Institut Francais Du Pe'trole

Aaqius & Aaqius Sa

Peugeot Citroen Automobiles Sa

Institut Francias Du Petrole

Airmees

Airmeex S.a.

Jean-Baptiste Dementhon

Brigitte Martin

Michael Francis Levy

Michel Castagne

Rémi Noirot

Olivier Pajot

Philippe Courty

Arnaud Audouin

Jacques Lavy

Matthias Bouchez

Fabienne Pourchet

Daniel Blancotto

Jean Pierre Joulin

Turkay Erol

Bruno Bourry

Daniel Biancotto

Unit for storing gas by absorption or adsorption, comprising a chamber containing a storage element () that stores gas by absorption or adsorption, characterized in that it further comprises a compressible element () also provided within the chamber and kept in contact with the storage element () and designed to deform under the action of loads applied by the storage element () upon variations in volume of the storage element () during phases of storing gas and releasing gas from storage, so as to limit the loads applied to the chamber.

Gas storage unit and associated structure and system

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, where the structure includes at least one element for storing a gas such as ammonia, in the form of a porous matrix, with which an irrigating device the storage element are associated. The disclosure 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, where the matrix contains the irrigation device in the interior thereof, in order to promote the sorption/desorption of the gas in the matrix.

Ammonia storage structure and associated systems

Method for gauging the autonomy of a system for storing and delivering gaseous ammonia to a consumer unit (), the system comprising: a gaseous-ammonia storage cell () comprising a dedicated heating means (), and at least one sensor () 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 (), during the control step, taking an intrusive measurement of at least one parameter of the system using the sensor (), 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 () that corresponds to the threshold value of the parameter.

Gauging the autonomy of a system for storing and delivering gaseous ammonia

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.

Ammonia storage structure, characterized in that it comprises an alternation:&#x2014;of at least one ammonia storage layer, and&#x2014;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.

Ammonia storage structure and associated systems and method

A system for storing and delivering gaseous ammonia to a consumer unit () including: a plurality of gaseous ammonia storage cells () each including: a storage material () 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 (), an outlet interface () connecting the plurality of cells () to the consumer unit () allowing gaseous ammonia to leave the cell () when the internal pressure is higher than a pressure downstream, a control device () common to the plurality of cells () allowing control, independently of the other cells of the plurality, of the activity of each cell () in delivering ammonia to the outlet interface () using a controller () which controls the heater () for the pressure adjuster ().

System for storing and delivering gaseous ammonia

System to reduce the amount of NOx in exhaust gases of a vehicle. The system includes a storage spacecontaining an agent, a SCR catalytic converter, an injection moduleto inject the agent upstream of the converter, a heat exchangercontaining a porous matrix, a shutter or injectorto control the flow rate of the agent to the exchanger, a valvebetween 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.

System intended to reduce the amount of NOx in the exhaust gases of a motor vehicle

A method is intended for desulfation of a nitric oxide trap () and regeneration of a particle filter () arranged in an exhaust line () for treating exhaust gas from an internal-combustion engine (), notably a Diesel engine. The saturation rate of the trap and the clogging rate of the filter are evaluated and, as soon as one of the rates reaches a threshold value, the fuel/air ratio of the exhaust gas is increased without it reaching a fuel/air ratio of 1, then desulfation of trap () is performed in association with regeneration of particle filter ().

Method and device intended for desulfation of a nitric oxide trap and regeneration of a particle filter

The invention relates to a method for regenerating a particle filter () integrated into an exhaust line () of an internal combustion engine (), wherein the exhaust gas flows into the filter via an inflow surface () and exit the filter via an outflow surface (). According to the invention, the internal temperature of at least two regions of the filter () is monitored during regeneration of the filter; the oxygen content of the exhaust gas is reduced if at least one of the monitored temperatures rises above a critical temperature; the oxygen content of the exhaust gas is increased in order to continue regeneration if all of the monitored temperatures are below said critical temperature.

Method and device for regenerating a particle filter integrated into an exhaust line of an internal combustion engine

The present invention relates to a method for regenerating a particle filter () arranged in the exhaust line () of an internal-combustion engine, notably of diesel type, wherein the clogging state of the filter is evaluated, this state is compared with a threshold value, then, if this threshold value is exceeded, a fluid and a fuel are mixed together, this mixture is subjected to catalytic combustion to generate the hot gases required for regeneration of the filter and regeneration of the filter is carried out by means of hot gases flowing through said filter and whose temperature is sufficiently high to provide combustion of the particles retained in this filter. According to the invention, prior to mixing the fluid and the fuel, the temperature of the fluid is raised up to the catalytic combustion light-off temperature.

Particle filter regeneration method with catalytic combustion device and filtration installation using such a method

Combustion control by particle filter regeneration

A monolithic honeycomb-type structure useful in particular as a particle filter for exhaust gases from diesel engines has a number of passages that empty into the end faces of said monolith, but are alternately open and sealed. The monolith consists of a porous refractory material that comprises: 70 to 97% by mass of &agr; and/or &bgr; crystallographic-type silicon carbide that has at least one particle size and preferably at least two particle sizes, and 3 to 30% by mass of at least one bonding ceramic phase in the form of a micronic powder or particles that are obtained by atomization, comprising at least one simple oxide, for example, B O , Al O , SiO , MgO, K O, Li O, Na O, CaO, BaO, TiO, ZrO and Fe O and/or at least one mixed oxide, for example, the alkaline aluminosilicates (of Li, Na, or K) or alkaline-earth aluminosilicates (of Mg, Ca, Sr or Ba), clays, bentonite, feldspars or other natural silico-aluminous materials. The production of the monolith comprises a calcination stage under an oxygen-containing atmosphere at a temperature up to 1650&deg; C., but less than 1550&deg; C.

Monolithic honeycomb structure made of porous ceramic and use as a particle filter

A process and device for local permeability evaluation and local regeneration of a particle filter consisting of several juxtaposed zones through which a flow of gas to be scrubbed is passed include the steps of and apparatus for measuring the temperature of the flow upstream from the filter, measuring the temperature in at least one of the zones forming the filter, evaluating the thermal inertia of at least one of the zones by relative measurement of the temperature or of the local resistance to the temperature upstream from the filter, deducing from this the local permeability of the filter and locally regenerating the filter.

Process and device for local and controlled regeneration of a particle filter

A device intended to measure fouling and to locally heat an electrical insulating medium. At least one electrically resistive heating element (6, 8) is associated with a fouling detection unit. The fouling detection unit includes metallic elements (6, 10) in contact, at at least two points, with the insulating medium. The resistance variation between the two points is measured and is directly linked with the fouling of the medium.

Device intended to detect fouling and to locally heat an electrical

The present invention is a filtering unit providing after-treatment of the gases emited in the exhaust of Diesel engines, comprising a filtering set which includes at least one filtering element (11, 12, 13); at least one resistive element (3) which heats a zone (121, 122, 123) of one of the at least one filtering element; at least one detection device which determines fouling of the filtering set (1); a control (5), responsive to the at least one detection device, which controls independently each of the resistive elements, according to the fouling of the filtering set and electrical power available to the at least one resistive element. The resistive elements (3) can be each wound around a zone of a filtering element. The invention further relates to the associated process.

Growing community of inventors

Paris, France

Jean-Baptiste Dementhon