EP1662105A1 - System zur Behandlung von NOx im Abgasstrom einer automobilen Brennkraftmaschine - Google Patents
System zur Behandlung von NOx im Abgasstrom einer automobilen Brennkraftmaschine Download PDFInfo
- Publication number
- EP1662105A1 EP1662105A1 EP05292350A EP05292350A EP1662105A1 EP 1662105 A1 EP1662105 A1 EP 1662105A1 EP 05292350 A EP05292350 A EP 05292350A EP 05292350 A EP05292350 A EP 05292350A EP 1662105 A1 EP1662105 A1 EP 1662105A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst
- temperature
- plasma
- catalytic
- temperatures
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
- F01N3/2803—Construction of catalytic reactors characterised by structure, by material or by manufacturing of catalyst support
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
-
- 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
- F01N3/0892—Electric or magnetic treatment, e.g. dissociation of noxious components
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
- F01N2240/28—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 plasma reactor
-
- 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
- F01N2370/00—Selection of materials for exhaust purification
Definitions
- the present invention relates to a system for treating the nitrogen oxides of the exhaust gas of a motor vehicle engine, comprising, in an exhaust line thereof, means for producing non-thermal plasma at from the exhaust gases they receive at the inlet and the nitrogen oxide reduction catalyst forming means arranged at the outlet of the plasma production means.
- the combustion of an air / fuel mixture in a motor vehicle engine produces oxides of nitrogen (nitrogen monoxide NO and nitrogen dioxide NO 2 ).
- a technology for the treatment of NOx present in the exhaust gas uses a catalyst arranged in the exhaust line of the engine.
- a catalyst has a permanent catalytic activity during the operation of the engine.
- Such a catalyst uses unburnt hydrocarbons from the exhaust gases to reduce NOx at catalytic sites provided for this purpose.
- the thermal window of catalytic activity of such a catalyst i.e., the temperature range where the catalyst is effective in reducing NOx, is relatively low.
- its use is incompatible with the operation of a vehicle engine for particular whose exhaust temperature can vary widely.
- the object of the present invention is to solve the aforementioned problem by proposing a NOx treatment system emitted by a motor vehicle engine having a thermal window of significant catalytic activity and compatible with a substantially permanent operation of the engine lean mixture, so that such system can be implanted in motor vehicles for particular for effective treatment of NOx.
- the subject of the invention is an exhaust gas NOx treatment system for a motor vehicle engine, comprising, in an exhaust line thereof, non-conventional plasma production means. -thermal from the exhaust gases they receive at the inlet and DeNOx catalyst means arranged at the output of the plasma production means, characterized in that the catalyst means comprise catalytic elements of different types having thermal windows complementary and variable catalytic activities depending on the nature of the gases they treat.
- a motor vehicle engine 10 is associated with means 12 for supplying fuel to its cylinders and means 14 for admitting air at its inlet.
- the engine 10 is also associated with an exhaust line 16 of its exhaust gas comprising a reactor 18 for producing non-thermal plasma.
- the reactor 18 comprises a cylindrical body comprising at least a first peripheral electrode connected to the ground of high voltage electrical supply means and a second central electrode, in the form of a wire, connected to a terminal of setpoint voltage of the high voltage supply means.
- the power supply means 20 are controllable and connected to the vehicle battery, for example. They comprise a waveform generator suitable for forming electric discharges in the exhaust gas passing through the reactor 18 to thereby produce a non-thermal plasma.
- the means 20 are adapted to deliver predetermined voltage pulses to the reactor electrodes or a sinusoidal voltage.
- the catalyst 22 comprises a plurality of successive separate catalytic elements 22a, 22b, 22c arranged in series.
- Each of these catalytic elements has a catalytic activity (NOx conversion rate) in a variable thermal window depending on the nature of the gases they treat, that is to say depending in particular on the composition of the gases. unburned hydrocarbon exhaust and plasma exhaust gas characteristics, as will be explained in more detail later.
- the thermal windows of the elements 22a, 22b, 22c of the catalyst 22 are complementary, a first window being in low temperatures, a second in intermediate temperatures and a third in high temperatures.
- the total thermal window of catalytic activity of the catalyst 22 is important, as will be explained in more detail later.
- the operation of the motor 10 and of the components which have just been described is controlled by a unit 24 implementing a NOx treatment control strategy which maximizes the catalytic activity of the catalyst 22 for the exhaust gas temperature, while by minimizing the fuel consumption induced by the reactor 18 power supply.
- a first temperature sensor 26 is arranged upstream of the catalyst 22 to acquire the temperature of the exhaust gas at the inlet thereof and delivers the upstream temperature acquired to the unit 24.
- a second temperature sensor 28 is also provided downstream of the catalyst 22 to acquire the temperature of the exhaust gas leaving the latter, and delivers the downstream temperature acquired to the unit 24.
- Means 30 for acquiring the operating point of the motor 10, for example the rotational speed thereof, the motor torque required by the driver and / or the air flow at the input of the motor 10, are also provided and deliver the operating point acquired to the unit 24.
- These means 30 comprise for example a speed sensor for the acquisition of the rotational speed of the motor 10, a position sensor of the accelerator pedal for the acquisition of the requested torque and a flowmeter arranged at the inlet of the intake means 14 for acquiring the air flow admitted into the engine 10.
- FIG. 1 A second embodiment of the reactor and the catalyst is shown schematically in Figure 2.
- Figures 1 and 2 the same or similar elements are referenced by the same number.
- the reactor 18 and the catalyst 22 are structurally similar to those of FIG. 1, but are incorporated in the same body 32, that is to say that the reactor 18 is arranged inside the catalyst 22.
- the non-thermal plasma is directly produced from the gases present in the catalyst.
- the reaction medium bathing the catalytic elements of the catalyst comprises a concentration of reactive elements, such as free radicals for example, greater because of the time of transport thereof to the catalytic elements with respect to to this one of the embodiment of Figure 1.
- FIGS. 3 to 10 illustrate the catalytic activity of different types of catalytic elements as a function of the temperature and the nature of the gases treated by them.
- the catalytic element 22a upstream of the catalyst has a catalytic activity in a high temperature window, that is to say having a main catalytic activity between about 300 ° C and about 500 ° C without plasma in the treated gases, and between about 200 ° C and about 400 ° C with plasma in the treated gases.
- the upstream catalytic element is Al 2 O 3 alumina.
- Table 1 shows the main characteristics of alumina Al 2 O 3 illustrated in Figures 3A, 3B, 4A and 4B.
- the nature of the exhaust gas treated with alumina depends on their unburned hydrocarbon composition at the engine outlet.
- the unburned hydrocarbons present at the outlet of the engine in the exhaust gas are substantially propene.
- the unburned hydrocarbons present at the engine outlet are a mixture of propene, propane, toluene and decane in the standard proportions of exhaust gas of a heat engine.
- the nature of the treated exhaust gas also depends on the presence or absence of non-thermal plasma in the alumina-treated gases.
- a first main column “Propene” of Table 1 refers to the catalytic properties of Al 2 O 3 alumina in the presence of propene as a major reducer in the exhaust gas at the engine outlet.
- a second main column “Hydrocarbon mixture” refers to these same properties in the presence of the mixture of unburned hydrocarbons in the exhaust gas leaving the engine.
- a first main line of Table 1 “Plasma-free” refers to the catalytic properties of alumina Al 2 O 3 in the absence of plasma in the treated exhaust gas and a second main line “With plasma” refers these same properties in the presence of plasma.
- Each of the first and second main columns of Table 1 is divided between a first column "Window (° C)", which lists thermal windows of catalytic activities of alumina Al 2 O 3 , and a column “AC (%) which lists the minimal catalytic activities of alumina Al 2 O 3 corresponding to these thermal windows.
- Table 1 Catalytic activity of alumina Al ⁇ sub> 2 ⁇ / sub> O ⁇ sub> 3 ⁇ / sub> depending on the temperature and the nature of the treated gases.
- the intermediate catalytic element 22b of the catalyst 22, downstream of the upstream catalytic element 22a, has a thermal window of intermediate catalytic activity, lower than that of the first upstream catalytic element, that is to say having a catalytic activity main between about 200 ° C and about 300 ° C with or without plasma in the treated gases.
- This intermediate catalytic element 22b is for example formed of a transition metal deposit on cerium and zirconium oxides.
- the intermediate catalytic element 22b is of the Rh / CeO 2 -ZrO 2 and / or Pd / CeO 2 -ZrO 2 type .
- Table 2 organized identically in Table 1, shows the main catalytic characteristics, as illustrated in FIGS. 5A, 5B, 6A and 6B, of a Pd-Rh / CeO 2 -ZrO 2 type element based on the temperature and nature of the gases described above.
- Table 2 Catalytic activity of Pd-Rh / CeO ⁇ sub> 2 ⁇ / sub> -ZrO ⁇ sub> 2 ⁇ / sub> as a function of the temperature and nature of the treated gases.
- the catalytic element 22c downstream of the catalyst 22, downstream of the intermediate catalytic element 22b, has a thermal window of low catalytic activity, lower than that of the intermediate catalytic element 22b, that is to say having a main catalytic activity between about 150 ° C and about 300 ° C with or without plasma in the treated gases.
- This downstream element 22c is for example formed of a deposit of precious metal on cerium and zirconium oxides.
- the catalytic element 22c downstream is of the Ag / CeO 2 -ZrO 2 type .
- Table 3 organized identically in Table 1, shows the main catalytic characteristics, as illustrated in FIGS. 7A, 7B, 8A and 8B, of an Ag / CeO 2 -ZrO 2 type element as a function of the temperature and nature of gases described above.
- Table 3 Catalytic activity of Ag / CeO ⁇ sub> 2 ⁇ / sub> -ZrO ⁇ sub> 2 ⁇ / sub> as a function of the temperature and nature of the gases treated.
- thermal windows of catalytic activity of the various elements 22a, 22b, 22c are complementary and decrease in the direction of the flow of the exhaust gases in the exhaust line 16.
- each of the elements 22a, 22b, 22c of the catalyst 22 has a total catalytic activity as a function of the temperature and the nature of the treated exhaust gases as illustrated in FIGS. 9A, 9B, 10A and 10B.
- Table 4 organized in a manner identical to Table 1, summarizes the main characteristics of the catalyst 22.
- Table 4 total catalytic activity of the catalyst, formed successively, in the direction of gas flow, of Al ⁇ sub> 2 ⁇ / sub> O ⁇ sub> 3 ⁇ / sub>, of Pd-Rh / CeO ⁇ sub > 2 ⁇ / sub> -ZrO ⁇ sub> 2 ⁇ / sub> and Ag / CeO ⁇ sub> 2 ⁇ / sub> -ZrO ⁇ sub> 2 ⁇ / sub> depending on the temperature and nature of the gases treaties.
- the catalyst 22 thus has a catalytic activity in a thermal window at least equal to [200-500] ° C., which makes it possible to obtain NOx treatment in a wide operating range of a particular vehicle engine.
- the three catalytic elements Al 2 O 3 , Ph-Rh / CeO 2 -ZrO 2 and Ag / CeO 2 -ZrO 2 are deposited on a single support, such as cordielite, mullite, carborundum (SiC ), metal, or any type of substrate suitable for use as a catalyst support.
- the unit 24 comprises means 40 for storing a first and a second threshold temperature T1, T2.
- the storage means 40 are connected to first and second comparison means 42, 44 of the threshold temperatures T1, T2 at the upstream temperatures T 1 and T d acquired respectively.
- T1, T2 threshold temperatures are for example determined experimentally and depend in particular on the composition of catalytic elements, their precious metal charge and the catalyst volume, as well as the adjustment of the engine.
- T1 is for example equal to 200 ° C and T2 is for example equal to 350 ° C.
- the activation / deactivation means 46 activate the high voltage power supply of the plasma production reactor if this activation has the effect of a significant catalytic activity increase of the catalyst, for example greater than 10%.
- the activation / deactivation means 46 does not energize the plasma generating reactor, an activation condition of this reactor being that at least one type of catalyst element present in the catalyst 22 is in a primed state.
- the NOx are then not treated by the non-primed catalytic elements and thus pass through the catalyst without reduction in nitrogen. Indeed, the activation of the reactor would have substantially no effect on the catalytic activity of the catalyst. This phase corresponds to the cold start of the vehicle.
- the catalytic elements are ignited and the means 46 activate the reactor for the production of plasma.
- the three catalytic elements including alumina whose thermal window is located in the high temperatures in the absence of plasma with an evolution thereof to lower temperatures in the presence of plasma discharges in the exhaust gas, participate in the reduction of NOx exhaust gas.
- the activation of the reactor thus results in a significant gain in the total catalytic activity of the catalyst greater than 10%, thus justifying the overconsumption of fuel induced by the activity of the reactor.
- the means 46 control the means 20 for supplying the reactor steadily.
- the supply means 20 are controlled by the activation / deactivation means 46 so that they deliver to the electrodes of the reactor a power of between 250 and 300 W, for example.
- the means 46 control the supply means 20 as a function of the amount of NOx present in the exhaust gas and / or the temperature thereof.
- the means 46 receive the operating point Pf of the engine and determine, for example by means of a predetermined map and stored therein, the amount of NOx emitted by the engine for the operating point. The means 46 then control the feed means 20 of the reactor so that they deliver a modulated power according to the amount of NOx determined, for example increasing in function of an increasing amount of NOx emitted by the engine.
- the means 46 deactivate the plasma production reactor. Indeed, for temperatures greater than T2, only the high temperature catalytic element, that is to say alumina, has a catalytic activity. However, for these temperatures, the thermal window of catalytic activity of alumina is significantly greater without plasma than with plasma in the presence of the hydrocarbon mixture in the exhaust gas as illustrated in FIGS. 4A and 4B. Since the activity gain by activation of the reactor is zero, the reactor is not activated for temperatures greater than T2. This makes it possible to reduce the fuel consumption of the engine for the production of energy necessary for the operation of the reactor supply means.
- the means 46 are also adapted to control the operation of the motor supply means and / or the air inlet intake means of the engine in order to modify the unburned hydrocarbon composition of the exhaust gases and thus modulate the catalytic activity of the catalyst as a function of the composition of the exhaust gas in propene or in a mixture of hydrocarbons.
- the means 46 is capable of modifying the fuel injection strategy in the engine cylinders by controlling a late injection of fuel therein, or post-injection.
- the post-injection of fuel into the engine cylinders has the effect of significantly increasing the amount of unburned hydrocarbons in the exhaust gas, which leads to a temporary increase in the HC / NOx ratio of the amount of unburned hydrocarbons the amount of NOx in the exhaust gas, and therefore to an improvement in the conversion of NOx into nitrogen.
- This unit implements in a simple manner a control strategy which maximizes, as a function of temperature, the catalytic activity of a catalyst comprising three complementary catalytic elements, in a broad thermal window of approximately [200, 500] ° C. while minimizing fuel over-consumption induced by the use of a plasma generating reactor.
- system according to the invention may comprise a single sensor placed upstream of the catalyst, and the control unit is adapted to compare this acquired temperature with the aforementioned threshold temperatures for a control of the reactor supply means similar to that described previously.
- the acquired downstream temperature being substantially that of the last catalytic element of the catalyst, which allows a control closer to the temperature thereof.
- the catalyst may comprise 2 or more portions of catalytic element types.
- Another variant consists in replacing the catalytic elements of Ag / CeO 2 -ZrO 2 and Pd-Rh / CeO 2 -ZrO 2 type with a material containing no precious metals, namely two elements of CeO 2 -ZrO 2 , so that the cost of the system is significantly reduced due to the absence of precious metals.
- the catalyst comprises a portion of alumina Al 2 O3 upstream of a portion of CeO 2 -ZrO 2.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Toxicology (AREA)
- Health & Medical Sciences (AREA)
- Exhaust Gas After Treatment (AREA)
- Control Of Eletrric Generators (AREA)
- Hybrid Electric Vehicles (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
- Treating Waste Gases (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0411882A FR2877693B1 (fr) | 2004-11-08 | 2004-11-08 | SYSTEME DE TRAITEMENT DES NOx DE GAZ D'ECHAPPEMENT D'UN MOTEUR THERMIQUE DE VEHICULE AUTOMOBILE |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1662105A1 true EP1662105A1 (de) | 2006-05-31 |
EP1662105B1 EP1662105B1 (de) | 2008-04-30 |
Family
ID=34950949
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05292350A Not-in-force EP1662105B1 (de) | 2004-11-08 | 2005-11-07 | System zur Behandlung von NOx im Abgasstrom einer automobilen Brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1662105B1 (de) |
AT (1) | ATE393872T1 (de) |
DE (1) | DE602005006363T2 (de) |
FR (1) | FR2877693B1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2912385B1 (fr) | 2007-02-13 | 2011-05-06 | Gaz Transport & Technigaz | Structure cylindrique composee d'elements rectangulaires. |
JP5045629B2 (ja) | 2008-04-08 | 2012-10-10 | 三菱電機株式会社 | 排気ガス浄化装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1006164A3 (fr) * | 1990-10-10 | 1994-05-31 | Didier Werke Ag | Dispositif de catalyseur pour la reduction des oxydes d'azote. |
JPH11153021A (ja) * | 1997-09-16 | 1999-06-08 | Denso Corp | 内燃機関の排気浄化装置 |
WO2000043469A2 (en) * | 1999-01-21 | 2000-07-27 | Litex, Inc. | Combined plasma reactor catalyst systems for effective emission control over a range of operating conditions |
EP1095702A1 (de) * | 1998-06-30 | 2001-05-02 | Toyota Jidosha Kabushiki Kaisha | Verfahren und katalysator zur reinigung von abgas und verfahren zur herstellung des katalysators |
JP2002256853A (ja) * | 2001-03-02 | 2002-09-11 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2004267843A (ja) * | 2003-03-06 | 2004-09-30 | Mazda Motor Corp | 排気ガス浄化用触媒 |
JP2004305841A (ja) * | 2003-04-03 | 2004-11-04 | Honda Motor Co Ltd | NOx浄化システム |
-
2004
- 2004-11-08 FR FR0411882A patent/FR2877693B1/fr not_active Expired - Fee Related
-
2005
- 2005-11-07 DE DE602005006363T patent/DE602005006363T2/de active Active
- 2005-11-07 EP EP05292350A patent/EP1662105B1/de not_active Not-in-force
- 2005-11-07 AT AT05292350T patent/ATE393872T1/de not_active IP Right Cessation
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE1006164A3 (fr) * | 1990-10-10 | 1994-05-31 | Didier Werke Ag | Dispositif de catalyseur pour la reduction des oxydes d'azote. |
JPH11153021A (ja) * | 1997-09-16 | 1999-06-08 | Denso Corp | 内燃機関の排気浄化装置 |
EP1095702A1 (de) * | 1998-06-30 | 2001-05-02 | Toyota Jidosha Kabushiki Kaisha | Verfahren und katalysator zur reinigung von abgas und verfahren zur herstellung des katalysators |
WO2000043469A2 (en) * | 1999-01-21 | 2000-07-27 | Litex, Inc. | Combined plasma reactor catalyst systems for effective emission control over a range of operating conditions |
JP2002256853A (ja) * | 2001-03-02 | 2002-09-11 | Toyota Motor Corp | 内燃機関の排気浄化装置 |
JP2004267843A (ja) * | 2003-03-06 | 2004-09-30 | Mazda Motor Corp | 排気ガス浄化用触媒 |
JP2004305841A (ja) * | 2003-04-03 | 2004-11-04 | Honda Motor Co Ltd | NOx浄化システム |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1999, no. 11 30 September 1999 (1999-09-30) * |
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 01 14 January 2003 (2003-01-14) * |
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) * |
Also Published As
Publication number | Publication date |
---|---|
DE602005006363D1 (de) | 2008-06-12 |
DE602005006363T2 (de) | 2009-06-10 |
FR2877693B1 (fr) | 2007-04-13 |
ATE393872T1 (de) | 2008-05-15 |
EP1662105B1 (de) | 2008-04-30 |
FR2877693A1 (fr) | 2006-05-12 |
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