Mat for mounting a pollution control monolith in a pollution control device for the treatment of exhaust gas of a diesel engine powered machine

摘要

The present invention provides a pollution control device suitable for use with a diesel engine, comprising a diesel pollution control monolith arranged in a metallic casing with non-woven mat disposed between the metallic casing and the diesel pollution control monolith, said non-woven mat being a non-intumescent mat comprising at least 90% by weight based on the total weight of the mat of chopped magnesium aluminium silicate glass fibers that have a number average diameter of 5 mu m or more and a length of 0.5 to 15cm, said glass fibers being needle punched or stitch bonded and said mat being free or substantially free of organic binder.