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公开(公告)号：US20080028749A1
公开(公告)日：2008-02-07
申请号：US11882255
申请日：2007-07-31
申请人： Hisao Haga , Norio Suzuki , Katsuji Wada , Nobuhiro Komatsu
发明人： Hisao Haga , Norio Suzuki , Katsuji Wada , Nobuhiro Komatsu
IPC分类号： F01N3/20
CPC分类号： F02D41/0285 , F01N3/0885 , F01N13/009 , F01N13/0097 , F02B31/06 , F02B2275/14 , F02D41/1441 , F02D2200/0818 , F02M26/05 , F02M26/15 , F02M26/25 , 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 sulfur purging is computed from the consumption of reducing agent contained in the exhaust gas in the NOX catalytic converter. This computation may be based on the air fuel ratio of 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 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： 在其排气通路中设置有NO x催化转化器的内燃机的控制装置中，根据NO x催化转化器的废气中所含的还原剂的消耗量计算出硫吹扫的进度。 该计算可以基于NO x催化转化器上游排气的空燃比和废气中所含还原剂的估计消耗量，或NOX上游和下游排气的空燃比之差 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。
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公开(公告)号：US08028518B2
公开(公告)日：2011-10-04
申请号：US11882255
申请日：2007-07-31
申请人： Hisao Haga , Norio Suzuki , Katsuji Wada , Nobuhiro Komatsu
发明人： Hisao Haga , Norio Suzuki , Katsuji Wada , Nobuhiro Komatsu
IPC分类号： F01N3/00
CPC分类号： F02D41/0285 , F01N3/0885 , F01N13/009 , F01N13/0097 , F02B31/06 , F02B2275/14 , F02D41/1441 , F02D2200/0818 , F02M26/05 , F02M26/15 , F02M26/25 , 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 sulfur purging is computed from the consumption of reducing agent contained in the exhaust gas in the NOX catalytic converter. This computation may be based on the air fuel ratio of 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 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： 在其排气通路中设置有NO x催化转化器的内燃机的控制装置中，根据NO x催化转化器的废气中所含的还原剂的消耗量计算出硫吹扫的进度。 该计算可以基于NO x催化转化器上游排气的空燃比和废气中所含还原剂的估计消耗量，或NOX上游和下游排气的空燃比之差 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。
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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
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。
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公开(公告)号：US20080039975A1
公开(公告)日：2008-02-14
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
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。
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公开(公告)号：US07827783B2
公开(公告)日：2010-11-09
申请号：US11905443
申请日：2007-10-01
申请人： Hisao Haga , Norio Suzuki , Katsuji Wada
发明人： Hisao Haga , Norio Suzuki , Katsuji Wada
IPC分类号： F01N3/00
CPC分类号： F01N3/0807 , F01N3/035 , F01N3/0842 , F01N11/002 , F01N11/007 , F01N13/009 , F01N2560/06 , F01N2560/14 , F02B37/00 , F02D41/024 , F02D41/028 , F02D41/405 , F02D2200/0802 , F02D2200/0818 , Y02T10/26 , Y02T10/44 , Y02T10/47
摘要： An exhaust gas purifying apparatus for an internal combustion engine having a NOx removing device provided in an exhaust system of the engine and at least one fuel injector for injecting fuel into a combustion chamber of the engine. A temperature of the NOx removing device is detected and a regeneration process, which removes sulfur oxide accumulated in the NOx removing device, is performed. The regeneration process is performed by performing at least one post injection after performing a main injection by the at least one fuel injector to raise a temperature of the NOx removing device or by increasing a main injection amount of fuel to raise the temperature of the NOx removing device without performing the post injection. The exhaust gases are then controlled to flow into the NOx removing device in the reducing state.
摘要翻译： 一种用于内燃机的废气净化装置，其具有设置在发动机的排气系统中的NOx去除装置和至少一个用于将燃料喷射到发动机的燃烧室中的燃料喷射器。 检测NOx去除装置的温度，并且执行去除积存在NOx去除装置中的硫氧化物的再生处理。 通过在由至少一个燃料喷射器执行主喷射之后执行至少一个后喷射以升高NOx去除装置的温度或者通过增加燃料的主喷射量以提高NOx去除的温度来执行再生过程 设备，而不执行后注入。 然后控制废气以还原状态流入NOx去除装置。
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公开(公告)号：US20080092529A1
公开(公告)日：2008-04-24
申请号：US11905443
申请日：2007-10-01
申请人： Hisao Haga , Norio Suzuki , Katsuji Wada
发明人： Hisao Haga , Norio Suzuki , Katsuji Wada
CPC分类号： F01N3/0807 , F01N3/035 , F01N3/0842 , F01N11/002 , F01N11/007 , F01N13/009 , F01N2560/06 , F01N2560/14 , F02B37/00 , F02D41/024 , F02D41/028 , F02D41/405 , F02D2200/0802 , F02D2200/0818 , Y02T10/26 , Y02T10/44 , Y02T10/47
摘要： An exhaust gas purifying apparatus for an internal combustion engine having a NOx removing device provided in an exhaust system of the engine and at least one fuel injector for injecting fuel into a combustion chamber of the engine. A temperature of the NOx removing device is detected and a regeneration process, which removes sulfur oxide accumulated in the NOx removing device, is performed. The regeneration process is performed by performing at least one post injection after performing a main injection by the at least one fuel injector to raise a temperature of the NOx removing device or by increasing a main injection amount of fuel to raise the temperature of the NOx removing device without performing the post injection. The exhaust gases are then controlled to flow into the NOx removing device in the reducing state.
摘要翻译： 一种用于内燃机的废气净化装置，其具有设置在发动机的排气系统中的NOx去除装置和至少一个用于将燃料喷射到发动机的燃烧室中的燃料喷射器。 检测NOx去除装置的温度，并且执行去除积存在NOx去除装置中的硫氧化物的再生处理。 通过在由至少一个燃料喷射器执行主喷射之后执行至少一个后喷射以升高NOx去除装置的温度或者通过增加燃料的主喷射量以提高NOx去除的温度来执行再生过程 设备，而不执行后注入。 然后控制废气以还原状态流入NOx去除装置。
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公开(公告)号：US07963101B2
公开(公告)日：2011-06-21
申请号：US11981358
申请日：2007-10-31
申请人： Norio Suzuki , Nobuhiro Komatsu , Tomoko Morita , Hisao Haga
发明人： Norio Suzuki , Nobuhiro Komatsu , Tomoko Morita , Hisao Haga
IPC分类号： F01N3/00
CPC分类号： F02D41/0275 , F01N3/0814 , F01N3/0842 , F01N13/009 , F02D41/06 , F02D41/10 , F02D2200/0802 , Y02T10/22 , Y02T10/24
摘要： An exhaust gas purifying device for an internal combustion engine, comprises: a first catalyst (TWC 7, example) having a reducing capability; a second catalyst (LNC 9, example) provided downstream of the first catalyst, the second catalyst is adapted to trap NOx in a lean condition of air fuel ratio of an exhaust gas and reduce the trapped NOx in a rich condition of air fuel ratio of the exhaust gas; and an exhaust air fuel ratio control means for controlling an exhaust air fuel ratio to decrease the NOx in the first and second catalysts, wherein the exhaust air fuel ratio control means conducts NOx decreasing control suitable for the first catalyst when the second catalyst is in an inactive state and the first catalyst is in an active state, and wherein the exhaust air fuel ratio control means conducts NOx decreasing control suitable for the second catalyst after the second catalyst is activated.
摘要翻译： 一种用于内燃机的废气净化装置，包括：具有还原能力的第一催化剂（例如TWC7）; 设置在第一催化剂下游的第二催化剂（LNC9），第二催化剂适于将NOx吸收在排气的空气燃料比的稀薄条件下，并且在空燃比浓的条件下减少捕获的NOx 废气; 以及排气空燃比控制装置，用于控制排气空燃比以减少第一和第二催化剂中的NOx，其中当第二催化剂处于第一催化剂时，排气空燃比控制装置进行适合于第一催化剂的NOx减少控制 非活性状态，第一催化剂处于活性状态，其中排气空燃比控制装置在第二催化剂活化后进行适合于第二催化剂的NOx减少控制。
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公开(公告)号：US20080120964A1
公开(公告)日：2008-05-29
申请号：US11981358
申请日：2007-10-31
申请人： Norio Suzuki , Nobuhiro Komatsu , Tomoko Morita , Hisao Haga
发明人： Norio Suzuki , Nobuhiro Komatsu , Tomoko Morita , Hisao Haga
IPC分类号： F01N3/20
CPC分类号： F02D41/0275 , F01N3/0814 , F01N3/0842 , F01N13/009 , F02D41/06 , F02D41/10 , F02D2200/0802 , Y02T10/22 , Y02T10/24
摘要： An exhaust gas purifying device for an internal combustion engine, comprises: a first catalyst (TWC 7, example) having a reducing capability; a second catalyst (LNC 9, example) provided downstream of the first catalyst, the second catalyst is adapted to trap NOx in a lean condition of air fuel ratio of an exhaust gas and reduce the trapped NOx in a rich condition of air fuel ratio of the exhaust gas; and an exhaust air fuel ratio control means for controlling an exhaust air fuel ratio to decrease the NOx in the first and second catalysts, wherein the exhaust air fuel ratio control means conducts NOx decreasing control suitable for the first catalyst when the second catalyst is in an inactive state and the first catalyst is in an active state, and wherein the exhaust air fuel ratio control means conducts NOx decreasing control suitable for the second catalyst after the second catalyst is activated.
摘要翻译： 一种用于内燃机的废气净化装置，包括：具有还原能力的第一催化剂（例如TWC7）; 设置在第一催化剂下游的第二催化剂（LNC9），第二催化剂适于将NOx吸收在排气的空气燃料比的稀薄条件下，并且在空燃比浓的条件下减少捕获的NOx 废气; 以及排气空燃比控制装置，用于控制排气空燃比以减少第一和第二催化剂中的NOx，其中当第二催化剂处于第一催化剂时，排气空燃比控制装置进行适合于第一催化剂的NOx减少控制 非活性状态，第一催化剂处于活性状态，其中排气空燃比控制装置在第二催化剂活化后进行适合于第二催化剂的NOx减少控制。
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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。
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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
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。
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