Saint-Gobain Centre De Recherches Et D'etudes Europeen

Saint-Gobain Glass France

Saint-Gobain Centre De Recherches

Saint-Gobain Sekurit France

Vincent Gleize

Sébastien Bardon

Anthony Briot

Sebastien Remi Bardon

Gaëtan Champagne

Isabelle Cabodi

Flavien Fremy

Matthieu Graveleau

Adrien Carlu

Matteo Scalabrino

Paul Leplay

Alexane Margossian

Mickael Boinet

Patrick Jacques Dominique Girot

Olivier Citti

Céline Wiss

Patricia Andy

Nicolas Bonnail

Jean-Gaël Vuillermet

Patrick Girot

Mickaël Boinet

Christophe Carrie

Sébastien Saint-Gobain Bardon

A computer-implemented method for measuring the three-dimensional geometry of a mineral glass-based glazing during or just after a temperature shaping operation. The method implements digital processing and calculations, based on the principles of stereocorrelation, of digital images of a random light pattern projected onto the surface of a transparent glazing. It makes it possible in particular to determine the shape or the three-dimensional geometry of a transparent glazing, the surface of which not be totally opacified and/or which radiates under the effect of temperature.

Method for measuring the geometry of a glazing by projection of a random light pattern

A glass furnace including a refractory portion defining a hot face in contact or intended to be in contact with molten glass or with a gaseous environment in contact with molten glass, and a cold face at a distance from the hot face, and a temperature measurement device. The temperature measurement device including a waveguide that includes a measurement portion including at least one temperature measurement sensor configured to send a response signal in response to the injection of an interrogation signal into the waveguide. The temperature measurement device including an interrogator connected to an input of the waveguide and configured to inject the interrogation signal into the input, to receive the response signal returned by the sensor in response to the injection of the interrogation signal, to analyze the response signal received and to transmit a message according to the analysis.

Glass furnace provided with optical fibers

A device that includes a piece of armor made from a material that has a domain of plastic deformation under bad before breaking and an elastic deformation domain. The plastic deformation domain represents less than 1% of the elastic deformation domain. The device includes a deformation sensor fixed to the piece of armor and configured to deform plastically under the effect of at least a stress applied to the piece of armor and leading to damage of the piece of armor.

Device for checking armor

Jointing cement intended in particular for fastening together a plurality of filter blocks of a filtering body of an exhaust gas particle filter of an internal combustion engine of a motor vehicle, having a silicon carbide (SiC) content of between 30% and 90%. The cement according to the invention includes at least 0.05% and less than 5% of a thermosetting resin, the percentages being percentages by weight relative to the total weight of the thermosetting resin and the mineral material, apart from the possible water.

Cement for particle filter

Jointing cement intended in particular for fastening together a plurality of filter blocks of a filtering body for filtering exhaust gas particles of an internal combustion engine of a motor vehicle, the cement including, in percentages by weight relative to the weight of the mineral material, apart from possible water and a possible mineral resin,

Jointing cement containing hollow spheres, for a particle filter

The present invention relates to a structure, for filtering particulate-laden gases, of the honeycomb type and containing an assembly of adjacent ducts or channels, whose axes are parallel to one another, separated by porous walls, the ducts being sealed off by plugs at one or other of their ends so as to form inlet chambers opening onto a gas entry face and outlet chambers opening onto a gas exit face, in such a way that the gas to be filtered passes through the porous walls, wherein said walls comprise material based on silicon carbide and the walls have an open porosity of between 30 and 53%; a median pore diameter of between 9 and 20 &#x3bc;m; the average number of open pores on the surface of the walls, the opening area of which is between 20 and 310 &#x3bc;m, is greater than 300 per mmof wall; and the ratio of the total opening area of said open pores to said area of the walls is between 0.15 and 0.30.

Silicon carbide based structure for filtrating gas

The invention relates to a method of obtaining a homogeneous filtering structure for a catalytic application, which can be used as a particulate filter in an internal combustion engine exhaust line, said structure comprising a plurality of honeycomb filter elements in which a homogeneity criterion characteristic of the constituent support material of said elements, in the absence of a catalytic coating, is determined in a prior step, and then the elements making up the structure are selected by means of this homogeneity criterion so as to obtain a structure suitable for homogeneous deposition, within an element and from one element to another, of a catalyst for treating the pollutants in gas phase. The invention also relates to the homogeneous filtration structure obtained by said method.

Method for obtaining a homogeneous filtering structure for a catalytic application

A block, particularly for filtering particulates present in the exhaust gases of an internal combustion engine, includes a plurality of flow channels for the gases (14,14), each of the channels (14,14) being bounded by a side wall (), a plug (15,15) and an opening (19,19) terminating outwardly. The block according to the invention is remarkable in that a first portion () of the side wall () of at least one of the channels (14,14&#x2033;), called the 'reinforced channel', includes a reinforcement compared to the rest of the side wall () forming a second portion () of the side wall (), the ratio (R) of the thickness of the first portion () to the thickness of the second portion (), in any transverse plane of section (P), being between 1.1 and 3.

Block for filtering particles contained in exhaust gases of an internal combustion engine

A filter block, particularly for filtering particulates present in the exhaust gases of an internal combustion engine, including peripheral inlet () and outlet () channels arranged alternately at the periphery of the block and each including an external wall () exposed to the exterior of the block and an internal wall () arranged inside the block. The block according to the invention is remarkable in that it includes at least one group (G) of two adjacent peripheral channels () such that, in a transverse plane of section (P), the ratio R of the average thickness 'E' of all the external walls () of the group (G) to the average thickness 'e' of all the internal walls () of the (G) is greater than 1.2.

One subject of the invention is a process for checking the robustness of a particulate filter intended to be used in the exhaust line of a diesel engine, comprising the steps consisting in, having first determined the soot mass limit of the filter, loading a new filter with a level of soot at least equal to two times and at most equal to three times the soot mass limit, then making the filter undergo a severe regeneration then, in any order, determining the filtration efficiency of the filter, measuring its pressure drop and comparing it to the pressure drop of the new filter, measuring its level of cracking, and finally checking its integrity after a mechanical stress. Another subject of the invention is a method for diagnosing the robustness of a filter.

Methods for controlling and making particle filtering devices

This structure () comprises first and second filtering elements (A,B) extending essentially parallel to a longitudinal axis (X-X') of the structure () between an admission region () of the gases into the structure () and an evacuation region () of the gases from the structure, and comprises a seal () for joining these elements (A,B). The seal () comprises at least one downstream pat () which has a thermal mass per unit length greater than the thermal mass per unit length of an upstream part () of the seal (). The invention is for use in particulate filters for the exhaust gases of a motor vehicle diesel engine.

Structure for filtering exhaust gases of an internal combustion engine, and associated exhaust line

This structure comprises first and second filtering elements (A,B) which are respectively provided with a first and a second face (A,B) arranged opposite each other and a seal () connecting said faces (A,B). The first face (A) comprises at least a first region (A) that does not adhere, or only slightly adheres to said seal (), opposite a first region (B) that strongly adheres to said seal () of the second face (B). The first region (A) that does not adhere or only slightly adheres is delimited by at least a portion of the edge () common to the first face (A) and a discharge face (). The first region (A) that does not adhere or only slightly adheres comprises a side (A) that diverges towards the discharge face () and which extends up to said common edge ().

Filtering structure, especially particle filter for exhaust gases of an internal combustion engine, and associated exhaust line

A filter block for filtering particles contained in the exhaust gas of an internal combustion engine includes a plurality of channels for the circulation of the gas, a channel defined by a wall provided with a filtering zone and which opens out towards the outside via an opening, a group of channels including at least two channels with different respective F/P ratios between surface F of the filtering zone and surface P of the wall. One channel of the group of channels includes an opening whose surface O is larger than the surface F of the filtering zone of the channel.

Filter block for filtering particles contained in the exhaust gas of a combustion engine

A filtering body (), in particular for a motor vehicle internal combustion engine exhaust gas particulate filter (), includes a plurality of filtering units () assembled by at least a joint () interposed between the filtering units () and configured so as to counter the passage of exhaust gases between the filtering units (). The filtering body is characterized in that the joint () comprises a plurality of joint portions () locally adapted to optimize the attenuation of thermomechanical stresses liable to be generated in the filtering body ().

Growing community of inventors

Avignon, France

Vincent Gleize