摘要:
This structure comprises first and second filtering elements (15A, 15B) which are respectively provided with a first and a second face (24A, 24B) arranged opposite each other and a seal (17) connecting said faces (24A, 24B). The first face (24A) comprises at least a first region (35A) that does not adhere, or only slightly adheres to said seal (17), opposite a first region (33B) that strongly adheres to said seal (17) of the second face (24B). The first region (35A) that does not adhere or only slightly adheres is delimited by at least a portion of the edge (37) common to the first face (24A) and a discharge face (23). The first region (35A) that does not adhere or only slightly adheres comprises a side (41A) that diverges towards the discharge face (23) and which extends up to said common edge (37).
摘要:
This structure comprises first and second filtering elements (15A, 15B) which are respectively provided with a first and a second face (24A, 24B) arranged opposite each other and a seal (17) connecting said faces (24A, 24B). The first face (24A) comprises at least a first region (35A) that does not adhere, or only slightly adheres to said seal (17), opposite a first region (33B) that strongly adheres to said seal (17) of the second face (24B). The first region (35A) that does not adhere or only slightly adheres is delimited by at least a portion of the edge (37) common to the first face (24A) and a discharge face (23). The first region (35A) that does not adhere or only slightly adheres comprises a side (41A) that diverges towards the discharge face (23) and which extends up to said common edge (37).Application to particle filters for engine exhaust gases.
摘要:
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.
摘要:
This structure (11) comprises first and second filtering elements (15A, 15B) extending essentially parallel to a longitudinal axis (X-X′) of the structure (11) between an admission region (21) of the gases into the structure (11) and an evacuation region (23) of the gases from the structure, and comprises a seal (17) for joining these elements (15A, 15B). The seal (17) comprises at least one downstream pat (43) which has a thermal mass per unit length greater than the thermal mass per unit length of an upstream part (41) of the seal (17). The invention is for use in particulate filters for the exhaust gases of a motor vehicle diesel engine.
摘要:
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 (14e,14s), each of the channels (14e,14s) being bounded by a side wall (22), a plug (15e,15s) and an opening (19e,19s) terminating outwardly. The block according to the invention is remarkable in that a first portion (34) of the side wall (22) of at least one of the channels (14p,14p″), called the “reinforced channel”, includes a reinforcement compared to the rest of the side wall (22) forming a second portion (36) of the side wall (22), the ratio (R) of the thickness of the first portion (34) to the thickness of the second portion (36), in any transverse plane of section (P), being between 1.1 and 3.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
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 (14e,14s), each of the channels (14e,14s) being bounded by a side wall (22), a plug (15e,15s) and an opening (19e,19s) terminating outwardly. The block according to the invention is remarkable in that a first portion (34) of the side wall (22) of at least one of the channels (14p,14p″), called the “reinforced channel”, includes a reinforcement compared to the rest of the side wall (22) forming a second portion (36) of the side wall (22), the ratio (R) of the thickness of the first portion (34) to the thickness of the second portion (36), in any transverse plane of section (P), being between 1.1 and 3.
摘要:
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, between 30 and 90% of silicon carbide (SiC), at least 3% of hollow spheres including, in percentages by weight and for a total of at least 99%, between 20 and 99% of silica (SiO2) and between 1 and 80% of alumina (Al2O3), at least 80% by number of the hollow spheres having a size of between 5 and 150 μm.
摘要翻译:用于特别用于将多个过滤体过滤块固定在一起的用于过滤汽车内燃机的废气颗粒的接合水泥,所述水泥包括相对于矿物材料重量的重量百分数 来自可能的水和可能的矿物树脂,30-90%的碳化硅(SiC),至少3%的中空球包括按重量百分比计,总共至少99%的中空球的20%和99%之间的 二氧化硅(SiO 2)和1至80%的氧化铝(Al 2 O 3),至少80%的中空球的尺寸为5至150μm。