公开(公告)号：US06378296B1

公开(公告)日：2002-04-30

申请号：US09551209

申请日：2000-04-17

Applicant: Yuji Yasui ,  Yoshihisa Iwaki ,  Masahiro Satoh

Inventor： Yuji Yasui ,  Yoshihisa Iwaki ,  Masahiro Satoh

IPC: F01N300

CPC classification number: F01N3/0835 ,  F01N3/0807 ,  F01N3/0878 ,  F01N11/00 ,  F01N2550/03 ,  F01N2900/0422 ,  Y02T10/20 ,  Y02T10/47

Abstract: A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage branched from an exhaust pipe of the engine, which is opened by a switch-over valve at starting of the engine to introduce the exhaust gas such that the adsorbent adsorbs unburned HC in exhaust gas generated by the engine and is closed such that the adsorbent desorbs the adsorbed HC and the desorbed HC is thereafter recirculated at a position upstream of a catalyst. In the system, an inflow amount and outflow amount of HC flowing in and out of the adsorbent are determined based at least on the engine operating conditions and the detected concentration of HC. Then, the ratio therebetween is calculated and compared with a threshold value and if the ratio is less than the threshold value, the adsorbent is discriminated to be degraded, thereby enabling to improve the discrimination accurately.

Abstract translation: 一种用于区分内燃机的排气净化系统的劣化的系统，该内燃机具有安装在从发动机的排气管分支的旁路废气通道的吸附剂，所述旁路废气通道在发动机起动时由切换阀打开以引入 废气使得吸附剂吸附由发动机产生的废气中的未燃烧的HC，并且被关闭，使得吸附剂解吸吸附的HC，然后解吸的HC在催化剂上游的位置再循环。 在该系统中，至少基于发动机工作条件和检测出的HC浓度来确定流入和流出吸附剂的HC的流入量和流出量。 然后，计算它们之间的比例并将其与阈值进行比较，并且如果该比率小于阈值，则鉴别出吸附剂劣化，从而能够准确地提高鉴别。

公开(公告)号：US06334304B1

公开(公告)日：2002-01-01

申请号：US09551170

申请日：2000-04-17

Applicant: Kei Machida ,  Tetsuo Endo ,  Shiro Takakura ,  Yuji Yasui

Inventor： Kei Machida ,  Tetsuo Endo ,  Shiro Takakura ,  Yuji Yasui

IPC: F01N300

CPC classification number: F01N3/0835 ,  B01D53/944 ,  B01D53/9495 ,  F01N3/0814 ,  F01N3/0871 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F01N2570/12 ,  F01N2900/0422 ,  F02D41/1446 ,  F02D45/00 ,  F02D2200/0804 ,  Y02T10/22 ,  Y02T10/47

Abstract: A system for discriminating degradation of an exhaust purification system of an internal combustion engine having an adsorbent installed at a bypass exhaust gas passage adsorbing unburned HC in exhaust gas generated by the engine. Based on the assumption that the degradation of the adsorbent made from zeolite progresses or advances depending on its temperature, the temperature is detected and if it exceeds a predetermined temperature, an index indicative of the degree of degradation progress is determined based on a surplus exceeding the predetermined temperature. The index is accumulated to be compared with a threshold value and the adsorbent is discriminated to be degraded when the accumulated index exceeds the threshold value, thereby enabling to discriminate the adsorbent degradation accurately with a simple configuration.

Abstract translation: 一种用于区分内燃机的排气净化系统的劣化的系统，所述内燃机的排气净化系统具有安装在旁路废气通道上的吸附剂，吸附由发动机产生的废气中的未燃HC。 基于由沸石制成的吸附剂的降解根据其温度进行或退化的假设，检测温度并且如果其超过预定温度，则表示降解进行程度的指标基于超过 预定温度。 累积指数与阈值进行比较，并且当累积指数超过阈值时，鉴别吸附剂劣化，从而能够以简单的配置精确地鉴别吸附剂劣化。

公开(公告)号：US06276131B1

公开(公告)日：2001-08-21

申请号：US09465404

申请日：1999-12-17

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

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

IPC: F01N300

CPC classification number: F02P5/1506 ,  F02D31/003 ,  F02D37/02 ,  F02D41/0255 ,  F02D2041/1422 ,  F02P5/1508 ,  Y02T10/26 ,  Y02T10/46

Abstract: While the amount of intake air introduced into an internal combustion engine is being increased by an intake air quantity control unit, an ignition timing control unit manipulates the ignition timing of the internal combustion engine to converge the rotational speed of the internal combustion engine to a target rotational speed according to a feedback control process (PI control process). The ignition timing control unit has a function to vary the feedback gain of the feedback control process depending on the ignition timing, such that the feedback gain is smaller as the ignition timing being manipulated is more retarded.

Abstract translation: 当通过进气量控制单元增加引入内燃机的进气量时，点火正时控制单元操纵内燃机的点火正时以将内燃机的转速收敛到目标 转速根据反馈控制过程（PI控制过程）。 点火正时控制单元具有根据点火正时来改变反馈控制过程的反馈增益的功能，使得当被操纵的点火正时被延迟时反馈增益较小。

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。