Abstract: A filter block, particularly for filtering particulates present in the exhaust gases of an internal combustion engine, including peripheral inlet (50,14p2) and outlet (52,14p1) channels arranged alternately at the periphery of the block and each including an external wall (44;54 ;401,402;403) exposed to the exterior of the block and an internal wall (46 ;56 ;404,405 ;406,407,408) 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 (50,52) such that, in a transverse plane of section (P), the ratio R of the average thickness “E” of all the external walls (44,54) of the group (G) to the average thickness “e” of all the internal walls (46,56) of the (G) is greater than 1.2.

Abstract: The invention relates to a filtration structure (11) consisting of: first and second filtration elements (15A, 15B) which comprise respectively a first face and a second face (24A, 24B), said faces being disposed opposite one another; and a connecting joint (17) which extends between the faces (24A, 24B) and connects same. The aforementioned joint (17) comprises a binder (41) and reinforcing means (43) which are embedded therein. The reinforcing means (43) comprise an open-work reinforcing member having an autonomous coherence and comprising an essentially-flat active part (45). The invention is suitable for particle filters for the exhaust gases from an internal combustion engine.

Abstract: The structure comprises at least first and second filter members (15A, 15B) respectively provided with first and second faces (24A, 24B) placed facing each other, and a joint (17) interconnecting said faces and extending between said faces (24A, 24B). The first face (24A) comprises at least one region (33A) of strong adhesion with said joint (17) and at least a region (35A) of weak or no adhesion with the joint (17). These regions (33A, 35A) are located respectively facing a region (35B) of the second face (24B) presenting weak or no adhesion with said joint (17), and a region (35B) of the second face (24B) presenting strong adhesion with said joint (17). The structure is applicable to particle filters for the exhaust gas from an internal combustion engine.

Abstract: A filter body (3) which is intended, in particular, for the filtration of particles contained in the exhaust gases from an internal combustion engine. The filter body (3) is formed by bonding filter blocks (11) using a joint (17). An outer surface (16) of the first of the blocks (11), which is disposed opposite the second of the blocks (11) and which is in contact with the joint (17), includes at least one projection- and/or cavity-type irregularity (30a, 30b).

Abstract: The inventive filter unit for filtering particles contained in exhaust gas of an internal combusting engine comprises sets of imbricated input channels (10, 11) and adjacent output channels (12, 13) which are fluidly communicating by means of the lateral walls thereof. Said lateral walls are cross-sectionally provided with a corrugation which is determined in such a way that the total volume of the input channels (10, 11) is increased with respect to that of the output channels (12, 13), whereby the total volume (Ve) of the input channels (10, 11) being greater than that (Vs) of the output channels (12, 13).

Abstract: 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.

Abstract: A particulate filter for purifying exhaust gases of an internal combustion engine, in particular of a diesel engine, comprises a filtering body and heating elements for initiating combustion of soot particles accumulated on and in the filtering body. The heating elements comprise at least a hot spot ceramic ignitor (3). The invention is applicable in the automotive industry.

Abstract: The invention concerns a filtering body (7) consisting of a plurality of adjacent channels through the walls of which the exhaust gases are filtered. It comprises first (12 to 23) and second (8 to 11) filtering zones, the surface filtering the gases, relative to the unit area of the gas intake of the body (7), being different in the first (12 to 23) and second (8 to 11) zones. The invention is applicable to a diesel engine.

Abstract: 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 (1) the filter (F) when the engine (M) delivers an engine torque at a predetermined low threshold (Cbas).

Abstract: A filtering body (3), in particular for a motor vehicle internal combustion engine exhaust gas particulate filter (1), includes a plurality of filtering units (11a-11i) assembled by at least a joint (12) interposed between the filtering units (11a-11i) and configured so as to counter the passage of exhaust gases between the filtering units (11a-11i). The filtering body is characterized in that the joint (12) comprises a plurality of joint portions (12a-12e) locally adapted to optimize the attenuation of thermomechanical stresses liable to be generated in the filtering body (3).

Abstract: The invention concerns a filtering body (7) consisting of a plurality of adjacent channels through the walls of which the exhaust gases are filtered. It comprises first (12 to 23) and second (8 to 11) filtering zones, the surface filtering the gases, relative to the unit area of the gas intake of the body (7), being different in the first (12 to 23) and second (8 to 11) zones. The invention is applicable to a diesel engine.

Abstract: A particulate filter for purifying exhaust gases of an internal combustion engine, in particular of a diesel engine, comprises a filtering body and heating elements for initiating combustion of soot particles accumulated on and in the filtering body. The heating elements comprise at least a hot spot ceramic ignitor (3). The invention is applicable in the automotive industry.