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    • 1. 发明专利
    • Honeycomb structure
    • 蜂窝结构
    • JP2013154278A
    • 2013-08-15
    • JP2012015739
    • 2012-01-27
    • Denso Corp株式会社デンソーToyota Motor Corpトヨタ自動車株式会社
    • HAYASHI MASAHIROMURATA MASAKAZUKUNO HISASHIMATSUBARA HIROYUKISUZUKI HIROMASA
    • B01J35/04B01D53/86
    • B01J29/70B01D46/2425B01D46/2455B01D46/247B01D2046/2481C04B35/195C04B38/0009C04B2111/00405C04B2235/3206C04B2235/775C04B38/007
    • PROBLEM TO BE SOLVED: To provide a honeycomb structure in which a flow velocity distribution of exhaust gas is uniformized much more, the exhaust gas cleaning performance of which can be improved and the pressure loss of which can be reduced.SOLUTION: A honeycomb structure 1 has partition walls 11 and a plurality of cells 12, is made of cordierite ceramic and is configured in such a way that cell density is changed continuously or stepwise in a radial direction as it goes from a central part to an outer peripheral part thereof. When a radius of the honeycomb structure 1 is defined as R, an area having ≤1/3R distance from a center 10 is defined as a first area 21, an area 22 having >1/3R and ≤2/3R distance from the center 10 is defined as a second area 22 and an area having >1/3R and ≤2/3R distance from the center 10 is defined as a third area 23, and when average cell densities in the first area 21, the second area 22 and the third area 23 are defined as M1, M2 and M3, respectively, the honeycomb structure 1 satisfies a relationship, M1>M2>M3. When the change rates of the average cell densities in the first area 21 and the second area 22 are defined as K1 and K2, respectively, the honeycomb structure 1 satisfies a relationship, K1
    • 要解决的问题:为了提供一种蜂窝结构,其中排气的流速分布更均匀,可以提高其排气净化性能并降低其压力损失。解决方案:蜂窝结构体1 具有分隔壁11和多个单元12由堇青石陶瓷制成,并且以这样的方式配置,使得当细胞密度从中心部分到其外周部分从径向方向连续地或逐步地改变时, 当蜂窝结构体1的半径被定义为R时,将距离中心10的距离≤1/ 3R的区域定义为第一区域21,具有> 1 / 3R且≤2/ 3R距离中心的区域22 10被定义为第二区域22,并且具有距离中心10的距离> 1 / 3R和≤2/ 3R的区域被定义为第三区域23,并且当第一区域21,第二区域22和 第三区域23分别被定义为M1,M2和M3,蜂窝结构体1满足M1> M2> M3的关系。 当第一区域21和第二区域22中的平均泡孔密度的变化率分别被定义为K1和K2时,蜂窝结构体1满足K1
    • 2. 发明专利
    • Honeycomb structure
    • 蜂窝结构
    • JP2013173133A
    • 2013-09-05
    • JP2012244484
    • 2012-11-06
    • Denso Corp株式会社デンソーToyota Motor Corpトヨタ自動車株式会社
    • HAYASHI MASAHIROMURATA MASAKAZUMATSUBARA HIROYUKIKUNO HISASHISUZUKI HIROMASA
    • B01J35/04B01D53/86F01N3/28
    • C04B38/0009B01D46/247B01D2046/2496B01J35/04F01N3/2828F01N2330/06F01N2330/34F01N2330/48F01N2330/60Y10T428/24149
    • PROBLEM TO BE SOLVED: To provide a honeycomb structure the pressure loss of which can be reduced and whose performance of cleaning exhaust gas can be improved.SOLUTION: A honeycomb structure 1 has partition walls 11 and a plurality of cells 12. In a cross section perpendicular to the axial direction thereof, the honeycomb structure 1 has a plurality of cell density regions 2 different in cell density in the radial direction thereof toward the outer peripheral part from the central part thereof. A border region 14 is disposed between the adjacent cell density regions 2 in order to separate them from each other. The border region 14 has: a border partition wall 141 formed by connecting the partition walls 11 of the cell density regions 2 present on both sides to one another; and a plurality of polygonal border cells 142 at least a part of each of which is surrounded by the border partition wall 141 and each of which has the shape different from that of the cells 12 of the cell density regions 2 present on both sides. When the mean hydraulic diameter of the border cell 142 in the border region 14 is defined as Φ1 and that of the cell 12 in the cell density region 2 present just on the inside of the border region 14 is defined as Φ2, Φ1/Φ2≥1.25 is satisfied.
    • 要解决的问题:提供可以降低压力损失并且可以提高清洁废气性能的蜂窝结构体。解决方案:蜂窝结构体1具有分隔壁11和多个单元12.在截面中 蜂窝结构体1具有与其轴向垂直的多个细胞密度区域2,其细胞密度在其半径方向上从其中心向外周部分的细胞密度不同。 边界区域14设置在相邻的单元密度区域2之间,以使它们彼此分离。 边界区域14具有:通过将存在于两侧的单元密度区域2的分隔壁11彼此连接而形成的边界分隔壁141; 以及多个边界单元142,多个边界单元142的至少一部分被边界分隔壁141包围,并且每个具有不同于存在于两侧的单元密度区域2的单元12的形状。 边界区域14中的边界单元142的平均水力直径定义为Φ1,刚好在边界区域14的内部的单元密度区域2中的单元12的平均液压直径定义为Φ2,Φ1/Φ2≥ 1.25满足。
    • 4. 发明专利
    • Honeycomb structural body
    • 蜂窝结构
    • JP2013173134A
    • 2013-09-05
    • JP2012248302
    • 2012-11-12
    • Denso Corp株式会社デンソーToyota Motor Corpトヨタ自動車株式会社
    • HAYASHI MASAHIROMURATA MASAKAZUMATSUBARA HIROYUKIKUNO HISASHISUZUKI HIROMASA
    • B01J35/04F01N3/28
    • B01J29/70B01D53/94B01J32/00B01J35/04F01N3/28F01N3/2828F01N2330/34F01N2330/48
    • PROBLEM TO BE SOLVED: To provide a honeycomb structure whose thermal shock resistance can be improved while sufficiently securing exhaust gas cleaning performance.SOLUTION: A honeycomb structure 1 has a plurality of cell density regions 2 configured so that the cell density is changed step by step in the radial direction thereof. A border wall 14 is disposed between the adjacent cell density regions 2. The plurality of cell density regions 2 include the high cell density region 2a having the highest cell density among the cell density regions except for the outermost cell density region 2 and the low cell density region 2b having the lowest cell density among the cell density regions except for the innermost cell density region 2. When the solid volume of the honeycomb structure is defined as V on the assumption that the entire honeycomb structure 1 is constituted of the high cell density region 2a, the solid volume of the high cell density region 2a of the honeycomb structure 1 is defined as Va; the solid volume of the low cell density region 2b is defined as Vb; and the solid volume of the border wall 14 that separates the low cell density region 2b from the cell density region present just on the inside thereof is defined as Vs, the relationship of V-Va≥Vb+Vs is satisfied.
    • 要解决的问题:提供一种在充分确保排气净化性能的同时可以提高耐热冲击性的蜂窝结构体。解决方案:蜂窝结构体1具有多个细胞密度区域2,其被配置为使细胞密度逐步改变 在其径向方向。 边界壁14设置在相邻的细胞密度区域2之间。多个细胞密度区域2包括除了最外细胞密度区域2和细胞密度区域2之外的细胞密度区域中具有最高细胞密度的高细胞密度区域2a 在最细胞密度区域2之外的细胞密度区域中具有最低细胞密度的密度区域2b。当蜂窝结构体的整体体积由蜂窝结构体1的高细胞密度 区域2a中,蜂窝结构体1的高细胞密度区域2a的固体体积定义为Va; 低电池密度区域2b的固体体积被定义为Vb; 并且将低细胞密度区域2b与刚刚在其内部存在的细胞密度区域分开的边界壁14的固体体积被定义为Vs,满足V-Va≥Vb+ Vs的关系。
    • 6. 发明专利
    • Honeycomb structure
    • 蜂窝结构
    • JP2014184371A
    • 2014-10-02
    • JP2013059651
    • 2013-03-22
    • Denso Corp株式会社デンソー
    • MURATA MASAKAZU
    • B01D53/86B01J35/04F01N3/28
    • B32B3/12B01D46/247B01D2046/2496F01N3/2828F01N2330/06F01N2330/30F01N2330/60Y10T428/24157
    • PROBLEM TO BE SOLVED: To provide a honeycomb structure capable of improving strength while suppressing occurrence of shape failures and defects.SOLUTION: A honeycomb structure 1 includes: a central portion 11; and an outer circumferential portion 12 lower in cell density than the central portion 11. A boundary partition wall 13 is provided between the central portion 11 and the outer circumferential portion 12 for separating the central portion 11 from the outer circumferential portion 12. Cells 3 of the central portion 11 and the outer circumferential portion 12 include imperfect cells 32 in contact with the boundary partition wall 13. Of the imperfect cell 32 of the central portion 11 and the imperfect cell 32 of the outer circumferential portion 12 opposite to each other across the boundary partition wall 13, a specific imperfect cell 321 that is lower in an area of a cell opening and the area of the cell opening of which is equal to or smaller than a predetermined area S is closed by a material constituting a cell wall 2. If it is defined that a cell pitch of the cells 3 of the central portion 11 or the outer circumferential portion 12 including the imperfect cell 32 is P and that a thickness of the cell wall 2 is T, the predetermined area S is represented by an equation of S=(P-T)/8.
    • 要解决的问题:提供能够提高强度同时抑制形状破坏和缺陷的发生的蜂窝结构体。解决方案:蜂窝结构体1包括:中心部分11; 以及比中央部11细胞密度低的外周部12.在中心部11和外周部12之间设置有分隔壁13,用于将中心部11与外周部12分离。细胞3 中心部分11和外周部分12包括与边界分隔壁13接触的不完美的电池32.在中心部分11的不完全电池32和外周部分12的不完全电池32相对于 边界分隔壁13,在单元开口的区域中较小的单元321和单元开口的面积等于或小于预定面积S的特定不完全单元321由构成单元壁2的材料封闭。 如果定义中心部分11的单元3的单元间距或包括不完全单元32的外圆周部分12的单元间距为P,并且 细胞壁2的克数为T,预定面积S由S =(P-T)/ 8的等式表示。
    • 8. 发明专利
    • HONEYCOMB STRUCTURAL BODY EXTRUDING DEVICE
    • JPH0976219A
    • 1997-03-25
    • JP24012295
    • 1995-09-19
    • DENSO CORP
    • KODAMA KUNIHIROFURUHASHI HIROSHITANIDA SHOZOMURATA MASAKAZU
    • B28B3/26B28B3/20B29C48/32
    • PROBLEM TO BE SOLVED: To provide a honeycomb structural body extruding device, facilitating the change of program accompanying the change of configuration of a molded form. SOLUTION: The principal parts of a honeycomb structural body extruding device is constituted of a dice 10 and an extruding mask 20. The extruding mask 20 is formed so as to have an annular shape having an inner diameter D1 and is positioned in the annular notch of the dice 10 formed of the taper surface 19 and a coating material outlet port side end surface 18b of the dice 10. An upper end surface 21, positioned above the extruding mask 20, is formed so as to be abutable against the coating material outlet port side end surface 18b of the dice 10 while the opening areas of material supplying ports 11a, 11b, 11c are controlled by the configuration of the upper end surface 21. In this case, the extruding mask 20 is replaced by another extruding mask 30, shown by two-dotted chain lines, whereby the upper end surface 21 is changed to another upper end surface 31 having a different configuration and, therefore, the opening areas of the material supplying ports 11a, 11b, 11c can be controlled arbitrarily.