公开(公告)号：US06354076B1

公开(公告)日：2002-03-12

申请号：US09354090

申请日：1999-07-15

申请人： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Satoh ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Takashi Haga ,  Tetsuo Endo

发明人： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Satoh ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Takashi Haga ,  Tetsuo Endo

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0093 ,  F01N13/0097 ,  F01N2550/03 ,  F01N2560/06 ,  F01N2560/14 ,  F01N2900/0422 ,  Y02T10/22 ,  Y02T10/47

摘要： A system for purifying exhaust gas generated by an internal combustion engine having an adsorbent, installed in an exhaust system of the engine, which adsorbs unburned components of the exhaust gas such as hydrocarbons generated by the engine. The system has a first temperature sensor for detecting a temperature of the adsorbent and timer for measuring a time until the detected temperature becomes greater or equal to a predetermined value, when the measured time is less than a threshold value, it is discriminated that the adsorbent deteriorates. With this, the deterioration of the adsorbent can be discriminated accurately.

摘要翻译： 一种用于净化由具有吸附剂的内燃机产生的废气的系统，其安装在发动机的排气系统中，其吸附由发动机产生的烃类等废气的未燃烧成分。 该系统具有用于检测吸附剂的温度的第一温度传感器和用于测量直到检测到的温度变得大于或等于预定值的时间的计时器，当测量的时间小于阈值时，区分吸附剂 恶化 由此，可以准确地区分吸附剂的劣化。

公开(公告)号：US06195988B1

公开(公告)日：2001-03-06

申请号：US09499975

申请日：2000-02-08

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

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

IPC分类号： F01N300

CPC分类号： F02D41/1458 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1406 ,  F02D41/1477 ,  F02D41/1481 ,  F02D2041/1422 ,  F02D2041/1423 ,  F02D2041/1431

摘要： An object system for generating an output signal of an O2 sensor from a target air-fuel ratio is expressed as a model including a response delay element and a dead time element. Data of identified values of parameters of the model are sequentially generated by an identifier. Data of an estimated value of the output signal of the O2 sensor after a dead time of the object system is sequentially generated by an estimator. The target air-fuel ratio is generated according to an adaptive sliding mode control process performed by a sliding mode controller using the data of the identified and estimated values. The air-fuel ratio of an internal combustion engine is manipulated on the basis of the target air-fuel ratio according to a feed-forward control process.

摘要翻译： 用于从目标空燃比产生O2传感器的输出信号的目标系统被表示为包括响应延迟元件和死区时间元件的模型。 通过标识符顺序地生成模型的参数的标识值的数据。 由对象系统的死区时间之后的O2传感器的输出信号的估计值的数据由估计器依次产生。 目标空燃比根据滑动模式控制器使用所识别的和估计值的数据执行的自适应滑动模式控制处理来生成。 根据前馈控制处理，基于目标空燃比来操作内燃机的空燃比。

公开(公告)号：US06550449B2

公开(公告)日：2003-04-22

申请号：US09741837

申请日：2000-12-22

申请人： Shusuke Akazaki ,  Yoshihisa Iwaki ,  Masaki Ueno

发明人： Shusuke Akazaki ,  Yoshihisa Iwaki ,  Masaki Ueno

IPC分类号： F02D4116

CPC分类号： F02D41/0245 ,  F02D37/02 ,  F02P5/1506 ,  Y02T10/26 ,  Y02T10/46

摘要： A control system for an internal combustion engine having a catalyst arranged in the exhaust system is disclosed. In the control system, catalyst temperature rise accelerating control is executed by increasing the intake air amount immediately after starting of the engine and retarding the ignition timing to make the rotational speed of the engine coincide with a target rotational speed. The air-fuel ratio of an air-fuel mixture supplied to the engine is controlled to a lean region with respect to the stoichiometric ratio immediately after starting of the engine. The degree of making the air-fuel ratio leaner is suppressed when the retard amount of the ignition timing during the execution of the catalyst temperature rise accelerating control is less than a predetermined retard amount.

摘要翻译： 公开了一种具有布置在排气系统中的催化剂的内燃机的控制系统。 在控制系统中，催化剂升温加速控制是通过增加发动机起动后立即进气量而延迟点火正时，使发动机的转速与目标转速一致。 提供给发动机的空气燃料混合物的空燃比被控制为相对于发动机起动之后的化学计量比的稀薄区域。 当执行催化剂温度升高加速控制期间的点火正时的延迟量小于预定的延迟量时，抑制使空燃比更稀的程度。

公开(公告)号：US06449944B1

公开(公告)日：2002-09-17

申请号：US09743906

申请日：2001-01-17

申请人： Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki ,  Tadashi Satoh ,  Masaki Ueno

发明人： Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki ,  Tadashi Satoh ,  Masaki Ueno

IPC分类号： F01N300

CPC分类号： F02D41/1403 ,  F01N11/007 ,  F01N2550/02 ,  F01N2900/0422 ,  F02D41/0235 ,  F02D41/1402 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/22 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1431 ,  F02D2041/1432 ,  F02D2041/1433 ,  Y02T10/47

摘要： A first exhaust gas sensor 5 (air-fuel ratio sensor) and a second exhaust gas sensor 6 (O2 sensor) are disposed respectively upstream and downstream of a catalytic converter. An exhaust system E which ranges from the exhaust gas sensor 5 to the exhaust gas sensor 6 and includes the catalytic converter 3 is regarded as an object exhaust system E, and a behavior of the object exhaust system E is modeled. When an internal combustion engine 1 is in operation, parameters to be set of the model of the object exhaust system E are sequentially identified based on the data of outputs of the exhaust gas sensors 5, 6. A deteriorated state of the catalytic converter 3 is determined based on the data of the identified values. Concurrent with the determination of the deteriorated state, a target air-fuel ratio for the internal combustion engine 1 is sequentially determined in order to converge the output of the exhaust gas sensor 5 to a given target value, and the air-fuel ratio of the internal combustion engine 1 is controlled to converge the output (the detected value of the air-fuel ratio) of the first exhaust gas sensor 5 to the target air-fuel ratio, for thereby allowing the catalytic converter 3 to achieve an optimum purifying capability. In this manner, the deteriorated state of the catalytic converter 3 can be determined in various operation states of the internal combustion engine 1 while keeping the purifying capability of the catalytic converter 3.

摘要翻译： 第一排气传感器5（空燃比传感器）和第二排气传感器6（O2传感器）分别设置在催化转化器的上游和下游。 从排气传感器5到排气传感器6并且包括催化转化器3的排气系统E被认为是对象排气系统E，并且对对象排气系统E的行为进行建模。 当内燃机1运转时，根据排气传感器5,6的输出数据，依次识别对象排气系统E的模型的参数，催化转化器3的劣化状态为 基于所识别的值的数据确定。 与劣化状态的判定同时，为了将排气传感器5的输出收敛到给定的目标值，依次确定内燃机1的目标空燃比，空燃比 控制内燃机1使第一废气传感器5的输出（空燃比的检测值）与目标空燃比收敛，从而使催化转化器3达到最佳的净化能力。 以这种方式，可以在保持催化转化器3的净化能力的同时，在内燃机1的各种运行状态下确定催化转化器3的劣化状态。

公开(公告)号：US06449943B1

公开(公告)日：2002-09-17

申请号：US09748189

申请日：2000-12-27

申请人： Masaki Ueno ,  Yoshihisa Iwaki ,  Shusuke Akazaki

发明人： Masaki Ueno ,  Yoshihisa Iwaki ,  Shusuke Akazaki

IPC分类号： F01N300

CPC分类号： F01N11/007 ,  F01N2550/02 ,  F01N2900/0422 ,  Y02T10/47

摘要： The values of parameters of a model of an object exhaust system including a catalytic converter are identified from the data of outputs from an air-fuel ratio sensor and an O2 sensor which are disposed respectively upstream and downstream of the catalytic converter while an internal combustion engine associated with the catalytic converter is in operation. A deterioration evaluating parameter representing the degree of variation of time-series data of the identified parameters is determined from the time-series data of the identified parameters. The deteriorated state of the catalytic converter is evaluated based on the deterioration evaluating parameter.

公开(公告)号：US06292739B1

公开(公告)日：2001-09-18

申请号：US09465765

申请日：1999-12-17

申请人： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Sato ,  Masaki Ueno ,  Yoshihisa Iwaki ,  Hiroshi Tagami ,  Shuji Nagatani

发明人： Yuji Yasui ,  Shusuke Akazaki ,  Tadashi Sato ,  Masaki Ueno ,  Yoshihisa Iwaki ,  Hiroshi Tagami ,  Shuji Nagatani

IPC分类号： F02D4114

CPC分类号： F02D41/008 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1456 ,  F02D41/1487 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433

摘要： An allowable range (adaptive allowable range) for limiting a manipulated variable generated in order to converge the difference between an output from an O2 sensor disposed downstream of a catalytic converter and a target value thereof to “0” is sequentially updated depending on how the manipulated variable deviates from the allowable range.

摘要翻译： 为了将设置在催化转化器的下游的O2传感器的输出与目标值的输出之间的差积分为“0”，限制所产生的操作变量的允许范围（自适应容许范围）根据被操纵的 变量偏离容许范围。

公开(公告)号：US06230486B1

公开(公告)日：2001-05-15

申请号：US09465395

申请日：1999-12-17

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

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

IPC分类号： F01N300

CPC分类号： F02D41/1441 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1456 ,  G05B13/0255

摘要： 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 manipulated variable generated by the controller represents the difference between the air-fuel ratio and the reference value, required to converge the output of the O2 sensor to the target value.

摘要翻译： 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。 由控制器产生的操纵变量表示将O2传感器的输出收敛到目标值所需的空燃比和参考值之间的差。

公开(公告)号：US06276131B1

公开(公告)日：2001-08-21

申请号：US09465404

申请日：1999-12-17

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

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

IPC分类号： F01N300

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

摘要： 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.

摘要翻译： 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

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

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

IPC分类号： F02D4114

CPC分类号： 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

摘要： 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.

摘要翻译： 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：US06820413B2

公开(公告)日：2004-11-23

申请号：US10235815

申请日：2002-09-06

申请人： Masaki Ueno ,  Yoshihisa Iwaki ,  Shiro Takakura ,  Yasuyuki Miyahara ,  Tadashi Sato

发明人： Masaki Ueno ,  Yoshihisa Iwaki ,  Shiro Takakura ,  Yasuyuki Miyahara ,  Tadashi Sato

IPC分类号： F01N300

CPC分类号： F01N3/0835 ,  F01N3/0814 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F02D41/0245 ,  F02D41/1446 ,  F02D41/1495 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/0418 ,  F02P5/1506 ,  Y02T10/22 ,  Y02T10/26 ,  Y02T10/46 ,  Y02T10/47

摘要： A state determining apparatus for an exhaust gas purifier is provided for accurately determining the state of the exhaust gas purifier including an adsorbent for adsorbing hydrocarbons, including a deterioration of the adsorbent, in accordance with an ignition time of an internal combustion engine. The state determining apparatus for an exhaust gas purifier is arranged in an exhaust system of the internal combustion engine for determining the state of the exhaust gas purifier including the adsorbent capable of adsorbing hydrocarbons and moisture in exhaust gas. The state determining apparatus has a humidity sensor arranged at a location downstream of the adsorbent in the exhaust system for detecting the humidity of exhaust gases, and an ECU for determining the state of the adsorbent in accordance with the humidity of exhaust gases detected by the humidity sensor, and the ignition time of the internal combustion engine.

摘要翻译： 提供一种用于排气净化器的状态确定装置，用于根据内燃机的点火时间精确地确定包括用于吸附烃的吸附剂的废气净化器的状态，包括吸附剂的劣化。 用于排气净化器的状态判定装置设置在内燃机的排气系统中，用于确定包括能够吸附废气中的碳氢化合物和水分的吸附剂的废气净化器的状态。 状态判定装置具有布置在排气系统中用于检测废气湿度的吸附剂下游位置处的湿度传感器，以及用于根据湿度检测到的废气湿度来确定吸附剂的状态的ECU 传感器和内燃机的点火时间。