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54 条记录 (耗时 0.019 秒)

    Diagnostic method and control apparatus for gas sensor
    41.
    发明公开
    Diagnostic method and control apparatus for gas sensor 审中-公开
    Diagnfeld和StefergerätfürGasfühler

    公开(公告)号：EP1961942A2

    公开(公告)日：2008-08-27

    申请号：EP08002866.5

    申请日：2008-02-15

    申请人： NGK Spark Plug Co., Ltd. ,  SUZUKI MOTOR CORPORATION

    发明人： Fukagai, Reina ,  Ieda, Norikazu ,  Tanaka, Masahiro ,  Inagaki, Hiroshi ,  Takamatsu, Kunihiko ,  Hirata, Masaki ,  Suzuki, Takahiro

    IPC分类号： F02D41/22 ,  F02D41/14

    CPC分类号： F02D41/1456 ,  F02D41/123 ,  F02D41/126 ,  F02D41/1495 ,  F02D2250/14 ,  G01N27/4175

    摘要： A gas sensor diagnostic method includes: a fuel supply detecting step of detecting an interruption of a fuel supply to the internal combustion engine, and a restart of the fuel supply after the interruption of the fuel supply; a response time period accumulating step of determining a response time period by accumulating a first time period that the sensor output value reaches from a first threshold value to a second threshold value after the detection of the interruption of the fuel supply, and a second time period that the sensor output value reaches from a third threshold value to a fourth threshold value after the detection of the restart of the fuel supply after the interruption of the fuel supply; and an abnormal state diagnosing section of determining an abnormal state of the gas sensor when the response time period is greater than a predetermined time period.

    摘要翻译： 气体传感器诊断方法包括：燃料供给检测步骤，检测对内燃机的燃料供给的中断，以及在燃料供给中断之后重新启动燃料供给; 响应时间累积步骤，通过在检测到燃料供应中断之后累积传感器输出值从第一阈值到达第二阈值的第一时间段来确定响应时间段，以及第二时间段 在燃料供给中断之后检测到燃料供应的重新启动之后，传感器输出值从第三阈值到达第四阈值; 以及异常状态诊断部，其在所述响应时间段大于预定时间段时确定所述气体传感器的异常状态。

    Diagnostic method and apparatus for an exhaust gas sensor
    42.
    发明公开
    Diagnostic method and apparatus for an exhaust gas sensor 审中-公开
    Diagnoseverfahren und Vorrichtungfüreine Abgassonde

    公开(公告)号：EP1961941A2

    公开(公告)日：2008-08-27

    申请号：EP08002666.9

    申请日：2008-02-13

    申请人： NGK Spark Plug Co., Ltd. ,  SUZUKI MOTOR CORPORATION

    发明人： Fukagai, Reina ,  Ieda, Norikazu ,  Tanaka, Masahiro ,  Inagaki, Hiroshi ,  Hirata, Masaki ,  Suzuki, Takahiro

    IPC分类号： F02D41/14 ,  G01N27/41

    CPC分类号： F02D41/1495 ,  F02D41/1456 ,  F02D41/1474 ,  F02D41/1494 ,  F02D2041/1432

    摘要： A gas sensor diagnostic method includes the steps of counting the reversal number of times that a target air-fuel ratio for an air-fuel mixture to be supplied to an internal combustion engine reverses from a rich side to a lean side or from the lean side to the rich side through a specific air-fuel ratio defined as a boundary of the rich and lean sides; obtaining a detection signal of a gas sensor at constant time intervals during a diagnosis period between a timing when the count for the reversal number is started and a timing when the reversal number reaches a predetermined number; calculating a moderated signal by applying a moderation calculation using a predetermined moderation coefficient to the obtained detection signal; calculating a deviation between the obtained detection signal and the calculated moderated signal; and determining whether the gas sensor is in an abnormal state or not on the basis of the deviation.

    摘要翻译： 气体传感器诊断方法包括以下步骤：计算供给内燃机的空气燃料混合物的目标空燃比从富侧向倾斜侧或从稀侧反转的次数 通过定义为富边和贫边的边界的特定空燃比向富人提供; 在开始反转次数的定时与反转次数达到规定数的定时之间的诊断期间，以恒定的时间间隔获取气体传感器的检测信号; 通过对所获得的检测信号应用使用预定调节系数的审核计算来计算调节信号; 计算所获得的检测信号与计算的调节信号之间的偏差; 以及基于偏差确定气体传感器是否处于异常状态。

    Nox-concentration detecting apparatus
    45.
    发明授权
    Nox-concentration detecting apparatus 失效
    用于测量的NOx的浓度的装置

    公开(公告)号：EP0884587B1

    公开(公告)日：2006-02-08

    申请号：EP98110913.5

    申请日：1998-06-15

    申请人： NGK Spark Plug Co. Ltd.

    发明人： Kondo, Noriaki ,  Inagaki, Hiroshi

    IPC分类号： G01N27/406 ,  G01N27/407 ,  G01N33/00

    CPC分类号： G01N33/0037 ,  G01N27/407 ,  Y02A50/245

    摘要： An NOx-concentration detecting apparatus enables a user to readily know a record of operating conditions of an NOx sensor. The apparatus includes an NOx sensor, pumping-current control means, constant-voltage application means, NOx-concentration detecting means, a heater and writing means for writing to a recorder variation of at least one parameter selected from a first pumping current value, a second pumping current value, the concentration of oxygen contained in the measurement gas and the concentration of NOx in the measurement gas. Also disclosed is an NOx-concentration detecting apparatus capable of determining the concentration of NOx at a high resolution even when different NOx sensors are used. The NOx-concentration detecting apparatus detects the first pumping current IP1 and the second pumping current Ip2, corrects the detected values based on correction data stored on a floppy disk, and determines the concentration of NOx in the measurement gas using stored standard characteristics.

    Connector for nox sensor
    48.
    发明公开
    Connector for nox sensor 有权
    塞的NOx传感器

    公开(公告)号：EP0933631A3

    公开(公告)日：2004-09-29

    申请号：EP99300591.7

    申请日：1999-01-27

    申请人： NGK SPARK PLUG CO., LTD.

    发明人： Inagaki, Hiroshi ,  Kondo, Noriaki

    IPC分类号： G01N27/417 ,  G01N33/00

    CPC分类号： G01N27/417

    摘要： A connector 2b for an NOx sensor is connected via a cable C to an end of a sensor body 2a through which a first pump current and a second pump current flow according to the concentration of oxygen and that of NOx, respectively, contained in a gas to be measured. The connector 2b is provided with not only terminals for inputting a signal to and outputting a signal from the sensor body 2a but also a label resistor RL having resistance corresponding to characteristics (relationship between oxygen concentration and first pump current and that between NOx concentration and second pump current) of the sensor body 2a and label signal output terminals T01 and T02 connected to opposite ends of the label resistor RL. On the basis of characteristics of the sensor body 2a, which are identified from the resistance of the label resistor RL which, in turn, is identified via the terminals T01 and T02, the oxygen concentration and the NOx concentration are accurately obtained from detected values of the first and second pump currents. This enables an NOx sensor to always perform accurate measurement irrespective of variations in characteristics among NOx sensors.

    Ignition unit for internal combustion engine
    50.
    发明公开
    Ignition unit for internal combustion engine 有权
    用于内燃机的点火单元

    公开(公告)号：EP1063426A3

    公开(公告)日：2002-11-20

    申请号：EP00113423.8

    申请日：2000-06-24

    申请人： NGK SPARK PLUG CO., LTD

    发明人： Inagaki, Hiroshi

    IPC分类号： F02P3/04

    CPC分类号： F02P3/0435

    摘要： For minimizing spark energy and improving durability of a spark plug (13) without controlling a time for energizing a primary wiring (L1), the ignition unit (1,2 and 3) for an internal combustion engine is arranged in that actions of a transistor (17) are controlled by an ECU (19) to abruptly interrupt a primary current (i1) such that high voltage for ignition induced to a secondary wiring (L2) is applied on the spark plug (13) for generating spark discharge. For forcibly interrupting spark discharge at a spark discharge duration, the ECU (19) switches the thyristor (21 and 210) ON to supply current to the primary wiring (L1) for forcibly interrupting the spark discharge. By controlling the spark discharge duration to be optimum on a basis of an operating condition of the internal combustion engine, it is possible to restrict generation of multiple discharge and to restrict exhaustion of electrodes of the spark plug (13). It is also possible to realize spark discharge through a simple arrangement of low cost by simply providing a single thyristor (21 and 210).