公开(公告)号：US5605132A

公开(公告)日：1997-02-25

申请号：US570244

申请日：1995-12-11

申请人： Toshio Hori ,  Takeshi Atago ,  Nobuo Kurihara ,  Hiroshi Kimura ,  Kimio Hoshi

发明人： Toshio Hori ,  Takeshi Atago ,  Nobuo Kurihara ,  Hiroshi Kimura ,  Kimio Hoshi

IPC分类号： F02D41/14 ,  F02D41/04 ,  F02P5/15

CPC分类号： F02D41/1498 ,  F02D2200/1015

摘要： An engine control method and apparatus wherein a combustion state in each cylinder of an internal combustion engine is detected based on the fluctuation the rotating angular speed of an engine. A correction control is performed to make the combustion states in each of the cylinders uniform, followed by the base value for the purpose of correction control is obtained when the fluctuation in the rotating angular speed is small.

摘要翻译： 一种发动机控制方法和装置，其中基于发动机的旋转角速度的波动来检测内燃机的每个气缸中的燃烧状态。 执行校正控制以使每个气缸中的燃烧状态均匀，然后当旋转角速度的波动小时，获得用于校正控制的基值。

公开(公告)号：US5678520A

公开(公告)日：1997-10-21

申请号：US603343

申请日：1996-02-20

申请人： Toshio Hori ,  Yoshihiko Akagi ,  Nobuo Kurihara ,  Hiroshi Kimura

发明人： Toshio Hori ,  Yoshihiko Akagi ,  Nobuo Kurihara ,  Hiroshi Kimura

IPC分类号： F02D45/00 ,  F02D41/04 ,  F02D41/14 ,  G01M15/11 ,  G05B11/36 ,  F02P5/06

CPC分类号： F02D41/1498 ,  G01M15/11 ,  F02D2041/288 ,  F02D2200/0612 ,  F02D2200/1015

摘要： An engine control unit is configured to detect the revolution of an engine and to obtain the intensity of both the first order component of revolution for every combustion (one cycle per combustion) and the second order component of revolution. The second order is twice as much as the first order component. The unit further obtains dispersion or deviation in these intensities. Thereby, it is possible to detect combustion conditions and to correct them to desirable conditions.

摘要翻译： 发动机控制单元被配置为检测发动机的转速，并且获得用于每次燃烧（每个燃烧一个循环）和二次旋转分量的一阶旋转分量的强度。 第二级是第一级分量的两倍。 该单元进一步获得这些强度的色散或偏差。 因此，可以检测燃烧条件并将其校正为期望的条件。

公开(公告)号：US5447137A

公开(公告)日：1995-09-05

申请号：US128137

申请日：1993-09-29

申请人： Seiji Asano ,  Takeshi Atago ,  Nobuo Kurihara

发明人： Seiji Asano ,  Takeshi Atago ,  Nobuo Kurihara

IPC分类号： F02D41/14 ,  F02D45/00 ,  F02P17/12 ,  F02D41/00

CPC分类号： F02D41/1498 ,  F02D41/1475 ,  F02D41/2454 ,  F02D2200/1015

摘要： A control device for an internal combustion engine capable of conducting lean burn control, such as exhaust gas emission control, always optimally regardless of a timewise change of the internal combustion engine, variations in engines, and an environmental change. The control device includes a detector for detecting a burn condition of the internal combustion engine, a lean limit air-fuel ratio factor map, a lean burn feedback logic, an oxygen concentration sensor, and a feedback control logic for controlling an air-fuel ratio to a theoretical air-fuel ratio, wherein lean burn is performed at the middle point between the lean limit air-fuel ratio and the theoretical air-fuel ratio.

摘要翻译： 无论内燃机的时间变化，发动机的变化和环境变化如何，能够始终最佳地进行能够进行稀燃控制的排气控制的内燃机的控制装置。 控制装置包括用于检测内燃机的燃烧状况的检测器，稀薄极限空燃比因子图，稀燃反馈逻辑，氧浓度传感器和用于控制空燃比的反馈控制逻辑 达到理论空燃比，其中在稀薄极限空燃比和理论空燃比之间的中点进行稀燃。

公开(公告)号：US5050562A

公开(公告)日：1991-09-24

申请号：US295820

申请日：1989-01-11

申请人： Junichi Ishii ,  Matsuo Amano ,  Nobuo Kurihara ,  Takeshi Atago ,  Junichi Makino

发明人： Junichi Ishii ,  Matsuo Amano ,  Nobuo Kurihara ,  Takeshi Atago ,  Junichi Makino

IPC分类号： F02B1/04 ,  F02D41/14

CPC分类号： F02D41/2454 ,  F02B1/04 ,  F02D41/2441 ,  F02D41/248

摘要： A car control apparatus in which correction characteristics indicating whether or not various control constants are proper or not are calculated through loop control of one of the car's operation parameters, such as the air-fuel ratio, on the basis of the air-fuel ratio correction factors subjected to learning to thereby rationalize the control constants such as the fundamental injection time so as to realize proper fuel injection and proper ignition timing control.

公开(公告)号：US4991102A

公开(公告)日：1991-02-05

申请号：US215815

申请日：1988-07-06

申请人： Masahide Sakamoto ,  Takeshi Atago ,  Junichi Ishii ,  Matsuo Amano ,  Nobuo Kurihara

发明人： Masahide Sakamoto ,  Takeshi Atago ,  Junichi Ishii ,  Matsuo Amano ,  Nobuo Kurihara

IPC分类号： F02B1/04 ,  F02D41/14 ,  F02D41/24

CPC分类号： F02D41/2454 ,  F02D41/2467 ,  F02B1/04

摘要： An engine control system is disclosed in which the air-fuel ratio is controlled by feedback in accordance with the oxygen concentration detected of the exhaust gas, and a feedback control system thereof separate learning compensation values for compensating for the changes of the input/output characteristics of an air flow meter and a fuel injector respectively. The engine control system comprises a device for detecting the engine intake air flow, a device for detecting the engine speed, a device for detecting the oxygen concentration of the exhaust gas, a device for calculating the error between actual and target air-fuel ratios from the oxygen concentration of the exhaust gas, a device for learning the changes in the input/output characteristics of the intake air flow, a detection device to determine a first compensation factor corresponding to the changes in the input/output characteristics thereof, a device for learning the changes in the input/output characteristics of the fuel injection device to determine a second compensation factor corresponding to the changes in the input/output characteristics thereof, a device for calculating a basic fuel injection amount from the first compensation factor, the engine speed and the intake air amount, a device for calculating a required fuel flow rate reducing the air-fuel ratio error from the basic fuel injection amount, the second compensation factor and the air-fuel ratio error, a device for generating a drive signal indicating the required fuel flow rate, and the device for injecting fuel into the intake air path in the engine in response to the drive signal indicating the required fuel flow rate.

摘要翻译： 公开了一种发动机控制系统，其中通过根据排气检测到的氧气浓度的反馈来控制空燃比，并且其反馈控制系统分离用于补偿输入/输出特性的变化的学习补偿值 的空气流量计和燃料喷射器。 发动机控制系统包括用于检测发动机进气流量的装置，用于检测发动机转速的装置，用于检测排气的氧气浓度的装置，用于计算实际和目标空燃比之间的误差的装置， 排气的氧浓度，用于学习进气流的输入/输出特性的变化的装置，确定与其输入/输出特性的变化相对应的第一补偿因数的检测装置，用于 学习燃料喷射装置的输入/输出特性的变化，以确定与其输入/输出特性的变化相对应的第二补偿因子，用于从第一补偿因数计算基本燃料喷射量的装置，发动机转速 和进气量，用于计算所需燃料流量从基本上降低空燃比误差的装置 燃料喷射量，第二补偿系数和空燃比误差，用于产生指示所需燃料流量的驱动信号的装置，以及用于响应于驱动信号将燃料喷射到发动机的进气通道中的装置 指示所需的燃料流量。

公开(公告)号：US06305361B1

公开(公告)日：2001-10-23

申请号：US09538273

申请日：2000-03-30

申请人： Yutaka Takaku ,  Toshio Ishii ,  Kazuya Kawano ,  Nobuo Kurihara ,  Hiroshi Kimura ,  Kiyoshi Miura

发明人： Yutaka Takaku ,  Toshio Ishii ,  Kazuya Kawano ,  Nobuo Kurihara ,  Hiroshi Kimura ,  Kiyoshi Miura

IPC分类号： F02M3302

CPC分类号： F02M25/0809

摘要： There is disclosed a leakage diagnosis of an evaporative system in an internal combustion engine, and more particularly there is disclosed an evaporative system in which a more accurate leakage diagnosis can be effected using a change in the pressure in the evaporative system, and such a diagnosis method is also disclosed. The evaporative system includes a gauge line having a gauge valve, which gauge line branches off from an evaporative gas line or an evaporative gas purge line, and communicates with a point upstream of an engine throttle valve or with the ambient atmosphere, a pressure sensor for detecting the pressure in the evaporative system, and a purge valve. A leakage diagnosis of this system is effected based on detected values of the pressure sensor obtained by opening and closing the purge valve and the gauge valve. Therefore, accurate results of the diagnosis can be obtained.

摘要翻译： 公开了内燃机中的蒸发系统的泄漏诊断，更具体地，公开了一种蒸发系统，其中可以使用蒸发系统中的压力变化来实现更准确的泄漏诊断，并且这种诊断 还公开了方法。 蒸发系统包括具有计量阀的计量管，该计量管从蒸发气体管线或蒸发气体吹扫管线分支，并与发动机节气门或与大气环境的上游点连通，压力传感器用于 检测蒸发系统中的压力和净化阀。 基于通过打开和关闭吹扫阀和量规阀获得的压力传感器的检测值来实现该系统的泄漏诊断。 因此，可以获得准确的诊断结果。

公开(公告)号：US6050087A

公开(公告)日：2000-04-18

申请号：US109171

申请日：1998-07-02

申请人： Nobuo Kurihara ,  Hiroshi Kimura ,  Yutaka Takaku ,  Toshio Ishii

发明人： Nobuo Kurihara ,  Hiroshi Kimura ,  Yutaka Takaku ,  Toshio Ishii

IPC分类号： F02D45/00 ,  F01N3/20 ,  F01N9/00 ,  F01N11/00 ,  F02D41/14 ,  F01N3/00

CPC分类号： F01N9/005 ,  F01N11/005 ,  F01N11/007 ,  F01N2550/02 ,  F02D2200/0804 ,  Y02T10/47

摘要： A diagnosis apparatus for diagnosing a catalystic converter of a motor vehicle as to whether the catalyst suffers deterioration by estimating a temperature of the catalyst or that of the exhaust gas in the vicinity of the catalyst on the basis of a plurality of engine parameters to thereby decide deterioration of the catalyst by using as an index the estimated temperature. The apparatus includes a unit for estimating the temperature of the catalyst in a steady state by making use of an engine speed and an engine load which represent typical parameters employed in fuel injection control of the engine. The steady-state temperature facility is realized by storing the engine speeds and the engine loads obtained experimentally in the steady state operation of the engine in the form of a two-dimensional data map. A unit for correcting the estimated temperature of the catalyst in the transient state is provided for correcting the catalyst temperature determined by the steady-state catalyst temperature estimating unit to thereby ensure correct estimation of the catalyst temperature even in the course of operation of the motor vehicle. In the transient temperature estimating unit, non-linear characteristics are each described by combining a plurality of linear characteristics. A unit for estimating the temperature of the catalyst on the basis of the value determined by the steady-state temperature estimating unit and the transient-state temperature estimating unit is provided to decide deterioration of the catalyst.

摘要翻译： 一种用于诊断机动车辆的催化剂转化器的诊断装置，其基于多个发动机参数来估计催化剂的温度或者催化剂附近的排气的温度，从而决定催化剂是否发生劣化 通过使用估计温度作为指标，催化剂的劣化。 该装置包括用于通过利用表示在发动机的燃料喷射控制中使用的典型参数的发动机转速和发动机负荷来估计稳定状态下的催化剂的温度的单元。 稳态温度设备通过将发动机转速和实验获得的发动机负载以二维数据图的形式存储在发动机的稳态运行中来实现。 提供用于校正催化剂在过渡状态下的估计温度的单元，用于校正由稳态催化剂温度估计单元确定的催化剂温度，从而即使在机动车辆的操作过程中也能够正确地估计催化剂温度 。 在瞬态温度估计单元中，通过组合多个线性特性来分别描述非线性特性。 提供基于由稳态温度推定单元和瞬态温度推定单元确定的值来估计催化剂温度的单元，以确定催化剂的劣化。

公开(公告)号：US06523340B1

公开(公告)日：2003-02-25

申请号：US09499456

申请日：2000-02-07

申请人： Nobuo Kurihara ,  Hiroshi Kimura ,  Yutaka Takaku ,  Toshio Ishii

发明人： Nobuo Kurihara ,  Hiroshi Kimura ,  Yutaka Takaku ,  Toshio Ishii

IPC分类号： F01N300

CPC分类号： F01N11/005 ,  F01N2550/02 ,  Y02T10/47

摘要： A diagnosis apparatus for diagnosing a catalytic converter of a motor vehicle as to whether the catalyst suffers deterioration by estimating a temperature of the catalyst or that of the exhaust gas in the vicinity of the catalyst on the basis of a plurality of engine parameters to thereby decide deterioration of the catalyst by using as an index the estimated temperature. Diagnosing method and apparatus capable of diagnosing deterioration of the catalyst with a high reliability are realized.

摘要翻译： 一种用于诊断机动车辆的催化转化器的诊断装置，其特征在于，基于多个发动机参数，通过估计催化剂的温度或催化剂附近的排气的温度来判定催化剂是否发生劣化，从而决定 通过使用估计温度作为指标，催化剂的劣化。 实现能够高可靠性地诊断催化剂劣化的诊断方法和装置。

公开(公告)号：US06725709B2

公开(公告)日：2004-04-27

申请号：US10000356

申请日：2001-12-05

申请人： Yutaka Takaku ,  Toshio Ishii ,  Nobuo Kurihara ,  Hiroshi Kimura

发明人： Yutaka Takaku ,  Toshio Ishii ,  Nobuo Kurihara ,  Hiroshi Kimura

IPC分类号： G01M1900

CPC分类号： G01M15/11

摘要： A combustion state is diagnoses by extracting specific rotation period component of a period synchronous with rotation from a combustion state parameter for at least two rotations. The combustion state is judged on the basis of the extracted specific rotation period component. The combustion state parameter may be the engine speed or the output torque of a multiple-cylinder engine which varies according to the combustion state of the engine.

摘要翻译： 通过从用于至少两次旋转的燃烧状态参数提取与旋转同步的周期的特定旋转周期分量来诊断燃烧状态。 基于所提取的特定旋转周期分量来判断燃烧状态。 燃烧状态参数可以是根据发动机的燃烧状态而变化的多缸发动机的发动机转速或输出转矩。

公开(公告)号：US6105556A

公开(公告)日：2000-08-22

申请号：US784918

申请日：1997-01-16

申请人： Yutaka Takaku ,  Toshio Ishii ,  Kazuya Kawano ,  Nobuo Kurihara ,  Hiroshi Kimura ,  Kiyoshi Miura

发明人： Yutaka Takaku ,  Toshio Ishii ,  Kazuya Kawano ,  Nobuo Kurihara ,  Hiroshi Kimura ,  Kiyoshi Miura

IPC分类号： G01M3/26 ,  F02M25/08 ,  F02M37/00 ,  F02M33/02

CPC分类号： F02M25/0809

摘要： There is disclosed a leakage diagnosis of an evaporative system in an internal combustion engine, and more particularly there is disclosed an evaporative system in which a more accurate leakage diagnosis can be effected using a change in the pressure in the evaporative system, and such a diagnosis method is also disclosed. The evaporative system includes a gauge line having a gauge valve, which gauge line branches off from an evaporative gas line or an evaporative gas purge line, and communicates with a point upstream of an engine throttle valve or with the ambient atmosphere, a pressure sensor for detecting the pressure in the evaporative system, and a purge valve. A leakage diagnosis of this system is effected based on detected values of the pressure sensor obtained by opening and closing the purge valve and the gauge valve. Therefore, accurate results of the diagnosis can be obtained.

摘要翻译： 公开了内燃机中的蒸发系统的泄漏诊断，更具体地，公开了一种蒸发系统，其中可以使用蒸发系统中的压力变化来实现更准确的泄漏诊断，并且这种诊断 还公开了方法。 蒸发系统包括具有计量阀的计量管，该计量管从蒸发气体管线或蒸发气体吹扫管线分支，并与发动机节气门或与大气环境的上游点连通，压力传感器用于 检测蒸发系统中的压力和净化阀。 基于通过打开和关闭吹扫阀和量规阀获得的压力传感器的检测值来实现该系统的泄漏诊断。 因此，可以获得准确的诊断结果。