公开(公告)号：US08117829B2

公开(公告)日：2012-02-21

申请号：US11942039

申请日：2007-11-19

申请人： Tomoko Morita ,  Norio Suzuki ,  Takashi Konomoto

发明人： Tomoko Morita ,  Norio Suzuki ,  Takashi Konomoto

IPC分类号： F01N3/00

CPC分类号： B01D53/9495 ,  B01D53/9409 ,  F01N3/0871 ,  F01N3/206 ,  F01N9/00 ,  F01N11/00 ,  F01N13/009 ,  F01N2550/02 ,  F02B37/00 ,  F02D41/0275 ,  F02D2200/0811 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine which is capable of supplying a just enough amount of reducing agent to a NOx catalyst while causing the consumption amount of reducing agent dependent on the degradation degree of an upstream catalyst to be reflected thereon. A NOx catalyst is disposed at a location downstream of a catalyst having an oxidation function for purifying exhaust gases, for trapping NOx contained in exhaust gases in an oxidizing atmosphere, and reducing the trapped NOx in a reducing atmosphere to thereby purify the trapped NOx. Exhaust gases flowing into the NOx catalyst are controlled to the reducing atmosphere, by supplying reducing agent to an upstream side of the catalyst. The degradation degree of the catalyst is estimated, and a time period over which the reduction control should be executed is corrected according to the estimated degradation degree.

摘要翻译： 一种用于内燃机的废气排放控制装置，其能够将足够量的还原剂供应到NOx催化剂，同时使依赖于上游催化剂的劣化程度的还原剂的消耗量被反射。 NOx催化剂设置在具有用于净化废气的氧化功能的催化剂下游的位置处，用于捕集在氧化气氛中的废气中所含的NOx，并且还原被还原的NOx，从而净化被捕获的NOx。 通过向催化剂的上游侧供给还原剂，流入NOx催化剂的废气被控制在还原气氛中。 估计催化剂的降解程度，并且根据估计的降解程度来校正应执行减少控制的时间段。

公开(公告)号：US08033097B2

公开(公告)日：2011-10-11

申请号：US12002209

申请日：2007-12-14

申请人： Katsuji Wada ,  Norio Suzuki ,  Tomoko Morita

发明人： Katsuji Wada ,  Norio Suzuki ,  Tomoko Morita

IPC分类号： F01N3/00 ,  F01N3/10

CPC分类号： F01N9/00 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/101 ,  F01N13/009 ,  F01N13/0097 ,  F01N2250/02 ,  F01N2430/06 ,  F01N2430/085 ,  F02B31/06 ,  F02B37/00 ,  F02B2275/14 ,  F02D41/0275 ,  F02D41/2454 ,  F02D41/402 ,  F02M26/05 ,  F02M26/25 ,  Y02T10/123 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/44 ,  Y02T10/47

摘要： An exhaust control device for an internal combustion engine, comprises: a NOx purifying catalyst disposed in an exhaust system; and a rich control means for calculating a fuel injection amount based on a difference between a target exhaust air fuel ratio and an actual exhaust air fuel ratio to feedback-control the actual exhaust air fuel ratio so that a reducing atmosphere is created in the exhaust system to thereby reduce NOx trapped by the NOx purifying catalyst, wherein the rich control means includes a learning means for calculating and updating a control correction value of the fuel injection amount based on an actual control value of the fuel injection amount during the feedback control, and wherein the fuel injection amount is calculated during the feedback control by using the control correction value.

摘要翻译： 一种用于内燃机的排气控制装置，包括：排气系统中的NOx净化催化剂; 以及丰富的控制装置，用于基于目标排气空燃比和实际排气量之间的差来计算燃料喷射量，以反馈控制实际排气空燃比，从而在排气系统中产生还原气氛 从而减少由NOx净化催化剂捕获的NOx，其中富控制装置包括用于基于反馈控制期间的燃料喷射量的实际控制值来计算和更新燃料喷射量的控制校正值的学习装置，以及 其中通过使用控制校正值在反馈控制期间计算燃料喷射量。

公开(公告)号：US07997068B2

公开(公告)日：2011-08-16

申请号：US12044582

申请日：2008-03-07

申请人： Tomoko Morita ,  Norio Suzuki ,  Hiroshi Ohno

发明人： Tomoko Morita ,  Norio Suzuki ,  Hiroshi Ohno

IPC分类号： F01N3/00

CPC分类号： F02D41/028 ,  F01N3/035 ,  F01N3/0885 ,  F01N13/009 ,  F01N13/0097 ,  F01N2560/025 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2560/14 ,  F02D41/0275 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/1445 ,  F02D2200/0806 ,  F02D2200/0818 ,  Y02T10/20

摘要： In a control device for an internal combustion engine provided with a NOx catalytic converter in an exhaust passage thereof, the progress of an undesired substance removal process is computed from the consumption of the reducing agent contained in the exhaust gas in the NOx catalytic converter. The undesired substance may include sulfur contents and NOx captured in the NOx catalytic converter. This computation may be based on the air fuel ratio of the exhaust gas upstream of the NOx catalytic converter and the estimated consumption of the reducing agent contained in the exhaust gas or on the difference between the air fuel ratios of the exhaust gas upstream and downstream of the NOx catalytic converter. In either case, the accuracy can be improved by taking into account the space velocity of the exhaust gas.

摘要翻译： 在用于其排气通道中具有NOx催化转化器的内燃机的控制装置中，根据NOx催化转化器中的排气中所含的还原剂的消耗量计算出不需要的物质去除过程的进展。 不期望的物质可以包括在NOx催化转化器中捕获的硫含量和NOx。 该计算可以基于NOx催化转化器上游的废气的空燃比和废气中包含的还原剂的估计消耗量，或者废气上游和下游的排气的空燃比 NOx催化转化器。 在这两种情况下，通过考虑废气的空间速度可以提高精度。

公开(公告)号：US07997067B2

公开(公告)日：2011-08-16

申请号：US11979161

申请日：2007-10-31

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： F01N3/00

CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N9/005 ,  F01N11/002 ,  F01N11/007 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/06 ,  F02B37/00 ,  F02D41/025 ,  F02D41/0275 ,  F02D41/1465 ,  F02D2200/0811 ,  Y02T10/144 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of accurately estimating the amount of NOx trapped by a NOx catalyst even when a catalyst is provided on an upstream side of the NOx catalyst. A catalyst having the function of purifying NOx and a NOx catalyst for trapping NOx under an oxidizing atmosphere are disposed in an exhaust system. The amount of NOx contained in exhaust gases is estimated. A NOx purification performance of the catalyst is calculated. The NOx emission amount is corrected based on the purification performance. An amount of NOx trapped in the NOx catalyst is calculated based on the corrected NOx emission amount. A reducing agent is supplied to an upstream side of the catalyst based on the trapped NOx amount, thereby causing the NOx catalyst to carry out a NOx reducing operation.

摘要翻译： 一种用于内燃机的废气排放控制装置，即使在NOx催化剂的上游侧设置催化剂，也能够精确地估计NOx催化剂捕获的NOx的量。 具有净化NOx功能的催化剂和用于在氧化气氛下捕获NOx的NOx催化剂设置在排气系统中。 估计废气中所含的NOx的量。 计算催化剂的NOx净化性能。 基于净化性能来校正NOx排放量。 基于校正的NOx排放量计算捕获在NOx催化剂中的NOx的量。 基于被捕获的NOx量将还原剂供给到催化剂的上游侧，从而使NOx催化剂进行NOx还原操作。

公开(公告)号：US20080131346A1

公开(公告)日：2008-06-05

申请号：US11984743

申请日：2007-11-21

申请人： Tomoko Morita ,  Norio Suzuki ,  Hiroshi Ohno

发明人： Tomoko Morita ,  Norio Suzuki ,  Hiroshi Ohno

IPC分类号： B01D53/56 ,  F01N3/18 ,  F01N11/00

CPC分类号： B01D53/9495 ,  B01D53/9409 ,  B01D2251/20 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0871 ,  F01N3/106 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1621 ,  F01N2900/1622 ,  F02B37/00 ,  F02D41/0275 ,  F02D41/1462 ,  F02D2200/0806 ,  Y02C20/10 ,  Y10S423/05

摘要： An exhaust emission control device for an internal combustion engine, which is capable of supplying a just enough amount of reducing agent to a NOx catalyst, thereby reducing exhaust emission and improving fuel economy. The device includes a three-way catalyst, a NOx catalyst provided downstream of the three-way catalyst, and an ECU. The ECU carries out rich spike control such that exhaust gases flowing into the NOx catalyst form a reducing atmosphere. During the control, the ECU calculates a reducing agent consumption amount of reducing agent in the exhaust gases consumed by the three-way catalyst, calculates a cumulative reducing agent amount as a total amount of reducing agent supplied to the NOx catalyst, depending on the reducing agent consumption amount, and terminates the control when the cumulative reducing agent amount becomes larger than a predetermined value.

摘要翻译： 一种用于内燃机的废气排放控制装置，其能够将足够量的还原剂供应到NOx催化剂，从而减少废气排放并提高燃料经济性。 该装置包括三元催化剂，设置在三元催化剂下游的NOx催化剂和ECU。 ECU执行丰富的尖峰控制，使得流入NOx催化剂的废气形成还原气氛。 在控制期间，ECU计算由三元催化剂消耗的废气中的还原剂的还原剂消耗量，根据还原剂计算作为向NOx催化剂供给的还原剂的总量的累积还原剂量 代理消耗量，并且当累积减少剂量变得大于预定值时终止控制。

公开(公告)号：US20080120963A1

公开(公告)日：2008-05-29

申请号：US11979169

申请日：2007-10-31

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： F01N3/20

CPC分类号： F01N3/0871 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/005 ,  F01N11/002 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/14 ,  F02B29/0437 ,  F02B31/06 ,  F02B37/22 ,  F02D41/0275 ,  F02M26/05 ,  F02M2026/009 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of supplying a just enough amount of reducing agent to the NOx catalyst even when a catalyst is provided on an upstream side of the NOx catalyst. A catalyst and a NOx catalyst are disposed at respective upstream and downstream locations in an exhaust system, for purifying NOx and for trapping NOx under an oxidizing atmosphere and reducing the NOx under a reducing atmosphere, respectively. An air-fuel sensor is disposed between the catalyst and the NOx catalyst. A reducing agent is supplied to an upstream side of the catalyst, to control exhaust gases such that the gases form the reducing atmosphere. To determine time of termination of NOx reduction control, an amount of reducing agent supplied to the NOx catalyst is calculated, and calculation of the amount of reducing agent is started when the air-fuel ratio has converged within a vicinity of a target air-fuel ratio.

摘要翻译： 即使在NOx催化剂的上游侧设置有催化剂，也能够向NOx催化剂供给足够量的还原剂的内燃机废气排放控制装置。 催化剂和NOx催化剂设置在排气系统中的各个上游和下游位置，用于净化NOx并在氧化气氛下捕获NOx，并在还原气氛下还原NOx。 在催化剂和NOx催化剂之间设置有空气 - 燃料传感器。 将还原剂供给到催化剂的上游侧，以控制废气，使得气体形成还原气氛。 为了确定NOx还原控制的终止时间，计算供给到NOx催化剂的还原剂的量，并且当空燃比收敛在目标空气燃料附近时开始还原剂的量的计算 比。

公开(公告)号：US20070003455A1

公开(公告)日：2007-01-04

申请号：US10564780

申请日：2005-03-09

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada ,  Hiroshi Ohno ,  Naohiro Satoh

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada ,  Hiroshi Ohno ,  Naohiro Satoh

IPC分类号： B01D50/00 ,  F01N3/10

CPC分类号： F01N3/0842 ,  B01D53/9431 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2251/2062 ,  F01N3/206 ,  F01N3/2882 ,  F01N2610/04 ,  Y02T10/22

摘要： A NOx removing device 4 having NOx absorbing capacity and ammonia retaining capacity is provided in an exhaust pipe 2 of an internal combustion engine 1. A reforming catalyst 3 is disposed upstream of the NOx removing device 4. The reforming catalyst 3 generates hydrogen and carbon monoxide by the steam reforming reaction, when the exhaust gases are in the reducing state. Hydrogen and carbon monoxide generated by the reforming catalyst 3 are supplied to the NOx removing device 4, and contribute to generation of ammonia. The generated ammonia is retained in the NOx removing device 4 and reduces NOx in exhaust gases when the exhaust gases are in the oxidizing state.

摘要翻译： 在内燃机1的排气管2中设置具有NOx吸收能力和氨保持能力的NOx去除装置4。 重整催化剂3设置在NOx去除装置4的上游。 当废气处于还原状态时，重整催化剂3通过蒸汽重整反应产生氢气和一氧化碳。 由重整催化剂3产生的氢和一氧化碳被供给至NOx除去装置4，有助于氨的产生。 所产生的氨被保留在NOx去除装置4中，并且当废气处于氧化状态时减少废气中的NOx。

公开(公告)号：US20080178578A1

公开(公告)日：2008-07-31

申请号：US11979238

申请日：2007-10-31

申请人： Katsuji Wada ,  Norio Suzuki ,  Naohiro Sato ,  Tomoko Morita ,  Hiroshi Ohno

发明人： Katsuji Wada ,  Norio Suzuki ,  Naohiro Sato ,  Tomoko Morita ,  Hiroshi Ohno

IPC分类号： F01N3/10 ,  F01N9/00

CPC分类号： F01N3/0871 ,  F01N2570/14 ,  Y02A50/2344 ,  Y02T10/20

摘要： An emission gas purification system is provided capable of making EM clearer and further improving NOx purification capacity. An emission gas purification system 1 is provided for an exhaust system of an engine 3, and includes a purification unit 16 having a catalyst for purifying NOx according to an air-fuel ratio of an emission gas, and an air-fuel ratio control unit 2 adjusting the air-fuel ratio of the emission gas supplied to the purification unit 16. The air-fuel ratio control unit 2 purifies the emission gas by setting the emission gas A/F to be near stoichiometric or rich by reducing an intake air mass in an air-fuel mixture.

摘要翻译： 提供能够使EM更清洁并进一步提高NOx净化能力的排放气体净化系统。 另外，在发动机3的排气系统中设置有排气净化系统1，具有根据排放气体的空燃比来净化NOx的催化剂的净化单元16和空燃比控制单元2 调整供给到净化单元16的排出气体的空燃比。 空燃比控制单元2通过减少空气 - 燃料混合物中的进气体质量，将排放气体A / F设定为接近化学计量或浓度来净化排放气体。

公开(公告)号：US20050178109A1

公开(公告)日：2005-08-18

申请号：US11046817

申请日：2005-02-01

申请人： Katsuji Wada ,  Hiroshi Ohno ,  Norio Suzuki ,  Tomoko Morita

发明人： Katsuji Wada ,  Hiroshi Ohno ,  Norio Suzuki ,  Tomoko Morita

IPC分类号： F01N3/24 ,  B01D53/94 ,  F01N3/08 ,  F01N3/20 ,  F01N9/00 ,  F02B37/00 ,  F02D41/02 ,  F02D41/04 ,  F02M25/07 ,  F01N3/00 ,  F01N3/10

CPC分类号： F01N3/208 ,  F01N3/2073 ,  F01N9/005 ,  F01N2240/25 ,  F01N2250/12 ,  F01N2370/04 ,  F01N2430/06 ,  F01N2570/00 ,  F01N2570/14 ,  F01N2570/18 ,  F01N2610/03 ,  F01N2900/08 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1622 ,  F02B31/085 ,  F02B37/00 ,  F02D41/0235 ,  F02M26/05 ,  F02M26/20 ,  F02M26/48 ,  Y02A50/2325 ,  Y02A50/2344 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust gas purifying apparatus for an internal combustion engine having an exhaust system. The apparatus includes a NOx purifying device provided in the exhaust system. This device removes NOx from exhaust gases when a concentration of oxygen in the exhaust gases is higher than a concentration of reducing components in the exhaust gases; generates ammonia and retains the generated ammonia when the concentration of reducing components in the inflowing exhaust gases is higher than the concentration of oxygen; and purifies NOx with the retained ammonia when the concentration of reducing components in the inflowing exhaust gases is lower than the concentration of oxygen. A residual amount of ammonia retained in the NOx purifying device is estimated. The concentration of reducing components in the exhaust gases is switched with respect to the concentration of oxygen according to the estimated residual amount.

摘要翻译： 一种具有排气系统的内燃机的废气净化装置。 该设备包括设置在排气系统中的NOx净化装置。 当废气中的氧浓度高于废气中还原成分的浓度时，该装置从废气中除去NOx; 当流入的废气中的还原成分的浓度高于氧浓度时，产生氨并保留产生的氨; 并且当流入的废气中的还原成分的浓度低于氧浓度时，用残留的氨净化NOx。 估计残留在NOx净化装置中的氨的残留量。 根据估计的剩余量，排气中的还原成分的浓度相对于氧浓度而切换。

公开(公告)号：US08141349B2

公开(公告)日：2012-03-27

申请号：US11979169

申请日：2007-10-31

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： F01N3/00

CPC分类号： F01N3/0871 ,  F01N3/0814 ,  F01N3/0842 ,  F01N9/005 ,  F01N11/002 ,  F01N13/009 ,  F01N2560/025 ,  F01N2560/14 ,  F02B29/0437 ,  F02B31/06 ,  F02B37/22 ,  F02D41/0275 ,  F02M26/05 ,  F02M2026/009 ,  Y02T10/24 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine, which is capable of supplying a just enough amount of reducing agent to the NOx catalyst even when a catalyst is provided on an upstream side of the NOx catalyst. A catalyst and a NOx catalyst are disposed at respective upstream and downstream locations in an exhaust system, for purifying NOx and for trapping NOx under an oxidizing atmosphere and reducing the NOx under a reducing atmosphere, respectively. An air-fuel sensor is disposed between the catalyst and the NOx catalyst. A reducing agent is supplied to an upstream side of the catalyst, to control exhaust gases such that the gases form the reducing atmosphere. To determine time of termination of NOx reduction control, an amount of reducing agent supplied to the NOx catalyst is calculated, and calculation of the amount of reducing agent is started when the air-fuel ratio has converged within a vicinity of a target air-fuel ratio.

摘要翻译： 即使在NOx催化剂的上游侧设置有催化剂，也能够向NOx催化剂供给足够量的还原剂的内燃机废气排放控制装置。 催化剂和NOx催化剂设置在排气系统中的各个上游和下游位置，用于净化NOx并在氧化气氛下捕获NOx，并在还原气氛下还原NOx。 在催化剂和NOx催化剂之间设置有空气 - 燃料传感器。 将还原剂供给到催化剂的上游侧，以控制废气，使得气体形成还原气氛。 为了确定NOx还原控制的终止时间，计算供给到NOx催化剂的还原剂的量，并且当空燃比收敛在目标空气燃料附近时开始还原剂的量的计算 比。