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公开(公告)号：US06825145B2
公开(公告)日：2004-11-30
申请号：US10452206
申请日：2003-06-02
申请人： Hiroshi Tanada , Osamu Nakayama , Keisuke Tashiro , Kinichi Iwachido , Tetsuya Watanabe , Kazuo Koga
发明人： Hiroshi Tanada , Osamu Nakayama , Keisuke Tashiro , Kinichi Iwachido , Tetsuya Watanabe , Kazuo Koga
IPC分类号： B01J2906
CPC分类号： B01D53/9422 , B01D53/945 , B01D53/9468 , B01D2255/102 , B01D2255/202 , B01D2255/204 , B01D2255/30 , B01D2255/50 , B01D2255/91 , B01J23/58 , B01J29/082 , B01J29/084 , B01J29/18 , B01J29/40 , B01J29/70 , B01J37/0244 , B01J37/0246 , Y02T10/22
摘要： The present invention provides an exhaust gas purifying catalyst that is capable of substantially reducing the degree of deterioration in an exhaust gas purifying capability, which results from dissipation of an absorbent agent. Accordingly, an exhaust gas purifying catalyst, which includes a carrier and a catalyst layer, and to which at least one material selected from a group of alkali metals and alkali earth metals is added as an absorbent agent, is characterized in that acid material with a high affinity with respect to the absorbent agent is mixed in the catalyst layer so as to fix the absorbent agent, and an inhibiting layer is formed between the catalyst layer and the carrier so as to inhibit the movement of the absorbent agent toward the carrier.
摘要翻译： 本发明提供一种排气净化催化剂，其能够显着降低由吸收剂的耗散引起的废气净化能力的劣化程度。 因此，作为吸收剂，添加有载体和催化剂层，并且添加有选自碱金属和碱土类金属中的至少一种的废气净化用催化剂，其特征在于，具有 在催化剂层中混合相对于吸收剂的高亲合力，以固定吸收剂，并且在催化剂层和载体之间形成抑制层，以抑制吸收剂向载体的移动。
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公开(公告)号：US06797663B2
公开(公告)日：2004-09-28
申请号：US10258487
申请日：2002-10-25
IPC分类号： B01J2906
CPC分类号： B01D53/9422 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2022 , B01D2255/2042 , B01D2255/9022 , B01J23/58 , B01J23/64 , B01J37/0244 , B01J37/0246
摘要： An exhaust gas clean-up catalyst having a catalytic layer which contains, as an occluding agent, at least one (potassium and/or the like) chosen from a group consisting of alkaline metals and alkaline earth metals. The catalytic layer consists of a first catalytic layer (20) which contains the occluding agent (potassium and/or the like) and an acid material (30) having a high affinity to the occluding agent, and a second catalytic layer (40) which contains the occluding agent and does not contain the acid material.
摘要翻译： 一种具有催化层的废气净化催化剂，该催化剂层含有选自碱金属和碱土金属的至少一种（钾和/或类似物）作为阻塞剂。 催化层由含有阻塞剂（钾和/或类似物）的第一催化剂层（20）和对吸留剂具有高亲和力的酸性物质（30）和第二催化剂层（40）组成，第二催化剂层 含有阻塞剂，不含有酸性物质。
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公开(公告)号：US06794330B2
公开(公告)日：2004-09-21
申请号：US09886145
申请日：2001-06-21
IPC分类号： B01J2108
CPC分类号： B01D53/9481 , B01D53/945 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2022 , B01D2255/2042 , B01D2255/20707 , B01D2255/20776 , B01D2255/30 , B01D2255/50 , B01D2255/9025 , B01D2255/91 , B01J23/58 , B01J27/1806 , B01J37/0244 , B01J37/0246 , B01J37/28 , F01N3/0814 , F01N3/0842 , F01N2510/063 , Y02T10/22
摘要： It is an object of the present invention to provide an exhaust gas purifying catalyst formed as a single catalyst that has a great deal of flexibility when being assembled into an exhaust system and that is capable of executing both an NOx absorbing function and a three-way function in a desired manner. To attain the this object, an absorbent catalyst layer to which an absorbent agent such as potassium and an acid material such as zeolite are added, an absorbent agent block layer formed of zeolite, and a three-way catalyst layer to which an acid material such as phosphorus is added are bonded together on a cordierite carrier. The acid material in the absorbent catalyst layer and the absorbent agent block layer inhibit the movement of the absorbent agent to the three-way catalyst layer, and transform the absorbent agent into harmless and stable potassium phosphate even if the absorbent agent reaches the three-way catalyst.
摘要翻译： 本发明的目的是提供一种形成为单一催化剂的废气净化催化剂，其在组装到排气系统中时具有大量的灵活性，并且能够同时执行NOx吸收功能和三通 以期望的方式起作用。 为了达到上述目的，添加了吸收剂如钾和酸性材料如沸石的吸收剂催化剂层，由沸石形成的吸收剂阻挡层，以及三元催化剂层，酸性材料 因为添加的磷在堇青石载体上结合在一起。 吸收剂催化剂层中的酸性物质和吸收剂阻挡层抑制吸收剂向三元催化剂层的移动，并且即使吸收剂达到三通，也将吸收剂转化为无害和稳定的磷酸钾 催化剂。
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公开(公告)号：US06790808B2
公开(公告)日：2004-09-14
申请号：US10365007
申请日：2003-02-12
IPC分类号： B01J2302
CPC分类号： B01D53/9422 , B01D2255/2022 , B01D2255/204 , B01D2255/20707 , B01D2255/20776 , B01D2255/50 , B01J23/58 , B01J35/04 , B01J37/0244 , B01J37/0246 , F01N3/0814 , Y10T29/49345
摘要： In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst layer in order to prevent the absorbing agent from moving from the catalyst layer into the carrier. This reduces the permeation of the absorbing agent added to the catalyst layer into a carrier, the evaporation and splash of the absorbing agent from the catalyst, and the deterioration in the durability and the exhaust gas purifying performance of the catalyst.
摘要翻译： 在排气净化催化剂中，将相对于吸收剂具有高亲和力的酸性物质分散并混合在添加有吸收剂的催化剂层中，或在催化剂层内形成酸物质层 以防止吸收剂从催化剂层移动到载体中。 这样可以减少添加到催化剂层中的吸收剂向载体中的渗透，吸收剂从催化剂的蒸发和飞溅以及催化剂的耐久性和废气净化性能的劣化。
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公开(公告)号：US06537946B1
公开(公告)日：2003-03-25
申请号：US09642366
申请日：2000-08-21
IPC分类号： B01J2302
CPC分类号： B01D53/9422 , B01D2255/2022 , B01D2255/204 , B01D2255/20707 , B01D2255/20776 , B01D2255/50 , B01J23/58 , B01J35/04 , B01J37/0244 , B01J37/0246 , F01N3/0814 , Y10T29/49345
摘要： In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst layer in order to prevent the absorbing agent from moving from the catalyst layer into the carrier. This reduces the permeation of the absorbing agent added to the catalyst layer into a carrier, the evaporation and splash of the absorbing agent from the catalyst, and the deterioration in the durability and the exhaust gas purifying performance of the catalyst.
摘要翻译： 在排气净化催化剂中，将相对于吸收剂具有高亲和力的酸性物质分散并混合在添加有吸收剂的催化剂层中，或在催化剂层内形成酸物质层 以防止吸收剂从催化剂层移动到载体中。 这样可以减少添加到催化剂层中的吸收剂向载体中的渗透，吸收剂从催化剂的蒸发和飞溅以及催化剂的耐久性和废气净化性能的劣化。
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公开(公告)号：US20100158768A1
公开(公告)日：2010-06-24
申请号：US12646578
申请日：2009-12-23
申请人： Kinichi IWACHIDO , Tetsuya Watanabe
发明人： Kinichi IWACHIDO , Tetsuya Watanabe
CPC分类号： B01J37/0244 , B01D53/945 , B01D2255/1023 , B01D2255/1025 , B01D2255/2047 , B01D2255/20715 , B01D2255/9022 , B01D2255/9202 , B01D2255/9205 , B01J23/58 , B01J23/63 , B01J37/0036 , B01J37/0234 , Y02T10/22
摘要： An exhaust gas purifying catalyst includes: a substrate; and a catalyst layer supported on the substrate and including: a surface layer including: rhodium (Rh); and a first support material including zirconia (ZrO2); and an inner surface layer including: palladium (Pd); and a second support material including magnesia (MgO).
摘要翻译： 废气净化催化剂包括：基材; 以及负载在所述基板上的催化剂层，包括：表面层，其包含：铑（Rh）; 和包括氧化锆（ZrO 2）的第一载体材料; 和内表面层，包括：钯（Pd）; 和包括氧化镁（MgO）的第二载体材料。
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公开(公告)号：US07877190B2
公开(公告)日：2011-01-25
申请号：US12361893
申请日：2009-01-29
CPC分类号： F02D41/107 , F02D41/025 , F02D41/0255 , F02D2250/21 , Y02T10/26
摘要： A fuel control device for an internal combustion engine determines that the internal combustion engine is in a transient state, by a criterion D, and makes fuel correction, where the transient-state criterion D is set to be a more relaxed criterion (=|ΔTHaf|) when forcible modulation control is being performed, compared with a normal criterion (=|ΔTHn|) used when the forcible modulation control is not being performed.
摘要翻译： 用于内燃机的燃料控制装置通过标准D来确定内燃机处于过渡状态，并且进行燃料校正，其中瞬态状态标准D被设置为更宽松的标准（= | | Dgr ; THaf |）与正在执行强制调制控制时所使用的正常标准（= |＆Dgr; THn |）进行比较时进行强制调制控制。
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公开(公告)号：US20090240421A1
公开(公告)日：2009-09-24
申请号：US12361893
申请日：2009-01-29
IPC分类号： F02D41/30
CPC分类号： F02D41/107 , F02D41/025 , F02D41/0255 , F02D2250/21 , Y02T10/26
摘要： A fuel control device for an internal combustion engine determines that the internal combustion engine is in a transient state, by a criterion D, and makes fuel correction, where the transient-state criterion D is set to be a more relaxed criterion (=|ΔTHaf|) when forcible modulation control is being performed, compared with a normal criterion (=|ΔTHn|) used when the forcible modulation control is not being performed.
摘要翻译： 用于内燃机的燃料控制装置通过标准D来确定内燃机处于过渡状态，并进行燃料校正，其中瞬态状态标准D被设置为更宽松的标准（= |ΔTHaf |）当执行强制调制控制时，与未执行强制调制控制时使用的正常标准（= |ΔTHn|）进行比较。
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公开(公告)号：US20080276920A1
公开(公告)日：2008-11-13
申请号：US11907915
申请日：2007-10-18
IPC分类号： F02D41/00
CPC分类号： F02D41/025 , F02D41/0255 , Y02T10/26
摘要： As forcible modulation parameters, a cycle and an amplitude are set so that O2 and CO concentrations in emissions at a catalyst inlet can be increased, and based upon the preset parameters, forcible modulation that forcibly fluctuates an exhaust air-fuel ratio is carried out to facilitate catalysis for early activation, and the forcible modulation is then switched to O2-F/B control.
摘要翻译： 作为强制调制参数，设定循环和振幅，使得在催化剂入口处的排放物中的O 2和CO浓度可以增加，并且基于预设参数，强制调制强制使排气 进行空燃比以促进早期激活的催化，然后将强制调制切换到O 2 -F / B控制。
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公开(公告)号：US06463734B1
公开(公告)日：2002-10-15
申请号：US09651653
申请日：2000-08-30
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N3/101 , F01N11/00 , F01N11/002 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2550/02 , F01N2550/03 , F01N2560/026 , F02D41/0235 , F02D41/0275 , F02D41/1446 , F02D2200/0804 , Y02T10/22 , Y02T10/47
摘要： An exhaust emission control device of an internal combustion engine, which purifies exhaust gas exhausted from the internal combustion engine, comprises: a catalyst device composed of a three way catalyst for purifying harmful substance in the exhaust gas when an exhaust air-fuel ratio is substantially stoichiometrical and an NOx catalyst having a function of absorbing NOx in the exhaust gas when the air-fuel ratio is closer to a lean air-fuel ratio than to the stoichiometrical air-fuel ratio, the catalyst device being provided in an exhaust passage of the internal combustion engine; catalyst deterioration determination means for determining deterioration state of the catalyst device, the deterioration resulting from at least temperature; and control means for deteriorating exhaust gas components flowing into the catalyst device much more than exhaust gas components flowing into the catalyst device when an air-fuel ratio of a mixture supplied to the internal combustion engine is substantially stoichiometrical, if the catalyst deterioration determination means determines that the catalyst device is in a predetermined deterioration state. The deterioration of an NOx absorbing function of the NOx catalyst results from at least the destabilization of absorbing material in the NOx catalyst, which is caused by the rise in the temperature. Thus, if the catalyst deterioration determination means determines that the catalyst device is in the predetermined deterioration state, the exhaust gas components flowing into the catalyst device are deteriorated much more than the exhaust gas components flowing into the catalyst device when the air-fuel ratio of the mixture supplied to the internal combustion engine is substantially stoichiometrical. Therefore, CO, H2, NOx, O2, THC and the like are supplied to the absorbing material to thereby stabilize the absorbing material as carbonate, nitrite or acid oxide. This prevents the heat deterioration. This extends a heat-resisting life of the catalyst device, and prevents the deterioration of an exhaust gas characteristic and the increase in cost.
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