Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
There is disclosed a fine particle collecting filter which enables effectively preventing damage due to a heat stress generated during recovery, without incurring increase of a pressure loss or deterioration of a PM collecting efficiency. A fine particle collecting filter 1 includes a honeycomb structure 2 in which a plurality of honeycomb segments 3 are integrally joined by a joining material 12, and has a constitution where an exhaust gas allowed to flow from an inlet end surface into cells 7 passes partition walls 8, and then flows out from an outlet end surface to the outsides of the cells 7. The partition walls 8 are made of a material containing SiC as a main component, at least one of an average open diameter of pores which are open in a surface of each of the partition walls 8 that becomes an inlet side of the exhaust gas passing the partition wall 8 and an average open diameter of the pores which are open in a surface of the partition wall 8 that becomes an outlet side of the exhaust gas passing the partition wall 8 is from 0.1 to 5 µm, an average pore diameter of the whole partition wall 8 is from 10 to 30 µm, and a thermal conductivity of the partition walls 8 at room temperature is from 80 to 110 W/mK.
There is disclosed a fine particle collecting filter which enables effectively preventing damage due to a heat stress generated during recovery, without incurring increase of a pressure loss or deterioration of a PM collecting efficiency. A fine particle collecting filter 1 includes a honeycomb structure 2 in which a plurality of honeycomb segments 3 are integrally joined by a joining material 12, and has a constitution where an exhaust gas allowed to flow from an inlet end surface into cells 7 passes partition walls 8, and then flows out from an outlet end surface to the outsides of the cells 7. The partition walls 8 are made of a material containing SiC as a main component, at least one of an average open diameter of pores which are open in a surface of each of the partition walls 8 that becomes an inlet side of the exhaust gas passing the partition wall 8 and an average open diameter of the pores which are open in a surface of the partition wall 8 that becomes an outlet side of the exhaust gas passing the partition wall 8 is from 0.1 to 5 µm, an average pore diameter of the whole partition wall 8 is from 10 to 30 µm, and a thermal conductivity of the partition walls 8 at room temperature is from 80 to 110 W/mK.
FINE PARTICLE COLLECTING FILTER
FEINPARTIKELSAMMELFILTER
FILTRE DE COLLECTE DE PARTICULES FINES
MIYAIRI YUKIO (Autor:in)
03.04.2019
Patent
Elektronische Ressource
Englisch