公开(公告)号：US20050252497A1

公开(公告)日：2005-11-17

申请号：US10511540

申请日：2003-03-28

Applicant: Yuji Yasui ,  Yoshihisa Iwaki

Inventor： Yuji Yasui ,  Yoshihisa Iwaki

IPC: G01N27/409 ,  F02D41/14 ,  F02D45/00 ,  G01K7/42 ,  F02D41/00 ,  G01N7/00

CPC classification number: F02D41/1454 ,  G01K7/42

Abstract: A sensor temperature control means (18) for controlling the temperature of an active element (10) of an exhaust gas sensor (O2 sensor) (8) disposed in an exhaust passage (3) estimates the temperatures of the active element (10) and a heater (13) based on an element temperature model which is representative of a temperature change of the active element due to heat transfer between the active element (10) and the heater (13) which heats the active element and heat transfer between the active element (10) and an exhaust gas, and a heater temperature model which is representative of a temperature change of the heater due to heat transfer between the active element (10) and the heater (13) and the supply of electric power to the heater (13), and controls the heater (13) to equalize the temperature of the active element (10) or the heater (13) with a predetermined target temperature using estimated values of the temperatures. It is possible to accurately estimate the temperature of the active element (10) of the exhaust gas sensor (8) or the heater (13), and control the temperature of the active element (10) of the exhaust gas sensor (8) stably at a desired temperature using an estimated value of the temperature.

Abstract translation: 用于控制设置在排气通道（3）中的排气传感器（O 2传感器）（8）的有源元件（10）的温度的传感器温度控制装置（18）估计温度 的有源元件（10）和加热器（13），其基于元件温度模型，其代表由于有源元件（10）和加热器（13）之间的热传递而导致的有源元件的温度变化， 有源元件（10）和排气之间的有源元件和热传递，以及代表加热器由于有源元件（10）和加热器（13）之间的传热引起的温度变化的加热器温度模型，以及 向加热器（13）供应电力，并且使用估计的温度值来控制加热器（13）以预定的目标温度来均衡有源元件（10）或加热器（13）的温度。 可以精确地估计排气传感器（8）或加热器（13）的有源元件（10）的温度，并且可以稳定地控制排气传感器（8）的有源元件（10）的温度 在所需温度下使用估计的温度值。

公开(公告)号：US20050203642A1

公开(公告)日：2005-09-15

申请号：US11050646

申请日：2005-02-04

Applicant: Yuji Yasui

Inventor： Yuji Yasui

IPC: F02D35/00 ,  F02D41/14 ,  G05B13/02 ,  G05B19/42 ,  G06F19/00

CPC classification number: F02D41/1401 ,  F01L1/3442 ,  F01L2001/3443 ,  F01L2800/05 ,  F02D13/0207 ,  F02D35/0007 ,  F02D41/0002 ,  F02D41/1403 ,  F02D2041/001 ,  Y10T137/2278

Abstract: The invention provides a control apparatus comprising a controller for determining a manipulated variable for manipulating a controlled object so that an output of the controlled object converges to a desired value and a modulator for modulating the manipulated variable by using one of a delta-sigma modulation algorithm, a sigma-delta modulation algorithm and a delta modulation algorithm to generate a modulated signal to be applied to the controlled object. The modulator generates the modulated signal so that a center value of an amplitude of the modulated signal follows a change of the manipulated variable. Thus, the modulated signal in which the manipulated variable is reflected without any loss can be generated even when the manipulated variable changes.

Abstract translation: 本发明提供了一种控制装置，其包括控制器，用于确定用于操纵受控对象的操纵变量，使得受控对象的输出收敛到期望值;以及调制器，用于通过使用Δ-Σ调制算法 ，Σ-Δ调制算法和Δ调制算法，以产生要施加到受控对象的调制信号。 调制器产生调制信号，使得调制信号的幅度的中心值跟随操纵变量的变化。 因此，即使当操作变量改变时，也可以产生其中操纵变量被反射而没有任何损失的调制信号。

公开(公告)号：US06920751B2

公开(公告)日：2005-07-26

申请号：US10437457

申请日：2003-05-14

Applicant: Yuji Yasui ,  Hiroshi Kitagawa

Inventor： Yuji Yasui ,  Hiroshi Kitagawa

IPC: F02D45/00 ,  F01N3/00 ,  F01N3/20 ,  F02D41/14 ,  F02D41/22 ,  G01N27/417

CPC classification number: F02D41/1495 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/1479 ,  F02D2041/1432 ,  F02D2041/288 ,  F02D2200/0404 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/501 ,  G01N27/4175

Abstract: An apparatus for detecting a failure of an exhaust gas sensor disposed downstream of a catalyst converter in an exhaust manifold is provided. The apparatus comprises a control unit. The control unit determines a ratio between an amplitude value of a first output of the exhaust gas sensor and an amplitude value of a second output of an air-fuel ratio sensor. The air fuel ratio sensor disposed upstream of the catalyst converter. The control unit detects a failure of the exhaust gas sensor based on the ratio. In one embodiment, a statistical process using a successive least squares method is applied to the ratio. The control unit detects a failure of the exhaust gas sensor based on the statistically processed ratio. In another embodiment, the statistical process is applied to both the output of the exhaust gas sensor and the output of the air-fuel ratio sensor. The control unit detects a failure of the exhaust gas sensor based on a ratio between the statistically processed outputs of the exhaust gas sensor and the air-fuel ratio sensor.

Abstract translation: 提供一种用于检测设置在排气歧管中的催化剂转化器下游的排气传感器的故障的装置。 该装置包括控制单元。 控制单元确定排气传感器的第一输出的振幅值和空燃比传感器的第二输出的振幅值之间的比率。 设置在催化剂转化器上游的空燃比传感器。 控制单元基于该比例来检测废气传感器的故障。 在一个实施例中，使用连续最小二乘法的统计过程被应用于该比率。 控制单元基于统计处理的比例来检测废气传感器的故障。 在另一个实施例中，将统计过程应用于排气传感器的输出和空燃比传感器的输出。 控制单元基于废气传感器的统计处理输出与空燃比传感器之间的比率来检测废气传感器的故障。

公开(公告)号：US06820603B2

公开(公告)日：2004-11-23

申请号：US10771323

申请日：2004-02-05

Applicant: Yuji Yasui ,  Jun Iwamoto ,  Hitoshi Takahashi ,  Hidemi Ogihara

Inventor： Yuji Yasui ,  Jun Iwamoto ,  Hitoshi Takahashi ,  Hidemi Ogihara

IPC: F02D4100

CPC classification number: F02D11/105 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D2041/0017 ,  F02D2200/0414 ,  F02D2200/602 ,  F02D2200/703 ,  F02D2250/18 ,  F02M25/00 ,  Y02T10/22

Abstract: There is provided a control system for an internal combustion engine, which is capable of meeting a driver's demand of torque, and achieving high combustion efficiency and high emission-reducing performance by a three-way catalyst in lean-burn operation in a compatible manner. The control system sets a control amount indicative of either an oxygen mass supplied to a combustion chamber or a fuel injection amount such that oxygen concentration in exhaust gases becomes equal to a value corresponding to stoichiometric combustion. A target value corresponding to a demanded torque is set based on detected engine operating conditions. A degree of opening of a main throttle valve and a degree of opening of a sub-throttle valve in a passage by passing an intake passage equipped with a nitrogen-enriching device are controlled such that the control amount becomes equal to the set target value.

Abstract translation: 提供了一种用于内燃机的控制系统，其能够满足驾驶员的扭矩需求，并且以兼容的方式在稀燃操作中通过三元催化剂实现高燃烧效率和高排放减少性能。 控制系统设定表示供给到燃烧室的氧气质量或燃料喷射量的控制量，使得废气中的氧浓度变得等于对应于化学计量燃烧的值。 基于检测到的发动机工作条件来设定与要求转矩对应的目标值。 控制通过配备有氮富集装置的进气通道的主节流阀的开度和通道中的副节流阀的开度，使得控制量变得等于设定的目标值。

公开(公告)号：US06789534B2

公开(公告)日：2004-09-14

申请号：US10720053

申请日：2003-11-25

Applicant: Yuji Yasui ,  Takahide Mizuno

Inventor： Yuji Yasui ,  Takahide Mizuno

IPC: F02D4114

CPC classification number: F02D41/0085 ,  F02D41/1402 ,  F02D41/1406 ,  F02D41/1456 ,  F02D41/2454 ,  F02D41/2477 ,  F02D2041/1416 ,  F02D2041/142 ,  F02D2041/1423 ,  F02D2041/1433 ,  G05B13/04 ,  G05B13/042 ,  G05B13/047

Abstract: An air-fuel ratio control system for an internal combustion engine is provided which is capable of appropriately and promptly correcting variation in the air-fuel ratio of a mixture between cylinders and realizing a very robust air-fuel ratio control, even with a complicated exhaust system layout. The ECU of the system for control of the air-fuel ratio of a mixture supplied to first to fourth cylinders determines a feedback correction coefficient, calculates a cylinder-by-cylinder variation coefficient indicative of variation in air-fuel ratio between the cylinders, based on a model parameter of a model having the input of the feedback correction coefficient thereto and the output of the detected air-fuel ratio, identifies the model parameter, corrects a basic fuel injection amount such that the cylinder-by-cylinder variation parameter converges to a moving average value thereof, thereby calculating a cylinder-by-cylinder final fuel injection amount.

公开(公告)号：US06367245B1

公开(公告)日：2002-04-09

申请号：US09654157

申请日：2000-09-01

Applicant: Yuji Yasui ,  Tetsuo Endo ,  Tadashi Sato ,  Shiro Takakura

Inventor： Yuji Yasui ,  Tetsuo Endo ,  Tadashi Sato ,  Shiro Takakura

IPC: F01N300

CPC classification number: F01N3/0835 ,  F01N3/0807 ,  F01N3/0814 ,  F01N3/0878 ,  F01N11/00 ,  F01N11/002 ,  F01N13/009 ,  F01N2550/03 ,  F01N2900/0422 ,  Y02T10/47

Abstract: Exhaust gas sensors or air-fuel ratio sensors for generating outputs depending on the concentration of HC are disposed respectively upstream and downstream of an HC adsorbent in an exhaust passage. When an exhaust gas emitted from an internal combustion engine is supplied to the exhaust passage to allow the HC adsorbent to adsorb HC in the exhaust gas, an amount of HC adsorbed by the HC adsorbent per unit time is determined based on the difference between outputs from the exhaust gas sensors. A deteriorated state of the HC adsorbent is evaluated by comparing the determined adsorbed amount of HC and its integrated value with a threshold set depending on a temperature or the like of the HC adsorbent.

Abstract translation: 用于根据HC浓度产生输出的排气传感器或空燃比传感器分别设置在排气通道中的HC吸附剂的上游和下游。 当从内燃机排出的排气被供给到排气通道以允许HC吸附剂吸附废气中的HC时，每单位时间吸附HC吸附剂的HC量根据来自 废气传感器。 通过将所确定的HC的吸附量与其积分值进行比较，根据HC吸附剂的温度等设定阈值来评价HC吸附剂的劣化状态。

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：US06209517B1

公开(公告)日：2001-04-03

申请号：US09411978

申请日：1999-10-04

Applicant: Yuji Yasui

Inventor： Yuji Yasui

IPC: F02M300

CPC classification number: F02D31/005 ,  F02D41/32 ,  F02D2041/1422 ,  F02P5/1508 ,  Y02T10/42 ,  Y02T10/46

Abstract: A control apparatus controls the rotational speed of an internal combustion engine by generating a command value for ignition timing of the internal combustion engine to convert an actual rotational speed of the internal combustion engine to a predetermined target rotational speed according to a feedback control process and controlling the ignition timing based on the generated command value. The feedback control process is carried out by a response designating control process capable of variably designating a rate of reduction of the difference between the actual rotational speed of the internal combustion engine and the target rotational speed with the value of a predetermined parameter in the feedback control process. The value of the predetermined parameter is variably established under a predetermined condition.

Abstract translation: 控制装置通过根据反馈控制处理生成用于内燃机的点火正时的指令值来将内燃机的实际转速转换为规定的目标转速来控制内燃机的转速， 基于生成的指令值的点火正时。 反馈控制处理通过响应指定控制处理来进行，该响应指定控制处理能够以反馈控制中的预定参数的值可变地指定内燃机的实际转速与目标转速之间的差减小的速率 处理。 在预定条件下可变地建立预定参数的值。

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：US06192311B1

公开(公告)日：2001-02-20

申请号：US09411867

申请日：1999-10-04

Applicant: Yuji Yasui ,  Masaki Ueno

Inventor： Yuji Yasui ,  Masaki Ueno

IPC: F02D4114

CPC classification number: F02D41/0002 ,  F02D41/1403 ,  F02D2041/1433 ,  G05B13/0255 ,  Y02T10/42

Abstract: A control apparatus controls an internal combustion engine by generating a command value for a manipulative quantity of a flow control valve disposed in an intake air passage of an internal combustion engine controllable by the flow control valve, according to a sliding mode control process in order to converge a predetermined control quantity relative to the internal combustion engine to a target value thereof. An object to be controlled by the sliding mode control process is modeled by a discrete system for generating the control quantity from the command value for the manipulative quantity of the flow control valve. The sliding mode control process uses a switching function constructed by a linear function composed of a plurality of time-series data of the difference between the control quantity and the target value. An algorithm for generating the command value for the manipulative quantity of the flow control valve in a predetermined control cycle according to the sliding mode control process is constructed based on the discrete-system model of the object to be controlled and the switching function.

Abstract translation: 控制装置通过根据滑动模式控制处理产生用于由可控流量控制阀配置在内燃机的进气通道中的流量控制阀的操作量的指令值，以控制内燃机，以便 将相对于内燃机的预定控制量收敛到其目标值。 通过滑动模式控制过程控制的对象由用于从流量控制阀的操作量的命令值产生控制量的离散系统建模。 滑动模式控制处理使用由由控制量和目标值之间的差的多个时间序列数据组成的线性函数构成的切换功能。 基于要控制的对象的离散系统模型和切换功能，构建根据滑动模式控制处理在预定控制周期中为流量控制阀的操作量产生命令值的算法。