公开(公告)号：US06601444B2

公开(公告)日：2003-08-05

申请号：US09820717

申请日：2001-03-30

Applicant: Kenichi Ohmori ,  Shusuke Akazaki ,  Kei Machida ,  Norihito Watanabe

Inventor： Kenichi Ohmori ,  Shusuke Akazaki ,  Kei Machida ,  Norihito Watanabe

IPC: G01M1900

CPC classification number: G01M15/102 ,  F01N3/0835 ,  F01N3/0878 ,  F01N13/008 ,  F01N2470/08 ,  F01N2560/028 ,  Y02T10/20

Abstract: In an internal combustion engine having a double-structure exhaust passage comprised of an inner (bypass) exhaust passage and an outer (main) exhaust passage arranged to surround the outside of the inner exhaust passage such that exhaust gases are discharged through one of the inner and outer exhaust passages, an exhaust gas characteristic detecting apparatus is capable of reliably detecting the characteristic of exhaust gases through the inner exhaust passage. The detecting apparatus comprises a guide pipe extending across the outer exhaust passage and having an exhaust gas introducing port facing the inner exhaust passage for introducing exhaust gases flowing into the inner exhaust passage into the guide pipe, and a sensor having a sensing unit for detecting the humidity of exhaust gases and arranged such that the sensing unit is positioned in the guide pipe.

Abstract translation: 在具有双层结构的排气通道的内燃机中，该排气通道包括内部（旁路）排气通道和外部（主要）排气通道，该排气通道和外部（主要）排气通道被设置成围绕内部排气通道的外部，使得废气通过内部 和排气通道，排气特性检测装置能够可靠地检测通过内排气通道的排气的特性。 所述检测装置包括：导管，其延伸穿过所述外排气通道，并具有面向所述内排气通道的排气导入口，用于将流入所述内排气通道的废气引入所述导管;以及传感器，具有检测单元 排气的湿度并且布置成使得感测单元位于导管中。

公开(公告)号：US06581370B2

公开(公告)日：2003-06-24

申请号：US09985764

申请日：2001-11-06

Applicant: Masahiro Sato ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Shusuke Akazaki ,  Takashi Haga ,  Tadashi Sato ,  Yasuyuki Miyahara

Inventor： Masahiro Sato ,  Yoshihisa Iwaki ,  Masaki Ueno ,  Shusuke Akazaki ,  Takashi Haga ,  Tadashi Sato ,  Yasuyuki Miyahara

IPC: F01N300

CPC classification number: F01N3/0835 ,  F01N3/0878 ,  F01N11/00 ,  F01N2550/06 ,  F01N2560/028 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/222 ,  F02D2200/0418 ,  G01N33/007 ,  Y02T10/20 ,  Y02T10/40 ,  Y02T10/47

Abstract: A failure determination device that detects the humidity of exhaust gases from an internal combustion engine and a control system for an exhaust passage changeover valve, which can switch the changeover valve with appropriate timing, thereby enabling sufficient purification of exhaust gases. An operating condition of the engine is detected. Based on the detected operating condition of the engine, it is determined whether the engine is in an operating condition in which failure determination of the humidity sensor can be executed. It is determined whether the humidity sensor has failed, based on a result of detection by the humidity sensor, when it has been judged that the failure determination of the humidity sensor can be executed.

Abstract translation: 一种故障判定装置，其检测来自内燃机的废气的湿度和排气通道切换阀的控制系统，其能够以适当的时刻切换切换阀，从而能够充分净化废气。 检测发动机的运行状态。 基于检测到的发动机的运转状况，判定发动机是否处于能够执行湿度传感器的故障判定的运转状态。 当判断出可以执行湿度传感器的故障判定时，基于湿度传感器的检测结果来确定湿度传感器是否发生故障。

公开(公告)号：US06327850B1

公开(公告)日：2001-12-11

申请号：US09680482

申请日：2000-10-06

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

IPC: F01N300

CPC classification number: F02D41/0082 ,  F02D41/1401 ,  F02D41/1402 ,  F02D41/1403 ,  F02D2041/141 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1431 ,  F02D2041/1433

Abstract: An object system is regarded as being equivalent to a system for generating an output of an O2 sensor or exhaust gas sensor from a target combined air-fuel ratio that is produced by combining target air-fuel ratios KCMD for respective cylinder groups according to a filtering process of the mixed model type. With the equivalent system as an object to be controlled, an air-fuel ratio processing controller determines a target combined air-fuel ratio, and determines a target air-fuel ratio KCMD for each of the cylinder groups from the target combined air-fuel ratio. The air-fuel ratios in the cylinder groups are manipulated into the target air-fuel ratio according to a feed-forward control process.

Abstract translation: 目标系统被认为等同于根据目标组合空燃比产生O2传感器或废气传感器的输出的系统，该目标组合空燃比是根据过滤器将各个气缸组的目标空燃比KCMD组合 混合模型类型的过程。 以等效系统作为被控制对象，空燃比处理控制器确定目标组合空燃比，并根据目标组合空燃比确定每个气缸组的目标空燃比KCMD 。 根据前馈控制过程将气缸组中的空燃比操纵为目标空燃比。

公开(公告)号：US06195988B1

公开(公告)日：2001-03-06

申请号：US09499975

申请日：2000-02-08

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

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

IPC: F01N300

CPC classification number: F02D41/1458 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1406 ,  F02D41/1477 ,  F02D41/1481 ,  F02D2041/1422 ,  F02D2041/1423 ,  F02D2041/1431

Abstract: 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.

Abstract translation: 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：US06188953B1

公开(公告)日：2001-02-13

申请号：US09311353

申请日：1999-05-13

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

IPC: F02D4114

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

Abstract: A plant control system has an actuator for generating an input to the plant, a first sensor for detecting an output from the plant, a manipulated variable determining unit for sequentially determining a manipulated variable which determines the input to the plant to equalize the output from the first sensor to a predetermined target value, an actuator controller for controlling operation of the actuator based on the manipulated variable determined by the manipulated variable determining unit, and an estimator for sequentially generating data representing an estimated value of the output from the first sensor after a total dead time which is the sum of a first dead time of the plant and a second dead time of a system which comprises the actuator and the actuator controller. The manipulated variable determining unit determines the manipulated variable based on the data generated by the estimator.

Abstract translation: 工厂控制系统具有用于产生对工厂的输入的致动器，用于检测来自工厂的输出的第一传感器，用于顺序地确定操作变量的操作变量确定单元，其确定对工厂的输入以使来自 第一传感器到预定目标值，执行器控制器，用于基于由操纵变量确定单元确定的操作变量来控制致动器的操作;以及估计器，用于依次产生表示在第一传感器之后的输出的估计值的数据 总死区时间是工厂的第一个死区时间和系统的第二死区时间的总和，其包括致动器和致动器控制器。 操纵变量确定单元基于由估计器生成的数据来确定操纵变量。

公开(公告)号：US6112517A

公开(公告)日：2000-09-05

申请号：US153300

申请日：1998-09-15

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Yoshihisa Iwaki

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

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

Abstract: A plant control system controls a plant modeled as a discrete-system model including an element relative to a response delay of the plant. The plant control system includes an actuator for generating an input to the plant, a first detector detecting an output from the plant, and a second detector for detecting the input to the plant which is generated by the actuator. An identifier identifies parameters to be established of the discrete-system model based on data representing an output of the first detector and data representing an output of the second detector. A manipulated variable determining unit determines a manipulated variable which determines the input to the plant to control operation of the actuator such that the output from the first detector will be equalized to a predetermined target value, according to a predetermining algorithm using the parameters of the discrete-system model which are identified by the identifier.

Abstract translation: 工厂控制系统控制模拟为包括相对于设备的响应延迟的元件的离散系统模型的工厂。 工厂控制系统包括用于产生对工厂的输入的致动器，检测来自工厂的输出的第一检测器和用于检测由致动器产生的对工厂的输入的第二检测器。 标识符基于表示第一检测器的输出的数据和表示第二检测器的输出的数据来标识要建立的离散系统模型的参数。 操纵变量确定单元根据使用离散的参数的预定算法确定确定对工厂的输入以控制致动器的操作的操作变量，使得来自第一检测器的输出将被均衡为预定目标值 系统模型由标识符标识。

公开(公告)号：US6079205A

公开(公告)日：2000-06-27

申请号：US153156

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: G05B21/02 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1477 ,  G05B13/047 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D41/008 ,  F02D41/1402 ,  F02D41/1456

Abstract: A plant control system controls a plant modeled as a discrete-system model including an element relative to a response delay of the plant and an element relative to a dead time of the plant. The plant control system includes an actuator for generating an input to the plant, a first detector for detecting an output from the plant, and a second detector for detecting the input to the plant. An estimator generates data representing an estimated value of an output of the first detector after the dead time, based on data representing the output of the first detector and data representing an output of the second detector. A manipulated variable determining unit determines a manipulated variable which determines the input to the plant, based on the estimated value, represented by the data generated by the estimator, of the output of the first detector after the dead time. The input to the plant from the actuator is controlled such that the output from the first detector will be equalized to a predetermined target value.

Abstract translation: 植物控制系统控制模拟为离散系统模型的植物，其包括相对于植物的响应延迟的元素和相对于植物的死时间的元件。 工厂控制系统包括用于产生对工厂的输入的致动器，用于检测来自工厂的输出的第一检测器和用于检测对工厂的输入的第二检测器。 基于表示第一检测器的输出的数据和表示第二检测器的输出的数据，估计器产生表示死区时间之后的第一检测器的输出的估计值的数据。 操作变量确定单元基于由估计器生成的数据表示的估计值，确定在死区时间之后的第一检测器的输出的确定到工厂的输入的操作变量。 来自致动器的对工厂的输入被控制，使得来自第一检测器的输出将被均衡到预定的目标值。

公开(公告)号：US6021767A

公开(公告)日：2000-02-08

申请号：US143535

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: F02D45/00 ,  F02D41/14 ,  F02D41/24 ,  G05B13/04 ,  F02D41/00

CPC classification number: G05B13/042 ,  F02D41/1402 ,  F02D41/2454 ,  F02D41/2477 ,  F02D2041/1415 ,  F02D2041/1418 ,  F02D2041/143 ,  F02D2041/1433 ,  F02D2250/12 ,  F02D41/1456 ,  F02D41/2483

Abstract: An air-fuel ratio control system for a multi-cylinder engine is provided. An air-fuel ratio sensor is arranged in an exhaust system of the engine for detecting an air-fuel ratio of a mixture supplied to the engine and for generating an output indicative of the air-fuel ratio of the mixture. An adaptive controller determines an amount of fuel to be supplied to the engine with a first predetermined repetition period in a manner such that the output from the air-fuel ratio sensor becomes equal to a desired value. An adaptive parameter-adjusting mechanism adjusts adaptive parameters used by the adaptive controller. In the adaptive parameter-adjusting mechanism, the adaptive parameters are calculated with a second predetermined repetition period longer than the first predetermined repetition period, and output data indicative of results of the calculation is generated. Further, the output data indicative of results of the calculation is smoothed and output data indicative of the smoothed data is generated with a repetition period at least equal to the first predetermined repetition period. The adaptive controller uses the smoothed data as values of the adaptive parameters.

Abstract translation: 提供了一种用于多缸发动机的空燃比控制系统。 在发动机的排气系统中布置有空燃比传感器，用于检测供应到发动机的混合物的空燃比并产生表示混合物的空燃比的输出。 自适应控制器以使得来自空燃比传感器的输出变得等于期望值的方式，以第一预定重复周期来确定要提供给发动机的燃料量。 自适应参数调整机制调整自适应控制器使用的自适应参数。 在自适应参数调整机构中，以比第一预定重复周期长的第二预定重复周期来计算自适应参数，并且生成表示计算结果的输出数据。 此外，表示计算结果的输出数据被平滑，并且以至少等于第一预定重复周期的重复周期生成指示平滑数据的输出数据。 自适应控制器使用平滑数据作为自适应参数的值。

公开(公告)号：US5880952A

公开(公告)日：1999-03-09

申请号：US834510

申请日：1997-04-04

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

IPC: F02D41/14 ,  G05B13/00 ,  G05B13/02

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

Abstract: According to a sliding mode control method, a hyperplane for a sliding mode control process is established with a linear function having as variables a plurality of state quantities of an object to be controlled. The state quantities are converged onto the hyperplane, and also converged toward a balanced point on the hyperplane while the state quantities are being converged onto the hyperplane, thereby to control the state quantities at target state quantities represented by the balanced point. The hyperplane are variably established depending on the manner in which the state quantities are converged onto the hyperplane.

Abstract translation: 根据滑动模式控制方法，利用线性函数建立用于滑动模式控制处理的超平面，该线性函数具有要被控制的对象的多个状态量的变量。 状态量收敛在超平面上，并且在状态量正在会聚到超平面上时也朝着超平面上的平衡点收敛，由此控制由平衡点表示的目标状态量处的状态量。 超平面根据状态量收敛到超平面上的方式可变地建立。

公开(公告)号：US5845491A

公开(公告)日：1998-12-08

申请号：US833131

申请日：1997-04-04

Applicant: Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

Inventor： Yuji Yasui ,  Shusuke Akazaki ,  Kohei Hanada

IPC: F02D45/00 ,  F01N3/24 ,  F02D41/14 ,  G05B13/02

CPC classification number: G05B13/0255 ,  F02D41/1403 ,  F02D41/1441 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1426 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D2250/12 ,  F02D41/1402 ,  F02D41/1456

Abstract: An air-fuel control system for use with an internal combustion engine has a catalytic converter in an exhaust system of the engine, for purifying an exhaust gas emitted from the engine, a first exhaust gas sensor in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, and a second exhaust gas sensor 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. A sliding mode controller determines a correction quantity at a first period to correct the air-fuel ratio of the engine so as to equalize the concentration of the component downstream of the catalytic converter to a predetermined appropriate value, according to a sliding mode control process based on the output from the second exhaust gas sensor. A feedback controller determines a correction quantity at a second period for a rate at which fuel is supplied to the engine so as to converge the concentration of the component downstream of the catalytic converter toward the predetermined appropriate value, based on the correction quantity to correct the air-fuel ratio and the output from the first exhaust gas sensor, and feedback-controls the rate at which fuel is supplied to the engine with the determined correction quantity. The first and second periods are established separately from each other.

Abstract translation: 一种与内燃机一起使用的空气燃料控制系统，在发动机的排气系统中具有催化转化器，用于净化从发动机排出的废气，用于检测空气燃料的排气系统中的第一废气传感器 催化转化器上游排气的比例和排气系统中的第二废气传感器，用于检测催化转化器下游已经通过催化转化器的废气的组分浓度。 滑动模式控制器在第一时段确定校正量，以校正发动机的空燃比，以使催化转化器下游的组分的浓度相等于预定的适当值，根据滑动模式控制过程为基础 在第二排气传感器的输出上。 反馈控制器基于校正量确定燃料被提供给发动机的速率的第二时间段的校正量，以便将催化转化器下游的组分的浓度朝向预定的适当值收敛，以校正 空燃比和第一废气传感器的输出，并且以确定的校正量反馈控制向发动机供应燃料的速率。 第一和第二个时期是彼此分开建立的。