公开(公告)号：US07993582B2

公开(公告)日：2011-08-09

申请号：US11882406

申请日：2007-08-01

申请人： Hisao Haga ,  Norio Suzuki ,  Katsuji Wada

发明人： Hisao Haga ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： G01N21/00 ,  F01N1/00 ,  G01M15/00 ,  G01N7/00

CPC分类号： F02D41/0285 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/0885 ,  F01N2560/025 ,  F01N2560/06 ,  F02B37/00 ,  F02D41/0047 ,  F02D41/405 ,  F02D2200/0802 ,  Y02T10/44

摘要： Provided is a control device for an internal combustion engine that can execute a sulfur purge in a favorable manner under all conditions without complicating the control action or the engine structure. The process comprises detecting a temperature of the NOx catalytic converter, detecting an exhaust air fuel ratio in the catalytic converter, computing a target exhaust air fuel ratio according to a detected temperature of the NOx catalytic converter, and controlling a fuel injection valve so as to make an actual exhaust fuel ratio agree with the target exhaust air fuel ratio. If the temperature of the NOx catalytic converter is not high enough to enable a sulfur purge, a temperature increase control is executed to increase the temperature of the NOx catalytic converter by suitably changing various engine parameters.

摘要翻译： 提供一种用于内燃机的控制装置，其可以在所有条件下以良好的方式执行硫吹扫，而不会使控制动作或发动机结构复杂化。 该方法包括检测NOx催化转化器的温度，检测催化转化器中的排气空燃比，根据NOx催化转化器的检测温度计算目标排气空燃比，并控制燃料喷射阀，以便 使实际的排气燃料比与目标排气空燃比一致。 如果NOx催化转化器的温度不足以实现硫吹扫，则通过适当地改变各种发动机参数来执行升温控制以增加NOx催化转化器的温度。

公开(公告)号：US20080148712A1

公开(公告)日：2008-06-26

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： F01N3/10 ,  F01N9/00

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：US20110289918A1

公开(公告)日：2011-12-01

申请号：US13148035

申请日：2010-02-05

申请人： Katsuji Wada

发明人： Katsuji Wada

IPC分类号： F02M25/07 ,  F02B37/00

CPC分类号： F02D41/0065 ,  F02D9/02 ,  F02D41/0055 ,  F02D41/0275 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  Y02T10/47

摘要： An exhaust emission control device for an internal combustion engine is provided that can suppress the adherence of HC to an EGR path and the like accompanying enrichment of the exhaust air/fuel ratio. The exhaust emission control device includes: a high-pressure EGR path 6 that recirculates a portion of the exhaust gas upstream of a turbine 81 into an intake manifold 3; a high-pressure EGR control portion 43; a low-pressure EGR path 10 that recirculates a portion of the exhaust gas downstream of the turbine 81 into intake plumbing 2; a low-pressure EGR control portion 44; a NOx purification catalyst 31 that is provided inside exhaust plumbing 4 downstream of an exhaust inlet of the low-pressure EGR path 10, traps NOx under an oxidizing atmosphere, and purifies the trapped NOx under a reducing atmosphere; a NOx purification catalyst reduction control unit 41 that performs reduction control of the exhaust air/fuel ratio; and an EGR switching portion 45 that selects recirculation control of exhaust gas by the low-pressure EGR control portion 44 in a case of the exhaust air/fuel ratio being at least a predetermined threshold value, and selects recirculation control of exhaust gas by the high-pressure EGR control portion 43 in a case of being lower than the threshold value.

摘要翻译： 本发明提供一种内燃机的废气排放控制装置，能够抑制HC与排气/燃料比的浓缩等对EGR路径等的附着。 废气排放控制装置包括：将涡轮机81上游的排气的一部分再循环到进气歧管3的高压EGR通路6; 高压EGR控制部43; 将涡轮机81下游的废气的一部分再循环到进气管道2中的低压EGR通道10; 低压EGR控制部44; 设置在低压EGR通路10的排气入口下游的排气管道4内的NOx净化催化剂31，在氧化气氛下捕集NOx，并在还原气氛下净化被捕获的NOx; 执行排气/燃料比的减少控制的NOx净化催化剂减少控制单元41; 以及在排气/燃料比至少为预定阈值的情况下选择低压EGR控制部44的排气的再循环控制的EGR切换部45，并且选择排气的再循环控制高 在低于阈值的情况下，压缩EGR控制部43。

公开(公告)号：US20110289917A1

公开(公告)日：2011-12-01

申请号：US13147793

申请日：2010-02-05

申请人： Katsuji Wada

发明人： Katsuji Wada

IPC分类号： F01N3/023 ,  F02B37/00

CPC分类号： F02D41/0055 ,  B01D46/0061 ,  B01D46/448 ,  B01D46/46 ,  B01D2279/30 ,  F02D21/08 ,  F02D41/025 ,  F02D41/029 ,  F02D41/1446 ,  F02D41/405 ,  F02D2200/0802 ,  F02M26/05 ,  F02M26/06 ,  F02M26/15 ,  F02M26/38 ,  F02M26/47 ,  Y02T10/26 ,  Y02T10/47

摘要： An exhaust purifying device for an internal combustion engine is provided that can regenerate an exhaust purifying filter at high efficiency without deteriorating the fuel economy. An exhaust purifying device of an engine (1) includes: a turbocharger (8); DPF (32); oxidation catalyst (31); high-pressure EGR path (6) that recirculates a portion of exhaust gas upstream of a turbine (81) into intake plumbing (2); a high-pressure EGR valve (11) and high-pressure EGR control portion (43) that control a flow rate of exhaust gas being recirculated via the high-pressure EGR path (6); a low-pressure EGR path (10) that recirculates a portion of exhaust gas downstream of the DPF (32) into the intake plumbing (2); a low-pressure EGR valve (12) and low-pressure EGR control portion (44) that control a flow rate of exhaust gas being recirculated via the low-pressure EGR path (10); exhaust gas temperature sensor (22) that detects the temperature of exhaust gas; and an EGR switching portion (45) that selects between recirculation control of exhaust gas by way of the high-pressure EGR control portion (43) and recirculation control of exhaust gas by way of the low-pressure EGR control portion (44) in accordance with the detected value of the exhaust gas temperature sensor, in a case of having determined to be a time at which to cause PM collected in the DPF to combust.

摘要翻译： 提供一种内燃机的排气净化装置，能够高效率地再生排气净化过滤器，而不会降低燃油经济性。 发动机（1）的排气净化装置包括：涡轮增压器（8）; DPF（32）; 氧化催化剂（31）; 高压EGR路径（6），其将涡轮机（81）上游的废气的一部分再循环到进气管道（2）中; 控制经由高压EGR通路（6）再循环的废气流量的高压EGR阀（11）和高压EGR控制部（43）。 低压EGR路径（10），其将所述DPF（32）下游的废气的一部分再循环到所述进气管道（2）中; 控制经由低压EGR通路（10）再循环的废气流量的低压EGR阀（12）和低压EGR控制部（44）。 废气温度传感器（22），其检测废气的温度; 以及EGR切换部（45），其通过高压EGR控制部（43）进行排气再循环控制，并且通过低压EGR控制部（44）依次排出废气的再循环控制 在确定为使DPF中收集的PM燃烧的时间的情况下，排气温度传感器的检测值。

公开(公告)号：US20100287917A1

公开(公告)日：2010-11-18

申请号：US12811456

申请日：2008-11-05

申请人： Katsuji Wada ,  Shinya Ishimaru ,  Jun Iwamoto

发明人： Katsuji Wada ,  Shinya Ishimaru ,  Jun Iwamoto

IPC分类号： F01N3/20

CPC分类号： F01N3/0871 ,  B01D53/9409 ,  B01D53/9495 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2255/1021 ,  B01D2255/206 ,  B01D2255/20738 ,  B01D2255/2092 ,  B01D2255/502 ,  B01D2255/9022 ,  B01D2255/908 ,  B01D2258/012 ,  B01D2258/014 ,  B01J23/002 ,  B01J23/63 ,  B01J29/072 ,  B01J29/7215 ,  B01J37/0225 ,  B01J37/0244 ,  B01J37/0246 ,  B01J2523/00 ,  C01B3/386 ,  C01B2203/0261 ,  C01B2203/1041 ,  C01B2203/1064 ,  C01B2203/84 ,  F01N3/0842 ,  F01N2240/30 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2610/03 ,  F01N2610/05 ,  F01N2610/08 ,  F01N2900/0422 ,  F01N2900/08 ,  F01N2900/1602 ,  F01N2900/1614 ,  F02D41/0275 ,  F02D41/1446 ,  F02D41/1456 ,  F02D41/187 ,  F02D41/405 ,  Y02P20/52 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/3718

摘要： An exhaust purification device for an internal combustion engine can achieve high NOx purifying performance independent of operating conditions of the engine. The exhaust purification device has a NOx purification catalyst (33) mounted in an exhaust pipe (4) of the internal combustion engine, adsorbing or occluding NOx in exhaust gas when the exhaust gas air/fuel ratio is made lean, and reducing the adsorbed or occluded NOx when the exhaust gas air/fuel ratio is made rich; a fuel reformer (50) mounted separately from the exhaust pipe (4), reforming fuel to produce a reducing gas containing hydrogen and carbon monoxide, and supplying the reducing gas into that part of the exhaust pipe (4) which is located upstream of the NOx purification catalyst (33); and enriching means for enriching the exhaust gas air/fuel ratio. When one or more of operating conditions are satisfied, the enriching means enriches the air/fuel ratio of mixed gas to be combusted in the engine and causes the fuel reformer (50) to supply the reducing gas into the exhaust pipe (4) to enrich the exhaust gas air/fuel ratio.

摘要翻译： 用于内燃机的排气净化装置可以独立于发动机的操作条件实现高NOx净化性能。 排气净化装置具有安装在内燃机的排气管（4）中的NOx净化催化剂（33），当废气空燃比变稀时吸附或吸入废气中的NOx，并且减少吸附或 当排气空燃比变浓时，吸入NOx; 与排气管（4）分开安装的燃料重整器（50），重整燃料以产生含有氢和一氧化碳的还原气体，并且将还原气体供应到排放管（4）的位于 NOx净化催化剂（33）; 以及用于富集排气空气/燃料比的富集装置。 当满足一个或多个操作条件时，富集装置丰富了在发动机中要燃烧的混合气体的空燃比，并使燃料重整器（50）将还原气体供应到排气管（4）中以富集 废气空燃比。

公开(公告)号：US20100275581A1

公开(公告)日：2010-11-04

申请号：US12811817

申请日：2008-11-18

申请人： Katsuji Wada ,  Shinya Ishimaru ,  Jun Iwamoto ,  Nobuhiro Komatsu

发明人： Katsuji Wada ,  Shinya Ishimaru ,  Jun Iwamoto ,  Nobuhiro Komatsu

IPC分类号： F01N11/00 ,  F01N3/10 ,  F02M25/06 ,  F01N3/02 ,  F01N3/00

CPC分类号： B01D53/9409 ,  B01D53/9445 ,  B01D2251/202 ,  B01D2251/204 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/502 ,  B01D2255/90 ,  B01D2255/908 ,  F01N3/0814 ,  F01N3/0885 ,  F01N3/2882 ,  F01N13/009 ,  F01N2240/30 ,  F01N2570/14 ,  F01N2610/03 ,  F02D41/047 ,  F02D41/064 ,  F02D41/123 ,  F02D41/1446 ,  F02D2200/0804 ,  Y02A50/2341 ,  Y02A50/2344 ,  Y02T10/22 ,  Y02T10/42

摘要： Provided is an exhaust emission control device for an internal combustion engine capable of preventing NOx purification performance from degrading according to the operating condition. The exhaust emission control device comprises an NOx purification catalyst for adsorbing or occluding NOx in exhaust emissions and reducing the NOx, which is provided in an exhaust pipe (4), a catalyst converter (31) for continuously reducing the NOx in the exhaust emissions by using a reducing gas, which is provided in the exhaust pipe (4), a fuel reformer (50) for reforming fuel to manufacture a reformed gas containing hydrogen and carbon monoxide and supplying the reformed gas as the reducing gas from an introduction port (14) provided on the upstream side of the NOx purification catalyst (33) and the catalyst converter (31) of the exhaust pipe (4), which is provided separately from the exhaust pipe (4), an operating condition detecting means for detecting the operating condition of an engine, and an enriching means (40) for enriching the exhaust air-fuel ratio. The enriching means enriches the exhaust air-fuel ratio by supplying the reducing gas into the exhaust pipe (4) by using the fuel reformer (50) when the operating condition detected by the operating condition detecting means is a high-load operating condition.

摘要翻译： 本发明提供一种能够防止NOx净化性能根据运行条件劣化的内燃机的废气排放控制装置。 废气排放控制装置包括用于吸收或吸收废气排放中的NOx并且还原设置在排气管（4）中的NOx的NOx净化催化剂，催化剂转化器（31），用于连续地还原废气排放物中的NOx 使用设置在排气管（4）中的还原气体，用于重整燃料的燃料重整器（50），以制造含有氢和一氧化碳的重整气体，并从引入口（14）供给作为还原气体的重整气体 ）设置在与排气管（4）分开设置的排气管（4）的NOx净化催化剂（33）和催化剂转化器（31）的上游侧，操作条件检测装置 发动机的状态，以及用于丰富排气空燃比的浓缩装置（40）。 当由操作条件检测装置检测到的操作条件是高负载运行条件时，通过使用燃料重整器（50）将还原气体供应到排气管（4）中，富集装置丰富了排气空燃比。

公开(公告)号：US20080120969A1

公开(公告)日：2008-05-29

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：US20060140833A1

公开(公告)日：2006-06-29

申请号：US11311264

申请日：2005-12-20

申请人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko Morita ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： B01D53/56 ,  B01D53/34

CPC分类号： B01D53/9409 ,  B01D2251/2062 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N2370/04 ,  F01N2430/06 ,  F01N2510/063 ,  F01N2570/18 ,  F02D2250/36

摘要： An exhaust gas purifying apparatus for an internal combustion engine including an ammonia generating device and a NOx removing device. The ammonia generating device is provided in an exhaust system of the engine, and generates ammonia by a reaction of NOx and reducing components in exhaust gases when the exhaust gases are in a reducing state. The NOx removing device is provided downstream of the ammonia generating device, and adsorbs NOx in the exhaust gases when the exhaust gases are in an oxidizing state. The NOx removing device reduces the adsorbed NOx to generate ammonia and retains the generated ammonia when the exhaust gases are in the reducing state.

摘要翻译： 一种内燃机的废气净化装置，其包括氨生成装置和NOx除去装置。 氨发生装置设置在发动机的排气系统中，并且当废气处于还原状态时，通过NOx和废气中的还原组分的反应产生氨。 NOx排出装置设置在氨发生装置的下游侧，在排气处于氧化状态时吸附废气中的NOx。 当排气处于还原状态时，NOx去除装置减少吸附的NOx以产生氨并保留产生的氨。

公开(公告)号：US20080295498A1

公开(公告)日：2008-12-04

申请号：US12185409

申请日：2008-08-04

申请人： Tomoko MORITA ,  Norio Suzuki ,  Katsuji Wada

发明人： Tomoko MORITA ,  Norio Suzuki ,  Katsuji Wada

IPC分类号： F01N3/10

CPC分类号： B01D53/9409 ,  B01D2251/2062 ,  F01N3/0814 ,  F01N3/0842 ,  F01N13/009 ,  F01N2370/04 ,  F01N2430/06 ,  F01N2510/063 ,  F01N2570/18 ,  F02D2250/36

摘要： An exhaust gas purifying apparatus for an internal combustion engine including an ammonia generating device and a NOx removing device. The ammonia generating device is provided in an exhaust system of the engine, and generates ammonia by a reaction of NOx and reducing components in exhaust gases when the exhaust gases are in a reducing state. The NOx removing device is provided downstream of the ammonia generating device, and adsorbs NOx in the exhaust gases when the exhaust gases are in an oxidizing state. The NOx removing device reduces the adsorbed NOx to generate ammonia and retains the generated ammonia when the exhaust gases are in the reducing state.

摘要翻译： 一种内燃机的废气净化装置，其包括氨生成装置和NOx除去装置。 氨发生装置设置在发动机的排气系统中，并且当废气处于还原状态时，通过NOx和废气中的还原组分的反应产生氨。 NOx排出装置设置在氨发生装置的下游侧，在排气处于氧化状态时吸附废气中的NOx。 当排气处于还原状态时，NOx去除装置减少吸附的NOx以产生氨并保留产生的氨。

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。