发明授权
- 专利标题: Honeycomb filter
- 专利标题(中): 蜂窝过滤器
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申请号: US12603338申请日: 2009-10-21
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公开(公告)号: US08444739B2公开(公告)日: 2013-05-21
- 发明人: Yukio Mizuno , Naomi Noda , Toshio Yamada , Yukio Miyairi , Yukari Nakane , Yasushi Noguchi
- 申请人: Yukio Mizuno , Naomi Noda , Toshio Yamada , Yukio Miyairi , Yukari Nakane , Yasushi Noguchi
- 申请人地址: JP Nagoya
- 专利权人: NGK Insulators, Ltd.
- 当前专利权人: NGK Insulators, Ltd.
- 当前专利权人地址: JP Nagoya
- 代理机构: Oliff & Berridge, PLC
- 优先权: JP2007-119198 20070427; JP2008-041126 20080222
- 主分类号: B01D50/00
- IPC分类号: B01D50/00 ; B01D39/00 ; B01D39/06 ; B01D24/00 ; B01D39/14 ; F01N3/00
摘要:
A honeycomb filter including partition walls having a porous partition wall base material and a surface layer provided on only inflow side or both inflow and outflow sides of the partition wall base material, and satisfying the following conditions capable of using as a DPF. The surface layer has a peak pore diameter of from 0.3 μm to 20 μm (exclusive) being equal to or smaller than the average pore diameter of the base material; the porosity of from 60% to 95% (exclusive) when measured by mercury porosimetry being larger than that of the base material; and the thickness L1 of from 0.5% to 30% (exclusive) of the partition wall thickness L2; and mass per filtration area of from 0.01 mg/cm2 to 6 mg/cm2 (exclusive). The base material has an average pore diameter of from 10 μm to 60 μm (exclusive) and a porosity of from 40% to 65% (exclusive).
公开/授权文献
- US20100135866A1 HONEYCOMB FILTER 公开/授权日:2010-06-03
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