High temperature mat for a pollution control device

摘要

A high temperature mat (16) for a pollution control device (10). The high temperature mat is generally utilized in pollution control devices (10) such as catalytic converters (14) and diesel particulate filters. The mat (16) includes a mixture of polycrystalline fibers and annealed ceramic fibers. The polycrystalline fibers are generally sol-gel formed fibers that do not contain any ceramic particulate matter. The other ceramic fiber component of the present invention is an annealed ceramic fiber. The combination of the noted fibers results in a high temperature mat (16) having desirable resiliency value and good erosion resistance at high temperatures and normal mounting pressures. The high temperature mat is suitable for use as an insulating layer in an end cone of a pollution control device (10) or for wrapping a pollution control element (14) and securing the wrapped element within the pollution control device (10).