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    Evaluating method for no eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor
    1.
    发明申请
    Evaluating method for no eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor 审中-公开
    无消除催化剂的评价方法，评价装置及其效率控制方法

    公开(公告)号：US20050060986A1

    公开(公告)日：2005-03-24

    申请号：US10986140

    申请日：2004-11-12

    申请人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    发明人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    IPC分类号： B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  F01N3/00 ,  F01N3/10 ,  F01N7/00

    CPC分类号： F02D41/0235 ,  B01D53/8696 ,  B01D53/9495 ,  F01N11/007 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47 ,  Y10T436/177692 ,  Y10T436/20 ,  Y10T436/206664 ,  Y10T436/208339 ,  Y10T436/21

    摘要： In order to prevent a catalyst for an internal combustion engine from decreasing efficiency by deterioration after long time use of the catalyst, the decreased efficiency of the catalyst is determined, and the internal engine is controlled based on results of the determination so as to maintain high efficiency of the catalyst. The catalyst is installed in an exhaust pipe of the engine. Sensors for detecting conditions of exhaust gas both at upstream side and downstream side of the catalyst are provided, respectively. As for the sensor, for example, an oxygen sensor of which output varies stepwise at λ=1, or a sensor of which output varies in proportion to air-fuel ratio can be used. Detected values of the sensors are taken into a control unit, eliminating efficiency and deteriorating degree of the catalyst are estimated by comparison of the detected values, and the engine is controlled so that the eliminating efficiency becomes maximum. In accordance with the present invention, a preferable exhaust gas cleaning characteristics of the catalyst can be maintained because the decreased efficiency of the catalyst is determined exactly and the engine is controlled so as to prevent the catalyst from decreasing efficiency.

    摘要翻译： 为了防止内燃机的催化剂长时间使用催化剂后的劣化而降低效率，确定催化剂的效率降低，并且根据测定结果来控制内部发动机以保持高 催化剂的效率。 催化剂安装在发动机的排气管中。 分别提供用于检测催化剂的上游侧和下游侧的废气条件的传感器。 对于传感器，例如，可以使用其输出在λ= 1处逐步变化的氧传感器，或者其输出与空燃比成比例地变化的传感器。 传感器的检测值被带入控制单元，通过比较检测值来估计催化剂的效率和劣化程度，并且控制发动机以使消除效率变得最大。 根据本发明，由于精确地确定催化剂的效率降低并且控制发动机以防止催化剂效率降低，因此可以保持催化剂的优选废气清洁特性。

    Evaluating method for NOx eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor
    2.
    发明授权
    Evaluating method for NOx eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor 失效
    NOx排出催化剂的评价方法及其评价装置及其效率控制方法

    公开(公告)号：US06812029B2

    公开(公告)日：2004-11-02

    申请号：US09814792

    申请日：2001-03-23

    申请人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    发明人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    IPC分类号： G01N3110

    CPC分类号： F02D41/0235 ,  B01D53/8696 ,  B01D53/9495 ,  F01N11/007 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47 ,  Y10T436/177692 ,  Y10T436/20 ,  Y10T436/206664 ,  Y10T436/208339 ,  Y10T436/21

    摘要： In order to prevent a catalyst for an internal combustion engine from decreasing efficiency by deterioration after long time use of the catalyst, the decreased efficiency of the catalyst is determined, and the internal engine is controlled based on results of the determination so as to maintain high efficiency of the catalyst. The catalyst is installed in an exhaust pipe of the engine. Sensors for detecting conditions of exhaust gas both at upstream side and downstream side of the catalyst are provided, respectively. As for the sensor, for example, an oxygen sensor of which output varies stepwise at &lgr;=1, or a sensor of which output varies in proportion to air-fuel ratio can be used. Detected values of the sensors are taken into a control unit, eliminating efficiency and deteriorating degree of the catalyst are estimated by comparison of the detected values, and the engine is controlled so that the eliminating efficiency becomes maximum. In accordance with the present invention, a preferable exhaust gas cleaning characteristics of the catalyst can be maintained because the decreased efficiency of the catalyst is determined exactly and the engine is controlled so as to prevent the catalyst from decreasing efficiency.

    Evaluating method for NOx eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor
    3.
    发明授权
    Evaluating method for NOx eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor 失效
    NOx排出催化剂的评价方法及其评价装置及其效率控制方法

    公开(公告)号：US06828156B2

    公开(公告)日：2004-12-07

    申请号：US10152795

    申请日：2002-05-23

    申请人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    发明人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    IPC分类号： G01M1900

    CPC分类号： F02D41/0235 ,  B01D53/8696 ,  B01D53/9495 ,  F01N11/007 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47 ,  Y10T436/177692 ,  Y10T436/20 ,  Y10T436/206664 ,  Y10T436/208339 ,  Y10T436/21

    摘要： In order to prevent a catalyst for an internal combustion engine from decreasing efficiency by deterioration after long time use of the catalyst, the decreased efficiency of the catalyst is determined, and the internal engine is controlled based on results of the determination so as to maintain high efficiency of the catalyst. The catalyst is installed in an exhaust pipe of the engine. Sensors for detecting conditions of exhaust gas both at upstream side and downstream side of the catalyst are provided, respectively. As for the sensor, for example, an oxygen sensor of which output varies stepwise at &lgr;=1, or a sensor of which output varies in proportion to air-fuel ratio can be used. Detected values of the sensors are taken into a control unit, eliminating efficiency and deteriorating degree of the catalyst are estimated by comparison of the detected values, and the engine is controlled so that the eliminating efficiency becomes maximum. In accordance with the present invention, a preferable exhaust gas cleaning characteristics of the catalyst can be maintained because the decreased efficiency of the catalyst is determined exactly and the engine is controlled so as to prevent the catalyst from decreasing efficiency.

    摘要翻译： 为了防止内燃机的催化剂长时间使用催化剂后的劣化而降低效率，确定催化剂的效率降低，并且根据测定结果来控制内部发动机以保持高 催化剂的效率。 催化剂安装在发动机的排气管中。 分别提供用于检测催化剂的上游侧和下游侧的废气条件的传感器。 对于传感器，例如，可以使用其输出在λ= 1处逐步变化的氧传感器，或者其输出与空燃比成比例地变化的传感器。 传感器的检测值被带入控制单元，通过比较检测值来估计催化剂的效率和劣化程度，并且控制发动机以使消除效率变得最大。 根据本发明，由于精确地确定催化剂的效率降低并且控制发动机以防止催化剂效率降低，因此可以保持催化剂的优选废气清洁特性。

    Evaluating method for NO.sub.x eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor
    5.
    发明授权
    Evaluating method for NO.sub.x eliminating catalyst, an evaluating apparatus therefor, and an efficiency controlling method therefor 失效
    NOx排出催化剂的评价方法及其评价装置及其效率控制方法

    公开(公告)号：US5693877A

    公开(公告)日：1997-12-02

    申请号：US264068

    申请日：1994-06-22

    申请人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    发明人： Minoru Ohsuga ,  Mamoru Fujieda ,  Nobuo Kurihara

    IPC分类号： B01D53/30 ,  B01D53/86 ,  B01D53/94 ,  F01N3/20 ,  F01N3/24 ,  F01N11/00 ,  F02D41/02 ,  G01M19/00

    CPC分类号： F02D41/0235 ,  B01D53/8696 ,  B01D53/9495 ,  F01N11/007 ,  F01N2550/02 ,  Y02T10/22 ,  Y02T10/47 ,  Y10T436/177692 ,  Y10T436/20 ,  Y10T436/206664 ,  Y10T436/208339 ,  Y10T436/21

    摘要： In order to prevent a catalyst for an internal combustion engine from experiencing decreased efficiency by deterioration after long time use of the catalyst, the decreased efficiency of the catalyst is determined, and the internal engine is controlled based on results of the determination so as to maintain high efficiency of the catalyst. The catalyst is installed in an exhaust pipe of the engine. Sensors for detecting conditions of exhaust gas both at a upstream side and a downstream side of the catalyst are provided, respectively. As for the sensor, for example, an oxygen sensor whose output varies stepwise at .lambda.=1, or a sensor whose output varies in proportion to air-fuel ratio can be used. Detected values of the sensors are taken into a control unit, catalyst efficiency and deteriorating degree of the catalyst are estimated by comparison of the detected values, and the engine is controlled so that the catalyst efficiency is maximized. A preferable exhaust gas cleaning characteristics of the catalyst can be maintained because the decreased efficiency of the catalyst is determined exactly and the engine is controlled so as to prevent the catalyst from experiencing decrease efficiency.

    摘要翻译： 为了防止内燃机的催化剂在长时间使用催化剂后由于劣化而经历效率降低，确定了催化剂的效率降低，并且根据测定结果来控制内部发动机以便维持 催化剂效率高。 催化剂安装在发动机的排气管中。 分别设置用于检测催化剂的上游侧和下游侧的排气条件的传感器。 对于传感器，例如，可以使用其输出在λ= 1处逐步变化的氧传感器，或其输出与空燃比成比例地变化的传感器。 将传感器的检测值作为控制单元，通过比较检测值来估计催化剂的催化剂效率和劣化程度，并且控制发动机以使催化剂效率最大化。 催化剂的优选的废气清洁特性可以被保持，因为精确地确定催化剂的效率降低，并且控制发动机以防止催化剂降低效率。

    Engine exhaust gas recirculation system
    8.
    发明授权
    Engine exhaust gas recirculation system 失效
    发动机排气再循环系统

    公开(公告)号：US5261373A

    公开(公告)日：1993-11-16

    申请号：US786244

    申请日：1991-10-31

    申请人： Minoru Ohsuga ,  Toshiharu Nogi ,  Mamoru Fujieda ,  Yoshishige Ohyama

    发明人： Minoru Ohsuga ,  Toshiharu Nogi ,  Mamoru Fujieda ,  Yoshishige Ohyama

    IPC分类号： F02D45/00 ,  F02M25/07 ,  F02B17/00 ,  F02D41/14

    CPC分类号： F02D41/005 ,  F02D41/0072 ,  F02M26/01 ,  F02M26/20 ,  F02M26/40 ,  F02M26/61 ,  F02D2200/0406 ,  F02D2200/0411 ,  Y02T10/47

    摘要： An engine exhaust gas recirculation system has an intake passage (2) connected to feed an air/fuel mixture to an internal combustion engine and an exhaust passage (1) connected to discharge an exhaust gas from the internal combustion engine. An exhaust gas recirculation passage (3) is provided for feeding a portion of the exhaust gas of the exhaust passage into a cylinder of the engine such that a laminar distribution is produced in the cylinder formed by air/fuel mixture adjacent to the ignition plug and the recirculated exhaust gas distributed about the air/fuel mixture. The exhaust gas recirculation passage may open in the vicinity of an intake valve of the engine or open into the cylinder above the bottom dead center of the piston. The flow of recirculated exhaust gas may be controlled by pressure, for example by the inlet and exhaust valves of the engine and/or by a pressure control valve (31, 34). Alternatively, the exhaust gas recirculation may be controlled in a multicylinder engine by a distributor (20) which may be controlled by an engine "roughness" control signal. The EGR may be computed from outputs of an air flow sensor (7) and an intake manifold pressure sensor (50).