公开(公告)号：US06941936B2

公开(公告)日：2005-09-13

申请号：US10269990

申请日：2002-10-15

申请人： Yuji Yasui ,  Yoshihisa Iwaki

发明人： Yuji Yasui ,  Yoshihisa Iwaki

IPC分类号： F02D45/00 ,  F02D21/08 ,  F02D35/00 ,  F02D41/00 ,  F02D41/02 ,  F02D41/14

CPC分类号： F02D41/1456 ,  F02D41/003 ,  F02D41/2454 ,  F02D41/2464 ,  F02D41/2477 ,  F02D41/2483

摘要： A control system for an internal combustion engine having at least one control device that affects an air-fuel ratio of an air-fuel mixture to be supplied to the engine, is disclosed. An air-fuel ratio correction coefficient is calculated for correcting an amount of fuel to be supplied to the engine so that the detected air-fuel ratio coincides with a target air-fuel ratio. An air-fuel ratio affecting parameter indicative of a degree of influence that an operation of the control device exercises upon the air-fuel ratio, is calculated. A correlation parameter which defines a correlation between the air-fuel ratio correction coefficient and the air-fuel ratio affecting parameter is calculated using a sequential statistical processing algorithm. A learning correction coefficient relating to a change in characteristics of the control device is calculated using the correlation parameter. The air-fuel ratio is controlled using the air-fuel ratio correction coefficient and the learning correction coefficient.

摘要翻译： 公开了一种内燃机的控制系统，其具有至少一个影响供给发动机的空气燃料混合物的空燃比的控制装置。 计算空燃比校正系数，用于校正供给到发动机的燃料量，使得检测出的空燃比与目标空燃比一致。 计算表示控制装置的运转对空燃比的影响程度的空燃比影响参数。 使用顺序统计处理算法计算定义空燃比校正系数和空燃比影响参数之间的相关性的相关参数。 使用相关参数计算与控制装置的特性变化有关的学习校正系数。 利用空燃比校正系数和学习校正系数来控制空燃比。

公开(公告)号：US06830032B2

公开(公告)日：2004-12-14

申请号：US10164056

申请日：2002-06-05

申请人： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

发明人： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

IPC分类号： F02D4100

CPC分类号： F02D35/0007 ,  F02D41/1403 ,  G05B13/047 ,  G05B13/048

摘要： A control system for a throttle valve actuating device is disclosed. The throttle valve actuating device includes a throttle valve of an internal combustion engine and an actuator for actuating the throttle valve. A control object model is defined by modeling the throttle valve actuating device. The throttle valve actuating device is controlled based on a controlled object model so that an opening of said throttle valve coincides with a target opening.

摘要翻译： 公开了一种用于节流阀致动装置的控制系统。 节流阀致动装置包括内燃机的节流阀和用于致动节流阀的致动器。 控制对象模型通过对节流阀致动装置进行建模来定义。 基于受控对象模型来控制节流阀致动装置，使得所述节流阀的开度与目标开度一致。

公开(公告)号：US06760658B2

公开(公告)日：2004-07-06

申请号：US10001817

申请日：2001-12-05

申请人： Yuji Yasui ,  Hiroshi Tagami ,  Yoshihisa Iwaki ,  Kunihiro Morishita

发明人： Yuji Yasui ,  Hiroshi Tagami ,  Yoshihisa Iwaki ,  Kunihiro Morishita

IPC分类号： B60T712

CPC分类号： F01N3/0842 ,  F02D41/0275 ,  F02D41/1404 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1458 ,  F02D2041/1433

摘要： An exhaust emission control system for an internal combustion engine having an exhaust system is disclosed. The control system may include an exhaust gas purifying device provided in the exhaust system and an oxygen concentration sensor provided downstream of the exhaust gas purifying device. The exhaust gas purifying device may include at least an oxygen storing ability or a nitrogen oxide storing ability. An air-fuel ratio of an air-fuel mixture supplied to the engine may be enriched with respect to the stoichiometric air-fuel ratio, so as to reduce the oxygen or nitrogen oxides stored in the exhaust gas purifying device. A predicted value of the output from the oxygen concentration sensor may be calculated using a predictor based on the fuzzy logic reasoning. The completion of the reduction of the oxygen or nitrogen oxides stored in said exhaust gas purifying device may be determined according to the predicted value.

摘要翻译： 公开了一种具有排气系统的内燃机废气排放控制系统。 控制系统可以包括设置在排气系统中的废气净化装置和设置在废气净化装置的下游的氧浓度传感器。 废气净化装置可以至少具有氧气存储能力或氮氧化物保存能力。 供给到发动机的空气燃料混合物的空燃比可以相对于化学计量空燃比富集，以便减少存储在排气净化装置中的氧或氮氧化物。 可以使用基于模糊逻辑推理的预测器来计算氧浓度传感器的输出的预测值。 可以根据预测值来确定存储在所述废气净化装置中的氧或氮氧化物的还原的完成。

公开(公告)号：US06684150B2

公开(公告)日：2004-01-27

申请号：US10068096

申请日：2002-02-01

申请人： Yuji Yasui ,  Hiroshi Tagami ,  Yoshihisa Iwaki ,  Kunihiro Morishita

发明人： Yuji Yasui ,  Hiroshi Tagami ,  Yoshihisa Iwaki ,  Kunihiro Morishita

IPC分类号： F02D4114

CPC分类号： F02D41/1458 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1481 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/1431 ,  F02D2400/08 ,  G05B13/047

摘要： A manipulation variable generating unit 7 for generating a target air-fuel ratio KCMD to converge the output of an oxygen concentration sensor 5 disposed downstream of a catalytic converter 3 in an exhaust system E as a plant to a given target value has a plurality of estimators for generating data indicating estimated values of the output of the oxygen concentration sensor after a dead time of the exhaust system E or a total dead time which is the sum of the dead time of the exhaust system E and a dead time of a system comprising an engine control unit 8 and an internal combustion engine 1, according to respective different algorithms. The manipulation variable generating unit 7 generates the target air-fuel ratio KCMD according to an adaptive sliding mode control process using a value selected from the estimated values or a combined value representing a combination of the estimated values.

摘要翻译： 用于产生目标空燃比KCMD的操作变量产生单元7将设置在作为设备的排气系统E中的催化转化器3的下游的氧浓度传感器5的输出收敛到给定目标值，具有多个估计器 用于产生指示在排气系统E的死区时间之后的氧浓度传感器的输出的估计值的数据或作为排气系统E的死区时间与包括排气系统E的系统的死区时间之和的总死区时间 发动机控制单元8和内燃机1，根据各自的不同算法。 操作变量生成单元7根据自适应滑动模式控制处理，使用从估计值中选择的值或表示估计值的组合的组合值来生成目标空燃比KCMD。

公开(公告)号：US06636783B2

公开(公告)日：2003-10-21

申请号：US10163963

申请日：2002-06-05

申请人： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

发明人： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

IPC分类号： G05D1100

CPC分类号： F02D41/1403 ,  F02D35/0007 ,  G05B13/047 ,  G05B13/048

摘要： A control system for a throttle valve actuating device is disclosed. The throttle valve actuating device includes a throttle valve of an internal combustion engine and an actuator for actuating the throttle valve. At least one model parameter of a controlled object model which is obtained by modeling the throttle valve actuating device is calculated. A learning value of a throttle valve opening at which an actuating characteristic of the throttle valve changes, is calculated. The throttle valve actuating device is controlled using the learning value so that an opening of the throttle valve coincides with a target opening.

公开(公告)号：US06378296B1

公开(公告)日：2002-04-30

申请号：US09551209

申请日：2000-04-17

申请人： Yuji Yasui ,  Yoshihisa Iwaki ,  Masahiro Satoh

发明人： Yuji Yasui ,  Yoshihisa Iwaki ,  Masahiro Satoh

IPC分类号： F01N300

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

摘要： 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.

摘要翻译： 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：US07337772B2

公开(公告)日：2008-03-04

申请号：US10770376

申请日：2004-02-03

申请人： Yuji Yasui ,  Yoshihisa Iwaki

发明人： Yuji Yasui ,  Yoshihisa Iwaki

IPC分类号： F02D41/00 ,  B60T7/12

CPC分类号： G05D23/2401 ,  G05D23/1919 ,  G05D23/27

摘要： The temperature of an exhaust gas flowing through an exhaust passage 3 is estimated or detected, and the temperature of an active element of an exhaust gas sensor 8. (O2 sensor) is controlled at a predetermined target temperature by a heater using the estimated or detected temperature of the exhaust gas. For estimating the temperature of the exhaust gas in the vicinity of the exhaust gas sensor 8, the exhaust passage 3 extending up to the exhaust gas sensor 8 is divided into a plurality of partial exhaust passageways 3a through 3d, the temperatures of the exhaust gas in the partial exhaust passageways 3a through 3d are estimated successively from an exhaust port 2 of an engine 1. The temperature of the exhaust gas is estimated according to an algorithm which takes into account a heat transfer between the exhaust gas and passage-defining members 6a, 6b, 7 which define the exhaust passage 3 and a heat radiation from the passage-defining members into the atmosphere. A control input that is applied to the heater includes at least a component depending on the temperature of the active element of the exhaust gas sensor 8 and a component depending on the temperature of the exhaust gas. Even if the temperature of the exhaust gas changes, the temperature of the active element of the exhaust gas sensor 8 can be controlled stably at the desired temperature.

摘要翻译： 估计或检测流过排气通道3的废气的温度，以及排气传感器8的有源元件的温度。 （O 2传感器）通过使用估计或检测到的废气温度的加热器控制在预定目标温度。 为了估计排气传感器8附近的废气的温度，向废气传感器8延伸的排气通路3分为多个部分排气通路3a〜3d，排气温度 从发动机1的排气口2连续地估计局部排气通道3 a至3 d中的气体。 排气的温度根据考虑到排气和限定排气通道3的通道限定部件6a，6b，7之间的传热以及来自通道限定部件的热辐射的算法来估计 会员进入大气。 施加到加热器的控制输入至少包括取决于废气传感器8的有源元件的温度的元件和取决于废气温度的元件。 即使排气的温度变化，也能够将废气传感器8的有源元件的温度稳定地控制在期望的温度。

公开(公告)号：US07305299B2

公开(公告)日：2007-12-04

申请号：US10511540

申请日：2003-03-28

申请人： Yuji Yasui ,  Yoshihisa Iwaki

发明人： Yuji Yasui ,  Yoshihisa Iwaki

IPC分类号： F01N9/00 ,  G06F17/00

CPC分类号： F02D41/1454 ,  G01K7/42

摘要： An apparatus for controlling temperature of an exhaust gas sensor can include a temperature estimating device for sequentially estimating the temperature of an active element based on a predetermined element temperature model, which is representative of a temperature change of the active element due to heat transfer between the active element and an exhaust gas held in contact with the active element. A heater control device can control a heater to equalize the temperature of the active element with a predetermined target temperature using an estimated value of the temperature of the active element from the temperature estimating device.

摘要翻译： 用于控制排气传感器的温度的装置可以包括：温度估计装置，用于基于预定元件温度模型顺序地估计有源元件的温度，所述预定元件温度模型代表由于有源元件之间的热传递而导致的有源元件的温度变化 活性元件和与活性元件保持接触的废气。 加热器控制装置可以使用来自温度估计装置的有源元件的温度的估计值来控制加热器以使具有预定目标温度的有源元件的温度相等。

公开(公告)号：US20060129250A1

公开(公告)日：2006-06-15

申请号：US11345994

申请日：2006-02-02

申请人： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

发明人： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

IPC分类号： G05B11/01

CPC分类号： G05B13/042 ,  F02D35/0007 ,  F02D41/1403 ,  F02D41/1454 ,  F02D41/40 ,  F02D2041/1423 ,  F02D2041/143 ,  G05B13/047 ,  G05B13/048

摘要： A control system for a plant is provided. This control system can control the plant more stably, when the model parameters of the controlled object model which are obtained by modeling the plant, which is a controlled object, are identified and the sliding mode control is performed using the identified model parameters. The model parameter identifier (22) calculates a model parameter vector (θ) by adding an updating vector (dθ) to a reference vector (θbase) of the model parameter. The updating vector (dθ) is corrected by multiplying a past value of at least one element of the updating vector by a predetermined value which is greater than “0” and less than “1”. The model parameter vector (θ) is calculated by adding the corrected updating vector (dθ) to the reference vector (θbase).

摘要翻译： 提供了一种植物控制系统。 当通过对作为受控对象的设备进行建模获得的受控对象模型的模型参数被识别并且使用所识别的模型参数来执行滑动模式控制时，该控制系统可以更稳定地控制设备。 模型参数标识符（22）通过将更新向量（dθ）添加到模型参数的参考向量（tabase）来计算模型参数向量（θ）。 通过将更新向量的至少一个元素的过去值乘以大于“0”且小于“1”的预定值来校正更新向量（dθ）。 通过将校正后的更新向量（dθ）加到参考矢量（the tabase）来计算模型参数矢量（theta）。

公开(公告)号：US06904355B2

公开(公告)日：2005-06-07

申请号：US10635464

申请日：2003-08-07

申请人： Yuji Yasui ,  Yoshihisa Iwaki ,  Akihiro Shinjo

发明人： Yuji Yasui ,  Yoshihisa Iwaki ,  Akihiro Shinjo

IPC分类号： F02D45/00 ,  F01N3/24 ,  F02D41/02 ,  F02D41/14 ,  G05B13/02 ,  G05B21/02 ,  B60T7/12

CPC分类号： F02D41/1454 ,  F02D41/0235 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1431 ,  F02D2041/1432 ,  G05B13/0255 ,  G05B21/02

摘要： A vehicle controller for controlling the air-fuel ratio of an engine is provided. In one embodiment, the controller comprises a first exhaust gas sensor provided downstream of the catalyst for detecting oxygen concentration of exhaust gas, a first decimation filter connected to the first exhaust gas sensor, and a control unit connected to the first decimation filter. The control unit determines a manipulated variable for manipulating the air-fuel ratio. The first decimation filter oversamples, low-pass filters and then downsamples the output of the first exhaust gas sensor. The first decimation filter can remove chemical noise from the output of the exhaust gas sensor. In another embodiment, a second decimation filter is connected to a second exhaust gas sensor provided upstream of the catalyst for detecting the air-fuel ratio of the exhaust gas. The second decimation filter oversamples, low-pass filters and then downsamples the output of the second exhaust gas sensor. The second decimation filter can compensate the shortage of resolution of the air-fuel ratio sensor.

摘要翻译： 提供了一种用于控制发动机的空燃比的车辆控制器。 在一个实施例中，控制器包括设置在用于检测废气氧浓度的催化剂下游的第一废气传感器，连接到第一排气传感器的第一抽取滤波器和连接到第一抽取滤波器的控制单元。 控制单元确定用于操纵空燃比的操纵变量。 第一抽取滤波器过采样低通滤波器，然后对第一排气传感器的输出进行下采样。 第一抽取滤波器可以从废气传感器的输出中去除化学噪声。 在另一个实施例中，第二抽取滤波器连接到设置在用于检测排气的空燃比的催化剂上游的第二排气传感器。 第二抽取滤波器过采样低通滤波器，然后对第二排气传感器的输出进行下采样。 第二抽取滤波器可以补偿空燃比传感器的分辨率不足。