Exhaust gas treatment device and method for making the same

Details Exhaust gas treatment device and method for making the same Exhaust gas treatment device and method for making the same

B - Operations, Transporting

01

D

B01D 53/94 (2006.01) B01D 46/24 (2006.01) C03C 13/00 (2006.01) C03C 25/66 (2006.01) F01N 3/021 (2006.01) F01N 3/28 (2006.01)

Patent

CA 2500380

A device (10) for treatment of exhaust gases includes a housing (12); a fragile structure (18) resiliently mounted within the housing (12); and a non- intumescent mounting mat (20) disposed in a gap between the housing (12) and the fragile structure (18). The mounting mat (20) comprises melt-formed, leached glass fibers high in silica content and exerts a minimum holding pressure for holding the fragile structure (18) within the housing (12) of one of: (i) at least 10 kPa after 1000 cycles of testing at a hot face temperature of 900 ~C, a gap bulk density of between 0.3 and 0.5 g/cm3 and a percent gap expansion of 5 percent; and (ii) at least 50 kPa after 1000 cycles of testing at a hot face temperature of 300 ~C, a gap bulk density of between 0.3 and 0.5 g/cm3, and a percent gap expansion of 2 percent.

L'invention concerne un dispositif (10) conçu pour traiter les gaz d'échappement, qui comporte un logement (12) ; une structure fragile (18) montée de manière élastique à l'intérieur du logement (12) ; et un mat de montage non intumescent (20) placé dans un espace entre le logement (12) et la structure fragile (18). Le mat de montage (20) comporte des fibres de verre lixiviées, formées par fusion à teneur élevée en silicium et exerce une pression de maintien minimale permettant de maintenir la structure fragile (18) à l'intérieur du logement (12), (i) d'au moins 10kPa après 1000 cycles d'essai à une température de face chaude de 900 ·C, une densité apparente d'écart entre 0,3 et 0,5 g/cm?3¿, et une expansion d'écart en pourcent de 5 pourcent, et (ii) d'au moins 50 kPa après 1000 cycles d'essai à une température de face de 300 ·C, une densité apparente d'écart située entre 0,3 et 0,5 g/cm?3¿, et une expansion d'écart en pourcent de 2 pourcent.

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