公开(公告)号：US06266605B1

公开(公告)日：2001-07-24

申请号：US09465766

申请日：1999-12-17

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Sato ,  Masaki Ueno ,  Yoshihisa Iwaki

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Sato ,  Masaki Ueno ,  Yoshihisa Iwaki

IPC: F02D4114

CPC classification number: F02D41/1458 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  G05B13/0255

Abstract: A plant control system has a reference value setting unit for variably setting a reference value for an air-fuel ratio to be given to an exhaust system including a catalytic converter, depending on a component based on an adaptive control law of a manipulated variable of the air-fuel ratio generated by a controller according to an adaptive sliding mode control process in order to converge an output of an O2 sensor disposed downstream of the catalytic converter to a target value. The plant control system also has an estimator for estimating the difference between an output of the O2 sensor after the dead time of the exhaust system and a target value therefor, using the difference between the set reference value and a detected value of the air-fuel ratio, and giving the estimated difference to the controller.

Abstract translation: 工厂控制系统具有参考值设定单元，用于根据构成要素的操作变量的自适应控制定律，根据构成要素，对包含催化转换器的排气系统进行空燃比的基准值的可变设定 由控制器根据自适应滑动模式控制过程产生的空燃比，以将设置在催化转化器下游的O2传感器的输出收敛到目标值。 工厂控制系统还具有用于估计在排气系统的死区时间之后的O 2传感器的输出与其目标值之间的差异的估计器，使用设定的参考值与空燃比的检测值之间的差 比率，并给予控制器估计的差异。

公开(公告)号：US06256983B1

公开(公告)日：2001-07-10

申请号：US09548931

申请日：2000-04-13

Applicant: Yuji Yasui

Inventor： Yuji Yasui

IPC: F01N300

CPC classification number: G05B13/042 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1479 ,  F02D41/1481 ,  F02D41/1482 ,  F02D2041/1409 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  G05B13/047

Abstract: A downstream exhaust system controller generates a target value for the output of an upstream O2 sensor disposed between first and second catalytic converters for converging the output of a downstream O2 sensor disposed downstream of the second catalytic converter to a target value while taking into account the dead time of a downstream exhaust system. An upstream exhaust system controller generates a target air-fuel ratio for an internal combustion engine for converging the output of the upstream O2 sensor to a target value while taking into account the dead time of an upstream exhaust system. A fuel processing controller controls the air-fuel ratio of the internal combustion engine at the target air-fuel ratio according to a feedback control process.

Abstract translation: 下游排气系统控制器产生用于输出设置在第一和第二催化转化器之间的上游O 2传感器的输出的目标值，用于将设置在第二催化转化器下游的下游O2传感器的输出会聚到目标值，同时考虑死区 下游排气系统的时间。 上游排气系统控制器在考虑了上游排气系统的死区时间的同时，生成用于将上游O 2传感器的输出会聚到目标值的内燃机的目标空燃比。 燃料处理控制器根据反馈控制过程控制内燃机的目标空燃比的空燃比。

公开(公告)号：US6082099A

公开(公告)日：2000-07-04

申请号：US153032

申请日：1998-09-15

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

IPC: F02D45/00 ,  F02D41/00 ,  F02D41/14 ,  F02D41/34 ,  G05B13/00 ,  G05B13/02 ,  G05B13/04 ,  G05B21/02 ,  F01N3/00

CPC classification number: F02D41/008 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1456 ,  G05B13/047 ,  G05B21/02 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D41/1402

Abstract: A plant control system for controlling a plant includes an actuator for generating an input to the plant and a first detector for detecting an output from the plant. A manipulated variable determining unit determines a manipulated variable which determines the input to the plant according to a sliding mode control process such that an output from the first detector will be equalized to a predetermined target value. The manipulated variable determining unit determines the manipulated variable to converge a plurality of state quantities, which comprise differences between a plurality of present and previous time-series data of the output of the first detector and the target value, onto a balanced point on a hyperplane for the sliding mode control process, which is defined by a linear function having variables represented respectively by the state quantities.

Abstract translation: 用于控制设备的设备控制系统包括用于产生对工厂的输入的致动器和用于检测来自所述设备的输出的第一检测器。 操作变量确定单元根据滑动模式控制处理来确定确定对工厂的输入的操作变量，使得来自第一检测器的输出将被等于预定的目标值。 操作变量确定单元确定操纵变量以将包括第一检测器的输出的多个当前时间序列数据和目标值之间的差异的多个状态量收敛到超平面上的平衡点上 对于滑动模式控制过程，其由具有分别由状态量表示的变量的线性函数定义。

公开(公告)号：US6026793A

公开(公告)日：2000-02-22

申请号：US143542

申请日：1998-08-28

Applicant: Yuji Yasui ,  Yusuke Hasegawa ,  Yoshihisa Iwaki ,  Shusuke Akazaki ,  Hiroshi Kitagawa

Inventor： Yuji Yasui ,  Yusuke Hasegawa ,  Yoshihisa Iwaki ,  Shusuke Akazaki ,  Hiroshi Kitagawa

IPC: F02D41/14 ,  G05B13/02 ,  G05B13/04 ,  G05D11/13 ,  F02M25/00

CPC classification number: G05B13/042 ,  F02D41/1402 ,  F02D41/1456 ,  F02D41/2454 ,  F02D41/2477 ,  F02D2041/1415 ,  F02D2041/1418 ,  F02D2041/143 ,  F02D2041/1433 ,  F02D41/2483

Abstract: A control system for a plant includes a sensor for detecting an output from the plant, an adaptive controller for controlling a manipulated variable applied to control of the plant in a manner such that an output from the sensor becomes equal to a desired value, and an adaptive parameter vector-adjusting mechanism for adjusting an adaptive parameter vector used by the adaptive controller. The adaptive parameter vector-adjusting mechanism is constructed such that an updating component for updating the adaptive parameter vector is added to an initial value of the adaptive parameter vector, and updates the adaptive parameter vector by multiplying at least part of preceding values of the updating component by a predetermined coefficient which is larger than 0 but smaller than 1.

Abstract translation: 一种用于设备的控制系统包括用于检测来自所述设备的输出的传感器，用于以使得所述传感器的输出变为等于所需值的方式控制施加于所述设备的控制的操纵变量的自适应控制器，以及 自适应参数矢量调整机制，用于调整自适应控制器使用的自适应参数矢量。 自适应参数矢量调整机构被构造成使得用于更新自适应参数矢量的更新部件被添加到自适应参数矢量的初始值，并且通过将更新部件的至少一部分先前值相乘来更新自适应参数矢量 通过大于0但小于1的预定系数。

公开(公告)号：US5852930A

公开(公告)日：1998-12-29

申请号：US833091

申请日：1997-04-04

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

IPC: F02D41/14 ,  F01N3/00

CPC classification number: F02D41/1473 ,  F02D41/1403 ,  F02D41/1441 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D41/1402 ,  F02D41/1456

Abstract: An air-fuel control system for use with an internal combustion engine has a catalytic converter disposed in an exhaust system of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor disposed in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, a second exhaust gas sensor disposed in the exhaust system for detecting the concentration of a component of the exhaust gas which has passed through the catalytic converter, downstream of the catalytic converter, and a control unit for controlling an air-fuel ratio of the engine based on outputs from the first exhaust gas sensor and the second exhaust gas sensor. The control unit includes an adaptive sliding mode controller for determining a correction quantity to correct the air-fuel ratio of the engine so as to equalize the concentration of the component of the exhaust gas downstream of the catalytic converter to a predetermined appropriate value, according to an adaptive sliding mode control process based on the output from the second exhaust gas sensor, and a feedback controller for controlling a rate at which fuel is supplied to the engine so as to converge the concentration of the component of the exhaust gas downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity and the output from the first exhaust gas sensor.

Abstract translation: 一种与内燃机一起使用的空气燃料控制系统，具有设置在发动机的排气系统中的用于净化从发动机排出的排气的催化转化器，设置在排气系统中的第一排气传感器，用于检测空气 - 催化转化器上游排气的燃料比，设置在排气系统中的第二废气传感器，用于检测通过催化转化器的排气的成分浓度，催化转化器的下游，以及 控制单元，用于基于来自第一排气传感器和第二排气传感器的输出来控制发动机的空燃比。 控制单元包括自适应滑动模式控制器，用于确定校正量以校正发动机的空燃比，以便将催化转化器下游的排气的分量的浓度相等到预定的适当值，根据 基于来自第二废气传感器的输出的自适应滑动模式控制过程和用于控制向发动机供应燃料的速率的反馈控制器，以使催化剂下游的排气的组分的浓度 转换器基于校正量和来自第一废气传感器的输出而朝向预定的适当值。

公开(公告)号：US08875497B2

公开(公告)日：2014-11-04

申请号：US13439434

申请日：2012-04-04

Applicant: Hideki Matsunaga ,  Yuji Yasui ,  Eiji Hashimoto ,  Hisao Haga ,  Naohiro Sato ,  Masafumi Sakota

Inventor： Hideki Matsunaga ,  Yuji Yasui ,  Eiji Hashimoto ,  Hisao Haga ,  Naohiro Sato ,  Masafumi Sakota

IPC: F01N3/00 ,  F01N3/10 ,  F01N13/00 ,  F01N3/20 ,  F02D41/00 ,  F01N3/08 ,  F02D41/10 ,  F02D41/14 ,  B01D53/94 ,  F02D41/02

CPC classification number: F02D41/0055 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2255/912 ,  F01N3/0814 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N13/009 ,  F01N13/0097 ,  F01N2370/04 ,  F01N2560/026 ,  F01N2570/14 ,  F02D41/0275 ,  F02D41/10 ,  F02D41/1446 ,  F02D41/146 ,  F02D2041/1468 ,  F02D2200/0802 ,  F02D2200/0806 ,  Y02A50/2344 ,  Y02A50/2345 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust purification system for an internal combustion engine is provided that can steadily maintain a NOx purification rate of a selective reduction catalyst to be high without allowing the fuel economy or marketability to deteriorate. The exhaust purification system includes a NO2—NOx ratio adjustment mechanism that causes a NO2—NOx ratio to change; and a NO2—NOx ratio perturbation controller that executes NO2—NOx ratio perturbation control so that a NO2 balance of the selective reduction catalyst in a predetermined time period, with NO2 adsorption being positive and NO2 release being negative, is 0. Herein, NO2—NOx ratio perturbation control is defined as control that alternately executes NO2 increase control to cause the NO2—NOx ratio to be greater than a reference value near 0.5, and NO2 decrease control to cause the NO2—NOx ratio to be less than the reference value.

Abstract translation: 提供一种用于内燃机的排气净化系统，其能够稳定地将选择还原型催化剂的NOx净化率维持在高，而不会使燃料经济性或可销售性劣化。 排气净化系统包括使NO2-NOx比变化的NO2-NOx比调节机构; 以及NO2-NOx比扰动控制器，其执行NO2-NOx比扰动控制，使得在NO 2吸附为正，NO2释放为负的预定时间段内的选择还原催化剂的NO 2平衡为0.这里，NO2- NOx比例扰动控制被定义为交替地执行NO2增加控制以使NO 2 -NO x比大于接近0.5的参考值的控制，并且NO 2减少控制以使NO 2 -NOO比小于参考值。

公开(公告)号：US08671660B2

公开(公告)日：2014-03-18

申请号：US12962039

申请日：2010-12-07

Applicant: Yuji Yasui ,  Eiji Hashimoto

Inventor： Yuji Yasui ,  Eiji Hashimoto

IPC: F01N3/00 ,  F01N3/10

CPC classification number: F01N3/2066 ,  F01N3/206 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/03 ,  F01N2550/05 ,  F01N2560/021 ,  F01N2560/026 ,  F01N2570/14 ,  F01N2610/02 ,  F01N2610/1473 ,  F01N2900/1402 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

Abstract: A catalyst degradation determination device is provided that can determine the degradation of a selective reduction catalyst with high precision while also suppressing a temporary decline in purification performance. By way of controlling a urea injection device, the catalyst degradation determination device increases, in a selective reduction catalyst in a state in which the storage amount is a maximum, the storage amount thereof by a detection reduced-amount portion DSTNH3—JD, and then decreases the amount until it is determined that ammonia slip has occurred. Then, degradation is determined based on the time at which the slip determination flag FNH3—SLIP was set to “1” when fluctuating the storage amount. The detection reduced-amount portion DSTNH3—JD is set to a value that is larger than the storage capacity of the selective reduction catalyst in a degraded state and smaller than the storage capacity of the selective reduction catalyst in a normal state.

Abstract translation: 提供一种能够高精度地确定选择还原型催化剂的降解的催化剂劣化测定装置，同时抑制净化性能的暂时下降。 通过控制尿素喷射装置，催化剂劣化判定装置在存储量最大的状态下的选择还原催化剂中，通过检测减量部分DSTNH3-JD的存储量增加，然后 减少量，直到确定发生氨滑移。 然后，当波动存储量时，基于滑移确定标记FNH3-SLIP被设置为“1”的时间来确定劣化。 检测减量部DSTNH3-JD被设定为大于选择还原型催化剂处于劣化状态的储存容量并且小于选择还原催化剂在正常状态下的储存容量的值。

公开(公告)号：US08459011B2

公开(公告)日：2013-06-11

申请号：US13013505

申请日：2011-01-25

Applicant: Yuji Yasui

Inventor： Yuji Yasui

IPC: F01N3/00 ,  F01N3/10

CPC classification number: F01N3/208 ,  F01N3/106 ,  F01N11/00 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2560/021 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1402 ,  F01N2900/1602 ,  F01N2900/1616 ,  F01N2900/1622 ,  Y02T10/24 ,  Y02T10/47

Abstract: A selective reduction catalyst is disposed in an exhaust passage of an engine for reducing NOx in exhaust gases from the engine under existence of a reducing agent. The reducing agent or a reactant for generating the reducing agent is supplied to the upstream side of the selective reduction catalyst. Occurrence of a reducing-agent slip in which the reducing agent is discharged to the downstream side of the selective reduction catalyst is determined. A storage amount indicative of an amount of the reducing agent stored in the selective reduction catalyst is temporarily reduced from the state where the storage amount is at the maximum, and thereafter the storage amount is increased until the occurrence of the reducing-agent slip is detected. A supply correction amount for correcting an amount of the reducing agent is calculated according to an occurrence state of the reducing agent slip when the storage amount is changed.

Abstract translation: 选择还原催化剂设置在用于在还原剂存在下从发动机排出的废气中的NOx的发动机的排气通道中。 将还原剂或用于产生还原剂的反应物供给到选择还原催化剂的上游侧。 确定将还原剂排出到选择还原催化剂的下游侧的还原剂滑移的发生。 从储存量最大的状态暂时减少表示存储在选择还原催化剂中的还原剂的量的储存量，此后，存储量增加，直到检测到还原剂滑移的发生 。 当存储量改变时，根据还原剂滑移的发生状态计算用于校正还原剂量的供给修正量。

公开(公告)号：US20120255286A1

公开(公告)日：2012-10-11

申请号：US13439434

申请日：2012-04-04

Applicant: Hideki MATSUNAGA ,  Yuji Yasui ,  Eiji Hashimoto ,  Hisao Haga ,  Naohiro Sato ,  Masafumi Sakota

Inventor： Hideki MATSUNAGA ,  Yuji Yasui ,  Eiji Hashimoto ,  Hisao Haga ,  Naohiro Sato ,  Masafumi Sakota

IPC: F01N3/10

CPC classification number: F02D41/0055 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2255/912 ,  F01N3/0814 ,  F01N3/106 ,  F01N3/2066 ,  F01N3/208 ,  F01N13/009 ,  F01N13/0097 ,  F01N2370/04 ,  F01N2560/026 ,  F01N2570/14 ,  F02D41/0275 ,  F02D41/10 ,  F02D41/1446 ,  F02D41/146 ,  F02D2041/1468 ,  F02D2200/0802 ,  F02D2200/0806 ,  Y02A50/2344 ,  Y02A50/2345 ,  Y02T10/24 ,  Y02T10/47

Abstract: An exhaust purification system for an internal combustion engine is provided that can steadily maintain a NOx purification rate of a selective reduction catalyst to be high without allowing the fuel economy or marketability to deteriorate. The exhaust purification system includes a NO2—NOx ratio adjustment mechanism that causes a NO2—NOx ratio to change; and a NO2—NOx ratio perturbation controller that executes NO2—NOx ratio perturbation control so that a NO2 balance of the selective reduction catalyst in a predetermined time period, with NO2 adsorption being positive and NO2 release being negative, is 0. Herein, NO2—NOx ratio perturbation control is defined as control that alternately executes NO2 increase control to cause the NO2—NOx ratio to be greater than a reference value near 0.5, and NO2 decrease control to cause the NO2—NOx ratio to be less than the reference value.

Abstract translation: 提供一种用于内燃机的排气净化系统，其能够稳定地将选择还原型催化剂的NOx净化率维持在高，而不会使燃料经济性或可销售性劣化。 排气净化系统包括使NO2-NOx比变化的NO2-NOx比调节机构; 以及NO2-NOx比扰动控制器，其执行NO2-NOx比扰动控制，使得在NO 2吸附为正，NO2释放为负的预定时间段内的选择还原催化剂的NO 2平衡为0.这里，NO2- NOx比例扰动控制被定义为交替地执行NO2增加控制以使NO 2 -NO x比大于接近0.5的参考值的控制，并且NO 2减少控制以使NO 2 -NOO比小于参考值。

公开(公告)号：USRE43588E1

公开(公告)日：2012-08-21

申请号：US10800651

申请日：2004-03-16

Applicant: Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Tadashi Satoh ,  Takashi Haga

Inventor： Shusuke Akazaki ,  Kohei Hanada ,  Yuji Yasui ,  Tadashi Satoh ,  Takashi Haga

IPC: F02M25/06

CPC classification number: B01D53/9495 ,  B01D53/9445 ,  B01D53/9486 ,  B01D53/96 ,  B01D2253/108 ,  B01D2253/3425 ,  F01N3/0835 ,  F01N3/0871 ,  F01N3/0878 ,  F01N9/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/36 ,  F01N2250/12 ,  F01N2370/40 ,  F01N2410/00 ,  F01N2410/12 ,  F02D9/04 ,  F02D9/1055 ,  F02D21/08 ,  F02M26/15 ,  F02M26/46 ,  F02M26/49 ,  Y02T10/20 ,  Y02T10/22 ,  Y02T10/47

Abstract: A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The bypass valve member is opened for a period after engine startup to introduce the exhaust gas such that the adsorber installed in the bypass adsorbs the unburnt HC component in the exhaust gas. The adsorber adsorbs the HC component when the exhaust temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. In the system, the bypass valve is provided at or close to the branching point in the exhaust pipe and a chamber is provided close to the branching point such that the conduit is connected to the bypass at the one end in the chamber. The bypass valve member is combined with an exhaust pipe valve member as a combination valve such that when the bypass valve member closes the bypass, the exhaust pipe valve member opens the exhaust pipe. With the arrangement, the system can effectively prevent the exhaust pipe from being clogged even when a valve for closing a bypass is stuck in the closed position. At the same time, the system can provide a relatively short EGR conduit for recirculating unburnt HC component adsorbed from the adsorber and the adsorption and desorption are conducted optimally. A system for purifying exhaust gas generated by an internal combustion engine including a bypass branching out from the exhaust pipe downstream of a catalyst and merging to the exhaust pipe, an adsorber installed in the bypass, a bypass valve member which closes the bypass, and an EGR conduit connected to the bypass at one end and connected to the air intake system for recirculating the exhaust gas to the air intake system. The adsorber adsorbs the HC component in the exhaust gas when the exhaust gas temperature rises and the adsorbed component is recirculated to the air intake system through the EGR conduit. The bypass valve member is combined with an exhaust pipe vale member as a combination valve such that when the bypass valve member closes the bypass, the exhaust pipe valve member opens the exhaust pipe.