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1. 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。

2. 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.

3. 发明授权

US5557933A Malfunction diagnosis apparatus for internal combustion engine 失效
标题翻译：内燃机故障诊断装置
公开(公告)号：US5557933A
公开(公告)日：1996-09-24
申请号：US302409
申请日：1994-09-08
申请人： Akihito Numata , Takashi Mukaihira , Toshio Ishii , Yutaka Takaku , Kazuya Kawano
发明人： Akihito Numata , Takashi Mukaihira , Toshio Ishii , Yutaka Takaku , Kazuya Kawano
IPC分类号： F01N3/20 , F01N11/00 , F02B77/08 , F02D41/14 , F02D41/22 , G01M15/04 , G01N27/26
CPC分类号： F02D41/1495 , F01N11/007 , F02D41/222 , F01N2550/02 , F02D2041/1432 , F02D41/0235 , F02D41/1441 , Y02T10/40 , Y02T10/47
摘要： Provided is an internal combustion engine malfunction diagnosis apparatus capable of diagnosing the deterioration of an internal combustion engine with a high accuracy and capable of diagnosing deterioration of a fluctuation factor detection section of the engine with a high accuracy in irrespective of the engine speed.According to one embodiment of the present invention, there is provided a malfunction diagnosis apparatus for an internal combustion engine comprises: a crank angle detection sensor for detecting a crank angle of the internal combustion engine; a fluctuation factor measurement means for measuring a state of a fluctuation factor of the internal combustion engine; an angular-based data sampling section for sampling data of an output signal from the fluctuation factor measurement means at a predetermined rotation angle of a crank shaft in accordance with a crank angle signal from the crank angle detection sensor; a malfunction judgement section for judging a malfunction of the internal combustion engine on the basis of data sampled by the angular-based data sampling section; a time-based data sampling section for sampling an output signal from the fluctuation factor measurement means at every lapse of a predetermined constant time; and a fluctuation factor measurement means deterioration judgement section for judging deterioration of the fluctuation factor measurement means on the basis of data sampled by the time-based data sampling section.
摘要翻译：提供一种内燃机故障诊断装置，其能够高精度地诊断内燃机的劣化，并能够高精度地诊断发动机的波动因数检测部的劣化，而与发动机转速无关。根据本发明的一个实施例，提供了一种用于内燃机的故障诊断装置，包括：用于检测内燃机的曲柄角的曲柄角检测传感器; 用于测量内燃机的波动因数的状态的波动因数测量装置; 基于角度的数据采样部分，根据来自曲柄角检测传感器的曲柄角信号，以曲轴的预定旋转角度对来自波动因数测量装置的输出信号的数据进行采样; 故障判断部，根据由基于角度的数据取样部取样的数据，判定内燃机的故障; 时间数据采样部分，用于在每个经过预定的恒定时间时对来自波动因数测量装置的输出信号进行采样; 以及波动因数测量单元，根据由基于时间的数据采样单元采样的数据，判断波动因数测量单元的劣化。

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

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。

6. 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。

7. 发明授权

US06343466B1 System for diagnosing deterioration of catalyst 失效
标题翻译：诊断催化剂劣化的系统
公开(公告)号：US06343466B1
公开(公告)日：2002-02-05
申请号：US09610106
申请日：2000-07-05
申请人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
发明人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
IPC分类号： F01N310
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/025 , F01N2560/06 , F01N2560/14 , F02D41/1441 , F02D41/1446 , F02D41/1454 , F02D41/22 , F02D2041/1415 , F02D2200/0802 , Y02T10/47
摘要： A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst is estimated using the operating-state signal (for example, the flow rate of intake air or the width of a fuel injection pulse) of the engine by a diagnostic device. The conversion efficiency of the catalyst calculated from the outputs of oxygen sensors is corrected using the estimated temperature by the diagnostic device. The deterioration state of the catalyst is diagnosed on the basis of the corrected temperature by the diagnostic device.
摘要翻译：用于清洁内燃机的排气的催化转化器中的催化剂的劣化状态的诊断精度提高的诊断系统，而不会导致成本上升。使用诊断装置的发动机的运转状态信号（例如，进气的流量或燃料喷射脉冲的宽度）来估计催化剂的温度。由氧传感器的输出计算的催化剂的转化效率使用诊断装置的估计温度进行校正。基于诊断装置的校正温度来诊断催化剂的劣化状态。

8. 发明申请

US20060168946A1 System for diagnosing deterioration of catalyst 失效
公开(公告)号：US20060168946A1
公开(公告)日：2006-08-03
申请号：US11391479
申请日：2006-03-29
申请人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
发明人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
IPC分类号： F01N3/00
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/025 , F01N2560/06 , F01N2560/14 , F02D41/1441 , F02D41/1446 , F02D41/1454 , F02D41/22 , F02D2041/1415 , F02D2200/0802 , Y02T10/47
摘要： A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst is estimated using the operating-state signal (for example, the flow rate of intake air or the width of a fuel injection pulse) of the engine by a diagnostic device. The conversion efficiency of the catalyst calculated from the outputs of oxygen sensors is corrected using the estimated temperature by the diagnostic device. The deterioration state of the catalyst is diagnosed on the basis of the corrected temperature by the diagnostic device.

9. 发明授权

US07424801B2 System for diagnosing deterioration of catalyst 失效
标题翻译：诊断催化剂劣化的系统
公开(公告)号：US07424801B2
公开(公告)日：2008-09-16
申请号：US11391479
申请日：2006-03-29
申请人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
发明人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
IPC分类号： F01N3/00
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/025 , F01N2560/06 , F01N2560/14 , F02D41/1441 , F02D41/1446 , F02D41/1454 , F02D41/22 , F02D2041/1415 , F02D2200/0802 , Y02T10/47
摘要： A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst is estimated using the operating-state signal (for example, the flow rate of intake air or the width of a fuel injection pulse) of the engine by a diagnostic device. The conversion efficiency of the catalyst calculated from the outputs of oxygen sensors is corrected using the estimated temperature by the diagnostic device. The deterioration state of the catalyst is diagnosed on the basis of the corrected temperature by the diagnostic device.
摘要翻译：用于清洁内燃机的排气的催化转化器中的催化剂的劣化状态的诊断精度提高的诊断系统，而不会导致成本上升。使用诊断装置的发动机的运转状态信号（例如，进气的流量或燃料喷射脉冲的宽度）来估计催化剂的温度。由氧传感器的输出计算的催化剂的转化效率使用诊断装置的估计温度进行校正。基于诊断装置的校正温度来诊断催化剂的劣化状态。

10. 发明授权

US5649420A System for diagnosing deterioration of catalyst 失效
标题翻译：诊断催化剂劣化的系统
公开(公告)号：US5649420A
公开(公告)日：1997-07-22
申请号：US663942
申请日：1996-06-14
申请人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
发明人： Takashi Mukaihira , Toshio Ishii , Kiyoshi Miura , Kazuya Kawano
IPC分类号： F01N3/20 , F01N7/00 , F01N9/00 , F01N11/00 , F02D41/14 , F02D41/22 , F02D45/00
CPC分类号： F01N9/005 , F01N11/00 , F01N11/002 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2560/025 , F01N2560/06 , F01N2560/14 , F02D2041/1415 , F02D2200/0802 , F02D41/1441 , F02D41/1446 , F02D41/1454 , F02D41/22 , Y02T10/47
摘要： A diagnostic system in which the accuracy of the diagnosis of the deterioration state of a catalyst in a catalytic converter for cleaning the exhaust gas of an internal combustion engine is enhanced without incurring a rise in cost. The temperature of the catalyst is estimated using the operating-state signal (for example, the flow rate of intake air or the width of a fuel injection pulse) of the engine by a diagnostic device. The conversion efficiency of the catalyst calculated from the outputs of oxygen sensors is corrected using the estimated temperature by the diagnostic device. The deterioration state of the catalyst is diagnosed on the basis of the corrected temperature by the diagnostic device.
摘要翻译：用于清洁内燃机的排气的催化转化器中的催化剂的劣化状态的诊断精度提高的诊断系统，而不会导致成本上升。使用诊断装置的发动机的运转状态信号（例如，进气的流量或燃料喷射脉冲的宽度）来估计催化剂的温度。由氧传感器的输出计算的催化剂的转化效率使用诊断装置的估计温度进行校正。基于诊断装置的校正温度来诊断催化剂的劣化状态。

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