the urea aqueous solution is not increased in order to lower the exhaust temperature, the amount of ammonia passing through the NOx reduction catalyst 18 becomes very small, and the ammonia-acid catalyst 20 is not essential. Reduction can also be achieved.
  • the NOx reduction catalyst 18 a catalyst that does not use a reducing agent or a solid reducing agent is used. There is something. In this case, since the exhaust temperature cannot be lowered by injecting the liquid reducing agent or its precursor, it is desirable to adopt the configuration as in this embodiment.
  • water may be injected instead of increasing the injection supply amount of the urea aqueous solution.
  • liquid reducing agent or the precursor thereof is not limited to the urea aqueous solution, and an ammonia aqueous solution or alcohol mainly composed of hydrocarbons can be used according to the NOx purification mechanism of the NOx reduction catalyst 18. .

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

Selon la présente invention, lorsque la température du catalyseur réduisant NOx disposé dans un tuyau d'échappement de moteur devient plus élevée qu'une valeur donnée, un liquide capable d'abaisser la température d'échappement par la chaleur d'évaporation est injecté de manière appropriée sur une position d'échappement en amont par rapport au catalyseur réduisant NOx. La valeur donnée ci-dessus se rapporte à une température n'ayant aucun impact défavorable sur le catalyseur réduisant NOx, en particulier, une température légèrement inférieure à la limite de résistance thermique du support ou des composants du catalyseur. En tant que liquide, on utilise un incrément d'agent réducteur liquide ou de précurseur de celui-ci alimenté dans le catalyseur réduisant NOx ou de l'eau.
PCT/JP2006/323283 2006-03-23 2006-11-22 Dispositif de purification d'echappement pour moteur Ceased WO2007108169A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-080174 2006-03-23
JP2006080174A JP2007255285A (ja) 2006-03-23 2006-03-23 エンジンの排気浄化装置

Publications (1)

Publication Number Publication Date
WO2007108169A1 true WO2007108169A1 (fr) 2007-09-27

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WO (1) WO2007108169A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010031869A (ja) * 2008-07-30 2010-02-12 General Electric Co <Ge> 選択触媒還元によるＮＯｘ制御のためのガスタービン燃焼排気ガス噴霧冷却
CN111173596A (zh) * 2019-12-20 2020-05-19 中国北方发动机研究所(天津) 一种内燃机用高温气体控制装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110102179A (zh) * 2019-05-06 2019-08-09 苏州仕净环保科技股份有限公司 Lcr液态催化剂脱硝工艺

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1172015A (ja) * 1997-06-18 1999-03-16 Toyota Motor Corp 内燃機関の排気浄化装置
JP2002502927A (ja) * 1998-02-06 2002-01-29 ジョンソン、マッセイ、パブリック、リミテッド、カンパニー 排ガス中のＮＯｘの還元機構
JP2003293740A (ja) * 2002-04-05 2003-10-15 Mitsubishi Fuso Truck & Bus Corp 内燃機関のＮＯｘ浄化装置
JP2003293736A (ja) * 2002-04-04 2003-10-15 Mitsubishi Fuso Truck & Bus Corp 内燃機関のＮＯｘ浄化装置
JP2004270565A (ja) * 2003-03-10 2004-09-30 Hino Motors Ltd ディーゼルエンジンの排ガス浄化システム

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10196433A (ja) * 1997-01-08 1998-07-28 Nissan Motor Co Ltd エンジンの制御装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1172015A (ja) * 1997-06-18 1999-03-16 Toyota Motor Corp 内燃機関の排気浄化装置
JP2002502927A (ja) * 1998-02-06 2002-01-29 ジョンソン、マッセイ、パブリック、リミテッド、カンパニー 排ガス中のＮＯｘの還元機構
JP2003293736A (ja) * 2002-04-04 2003-10-15 Mitsubishi Fuso Truck & Bus Corp 内燃機関のＮＯｘ浄化装置
JP2003293740A (ja) * 2002-04-05 2003-10-15 Mitsubishi Fuso Truck & Bus Corp 内燃機関のＮＯｘ浄化装置
JP2004270565A (ja) * 2003-03-10 2004-09-30 Hino Motors Ltd ディーゼルエンジンの排ガス浄化システム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010031869A (ja) * 2008-07-30 2010-02-12 General Electric Co <Ge> 選択触媒還元によるＮＯｘ制御のためのガスタービン燃焼排気ガス噴霧冷却
CN111173596A (zh) * 2019-12-20 2020-05-19 中国北方发动机研究所(天津) 一种内燃机用高温气体控制装置

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