A New High Temperature Ceramic Material For Diesel Particulate Filter Applications

Cordierite-based diesel particulate filters (DPFs) have been in use for heavy duty engine applications for nearly two decades. Recently, passenger car applications for DPFs have begun to appear in Europe due to tightening legislation. while cordierite-based DPFs work well in most applications, it appears that in the passenger car exhaust environment under some controlled regeneration conditions, cracking and melting of the existing cordierite-based DPF products have been reported. This paper focuses on the development of new, high temperature oxide ceramics for DPF passenger car applications.