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公开(公告)号：US09212582B2
公开(公告)日：2015-12-15
申请号：US13997885
申请日：2011-12-21
CPC分类号： F01N11/00 , F01N3/10 , F01N3/2066 , F01N3/208 , F01N2430/00 , F01N2610/105 , F01N2900/1616 , Y02T10/24
摘要： An exhaust gas purification system capable of preventing clogging of a reducing agent injection valve due to solidified urea aqueous solution to prevent a decrease in the exhaust gas purification efficiency of an internal-combustion engine. The exhaust gas purification system includes a diesel particulate filter, a reducing agent injection valve and an SCR catalyst in this order from the exhaust upstream side. A condition satisfaction determination section determines whether or not urea aqueous solution is likely to be solidified when detecting that an ignition switch is turned off, and an internal-combustion engine stop prevention section prevents the internal-combustion engine from being stopped, based on a determination by the condition satisfaction determination section.
摘要翻译： 一种废气净化系统，其能够防止由于固化的尿素水溶液堵塞还原剂注入阀，以防止内燃机的废气净化效率的降低。 废气净化系统从废气上游侧依次包括柴油机微粒过滤器，还原剂喷射阀和SCR催化剂。 条件满足判定部判定在检测到点火开关被切断时尿素水溶液是否可能凝固，并且内燃机停止防止部根据判定来防止内燃机停止 由条件满足判定部。
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公开(公告)号：US20130283769A1
公开(公告)日：2013-10-31
申请号：US13997885
申请日：2011-12-21
IPC分类号： F01N3/10
CPC分类号： F01N11/00 , F01N3/10 , F01N3/2066 , F01N3/208 , F01N2430/00 , F01N2610/105 , F01N2900/1616 , Y02T10/24
摘要： [Problem] To provide an exhaust gas purification system capable of preventing clogging of a reducing agent injection valve due to solidified urea aqueous solution to prevent decrease in the exhaust gas purification efficiency of an internal-combustion engine.[Means for Resolution] An exhaust gas purification system including a DPF, a reducing agent injection valve and an SCR catalyst in this order from the exhaust upstream side includes: a condition satisfaction determination section for determining whether or not urea aqueous solution is likely to be solidified when detecting that an ignition switch is turned off; and an internal-combustion engine stop prevention section for preventing the internal-combustion engine from being stopped, based on a determination by the condition satisfaction determination section.
摘要翻译： 本发明提供一种排气净化系统，其能够防止由于固化的尿素水溶液堵塞还原剂喷射阀，以防止内燃机的废气净化效率的降低。 [解决方法]从废气上游侧开始，依次包括DPF，还原剂注入阀和SCR催化剂的排气净化系统包括：条件满足判定部，其判定尿素水溶液是否可能为 检测到点火开关被关闭时固化; 以及内燃机停止防止部，其根据所述条件满足判定部的判定来防止所述内燃机停止。
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3.发明申请EXHAUST PURIFICATION SYSTEM AND METHOD FOR CONTROLLING EXHAUST PURIFICATION SYSTEM 有权排气净化系统及排气净化系统控制方法公开(公告)号：US20130269321A1
公开(公告)日：2013-10-17
申请号：US13997608
申请日：2011-12-21
IPC分类号： F01N3/20
CPC分类号： F01N3/208 , B01D53/9495 , F01N3/023 , F01N2430/00 , F01N2610/105 , F01N2900/0402 , F01N2900/1811 , Y02T10/24
摘要： Provided is an exhaust purification system capable of clearing a blockage of a reducing agent injection valve caused by solidification of an aqueous urea solution soon after starting an engine and preventing degradation in exhaust purification efficiency when starting an internal combustion engine. An exhaust purification system with a DPF, a reducing agent injection valve, and an SCR catalyst in order from the exhaust upstream side includes: an operation state detecting unit capable of detecting starting and stopping of the internal combustion engine; a forced regeneration control unit which performs forced regeneration of the DPF; a condition establishment determining unit which determines whether there is a possibility of solidification of the aqueous urea solution when the operation state detecting unit detects that the internal combustion engine is stopped; a data storage unit which stores the determination result of the condition establishment determining unit as data; and a blockage-clearing control unit which controls a temperature raising unit for raising the temperature of the reducing agent injection valve so as to raise the temperature of the reducing agent injection valve based on the data when starting the internal combustion engine.
摘要翻译： 提供一种排气净化系统，其能够在起动发动机后立即清除由于尿素水溶液的凝固而引起的还原剂注入阀的阻塞，并且防止在起动内燃机时排气净化效率的劣化。 从排气上游侧开始，具有DPF，还原剂喷射阀和SCR催化剂的排气净化系统包括：能够检测内燃机的起动和停止的运转状态检测单元; 执行DPF的强制再生的强制再生控制单元; 条件建立确定单元，当所述操作状态检测单元检测到所述内燃机停止时，确定是否存在所述尿素水溶液凝固的可能性; 数据存储单元，其将条件建立确定单元的确定结果存储为数据; 以及阻塞清除控制单元，其控制升温单元，用于提高所述还原剂喷射阀的温度，以便在启动所述内燃机时基于所述数据来提高所述还原剂喷射阀的温度。
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4.发明授权Exhaust purification system and method for controlling exhaust purification system 有权尾气净化系统及排气净化系统控制方法公开(公告)号：US09255511B2
公开(公告)日：2016-02-09
申请号：US13997608
申请日：2011-12-21
CPC分类号： F01N3/208 , B01D53/9495 , F01N3/023 , F01N2430/00 , F01N2610/105 , F01N2900/0402 , F01N2900/1811 , Y02T10/24
摘要： Provided is an exhaust purification system capable of clearing a blockage of a reducing agent injection valve caused by solidification of an aqueous urea solution soon after starting an engine and preventing degradation in exhaust purification efficiency when starting an internal combustion engine. An exhaust purification system with a DPF, a reducing agent injection valve, and an SCR catalyst in order from the exhaust upstream side includes: an operation state detecting unit capable of detecting starting and stopping of the internal combustion engine; a forced regeneration control unit which performs forced regeneration of the DPF; a condition establishment determining unit which determines whether there is a possibility of solidification of the aqueous urea solution when the operation state detecting unit detects that the internal combustion engine is stopped; a data storage unit which stores the determination result of the condition establishment determining unit as data; and a blockage-clearing control unit which controls a temperature raising unit for raising the temperature of the reducing agent injection valve so as to raise the temperature of the reducing agent injection valve based on the data when starting the internal combustion engine.
摘要翻译： 提供一种排气净化系统，其能够在起动发动机后立即清除由于尿素水溶液的凝固而引起的还原剂注入阀的阻塞，并且防止在起动内燃机时排气净化效率的劣化。 从排气上游侧开始，具有DPF，还原剂喷射阀和SCR催化剂的排气净化系统包括：能够检测内燃机的起动和停止的运转状态检测单元; 执行DPF的强制再生的强制再生控制单元; 条件建立确定单元，当所述操作状态检测单元检测到所述内燃机停止时，确定是否存在所述尿素水溶液凝固的可能性; 数据存储单元，其将条件建立确定单元的确定结果存储为数据; 以及阻塞清除控制单元，其控制升温单元，用于提高所述还原剂喷射阀的温度，以便在启动所述内燃机时基于所述数据来提高所述还原剂喷射阀的温度。
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公开(公告)号：US08371114B2
公开(公告)日：2013-02-12
申请号：US12530816
申请日：2007-10-16
申请人： Miwa Hayashi , Takeshi Miyamoto , Fumiyasu Kurogi
发明人： Miwa Hayashi , Takeshi Miyamoto , Fumiyasu Kurogi
CPC分类号： F01N3/2892 , B01D53/90 , B01D53/9431 , B01D2251/20 , B01F3/04049 , B01F5/0473 , B01F5/0614 , B01F5/0616 , B01F5/0618 , F01N3/0814 , F01N3/2066 , F01N13/0093 , F01N13/0097 , F01N2240/20 , F01N2470/30 , F01N2610/02 , Y02T10/24
摘要： The invention provides an exhaust gas purification apparatus for an internal combustion engine which evenly diffuses a reducing agent over an entirety of the exhaust gas which flows into an NOx catalyst disposed on the downstream side of thereof. The exhaust gas purification apparatus includes an NOx catalyst disposed in an exhaust gas passage of an internal combustion engine, and a reducing agent injecting unit for injecting the reducing agent into the exhaust gas passage which is on an upstream side of the NOx catalyst. A narrowed portion, in which a cross-sectional area of a flow passage is smaller than a cross-sectional area of the exhaust gas passage and of the NOx catalyst, is provided on a downstream side of an injecting position by the reducing agent injecting unit and the upstream side of the NOx catalyst, and a reducing agent diffusing device is provided on the narrowed portion.
摘要翻译： 本发明提供了一种用于内燃机的排气净化装置，其将还原剂均匀地扩散到流入设置在其下游侧的NOx催化剂的排气的整体上。 废气净化装置包括设置在内燃机的排气通道中的NOx催化剂和用于将还原剂注入到在NOx催化剂的上游侧的排气通道中的还原剂注入单元。 通过还原剂注入单元在注入位置的下游侧设置有流路的截面积小于排气通路和NOx催化剂的截面面积的狭窄部 和NOx催化剂的上游侧，还原剂扩散装置设置在变窄部分。
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6.发明申请CONTROL DEVICE AND CONTROL METHOD FOR EXHAUST GAS PURIFICATION APPARATUS, AND INTERNAL COMBUSTION ENGINE EXHAUST GAS PURIFICATION APPARATUS 有权用于排气净化装置的控制装置和控制方法，以及内燃机发动机排气净化装置公开(公告)号：US20100229530A1
公开(公告)日：2010-09-16
申请号：US12599834
申请日：2008-04-14
CPC分类号： F01N3/0871 , B01D53/9409 , B01D53/9495 , B01D2251/2062 , B01D2255/91 , B01D2258/012 , B01D2258/014 , F01N3/206 , F01N9/00 , F01N13/0097 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/146 , F01N2900/08 , F01N2900/1402 , F01N2900/1622 , Y02T10/47
摘要： There are provided a control device and a control method for an exhaust gas purification apparatus that can prevent the actual adsorption amount from becoming excessively lower than the saturated adsorption amount and can prevent the reduction efficiency of the reduction catalyst from degrading even when the temperature of catalyst continues to shift to a low temperature side for a predetermined time or longer. The device includes: a temperature transition determining means for predicting a transition of the temperature of the reduction catalyst and determining whether or not the temperature of the reduction catalyst continues to decrease for a predetermined time or longer; a first injection controlling means for injecting the reducing agent according to a first target adsorption amount that is a smaller value than a saturated adsorption amount of the reducing agent corresponding to the temperature of the reduction catalyst if it is determined that the temperature of the reduction catalyst does not decrease continuously for a predetermined time or longer; and a second injection controlling means for injecting the reducing agent according to a second target adsorption amount that is a value larger than the first target adsorption amount and smaller than the saturated adsorption amount if it is determined that the temperature of the reduction catalyst continuously decrease for a predetermined time or longer.
摘要翻译： 提供了一种用于排气净化装置的控制装置和控制方法，其可以防止实际吸附量变得过低于饱和吸附量，并且即使在催化剂的温度下也能够抑制还原催化剂的还原效率降低 继续向低温侧移动预定时间或更长时间。 该装置包括：温度转变确定装置，用于预测还原催化剂的温度转变并确定还原催化剂的温度是否持续降低预定时间或更长时间; 如果确定还原催化剂的温度，则第一注入控制装置根据第一目标吸附量注入还原剂，该第一目标吸附量小于与还原催化剂的温度相应的还原剂的饱和吸附量的值 不会连续减少预定时间或更长时间; 以及第二注入控制装置，用于如果确定还原催化剂的温度连续降低，则根据第二目标吸附量，其值大于第一目标吸附量，并且小于饱和吸附量， 预定时间或更长时间。
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7.发明授权公开(公告)号：US08413425B2
公开(公告)日：2013-04-09
申请号：US12599834
申请日：2008-04-14
CPC分类号： F01N3/0871 , B01D53/9409 , B01D53/9495 , B01D2251/2062 , B01D2255/91 , B01D2258/012 , B01D2258/014 , F01N3/206 , F01N9/00 , F01N13/0097 , F01N2560/026 , F01N2560/06 , F01N2560/14 , F01N2610/146 , F01N2900/08 , F01N2900/1402 , F01N2900/1622 , Y02T10/47
摘要： A control device and method for exhaust gas purification that can prevent the adsorption amount from becoming excessively lower than the saturated adsorption amount and can prevent the reduction efficiency of the reduction catalyst from degrading, including a device which can predict a transition of the temperature of the reduction catalyst and determine whether that temperature is decreasing; an apparatus which can control injection of the reducing agent according to a first amount that is smaller than a saturated amount corresponding to the temperature of the catalyst if it is determined that the temperature does not decrease continuously for a time; and a second apparatus which can control the injection of the reducing agent according to a second amount that is larger than the first amount and smaller than the saturated amount if it is determined that the temperature of the reduction catalyst continuously decreases for a time.
摘要翻译： 一种用于排气净化的控制装置和方法，其可以防止吸附量变得过低于饱和吸附量，并且可以防止还原催化剂的还原效率降低，包括可以预测该还原催化剂的温度转变的装置 还原催化剂，并确定温度是否在下降; 如果确定温度一度不连续减少，则可以根据小于对应于催化剂的温度的饱和量的第一量控制还原剂的注入的装置; 以及第二装置，如果确定还原催化剂的温度持续降低一段时间，则可以根据大于第一量的第二量控制还原剂的注入并小于饱和量。
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公开(公告)号：US20100083643A1
公开(公告)日：2010-04-08
申请号：US12530816
申请日：2007-10-16
申请人： Miwa Hayashi , Takeshi Miyamoto , Fumiyasu Kurogi
发明人： Miwa Hayashi , Takeshi Miyamoto , Fumiyasu Kurogi
IPC分类号： F01N3/04
CPC分类号： F01N3/2892 , B01D53/90 , B01D53/9431 , B01D2251/20 , B01F3/04049 , B01F5/0473 , B01F5/0614 , B01F5/0616 , B01F5/0618 , F01N3/0814 , F01N3/2066 , F01N13/0093 , F01N13/0097 , F01N2240/20 , F01N2470/30 , F01N2610/02 , Y02T10/24
摘要： There is provided an exhaust gas purification apparatus for an internal combustion engine which can make the exhaust gas in which a reducing agent is diffused uniformly over the entirety flow into an NOx catalyst disposed on the downstream side.An exhaust gas purification apparatus for an internal combustion engine including an NOx catalyst disposed in an exhaust gas passage of an internal combustion engine, and a reducing agent injecting unit for injecting a reducing agent into the exhaust gas passage that is on an upstream side of the NOx catalyst, is characterized in that a narrowed portion in which the cross-sectional area of a flow passage is smaller than the cross-sectional area of the exhaust gas passage and that of the NOx catalyst is provided on a downstream side of an injecting position by the reducing agent injecting unit and the upstream side of the NOx catalyst, and that reducing agent diffusing means is provided on the narrowed portion.
摘要翻译： 提供了一种用于内燃机的排气净化装置，其能够使整个流动中的还原剂均匀地扩散到排放在下游侧的NOx催化剂中的废气。 一种用于内燃机的排气净化装置，其包括设置在内燃机的排气通道中的NOx催化剂，以及还原剂注入单元，用于将还原剂注入到位于所述内燃机的上游侧的排气通道中 NOx催化剂的特征在于，在喷射位置的下游侧设置有流路的截面积小于排气通路的截面积和NOx催化剂的截面积的狭窄部 通过还原剂注入单元和NOx催化剂的上游侧，并且还原剂扩散装置设置在变窄的部分上。
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公开(公告)号：US08375703B2
公开(公告)日：2013-02-19
申请号：US12600799
申请日：2008-03-03
CPC分类号： F01N3/24 , B01D53/9431 , B01D53/9477 , B01D2251/2067 , B01D2251/208 , F01N3/2066 , F01N3/2892 , F01N2240/20 , F01N2470/22 , F01N2570/14 , F01N2610/00 , F01N2610/02 , Y02A50/2344 , Y02T10/24
摘要： An exhaust gas purification device is capable of diffusing and introducing a reducing agent into a NOx catalyst arranged in a downstream side exhaust gas passage. A housing of the device includes a main body in which an upstream side exhaust gas passage and the downstream side exhaust gas passage are housed, and a cap attached to a first surface of the main body provided with an outlet side opening of the upstream side exhaust gas passage and an inlet side opening of the downstream side exhaust gas passage. At least one of the first surface of the main body and a second surface in the cap which faces the first surface includes a guide portion, for guiding an exhaust gas flow, and a reducing agent diffusion portion, for facilitating mixing of the reducing agent with the exhaust gas.
摘要翻译： 排气净化装置能够将还原剂扩散并引入配置在下游侧排气通路中的NOx催化剂。 该装置的壳体包括容纳上游侧排气通道和下游侧排气通道的主体，以及安装在主体的第一表面上的盖，该盖设置有上游侧排气口的出口侧开口 气体通道和下游侧废气通道的入口侧开口。 主体的第一表面和面对第一表面的第二表面中的至少一个包括用于引导废气流的引导部分和还原剂扩散部分，用于促进还原剂与 废气。
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公开(公告)号：US20100146950A1
公开(公告)日：2010-06-17
申请号：US12600799
申请日：2008-03-03
CPC分类号： F01N3/24 , B01D53/9431 , B01D53/9477 , B01D2251/2067 , B01D2251/208 , F01N3/2066 , F01N3/2892 , F01N2240/20 , F01N2470/22 , F01N2570/14 , F01N2610/00 , F01N2610/02 , Y02A50/2344 , Y02T10/24
摘要： An exhaust gas purification device is provided that is capable of diffusing and introducing a reducing agent into a NOx catalyst arranged in a downstream side exhaust gas passage. The exhaust gas purification device is compact and has an exhaust gas passage that returns back in the middle thereof.A housing of the exhaust gas purification device includes a main body in which an upstream side exhaust gas passage and the downstream side exhaust gas passage are housed, and a cap which is attached to a first surface of the main body that is provided with an outlet side opening of the upstream side exhaust gas passage and an inlet side opening of the downstream side exhaust gas passage. The return portion is formed by a space surrounded by the main body and the cap. At least one of the first surface of the main body and a second surface in the cap which faces the first surface is provided with a guide portion, for guiding an exhaust gas flow, which is arranged in a direction intersecting with the first surface and the second surface, and a reducing agent diffusion portion, for facilitating mixing of the reducing agent with the exhaust gas, which is arranged in the middle of the flow of the exhaust gas guided by the guide portion.
摘要翻译： 本发明提供一种排气净化装置，其能够将还原剂扩散并引入配置在下游侧排气通路中的NOx催化剂。 废气净化装置是紧凑的并且具有在其中部返回的废气通道。 排气净化装置的壳体包括容纳上游侧排气通道和下游侧排气通路的主体，以及安装在主体的第一表面上的盖，该主体设置有出口 上游侧废气通道的侧面开口和下游侧排气通道的入口侧开口。 返回部分由主体和盖子包围的空间形成。 主体的第一表面和面对第一表面的盖的第二表面中的至少一个设置有引导部分，用于引导排气流，该排气流沿与第一表面相交的方向布置， 第二表面和还原剂扩散部分，用于促进还原剂与排气的混合，该废气布置在由导向部分引导的废气流中间。
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