公开(公告)号：US06775608B2

公开(公告)日：2004-08-10

申请号：US10349966

申请日：2003-01-24

Applicant: Yuji Yasui

Inventor： Yuji Yasui

IPC: B60T712

CPC classification number: F02D41/1458 ,  F01N13/0097 ,  F02D41/027 ,  F02D41/126 ,  F02D41/1402 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1475 ,  F02D2041/1416 ,  F02D2041/1423 ,  F02D2041/1433

Abstract: A controller for controlling an air-fuel ratio of an engine is provided. An exhaust gas sensor is provided between an upstream catalyst disposed upstream of an exhaust pipe and a downstream catalyst disposed downstream of the exhaust pipe. A virtual exhaust gas sensor is configured downstream of the downstream catalyst. After an operating state in which the air-fuel is lean is cancelled, or after a fuel cut is cancelled, an estimated output of the virtual exhaust gas sensor is estimated based on a gas amount that contributes to reduction of the upstream and downstream catalysts and a detected output of the exhaust gas sensor provided between the upstream and downstream catalysts. The air-fuel ratio of the engine is controlled in accordance with the estimated output of the virtual exhaust gas sensor. Thus, the catalyst converter is appropriately reduced in accordance with a load of the engine and a state of the catalyst. When the reduction process is completed, an adaptive air-fuel ratio control based on the output of the exhaust gas sensor is started.

Abstract translation: 提供一种用于控制发动机的空燃比的控制器。 排气传感器设置在位于排气管上游的上游催化剂和位于排气管下游的下游催化剂​​之间。 虚拟废气传感器配置在下游催化剂​​的下游。 在消除空气燃料的操作状态被消除之后或在燃料切断被取消之后，基于有助于减少上游和下游催化剂​​的气体量估计虚拟废气传感器的估计输出，并且 设置在上游催化剂和下游催化剂​​之间的废气传感器的检测输出。 根据虚拟废气传感器的估计输出来控制发动机的空燃比。 因此，根据发动机的负荷和催化剂的状态适当地减少催化剂转化器。 当还原处理完成时，开始基于排气传感器的输出的适应性空燃比控制。

公开(公告)号：US06718922B2

公开(公告)日：2004-04-13

申请号：US10299311

申请日：2002-11-19

Applicant: Yuji Yasui

Inventor： Yuji Yasui

IPC: F01L134

CPC classification number: F01L1/34 ,  F01L1/3442 ,  F01L2820/02 ,  F02D41/1403

Abstract: A cam phase control apparatus for an internal combustion engine is provided for improving the controllability in a transient state in which an actual cam phase converges to a target cam phase to accurately and readily identify model parameters even when a mechanism for changing the actual cam phase exhibits an intense friction characteristic. The cam phase control apparatus relies on a sliding mode control algorithm which models a controlled object that receives the control input to a cam phase varying device and outputs an actual cam phase as a discrete time based model, and creates a switching function as a function of time series data of a following error. An ECU functions as a sliding mode controller for determining the control input to the cam phase varying device at a predetermined control period for converging the actual cam phase to a target cam phase.

Abstract translation: 提供一种用于内燃机的凸轮相位控制装置，用于在实际凸轮相位收敛到目标凸轮相位的过渡状态下提高可控制性，即使当用于改变实际凸轮相位的机构显示 强烈的摩擦特性。 凸轮相位控制装置依赖于滑动模式控制算法，其将接收到凸轮相位变化装置的控制输入的受控对象建模，并输出实际的凸轮相位作为基于离散时间的模型，并且创建切换功能作为 时间序列数据存在以下错误。 ECU用作滑动模式控制器，用于在用于将实际凸轮相位收敛到目标凸轮相位的预定控制周期确定对凸轮相位变化装置的控制输入。

公开(公告)号：US06668214B2

公开(公告)日：2003-12-23

申请号：US10150354

申请日：2002-05-16

Applicant: Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

Inventor： Yuji Yasui ,  Yoshihisa Iwaki ,  Jun Takahashi

IPC: G05D1100

CPC classification number: F02D35/0007 ,  F02D41/1403 ,  G05B13/047 ,  G05B13/048

Abstract: 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. The control system includes a predictor for predicting a future throttle valve opening and controls the throttle actuating device according to the throttle valve opening predicted by the predictor so that the throttle valve opening coincides with a target opening.

Abstract translation: 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。 控制系统包括用于预测未来节气门开度的预测器，并且根据由预测器预测的节气门开度控制节气门致动装置，使得节气门开度与目标开度重合。

公开(公告)号：US06389804B1

公开(公告)日：2002-05-21

申请号：US09551117

申请日：2000-04-17

Applicant: Yuji Yasui ,  Yoshihisa Iwaki ,  Tadashi Satoh ,  Masahiro Satoh

Inventor： Yuji Yasui ,  Yoshihisa Iwaki ,  Tadashi Satoh ,  Masahiro Satoh

IPC: F01N300

CPC classification number: F02D41/0072 ,  F01N3/0814 ,  F01N3/0835 ,  F01N3/0878 ,  F01N3/101 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0093 ,  F01N2550/03 ,  F01N2570/12 ,  F01N2900/0422 ,  F02D41/027 ,  F02D41/062 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1458 ,  F02D41/1459 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0614 ,  F02D2200/063 ,  F02M26/48 ,  F02M26/53 ,  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 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. Based on the fact that the HC concentration rising time interval becomes short as the adsorbent degrades and adsorption capacity decrease, the time lapse since engine starting until the detected HC concentration exceeds a predetermined level is measured and is compared with a threshold value such that the adsorbent is discriminated to be degraded if the measured time lapse is less than the threshold value, 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。 基于随着吸附剂降解和吸附容量降低，HC浓度上升时间间隔变短的事实，测量发动机起动直到检测到的HC浓度超过预定水平的时间流逝，并将其与阈值进行比较，使得吸附剂 如果测量的时间流逝小于阈值，则被鉴别为劣化，从而能够准确地提高鉴别。

公开(公告)号：US06189317B1

公开(公告)日：2001-02-20

申请号：US09411232

申请日：1999-10-04

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

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

IPC: F01N300

CPC classification number: B60W10/06 ,  B60K6/42 ,  B60K6/54 ,  F02D31/005 ,  F02D37/02 ,  F02D41/024 ,  F02P5/1506 ,  F02P5/1508 ,  Y02T10/26 ,  Y02T10/42 ,  Y02T10/46 ,  Y10S903/903 ,  Y10S903/917

Abstract: An apparatus for controlling an internal combustion engine has an amount-of-intake-air control unit for generating a command value for the opening of a flow control valve in an intake passage of the engine, which emits exhaust gases through a catalytic converter, so as to increase an amount of intake air introduced into a combustion chamber by a predetermined quantity greater when the engine operates in an idling mode after it has started to operate than when the engine operates in a normal idling mode, and controlling the opening of the flow control valve based on the generated command value, and an ignition timing control unit for controlling the ignition timing according to a feedback control process to correct the ignition timing so as to be retarded in order to converge the rotational speed of the engine to a predetermined target rotational speed while the amount of intake air is being increased. The amount-of-intake-air control unit successively acquires amount-of-heat data representing the amount of heat energy actually given to the catalytic converter by exhaust gases flowing into said catalytic converter while the amount of intake air is being increased, and corrects the command value for the opening of said flow control valve according to a feedback control process in order to converge the acquired amount-of-heat data to a predetermined target value representing an amount of heat energy to be given to said catalytic converter.

Abstract translation: 用于控制内燃机的装置具有进气量控制单元，用于产生用于通过催化转化器排放废气的发动机的进气通道中的流量控制阀的打开的指令值，因此 当发动机在开始操作之后以怠速模式操作时比在发动机以正常怠速模式操作时将引入燃烧室中的进气量增加预定量更大，并且控制流量的打开 基于所生成的指令值的控制阀，以及点火正时控制单元，用于根据反馈控制处理来控制点火正时，以校正点火正时以便将发动机的转速收敛到预定目标 进气量增加时的转速。 进气量控制单元连续地获取表示当进气量增加时流入所述催化转化器的废气实际给予催化转化器的热能量的热量数据，并且校正 用于根据反馈控制过程打开所述流量控制阀的命令值，以便将所获取的热量数据收敛到表示给予所述催化转化器的热能量的预定目标值。

公开(公告)号：US6125831A

公开(公告)日：2000-10-03

申请号：US136924

申请日：1998-08-21

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

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

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

CPC classification number: F02D41/2461 ,  F02D41/1402 ,  F02D41/1456 ,  G05B13/042 ,  F02D2041/1415 ,  F02D2041/1418 ,  F02D2041/143 ,  F02D2041/1433

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 such a manner that an output from the sensor becomes equal to a desired value, and an adaptive parameter-adjusting device for adjusting adaptive parameters used by the adaptive controller. The adaptive parameter-adjusting device has an identification error-calculating device for calculating an identification error of the adaptive parameters and generating an identification error signal indicative of the calculated identification error, and an adjusting device for adjusting the adaptive parameters based on the calculated identification error. The adaptive parameter-adjusting device includes a non-linear filter for generating an output of 0 or approximately 0 in response to the identification error signal when the identification error is within a predetermined range. The adjusting device adjusts the adaptive parameters by using the output from the non-linear filter.

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，用于控制施加到所述设备的控制的操作变量的自适应控制器，使得所述传感器的输出变得等于期望值，以及 自适应参数调整装置，用于调整自适应控制器使用的自适应参数。 自适应参数调整装置具有识别误差计算装置，用于计算自适应参数的识别误差并产生表示计算出的识别误差的识别误差信号;以及调整装置，用于基于所计算的识别误差来调整自适应参数 。 自适应参数调整装置包括非线性滤波器，用于当识别误差在预定范围内时响应于识别误差信号产生0或大约0的输出。 调节装置通过使用非线性滤波器的输出来调整自适应参数。

公开(公告)号：US6116213A

公开(公告)日：2000-09-12

申请号：US63732

申请日：1998-04-24

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

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

IPC: F02D31/00 ,  F02D41/02 ,  F02D41/06 ,  F02P5/15 ,  F02D43/00

CPC classification number: F02P5/1506 ,  F02D31/003 ,  F02D41/024 ,  F02D41/067 ,  Y02T10/26 ,  Y02T10/46

Abstract: A control system for controlling an internal combustion engine which discharge exhaust gases through an emission purifier includes a controller which increases the quantity of intake air drawn into the internal combustion engine while the internal combustion engine is idling after the internal combustion engine has started to operate, to a level which is greater by a predetermined increase than the quantity of intake air drawn into the internal combustion engine while the internal combustion engine is idling normally. The controller also generates a command value for ignition timing of the internal combustion engine according to a feedback control process to converge the rotational speed of the internal combustion engine toward a predetermined target rotational speed, and controlling the ignition timing of the internal combustion engine based on the generated command value thereby to retard the ignition timing. The controller establishes the target rotational speed by changing the target rotational speed from a preset rotational speed toward a predetermined idling speed after the rotational speed of the internal combustion engine has reached the preset rotational speed which is higher than the idling speed after the quantity of intake air drawn into the internal combustion engine has started being increased.

Abstract translation: 用于控制通过排放净化器排出废气的内燃机的控制系统包括：控制器，其在内燃机开始运转之后，在内燃机空转的同时增加吸入内燃机的进气量， 达到比内燃机正常空转时吸入内燃机的进气量大的预定增量的水平。 控制器还根据反馈控制处理产生内燃机的点火正时的指令值，以使内燃机的转速朝向预定的目标转速收敛，并且控制内燃机的点火正时基于 所产生的指令值从而延迟点火正时。 控制器通过在内燃机的旋转速度达到高于摄入量后的空转速度的预设转速之后，将目标转速从预设转速改变为预定怠速来建立目标转速 吸入内燃机的空气已经开始增加。

公开(公告)号：US5924281A

公开(公告)日：1999-07-20

申请号：US835192

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 ,  G05B13/04 ,  F01N3/00

CPC classification number: G05B13/047 ,  F02D41/1403 ,  F02D41/1441 ,  F02D41/1473 ,  F02D2041/1409 ,  F02D2041/1415 ,  F02D2041/1416 ,  F02D2041/1418 ,  F02D2041/142 ,  F02D2041/1423 ,  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 in the exhaust system for detecting an air-fuel ratio of the exhaust gas upstream of the catalytic converter, 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, and a correction quantity calculator for determining a correction quantity to correct an air-fuel ratio of the engine based on an output from the second exhaust gas sensor so as to equalize the concentration of the component of the exhaust gas downstream of the catalytic converter to a predetermined appropriate value. The air-fuel ratio of the engine is controlled based on the determined correction quantity and an output from the first exhaust gas sensor so as to converge the concentration of the component toward the predetermined appropriate value. A state predictor estimates the concentration of the component, detected by the second exhaust gas sensor, after a dead time present in an exhaust system including the catalytic converter between the first and second exhaust gas sensors, based on outputs up to present from the first and second exhaust gas sensors. The correction quantity calculator determines the air-fuel ratio of the engine so as to equalize the concentration of the component to the predetermined appropriate value, based on the estimated concentration of the component.

Abstract translation: 一种与内燃机一起使用的空燃控制系统具有：催化转化器，其设置在发动机的排气系统中，用于净化从发动机排出的排气;排气系统中的第一排气传感器， 催化转化器上游的废气的燃料比，用于检测已经通过催化转化器的排气的成分浓度的排气系统中的第二废气传感器，以及催化转化器的下游的校正量 计算器，用于基于来自第二排气传感器的输出确定校正量以校正发动机的空燃比，以将催化转化器下游的排气的成分的浓度均匀化到预定的适当值。 基于所确定的校正量和来自第一排气传感器的输出来控制发动机的空燃比，以将部件的浓度朝向预定的适当值收敛。 状态预测器基于从第一和第二废气传感器到目前的输出，在包括第一和第二废气传感器之间的催化转化器的排气系统中存在的死区时间之后，估计由第二废气传感器检测到的部件的浓度， 第二排气传感器。 校正量计算器基于所估计的组分浓度，确定发动机的空燃比，以将组分的浓度与预定的适当值相等。

公开(公告)号：US09599001B2

公开(公告)日：2017-03-21

申请号：US13358178

申请日：2012-01-25

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

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

IPC: F01N3/10 ,  F01N9/00 ,  F01N3/20 ,  F02D41/00 ,  F02D41/14 ,  F02D41/40

CPC classification number: F01N9/00 ,  F01N3/208 ,  F01N2560/026 ,  F01N2900/1402 ,  F02D41/0077 ,  F02D41/1446 ,  F02D41/146 ,  F02D41/405 ,  Y02T10/24 ,  Y02T10/44 ,  Y02T10/47

Abstract: An exhaust purification system for an internal combustion engine is provided that can maintain the NOx purification rate of a selective reduction catalyst at near the maximum thereof. The exhaust purification system is provided with an oxidation catalyst and CSF provided in the exhaust plumbing of the engine, a selective reduction catalyst that is provided in the exhaust plumbing on the downstream side of oxidation catalyst and CSF, and selectively reduces NOx in the exhaust, and a NO2 sensor that detects NO2 in the exhaust inside of the exhaust plumbing on the downstream side of the selective reduction catalyst. An ECU executes NO2-NOx ratio decrease processing to cause the NO2-NOx ratio corresponding to the ratio of NO2 to NOx in the exhaust flowing into the selective reduction catalyst to decrease, in a case of a detection value Vno2 from the NO2 sensor being greater than a predetermined value Vno2_th.

公开(公告)号：US20150211427A1

公开(公告)日：2015-07-30

申请号：US14415038

申请日：2012-07-17

Applicant: Yuji Yasui ,  Hideki Matsunaga ,  Hans Hardam ,  Toshiharu Takahashi ,  Masatoshi Yamada ,  Hiroshi Uike

Inventor： Yuji Yasui ,  Hideki Matsunaga ,  Hans Hardam ,  Toshiharu Takahashi ,  Masatoshi Yamada ,  Hiroshi Uike

IPC: F02D41/02 ,  F02D41/14

CPC classification number: F02D41/0235 ,  F01N3/2066 ,  F02D41/005 ,  F02D41/1402 ,  F02D41/1444 ,  F02D41/1456 ,  F02D2041/1423 ,  F02D2041/1431 ,  F02D2041/1433 ,  F02D2200/0802 ,  Y02T10/24 ,  Y02T10/47

Abstract: The objective of the present invention is to provide a control device for an engine that enables precise control of the equivalence ratio. The system from the fuel injection amount to the output from a LAF sensor is modeled as an injection amount-sensor output model by means of a model equation containing model parameters and a lag coefficient. The system from the equivalence ratio to the LAF sensor output is modeled as a port equivalence ratio-sensor output model by means of a model equation containing the lag coefficient. The control device is equipped with: a feedback-use identifier that successively identifies values for the model parameters; a LAF lag compensation-use identifier that successively identifies values for the lag coefficient; and a stoichiometric driving mode controller that determines the value of a fuel injection amount.

Abstract translation: 本发明的目的是提供一种能够精确控制当量比的用于发动机的控制装置。 从燃料喷射量到LAF传感器的输出的系统通过包含模型参数和滞后系数的模型方程被建模为喷射量传感器输出模型。 从等效比到LAF传感器输出的系统通过包含滞后系数的模型方程式建模为端口当量比 - 传感器输出模型。 控制装置配备有：连续地识别模型参数的值的反馈使用标识符; LAF滞后补偿使用标识符，其连续地识别滞后系数的值; 以及确定燃料喷射量的值的化学计量驱动模式控制器。