EXHAUST GAS PURIFICATION FILTER

An exhaust gas purification filter (1) is disposed in an exhaust passage of a gasoline engine. The exhaust gas purification filter (1) has a partition wall (11) having many pores (110), a plurality of cells (12) separated by the partition wall (11), and sealing parts (13) that alternately seal the c...

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Bibliographische Detailangaben
Hauptverfasser:	ISHIHARA Mikio, MIZUTANI Keisuke
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:	An exhaust gas purification filter (1) is disposed in an exhaust passage of a gasoline engine. The exhaust gas purification filter (1) has a partition wall (11) having many pores (110), a plurality of cells (12) separated by the partition wall (11), and sealing parts (13) that alternately seal the cells (12) at either end of the filter. In the exhaust gas purification filter (1), assuming average pore size of the partition wall (11) is A µm and average surface opening size of a surface of the partition wall (11) is B µm, A ≥ B is satisfied, a ratio calculated by a formula 100 × (A - B) / B is 30% or less, and a tortuosity coefficient of the pore (110) within the partition wall (11) is 6.0 × 103 or more and 12.5 × 103 or less.