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。

公开(公告)号：US09611811B2

公开(公告)日：2017-04-04

申请号：US14366041

申请日：2011-12-19

申请人： Nobumoto Ohashi ,  Taro Aoyama ,  Naoya Okamoto ,  Yoshio Yamashita ,  Yuki Haba ,  Hajime Takagawa ,  Koki Uno ,  Naoki Takeuchi ,  Masashi Shinoda ,  Teruhiko Miyake ,  Koji Nakayama

发明人： Nobumoto Ohashi ,  Taro Aoyama ,  Naoya Okamoto ,  Yoshio Yamashita ,  Yuki Haba ,  Hajime Takagawa ,  Koki Uno ,  Naoki Takeuchi ,  Masashi Shinoda ,  Teruhiko Miyake ,  Koji Nakayama

IPC分类号： F01P7/00 ,  F02M25/07 ,  F02D21/08 ,  F01P7/14 ,  F01P11/16 ,  F02D41/00 ,  F02M26/50 ,  F02M26/28 ,  F02M26/32 ,  F02M26/33 ,  F01P7/16 ,  F01P3/02

CPC分类号： F02M26/33 ,  F01P7/14 ,  F01P7/16 ,  F01P7/165 ,  F01P11/16 ,  F01P2003/027 ,  F01P2003/028 ,  F01P2025/32 ,  F02D21/08 ,  F02D41/0065 ,  F02D2041/007 ,  F02M26/28 ,  F02M26/32 ,  F02M26/50

摘要： The influenced of condensed water on an EGR device is alleviated. A device (100) that controls a cooling system including adjusting means for being able to adjust a circulation amount of coolant in a first flow passage, including an engine cooling flow passage, an EGR cooling flow passage and a radiator flow passage, and a second flow passage, including the engine cooling flow passage, the EGR cooling flow passage and a bypass flow passage and not including the radiator flow passage, includes: measuring means for measuring a temperature of the coolant; limiting means for limiting circulation of the coolant at starting an internal combustion engine; and control means for circulating the coolant preferentially through the second flow passage via control over the adjusting means based on the measured temperature in a period in which circulation of the coolant is limited.

公开(公告)号：US08307638B2

公开(公告)日：2012-11-13

申请号：US12450065

申请日：2008-03-17

申请人： Nobumoto Ohashi ,  Atsushi Hayashi ,  Masahide Iida ,  Kotaro Hayashi

发明人： Nobumoto Ohashi ,  Atsushi Hayashi ,  Masahide Iida ,  Kotaro Hayashi

IPC分类号： F01N3/00

CPC分类号： F02D41/024 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/20 ,  B01D2258/012 ,  F01N3/208 ,  F01N9/00 ,  F01N13/009 ,  F01N2550/02 ,  F02D41/028 ,  F02D41/029 ,  F02D2250/26 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： An object of the invention is to recover the capability of an exhaust gas purification apparatus provided in an exhaust passage of an internal combustion engine with improved reliability. According to the invention there are provided recovery control execution unit for executing a recovery control in which the temperature of the exhaust gas purification apparatus is raised by supply of reducing agent to a precatalyst to thereby recover the capability of the exhaust gas purification apparatus and prohibition range setting unit for setting a recovery control prohibition range that is an operation range of the internal combustion engine in which execution of the recovery control by the recovery control execution unit is prohibited. The higher the degree of deterioration of the precatalyst is, the higher the maximum values of the engine torque and the engine revolution number in the recovery control prohibition range are set to be.

摘要翻译： 本发明的目的是提高可靠性来恢复设置在内燃机的排气通道中的废气净化装置的能力。 根据本发明，提供了一种恢复控制执行单元，用于执行恢复控制，其中废气净化装置的温度通过向预催化剂供应还原剂而升高，从而恢复废气净化装置的能力和禁止范围 设定单元，用于设定作为恢复控制执行单元执行恢复控制的内燃机的操作范围的恢复控制禁止范围。 预催化剂的劣化程度越高，恢复控制禁止范围内的发动机转矩和发动机转数的最大值越高。

公开(公告)号：US08250856B2

公开(公告)日：2012-08-28

申请号：US12517485

申请日：2008-05-01

申请人： Nobumoto Ohashi

发明人： Nobumoto Ohashi

IPC分类号： F01N3/00

CPC分类号： B01D53/9459 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2255/1021 ,  B01D2255/50 ,  B01D2255/90 ,  B01D2257/404 ,  B01D2257/406 ,  B01D2257/702 ,  F01N3/2066 ,  F01N2240/22 ,  F01N2610/02 ,  F01N2610/1406 ,  Y02A50/2325 ,  Y02T10/24

摘要： In an internal combustion engine, an NOX selective reducing catalyst (15) is arranged in an engine exhaust passage. Aqueous urea is fed from an aqueous urea feed valve (17) into the NOX selective reducing catalyst (15) to selectively reduce the NOX contained in the exhaust gas with the ammonia generated from the aqueous urea. The moisture contained in the exhaust gas is recovered and stored in a water tank (21). It is provided with a high concentration aqueous urea tank (22) storing high concentration aqueous urea having a higher urea concentration than the urea concentration of the aqueous urea fed to the NOX selective reducing catalyst (15), and the high concentration aqueous urea is diluted with the recovered moisture thereby generating aqueous urea fed to the NOX selective reducing catalyst (15).

摘要翻译： 在内燃机中，在发动机排气通路中配置NO x选择还原催化剂（15）。 将尿素水从尿素供给阀（17）供给到NO X选择还原催化剂（15）中，以从尿素水中产生的氨选择性地还原废气中的NOX。 包含在排气中的水分被回收并储存在水箱（21）中。 设置有高浓度尿素水箱（22），其存储具有比供给到NOX选择还原催化剂（15）的尿素水溶液的尿素浓度高的尿素浓度的高浓度尿素水，并且将高浓度尿素水稀释 回收的水分，从而产生供给NOX选择还原催化剂（15）的含水尿素。

公开(公告)号：US20110083427A1

公开(公告)日：2011-04-14

申请号：US12733427

申请日：2009-01-13

申请人： Bungo Kawaguchi ,  Shinji Kamoshita ,  Tomihisa Oda ,  Nobumoto Ohashi ,  Satoshi Kobayakawa

发明人： Bungo Kawaguchi ,  Shinji Kamoshita ,  Tomihisa Oda ,  Nobumoto Ohashi ,  Satoshi Kobayakawa

IPC分类号： F01N9/00

CPC分类号： F01N3/208 ,  F01N3/025 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/2033 ,  F01N3/2066 ,  F01N9/002 ,  F01N13/009 ,  F01N13/0097 ,  F01N2570/14 ,  F01N2900/1402 ,  F01N2900/1404 ,  F02D41/0245 ,  F02D41/0275 ,  F02D41/029 ,  F02D2200/0802 ,  F02D2200/0806 ,  F02D2200/0812 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： The present invention provides an internal combustion engine exhaust purification apparatus includes a filter configured to collect particulate matter contained in exhaust gas, a selective catalytic reduction converter provided downstream of the filter to reduce nitrogen oxide contained, an oxidation catalyst converter with an adsorption function provided upstream of the converter to temporarily adsorb the nitrogen oxide contained in the exhaust gas, a burner configured to increase the temperature of the exhaust gas flowing into the filter, the selective catalytic reduction converter, and the oxidation catalyst converter to set the temperature of the filter to at least a predetermined recovery temperature, thus recovering the filter, and an ECU configured to inhibit the burner from being started when the burner is otherwise to be started but if the selective catalytic reduction converter has not been activated.

摘要翻译： 本发明提供一种内燃机排气净化装置，其包括：滤器，其构造成收集废气中所含的颗粒物质;选择性催化还原转化器，其设置在所述过滤器的下游，以减少所含的氮氧化物;上游的吸附功能的氧化催化剂转化器 所述转炉用于临时吸附废气中所含的氮氧化物;燃烧器，其配置为增加流入所述过滤器的排气的温度，所述选择性催化还原转化器和所述氧化催化剂转化器，以将所述过滤器的温度设定为 至少预定的恢复温度，从而恢复过滤器;以及ECU，其被配置为当燃烧器否则启动时禁止燃烧器启动，但是如果选择性催化还原转化器未被激活。

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。

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

IPC分类号： F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F02D41/02 ,  F02D41/04 ,  F01N3/00

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。

公开(公告)号：US08375706B2

公开(公告)日：2013-02-19

申请号：US12678635

申请日：2008-09-18

申请人： Masahide Iida ,  Nobumoto Ohashi ,  Atsushi Hayashi

发明人： Masahide Iida ,  Nobumoto Ohashi ,  Atsushi Hayashi

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N3/0885 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/00 ,  F01N2560/025 ,  F01N2560/027 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2900/1612 ,  Y02T10/47

摘要： A technique is provided which is capable of completing SOx poisoning recovery control on a NOx storage reduction catalyst in a shorter period of time. In the course of the SOx poisoning recovery control, the degree of decrease of a SOx release speed resulting from a decrease in an amount of SOx occlusion of the NOx catalyst (the degree of decrease of the SOx release speed (Ddw)) with respect to that at the time of start of the SOx poisoning recovery control is estimated. In accordance with the increasing degree of decrease of the SOx release speed (Ddw), a catalyst bed temperature (Tc) is caused to rise up to a higher side target temperature (Tct), and at the same time an exhaust gas air fuel ratio (A/F) is caused to lower up to a richer side target air fuel ratio (A/Ft), whereby the SOx release speed Vsox during the SOx poisoning recovery control is suppressed from lowering.

摘要翻译： 提供了能够在更短的时间内完成对NOx吸留还原催化剂的SOx中毒恢复控制的技术。 在SOx中毒恢复控制过程中，由于NOx催化剂的SOx吸收量的降低（SOx释放速度（Ddw）的降低程度））而导致的SOx释放速度的降低程度相对于 在SOx中毒恢复控制开始时估计。 根据SO x释放速度（Ddw）的增加的降低程度，使催化剂床温度（Tc）上升到更高的侧目标温度（Tct），同时排气空燃比 （A / F）降低到更浓的侧目标空燃比（A / Ft），从而抑制在SOx中毒恢复控制期间的SOx释放速度Vsox降低。

公开(公告)号：US20100212296A1

公开(公告)日：2010-08-26

申请号：US12678635

申请日：2008-09-18

申请人： Masahide Iida ,  Nobumoto Ohashi ,  Atsushi Hayashi

发明人： Masahide Iida ,  Nobumoto Ohashi ,  Atsushi Hayashi

IPC分类号： F02D43/00 ,  F01N3/10 ,  F01N9/00

CPC分类号： F01N3/0885 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/00 ,  F01N2560/025 ,  F01N2560/027 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2900/1612 ,  Y02T10/47

摘要： A technique is provided which is capable of completing SOx poisoning recovery control on a NOx storage reduction catalyst in a shorter period of time. In the course of the SOx poisoning recovery control, the degree of decrease of a SOx release speed resulting from a decrease in an amount of SOx occlusion of the NOx catalyst (the degree of decrease of the SOx release speed (Ddw)) with respect to that at the time of start of the SOx poisoning recovery control is estimated. In accordance with the increasing degree of decrease of the SOx release speed (Ddw), a catalyst bed temperature (Tc) is caused to rise up to a higher side target temperature (Tct), and at the same time an exhaust gas air fuel ratio (A/F) is caused to lower up to a richer side target air fuel ratio (A/Ft), whereby the SOx release speed Vsox during the SOx poisoning recovery control is suppressed from lowering.

摘要翻译： 提供了能够在更短的时间内完成对NOx吸留还原催化剂的SOx中毒恢复控制的技术。 在SOx中毒恢复控制过程中，由于NOx催化剂的SOx吸收量的降低（SOx释放速度（Ddw）的降低程度））而导致的SOx释放速度的降低程度相对于 在SOx中毒恢复控制开始时估计。 根据SO x释放速度（Ddw）的增加的降低程度，使催化剂床温度（Tc）上升到更高的侧目标温度（Tct），同时排气空燃比 （A / F）降低到更浓的侧目标空燃比（A / Ft），从而抑制在SOx中毒恢复控制期间的SOx释放速度Vsox降低。

公开(公告)号：US20090049825A1

公开(公告)日：2009-02-26

申请号：US12224997

申请日：2007-04-26

申请人： Nobumoto Ohashi

发明人： Nobumoto Ohashi

IPC分类号： F01N9/00

CPC分类号： F02D41/0275 ,  F01N3/0842 ,  F01N3/0871 ,  F01N2250/14 ,  F01N2610/03 ,  F02B37/00 ,  F02D41/024 ,  F02D2200/0802 ,  Y02T10/26

摘要： A NOx absorbent is arranged in an exhaust passage of an internal combustion engine, and a fuel supply valve (28) is arranged in the exhaust passage upstream of the NOx absorbent. If the temperature of the NOx absorbent is lower than a predetermined temperature when the NOx must be released from the NOx absorbent, the air-fuel ratio of exhaust gas flowing through the NOx absorbent is first switched from a basic lean air-fuel ratio to and maintained at a lean air-fuel ratio with a lower leanness for a predetermined lean time, and is then switched to a rich air-fuel ratio. If the temperature of the NOx absorbent is higher than the predetermined temperature when the NOx must be released from the NOx absorbent, the air-fuel ratio of the exhaust gas flowing through the NOx absorbent is switched to the rich air-fuel ratio without being switched to the lean air-fuel ratio with a lower leanness.

摘要翻译： NOx吸收剂布置在内燃机的排气通道中，燃料供给阀（28）布置在NOx吸收剂上游的排气通路中。 如果NO x吸收剂的温度低于NOx必须从NOx吸收剂释放出来的预定温度，则首先将流过NOx吸收剂的废气的空燃比从碱性稀空燃比转换为 维持在稀薄的空气燃料比，具有较低的稀释度，预定的稀释时间，然后被切换到浓空燃比。 如果NOx必须从NOx吸收剂中释放出来，NOx吸收剂的温度高于预定温度，则流过NOx吸收剂的废气的空燃比被切换为浓空燃比而不被切换 到稀薄的空气燃料比，具有较低的稀薄度。