公开(公告)号：US07797927B2

公开(公告)日：2010-09-21

申请号：US12085093

申请日：2006-09-20

申请人： Daiji Nagaoka ,  Masashi Gabe ,  Takehito Imai ,  Shinji Hara

发明人： Daiji Nagaoka ,  Masashi Gabe ,  Takehito Imai ,  Shinji Hara

IPC分类号： F01N3/00

CPC分类号： B01D53/9495 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/0871 ,  F01N3/208 ,  F01N9/002 ,  F01N11/002 ,  F01N13/0097 ,  F01N2550/02 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/0412 ,  F02D41/0047 ,  F02D41/028 ,  F02D41/1446 ,  F02D41/146 ,  F02D2200/602 ,  Y02T10/47

摘要： The degree of a deterioration in catalyst is determined when the following requirements are satisfied: the operating state of an internal combustion engine (E) is in a predetermined operating state; and the temperature (T1m) of an exhaust gas, which flows into a catalyst (12), is in a second temperature range (ΔT80) in which the upper limit of the second temperature range (ΔT80) is 10% below the upper limit of a first temperature range (ΔT100) between the activation start temperature (Ta) and the activation end temperature (Tb) of the catalyst (12) before a deterioration and the lower limit of the second temperature range (ΔT80) is 10% above the lower limit of the first temperature range (ΔT100). A deterioration index temperature (Tic) is regarded as a shift level of light-off characteristics of the catalyst (12) toward the higher temperature side, and the deterioration index temperature (Tic) is added to the reference determination temperature (T0b) before the deterioration, and the sum is used as the determination temperature (T0) for exhaust gas temperature raising control. According to the above constitution, the degree of deterioration of the catalyst (12) can be estimated without using a concentration sensor for an exhaust gas component such as an NOx concentration sensor with high accuracy, and the worsening of the state of the exhaust gas is suppressed while minimizing the worsening of the fuel consumption.

摘要翻译： 当满足以下要求时，确定催化剂的劣化程度：内燃机（E）的运行状态处于预定的运行状态; 流入催化剂（12）的废气的温度（T1m）处于第二温度范围（＆Dgr; T80）的第二温度范围（＆Dgr; T80），其中第二温度范围（＆Dgr; T80）的上限为10％以下 劣化前的催化剂（12）的活化开始温度（Ta）和活化终止温度（Tb）之间的第一温度范围（＆Dgr; T100）的上限和第二温度范围的下限（＆Dgr; T80）比第一温度范围（＆Dgr; T100）的下限高10％。 劣化指数温度（Tic）被认为是催化剂（12）朝向高温侧的发光特性的偏移水平，并且将劣化指数温度（Tic）加到基准确定温度（T0b）之前 劣化，并且将该和作为废气升温控制的测定温度（T0）。 根据上述结构，可以在不使用高精度的NOx浓度传感器等排气成分用浓度传感器的情况下推定催化剂（12）的劣化程度，废气状态的恶化为 在最小化燃料消耗的恶化的同时被抑制。

公开(公告)号：US20090120069A1

公开(公告)日：2009-05-14

申请号：US12085093

申请日：2006-09-20

申请人： Daiji Nagaoka ,  Masashi Gabe ,  Takehito Imai ,  Shinji Hara

发明人： Daiji Nagaoka ,  Masashi Gabe ,  Takehito Imai ,  Shinji Hara

IPC分类号： F01N9/00

CPC分类号： B01D53/9495 ,  F01N3/0253 ,  F01N3/035 ,  F01N3/0871 ,  F01N3/208 ,  F01N9/002 ,  F01N11/002 ,  F01N13/0097 ,  F01N2550/02 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/0412 ,  F02D41/0047 ,  F02D41/028 ,  F02D41/1446 ,  F02D41/146 ,  F02D2200/602 ,  Y02T10/47

摘要： The degree of a deterioration in catalyst is determined when the following requirements are satisfied: the operating state of an internal combustion engine (E) is in a predetermined operating state; and the temperature (T1m) of an exhaust gas, which flows into a catalyst (12), is in a second temperature range (ΔT80) in which the upper limit of the second temperature range (ΔT80) is 10% below the upper limit of a first temperature range (ΔT100) between the activation start temperature (Ta) and the activation end temperature (Tb) of the catalyst (12) before a deterioration and the lower limit of the second temperature range (ΔT80) is 10% above the lower limit of the first temperature range (ΔT100). A deterioration index temperature (Tic) is regarded as a shift level of light-off characteristics of the catalyst (12) toward the higher temperature side, and the deterioration index temperature (Tic) is added to the reference determination temperature (T0b) before the deterioration, and the sum is used as the determination temperature (T0) for exhaust gas temperature raising control. According to the above constitution, the degree of deterioration of the catalyst (12) can be estimated without using a concentration sensor for an exhaust gas component such as an NOx concentration sensor with high accuracy, and the worsening of the state of the exhaust gas is suppressed while minimizing the worsening of the fuel consumption.

摘要翻译： 当满足以下要求时，确定催化剂的劣化程度：内燃机（E）的运行状态处于预定的运行状态; 并且流入催化剂（12）的废气的温度（T1m）处于第二温度范围（ΔT80）的第二温度范围（ΔT80），其中第二温度范围的上限（DeltaT80）比上限低10％ 劣化前的催化剂（12）的活化开始温度（Ta）和活化终止温度（Tb）与第二温度范围（ΔT80）的下限之间的第一温度范围（DeltaT100）比下部10％ 第一个温度范围的限制（DeltaT100）。 劣化指数温度（Tic）被认为是催化剂（12）朝向高温侧的发光特性的偏移水平，并且将劣化指数温度（Tic）加到基准确定温度（T0b）之前 劣化，并且将该和作为废气升温控制的测定温度（T0）。 根据上述结构，可以在不使用高精度的NOx浓度传感器等排气成分用浓度传感器的情况下推定催化剂（12）的劣化程度，废气状态的恶化为 在最小化燃料消耗的恶化的同时被抑制。

公开(公告)号：US08109080B2

公开(公告)日：2012-02-07

申请号：US12451422

申请日：2008-04-16

申请人： Masashi Gabe ,  Daiji Nagaoka

发明人： Masashi Gabe ,  Daiji Nagaoka

IPC分类号： F01N3/00

CPC分类号： F01N3/0814 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2255/91 ,  F01N3/0807 ,  F01N3/0885 ,  F01N9/00 ,  F01N2560/02 ,  F01N2560/022 ,  F01N2560/023 ,  F01N2560/024 ,  F01N2560/025 ,  F01N2570/14 ,  F01N2900/1621 ,  Y02A50/2344 ,  Y02T10/47

摘要： In a NOx purification system 1 provided with a NOx occlusion reduction catalyst 20 and a control unit 30 which executes a NOx regeneration control and a sulfur poisoning regeneration control, a binary λ sensor 26 and a reducing agent concentration sensor 25 for detecting a concentration of the reducing agent are disposed downstream of the NOx occlusion reduction catalyst 20. The level of deterioration of the NOx occlusion reduction catalyst 20 caused by sulfur poisoning is estimated on the basis of a time period Ta from a time point T3 at which a marked decrease of oxygen concentration is detected by the binary λ sensor 26 to the time point T2 at which the marked increase of the oxygen concentration is detected by the reducing agent concentration sensor 25 under the NOx regeneration control. Accordingly, the sulfur poisoning amount is accurately estimated and by performing the sulfur poisoning regeneration at an appropriate frequency, any excessive sulfur poisoning regeneration can be avoided, thereby preventing deterioration of mileage.

摘要翻译： 在设置有NOx吸留还原催化剂20的NOx净化系统1和执行NOx再生控制和硫中毒再生控制的控制单元30中，检测二氧化碳浓度传感器26和还原剂浓度传感器25 还原剂设置在NOx吸留还原催化剂20的下游。由硫中毒引起的NOx吸留还原催化剂20的劣化水平基于来自显着降低的氧气的时间点T3的时间段Ta 浓度由二元λ传感器26检测到在NOx再生控制下通过还原剂浓度传感器25检测到氧浓度显着增加的时间点T2。 因此，能够精确地估计硫中毒量，通过以适当的频率进行硫中毒再生，可以避免任何过度的硫中毒再生，从而防止里程恶化。

公开(公告)号：US07716918B2

公开(公告)日：2010-05-18

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： F01N3/00

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 an exhaust gas purification system, including a catalyst unit carrying an NOx occlusion-reduction type catalyst, a first-stage rich control having a target air-fuel ratio lower than theoretical air-fuel ratio and which is conducted through addition of an amount of a reducing agent meeting an amount of oxygen emitted in the initial stage of regeneration control. In the first-stage rich control a completion of oxygen emission is judged on the basis of an oxygen concentration on the downstream side of the catalyst unit. Upon determination of the completion of the 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 conducted to thereby accomplish regeneration of the catalyst unit. As a result, 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： 在具有携带NOx吸留还原型催化剂的催化剂单元的排气净化系统中，具有目标空燃比低于理论空燃比的第一级富控制，并且通过添加一定量的 还原剂满足在再生控制的初始阶段发出的氧气量。 在第一级富控制中，基于催化剂单元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 单元。 结果，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，而且可以防止在再生的后期发生诸如HC和CO的原始还原剂的任何流出。

公开(公告)号：US20100115924A1

公开(公告)日：2010-05-13

申请号：US12451422

申请日：2008-04-16

申请人： Masashi Gabe ,  Daiji Nagaoka

发明人： Masashi Gabe ,  Daiji Nagaoka

IPC分类号： F01N3/20 ,  F01N11/00

CPC分类号： F01N3/0814 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2255/91 ,  F01N3/0807 ,  F01N3/0885 ,  F01N9/00 ,  F01N2560/02 ,  F01N2560/022 ,  F01N2560/023 ,  F01N2560/024 ,  F01N2560/025 ,  F01N2570/14 ,  F01N2900/1621 ,  Y02A50/2344 ,  Y02T10/47

摘要： In a NOx purification system 1 provided with a NOx occlusion reduction catalyst 20 and a control unit 30 which executes a NOx regeneration control and a sulfur poisoning regeneration control, a binary λ sensor 26 and a reducing agent concentration sensor 25 for detecting a concentration of the reducing agent are disposed downstream of the NOx occlusion reduction catalyst 20. The level of deterioration of the NOx occlusion reduction catalyst 20 caused by sulfur poisoning is estimated on the basis of a time period Ta from a time point T3 at which a marked decrease of oxygen concentration is detected by the binary λ sensor 26 to the time point T2 at which the marked increase of the oxygen concentration is detected by the reducing agent concentration sensor 25 under the NOx regeneration control. Accordingly, the sulfur poisoning amount is accurately estimated and by performing the sulfur poisoning regeneration at an appropriate frequency, any excessive sulfur poisoning regeneration can be avoided, thereby preventing deterioration of mileage.

摘要翻译： 在设置有NOx吸留还原催化剂20的NOx净化系统1和执行NOx再生控制和硫中毒再生控制的控制单元30中，检测二氧化碳浓度传感器26和还原剂浓度传感器25 还原剂设置在NOx吸留还原催化剂20的下游。由硫中毒引起的NOx吸留还原催化剂20的劣化水平基于来自显着降低的氧气的时间点T3的时间段Ta 浓度由二元λ传感器26检测到在NOx再生控制下通过还原剂浓度传感器25检测到氧浓度显着增加的时间点T2。 因此，能够精确地估计硫中毒量，通过以适当的频率进行硫中毒再生，可以避免任何过度的硫中毒再生，从而防止里程恶化。

公开(公告)号：US20100101218A1

公开(公告)日：2010-04-29

申请号：US12452138

申请日：2008-05-12

申请人： Masashi Gabe ,  Daiji Nagaoka

发明人： Masashi Gabe ,  Daiji Nagaoka

IPC分类号： F01N9/00 ,  F01N3/10

CPC分类号： F01N3/2066 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D53/9495 ,  B01D2251/2062 ,  F01N13/009 ,  F01N13/0093 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/03 ,  F02D41/025 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/405 ,  F02D2250/36 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/26

摘要： In an NOx purification system and a method for control of the NOx purification system, two oxidation catalysts are provided upstream of an ammonia solution supply unit, and the in-cylinder fuel injection is so controlled that hydrocarbon in exhaust gas is mainly oxidized by the upstream oxidation catalyst and nitric oxide in the exhaust gas is mainly oxidized by the downstream oxidation catalyst. In the purification of NOx in the exhaust gas by feeding an ammonia solution for NOx reduction to a selective reduction NOx catalyst, this technique enables the system to adjust the concentrations of HC, NO and NO2 in the exhaust gas flowing into the selective reduction NOx catalyst to proper values so as to purify the NOx efficiently by the selective reduction NOx catalyst. The NOx purification performance in a lower temperature range can be thus improved.

摘要翻译： 在NOx净化系统和NOx净化系统的控制方法中，在氨溶液供给单元的上游设置有两个氧化催化剂，并且控制缸内燃料喷射，使排气中的烃主要被上游侧氧化 废气中的氧化催化剂和一氧化氮主要被下游氧化催化剂氧化。 在通过将NOx还原用氨溶液供给到选择还原型NOx催化剂中来净化废气中的NOx的情况下，能够使系统调节流入选择还原型NOx催化剂的废气中的HC，NO，NO2的浓度 以适当的值，以便通过选择还原NOx催化剂有效地净化NOx。 可以提高在较低温度范围内的NOx净化性能。

公开(公告)号：US20090077947A1

公开(公告)日：2009-03-26

申请号：US11667242

申请日：2005-11-10

申请人： Daiji Nagaoka ,  Masashi Gabe

发明人： Daiji Nagaoka ,  Masashi Gabe

IPC分类号： F01N9/00

CPC分类号： F01N3/0885 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  F01N2250/12 ,  F01N2570/04 ,  F01N2610/03

摘要： In an exhaust gas purifying system (1) which is equipped with a NOx occlusion reduction type catalyst (11) and an oxidation catalyst (12) set on the upstream side of the catalyst (11) and in which sulfur purge control for regenerating the sulfur-poisoned catalyst (11) is conducted, in conducting the sulfur purge control, the air fuel ratio control for sulfur purge is conducted after the temperature difference (ΔTIO) between the inlet side and outlet side of the catalyst (11) has been reduced to a prescribed level (ΔT0) or below by raising the exhaust temperature. According to the invention, the sulfur poison on the catalyst (11) can be uniformly removed in the sulfur-purge regeneration control, whereby the service life of the catalyst (11) can be protected from being shortened by sulfur poisoning. Further, the catalyst (11) can be protected from the thermal deterioration caused by partial temperature rise inside the catalyst (11) on its downstream side, so that the service life of the catalyst (11) can be protected from being shortened by thermal deterioration.

摘要翻译： 在设置有NOx吸留还原型催化剂（11）的废气净化系统（1）和设置在催化剂（11）的上游侧的氧化催化剂（12），其中硫的净化控制用于再生硫 在进行硫清除控制时，在催化剂（11）的入口侧和出口侧的温差（DeltaTIO）已经减小到 通过提高排气温度达到规定水平（DeltaT0）或更低。 根据本发明，可以在硫清除再生控制中均匀地除去催化剂（11）上的硫毒物，从而可以防止催化剂（11）的使用寿命被硫中毒所缩短。 此外，可以保护催化剂（11）免受其下游侧的催化剂（11）内的部分升温引起的热劣化，从而可以防止催化剂（11）的使用寿命因热劣化而缩短 。

公开(公告)号：US07451593B2

公开(公告)日：2008-11-18

申请号：US10554931

申请日：2004-06-22

申请人： Daiji Nagaoka ,  Masashi Gabe ,  Takayuki Sakamoto

发明人： Daiji Nagaoka ,  Masashi Gabe ,  Takayuki Sakamoto

IPC分类号： F01N3/00

CPC分类号： B01D53/9495 ,  B01D53/9431 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N13/0097 ,  F02B29/0425 ,  F02B37/00 ,  F02D41/0275 ,  F02D41/029 ,  F02D41/1446 ,  F02D2200/0812 ,  F02M26/05 ,  F02M26/23 ,  F02M26/47

摘要： An exhaust gas cleaning method capable of maintaining an optimum NOx purification ratio in the continuously regenerative range of DPF in an exhaust gas cleaning system (1) having an NOx purification function and a PM purification function combined with each other and the exhaust gas cleaning system (1). In the exhaust gas cleaning system (1), NOx purification by an NOx occlusion/reduction type catalyst (42) and PM purification by a continuous regeneration type DPF (41) are preformed for exhaust gas from an internal combustion engine. When the temperature (Tent) of the exhaust gas flowing in the DPF (41b) exceeds the self-burning temperature (Tent0) of PM and the differential pressure increasing rate (dP) of a differential pressure across the DPF (41b) exceeds a specified determination value (dP0), at least either of a control to reduce the frequency of enriching the exhaust gas and a control to reduce the degree of richness is performed in a catalyst regenerative control for regenerating the NOx occlusion/reduction type catalyst (42).

摘要翻译： 一种废气净化方法，其能够在具有NOx净化功能和PM净化功能的废气净化系统（1）中将DPF的连续再生范围内的NOx净化率保持在最佳状态，并且将废气净化系统 1）。 在排气净化系统（1）中，通过NOx吸留还原型催化剂（42）进行NOx净化，通过连续再生型DPF（41）进行PM净化，从内燃机排出气体。 当在DPF（41b）中流动的废气的温度（Tent）超过PM的自燃温度（Tent 0）和DPF（41b）两端的压差的压差增加率（dP）时， 超过规定的判定值（dP 0）时，在用于再生NOx吸留还原型催化剂的催化剂再生控制中进行至少任一个降低浓缩排气的频率的控制和降低浓度的控制 （42）。

公开(公告)号：US20070022742A1

公开(公告)日：2007-02-01

申请号：US10554931

申请日：2004-06-22

申请人： Daiji Nagaoka ,  Masashi Gabe ,  Takayuki Sakamoto

发明人： Daiji Nagaoka ,  Masashi Gabe ,  Takayuki Sakamoto

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： B01D53/9495 ,  B01D53/9431 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0842 ,  F01N13/0097 ,  F02B29/0425 ,  F02B37/00 ,  F02D41/0275 ,  F02D41/029 ,  F02D41/1446 ,  F02D2200/0812 ,  F02M26/05 ,  F02M26/23 ,  F02M26/47

摘要： An exhaust gas cleaning method capable of maintaining an optimum NOx purification ratio in the continuously regenerative range of DPF in an exhaust gas cleaning system (1) having an NOx purification function and a PM purification function combined with each other and the exhaust gas cleaning system (1). In the exhaust gas cleaning system (1), NOx purification by an NOx occlusion/reduction type catalyst (42) and PM purification by a continuous regeneration type DPF (41) are preformed for exhaust gas from an internal combustion engine. When the temperature (Tent) of the exhaust gas flowing in the DPF (41b) exceeds the self-burning temperature (Tent0) of PM and the differential pressure increasing rate (dP) of a differential pressure across the DPF (41b) exceeds a specified determination value (dP0), at least either of a control to reduce the frequency of enriching the exhaust gas and a control to reduce the degree of richness is performed in a catalyst regenerative control for regenerating the NOx occlusion/reduction type catalyst (42).

摘要翻译： 一种废气净化方法，其能够在具有NOx净化功能和PM净化功能的废气净化系统（1）中将DPF的连续再生范围内的NOx净化率保持在最佳状态，并且将废气净化系统 1）。 在排气净化系统（1）中，通过NOx吸留还原型催化剂（42）进行NOx净化，通过连续再生型DPF（41）进行PM净化，从内燃机排出气体。 当在DPF（41b）中流动的废气的温度（Tent）超过PM的自燃温度（Tent 0）和DPF（41b）两端的压差的压差增加率（dP）时， 超过规定的判定值（dP 0）时，在用于再生NOx吸留还原型催化剂的催化剂再生控制中进行至少任一个降低浓缩排气的频率的控制和降低浓度的控制 （42）。

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。