Hiroshi Maeno

Characteristics of reaction-bonded porous silicon nitride honeycomb for DPF substrate

Silicon nitride (Si3N4) is a good candidate for a DPF substrate due to its excellent mechanical and thermal properties. A new process for producing porous silicon nitride is established and fundamental characteristics of fabricated silicon nitride honeycomb is evaluated, including mechanical properties and chemical stability against CeO2 ash as well as pressure drop and soot regeneration behavior.

Characteristics and Evaluation of Porous Silicon Nitride DPF

Silicon nitride (Si 3 N 4 ) is a good candidate for a DPF substrate due to its excellent mechanical and thermal properties. The novel process for producing porous silicon nitride is established and fundamental characteristics of fabricated Si 3 N 4 honeycomb were evaluated including mechanical/thermal properties and chemical stability against sulfuric acid and several kinds of chemicals. DPF characteristics in application such as pressure drop and soot regeneration behavior were investigated in diesel engine test bench. Numerical studies to evaluate stress in DPF during soot regeneration were also conducted.