LOW SHEAR MOUNTING MAT FOR POLLUTION CONTROL DEVICES

• Main Authors: BEAUHARNOIS, MARK, KUMAR, AMIT, STAHLMAN, MARK D
• Format: Patent
• Language: English; French
• Published: 31.03.2011
• Subjects: ARTIFICIAL STONE; BLASTING; BRAIDING; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; COTTON-WOOL; ENGINE PLANTS IN GENERAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; KNITTING; LACE-MAKING; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; LIGHTING; LIME, MAGNESIA; MACHINES OR ENGINES IN GENERAL; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MECHANICAL ENGINEERING; METALLURGY; NON-WOVEN FABRICS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SEPARATION; SLAG; STEAM ENGINES; TEXTILES; TRANSPORTING; TREATMENT OF NATURAL STONE; TRIMMINGS; WADDING; WEAPONS

A mounting mat (20) for an exhaust gas treatment device (10) including high temperature resistant ceramic fibers containing alumina and/or high temperature resistant biosoluble inorganic fibers, organic binder which at least partially liquefies at elevated temperature prior to binder burnout, colloidal inorganic oxide and optionally intumescent material. The exhaust gas treatment device (10) includes a housing (12), a fragile catalyst support structure (18) resiliently mounted within the housing (12), and the mounting mat (20) disposed in a gap between the housing (12) and the fragile catalyst support structure (18). L'invention porte sur un mat de montage (20) pour un dispositif (10) de traitement des gaz d'échappement, comprenant des fibres céramiques résistantes aux températures élevées contenant de l'alumine et/ou des fibres inorganiques biosolubles résistantes aux températures élevées, un liant organique qui se liquéfie au moins partiellement aux températures élevées avant combustion du liant, un oxyde inorganique colloïdal et facultativement une matière intumescente. Le dispositif (10) de traitement des gaz d'échappement comprend un boîtier (12), une structure (18) de support de catalyseur fragile, montée de façon élastique à l'intérieur du boîtier (12), et le mat de montage (20) disposé dans un intervalle entre le boîtier (12) et la structure (18) de support de catalyseur fragile.