METHOD FOR MANUFACTURING A PARTICULATE FILTER FOR DIESEL ENGINES, USING A HIGH-PERFORMANT CERAMIC FOAM

A filtering body is obtained for particulate of diesel engines, consisting of a ceramic foam that is produced, starting from a ceramic-material powder-based suspension (slurry), by preparing a perform of polymeric foam material and impregnating the said perform with the ceramic-powder slurry so as t...

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Bibliographische Detailangaben
Hauptverfasser:	DEBENEDETTI, MASSIMO, BORETTO, GIANMARIA, MARZORATI, DIEGO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION STEAM ENGINES TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	A filtering body is obtained for particulate of diesel engines, consisting of a ceramic foam that is produced, starting from a ceramic-material powder-based suspension (slurry), by preparing a perform of polymeric foam material and impregnating the said perform with the ceramic-powder slurry so as to distribute the slurry evenly on the perform, and by then subjecting the body thus obtained to a thermal cycle of sintering in such a way as to pyrolyze the polymeric material and obtain a high-porosity ceramic material. The ceramic-material powder is chosen from among mullite powder, alumina powder, zirconia powder, and mixtures thereof, having very high purity, controlled grain-size, and a high specific surface.