FR3100275A1 - PREHEATING SYSTEM AND METHOD FOR THREE-WAY CATALYST - Google Patents
PREHEATING SYSTEM AND METHOD FOR THREE-WAY CATALYST Download PDFInfo
- Publication number
- FR3100275A1 FR3100275A1 FR1909488A FR1909488A FR3100275A1 FR 3100275 A1 FR3100275 A1 FR 3100275A1 FR 1909488 A FR1909488 A FR 1909488A FR 1909488 A FR1909488 A FR 1909488A FR 3100275 A1 FR3100275 A1 FR 3100275A1
- Authority
- FR
- France
- Prior art keywords
- catalyst
- valve
- way catalyst
- electric
- preheating
- 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
Links
- 239000003054 catalyst Substances 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 230000003213 activating effect Effects 0.000 claims description 8
- 230000004913 activation Effects 0.000 claims description 7
- 238000004590 computer program Methods 0.000 claims description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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 ; 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
-
- 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
-
- 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
- F01N9/00—Electrical control of exhaust gas treating 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
- 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
-
- 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
- F01N2240/36—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 exhaust flap
-
- 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
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/06—Exhaust treating devices having provisions not otherwise provided for for improving exhaust evacuation or circulation, or reducing back-pressure
-
- 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
- F01N2410/00—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device
- F01N2410/06—By-passing, at least partially, exhaust from inlet to outlet of apparatus, to atmosphere or to other device at cold starting
-
- 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
-
- 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
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Materials Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
L’invention concerne un système de préchauffage (6) pour catalyseur trois voies (4) équipant le circuit d’échappement (1) d’un moteur thermique à essence d’un véhicule comprenant un collecteur d’échappement (8), ledit catalyseur trois voies (4) étant disposé en aval de la sortie du moteur thermique, le circuit d’échappement (1) comportant en outre en aval dudit catalyseur trois voies (4) une tubulure (9) caractérisé en ce que ledit système de préchauffage (6) comporte une pompe à air (10) montée sur un conduit de dérivation (11) agencé en parallèle de ladite tubulure (9), ledit système de préchauffage (6) comprenant en outre un premier clapet (12), un second clapet (13) et un catalyseur électrique (7), ledit catalyseur électrique (7) étant disposé en amont dudit catalyseur trois voies (4), ledit premier clapet (12) étant disposé dans ladite tubulure (12) et ledit second clapet (13) étant disposé dans ledit conduit de dérivation (11). Figure de l’abrégé : Fig. 1The invention relates to a preheating system (6) for a three-way catalyst (4) fitted to the exhaust circuit (1) of a gasoline engine of a vehicle comprising an exhaust manifold (8), said catalyst three-way (4) being disposed downstream of the outlet of the heat engine, the exhaust circuit (1) further comprising downstream of said three-way catalyst (4) a pipe (9) characterized in that said preheating system ( 6) comprises an air pump (10) mounted on a bypass duct (11) arranged in parallel with said pipe (9), said preheating system (6) further comprising a first valve (12), a second valve ( 13) and an electric catalyst (7), said electric catalyst (7) being arranged upstream of said three-way catalyst (4), said first valve (12) being arranged in said pipe (12) and said second valve (13) being disposed in said bypass duct (11). Abstract figure: Fig. 1
Description
L’invention se rapporte à un système et un procédé de préchauffage de catalyseur trois voies équipant les moteurs thermiques à essence dans le but d’optimiser la dépollution de ce type de moteurs.The invention relates to a system and a method for preheating a three-way catalyst fitted to internal combustion gasoline engines with the aim of optimizing the pollution control of this type of engine.
Il est connu de l’état de la technique des systèmes de dépollution pour moteur thermique à essence mettant en œuvre, notamment, un catalyseur trois voies, ayant pour acronyme en langue anglaise TWC ou ‘’Three-Way Catalyst’’, et un filtre à particules, ayant pour acronyme en langue anglaise GPF ou ‘’Gasoline Particle Filter’’. Un catalyseur trois voies, dénommé également pot catalytique, traite les émissions d’oxydes d’azote, de monoxyde de carbone et d’hydrocarbures non brûlés selon trois réactions principales grâce à divers métaux précieux tels que le platine, le palladium ou le rhodium. Le monoxyde de carbone et les hydrocarbures réagissent avec l’oxygène pour former du dioxyde de carbone et de l’eau. Les oxydes d’azote réagissent avec le monoxyde de carbone pour former de l’azote et du dioxyde de carbone. Une quinzaine d’autres réactions ont également lieu au sein du catalyseur trois voies. Le platine et le palladium accélèrent les réactions chimiques relatives au traitement du monoxyde carbone et des hydrocarbures non brûlés. Le rhodium, quant à lui, accélère les réactions entre les oxydes d’azote et le monoxyde de carbone. Concernant le filtre à particules, il a pour fonction de limiter les émissions de particules fines. Un catalyseur trois voies parvient à traiter de manière optimale les polluants lorsqu’il a atteint une température de fonctionnement comprise entre 300°C et 400°C. En dessous de cette plage de température, la dépollution ne se réalise pas correctement car les réactions chimiques décrites précédemment n’ont pas lieu ou sinon se produisent, mais alors avec une efficacité dégradée. Il a été proposé dans l’état de la technique de positionner au plus proche du collecteur d’échappement le catalyseur trois voies afin d’obtenir une montée en température plus rapide et ainsi améliorer l’efficacité lors des démarrages à froid. Bien que cette solution améliore la dépollution des moteurs thermiques à essence, son efficacité reste néanmoins relativement modeste lors de la phase de démarrage à froid.It is known from the state of the art of depollution systems for gasoline combustion engines implementing, in particular, a three-way catalyst, having the acronym in English language TWC or "Three-Way Catalyst", and a filter particles, with the acronym in English GPF or ''Gasoline Particle Filter''. A three-way catalyst, also called a catalytic converter, treats emissions of nitrogen oxides, carbon monoxide and unburned hydrocarbons according to three main reactions using various precious metals such as platinum, palladium or rhodium. Carbon monoxide and hydrocarbons react with oxygen to form carbon dioxide and water. Nitrogen oxides react with carbon monoxide to form nitrogen and carbon dioxide. About fifteen other reactions also take place within the three-way catalyst. Platinum and palladium accelerate chemical reactions relating to the treatment of carbon monoxide and unburned hydrocarbons. Rhodium, on the other hand, accelerates the reactions between nitrogen oxides and carbon monoxide. The particle filter has the function of limiting fine particle emissions. A three-way catalyst manages to optimally treat pollutants when it has reached an operating temperature of between 300°C and 400°C. Below this temperature range, the depollution is not carried out correctly because the chemical reactions described above do not take place or otherwise occur, but then with degraded efficiency. It has been proposed in the state of the art to position the three-way catalyst as close as possible to the exhaust manifold in order to obtain a faster rise in temperature and thus improve efficiency during cold starts. Although this solution improves the depollution of internal combustion gasoline engines, its efficiency nevertheless remains relatively modest during the cold start phase.
Le but de l’invention est donc de pallier les inconvénients de l’art antérieur en proposant un système de préchauffage pour catalyseur trois voies équipant un moteur thermique à essence afin d’en améliorer l’efficacité lors des démarrages à froid.The object of the invention is therefore to overcome the drawbacks of the prior art by proposing a preheating system for a three-way catalyst fitted to a gasoline internal combustion engine in order to improve its efficiency during cold starts.
Pour ce faire, l’invention se rapporte ainsi, dans son acceptation la plus large, à un système de préchauffage pour catalyseur trois voies équipant le circuit d’échappement d’un moteur thermique à essence d’un véhicule comprenant un collecteur d’échappement relié à la sortie dudit moteur thermique, ledit catalyseur trois voies étant disposé en aval de la sortie du moteur thermique, le circuit d’échappement comportant en outre en aval dudit catalyseur trois voies une tubulure caractérisé en ce que ledit système de préchauffage comporte une pompe à air montée sur un conduit de dérivation agencé en parallèle de ladite tubulure, l’entrée dudit conduit de dérivation étant reliée à ladite tubulure et prend naissance en aval dudit catalyseur trois voies et la sortie dudit conduit de dérivation étant reliée à ladite tubulure et est disposée en aval de ladite entrée dudit conduit de dérivation, ledit système de préchauffage comprenant en outre un premier clapet, un second clapet et un catalyseur électrique, ledit catalyseur électrique étant disposé en amont dudit catalyseur trois voies, ledit premier clapet étant disposé dans ladite tubulure entre l’entrée dudit conduit de dérivation et la sortie dudit conduit de dérivation et ledit second clapet étant disposé dans ledit conduit de dérivation et en amont de ladite pompe à air.To do this, the invention thus relates, in its broadest sense, to a preheating system for a three-way catalyst equipping the exhaust circuit of a gasoline engine of a vehicle comprising an exhaust manifold connected to the outlet of said heat engine, said three-way catalyst being arranged downstream of the outlet of the heat engine, the exhaust circuit further comprising downstream of said three-way catalyst a pipe characterized in that said preheating system comprises a pump air pump mounted on a bypass duct arranged in parallel with said tubing, the inlet of said bypass duct being connected to said tubing and originates downstream of said three-way catalyst and the outlet of said bypass duct being connected to said tubing and is disposed downstream of said inlet of said bypass duct, said preheating system further comprising a first valve, a second valve and an electrical catalyst, said electrical catalyst being disposed upstream of said three-way catalyst, said first valve being disposed in said pipe between the inlet of said bypass conduit and the outlet of said bypass conduit and said second valve being disposed in said bypass conduit and upstream of said air pump.
Grâce à l’invention, le catalyseur trois voies atteint sa température de fonctionnement optimale plus rapidement qu’avec la solution proposée dans l’art antérieur. Ainsi, les réactions chimiques relatives au traitement des émissions polluantes telles que les oxydes d’azote, le monoxyde de carbone et les hydrocarbures non brûlés se produisent dès le démarrage du moteur thermique à essence, même lorsqu’il est froid.Thanks to the invention, the three-way catalyst reaches its optimum operating temperature more quickly than with the solution proposed in the prior art. Thus, the chemical reactions relating to the treatment of polluting emissions such as nitrogen oxides, carbon monoxide and unburned hydrocarbons occur as soon as the gasoline internal combustion engine is started, even when it is cold.
De préférence, la puissance électrique dudit catalyseur électrique est comprise entre 2 et 4 KW. Le catalyseur électrique consomme ainsi peu d’énergie électrique et la charge de la batterie du véhicule est ainsi préservée.Preferably, the electric power of said electric catalyst is between 2 and 4 KW. The electric catalytic converter thus consumes little electrical energy and the charge of the vehicle battery is thus preserved.
De préférence, le système de préchauffage comporte en outre un filtre à particules disposé en aval dudit catalyseur trois voies. De cette façon, la dépollution est encore améliorée.Preferably, the preheating system further comprises a particulate filter arranged downstream of said three-way catalyst. In this way, pollution control is further improved.
L’invention a également pour objet un procédé de préchauffage d’un catalyseur trois voies pour moteur thermique à essence mettant en œuvre un système de préchauffage, ledit moteur thermique comportant un circuit électrique et un papillon des gaz, ledit procédé comportant les étapes suivantes :The invention also relates to a method for preheating a three-way catalyst for a gasoline heat engine implementing a preheating system, said heat engine comprising an electrical circuit and a throttle valve, said method comprising the following steps:
- une étape d’activation du circuit électrique dudit moteur thermique ;- a step of activating the electrical circuit of said heat engine;
- une étape d’ouverture dudit papillon des gaz de manière à laisser de l’air frais circuler dans le circuit d’échappement ;- a step of opening said throttle valve so as to allow fresh air to circulate in the exhaust circuit;
- une étape de fermeture dudit premier clapet et d’ouverture dudit second clapet ;- a step of closing said first valve and opening said second valve;
- une étape d’activation de ladite pompe à air afin d’aspirer de l’air frais et dudit catalyseur électrique afin de réchauffer l’air frais ;- a step of activating said air pump in order to suck in fresh air and said electric catalyst in order to heat the fresh air;
- une étape de désactivation de ladite pompe à air ;- a step of deactivating said air pump;
- une étape d’ouverture dudit premier clapet et de fermeture dudit second clapet ;- a step of opening said first valve and closing said second valve;
- une étape de démarrage dudit moteur thermique ;- a step of starting said heat engine;
- une étape de désactivation dudit catalyseur électrique.- A step of deactivating said electric catalyst.
Grâce à l’invention, on peut traiter les émissions polluantes produites par un moteur thermique à essence dès son démarrage, même lors d’un démarrage à froid. Il faut comprendre par ‘’démarrage à froid’’ que le moteur thermique à essence n’a pas fonctionné depuis un certain temps et que sa température est redescendue à la température ambiante.Thanks to the invention, it is possible to treat the polluting emissions produced by a gasoline internal combustion engine as soon as it is started, even during a cold start. It should be understood by "cold start" that the internal combustion engine has not been running for some time and that its temperature has dropped to ambient temperature.
Avantageusement, l’étape de désactivation dudit catalyseur électrique a lieu moins d’une seconde après l’étape de démarrage dudit moteur thermique. On peut ainsi économiser l’énergie électrique stockée dans la batterie du véhicule.Advantageously, the step of deactivating said electric catalyst takes place less than one second after the step of starting said heat engine. This saves the electrical energy stored in the vehicle battery.
De manière préférée, l’étape de désactivation dudit catalyseur électrique a lieu entre une et dix secondes après l’étape de démarrage dudit moteur thermique. De cette manière, la dépollution est optimisée.Preferably, the step of deactivating said electric catalyst takes place between one and ten seconds after the step of starting said heat engine. In this way, depollution is optimized.
De préférence, l’étape de désactivation dudit catalyseur électrique a lieu lorsque ledit catalyseur trois voies a atteint une température comprise entre 250°C et 400°C.Preferably, the step of deactivating said electric catalyst takes place when said three-way catalyst has reached a temperature of between 250°C and 400°C.
Avantageusement, l’étape de désactivation dudit catalyseur électrique a lieu lorsque ledit catalyseur trois voies a atteint une température d’environ 300°C.Advantageously, the step of deactivating said electric catalyst takes place when said three-way catalyst has reached a temperature of approximately 300°C.
Dans un mode préféré, avant l’étape d’activation de ladite pompe à air, une étape de détermination du temps d’activation nécessaire de ladite pompe à air et dudit catalyseur électrique basée sur la puissance de la batterie dudit véhicule pour que le catalyseur trois voies atteigne sa température de fonctionnement optimale, l’étape d’activation de ladite pompe à air et dudit catalyseur électrique ayant lieu pendant une durée correspondant au temps d’activation nécessaire déterminé. Cette étape permet d’optimiser la consommation d’énergie électrique provenant de la batterie du véhicule et d’optimiser la dépollution.In a preferred mode, before the step of activating said air pump, a step of determining the necessary activation time of said air pump and of said electric catalyst based on the power of the battery of said vehicle so that the catalyst three-way reaches its optimum operating temperature, the step of activating said air pump and said electric catalyst taking place for a period corresponding to the determined necessary activation time. This step makes it possible to optimize the consumption of electrical energy from the vehicle's battery and to optimize pollution control.
De préférence, l’étape de détermination du temps d’activation nécessaire est réalisée au moyen d’un module électronique mettant en œuvre un programme d’ordinateur.Preferably, the step of determining the required activation time is carried out by means of an electronic module implementing a computer program.
On décrira ci-après, à titre d’exemples non limitatifs, une forme d’exécution de la présente invention, en référence à la figure annexée sur laquelle :An embodiment of the present invention will be described below, by way of non-limiting examples, with reference to the appended figure in which:
Afin de bien comprendre les caractéristiques de l'invention, il faut souligner que les termes « amont », « aval », « entrée » et « sortie » sont à considérer par rapport au sens de propagation des gaz. De même, il est supposé connu l'existence d'un circuit d'admission de gaz pour un moteur thermique.In order to clearly understand the characteristics of the invention, it should be emphasized that the terms “upstream”, “downstream”, “inlet” and “outlet” are to be considered with respect to the direction of propagation of the gases. Likewise, it is assumed that the existence of a gas admission circuit for a heat engine is known.
La figure 1 illustre schématiquement une vue partielle d’un circuit d’échappement 1 d’un moteur thermique à essence comportant un collecteur d’échappement 8 relié à la sortie dudit moteur thermique, un système de dépollution 2 disposé en aval dudit collecteur d’échappement 8 et une tubulure 9 disposée en aval dudit système de dépollution 2. Le système de dépollution 2 comprend un catalyseur trois voies 4, un filtre à particules 5 et un système de préchauffage 6, selon un mode de réalisation de la présente invention. Le système de préchauffage 6 a pour fonction de préchauffer le catalyseur trois voies 4 avant le démarrage dudit moteur thermique, afin d’en améliorer l’efficacité et ainsi réduire significativement les émissions polluantes produites par ledit moteur thermique à essence lors de son démarrage. Lors de cette étape de préchauffage, la température dudit catalyseur trois voies 4 va être amenée, par exemple, à environ 300°C afin de le faire fonctionner de manière optimale. Un autre type de catalyseur trois voies 4 peut avoir une température optimale de fonctionnement différente, telle que 250°C ou 350°C. Le système de préchauffage 6 comporte un catalyseur électrique 7 disposé en aval du collecteur d’échappement 8 et en amont de l’entrée du catalyseur trois voies 4. Le catalyseur électrique 7 est un élément chauffant qui a pour fonction d’augmenter la température dudit catalyseur trois voies 4 jusqu’à sa température optimale de fonctionnement et ceci avant le démarrage dudit moteur thermique. La durée de ce préchauffage dépend du temps nécessaire au catalyseur trois voies 4 pour atteindre sa température optimale de fonctionnement. Par exemple, cette durée peut varier entre 2 et 10 secondes. Le catalyseur électrique 7 a une puissance électrique de 2 à 4 KW. Le système de préchauffage 6 comprend en outre une pompe à air 10 montée sur un conduit de dérivation 11 agencée en parallèle de ladite tubulure 9, l’entrée 14 dudit conduit de dérivation 11 prend naissance en aval dudit catalyseur trois voies 4, sur ladite tubulure 9. La sortie 15 dudit conduit de dérivation 11 est reliée en aval de ladite tubulure 9. La pompe à air 10 a pour fonction d’aspirer l’air frais passant par le moteur thermique, avant son démarrage. Un premier clapet 12 est disposé dans la tubulure 9, entre l’entrée 14 et la sortie 15 dudit conduit de dérivation 11. Un second clapet est disposé dans ledit conduit de dérivation 11, à son entrée 14. Le procédé de préchauffage dudit catalyseur trois voies 4 selon l’invention est décrit ci-après. On active tout d’abord le circuit électrique dudit moteur thermique afin d’alimenter en électricité, notamment, la pompe à air 10 et le catalyseur électrique 7. On ouvre ensuite le papillon des gaz du moteur thermique de manière à laisser de l’air frais circuler dans le circuit d’échappement 1, on ferme le premier clapet 12 et on ouvre le second clapet 13. L’air frais est ainsi aspiré par la pompe à air 10 et transite par le conduit de dérivation 11. La catalyseur électrique 7 est activé afin de réchauffer l’air frais et, par voie de conséquence, le catalyseur trois voies 4 jusqu’à atteindre sa température optimale de fonctionnement, par exemple 300°C. La durée pour atteindre la température optimale de fonctionnement dépend de la puissance de la batterie du véhicule. En effet, si la batterie a une faible puissance, le catalyseur électrique 7 sera activé plus longuement afin que le catalyseur trois voies 4 atteigne sa température optimale de fonctionnement. Au contraire, si la batterie a une puissance élevée, le catalyseur électrique 7 sera activé sur une plus courte durée. Un module électronique (non représenté), mettant en œuvre un programme d’ordinateur, vérifie, lors de l’activation du circuit électrique, la température du catalyseur trois voies 4 afin de déterminer le temps d’activation nécessaire (t), de ladite pompe à air 10 et dudit catalyseur électrique 7, afin que le catalyseur trois voies 4 atteigne sa température de fonctionnement optimale. Le catalyseur électrique 7 est, par exemple, activé pendant environ 10 secondes. Lorsque le module électronique détermine que la température optimale de fonctionnement est atteinte, la pompe à air 10 est désactivée, le premier clapet s’ouvre 12, le second clapet 13 se ferme et le moteur thermique est démarré. Le catalyseur électrique 7 est ensuite désactivé moins d’une seconde après le démarrage du moteur thermique. Dans un mode de réalisation alternatif, le catalyseur électrique 7 est désactivé entre 2 et 10 secondes après le démarrage du moteur thermique. Ce procédé de préchauffage a pour avantage de rendre efficace le système de dépollution au moyen d’un catalyseur trois voies dès le démarrage de moteur thermique à essence et ainsi réduire significativement les émissions de polluants tels que les oxydes d’azote, le monoxyde de carbone et les hydrocarbures non brûlés.FIG. 1 schematically illustrates a partial view of an exhaust circuit 1 of a gasoline heat engine comprising an exhaust manifold 8 connected to the output of said heat engine, a pollution control system 2 disposed downstream of said exhaust manifold exhaust 8 and a pipe 9 arranged downstream of said pollution control system 2. The pollution control system 2 comprises a three-way catalyst 4, a particulate filter 5 and a preheating system 6, according to one embodiment of the present invention. The function of the preheating system 6 is to preheat the three-way catalyst 4 before the start of said heat engine, in order to improve its efficiency and thus significantly reduce the polluting emissions produced by said gasoline heat engine when it is started. During this preheating step, the temperature of said three-way catalyst 4 will be brought, for example, to around 300° C. in order to make it operate optimally. Another type of three-way catalyst 4 may have a different optimum operating temperature, such as 250°C or 350°C. The preheating system 6 comprises an electric catalyst 7 disposed downstream of the exhaust manifold 8 and upstream of the inlet of the three-way catalyst 4. The electric catalyst 7 is a heating element whose function is to increase the temperature of said three-way catalyst 4 to its optimum operating temperature and this before the start of said heat engine. The duration of this preheating depends on the time necessary for the three-way catalyst 4 to reach its optimum operating temperature. For example, this duration can vary between 2 and 10 seconds. The electric catalyst 7 has an electric power of 2 to 4 KW. The preheating system 6 further comprises an air pump 10 mounted on a bypass duct 11 arranged in parallel with said pipe 9, the inlet 14 of said bypass pipe 11 originates downstream of said three-way catalyst 4, on said pipe 9. The outlet 15 of said bypass duct 11 is connected downstream of said pipe 9. The function of the air pump 10 is to suck in the fresh air passing through the combustion engine, before it is started. A first valve 12 is arranged in the pipe 9, between the inlet 14 and the outlet 15 of the said bypass duct 11. A second valve is arranged in the said bypass duct 11, at its inlet 14. The method for preheating the said catalyst three channels 4 according to the invention is described below. The electrical circuit of said heat engine is first activated in order to supply electricity, in particular, the air pump 10 and the electric catalyst 7. The throttle valve of the heat engine is then opened so as to leave air circulate in the exhaust circuit 1, the first valve 12 is closed and the second valve 13 is opened. The fresh air is thus sucked in by the air pump 10 and passes through the bypass duct 11. is activated in order to heat the fresh air and, consequently, the three-way catalyst 4 until it reaches its optimum operating temperature, for example 300°C. The time to reach the optimum operating temperature depends on the power of the vehicle's battery. Indeed, if the battery has low power, the electric catalyst 7 will be activated longer so that the three-way catalyst 4 reaches its optimum operating temperature. On the contrary, if the battery has a high power, the electric catalyst 7 will be activated for a shorter duration. An electronic module (not shown), implementing a computer program, checks, when the electric circuit is activated, the temperature of the three-way catalyst 4 in order to determine the necessary activation time (t), of said air pump 10 and said electric catalyst 7, so that the three-way catalyst 4 reaches its optimum operating temperature. The electric catalyst 7 is, for example, activated for about 10 seconds. When the electronic module determines that the optimum operating temperature has been reached, the air pump 10 is deactivated, the first valve 12 opens, the second valve 13 closes and the heat engine is started. The electric catalytic converter 7 is then deactivated less than a second after starting the internal combustion engine. In an alternative embodiment, the electric catalyst 7 is deactivated between 2 and 10 seconds after starting the heat engine. This preheating process has the advantage of making the depollution system effective by means of a three-way catalyst as soon as the gasoline combustion engine is started and thus significantly reducing the emissions of pollutants such as nitrogen oxides, carbon monoxide and unburned hydrocarbons.
L’invention décrite met en œuvre un catalyseur trois voies ayant une température de fonctionnement optimale aux alentours de 300°C. L’invention peut également être mise en œuvre pour d’autres types de catalyseur trois voies ayant des températures de fonctionnement optimales en dessous ou au-dessus de 300°C. Par ailleurs, l’invention peut aussi être appliquée à des dispositifs nécessitant d’être chauffés afin d’atteindre une température de fonctionnement plus élevée que la température ambiante.The invention described implements a three-way catalyst having an optimum operating temperature of around 300°C. The invention can also be implemented for other types of three-way catalyst having optimum operating temperatures below or above 300°C. Furthermore, the invention can also be applied to devices requiring to be heated in order to reach an operating temperature higher than the ambient temperature.
Claims (10)
- une étape d’activation du circuit électrique dudit moteur thermique ;
- une étape d’ouverture dudit papillon des gaz de manière à laisser de l’air frais circuler dans le circuit d’échappement (1) ;
- une étape de fermeture dudit premier clapet (12) et d’ouverture dudit second clapet (13) ;
- une étape d’activation de ladite pompe à air (10) afin d’aspirer de l’air frais et dudit catalyseur électrique (7) afin de réchauffer l’air frais ;
- une étape de désactivation de ladite pompe à air (10) ;
- une étape d’ouverture dudit premier clapet (12) et de fermeture dudit second clapet (13) ;
- une étape de démarrage dudit moteur thermique ;
- une étape de désactivation dudit catalyseur électrique (7).Method for preheating a three-way catalyst (4) for a gasoline heat engine implementing a preheating system (6) according to any one of claims 1 to 3, said heat engine comprising an electrical circuit and a throttle valve , said method comprising the following steps:
- a step of activating the electrical circuit of said heat engine;
- a step of opening said throttle valve so as to allow fresh air to circulate in the exhaust circuit (1);
- a step of closing said first valve (12) and opening said second valve (13);
- a step of activating said air pump (10) in order to suck in fresh air and said electric catalyst (7) in order to heat the fresh air;
- a step of deactivating said air pump (10);
- a step of opening said first valve (12) and closing said second valve (13);
- A step of starting said heat engine;
- a step of deactivating said electric catalyst (7).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1909488A FR3100275B1 (en) | 2019-08-29 | 2019-08-29 | PREHEATING SYSTEM AND METHOD FOR THREE-WAY CATALYST |
| PCT/FR2020/051228 WO2021038146A1 (en) | 2019-08-29 | 2020-07-09 | Preheating system and method for three-way catalyst |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1909488 | 2019-08-29 | ||
| FR1909488A FR3100275B1 (en) | 2019-08-29 | 2019-08-29 | PREHEATING SYSTEM AND METHOD FOR THREE-WAY CATALYST |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR3100275A1 true FR3100275A1 (en) | 2021-03-05 |
| FR3100275B1 FR3100275B1 (en) | 2021-08-06 |
Family
ID=68425111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1909488A Active FR3100275B1 (en) | 2019-08-29 | 2019-08-29 | PREHEATING SYSTEM AND METHOD FOR THREE-WAY CATALYST |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR3100275B1 (en) |
| WO (1) | WO2021038146A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4191032A1 (en) * | 2021-12-02 | 2023-06-07 | Volvo Car Corporation | Exhaust after treatment system and method for pre-heating a catalytic converter |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113431668B (en) * | 2021-08-05 | 2022-04-05 | 潍柴动力股份有限公司 | Three-way catalyst monitoring method in engine exhaust system and vehicle |
| CN113431669B (en) * | 2021-08-05 | 2022-04-26 | 潍柴动力股份有限公司 | Three-way catalyst monitoring method in engine exhaust system and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090133388A1 (en) * | 2007-11-27 | 2009-05-28 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification apparatus and exhaust gas purification method |
| US20100115927A1 (en) * | 2007-04-13 | 2010-05-13 | Keisuke Sano | Exhaust gas purifying apparatus for internal combustion engine |
| US20120204536A1 (en) * | 2011-02-10 | 2012-08-16 | GM Global Technology Operations LLC | Catalytic converter combustion strategy for a hybrid vehicle |
| WO2019033134A1 (en) * | 2017-08-17 | 2019-02-21 | Avl List Gmbh | Arrangement of an internal combustion engine with an exhaust-gas aftertreatment system and a preheating apparatus, and method for operating it |
| US20190063352A1 (en) * | 2017-08-25 | 2019-02-28 | Continental Automotive Systems, Inc. | Proactive catalyst heating |
-
2019
- 2019-08-29 FR FR1909488A patent/FR3100275B1/en active Active
-
2020
- 2020-07-09 WO PCT/FR2020/051228 patent/WO2021038146A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100115927A1 (en) * | 2007-04-13 | 2010-05-13 | Keisuke Sano | Exhaust gas purifying apparatus for internal combustion engine |
| US20090133388A1 (en) * | 2007-11-27 | 2009-05-28 | Toyota Jidosha Kabushiki Kaisha | Exhaust gas purification apparatus and exhaust gas purification method |
| US20120204536A1 (en) * | 2011-02-10 | 2012-08-16 | GM Global Technology Operations LLC | Catalytic converter combustion strategy for a hybrid vehicle |
| WO2019033134A1 (en) * | 2017-08-17 | 2019-02-21 | Avl List Gmbh | Arrangement of an internal combustion engine with an exhaust-gas aftertreatment system and a preheating apparatus, and method for operating it |
| US20190063352A1 (en) * | 2017-08-25 | 2019-02-28 | Continental Automotive Systems, Inc. | Proactive catalyst heating |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4191032A1 (en) * | 2021-12-02 | 2023-06-07 | Volvo Car Corporation | Exhaust after treatment system and method for pre-heating a catalytic converter |
| US11879373B2 (en) | 2021-12-02 | 2024-01-23 | Volvo Car Corporation | Exhaust after treatment system and method for pre-heating a catalytic converter |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3100275B1 (en) | 2021-08-06 |
| WO2021038146A1 (en) | 2021-03-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021038146A1 (en) | Preheating system and method for three-way catalyst | |
| FR2981983A1 (en) | Device for controlling pollution of exhaust gas to exhaust line of diesel engine of vehicle, has recirculation pipe extending from inlet to output upstream to pollution control unit for heating exhaust gas passing via pollution control unit | |
| FR3102210A1 (en) | PROCESS FOR ACTIVATING A POST-TREATMENT SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND ASSOCIATED DEVICE | |
| EP3535483A1 (en) | System for injecting air into a gas exhaust circuit of a supercharged heat engine | |
| FR2907162A3 (en) | Particle filter regeneration controlling method for motor vehicle, involves regulating temperature of lower wall to recommended set value of evaporation of fuel injected by injector by controlling delayed injection of fuel in chamber | |
| EP2137398B1 (en) | Exhaust gas recirculation system for a motor vehicle internal combustion engine | |
| EP3163042B1 (en) | Method for supplying power to a device for heating the exhaust gases of a drive train of a motor vehicle and associated vehicle | |
| FR2928967A1 (en) | Exhaust gas post-treatment device i.e. particle filter, regenerating method for motor vehicle's diesel engine, involves verifying whether risk situation is raised, in case of detected risk, increasing of recirculation and reducing of intake | |
| EP1650420B1 (en) | System and method for regulation of the particulate filter regeneration of an internal combustion engine | |
| FR3015563A1 (en) | ASSEMBLY COMPRISING A THERMAL MOTOR AND AN ELECTRIC COMPRESSOR | |
| EP3887660B1 (en) | Control method of a traction device for an automobile vehicle comprising an electrically heated exhaust gas aftertreatment system | |
| EP3084157B1 (en) | Exhaust system of an internal combustion engine and method for treating combustion gases | |
| EP4028652A1 (en) | Method for treating pollutants using a three-way catalyst when starting up a combustion engine | |
| FR2921685A1 (en) | Exhaust gas treating method for oil engine of motor vehicle, involves measuring oxygen quantity in exhaust gas upstream of particle filter, and controlling post-combustion fuel injection in line or in cylinders relative to measurement | |
| FR3104638A1 (en) | PROCESS FOR MANAGING THE PRIMING OF A HYBRID VEHICLE CATALYST | |
| FR3111385A1 (en) | EXHAUST DEPOLLUTION CIRCUIT, DEPOLLUTION SYSTEM INCLUDING THIS CIRCUIT, AND DEPOLLUTION PROCESS IMPLEMENTING THIS CIRCUIT | |
| FR3097009A1 (en) | LOW-MIXED MOTORIZATION AND ELECTRICALLY HEATED CATALYST | |
| FR3069023A1 (en) | METHOD FOR CONTROLLING A SUPERIOR INTERNAL COMBUSTION ENGINE COMPRISING AN ADDITIONAL COMPRESSOR. | |
| FR2919674A1 (en) | Exhaust gas orienting and regulating device for oil engine of motor vehicle, has body pivotingly mounted in manner that surface takes obturation position and collinear positions, and partition separating pipe into outlet pipes along axis | |
| FR2831603A1 (en) | Apparatus for controlling emission from IC engine comprises regenerating NOx catalyzer in internal combustion engine exhaust by keeping catalyzer near target temperature and heating it whenever engine is at low load | |
| EP1757353A1 (en) | Oxidation process for purifying combustion engine exhaust gas and system for supporting the performance of an oxidation catalyst | |
| FR2877039A1 (en) | Regeneration of particle filter mounted in exhaust line of automobile engine comprises initiating process when level of contamination of filter exceeds predetermined value, with temperature of filter increased to burn off particles | |
| EP4089268A1 (en) | Internal combustion engine equipped with means for preheating a catalyst for depolluting burnt gas | |
| FR2876737A1 (en) | Particle filter`s regeneration phase controlling system for motor vehicle, has control system for interrupting regeneration phase of filter when temperature rise, detected in downstream of filter during phase, is lesser than threshold value | |
| FR3029571A3 (en) | METHOD FOR CONTROLLING A MOTORIZATION DEVICE AND ASSOCIATED MOTORIZATION DEVICE |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PLFP | Fee payment |
Year of fee payment: 2 |
|
| PLSC | Publication of the preliminary search report |
Effective date: 20210305 |
|
| PLFP | Fee payment |
Year of fee payment: 3 |
|
| PLFP | Fee payment |
Year of fee payment: 4 |
|
| PLFP | Fee payment |
Year of fee payment: 5 |
|
| CD | Change of name or company name |
Owner name: STELLANTIS AUTO SAS, FR Effective date: 20240423 |