METHOD FOR OPERATING A SOOT SENSOR
    1.
    发明申请
    METHOD FOR OPERATING A SOOT SENSOR 审中-公开
    操作传感器的方法

    公开(公告)号:US20130283887A1

    公开(公告)日:2013-10-31

    申请号:US13994056

    申请日:2011-12-14

    IPC分类号: G01N15/06

    摘要: A method for operating a soot sensor in the exhaust gas tract of an internal combustion engine. The soot sensor includes an inter-digital electrode structure to which a measurement voltage is applied. Soot particles from the exhaust gas flow deposit themselves on the inter-digital electrode structure and an measuring current is evaluated as a measurement for the soot concentration of the soot sensor. A heating element for burning clean the inter-digital electrode structure is provided. The method for operating the soot sensor has good measurement results and the shortest possible idle time. To this end, a point in time for burning clean the soot sensor is determined in accordance with the operational state of the internal combustion engine and then, the burning clean of the inter-digital electrode structure starts by heating the soot sensor by the heating element.

    摘要翻译: 一种用于在内燃机的排气道中操作烟灰传感器的方法。 烟炱传感器包括施加测量电压的数字间电极结构。 来自废气流的烟灰颗粒自身沉积在数字间电极结构上,并且测量电流被评估为烟灰传感器的烟灰浓度的测量。 提供了用于燃烧清洁数字间电极结构的加热元件。 用于操作烟灰传感器的方法具有良好的测量结果和最短的空闲时间。 为此,根据内燃机的工作状态确定燃烧清洁烟炱传感器的时间点,然后通过加热元件加热烟炱传感器开始数字间电极结构的燃烧清洁 。

    Method And Device For Operating A Particle Sensor
    3.
    发明申请
    Method And Device For Operating A Particle Sensor 有权
    用于操作粒子传感器的方法和装置

    公开(公告)号:US20120255340A1

    公开(公告)日:2012-10-11

    申请号:US13416874

    申请日:2012-03-09

    IPC分类号: G01N7/00

    CPC分类号: F02D41/1466 F01N2560/05

    摘要: A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes.

    摘要翻译: 布置在排气管道中的颗粒传感器,使得当在两个传感器电极之间施加大于极限电压的电压时,来自排气流的颗粒在至少两个传感器电极之间和/或之间聚集,并且如果 电压低于极限电压。 在第一时间段期间,在传感器电极之间施加大于极限电压的第一电压。 在第二时间段期间,在传感器电极之间施加低于极限电压的第二电压,和/或将颗粒传感器加热到预定温度,使得基本上没有颗粒聚集在和/或至少 两个传感器电极。 在第二时间段之后,在传感器电极之间施加大于极限电压的第三电压。

    Method and device for operating a particle sensor
    5.
    发明授权
    Method and device for operating a particle sensor 有权
    用于操作颗粒传感器的方法和装置

    公开(公告)号:US09399967B2

    公开(公告)日:2016-07-26

    申请号:US13416874

    申请日:2012-03-09

    IPC分类号: F02D41/14 G01N27/16

    CPC分类号: F02D41/1466 F01N2560/05

    摘要: A particle sensor arranged in an exhaust duct such that particles from the exhaust-gas flow accumulate on and/or between at least two sensor electrodes when a voltage greater than a limit voltage is applied between the two sensor electrodes and substantially no particles accumulate if the voltage is lower than the limit voltage. During a first time period, a first voltage greater than the limit voltage is applied between the sensor electrodes. During a second time period, a second voltage, lower than the limit voltage, is applied between the sensor electrodes, and/or the particle sensor is heated to a predefined temperature, such that substantially no particles accumulate on and/or between the at least two sensor electrodes. Following the second time period, a third voltage greater than the limit voltage is applied between the sensor electrodes.

    摘要翻译: 布置在排气管道中的颗粒传感器,使得当在两个传感器电极之间施加大于极限电压的电压时,来自排气流的颗粒在至少两个传感器电极之间和/或之间聚集,并且如果 电压低于极限电压。 在第一时间段期间,在传感器电极之间施加大于极限电压的第一电压。 在第二时间段期间,在传感器电极之间施加低于极限电压的第二电压,和/或将颗粒传感器加热到预定温度,使得基本上没有颗粒聚集在和/或至少 两个传感器电极。 在第二时间段之后,在传感器电极之间施加大于极限电压的第三电压。

    Method for evaluating the state of a soot sensor in a motor vehicle
    8.
    发明授权
    Method for evaluating the state of a soot sensor in a motor vehicle 有权
    用于评估机动车辆中的烟灰传感器的状态的方法

    公开(公告)号:US08635900B2

    公开(公告)日:2014-01-28

    申请号:US12905660

    申请日:2010-10-15

    IPC分类号: G01M15/10

    摘要: A method for performing on-board functional diagnostics on a soot sensor of a vehicle and/or for detecting further components in the soot in a motor vehicle having an internal combustion engine. The soot sensor is electrically connected to an evaluation circuit with is permanently installed in the motor vehicle. In order to specify a method for performing functional diagnostics on a soot sensor and/or for detecting further components in the soot, with which method it is possible to detect a faulty soot sensor and/or further components in the soot in a cost-effective way, the evaluation circuit measures the temperature coefficient of the soot sensor and detects the defectiveness of the soot sensor and/or the presence of further components in the soot on the basis of the temperature coefficient of the soot sensor.

    摘要翻译: 一种用于在车辆的烟灰传感器上执行车载功能诊断和/或用于检测具有内燃机的机动车辆中的烟灰中的其它部件的方法。 煤烟传感器电连接到永久安装在机动车辆中的评估电路。 为了指定用于在烟灰传感器上执行功能诊断和/或用于检测烟灰中的其它部件的方法,用哪种方法可以以成本有效的方式检测烟灰中的故障烟灰传感器和/或其它部件 评估电路基于烟灰传感器的温度系数来测量烟灰传感器的温度系数,并根据烟炱传感器的温度系数检测煤烟传感器的缺陷和/或烟灰中其它部件的存在。

    METHOD FOR OPERATING A SOOT SENSOR
    9.
    发明申请
    METHOD FOR OPERATING A SOOT SENSOR 审中-公开
    操作传感器的方法

    公开(公告)号:US20130298640A1

    公开(公告)日:2013-11-14

    申请号:US13997165

    申请日:2011-12-21

    IPC分类号: G01N15/06

    摘要: A method for operating a soot sensor that has an interdigital electrode structure, to which a measurement voltage is applied. Soot particles from an exhaust gas flow are deposited onto the interdigital electrode structure and the measurement current is evaluated as a measure of the soot load of the soot sensor. The interdigital electrode structure is burned clean at or above a predetermined soot load, which is detected by means of an upper current threshold. The method includes burning the interdigital electrode structure clean by heating up the soot sensor after the upper current threshold has been reached; monitoring the measurement current while the interdigital electrode structure is being burned clean; and stopping the burning clean when the value of the measurement current has reached a lower current threshold.

    摘要翻译: 一种用于操作具有指示测量电压的交叉指状电极结构的烟灰传感器的方法。 来自废气流的烟尘颗粒沉积在叉指电极结构上,并且测量电流被评估为烟灰传感器的烟灰负荷的量度。 叉指电极结构在等于或高于预定的烟炱负荷下被清洁,其通过上电流阈值检测。 该方法包括通过在达到上限电流阈值之后加热烟灰传感器来燃烧叉指电极结构; 监测交叉指状电极结构被清洁时的测量电流; 并且当测量电流的值达到较低的电流阈值时停止燃烧清洁。