WO2021048084A1 - Procede de traitement de polluants par catalyseur trois voies au demarrage d'un moteur a combustion - Google Patents
Procede de traitement de polluants par catalyseur trois voies au demarrage d'un moteur a combustion Download PDFInfo
- Publication number
- WO2021048084A1 WO2021048084A1 PCT/EP2020/075008 EP2020075008W WO2021048084A1 WO 2021048084 A1 WO2021048084 A1 WO 2021048084A1 EP 2020075008 W EP2020075008 W EP 2020075008W WO 2021048084 A1 WO2021048084 A1 WO 2021048084A1
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- WIPO (PCT)
- Prior art keywords
- oxygen
- engine
- catalysis
- catalysis means
- threshold
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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
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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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
- F01N3/18—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
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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
- F01N3/101—Three-way catalysts
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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
- F01N3/103—Oxidation catalysts for HC and CO only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/105—General auxiliary catalysts, e.g. upstream or downstream of the main catalyst
- F01N3/106—Auxiliary oxidation catalysts
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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
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
-
- 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
- F01N3/22—Control of additional air supply only, e.g. using by-passes or variable air pump drives
-
- 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
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
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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
- 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
- F01N2900/14—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust gas
- F01N2900/1402—Exhaust gas composition
-
- 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
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1602—Temperature of exhaust gas apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- 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
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1626—Catalyst activation temperature
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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
- TITLE PROCESS FOR TREATMENT OF POLLUTANTS BY A THREE-WAY CATALYST WHEN STARTING A COMBUSTION ENGINE
- the present invention relates to the field of catalytic converters intended to treat the exhaust gases of internal combustion engines, in particular emitted by vehicles, with the aim of reducing the emission at engine start-up of polluting components such as carbon monoxide. , nitrogen oxides or unburnt hydrocarbons.
- the time taken for the catalytic converter to reach this temperature can be long. This results in the emission of a large volume of untreated gas which contains pollutants the quantity of which is likely to be too high, either in relation to the standards in force, or in relation to an objective that has been set. fixed, lower than said standards.
- the present invention aims to reduce the emission of polluting components, by combining temperature and oxygen regulations of the catalyst.
- the subject of the invention is a method for treating pollutants emitted by a thermal engine vehicle, in which catalysis means are heated, and the quantity of oxygen is regulated in the means of catalyzes above a minimum quantity of oxygen by injecting air upstream of the catalysis means.
- the catalysis means are heated above a preheating threshold temperature before regulating the amount of oxygen in the catalysis means.
- the catalysis means are heated before allowing the engine to start.
- the quantity of oxygen is regulated in the catalysis means before allowing the engine to start.
- the regulation of the quantity of oxygen and the heating of the catalysis means are carried out after detection of a request to start the engine.
- the amount of oxygen in the catalysis means is maintained above a stoichiometric oxygen richness threshold after starting the engine.
- a heating element is switched off if the temperature of the catalysis means exceeds a steady-state temperature threshold after starting the engine.
- the method may further comprise a step during which the quantity of oxygen in the catalysis means is increased beyond a stoichiometric oxygen richness threshold after starting the engine and when the heating element is switched off. .
- the amount of oxygen in the catalysis means is regulated substantially around a stoichiometric oxygen richness threshold after exceeding said stoichiometric richness threshold.
- the invention also relates to a method in which a preheating grid of a heating element is heated up to a minimum grid temperature before heating the catalysis means with said heating element.
- FIG. l schematically represents a system used for the implementation of a treatment of pollutants emitted by a thermal engine vehicle by means of catalysis
- FIG. 2 illustrates an example of implementation of the processing system of FIG. 1;
- FIG.3 details the steps in the implementation of Figure 2 before engine start
- FIG.4 details the implementation steps of Figure 2 after engine start.
- FIG. 1 illustrates an embodiment of the system used for the implementation of a treatment of the pollutants emitted by a thermal engine vehicle 1 by means of catalysis means 3 placed after the exhaust 4 of the engine. 1.
- Catalyst 3 comprises a three-way catalytic converter 3 provided with so-called “precious” metals such as palladium, platinum or rhodium. It is intended to treat the exhaust gases coming out of an exhaust pipe 6, by three parallel chemical reactions, oxidation of carbon monoxide, oxidation of hydrocarbons and reduction of nitrogen oxides.
- precious metals such as palladium, platinum or rhodium.
- Catalyst 3 comprises an impregnation surface (known under the name of "washcoat”), comprising compounds based on oxide. of cerium capable of storing and removing oxygen very quickly to promote catalytic reactions.
- washcoat an impregnation surface
- Catalyst 3 is only effective from about four hundred degrees Celsius. In the current state of the art, short runs do not give the catalytic converter enough time to heat up.
- the pollutant treatment system therefore further comprises heating means 5 provided to release heat by the Joule effect to the catalyst 3, for example by means of a preheating grid consisting of an electrically resistive metal element through which a current flows.
- the heating element 5 can be arranged upstream of the catalyst 3 in the direction of gas flow or on the catalyst 3.
- the treatment of pollutants also uses means for circulating air 2 suitable for delivering air upstream of the catalyst 3, for example an air circulation pump 2 comprising a compressor blowing in the exhaust line 4. , 6.
- Control means are configured to establish the link between temperature and oxygen rate sensors S1, S2 placed upstream or downstream of the catalyst 3 and inter-system communication networks, for example having a CAN bus, to control the heating means 5 and the air pump 2 via a computer produced for example from an automobile computer comprising a processor.
- an upstream sensor SI controls the richness in air or oxygen with respect to the fuel of the gases at the outlet of the engine 1.
- a downstream sensor S2 can be provided to control the richness in oxygen Os at the outlet of the catalyst 3.
- the richness as the rate of fuel in air estimated or measured from the probe SI, S2 referred to a stoichiometric rate of fuel in air in the catalyst 3.
- the stoichiometric rate is a rate of fuel in the air leading to a chain of reactions of substantially complete catalysis.
- Figure 2 illustrates an example of the implementation of a pollutant treatment system.
- This implementation begins with a step R0 by which a desire for imminent ignition of the engine 1 is detected, for example by a request to start the vehicle or by detecting the presence of a user.
- the presence of a seated user is detected, for example by detecting contact on a vehicle seat, by infrared detection or by detecting the pupils of a user.
- the control means can be programmed via an interface on the vehicle's dashboard or via a remote device such as a multifunction telephone.
- the control means are configured to allow use of the system without starting the vehicle throughout the MO step.
- control means are configured to program daily at a predefined time an implementation of the RO step, that is to say a confirmation of the desire to start the engine, which leads to the step MO.
- the control means may have been configured to take into account information on the quantity of electric energy available in an electric charge accumulator of the vehicle, for example its battery, and if this information is available, step R0 can lead to a strategy exit by stopping the use of the pollutant treatment system before the engine.
- the command for heating the catalyst during step MO can thus be modulated or even canceled so as to give priority to the movement of the vehicle.
- Step MO detailed in FIG. 3, comprises steps C1, C2, El, E2 and C3, by which the favorable conditions for catalysis are prepared before authorizing the starting of engine 1 during step DO.
- step C1 the computer estimates a temperature TCAT of catalyst 3 from at least one measurement of temperature sensor SI, S2 upstream and / or downstream of catalyst 3 and compares it with a preheating threshold TCAT1 of the order of four hundred degrees Celsius.
- the catalyst 3 can thus be at the initiation temperature of the catalysis reactions when the engine 1 is started during step DO.
- the computer 7 can also be configured to determine, for example during step C l, if all the means of implementation 2, 3, 5 and the sensors SI, S2 equipping the vehicle 1 which will be called upon are functional. . Where appropriate, step C1 leads to step C2. In the event of a detected failure of one of the sensors used S I,
- the degraded mode of step C1 consists for example of the transmission of information, such as the display of an error signal on an instrument panel of the vehicle 1, accompanied by a strategy exit, c 'that is to say a direct start authorization without preheating or air injection.
- the first comparison step C1 is repeated at regular time intervals, for example every ten milliseconds. If the preheating temperature TCAT1 is reached in step C1, this leads to step C2, otherwise it leads to step C3.
- Step C2 consists of verifying by means of a temperature probe that the preheating grid exceeds a minimum grid temperature TGRID. Where appropriate, step C2 continues with step E1, otherwise it returns to step E2.
- the preheating of the heating grid 5 is accompanied by the actuation of the air circulation pump 2 which transfers the heat produced by the heating grid to the catalyst 3 located downstream of said heating grid in the absence of gas flow from engine 1.
- Step El therefore consists in supplying electric power to the heating element 5 and in switching off or keeping off the pump 2. Step El returns to step C2. As long as the heating element 5 is not at the TGRID temperature, the electrical supply passing through the preheating grid is maintained or increased.
- Step E2 consists in turning on or keeping the heating element 5 on and turning on or keeping pump 2 on.
- the air delivered upstream of the catalyst 3 is then drawn from the ambient air loaded with oxygen and circulates through the grid. preheating to allow the catalyst 3 to preheat before starting the engine 1.
- step C3 the amount of oxygen OS in catalyst 3 is compared to an oxygen level OS 1 of the order of eight to ten moles per cubic meter. As long as the oxygen level OS is below the level OS 1, step C3 returns to step E2, otherwise it continues with step DO.
- Step DO consists of authorizing and starting engine 1. At the time of starting, pump 2 can be turned off and the heating element 5 still activated. Step DO continues with step E3 of the set of steps Ml.
- the set of steps M1 comprises steps E3, C4, E4, E5 and C5, E6, E7 which are carried out successively at regular intervals, for example every ten milliseconds.
- Step E3 consists in stopping the air injection, for example by switching off pump 2, as soon as engine 1 starts. Step E3 continues with steps C4 and C5 carried out in parallel.
- the TCAT temperature of catalyst 3 must be greater than a temperature threshold TCAT2 of the order of six hundred degrees Celsius and the quantity of oxygen Os in the catalyst exceeds an oxygen threshold OS2 of the order of one to three moles per cubic meter.
- Catalyst 3 is thermochemically heated by exothermic catalysis reactions in addition to the electric heating provided.
- Step C4 consists in comparing the TCAT temperature of catalyst 3 with the TCAT2 threshold. If it exceeds TCAT2, the heating element 5 is turned off to replace its thermal input by the thermochemical input, otherwise one returns to step E5 during which the heating element 5 is turned on or kept on and either maintained or on increases the current flowing through it. During step C5, it is verified that the oxygen content OS of catalyst 3 does not fall below a threshold of the quantity of oxygen OS2. If the oxygen level OS in catalyst 3 falls below the threshold OS2, step C5 continues with step E6, otherwise step C5 goes to step E7.
- Step E6 consists of removing carbon monoxide from the exhaust gases. For this, we set up a richness setpoint in catalyst 3 greater than one hundred percent, between one hundred and one hundred and forty percent, that is to say that the oxygen level OS is increased at -beyond stoichiometric quantities. This step returns to step C5 as long as heating element 5 is on, that is, until step E4 has been passed. Step E6 can be held for five to sixty seconds after step E4 has passed before returning to step C5. Step E6 is therefore carried out only once after an engine start.
- step E7 an established engine speed is reached and a conventional richness regulation of the treatment system is activated. For example, a richness setpoint of substantially one hundred percent is sent to the control means.
- the system assesses and confirms the oxygen requirement of the catalyst and manages the achievement of adequate temperatures before and after engine start in order to limit the emissions of hydrocarbons, nitrogen compounds and carbon monoxide.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2022513442A JP2022547431A (ja) | 2019-09-11 | 2020-09-08 | 燃焼エンジンを始動するときに三元触媒を使用して汚染物質を処理するための方法 |
EP20765300.7A EP4028652A1 (fr) | 2019-09-11 | 2020-09-08 | Procede de traitement de polluants par catalyseur trois voies au demarrage d'un moteur a combustion |
CN202080057375.5A CN114651115B (zh) | 2019-09-11 | 2020-09-08 | 启动内燃机时使用三元催化器处理污染物的方法 |
KR1020227008141A KR20220054811A (ko) | 2019-09-11 | 2020-09-08 | 연소 엔진 시동 시 삼원 촉매를 사용하여 오염물질을 처리하는 방법 |
US17/635,477 US11781456B2 (en) | 2019-09-11 | 2020-09-08 | Method for treating pollutants using a three-way catalyst when starting up a combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1910020A FR3100566B1 (fr) | 2019-09-11 | 2019-09-11 | Procede de traitement de polluants par catalyseur trois voies au demarrage d’un moteur a combustion |
FRFR1910020 | 2019-09-11 |
Publications (1)
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WO2021048084A1 true WO2021048084A1 (fr) | 2021-03-18 |
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PCT/EP2020/075008 WO2021048084A1 (fr) | 2019-09-11 | 2020-09-08 | Procede de traitement de polluants par catalyseur trois voies au demarrage d'un moteur a combustion |
Country Status (7)
Country | Link |
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US (1) | US11781456B2 (fr) |
EP (1) | EP4028652A1 (fr) |
JP (1) | JP2022547431A (fr) |
KR (1) | KR20220054811A (fr) |
CN (1) | CN114651115B (fr) |
FR (1) | FR3100566B1 (fr) |
WO (1) | WO2021048084A1 (fr) |
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FR3122215B1 (fr) * | 2021-04-26 | 2024-02-16 | Psa Automobiles Sa | Procede d’injection d’air dans un catalyseur des gaz d’echappement |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778206A1 (fr) | 1998-04-29 | 1999-11-05 | Renault | Dispositif de pot catalytique |
DE102011002438A1 (de) * | 2011-01-04 | 2012-07-05 | Robert Bosch Gmbh | Bestimmung der Beladung eines Partikelfilters |
US20130125530A1 (en) * | 2011-11-22 | 2013-05-23 | GM Global Technology Operations LLC | Bypass hc - nox adsorber strategy |
FR3052490A1 (fr) * | 2016-06-14 | 2017-12-15 | Peugeot Citroen Automobiles Sa | Dispositif et procede de traitement des gaz d’echappement d’un moteur thermique |
DE102017107678A1 (de) * | 2017-04-10 | 2018-10-11 | Volkswagen Aktiengesellschaft | Verfahren zur Inbetriebnahme eines Verbrennungsmotors und Kraftfahrzeug mit einem Verbrennungsmotor |
DE102017113366A1 (de) * | 2017-06-19 | 2018-12-20 | Volkswagen Aktiengesellschaft | Abgasnachbehandlungssystem sowie Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5357752A (en) * | 1993-08-17 | 1994-10-25 | Exxon Research And Engineering Company | Control of secondary air to an electrically heated catalyst using feedback control |
US5410872A (en) * | 1993-10-04 | 1995-05-02 | Ford Motor Company | Automotive engine having catalytic exhaust aftertreatment device and secondary air injection control system for minimum catalyst light-off time |
US8056320B2 (en) * | 2008-05-30 | 2011-11-15 | GM Global Technology Operations LLC | Cold-start control systems for internal combustion engines |
US8752366B2 (en) * | 2010-05-21 | 2014-06-17 | Toyota Motor Engineering & Manufacturing North America, Inc. | Systems and methods for abating carbon monoxide in an exhaust stream |
US20120204536A1 (en) * | 2011-02-10 | 2012-08-16 | GM Global Technology Operations LLC | Catalytic converter combustion strategy for a hybrid vehicle |
US8112218B2 (en) * | 2011-03-10 | 2012-02-07 | Ford Global Technologies, Llc | Method for controlling an engine |
JP7151696B2 (ja) * | 2019-12-25 | 2022-10-12 | トヨタ自動車株式会社 | 触媒劣化検出装置 |
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2019
- 2019-09-11 FR FR1910020A patent/FR3100566B1/fr active Active
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2020
- 2020-09-08 JP JP2022513442A patent/JP2022547431A/ja active Pending
- 2020-09-08 EP EP20765300.7A patent/EP4028652A1/fr active Pending
- 2020-09-08 US US17/635,477 patent/US11781456B2/en active Active
- 2020-09-08 WO PCT/EP2020/075008 patent/WO2021048084A1/fr unknown
- 2020-09-08 KR KR1020227008141A patent/KR20220054811A/ko active Search and Examination
- 2020-09-08 CN CN202080057375.5A patent/CN114651115B/zh active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2778206A1 (fr) | 1998-04-29 | 1999-11-05 | Renault | Dispositif de pot catalytique |
DE102011002438A1 (de) * | 2011-01-04 | 2012-07-05 | Robert Bosch Gmbh | Bestimmung der Beladung eines Partikelfilters |
US20130125530A1 (en) * | 2011-11-22 | 2013-05-23 | GM Global Technology Operations LLC | Bypass hc - nox adsorber strategy |
FR3052490A1 (fr) * | 2016-06-14 | 2017-12-15 | Peugeot Citroen Automobiles Sa | Dispositif et procede de traitement des gaz d’echappement d’un moteur thermique |
DE102017107678A1 (de) * | 2017-04-10 | 2018-10-11 | Volkswagen Aktiengesellschaft | Verfahren zur Inbetriebnahme eines Verbrennungsmotors und Kraftfahrzeug mit einem Verbrennungsmotor |
DE102017113366A1 (de) * | 2017-06-19 | 2018-12-20 | Volkswagen Aktiengesellschaft | Abgasnachbehandlungssystem sowie Verfahren zur Abgasnachbehandlung eines Verbrennungsmotors |
Also Published As
Publication number | Publication date |
---|---|
US20220397047A1 (en) | 2022-12-15 |
FR3100566B1 (fr) | 2022-07-22 |
US11781456B2 (en) | 2023-10-10 |
EP4028652A1 (fr) | 2022-07-20 |
FR3100566A1 (fr) | 2021-03-12 |
JP2022547431A (ja) | 2022-11-14 |
CN114651115A (zh) | 2022-06-21 |
CN114651115B (zh) | 2024-07-23 |
KR20220054811A (ko) | 2022-05-03 |
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