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公开(公告)号：US20090158716A1
公开(公告)日：2009-06-25
申请号：US12227350
申请日：2007-05-24
IPC分类号： F01N3/20
CPC分类号： F01N11/002 , F01N3/0814 , F01N3/0842 , F01N2550/02 , F02D41/025 , F02D41/0275 , F02D41/405 , F02D2200/0802 , Y02T10/26 , Y02T10/47
摘要： The present invention is to provide a technique which can detect the level of degradation of a precatalyst in an exhaust gas purification system for an internal combustion engine that includes a NOx catalyst arranged on an exhaust passage of the internal combustion engine, and the precatalyst arranged on the exhaust passage at a location upstream of the NOx catalyst and having an oxidation function. In the present invention, the level of degradation of the precatalyst is detected based on the width of change in temperature of the NOx catalyst at the time when a reducing agent is intermittently supplied from an upstream side of the precatalyst to the precatalyst and the NOx catalyst. At this time, it is determined that the larger the width of change in temperature of the NOx catalyst, the higher the level of degradation of the oxidation catalyst is.
摘要翻译： 本发明提供一种能够检测内燃机的排气净化系统中的预催化剂的劣化水平的技术，所述内燃机的排气净化系统包括配置在内燃机的排气通路上的NOx催化剂， 在NOx催化剂上游的位置具有氧化功能的排气通道。 在本发明中，根据从催化剂前体向预催化剂间歇地供给还原剂和NOx催化剂时的NOx催化剂的温度变化的宽度来检测预催化剂的劣化程度， 。 此时，确定NOx催化剂的温度变化幅度越大氧化催化剂的降解程度越高。
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2.发明授权公开(公告)号：US06381952B1
公开(公告)日：2002-05-07
申请号：US09696024
申请日：2000-10-26
IPC分类号： F01N300
CPC分类号： F02D41/405 , F02D9/04 , F02D41/024 , F02D41/221 , Y02T10/26 , Y02T10/44
摘要： An exhaust temperature raising apparatus has an exhaust throttle valve that adjusts the engine exhaust amount based on the amount of throttling, and an injector that performs main injection and a sub-injection directly into a cylinder, a combination of an ECU, the injection and the exhaust throttle valve as exhaust gas temperature increase apparatus for, during an engine warm-up, performing and controlling the exhaust throttling by the exhaust valve and performing and controlling an exhaust gas temperature increase through combustion attributed to the main injection performed in an excess-air condition and combustion attributed to the sub-injection, an exhaust gas temperature sensor that monitors a state of temperature increase of the exhaust gas caused by performance of the exhaust gas temperature increase apparatus, and the ECU as monitor abnormality detection apparatus for determining whether the exhaust gas temperature sensor has an abnormality, and the ECU as exhaust gas temperature increase stop apparatus for stopping the operation of the exhaust gas temperature increase apparatus when the ECU determines that the exhaust gas temperature sensor has an abnormality.
摘要翻译： 排气温度提升装置具有排气节流阀，该排气节流阀基于节流量调节发动机排气量，以及直接进入气缸的主喷射和次喷射的喷射器，ECU的组合，喷射和 排气节流阀作为排气温度升高装置，用于在发动机预热期间，通过排气阀执行和控制排气节流，并且通过在过量空气中执行的主喷射进行燃烧执行和控制排气温度升高 归因于副喷射的状况和燃烧，排气温度传感器，其监测由排气温度升高装置的性能引起的废气的升温状态，ECU作为监视异常检测装置，用于确定排气 气体温度传感器有异常，而ECU作为废气温度调节 当ECU判断为排气温度传感器异常时，重新设定停止排气升温装置的运转的停止装置。
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公开(公告)号：US06192675B1
公开(公告)日：2001-02-27
申请号：US09184047
申请日：1998-11-02
申请人： Shinya Hirota , Toshiaki Tanaka , Kouji Yoshizaki , Nobumoto Ohashi , Eiji Iwasaki , Kazuhiro Itoh
发明人： Shinya Hirota , Toshiaki Tanaka , Kouji Yoshizaki , Nobumoto Ohashi , Eiji Iwasaki , Kazuhiro Itoh
IPC分类号： F01N300
CPC分类号： F01N3/2066 , B01D53/9431 , B01D53/9495 , F01N3/2053 , F01N13/0097 , F01N2610/02 , F01N2610/03 , F01N2610/04 , F02B37/18 , Y02T10/144 , Y02T10/24
摘要： In an exhaust gas purification device, a catalytic converter containing selective reduction catalysts is disposed in an exhaust gas passage of an internal combustion engine capable of being operated at a lean air-fuel ratio. The catalytic converter includes a plurality of the selective reduction catalysts disposed in series in the casing of the catalytic converter. Bypass passages which supply the exhaust gas to downstream selective reduction catalysts in the casing by bypassing the upstream catalysts are provided. When a reducing agent is supplied to the exhaust gas upstream of the converter, a part of the supplied reducing agent directly reaches the downstream selective reduction catalyst through the bypass passages without being oxidized by the upstream selective reduction catalysts. Therefore, the NOx purifying abilities of the downstream catalysts are improved and the formation of sulfates on the downstream catalysts is suppressed.
摘要翻译： 在废气净化装置中，含有选择还原催化剂的催化转化器设置在能够以稀薄空燃比运转的内燃机的排气通路中。 催化转化器包括多个选择性还原催化剂串联设置在催化转化器的壳体中。 提供了通过绕过上游催化剂将排气供给到壳体中的下游选择性还原催化剂的旁路通道。 当还原剂被供给到转化器上游的废气时，所供给的还原剂的一部分通过旁路通道直接到达下游选择还原催化剂，而不被上游选择还原催化剂氧化。 因此，下游催化剂的NOx净化能力得到改善，并且抑制了下游催化剂上形成硫酸盐。
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公开(公告)号：US6101999A
公开(公告)日：2000-08-15
申请号：US276816
申请日：1999-03-26
申请人： Nobumoto Ohashi , Toshiaki Tanaka , Eiji Iwasaki , Shinya Hirota , Kouji Yoshizaki , Kazuhiro Itoh
发明人： Nobumoto Ohashi , Toshiaki Tanaka , Eiji Iwasaki , Shinya Hirota , Kouji Yoshizaki , Kazuhiro Itoh
IPC分类号： F02M25/07 , F01N3/08 , F01N3/20 , F01N3/24 , F02B3/06 , F02B47/08 , F02D21/08 , F02D41/02 , F02D41/04 , F02D41/38 , F02B17/00
CPC分类号： F02D41/3827 , F01N3/0842 , F02B47/08 , F02D41/0057 , F02D41/3064 , F02B3/06 , F02D2041/0022 , F02D2041/389 , F02D2200/0602 , F02D2250/31 , F02D2250/32 , F02D41/3845 , F02M26/15 , F02M26/23 , Y02T10/22 , Y02T10/47
摘要： A compression ignition type engine, wherein a first combustion where the amount of the recirculated exhaust gas supplied to the combustion chamber is larger than the amount of recirculated exhaust gas where the amount of production of soot peaks and almost no soot is produced and a second combustion where the amount of recirculated exhaust gas supplied to the combustion chamber is smaller than the amount of recirculated exhaust gas where the amount of production of soot peaks are selectively switched between and wherein the air-fuel ratio is temporarily made rich immediately before switching from the first combustion to the second combustion or immediately after switching from the second combustion to the first combustion.
摘要翻译： 一种压缩点火式发动机，其中，供给到所述燃烧室的再循环废气量大于产生烟灰产生量并且几乎不产生烟灰的再循环排气量的第一燃烧和第二燃烧 其中供应到燃烧室的再循环废气的量小于在其之间选择性地切换烟灰峰的产生量之间的再循环废气的量，并且其中空燃比在从第一 燃烧到第二燃烧或在从第二燃烧切换到第一燃烧之后。
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公开(公告)号：US06233927B1
公开(公告)日：2001-05-22
申请号：US09362287
申请日：1999-07-27
申请人： Shinya Hirota , Toshiaki Tanaka , Nobumoto Ohashi , Kazuhiro Itoh , Eiji Iwasaki , Kouji Yoshizaki
发明人： Shinya Hirota , Toshiaki Tanaka , Nobumoto Ohashi , Kazuhiro Itoh , Eiji Iwasaki , Kouji Yoshizaki
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0231 , F01N3/027 , F01N3/0821 , F01N3/0878 , F01N3/30 , F01N2410/04 , Y10S55/30
摘要： According to the present invention, there is provided an exhaust gas purification device, comprising a NOx absorbent arranged in an exhaust passage of an engine for absorbing NOx therein when an air-fuel ratio of an exhaust gas flowing into the NOx absorbent is lean, the NOx absorbent discharging NOx absorbed therein when a concentration of the oxygen in the exhaust gas flowing into the NOx absorbent decreases, a trapping element arranged in the exhaust passage upstream of the NOx absorbent for trapping particulates, a processing element for processing the particulates trapped in the trapping element to regenerate the trapping element, and a preventing element for preventing the exhaust gas from flowing into the NOx absorbent from the trapping element when the trapping element is regenerated.
摘要翻译： 根据本发明，提供了一种废气净化装置，其包括当流入所述NOx吸收剂的排气的空燃比稀的时候，所述排气净化装置包括设置在用于吸收NOx的发动机的排气通道中的NOx吸收体， NOx吸收剂，其中，当流入NOx吸收剂的排气中的氧浓度降低时，吸收NOx的吸收剂中的NOx吸收剂，用于捕集微粒的NOx吸收剂上游排出通道的捕集元件， 捕获元件以再生捕集元件，以及防止元件，用于在捕获元件再生时防止废气从捕集元件中流入NOx吸收剂。
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公开(公告)号：US6058700A
公开(公告)日：2000-05-09
申请号：US83738
申请日：1998-05-22
申请人： Tetsuya Yamashita , Toshiaki Tanaka , Shinichi Takeshima , Shinya Hirota , Eiji Iwasaki , Kouji Yoshizaki , Nobumoto Ohashi , Kazuhiro Itoh
发明人： Tetsuya Yamashita , Toshiaki Tanaka , Shinichi Takeshima , Shinya Hirota , Eiji Iwasaki , Kouji Yoshizaki , Nobumoto Ohashi , Kazuhiro Itoh
CPC分类号： F01N3/0842 , F02D41/0275 , F02D41/028 , F01N2570/04 , F02D2200/0806
摘要： A device for purifying the exhaust gas of an engine comprises a NO.sub.X absorbent arranged in the exhaust passage. The NO.sub.X absorbent absorbs NO.sub.X therein when the air-fuel ratio of the inflowing exhaust gas is lean, and releases the absorbed NO.sub.X therefrom when the oxygen concentration in the inflowing exhaust gas becomes lower. The NO.sub.X absorbent also absorbs SO.sub.X therein when the air-fuel ratio of the inflowing exhaust gas is lean, and releases the absorbed SO.sub.X therefrom when the oxygen concentration in the inflowing exhaust gas becomes lower, with the temperature of the NO.sub.X absorbent being higher than a SO.sub.X releasing temperature. The air-fuel ratio of the exhaust gas flowing to the NO.sub.X absorbent is made rich temporarily when the temperature of the NO.sub.X absorbent is higher than SO.sub.X releasing temperature and when the flow rate of the exhaust gas flowing through the NO.sub.X absorbent is lower than a predetermined flow rate, to release the absorbed SO.sub.X from the NO.sub.X absorbent.
摘要翻译： 用于净化发动机废气的装置包括布置在排气通道中的NO x吸收剂。 当流入的废气的空燃比是稀的时，NO x吸收剂吸收其中的NOX，并且当流入的废气中的氧浓度变低时，释放吸收的NO x。 当流入的废气的空燃比是稀的时，NOX吸收剂也吸收SO x，并且当流入废气中的氧浓度变低时，NOX吸收剂的温度高于 SOX释放温度。 当NOX吸收剂的温度高于SOX释放温度时，当流过NOX吸收剂的排气的流量低于预定的NO x吸收剂时，流入NOX吸收剂的排气的空燃比暂时变浓 流量，从NOX吸收剂中释放吸收的SOX。
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公开(公告)号：US20100257847A1
公开(公告)日：2010-10-14
申请号：US12599212
申请日：2008-07-11
申请人： Hiromasa Nishioka , Shinya Hirota , Kotaro Hayashi , Takamitsu Asanuma , Kohei Yoshida , Hiroshi Otsuki
发明人： Hiromasa Nishioka , Shinya Hirota , Kotaro Hayashi , Takamitsu Asanuma , Kohei Yoshida , Hiroshi Otsuki
CPC分类号： F01N3/0814 , B01D46/006 , B01D46/42 , B01D53/9422 , B01D53/9477 , B01D53/949 , B01D2255/915 , B01D2257/302 , B01D2279/30 , F01N3/0253 , F01N3/0807 , F01N3/085 , F01N3/0885 , F01N13/009 , F01N2250/14 , F01N2570/04 , F01N2610/03
摘要： In the present exhaust purification system of an internal combustion engine, a particulate filter is arranged downstream of an NOx storage/reduction catalyst device and an S trap device is arranged upstream of the NOx storage/reduction catalyst device. A first fuel supplying means for supplying additional fuel for regeneration of the particulate filter to the exhaust system upstream of the S trap device or into the cylinder is provided. An amount of the additional fuel supplied by the first fuel supplying means is controlled to make the S trap device not release SOx. A second fuel supplying means is provided in the exhaust system between the NOx storage/reduction catalyst device and the particulate filter to make up for a deficiency of the additional fuel supplied by the first fuel supplying means in the regeneration treatment of the particulate filter.
摘要翻译： 在本发明的内燃机的排气净化系统中，在NOx吸留还原催化剂装置的下游配置微粒过滤器，在NOx吸留还原催化剂装置的上游配置有S阱装置。 提供第一燃料供给装置，用于向颗粒过滤器再生的附加燃料供给到S捕集装置上游的排气系统或气缸。 控制由第一燃料供应装置供应的附加燃料的量使得S捕集装置不释放SOx。 第二燃料供给装置设置在NOx存储/还原催化剂装置和微粒过滤器之间的排气系统中，以弥补由微粒过滤器的再生处理中由第一燃料供给装置供应的附加燃料的不足。
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8.发明授权公开(公告)号：US07685812B2
公开(公告)日：2010-03-30
申请号：US10537748
申请日：2004-10-04
IPC分类号： F01N3/00
CPC分类号： F02D41/0275 , B01D53/9481 , B01D53/9495 , F01N3/0842 , F01N3/0871 , F01N2610/03 , F02B37/00 , F02D41/024 , F02D2200/0802 , F02D2200/0806 , Y02A50/2345 , Y02T10/26
摘要： A NOx storing catalyst (11) comprising a precious metal catalyst (46) and NOx absorbent (47) is arranged in an exhaust passage. When the air-fuel ratio of the exhaust gas is lean, the storing catalyst cold stores the NO2 contained in the exhaust in the absorbent when the catalyst is inactive and hot stores the cold stored NO2 in the absorbent when the catalyst is made active. The NO2 contained in the exhaust is cold stored in the absorbent when the catalyst is not activated, and when a predetermined NOx storing catalyst restoring condition (107) is met, a NOx storing catalyst restoring control (109, 115) including raising the NOx storing catalyst temperature to a predetermined temperature to active it (109) is executed so as to restore the cold storing capability of the NOx absorbent.
摘要翻译： 包含贵金属催化剂（46）和NOx吸收剂（47）的NOx储存催化剂（11）布置在排气通道中。 当排气的空燃比为稀时，当催化剂不活动时，储存催化剂冷存储在吸收剂中的排气中的NO 2，并且当催化剂活化时，将热的储存的NO 2储存在吸收剂中。 当催化剂未被活化时，排气中含有的NO2被冷藏在吸收剂中，并且当满足预定的NOx储存催化剂恢复条件（107）时，存储催化剂复原控制（109,115）包括提高NOx储存 催化剂温度达到预定温度以使其活化（109），以恢复NOx吸收剂的冷藏能力。
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公开(公告)号：US20090038291A1
公开(公告)日：2009-02-12
申请号：US12083009
申请日：2006-12-01
申请人： Kohei Yoshida , Shinya Hirota , Takamitsu Asanuma
发明人： Kohei Yoshida , Shinya Hirota , Takamitsu Asanuma
IPC分类号： F01N3/20
CPC分类号： B01D53/9454 , B01D53/9477 , B01D53/9495 , B01D2257/302 , B01D2258/012 , F01N3/0821 , F01N3/0842 , F01N3/085 , F01N3/0885 , F01N13/009 , F01N13/0097 , F01N2900/102 , F01N2900/1612 , F02B37/00 , F02D29/02 , F02D41/028 , F02D41/0285 , F02D41/029 , F02D41/405 , F02D2200/0625 , Y02A50/2324 , Y02T10/22
摘要： A post-treatment system comprised of an SOx trapping catalyst (11), a particulate filter (13) carrying an NOx storing and reducing catalyst, and an NOx storing and reducing catalyst (15) and a fuel feed valve (17) for feeding fuel for post processing to the post-treatment system are arranged in an engine exhaust passage. Each time an operating period of the engine passes a certain period, values of operating parameters of the engine and the method of feeding the post-treatment use fuel are reset so that the total amount of consumption of the combustion use fuel and post-treatment use fuel becomes smallest while maintaining the amounts of the harmful components discharged into the atmosphere at below the regulatory values.
摘要翻译： 由SOx捕集催化剂（11），带有NOx储存和还原催化剂的颗粒过滤器（13）和用于供给燃料的NOx储存和还原催化剂（15）和燃料供给阀（17）组成的后处理系统 用于后处理的后处理系统布置在发动机排气通道中。 每当发动机的运转时间经过一段时间时，重新设定发动机的运转参数值和供给后处理用途燃料的方法，使得燃烧用燃料和后处理用途的总消耗量 燃料变得最小，同时将排放到大气中的有害成分的量保持在监管值以下。
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公开(公告)号：US20080302090A1
公开(公告)日：2008-12-11
申请号：US12155382
申请日：2008-06-03
CPC分类号： F01N3/0814 , F01N3/0842 , F01N3/085 , F01N13/009 , F01N13/0093 , F01N13/0097 , F01N2510/06 , F01N2510/0684 , F01N2570/04 , F01N2610/03
摘要： An SOX trap catalyst 12 and NOX purification catalyst 13 are arranged in an engine exhaust passage. A substrate 50 of the NOX purification catalyst 13 is formed with a coat layer comprised of at least the two layers of an upper coat layer 51 and a lower coat layer 52. The lower coat layer 52 is formed from an NOX storage catalyst storing the NOX contained in the exhaust gas when the air-fuel ratio of the exhaust gas is lean and releasing the stored NOX when the air-fuel ratio of the exhaust gas is a stoichiometric air-fuel ratio or rich. The upper coat layer 51 is formed from a material of a weaker basicity than this NOX storage catalyst.
摘要翻译： 在发动机排气通道中设置有SO x捕集催化剂12和NO x净化催化剂13。 NO x净化催化剂13的基板50由至少两层上涂层51和下涂层52构成的涂层形成。下涂层52由储存有NOX的NO x储存催化剂形成 当排气的空燃比为稀的时，排气中的废气中含有的废气中的空气燃料比为理论空燃比或浓，释放储存的NO x。 上涂层51由比该NO x储存催化剂的碱性弱的材料形成。
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