초록 ▼

A diesel particulate filter apparatus comprises filter structures bent in a wavy profile, formed in a tubular form, and comprising ceramic fiber laminate materials formed by randomly laminating a ceramic fiber and wire nets laminated on the ceramic fiber laminate materials. First rigid members and s

A diesel particulate filter apparatus comprises filter structures bent in a wavy profile, formed in a tubular form, and comprising ceramic fiber laminate materials formed by randomly laminating a ceramic fiber and wire nets laminated on the ceramic fiber laminate materials. First rigid members and second rigid members are fitted in and on both end portions of the filter structures. Tubular clamping members for clamping the filter structures in the thickness-wise direction thereof are provided on the outer sides of the second rigid members. Woven fabrics may be interposed between nonwoven fabrics of the ceramic fiber and the wire nets constituting the filter structures. Filter members comprise ceramic fiber laminate materials formed by laminating a ceramic fiber, and glass layers covering the outer peripheral surfaces of the ceramic fiber laminate materials and having a low Young\s modulus and a coefficient of linear thermal expansion substantially the same as that of the ceramic fiber, whereby breakage of the fiber laminate materials can be prevented while enabling forming thereof.

대표청구항 ▼

A diesel particulate filter apparatus comprising filter structures comprising ceramic fiber laminate materials formed by randomly laminating a ceramic fiber, and nets laminated on said ceramic fiber laminate materials for collecting particulates contained in exhaust gas from an engine with said filt

A diesel particulate filter apparatus comprising filter structures comprising ceramic fiber laminate materials formed by randomly laminating a ceramic fiber, and nets laminated on said ceramic fiber laminate materials for collecting particulates contained in exhaust gas from an engine with said filter structures; wherein said filter structures are each bent in a wavy profile and formed in a tubular form, and wherein both end portions of said filter structures further comprise first rigid members having a form fitting in said wavy profile on the inner sides of said filter structures, second rigid members having a form fitting on said wavy profile on the outer sides of said filter structures, and tubular clamping members for clamping said filter structures in the thickness-wise direction thereof on the outer sides of said second rigid members.