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公开(公告)号：US06481201B2
公开(公告)日：2002-11-19
申请号：US09880029
申请日：2001-06-14
申请人： Junichi Kako , Toshinari Nagai , Naohide Fuwa , Kazunori Kojima , Akihiro Katayama , Naoto Kato
发明人： Junichi Kako , Toshinari Nagai , Naohide Fuwa , Kazunori Kojima , Akihiro Katayama , Naoto Kato
IPC分类号： F01N300
CPC分类号： F01N11/007 , F02D41/0295 , F02D41/047 , F02D41/1441 , F02D41/1456 , F02D2041/1422 , F02D2200/0814 , F02D2200/0816 , Y02T10/47
摘要： An air-fuel ratio control apparatus of an internal combustion engine according to the present invention is provided with oxygen storage amount estimating means, downstream exhaust air-fuel ratio detecting means, maximum oxygen storage amount estimating means, and air-fuel ratio target setting means. The oxygen storage amount estimating means estimates an oxygen storage amount of an exhaust purifying catalyst, based on a history of an oxygen adsorption/desorption amount of the exhaust purifying catalyst located on an exhaust path. The downstream exhaust air-fuel ratio detecting means is located downstream of the exhaust purifying catalyst and detects an exhaust air-fuel ratio downstream of the exhaust purifying catalyst. The maximum oxygen storage amount estimating means estimates a maximum oxygen storage amount, based on an oxygen storage amount estimate when the exhaust air-fuel ratio detected is a predetermined air-fuel ratio. This permits effective utilization of oxygen occlusion capability of the exhaust purifying catalyst and improvement in exhaust purification performance.
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公开(公告)号：US08332122B2
公开(公告)日：2012-12-11
申请号：US12669902
申请日：2008-07-08
申请人： Hiroyuki Tanaka , Junichi Kako , Kaoru Ohtsuka , Shinichi Soejima , Keisuke Kawai , Naoto Kato , Hayato Nakada
发明人： Hiroyuki Tanaka , Junichi Kako , Kaoru Ohtsuka , Shinichi Soejima , Keisuke Kawai , Naoto Kato , Hayato Nakada
IPC分类号： G06F17/00
CPC分类号： F02D41/1401 , F02D37/02 , F02D41/1497 , F02D2041/1418 , F02D2200/1004 , F02D2250/18
摘要： A control apparatus for a vehicle drive unit including a control structure of a hierarchical type having a demand generation level, a mediation level, and a control variable setting level and a signal is transmitted in one direction from a higher level of hierarchy to a lower level of hierarchy. The demand generation level includes demand output elements for each capability. The mediation level includes mediation elements, each corresponding to a classified category of demands. Each of the mediation elements collects demand values of the category of which the mediation elements are in charge and performs mediation according to a rule to arrive at a single demand value. The control variable setting level includes an adjuster portion adjusting each of the mediated demand values based on a relationship between each other and control variable calculation elements calculating a control variable of each of a plurality of actuators based on the adjusted demand value.
摘要翻译： 一种用于车辆驱动单元的控制装置，其包括具有需求生成级别，中介级别和控制变量设定级别以及信号的分级类型的控制结构，在一个方向上从较高层次到较低级别 的层次结构。 需求生成级别包括每种能力的需求输出元素。 调解级别包括调解元素，每个调解元素对应于分类的需求类别。 每个调解元件收集调解元素负责的类别的需求值，并根据规则执行调解以获得单个需求值。 控制变量设定水平包括基于彼此之间的关系和基于经调整的需求值计算多个致动器中的每一个的控制变量的控制变量计算元件来调整每个中介要求值的调节器部分。
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公开(公告)号：US06901744B2
公开(公告)日：2005-06-07
申请号：US10212105
申请日：2002-08-06
申请人： Junichi Kako , Toshinari Nagai , Naohide Fuwa , Kazunori Kojima , Akihiro Katayama , Naoto Kato
发明人： Junichi Kako , Toshinari Nagai , Naohide Fuwa , Kazunori Kojima , Akihiro Katayama , Naoto Kato
CPC分类号： F01N11/007 , F02D41/0295 , F02D41/047 , F02D41/1441 , F02D41/1456 , F02D2041/1422 , F02D2200/0814 , F02D2200/0816 , Y02T10/47
摘要： An air-fuel ratio control apparatus of an internal combustion engine according to the present invention is provided with oxygen storage amount estimating means, downstream exhaust air-fuel ratio detecting means, maximum oxygen storage amount estimating means, and air-fuel ratio target setting means. The oxygen storage amount estimating means estimates an oxygen storage amount of an exhaust purifying catalyst, based on a history of an oxygen adsorption/desorption amount of the exhaust purifying catalyst located on an exhaust path. The downstream exhaust air-fuel ratio detecting means is located downstream of the exhaust purifying catalyst and detects an exhaust air-fuel ratio downstream of the exhaust purifying catalyst. The maximum oxygen storage amount estimating means estimates a maximum oxygen storage amount, based on an oxygen storage amount estimate when the exhaust air-fuel ratio detected is a predetermined air-fuel ratio. This permits effective utilization of oxygen occlusion capability of the exhaust purifying catalyst and improvement in exhaust purification performance.
摘要翻译： 根据本发明的内燃机的空燃比控制装置设置有储氧量估计装置，下游排气空燃比检测装置，最大氧气存储量估计装置和空燃比目标设定装置 。 氧气存储量估计装置基于位于排气路径上的排气净化催化剂的氧吸附/脱附量的历史来估计排气净化催化剂的氧气存储量。 下游排气空燃比检测装置位于排气净化催化剂的下游，并且检测排气净化催化剂下游的排气空燃比。 最大氧气存储量估计装置基于当检测到的排气空燃比为预定空燃比时的氧气存储量估计值来估计最大氧气存储量。 这样可以有效地利用排气净化催化剂的吸氧能力，提高排气净化性能。
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公开(公告)号：US10241483B2
公开(公告)日：2019-03-26
申请号：US14768606
申请日：2014-02-12
申请人： Kota Sata , Junichi Kako , Satoru Watanabe , Yuta Suzuki , Masato Edahiro
发明人： Kota Sata , Junichi Kako , Satoru Watanabe , Yuta Suzuki , Masato Edahiro
IPC分类号： G05B17/02
摘要： The present invention relates to a control device design method for a control device that determines a manipulation amount of a control object having a dead time by feedback control so as to bring a control amount of the control object closer to a target value. The method according to the present invention includes a step of designing a feedback loop that computes a correction amount for the manipulation amount using a plurality of controllers including a prediction model of the control object, a step of deriving the same number of delay elements as the plurality of controllers from a dead time element of the prediction model, and a step of allocating the plurality of controllers associated with the delay elements to a plurality of arithmetic units so that the computation of the feedback loop is performed by parallel computation by the plurality of arithmetic units that operate in parallel.
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公开(公告)号：US5970707A
公开(公告)日：1999-10-26
申请号：US150266
申请日：1998-09-09
申请人： Hiroshi Sawada , Junichi Kako
发明人： Hiroshi Sawada , Junichi Kako
IPC分类号： F01N3/08 , B01D53/94 , F01N3/20 , F01N3/24 , F01N11/00 , F01N13/02 , F01N13/04 , F02D41/02 , F02D41/14 , F01N3/00
CPC分类号： B01D53/9454 , B01D53/9495 , F01N11/007 , F01N13/009 , F01N13/011 , F01N3/0842 , F02D41/0275 , F02D41/1441 , F01N2250/12 , F01N2550/02 , F01N2550/03 , F02D41/1456 , Y02T10/22 , Y02T10/47
摘要： In an exhaust gas purification device for an internal combustion engine, a three-way catalyst and a NO.sub.X occluding and reducing catalyst (a NORC) are disposed in the exhaust gas passage of an engine in this order from the upstream side. A first air-fuel ratio sensor is disposed in the exhaust gas passage between the three-way catalyst and the NORC, and a second air-fuel ratio sensor is disposed in the exhaust gas passage downstream of the NORC. An engine electronic control unit (ECU) changes the operating air-fuel ratio of the engine from a lean air-fuel ratio to a rich air-fuel ratio and a rich air-fuel ratio to a lean air-fuel ratio in order to evaluate the abilities of the three-way catalyst and the NORC. The ECU evaluates the catalytic abilities based on the output of the first air-fuel ratio sensor when the engine air-fuel ratio is changed. Further, the ECU evaluates the catalytic ability and the NO.sub.X absorbing capacity of the NORC based on the outputs of the first and the second air-fuel ratio sensor when the engine operating air-fuel ratio is changed. The evaluation of the abilities of both the three-way catalyst and the NORC in one successive changing operation of the engine operating air-fuel ratio is based on only the outputs of the first and the second air-fuel ratio sensor.
摘要翻译： 另外，在内燃机的废气净化装置中，从上游侧依次配置有发动机的排气通路中的三元催化剂和NO X吸留还原催化剂（NORC）。 第一空燃比传感器设置在三通催化剂和NORC之间的排气通道中，第二空燃比传感器设置在NORC下游的排气通道中。 发动机电子控制单元（ECU）将发动机的运转空燃比从稀空燃比变为浓空燃比和浓空燃比为了评价 三元催化剂和NORC的能力。 当发动机空燃比改变时，ECU基于第一空燃比传感器的输出来评估催化能力。 此外，当发动机运转空燃比变化时，ECU基于第一和第二空燃比传感器的输出，评价NORC的催化能力和NO x吸收能力。 在发动机工作空燃比的一个连续变化操作中对三元催化剂和NORC两者的能力的评估仅基于第一和第二空燃比传感器的输出。
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公开(公告)号：US20100268436A1
公开(公告)日：2010-10-21
申请号：US12670746
申请日：2008-10-01
CPC分类号： F02D41/10 , B60W2710/0616 , F02D11/105 , F02D37/02 , F02D41/0085 , F02D41/307 , F02D2200/602 , F02D2200/701 , F02D2250/18 , F02D2250/22 , F02N11/04 , F02N2200/046 , F02P5/1504 , Y02T10/46 , Y10T477/677
摘要： This invention is intended to ensure that a control device for a vehicle drive unit is capable of realizing desired torque by making the main-actuator and sub-actuator collaborate adequately while holding the interposition of the sub-actuator as low as possible. For this end, a future target of torque that is going to be output from the engine and a realization timing of the future target are taken as reservation information for reserving engine torque regulation. Next, the required period, which is required to realize the future target when a main-actuator (a throttle) is operated to regulate the torque, is computed from a current engine operating condition. Then, the operation of the main-actuator is started at the timing preceding the realization timing by the required period for realizing the future target. In parallel with that, a sub-actuator (an ignition system) is operated to cancel out a torque change induced by the operation of the main-actuator during the period from the start timing of the operation of the main-actuator to the realization timing.
摘要翻译： 本发明旨在确保用于车辆驱动单元的控制装置能够通过使主致动器和副致动器协调一致地实现期望的扭矩，同时保持副致动器的插入尽可能低。 为此，将要从发动机输出的扭矩的未来目标和未来目标的实现定时作为用于保留发动机转矩调节的预约信息。 接下来，根据当前的发动机工作条件计算当主执行器（节气门）操作以调节转矩时实现未来目标所需的期间。 然后，在实现定时之前的时刻开始主执行器的操作达到实现未来目标的所需时间段。 与此同时，副致动器（点火系统）被操作以抵消在从主致动器的操作的开始定时到实现定时的期间由主致动器的操作引起的转矩变化 。
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公开(公告)号：US06698188B2
公开(公告)日：2004-03-02
申请号：US09998181
申请日：2001-12-03
申请人： Yasuyuki Irisawa , Hiroshi Tanaka , Junichi Kako
发明人： Yasuyuki Irisawa , Hiroshi Tanaka , Junichi Kako
IPC分类号： F01N300
CPC分类号： F01N3/0807 , F01N3/0842 , F01N3/106 , F01N13/009 , F01N2240/25 , F01N2560/026 , F02D41/0275 , F02D41/1454 , F02D41/146 , F02D2041/1468
摘要： A NOx occluding member that occludes NOx when the air-fuel ratio is on the fuel-lean side is disposed in an engine exhaust passage. An NOx ammonia sensor is disposed in the engine exhaust passage downstream of the NOx occluding member. A surplus amount of a reducing agent that is not used to release NOx is determined from a change in the ammonia concentration detected by the NOx ammonia sensor when the air-fuel ratio is changed to the fuel-rich side so as to release the NOx from the NOx occluding member.
摘要翻译： 在空燃比处于燃料贫乏侧时封闭NOx的NOx吸留部件设置在发动机排气通路内。 NO x氨传感器设置在NOx吸留构件下游的发动机排气通道中。 当空燃比改变为富燃料侧时，由NOx氨传感器检测到的氨浓度的变化确定了不用于释放NOx的剩余量的还原剂，以便将NOx从 NOx吸留构件。
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18.发明授权公开(公告)号：US06283089B1
公开(公告)日：2001-09-04
申请号：US09525462
申请日：2000-03-15
申请人： Naohide Fuwa , Takayuki Demura , Junichi Kako
发明人： Naohide Fuwa , Takayuki Demura , Junichi Kako
IPC分类号： F02B1700
CPC分类号： F02P5/1516 , F02B17/005 , F02B2075/125 , F02D41/0057 , F02D41/0065 , F02D41/3029 , F02D41/3064 , F02D2041/389 , F02D2250/12 , F02M26/48 , Y02T10/123 , Y02T10/46 , Y02T10/47
摘要： A direct-injection internal combustion engine can smoothly switch and transition between a first operation mode and a second operation mode according to an operating condition of the engine. An engine control amount in the first operation mode is calculated differently from an engine control amount in the second operation mode. However, even if the engine control amount requires correction only in the second operation mode, calculation of a correction amount is made during the first operation mode as well. During a transition from the first operation mode to the second operation mode, the correction amount calculated during the first operation mode is taken into account in calculating an engine control amount. As the correction amount is already available at the time of transition, a suitable engine control amount can be immediately obtained.
摘要翻译： 直喷式内燃机可以根据发动机的运转状况顺利地在第一运行模式和第二运转模式之间切换和转换。 与第二操作模式中的发动机控制量不同地计算第一操作模式中的发动机控制量。 然而，即使发动机控制量仅在第二操作模式下需要校正，也在第一操作模式期间进行校正量的计算。 在从第一操作模式转换到第二操作模式期间，在计算发动机控制量时考虑在第一操作模式期间计算的校正量。 由于校正量在转换时已经可用，因此可以立即获得合适的发动机控制量。
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公开(公告)号：US06263667B1
公开(公告)日：2001-07-24
申请号：US09664449
申请日：2000-09-18
申请人： Hiroshi Sawada , Junichi Kako
发明人： Hiroshi Sawada , Junichi Kako
IPC分类号： F01N300
CPC分类号： F02D41/0275 , B01D53/9409 , B01D53/9495 , F01N3/0842 , F01N11/007 , F01N13/009 , F01N13/011 , F01N2430/06 , F01N2550/02 , F01N2550/03 , F01N2900/0422 , F02D2200/0816 , Y02T10/47
摘要： In an exhaust gas purification device for an internal combustion engine, a NOX occluding and reducing catalyst is disposed in the exhaust gas passage of an engine. The NOX occluding and reducing catalyst absorbs NOX in the exhaust gas when the air-fuel ratio of the exhaust gas is at a lean air-fuel ratio and releases and reduces NOX when the air-fuel ratio of the exhaust gas is at a rich air-fuel ratio. The air-fuel ratio of the exhaust gas flowing out from the catalyst is detected by an air-fuel ratio sensor disposed in the exhaust gas passage downstream of the catalyst. When the air-fuel ratio of the exhaust gas flowing into the catalyst is changed from a rich air-fuel ratio to a lean air-fuel ratio, the air-fuel ratio of the exhaust gas flowing out from the catalyst stays at a stoichiometric air-fuel ratio before it changes to a lean air-fuel ratio. The length of the period in which the air-fuel ratio of the exhaust gas flowing out from the catalyst stays at a stoichiometric air-fuel ratio corresponds to the magnitude of the ability of the NOX occluding and reducing catalyst as a reducing catalyst. Thus, by measuring the length of the stoichiometric air-fuel ratio period of the exhaust gas flowing out from the NOX occluding and reducing catalyst, the ability of the NOX occluding and reducing catalyst as a reducing catalyst can be precisely evaluated.
摘要翻译： 在内燃机的废气净化装置中，在发动机的排气通路内配置有NO x吸留还原催化剂。 当废气的空燃比处于稀空燃比时，NO x吸留和还原催化剂吸收废气中的NO x，并且当排气的空燃比处于浓空气时，NOx还原和还原NO x - 燃料比。 从催化剂流出的废气的空燃比由设置在催化剂下游的废气通道中的空燃比传感器来检测。 当流入催化剂的废气的空燃比从浓空燃比变为稀空燃比时，从催化剂流出的废气的空燃比保持在化学计量空气 - 燃料比变化到稀薄的空燃比。 从催化剂流出的废气的空燃比保持在理论空燃比的时段的长度对应于作为还原催化剂的NO x吸藏和还原催化剂的能力的大小。 因此，通过测定从NO X吸留还原催化剂流出的废气的理论空燃比期间的长度，可以精确地评价作为还原催化剂的NO X吸留还原催化剂的能力。
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公开(公告)号：US08209104B2
公开(公告)日：2012-06-26
申请号：US12670746
申请日：2008-10-01
CPC分类号： F02D41/10 , B60W2710/0616 , F02D11/105 , F02D37/02 , F02D41/0085 , F02D41/307 , F02D2200/602 , F02D2200/701 , F02D2250/18 , F02D2250/22 , F02N11/04 , F02N2200/046 , F02P5/1504 , Y02T10/46 , Y10T477/677
摘要： This invention is intended to ensure that a control device for a vehicle drive unit is capable of realizing desired torque by making the main-actuator and sub-actuator collaborate adequately while holding the interposition of the sub-actuator as low as possible. For this end, a future target of torque that is going to be output from the engine and a realization timing of the future target are taken as reservation information for reserving engine torque regulation. Next, the required period, which is required to realize the future target when a main-actuator (a throttle) is operated to regulate the torque, is computed from a current engine operating condition. Then, the operation of the main-actuator is started at the timing preceding the realization timing by the required period for realizing the future target. In parallel with that, a sub-actuator (an ignition system) is operated to cancel out a torque change induced by the operation of the main-actuator during the period from the start timing of the operation of the main-actuator to the realization timing.
摘要翻译： 本发明旨在确保用于车辆驱动单元的控制装置能够通过使主致动器和副致动器协调一致地实现期望的扭矩，同时保持副致动器的插入尽可能低。 为此，将要从发动机输出的扭矩的未来目标和未来目标的实现定时作为用于保留发动机转矩调节的预约信息。 接下来，根据当前的发动机工作条件计算当主执行器（节气门）操作以调节转矩时实现未来目标所需的期间。 然后，在实现定时之前的时刻开始主执行器的操作达到实现未来目标的所需时间段。 与此同时，副致动器（点火系统）被操作以抵消在从主致动器的操作的开始定时到实现定时的期间由主致动器的操作引起的转矩变化 。
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