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    • 1. 发明专利
    • 触媒コンバーター
    • 催化转换器
    • JP2014213289A
    • 2014-11-17
    • JP2013094303
    • 2013-04-26
    • トヨタ自動車株式会社Toyota Motor Corp株式会社デンソーDenso Corp
    • KAYANUMA RYOSUKEFUJIWARA TAKAHIKOAOKI HISAOMATSUBARA HIROYUKIHAYASHI MASAHIROYABUSAKI YUJI
    • B01J35/04B01D53/86F01N3/28
    • F01N3/20F01N3/24F01N3/28F01N3/2803F01N2260/06F01N2260/14F01N2330/48F01N2330/60F01N2340/00
    • 【課題】触媒コンバーターを構成する基材と触媒コンバーターの下流側の排気管との関係を規定することにより、排ガス浄化性能に優れた触媒コンバーターを提供する。【解決手段】断面が一様な筒部1aと、筒部1aの両端から断面が縮径するように伸びて排ガス流れの上流側の排気管3と下流側の排気管4にそれぞれ繋がる上流側コーン部1bおよび下流側コーン部1cと、から構成された外管1と、外管1の筒部1aの内部に配設されたセル構造の基材2であって、基材2のセル壁面において貴金属触媒が担体に担持されてなる触媒層が形成されている基材2と、からなる触媒コンバーター10において、基材2は長手方向に直交する断面においてセル密度が相対的に高い中央領域2aとセル密度が相対的に低い周辺領域2bとから構成され、下流側コーン部1cと排気管4の接続部5を基材2に投影させた際の投影部分が中央領域2a内に存在している。【選択図】図3
    • 要解决的问题:提供一种催化转化器,其通过规定构成催化转化器的基材与催化转化器的下游侧的排气管之间的关系而具有优异的废气清洗性能。解决方案:催化转化器10包括 :外管1; 和基材2.外管1由具有恒定横截面的管部1a和上游侧锥部1b和下游侧锥部1c构成,该下游侧锥部1c从管部1a的两端延伸直径 在排气流的上游侧分别与排气管3连接,在下游侧与排气管4连接。 基材2是配置在外管1的管部1a的内部的电池结构体,在基材2的电池壁面形成有由载体承载贵金属催化剂的催化剂层。基材2 由与长度方向正交的截面相对较高的细胞密度的中央区域2a和细胞密度相对较低的周边区域2b构成。 当下游锥形部分1c和排气管4之间的连接部分5向基材2突出时,在中心区域2a中存在突出部分。
    • 3. 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。
    • 4. 发明专利
    • Exhaust emission control device of internal combustion engine
    • 内燃机排气控制装置
    • JP2010101303A
    • 2010-05-06
    • JP2009033200
    • 2009-02-16
    • Toyota Motor Corpトヨタ自動車株式会社
    • IMOTO RUIHAYASHI KOTAROWATABE GAOMATSUBARA HIROYUKIKINOSHITA YOHEI
    • F01N3/02B01D46/42B01D53/94F01N3/08F01N3/24
    • PROBLEM TO BE SOLVED: To provide an exhaust emission control device of an internal combustion engine regenerating a PM filter while reducing CO emission, even if an oxidation catalyst is inactive.
      SOLUTION: An oxidation catalyst 14, a DPF 16, and an ozone generator 18 are disposed in an exhaust passage 12 from upstream to downstream in this order. A bypass passage 22 is connected to an upstream side of the oxidation catalyst 14. A CO adsorbent 24 is disposed in the bypass passage 22. In controlling regeneration of the DPF 16, ozone is supplied to the DPF 16 in a state where an exhaust shutoff valve 28 is closed and a backward flow open valve 30 is opened. Thus, when PM in the DPF 16 is oxidized by the ozone, gas generated by the reaction if fed backward in the exhaust passage 12, thus allowing CO in the gas to be adsorbed by the adsorbent 24. Meanwhile, in controlling desorption of the adsorbent 24, exhaust gas is introduced in the bypass passage 22, and CO desorbed from the adsorbent 24 is purified by the oxidation catalyst 14.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:即使氧化催化剂不活动,也可以提供在减少CO排放的同时再生PM过滤器的内燃机的废气排放控制装置。 解决方案:氧化催化剂14,DPF16和臭氧发生器18按顺序从上游到下游设置在排气通道12中。 旁通通道22连接到氧化催化剂14的上游侧。CO吸附剂24设置在旁路通道22中。在控制DPF 16的再生时,在排气关闭状态下向DPF 16供给臭氧 阀28关闭并且打开后向开流阀30。 因此,当DPF 16中的PM被臭氧氧化时,由反应产生的气体如果在排气通道12中被反馈,从而使气体中的CO被吸附剂24吸附。同时,在控制吸附剂的解吸附 如图24所示,废气被引入到旁通通道22中,并且从吸附剂24脱附的CO被氧化催化剂14净化。版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Exhaust emission control device of internal combustion engine
    • 内燃机排气控制装置
    • JP2007100578A
    • 2007-04-19
    • JP2005291091
    • 2005-10-04
    • Toyota Motor Corpトヨタ自動車株式会社
    • IBE MASAYASOFUE YUICHIMATSUBARA HIROYUKIKAKIHANA MASARUHIRATA HIROTOISHIBASHI KAZUNOBU
    • F01N3/20B01D53/94B01J19/08F01N3/08F01N3/18F01N3/36
    • PROBLEM TO BE SOLVED: To improve fuel economy and maintaining catalyst purification capacity by efficiently reducing a sulfur poisoning recovery treatment time or lowering a sulfur poisoning recovery treatable temperature in an exhaust emission control device having an exhaust purifying catalyst requiring the sulfur poisoning recovery treatment such as a NOx storage/reduction type catalyst. SOLUTION: This exhaust emission control device of the internal combustion engine in which the exhaust purifying catalyst is disposed in an exhaust passage comprises a plasma injector having a plasma reforming part. The sulfur poisoning recovery treatment for the exhaust purifying catalyst is performed by adding active species formed by plasma-reforming at least either of a fuel and an air by a plasma injector beforehand to exhaust gases on the upstream side of the exhaust purifying catalyst. COPYRIGHT: (C)2007,JPO&INPIT
    • 要解决的问题:通过有效地减少硫中毒恢复处理时间或降低具有需要硫中毒回收的排气净化催化剂的废气排放控制装置中的硫中毒恢复可处理温度来提高燃料经济性和维持催化剂净化能力 诸如NOx储存/还原型催化剂的处理。 解决方案:其中排气净化催化剂设置在排气通道中的内燃机的废气排放控制装置包括具有等离子体重整部分的等离子体注入器。 排气净化催化剂的硫中毒恢复处理通过将预先通过等离子体喷射器的燃料和空气中的至少一种进行等离子体重整形成的活性物质加入到排气净化催化剂的上游侧的排气来进行。 版权所有(C)2007,JPO&INPIT
    • 10. 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