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1. 发明授权

US06305361B1 Evaporative system and method of diagnosing same 失效
标题翻译：蒸发系统及诊断方法
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。

2. 发明授权

US6105556A Evaporative system and method of diagnosing same 失效
标题翻译：蒸发系统及其诊断方法
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。

3. 发明授权

US5341642A System for diagnosing engine exhaust gas purifying device and system for diagnosing sensor 失效
标题翻译：用于诊断发动机废气净化装置的系统和用于诊断传感器的系统
公开(公告)号：US5341642A
公开(公告)日：1994-08-30
申请号：US994344
申请日：1992-12-21
申请人： Nobuo Kurihara , Toshio Ishii , Takashi Mukaihira , Kazuya Kawano , Yutaka Takaku
发明人： Nobuo Kurihara , Toshio Ishii , Takashi Mukaihira , Kazuya Kawano , Yutaka Takaku
IPC分类号： F01N3/20 , F01N11/00 , F02D41/14 , F02D45/00 , G01M15/10 , F01N3/28
CPC分类号： G01M15/104 , F01N11/007 , F01N2550/02 , Y02T10/47
摘要： A system which is capable of diagnosing the deterioration condition of an engine exhaust gas purifying device has front and rear air/fuel ratio sensors for detecting the air/fuel ratio of the exhaust gas upstream and downstream of the catalyst, an autocorrelation function calculation for calculating the autocorrelation function .phi.xx of an output signal from the front air/fuel ratio sensor to output the maximum values (.phi.xx)max of the autocorrelation function .phi.xx at predetermined intervals, each maximum value (.phi.xx)max being in each of the predetermined intervals. A cross-correlation function calculator calculates the cross-correlation function .phi.xy between the output signals from the front and rear air/fuel ratio sensors to output the maximum values (.phi.xy)max of the mutual correlation function .phi.xy at predetermined intervals, each maximum value (.phi.xy)max being in each of the predetermined intervals therefore. The ratios between the maximum values (.phi.xy)max and (.phi.xx)max (successive deterioration index .PHI..sub.i) are calculated to determine the deterioration condition of the catalyst by comparing the ratio with a predetermined reference value.
摘要翻译：能够诊断发动机废气净化装置的劣化状态的系统具有前后空气/燃料比传感器，用于检测催化剂上游和下游的排气的空燃比，计算自相关函数输出来自前方空气/燃料比传感器的输出信号的自相关函数phi xx，以预定间隔输出自相关函数phi xx的最大值（phi xx）max，每个最大值（phi xx）max分别为预定间隔。互相关函数计算器计算来自前后空气/燃料比传感器的输出信号之间的互相关函数phi xy，以预定间隔输出相互关联函数phi xy的最大值（phi xy）max，每个因此，在每个预定间隔中的最大值（phi xy）max。计算最大值（phi xy）max和（phi xx）max（连续劣化指数PHI i）之间的比率，以通过将比率与预定参考值进行比较来确定催化剂的劣化条件。

4. 发明授权

US6085132A Control method and apparatus for diagnosing vehicles 失效
标题翻译：用于诊断车辆的控制方法和装置
公开(公告)号：US6085132A
公开(公告)日：2000-07-04
申请号：US187529
申请日：1998-11-06
申请人： Toshio Ishii , Takashi Mukaihira , Yutaka Takaku , Kazuya Kawano , Kiyoshi Miura
发明人： Toshio Ishii , Takashi Mukaihira , Yutaka Takaku , Kazuya Kawano , Kiyoshi Miura
IPC分类号： F01N3/20 , B60W50/02 , F01N3/22 , F02D17/04 , F02D41/14 , F02D41/16 , F02D41/18 , F02D41/22 , F02D41/26 , F02D43/00 , F02D45/00 , F02M25/07 , F02M25/08 , F02P5/15 , G06F7/00
CPC分类号： F02D41/266 , F02D41/22 , B60W2050/021 , F02D2041/227
摘要： A diagnostic and control system first checks the current operation status of the vehicle engine, when a malfunction or abnormal condition is detected by diagnostic sensors. A selection of optimum corrective measures is then made and carried out taking into account the safety of the vehicle, based on current operational status of the engine. For this purpose, a set of prioritized corrective measures is determined beforehand for each of the individual monitored items, according to detected changes in the engine operating status. The individual control measures are selected considering the safety of the vehicle, possible measures to correct the malfunction, assuring vehicle operability, and maintaining appropriate engine operating parameters such as exhaust gas mixture, fuel consumption and the like.
摘要翻译：当诊断传感器检测到故障或异常情况时，诊断和控制系统首先检查车辆发动机的当前运行状态。然后根据发动机的当前运行状态，考虑到车辆的安全性，进行最佳的纠正措施的选择。为此，根据检测到的发动机运行状态的变化，预先确定针对每个被监视项目的一组优先排序的校正措施。考虑到车辆的安全性，可能的措施来纠正故障，确保车辆的可操作性以及维持诸如废气混合物，燃料消耗等的适当的发动机操作参数，来选择单独的控制措施。

5. 发明授权

US5964811A Control method and apparatus for diagnosing vehicles 失效
公开(公告)号：US5964811A
公开(公告)日：1999-10-12
申请号：US877857
申请日：1997-04-18
申请人： Toshio Ishii , Takashi Mukaihira , Yutaka Takaku , Kazuya Kawano , Kiyoshi Miura
发明人： Toshio Ishii , Takashi Mukaihira , Yutaka Takaku , Kazuya Kawano , Kiyoshi Miura
IPC分类号： F01N3/20 , B60W50/02 , F01N3/22 , F02D17/04 , F02D41/14 , F02D41/16 , F02D41/18 , F02D41/22 , F02D41/26 , F02D43/00 , F02D45/00 , F02M25/07 , F02M25/08 , F02P5/15 , G06G7/76
CPC分类号： F02D41/266 , F02D41/22 , B60W2050/021 , F02D2041/227
摘要： A diagnostic and control system first checks the current operation status of the vehicle engine, when a malfunction or abnormal condition is detected by diagnostic sensors. A selection of optimum corrective measures is then made and carried out taking into account the safety of the vehicle, based on current operational status of the engine. For this purpose, a set of prioritized corrective measures is determined beforehand for each of the individual monitored items, according to detected changes in the engine operating status. The individual control measures are selected considering the safety of the vehicle, possible measures to correct the malfunction, assuring vehicle operability, and maintaining appropriate engine operating parameters such as exhaust gas mixture, fuel consumption and the like.

6. 发明授权

US6050087A Method and apparatus for diagnosing engine exhaust gas purification system 失效
标题翻译：用于诊断发动机废气净化系统的方法和装置
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。

7. 发明授权

US06523340B1 Method and apparatus for diagnosing engine exhaust gas purification system 失效
标题翻译：用于诊断发动机废气净化系统的方法和装置
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。

8. 发明授权

US06725709B2 Combustion state diagnosing system and combustion state diagnosing method for diagnosing engine and recording medium 失效
标题翻译：用于诊断发动机和记录介质的燃烧状态诊断系统和燃烧状态诊断方法
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。

9. 发明授权

US5802843A Method and apparatus for diagnosing engine exhaust gas purification system 失效
标题翻译：用于诊断发动机废气净化系统的方法和装置
公开(公告)号：US5802843A
公开(公告)日：1998-09-08
申请号：US386659
申请日：1995-02-10
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
CPC分类号： F01N9/005 , F01N11/005 , F01N11/007 , F01N2550/02 , F02D2200/0804 , 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. 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。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。

10. 发明授权

US5575265A Diagnostic method for evaporated fuel gas purging system 失效
标题翻译：蒸发燃气净化系统的诊断方法
公开(公告)号：US5575265A
公开(公告)日：1996-11-19
申请号：US507562
申请日：1995-07-26
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： F02M25/08 , F02M33/02 , F02D41/22
CPC分类号： F02M25/0809 , F02D2200/0606
摘要： In an evaporated fuel gas purging system, an accurate diagnosis can be realized by providing a reference leakage apparatus (a gauge) having a preset amount of leakage, by intentionally causing a known leakage using the gauge means under the same condition of diagnosing a leakage, and by comparing the pressure change with the pressure change in using the reference leakage apparatus. In the process of diagnosing leakage by depressurizing or pressurizing and closing the inside of the evaporated fuel gas purging system so as to leave it under presence of pressure differences to the atmospheric pressure and then by detecting the pressure change, a difference occurs in the pressure changes inside the evaporated fuel gas purging system between when the gauge is opened and closed. Then sensitivity of the difference in the pressure changes to the leakage is improved under the condition during diagnosis such as fuel temperature, atmospheric pressure, amount of remaining fuel, fuel properties and so on. The accuracy of leakage diagnosis of the evaporated fuel gas purging system can be improved by removing the effect of evaporation of the fuel inside the tank.
摘要翻译：在蒸发的燃料气体净化系统中，通过在相同的诊断泄漏的条件下，通过设置具有预设泄漏量的参考泄漏装置（量规），通过有意地使用计量装置有意地导致已知泄漏，可以实现准确的诊断，并且通过在使用参考泄漏装置时比较压力变化与压力变化。在通过对蒸发的燃料气体净化系统的内部进行减压或加压和关闭来诊断泄漏的过程中，使其在与大气压力的压力差的存在下离开，然后通过检测压力变化，在压力变化中发生差异在蒸发燃料气体清洗系统之间，当量规打开和关闭时。在燃料温度，大气压，剩余燃料量，燃料特性等诊断条件下，压力变化对泄漏的敏感度提高。通过消除罐内燃料蒸发的影响，可以提高蒸发燃料气体净化系统的泄漏诊断准确度。

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