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1.发明授权
公开(公告)号：EP0756072B1
公开(公告)日：2002-03-20
申请号：EP96112023.5
申请日：1996-07-25
发明人： Hanafusa, Toru , Ohashi, Michihiro
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/023 , F01N2570/16 , Y02T10/47
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公开(公告)号：EP0723805A3
公开(公告)日：1997-02-19
申请号：EP96101174.9
申请日：1996-01-26
发明人： Kinugasa, Yukio , Igarashi, Kouhei , Itou, Takaaki , Takaoka, Toshifumi , Ohashi, Michihiro , Yokota, Koji
IPC分类号： B01D53/94
CPC分类号： B01D53/9481 , B01D53/9409 , B01D53/9436 , B01D53/9495 , F01N3/0842 , F01N3/0871 , F01N3/206 , F01N3/22 , F01N3/222 , F01N13/009 , F01N2230/04 , F01N2240/25 , F01N2250/12 , F01N2610/02 , Y02T10/22
摘要： The method for purifying combustion exhaust gas according to the present invention utilizes a NH 3 decomposing catalyst. The NH 3 decomposing catalyst in the present invention is capable of converting substantially all of the NH 3 in the combustion exhaust gas to N 2 when the air-fuel ratio of the exhaust gas is lean and the temperature of the catalyst is within a predetermined optimum temperature range. Further, when the exhaust gas contains NO x in addition to NH 3 , the NH 3 decomposing catalyst is capable of reducing the NO x in the optimum temperature range even though the air-fuel ratio of the exhaust gas is lean. In the present invention, the conditions of the exhaust gas containing NO x are adjusted before it is fed to the NH 3 decomposing catalyst in such a manner that the temperature of the exhaust gas is within the optimum temperature range and the air-fuel ratio of the exhaust gas is lean. Further, NH 3 is added to the exhaust gas before it is fed to the NH 3 decomposing catalyst. Therefore, a lean air-fuel ratio exhaust gas, at a temperature within the optimum temperature range, which contains both the NO x and NH 3 is fed to the NH 3 decomposing catalyst, and the NO x , as well as the NH 3 , in the exhaust gas is completely resolved by the NH 3 decomposing catalyst.
摘要翻译： 根据本发明的用于净化燃烧废气的方法使用NH 3分解催化剂。 本发明中的NH 3分解催化剂能够在排气的空燃比稀并且催化剂的温度在预定的最佳温度范围内时将燃烧排气中的基本全部NH 3转化为N 2。 此外，当废气含有除NH3之外的NOx时，即使废气的空燃比为稀，NH3分解催化剂也能够在最佳温度范围内还原NOx。 在本发明中，在排气的温度处于最佳温度范围内并且排气的空燃比在排气温度范围内的情况下，调节含有NO x的排气的条件，然后将其输入NH 3分解催化剂 天然气是精益。 此外，在将NH 3供给到NH 3分解催化剂之前，将NH 3加入到废气中。 因此，在含有NOx和NH3的最佳温度范围内的温度下的稀空燃比排气被供给到NH3分解催化剂，并且排气中的NOx以及NH3是 通过NH3分解催化剂完全分解。
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3.发明公开
公开(公告)号：EP0756072A2
公开(公告)日：1997-01-29
申请号：EP96112023.5
申请日：1996-07-25
发明人： Hanafusa, Toru , Ohashi, Michihiro
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/023 , F01N2570/16 , Y02T10/47
摘要： A device for determining the abnormal degree of deterioration of catalyst of a catalytic converter arranged in an internal combustion engine exhaust system is disclosed. The device comprises ability value grasping means for grasping an ability value in relation with a current purification ability of the catalyst and varying amount grasping means for grasping a varying amount of the ability value grasped by the ability value grasping means. It is determined that the degree of deterioration of the catalyst is abnormal when the varying amount grasped by the varying amount grasping means is smaller than a predetermined value.
摘要翻译： 公开了一种用于确定布置在内燃机排气系统中的催化转化器的催化剂的恶化程度的装置。 该装置包括用于掌握与催化剂的当前净化能力相关的能力值的能力值获取装置和用于掌握能力值掌握装置掌握的能力值变化量的变化量掌握装置。 当由变化量掌握装置掌握的变化量小于预定值时，确定催化剂的变质程度是异常的。
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公开(公告)号：EP0723805B1
公开(公告)日：2002-01-09
申请号：EP96101174.9
申请日：1996-01-26
发明人： Kinugasa, Yukio , Igarashi, Kouhei , Itou, Takaaki , Takaoka, Toshifumi , Ohashi, Michihiro , Yokota, Koji
IPC分类号： B01D53/94
CPC分类号： B01D53/9481 , B01D53/9409 , B01D53/9436 , B01D53/9495 , F01N3/0842 , F01N3/0871 , F01N3/206 , F01N3/22 , F01N3/222 , F01N13/009 , F01N2230/04 , F01N2240/25 , F01N2250/12 , F01N2610/02 , Y02T10/22
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公开(公告)号：EP0756072A3
公开(公告)日：1997-11-19
申请号：EP96112023.5
申请日：1996-07-25
发明人： Hanafusa, Toru , Ohashi, Michihiro
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/023 , F01N2570/16 , Y02T10/47
摘要： A device for determining the abnormal degree of deterioration of catalyst of a catalytic converter arranged in an internal combustion engine exhaust system is disclosed. The device comprises ability value grasping means for grasping an ability value in relation with a current purification ability of the catalyst and varying amount grasping means for grasping a varying amount of the ability value grasped by the ability value grasping means. It is determined that the degree of deterioration of the catalyst is abnormal when the varying amount grasped by the varying amount grasping means is smaller than a predetermined value.
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6.发明公开
公开(公告)号：EP0723805A2
公开(公告)日：1996-07-31
申请号：EP96101174.9
申请日：1996-01-26
发明人： Kinugasa, Yukio , Igarashi, Kouhei , Itou, Takaaki , Takaoka, Toshifumi , Ohashi, Michihiro , Yokota, Koji
IPC分类号： B01D53/94
CPC分类号： B01D53/9481 , B01D53/9409 , B01D53/9436 , B01D53/9495 , F01N3/0842 , F01N3/0871 , F01N3/206 , F01N3/22 , F01N3/222 , F01N13/009 , F01N2230/04 , F01N2240/25 , F01N2250/12 , F01N2610/02 , Y02T10/22
摘要： The method for purifying combustion exhaust gas according to the present invention utilizes a NH 3 decomposing catalyst. The NH 3 decomposing catalyst in the present invention is capable of converting substantially all of the NH 3 in the combustion exhaust gas to N 2 when the air-fuel ratio of the exhaust gas is lean and the temperature of the catalyst is within a predetermined optimum temperature range. Further, when the exhaust gas contains NO x in addition to NH 3 , the NH 3 decomposing catalyst is capable of reducing the NO x in the optimum temperature range even though the air-fuel ratio of the exhaust gas is lean. In the present invention, the conditions of the exhaust gas containing NO x are adjusted before it is fed to the NH 3 decomposing catalyst in such a manner that the temperature of the exhaust gas is within the optimum temperature range and the air-fuel ratio of the exhaust gas is lean. Further, NH 3 is added to the exhaust gas before it is fed to the NH 3 decomposing catalyst. Therefore, a lean air-fuel ratio exhaust gas, at a temperature within the optimum temperature range, which contains both the NO x and NH 3 is fed to the NH 3 decomposing catalyst, and the NO x , as well as the NH 3 , in the exhaust gas is completely resolved by the NH 3 decomposing catalyst.
摘要翻译： 根据本发明的用于净化燃烧废气的方法利用NH 3分解催化剂。 本发明中的NH 3分解催化剂能够在废气的空燃比稀薄且催化剂的温度在规定的最佳温度范围内时将燃烧废气中的大部分NH 3转化成N2。 此外，当排气中含有除NH 3之外的NOx时，NH 3分解催化剂即使排气的空燃比较弱也能够在最佳温度范围内还原NOx。 在本发明中，在将废气的温度设定在最佳温度范围内并排气的空燃比的前提下，调节含有NOx的排气的条件，然后送入NH 3分解催化剂 天然气是瘦的。 此外，在将其输入到NH 3分解催化剂之前，将NH 3加入到废气中。 因此，将含有NOx和NH 3的温度在最佳温度范围内的贫空燃比废气送入NH 3分解催化剂，排气中的NOx以及NH 3为 完全由NH3分解催化剂分解。
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