公开(公告)号：US08607551B2

公开(公告)日：2013-12-17

申请号：US12736747

申请日：2009-06-01

申请人： Daiji Nagaoka ,  Teruo Nakada ,  Hiroyuki Yuza

发明人： Daiji Nagaoka ,  Teruo Nakada ,  Hiroyuki Yuza

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N3/2066 ,  B01D53/90 ,  B01D53/9409 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2251/208 ,  B01D2255/808 ,  B01D2258/012 ,  F01N3/0253 ,  F01N3/033 ,  F01N3/035 ,  F01N3/0807 ,  F01N3/0842 ,  F01N3/10 ,  F01N3/106 ,  F01N3/2821 ,  F01N3/2892 ,  F01N3/36 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/40 ,  F01N2510/06 ,  F01N2610/02 ,  F01N2610/03 ,  Y02T10/24

摘要： An exhaust gas purifier including an NOx catalyst of the selective reduction type and a diesel particulate filter arranged in series, and being disposed in an exhaust passage of an internal combustion engine. The purifier includes a passage for urea supply having a hydrolysis catalyst therein and a passage for hydrocarbon supply having an oxidation catalyst therein. The passages are parallel to each other and separate on an upstream side of both the NOx catalyst and the diesel particulate filter. A urea feeder which supplies urea to the passage for urea supply and a hydrocarbon feeder supplies hydrocarbon to the passage for hydrocarbon supply. The injection of an urea is thereby reconciled with the direction injection of hydrocarbon into the exhaust pipe in a compact space.

摘要翻译： 一种排气净化器，其包括选择还原型的NOx催化剂和串联布置的柴油机微粒过滤器，并且设置在内燃机的排气通道中。 净化器包括其中具有水解催化剂的用于尿素供应的通道和用于烃供应的通道，其中具有氧化催化剂。 通道彼此平行并在NOx催化剂和柴油机微粒过滤器的上游侧分离。 将尿素供给到用于尿素供给的通道的尿素进料器，碳氢化合物进料器将碳氢化合物供给到用于烃供应的通道。 因此，尿素的注射与在紧凑空间中将烃注入排气管的方向相协调。

公开(公告)号：US08528320B2

公开(公告)日：2013-09-10

申请号：US12736809

申请日：2009-04-15

申请人： Daiji Nagaoka ,  Teruo Nakada ,  Hiroyuki Yuza

发明人： Daiji Nagaoka ,  Teruo Nakada ,  Hiroyuki Yuza

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N3/0253 ,  F01N3/021 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2033 ,  F01N3/281 ,  F01N3/2821 ,  F01N13/009 ,  F01N2250/02 ,  F01N2330/02 ,  F01N2330/38 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2900/1602 ,  Y02T10/26

摘要： A system for exhaust gas purification including, in an exhaust passage of an internal combustion engine in order from an upstream side: a device for direct injection into the exhaust pipe, an oxidation catalyst, and at least one of a catalyst for NOx removal and a catalyzed diesel particulate filter. A support of the oxidation catalyst is a metallic material or a material having a specific heat not higher than that of the metallic material, and has a structure that mixes the exhaust gas. Regeneration of the NOx occlusion/reduction type catalyst by NOx removal and the forced regeneration of the catalyzed diesel particulate filter by particulate matter removal can occur even when the engine is operated under low-load conditions.

摘要翻译： 一种废气净化系统，其特征在于，包括在内燃机的排气通路中从上游侧开始的直接喷射到排气管的装置，氧化催化剂，以及至少一个NOx除去用催化剂和 催化柴油微粒过滤器。 氧化催化剂的载体是金属材料或具有不高于金属材料的比热的材料，并且具有混合排气的结构。 即使发动机在低负载条件下运转，也可以通过除去NOx并且通过颗粒物质去除来催化的柴油微粒过滤器的强制再生再生NOx吸留还原型催化剂。

公开(公告)号：US07963109B2

公开(公告)日：2011-06-21

申请号：US11659375

申请日：2005-07-26

申请人： Daiji Nagaoka ,  Masashi Gabe

发明人： Daiji Nagaoka ,  Masashi Gabe

IPC分类号： F01N3/00 ,  F01N3/10 ,  F01N1/00

CPC分类号： F01N3/0814 ,  B01D53/30 ,  B01D53/9495 ,  F01N3/0842 ,  F01N13/008 ,  F01N13/0097 ,  F01N2240/20 ,  F01N2470/18 ,  F01N2560/025 ,  F01N2570/14

摘要： Structure for guiding exhaust gas flow to an exhaust gas sensor in exhaust gas purification device installed in an exhaust passage, wherein a plurality of exhaust gas purification units is disposed in series in a container, the exhaust gas sensor is installed between the exhaust gas purification units and guide plates/pipes direct the exhaust gas flowing to the sensor to increase the exhaust gas sensor's responsiveness.

摘要翻译： 用于引导排气流向排气净化装置的废气净化装置的排气净化装置的结构，其中多个废气净化装置串联设置在容器内，排气传感器安装在排气净化装置 并且引导板/管道引导流到传感器的废气以增加废气传感器的响应性。

公开(公告)号：US07963103B2

公开(公告)日：2011-06-21

申请号：US11885407

申请日：2006-02-14

申请人： Daiji Nagaoka ,  Masashi Gabe

发明人： Daiji Nagaoka ,  Masashi Gabe

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N11/007 ,  B01D53/9409 ,  F01N3/0842 ,  F01N3/0871 ,  F01N9/00 ,  F01N11/002 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/1602 ,  F01N2900/1614 ,  F02D41/0055 ,  F02D41/0275 ,  F02D41/10 ,  F02D41/1446 ,  F02D2200/0806 ,  F02M26/05 ,  F02M26/23 ,  Y02T10/47

摘要： In regeneration control of an exhaust gas purification system (1) equipped with NOx occlusion reduction catalyst (11), a decision is made whether operating state of an engine is in a first engine operating range where the exhaust gas temperature is lower than a predetermined mode judgment temperature. If yes, EGR rich control is performed. Otherwise, injection rich control in exhaust pipe is performed. When EGR rich control is performed, a decision is made whether a vehicle is under acceleration or not. If a decision is made that the vehicle is under acceleration, regeneration control is postponed until that decision ends. This enables rich control for regeneration the NOx occlusion reduction catalyst (11), while avoiding deterioration in drivability (comfortableness) during acceleration of the vehicle.

摘要翻译： 在配备有NOx吸留还原催化剂（11）的排气净化系统（1）的再生控制中，判定发动机的运转状态是否处于排气温度低于预定模式的第一发动机工作范围 判断温度。 如果是，则执行EGR浓控制。 否则，执行排气管中的注入浓缩控制。 当执行EGR浓控制时，判定车辆是否处于加速状态。 如果决定车辆处于加速状态，再生控制将推迟到该决定结束。 由此，能够进一步控制NOx吸留还原催化剂（11）的再生，同时避免车辆加速时的驾驶性能（舒适性）的恶化。

公开(公告)号：US20110061366A1

公开(公告)日：2011-03-17

申请号：US12736809

申请日：2009-04-15

申请人： Daiji Nagaoka ,  Teruo Nakada ,  Hiroyuki Yuza

发明人： Daiji Nagaoka ,  Teruo Nakada ,  Hiroyuki Yuza

IPC分类号： F01N3/18 ,  F01N3/10

CPC分类号： F01N3/0253 ,  F01N3/021 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2033 ,  F01N3/281 ,  F01N3/2821 ,  F01N13/009 ,  F01N2250/02 ,  F01N2330/02 ,  F01N2330/38 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2900/1602 ,  Y02T10/26

摘要： A system for exhaust gas purification (1) which comprises, disposed in the exhaust passage (11) of an internal combustion engine (10) in the following order from the upstream side: a device (47) for direct injection into the exhaust pipe, an oxidation catalyst (31), and at least one of a catalyst for NOx removal (32) and a catalyzed DPF (33). The support of the oxidation catalyst (31) comprises a metallic material or a material having a specific heat not higher than that of the metallic material, and has a structure having the function of mixing the exhaust gas. As a result, the regeneration of the NOx occlusion/reduction type catalyst (32) by NOx removal and the forced regeneration of the catalyzed DPF (33) by PM removal can be practiced even when the internal combustion engine (1) is operated under low-load conditions.

摘要翻译： 1.一种排气净化系统（1），其特征在于，包括：从上游侧依次配置在内燃机（10）的排气通路（11）中：直接喷射到排气管的装置（47） 氧化催化剂（31）和用于除去NOx的催化剂（32）和催化的DPF（33）中的至少一种。 氧化催化剂（31）的载体包括金属材料或具有不高于金属材料的比热的材料，并且具有具有混合排气功能的结构。 结果，即使当内燃机（1）在低压下运行时，也可以通过除去NOx并且通过PM去除来催化的DPF（33）的强制再生来再生NOx吸留还原型催化剂（32） 载入条件。

公开(公告)号：US20100307132A1

公开(公告)日：2010-12-09

申请号：US12735710

申请日：2008-11-27

申请人： Hiroyuki Yuza ,  Teruo Nakada ,  Daiji Nagaoka

发明人： Hiroyuki Yuza ,  Teruo Nakada ,  Daiji Nagaoka

IPC分类号： F01N9/00 ,  F01N3/023 ,  F01N3/10

CPC分类号： F02D41/405 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9472 ,  B01D53/9495 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/2022 ,  B01D2255/2042 ,  F01N3/0253 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F02D41/0072 ,  F02D41/027 ,  F02D41/1446 ,  F02D41/182 ,  F02D2200/0802 ,  F02M26/05 ,  Y02T10/44

摘要： When the operating state of an internal combustion engine (10) is under low load, the supply of unburned fuel is controlled by using post-injection without using in-exhaust-pipe direct injection. Under medium load, the supply of the unburned fuel is controlled by using both the post-injection and the in-exhaust-pipe direct injection. Under high load, the supply of the unburned fuel is controlled by using the in-exhaust-pipe direct injection without using the post-injection. Thus, in air-fuel ratio rich control performed during regeneration to recover the purification capability of an exhaust gas purification apparatus, both black smoke and white smoke are reduced when the supply of the unburned fuel for supplying the unburned fuel into exhaust gas is controlled.

摘要翻译： 当内燃机（10）的运转状态为低负载时，通过使用后喷射而不使用排气管直接喷射来控制未燃烧燃料的供给。 在中等载荷下，通过使用后喷射和排气管直接喷射来控制未燃燃料的供应。 在高负载下，通过使用排气管直接喷射而不使用后喷射来控制未燃燃料的供应。 因此，在再生期间进行的空燃比丰富的控制中，为了回收排气净化装置的净化能力，当向未燃烧的燃料供给未燃燃料供给到排气中时，黑烟和白烟两者都被减少。

公开(公告)号：US20090056314A1

公开(公告)日：2009-03-05

申请号：US12224876

申请日：2007-04-09

申请人： Masashi Gabe ,  Daiji Nagaoka

发明人： Masashi Gabe ,  Daiji Nagaoka

IPC分类号： F01N3/20 ,  F02M25/07

CPC分类号： B01D53/9445 ,  B01D53/9409 ,  B01D53/9495 ,  F01N3/021 ,  F01N3/0835 ,  F01N3/0842 ,  F01N9/00 ,  F01N2430/06 ,  F02B29/0425 ,  F02D41/0055 ,  F02D41/027 ,  F02D41/0275 ,  F02D41/0295 ,  F02D2041/0017 ,  F02M26/05 ,  F02M26/23 ,  F02M26/35 ,  Y02T10/22 ,  Y02T10/47

摘要： An exhaust gas purification system (1) provided with an exhaust gas purification device (4), such as a NOx occlusion-reduction catalyst, in an exhaust passage (3) of an internal combustion engine (E), the exhaust gas purification device (4) purifying exhaust gas when the air-fuel ratio of exhaust gas in a lean state, and recovering purification ability when in a rich state. The system prevents highly dense, uncombusted fuel from acting as a binder that causes soot, together with the uncombusted fuel, to adhere to an EGR cooler (7) in an EGR passage (6) and thus clogging the EGR cooler (7). An uncombusted fuel adsorption device (20) for adsorbing uncombusted fuel is provided upstream to the EGR cooler (7) in the EGR passage (6), the uncombusted fuel adsorption device (20) adsorbing uncombusted fuel passing through the EGR passage (6) during a rich control.

摘要翻译： 在内燃机（E）的排气通路（3）中设置有诸如NOx吸留还原催化剂的排气净化装置（4）的废气净化系统（1），排气净化装置 4）当处于贫态的废气的空燃比时净化废气，并且在富状态时回收净化能力。 该系统防止高度致密的未燃燃料作为粘合剂，其引起烟尘与未燃燃料一起粘附到EGR通道（6）中的EGR冷却器（7），从而堵塞EGR冷却器（7）。 在EGR通路（6）的EGR冷却器（7）的上游设有用于吸附未燃燃料的未燃燃料吸附装置（20），未燃燃料吸附装置（20）吸附通过EGR通路（6）的未燃燃料 丰富的控制。

公开(公告)号：US20090044516A1

公开(公告)日：2009-02-19

申请号：US12224490

申请日：2006-11-22

申请人： Masashi Gabe ,  Daiji Nagaoka

发明人： Masashi Gabe ,  Daiji Nagaoka

IPC分类号： F01N3/023 ,  F01N3/00

CPC分类号： B01D53/9495 ,  B01D53/9431 ,  F01N3/0842 ,  F01N3/0885 ,  F01N2550/03 ,  F02D41/028 ,  F02D2200/0814 ,  F02D2200/0818

摘要： A method of controlling an NOx purification system (1), the system provided with an NOx occlusion reduction catalyst (22) and a control unit (30) that conducts NOx regeneration control and sulfur poisoning regeneration control. In the control method, the degree of deterioration of the NOx occlusion reduction catalyst (22) due to sulfur poisoning is estimated on the basis of the amount of the oxygen adsorbed and occluded at the NOx occlusion reduction catalyst (22) immediately after terminating the rich air-fuel state of the NOx regeneration control. In so doing, the amount of sulfur poisoning in the NOx occlusion reduction catalyst (22) is accurately estimated, and by performing sulfur poisoning regeneration at a suitable frequency, excessive sulfur poisoning regeneration can be avoided, thereby preventing the worsening of fuel consumption.

摘要翻译： 一种控制NOx净化系统（1）的方法，该系统具有进行NOx再生控制和硫中毒再生控制的NOx吸留还原催化剂（22）和控制单元（30）。 在控制方法中，由于硫中毒而导致的NOx吸留还原催化剂（22）的劣化程度是基于在终止富含氧化合物之后立即在NOx吸留还原催化剂（22）被吸附并吸收的氧的量 空气燃料状态的NOx再生控制。 这样做，能够准确地估计NOx吸留还原催化剂（22）中的硫中毒量，通过以适当的频率进行硫中毒再生，可以避免过度的硫中毒再生，从而防止燃料消耗的恶化。

公开(公告)号：US20070256405A1

公开(公告)日：2007-11-08

申请号：US11660312

申请日：2005-07-26

申请人： Masashi Gabe ,  Daiji Nagaoka

发明人： Masashi Gabe ,  Daiji Nagaoka

IPC分类号： F01N3/20

CPC分类号： F02D41/0275 ,  B01D53/9431 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/206 ,  F01N9/00 ,  F01N2370/02 ,  F01N2560/025 ,  F01N2610/03 ,  F01N2900/0412 ,  F02B37/00 ,  F02D41/0295 ,  F02D2200/0806 ,  Y02T10/144 ,  Y02T10/47

摘要： In exhaust gas purification system (10) including catalyst unit (50) carrying a NOx occlusion-reduction type catalyst, a first-stage rich control having a target air-fuel ratio lower than theoretical air-fuel ratio is conducted through addition of the amount of reducing agent meeting the amount of oxygen emitted in the initial stage of regeneration control. In the first-stage rich control, the completion of oxygen emission is judged on the basis of the oxygen concentration on the downstream side of catalyst unit (50). Upon determination of the completion of oxygen emission, a later-stage rich control close to the theoretical air-fuel ratio with the target air-fuel ratio increased over that of the first-stage rich control is carried out to thereby accomplish regeneration of the catalyst unit (50). As a result, during the regeneration control of the catalyst unit (50), there can be prevented not only any outflow of unpurified NOx occurring in the initial stage of regeneration but also any outflow of virgin reducing agents, such as HC and CO, occurring in the later stage of regeneration.

摘要翻译： 在包含具有NOx吸留还原型催化剂的催化剂单元（50）的排气净化系统（10）中，通过添加量比目标空燃比低于理论空燃比的第一级富控制 的还原剂满足在再生控制的初始阶段排出的氧气量。 在第一级富控制中，基于催化剂单元（50）的下游侧的氧浓度来判断氧排放的完成。 在确定氧气排放完成的情况下，进行接近理论空燃比的后级富控制，其中目标空燃比比第一级富控制增加，从而实现催化剂的再生 单位（50）。 结果，在催化剂单元（50）的再生控制期间，不仅可以防止在再生的初始阶段出现未净化的NOx的任何流出，还可以防止出现诸如HC和CO的原始还原剂的任何流出 在再生的后期阶段。

公开(公告)号：US20050109022A1

公开(公告)日：2005-05-26

申请号：US10969847

申请日：2004-10-22

申请人： Daiji Nagaoka ,  Masashi Gabe

发明人： Daiji Nagaoka ,  Masashi Gabe

IPC分类号： F01N3/02 ,  B01D53/86 ,  B01D53/94 ,  F01N3/023 ,  F01N3/025 ,  F01N3/029 ,  F01N3/035 ,  F01N3/08 ,  F01N3/18 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N11/00 ,  F01N13/02 ,  F02D41/02 ,  F02D41/04 ,  F02D41/14 ,  F01N3/00 ,  F01N3/10

CPC分类号： F02D41/028 ,  B01D53/9409 ,  B01D53/9495 ,  F02D41/0245 ,  F02D41/0275 ,  F02D41/029 ,  F02D2200/0818 ,  Y02T10/26

摘要： In an exhaust gas purifying system (1) for applying NOx purification by a NOx occlusion reduction type catalyst (42) and PM purification by a DPF (41) to the exhaust gas of an internal combustion engine, when it is judged that both regeneration of the DPF (41) and sulfur purge of the NOx occlusion reduction type catalyst (42) are necessary, the DPF regeneration control for raising the temperature of the DPF (41) is performed and the sulfur purge control for decreasing the oxygen concentration of the exhaust gas flowing into the NOx occlusion reduction type catalyst (42) is intermittently repeated. Thereby, it is possible to efficiently purge the sulfur accumulated in the NOx occlusion reduction type catalyst while preventing deterioration of fuel efficiency and discharge of NOx, HC, and CO into atmospheric air.

摘要翻译： 在用于通过NOx吸留还原型催化剂（42）进行NOx净化和通过DPF（41）对内燃机的排气进行PM净化的废气净化系统（1）中，当判断为 DPF（41）和NOx吸留还原型催化剂（42）的硫吹扫是必要的，进行用于提高DPF（41）的温度的DPF再生控制，并且用于降低排气的氧浓度的硫清除控制 间歇地重复流入NOx吸留还原型催化剂（42）的气体。 由此，可以有效地清除积存在NOx吸留还原型催化剂中的硫，同时防止燃料效率的劣化和NOx，HC和CO排放到大气中。