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公开(公告)号：US20160303509A1
公开(公告)日：2016-10-20
申请号：US15098454
申请日：2016-04-14
CPC分类号： B01D53/9418 , B01D53/9431 , B01D53/9495 , B01D2251/2062 , B01D2251/2067 , B01D2255/9022 , B01D2257/404 , B01J23/002 , B01J23/34 , B01J29/072 , B01J37/0244 , B01J37/0246 , B01J2229/186 , F01N3/208 , F01N11/002 , F01N2370/02 , F01N2550/02 , F01N2610/02 , F01N2610/1453 , F01N2610/146 , F01N2900/1402 , F01N2900/1404 , F01N2900/1602 , Y02T10/24
摘要： An apparatus may have a selective catalytic reduction NOx catalyst including a high-temperature catalyst layer having high capability of reducing NOx at high temperatures and a low-temperature catalyst layer having higher capability of reducing NOx at low temperatures than that of the high-temperature catalyst layer. The low-temperature catalyst layer may be arranged closer to a catalyst substrate than the high-temperature catalyst layer. A supply valve may add an addition quantity of reducing agent for reducing NOx to exhaust gas flowing into the selective catalytic reduction NOx catalyst. A controller may comprise at least one processor configured to control addition of the reducing agent by the supply valve such that the reducing agent concentration in a reducing agent atmosphere formed in the exhaust gas flowing into the selective catalytic reduction NOx catalyst is higher when the temperature of the selective catalytic reduction NOx catalyst is in a specific low temperature range.
摘要翻译： 装置可以具有选择性催化还原NOx催化剂，其包括在高温下具有高还原NOx能力的高温催化剂层和在低温下具有比低温催化剂低的NOx还原能力的低温催化剂层 层。 低温催化剂层可以布置成比高温催化剂层更靠近催化剂基板。 供给阀可以向流入选择性催化还原NOx催化剂的废气中添加减少NOx的还原剂的添加量。 控制器可以包括至少一个处理器，其被配置为控制由供给阀添加还原剂，使得当流入选择性催化还原NOx催化剂的废气中形成的还原剂气氛中的还原剂浓度在 选择性催化还原NOx催化剂处于特定的低温范围。
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公开(公告)号：US20160303512A1
公开(公告)日：2016-10-20
申请号：US15098633
申请日：2016-04-14
IPC分类号： B01D53/94
CPC分类号： B01D53/9495 , B01D53/9418 , B01D2251/2067 , B01D2255/20738 , B01D2255/20761 , B01D2255/50 , B01D2255/9022 , B01D2255/911 , B01D2258/012 , B01J23/002 , B01J23/34 , B01J29/072 , B01J37/0244 , B01J37/0246 , B01J2229/186 , B01J2523/00 , F01N3/103 , F01N3/2066 , F01N3/208 , F01N9/00 , F01N2510/06 , F01N2900/1411 , F01N2900/1602 , F01N2900/1818 , Y02T10/24 , Y02T10/47 , B01J2523/3712 , B01J2523/43 , B01J2523/72
摘要： An object is to provide technology that enables an NOx catalyst to exercise its NOx reduction capability satisfactorily at any flow speed of the exhaust gas flowing into the NOx catalyst. An exhaust gas purification apparatus for an internal combustion engine includes a selective catalytic reduction NOx catalyst including at least a first catalyst layer having capability of reducing NOx and a second catalyst layer having oxidation capability and arranged closer to a catalyst substrate than the first catalyst layer. The apparatus has a supply valve for adding a specific addition quantity of reducing agent for reducing NOx to inflowing exhaust gas flowing into the selective catalytic reduction NOx catalyst. The apparatus further has a controller that is configured to control addition of the reducing agent by the supply valve based on the flow speed of the inflowing exhaust gas in such a way that the concentration of the reducing agent in a reducing agent atmosphere formed in the inflowing exhaust gas in a reducing agent addition period becomes equal to a specific concentration that is determined based on the flow speed of the inflowing exhaust gas and at which the reducing agent is assumed not to reach the second catalyst layer, when the temperature of the selective catalytic reduction NOx catalyst exceeds a specific temperature at which reduction of NOx by the first catalyst layer is carried out.
摘要翻译： 本发明的目的是提供使NOx催化剂在流入NOx催化剂的废气的任何流速下令人满意地运行其NOx还原能力的技术。 一种内燃机的废气净化装置，具备选择性催化还原型NOx催化剂，其至少具有能够还原NO x的第一催化剂层和具有氧化能力的第二催化剂层，并且比第一催化剂层更靠近催化剂基板。 该装置具有用于向流入选择性催化还原NOx催化剂的流入废气中添加特定添加量的用于还原NOx的还原剂的供给阀。 该装置还具有控制器，其被配置为基于流入废气的流速控制供给阀的还原剂的添加，使得在流入中形成的还原剂气氛中的还原剂的浓度 还原剂添加期间的排气变得等于基于流入废气的流速确定的特定浓度，并且假定还原剂不会到达第二催化剂层时，选择催化剂的温度 还原NOx催化剂超过由第一催化剂层进行NOx还原的特定温度。
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公开(公告)号：US20170138235A1
公开(公告)日：2017-05-18
申请号：US15311252
申请日：2015-05-20
发明人： Yoshihisa TSUKAMOTO , Kazuhiro ITOH , Hiromasa NISHIOKA , Daichi IMAI , Hiroshi OHTSUKI , Yasumasa NOTAKE
CPC分类号： F01N3/0232 , B01D46/0078 , B01D46/446 , B01D46/46 , B01D2279/30 , F01N3/023 , F01N3/0234 , F01N3/027 , F01N9/002 , F01N9/007 , F01N11/002 , F01N2550/04 , F01N2900/0412 , F01N2900/0601 , F01N2900/1404 , F01N2900/1406 , F01N2900/1602 , F01N2900/1606 , F02D41/024 , F02D41/029 , Y02T10/26 , Y02T10/47
摘要： An estimated trapped amount (PM) that is an estimated value of an amount of particulate matter that is trapped in a particulate filter arranged in an engine exhaust passage is calculated based on an engine operating state, and PM removal control is performed when the estimated trapped amount exceeds an upper limit amount. Reference temperature increase control is performed to remove the particulate matter from the particulate filter, and an actual temperature that is the temperature of the particulate filter while the reference temperature increase control is being performed is detected. A reference temperature that is the temperature of the particulate filter when it is assumed that the reference temperature increase control has been performed when the amount of particulate matter trapped in the particulate filter is a reference initial trapped amount is stored in advance. The estimated trapped amount is corrected based on the actual temperature and the reference temperature.
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公开(公告)号：US20160153335A1
公开(公告)日：2016-06-02
申请号：US14945951
申请日：2015-11-19
发明人： Kazuhiro ITOH , Hiromasa NISHIOKA , Yoshihisa TSUKAMOTO , Hiroshi OHTSUKI , Yasumasa NOTAKE , Hiroki MURATA
CPC分类号： F01N3/208 , B01D53/9431 , B01D53/9495 , B01D2251/2062 , F01N3/2066 , F01N2240/40 , F01N2260/024 , F01N2560/06 , F01N2610/02 , F01N2610/10 , F01N2610/105 , F01N2610/14 , F01N2610/144 , F01N2610/146 , F01N2610/1473 , F01N2900/1404 , F01N2900/1602 , F01N2900/1626 , F01N2900/1631 , F01N2900/1808 , F01N2900/1811 , Y02T10/24
摘要： An exhaust gas purification apparatus of an internal combustion engine includes: a reducing agent passage that connects a tank and an injection valve; a heater that heats up a hydrolysis catalyst that is provided in the reducing agent passage; and a controller comprising at least one processor configured to control a pump so that a reducing agent located further toward a side of the injection valve than the hydrolysis catalyst flows toward a side of the hydrolysis catalyst after completion of injection of a reducing agent in a state where the hydrolysis catalyst is at a temperature lower than the hydrolysis temperature and before start of injection of a reducing agent in a state where the hydrolysis catalyst is at a temperature equal to or higher than the hydrolysis temperature.
摘要翻译： 一种内燃机的废气净化装置，具备连接罐和喷射阀的还原剂通路， 加热器，其加热设置在还原剂通道中的水解催化剂; 以及控制器，其包括配置成控制泵的至少一个处理器，使得在完全注入还原剂的状态下，进一步朝向注射阀侧面的还原剂比水解催化剂流向水解催化剂的侧面 其中水解催化剂处于低于水解温度的温度下，并且在水解催化剂的温度等于或高于水解温度的状态下开始注入还原剂。
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