Saint-gobain Centre De Recherches Et D'etudes Europeen

Capsum

Sebastien Remi Bardon

Vincent Gleize

Patricia Andy

Jerome Bibette

Mathieu Goutayer

Yan Eric Pafumi

Anthony Briot

Thomas Delmas

Patrick Jacques Dominique Girot

Ahmed Marouf

William Pierre Mustel

Carine Barataud-Dien

The device () for dispensing a fluid composition includes: a container () containing a heterogeneous mixture ();

Element for delivering a fluid composition, associated dispensing device and associated method

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

The invention relates to a honeycomb structure, made from a porous ceramic material, said structure being characterized in that the porous ceramic material which forms it comprises: from 50 to 95% by weight of silicon carbide SiC; from 5 to 50% by weight of at least one ceramic oxide phase, said structure additionally being characterized by a porosity greater than 10%, by a specific surface area greater than 0.5 m/g and by a pore size distribution of at least bimodal type. The invention also relates to the process for obtaining such a structure and also to the catalytic support or filter obtained from such a structure, after deposition of a catalyst.

High specific surface silicon carbide catalytic filter and support

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

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 ().

Filtering body comprising a plurality of filtering units, in particular designed for a particulate filter

A method is provided for backwashing, by heating, a particulate filter to be purified of exhaust gases (G) of an internal combustion engine (M), in particular an internal combustion engine equipping a motor vehicle (V). The method includes controlling the start-up of a device for heating () the filter (F) when the engine (M) delivers an engine torque at a predetermined low threshold (C).

Growing community of inventors

Lyons, France

Sebastien Remi Bardon