The invention relates to a sorption-based gas storage structure (10) comprising: - a first layer (100) comprising a sorption-based storage material, - a second layer (200) comprising: ° a first portion (201, 203) of the second layer, in contact with the first layer (100), and ° a second portion (202) of the second layer.
The invention relates to a device (1) for sorption storage of gas comprising: - a chamber (4) comprising an outer wall (40), with a structure (10) for sorption storage of gas being disposed inside the chamber (4); and - a thermally insulating layer (42) disposed between the storage structure (10) and the outer wall (40) of the chamber (4), said layer (42) also being configured to diffuse gas.
The invention relates to a sorptive gas storage device (1) comprising: a sorptive gas storage structure (10) comprising a sorptive gas storage material, said storage structure (10) having a circumferential edge (B), - heating means (3) configured to heat the storage material, and facilitate the desorption of the gas, said heating means (3) comprising: • a first heating part (30) arranged in the storage structure (10), at a distance from the circumferential edge (B), • a second heating part (32) arranged in the storage structure (10), at a distance from the circumferential edge (B) on the one hand and from the first heating part (30) on the other hand, the first heating part (30) and the second heating part (32) defining between them a space whereinto a first portion (11) of the storage structure (10) extends.
A device (100) for storing hydrogen comprising: - a first material (111) for metastable storage of hydrogen by sorption; and - a second material (121) for reversible storage of hydrogen by sorption, the device comprising a chamber (110), inside which the first material (111) is disposed, and the second material being in fluid communication with the first material, said fluid communication being direct or being implemented by means of fluid communication means, so that the second material allows reversible storage of the hydrogen desorbed by the first material.
A system for storing and supplying hydrogen to a unit (130) for using hydrogen, comprising: - a first tank (110) for storing hydrogen comprising a first material (111) for metastable storage of hydrogen by sorption; and - a second tank (120) for storing hydrogen comprising a second material (121) for reversible storage of hydrogen by sorption, a hydrogen outlet (1101) from the first tank to the second tank and/or the unit for using hydrogen; - a hydrogen outlet (1201) from the second tank to the unit for using hydrogen, so as to allow the first tank to supply a first flow of hydrogen to the unit for using hydrogen, and to allow the second tank to supply a second flow of hydrogen to the unit for using hydrogen, the second flow completing and/or replacing the first flow.
A system for storing and supplying hydrogen to a hydrogen usage unit (130), comprising: -a first hydrogen storage tank (110) comprising a first material (111) for storage of hydrogen by sorption, -a second hydrogen storage tank (120) comprising a second material (121) for reversible storage of hydrogen by sorption, -a hydrogen outlet (1101) from the first tank to the second tank and/or the hydrogen usage unit, -a hydrogen outlet (1201) from the second tank to the hydrogen usage unit, the first material having, for one and the same temperature and one and the same level of hydrogen load, a desorption equilibrium pressure which is strictly below that of the second material, so as to allow the first tank to supply a first hydrogen stream to the usage unit, and to allow the second tank to supply a second hydrogen stream to the usage unit, wherein the second stream supplements and/or replaces the first stream.
The invention relates to a device (100) for storing hydrogen, comprising: a first material (111) for storing hydrogen by sorption, a second material (112, 121) for the reversible storage of hydrogen by sorption, and a chamber (110) containing the first material (111), in which, at the same temperature and the same hydrogen loading rate, the first material has a desorption equilibrium pressure that is strictly higher than that of the second material, and the second material is in fluid communication with the first material, said fluid communication being direct or by means of fluid communication means, such that the second material allows the pressure in the chamber to be limited.
The invention relates to a system (100) for using and/or producing hydrogen, comprising: a unit comprising a first chamber (110) suitable for containing hydrogen; and means for controlling the pressure of the hydrogen in the first chamber, comprising a second chamber (120) suitable for storing hydrogen, containing a material (121) for the reversible storage of hydrogen by sorption, the first chamber and the second chamber being arranged so that the material (121) captures and/or releases hydrogen by sorption, in such a way as to limit and/or stabilise the hydrogen pressure in the first chamber (110).
A device for injecting a mixing gas into an exhaust gas exhaust line of an engine, the device comprising: one or more inlet openings, a plurality of walls comprising: o a first wall (31) and; o a second wall (32) having one or more outlet openings and being arranged downstream of the first wall, and means (36) for injecting the mixing gas between the first wall and the second wall, so as to allow the mixing gas and the exhaust gases to be mixed between the first wall and the second wall.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
04 - Huiles et graisses industrielles; lubrifiants; combustibles
06 - Métaux communs et minerais; objets en métal
07 - Machines et machines-outils
09 - Appareils et instruments scientifiques et électriques
11 - Appareils de contrôle de l'environnement
12 - Véhicules; appareils de locomotion par terre, par air ou par eau; parties de véhicules
36 - Services financiers, assurances et affaires immobilières
38 - Services de télécommunications
39 - Services de transport, emballage et entreposage; organisation de voyages
40 - Traitement de matériaux; recyclage, purification de l'air et traitement de l'eau
42 - Services scientifiques, technologiques et industriels, recherche et conception
45 - Services juridiques; services de sécurité; services personnels pour individus
Produits et services
Chemicals, ammonia, gas, hydrogen and gas mixtures for
industry, research, environment and science. Combustible compositions, especially combustible gases. Tanks, containers and receptacles, bottles, metal cartridges
for storing and transporting of gas, in particular hydrogen. Gas handling equipment, namely, mobile or stationary lifting
devices. Fuel cells, in particular for vehicles, and their component
parts, namely, anode, cathode, membranes for electrochemical
separation and electric current collector plate;
instruments for measuring and analyzing gas; software and
application software for the coordination of transport and
delivery services; software and application software for
obtaining, organizing and reserving transport and delivery
services; software and application software for planning,
scheduling, controlling, monitoring and providing
information on cartridges transport for gas storage and
transport; software and application software enabling
customers to manage and track the removal and delivery of
cartridges for gas storage and transport; software and
application software used by others for providing transport
and delivery services. Gas generators, particularly hydrogen generators; gas
distribution installations, in particular hydrogen. Vehicles; apparatus for locomotion by land, air or water;
motor vehicles, in particular trucks; vans; vans
(vehicles); motorcycles; mopeds; cycles; bicycles; gas
metal tanks, containers and cartridges for vehicles; gas
handling equipment, namely, forklifts. Insurance underwriting, financial affairs, monetary affairs;
real estate affairs; mutual funds; raising capital;
financial transactions; banking and financial services,
loan, credit and leasing services; vehicle insurance
underwriting; insurance brokerage; insurance consultancy,
information and advice; credit card services and services
regarding other electronic means of payment for purchase of
gas and for maintenance and repair of vehicles; financial
services in the field of lease-purchasing and rental of
vehicles; financial loans for vehicle repair. Telecommunication services, namely, call routing, text
messages, and notifications sent to motor vehicle operators,
couriers, and messengers; telecommunication services,
namely, call routing, text messages, and notifications sent
to customers; electronic data transmission;
telecommunications; providing access to an online site
containing information relating to transport and delivery
services and reservations of transport and delivery
services. Information and advisory services in relation to the supply,
distribution, transfer of gas, particularly hydrogen;
supply (distribution) services for electrical energy from
hydrogen-powered fuel cells; hydrogen storage services;
transport, supply (distribution), storage, packaging and
bottling of gas; gas supplying services; rental of gas
mixture bottles; organization of vehicle transports; express
delivery of goods, packages, and messages; transportation
reservation services; logistics services in the transport
sector; coordination and organizing of transport and
delivery services. Treatment of gas and chemicals; energy recycling and
recovery; chemical treatment of exhaust gases originating
from the combustion of fossil fuels; information relating
to energy treatment, recycling and recovery; fuel
transformation for energy generation; production of gas and
electricity. Design, development, updating and maintenance of software
and application software; software as a Service (SaaS);
hosting an online site containing information relating to
transport and delivery services and reservations of
transport and delivery services. Courier services for third parties.
A method for determining the quantity of reducing agent in a tank vehicle, including: a storage material in the tank for storing and releasing the reducing agent according to demand; a heating device to supply heat to release the reducing agent, and a control device for driving the heating device. After the motor vehicle is started, driving the heating device so that it delivers constant power during an initial phase over which the pressure inside the tank increases until it reaches a predetermined value. The heating device then regulating the pressure around a datum value; then measuring the time of the initial phase or the derivative of pressure with respect to time during this initial phase; and comparing the measured time against various calibrated values of the initial phase in order to determine the quantity of reducing agent in the tank.
F01N 11/00 - Dispositifs de surveillance ou de diagnostic pour les appareils de traitement des gaz d'échappement
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
G01M 15/04 - Test des moteurs à combustion interne
The disclosure relates to an ammonia storage structure in particular for the selective catalytic reduction of nitrogen oxides in the exhaust gases of combustion vehicles, including at least one storage material in which the ammonia can be stored, where the structure includes at least two different storage portions, each storage portion containing a storage material, and not all the storage materials of the different storage portions being identical. The disclosure also relates to an ammonia storage and removal system of a vehicle that includes a storage chamber, including such a storage structure. A selective catalytic reduction system for internal combustion engine exhaust gases, includes such an ammonia storage system and to a module for feeding ammonia into the exhaust gases.
F01N 11/00 - Dispositifs de surveillance ou de diagnostic pour les appareils de traitement des gaz d'échappement
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
Ammonia storage structure, characterized in that it comprises an alternation:—of at least one ammonia storage layer, and—of at least one layer of a thermally conductive material of a thermal conductivity higher than that of the storage layer, the at least one layer of thermally conductive material being intended to increase heat transfers within the structure.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
B65D 81/38 - Réceptacles, éléments d'emballage ou paquets pour contenus présentant des problèmes particuliers de stockage ou de transport ou adaptés pour servir à d'autres fins que l'emballage après avoir été vidés de leur contenu avec isolation thermique
F01N 3/24 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les aspects de structure de l'appareillage de conversion
Construction module of a structure (100) for ammonia storage, said structure (100) comprising at least one layer of salt (110) suitable for an adsorbing or absorbing ammonia, the module comprising attachment means (11, 13, 51) for attaching said module to at least one other module.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
16.
DEVICE AND PROCESS FOR RELOADING AN AMMONIA CARTRIDGE FOR REDUCTION OF NITROGEN OXIDES BY SELECTIVE CATALYTIC REDUCTION IN A VEHICLE
The invention for reloading a cartridge with ammonia for the reduction of nitrogen oxides by selective catalytic reduction, comprising means for memorizing characteristics of the cartridges to be reloaded, said means comprising memory zones for a type of cartridge to be reloaded, means for identifying the type of cartridge in order to recognize the type of cartridge, reloading means for ensuring the reloading of the cartridge with a desired amount of ammonia, said reloading means comprising means for receiving said reloading parameters from memorizing means, a unit for manufacturing ammonia on demand, as a function of a manufacturing instruction, means for controlling the manufacturing unit, in order to transmit to the manufacturing unit a manufacturing setting corresponding to said amount, supply means for carrying out the reloading of the cartridge with said amount, said supply means comprising means for cooling the cartridge.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
B01D 53/94 - Épuration chimique ou biologique des gaz résiduaires des gaz d'échappement des moteurs à combustion par des procédés catalytiques
A system for storing and delivering gaseous ammonia to a consumer unit (30) including: a plurality of gaseous ammonia storage cells (10) each including: a storage material (102) that is a gaseous ammonia absorber, a pressure adjuster for adjusting an internal pressure of each cell independently of the other cells of the plurality, including a heater (106), an outlet interface (40) connecting the plurality of cells (10) to the consumer unit (30) allowing gaseous ammonia to leave the cell (10) when the internal pressure is higher than a pressure downstream, a control device (50) common to the plurality of cells (10) allowing control, independently of the other cells of the plurality, of the activity of each cell (10) in delivering ammonia to the outlet interface (40) using a controller (502) which controls the heater (106) for the pressure adjuster (10).
F17C 11/00 - Utilisation de solvants ou d'absorbants des gaz dans les récipients
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
The invention relates to an ammonia storage structure (7) in particular for the selective catalytic reduction of nitrogen oxides in the exhaust gases of combustion vehicles, including at least one storage material in which the ammonia can be stored, characterized in that said structure includes at least two different storage portions, each storage portion containing a storage material, and not all the storage materials of the different storage portions being identical. The invention also relates to an ammonia storage and removal system of a vehicle that includes a storage chamber, including such a storage structure. The invention further relates to a selective catalytic reduction system for internal combustion engine exhaust gases, including such an ammonia storage system and to a module for feeding ammonia into the exhaust gases.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
The invention relates to an ammonia storage structure in particular for the selective catalytic reduction of nitrogen oxides in the exhaust gases of combustion vehicles, characterized in that said structure includes at least one element for storing a gas such as ammonia, in the form of a porous matrix, with which means for irrigating the storage element are associated. The invention also relates to an ammonia storage and removal system of a vehicle that includes a storage chamber receiving such a storage structure, a selective catalytic reduction system for internal combustion engine exhaust gases, including such an ammonia storage system and to a module for feeding ammonia into the exhaust gases, and, finally, to a monolithic porous matrix for storing a gas, characterized in that said matrix contains the irrigation means in the interior thereof, in order to promote the sorption/desorption of the gas in the matrix.
B01J 20/28 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation caractérisées par leur forme ou leurs propriétés physiques
B01D 53/94 - Épuration chimique ou biologique des gaz résiduaires des gaz d'échappement des moteurs à combustion par des procédés catalytiques
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
B01J 20/04 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique contenant des composés des métaux alcalins, des métaux alcalino-terreux ou du magnésium
B01J 20/02 - Compositions absorbantes ou adsorbantes solides ou compositions facilitant la filtrationAbsorbants ou adsorbants pour la chromatographieProcédés pour leur préparation, régénération ou réactivation contenant une substance inorganique
F17C 11/00 - Utilisation de solvants ou d'absorbants des gaz dans les récipients
The invention relates to an ammonia storage structure (7) in particular for the selective catalytic reduction of nitrogen oxides in the exhaust gases of combustion vehicles, including at least one storage material in which the ammonia can be stored, characterized in that said structure includes at least two different storage portions, each storage portion containing a storage material, each storage portion being associated with a corresponding heating element, such that the two storage portions can be heated differently with a view to releasing the ammonia thereof differently. The invention also relates to an ammonia storage and removal system of a vehicle that includes a storage chamber, including such a storage structure. The invention further relates to a selective catalytic reduction system for internal combustion engine exhaust gases, including such an ammonia storage system and to a module for feeding ammonia into the exhaust gases.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
21.
Method for determining the quantity of reducing agent in a tank
A method for determining the quantity of reducing agent in a tank of a motor vehicle, including: a storage material in the tank for storing and releasing the reducing agent according to demand; a heating device to supply heat to release the reducing agent, and a control device for driving the heating device. After the motor vehicle is started, driving the heating device so that it delivers constant power during an initial phase over which the pressure inside the tank increases until it reaches a predetermined value. The heating device then regulating the pressure around a datum value; then measuring the time of the initial phase or the derivative of pressure with respect to time during this initial phase; and comparing the measured time against various calibrated values of the initial phase in order to determine the quantity of reducing agent in the tank.
G01M 15/04 - Test des moteurs à combustion interne
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
F01N 11/00 - Dispositifs de surveillance ou de diagnostic pour les appareils de traitement des gaz d'échappement
A system for storing and delivering gaseous ammonia to a consumer unit (30) comprises: a plurality of gaseous-ammonia storage cells (10) each comprising: a storage material (102) that absorbs gaseous ammonia, a means of adjusting an internal pressure of each cell independently of the other cells of the plurality, comprising a heating means (106), an outlet interface (40) connecting the plurality of cells (10) to the consumer unit (30) allowing gaseous ammonia to leave the cell (10) when the internal pressure is higher than a pressure downstream, a control device (50) common to the plurality of cells (10) allowing control, independently of the other cells of the plurality, of the activity of each cell (10) in delivering ammonia to the outlet interface (40) using means (502) that control the means (106) of adjusting the internal pressure of the plurality of cells (10).
Unit for storing gas by absorption or adsorption, comprising a chamber containing a storage element (702, 704) that stores gas by absorption or adsorption, characterized in that it further comprises a compressible element (712) also provided within the chamber and kept in contact with the storage element (702, 704) and designed to deform under the action of loads applied by the storage element (702, 704) upon variations in volume of the storage element (702, 704) during phases of storing gas and releasing gas from storage, so as to limit the loads applied to the chamber.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
Method for gauging the autonomy of a system for storing and delivering gaseous ammonia to a consumer unit (3), the system comprising: a gaseous-ammonia storage cell (8) comprising a dedicated heating means (9), and at least one sensor (61, 64) of at least one parameter of the system, the method comprising steps consisting in: controlling the system on the basis of an intrusive reference datum independent of an ammonia demand from the consumer unit (3), during the control step, taking an intrusive measurement of at least one parameter of the system using the sensor (61, 64), and comparing the intrusive measurement against a threshold value of at least one parameter under the control conditions in order to estimate the autonomy of the system with respect to a filling threshold of the cell (8) that corresponds to the threshold value of the parameter.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
25.
AMMONIA STORAGE STRUCTURE AND ASSOCIATED SYSTEMS AND METHOD
Ammonia storage structure, characterized in that it comprises an alternation: - of at least one ammonia storage layer, and - of at least one layer of a thermally conductive material of a thermal conductivity higher than that of the storage layer, the at least one layer of thermally conductive material being intended to increase heat transfers within the structure.
c to inject the agent upstream of the converter, a heat exchanger 2 containing a porous matrix, a shutter or injector 11 to control the flow rate of the agent to the exchanger, a valve 12 between the storage space and exchanger, to transfer thermal energy to gases during the starting period. The shutter or injector controls the flow of agent into the exchanger during the starting period to raise its temperature, and is closed when gases have reached a certain temperature. The valve regulates exchanger pressure during a period at operating temperature and conveys the agent to storage space when the exchanger pressure is higher than storage space pressure.
B01D 53/94 - Épuration chimique ou biologique des gaz résiduaires des gaz d'échappement des moteurs à combustion par des procédés catalytiques
F01N 3/10 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement
F01N 3/18 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
27.
METHOD FOR DETERMINING THE QUANTITY OF REDUCING AGENT IN A TANK
The present invention relates to a method for determining the quantity of reducing agent in a tank (10) of a system intended to reduce the amount of NOx in the exhaust gases of a motor vehicle. The system comprises: a storage material (11) arranged in the tank (10) and capable of storing and of releasing the reducing agent reversibly according to the demand for reducing agent which may vary over the course of time; a heating device (12) designed to supply heat in order to release the reducing agent from the storage material (11), and a control device (13) for driving the heating device (12) in order to release the reducing agent. The method involves the following steps: a) as soon as the motor vehicle is started, driving the heating device (12) so that it delivers constant power during a phase known as the initial phase over which the pressure inside the tank (10) increases until it reaches a predetermined value, the driving of the heating device (12) then being adapted in order to regulate the pressure around a datum value; b) measuring the time of the initial phase or the derivative of pressure with respect to time during this initial phase; c) comparing the measured time of the initial phase, said derivative of pressure with respect to time or a combination of both against various calibrated values of the initial phase according to the quantity of reducing agent in the tank (10) in order to determine said quantity of reducing agent in said tank (10).
F01N 11/00 - Dispositifs de surveillance ou de diagnostic pour les appareils de traitement des gaz d'échappement
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
28.
DEVICE FOR MEASURING A QUANTITY OF A REDUCING AGENT, PREFERABLY NH3, CONTAINED IN A VESSEL
The invention relates to a device for measuring a quantity of a reducing agent, preferably NH3, contained in a vessel (10; 110; 210) containing a storage material (11; 111; 211) in which the reducing agent is stored, the volume of the storage material (11; 111; 211) varying depending on the quantity of reducing agent that it contains. The measuring device comprises means (13, 14, 14'; 113, 114; 213, 214) associated with the vessel (10; 110; 210), said means being suitable for measuring the quantity of the reducing agent stored in the storage material (11; 111; 211) depending on the volume of the latter.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
F17C 11/00 - Utilisation de solvants ou d'absorbants des gaz dans les récipients
G05D 9/00 - Commande du niveau, p. ex. en commandant la quantité du matériau emmagasiné dans un réservoir
G05D 15/00 - Commande de la force ou de la contrainte mécaniqueCommande de la pression mécanique
29.
SYSTEM INTENDED TO REDUCE THE AMOUNT OF NOX IN THE EXHAUST GASES OF A MOTOR VEHICLE
The invention relates to a system intended to reduce the amount of NOx in the exhaust gases of a motor vehicle. The system comprises a storage space (1) containing a reducing agent; an SCR (selective catalytic reduction) catalytic converter (5) for treating the exhaust gases laden with reducing agent, and an injection module (6c) designed to inject the reducing agent from the storage space (1) into the exhaust gases of the motor vehicle upstream of the SCR catalytic converter (5). The system further comprises: at least one heat exchanger (2) connected to the storage space (1) and containing a porous matrix intended to absorb the reducing agent originating from the storage space (1); a valve or an injector (11) downstream of the storage space (1) and upstream of the exchanger (2) and designed to control the addition of reducing agent to the exchanger (2), and a valve (12) positioned between the storage space (1) and the exchanger (2). This is designed to transfer thermal energy to the exhaust gases of the motor vehicle upstream of the SCR catalytic converter (5) during a first period known as the starting period following the starting of said vehicle. The valve or the injector (11) is designed to control the rate of flow of reducing agent into the exchanger (2) during said starting period so that the absorption of the reducing agent by the porous matrix of the exchanger (2) raises the temperature thereof. The valve or the injector (11) is also designed then to be closed during a period known as the period at operating temperature when the motor vehicle is running as soon as the exhaust gases have reached a certain temperature. The valve (12) is designed firstly to regulate the pressure inside the exchanger (2) during said period at operating temperature and secondly to convey the reducing agent contained in the exchanger (2) to the storage space (1) when the pressure inside the exchanger (2) is higher than the pressure inside the storage space (1).
F01N 5/02 - Silencieux ou dispositifs d'échappement combinés ou associés à des dispositifs bénéficiant de l'énergie des gaz évacués les dispositifs utilisant la chaleur
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
F01N 3/02 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour refroidir ou pour enlever les constituants solides des gaz d'échappement
F01N 3/08 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs
30.
METHOD FOR REDUCING THE AMOUNT OF NOX IN THE EXHAUST GASES OF A MOTOR VEHICLE
The invention relates to a method for controlling a system for reducing the amount of NOx in the exhaust gases of a motor vehicle. The system comprises a storage chamber (8) which contains a pollutant-removing agent and which is arranged such that the temperature thereof is controlled by a heating device (9). The system further comprises a supply module (6) arranged so as to inject the pollutant-removing agent into the exhaust gases, the supply module (6) comprising a device for measuring the pressure (6a) or the temperature inside the storage chamber (8), as well as a device (6b) for proportioning the pollutant-removing agent. The control method involves, for example: defining a predetermined moving criterion, in particular on the basis of the engine torque during a first period; filtering the moving criterion with a filtering period (T1) corresponding to the first period; comparing the filtered moving criterion with various thresholds in order to determine a type of moving; determining the elapsed time for each type of moving during a second period (T2) in order to associate a trend representing moving conditions throughout said second period; calculating a set pressure or set temperature according to the type and the trend representing past moving conditions; comparing the set pressure or set temperature with the pressure or temperature measured by the pressure- or temperature-measuring device (6a); and heating the storage chamber (8) if the pressure or temperature inside the latter is lower than the set pressure or set temperature.
F01N 3/20 - Silencieux ou dispositifs d'échappement comportant des moyens pour purifier, rendre inoffensifs ou traiter les gaz d'échappement pour rendre les gaz d'échappement inoffensifs par conversion thermique ou catalytique des composants nocifs des gaz d'échappement caractérisés par les méthodes d'opérationCommande spécialement adaptés à la conversion catalytique
F01N 9/00 - Commande électrique des appareils de traitement des gaz d'échappement
