Method and device for diagnosing deviations in a single cylinder lambda control
    1.
    发明授权
    Method and device for diagnosing deviations in a single cylinder lambda control 有权
    用于诊断单缸lambda控制中的偏差的方法和装置

    公开(公告)号:US09188073B2

    公开(公告)日:2015-11-17

    申请号:US13514712

    申请日:2010-11-05

    Abstract: The invention relates to a method and device for diagnosing deviations in a single cylinder lambda control in an internal combustion engine having at least two cylinders and an exhaust gas sensor designed as a broadband lambda sensor, wherein a pump current is evaluated by means of a pump cell and the pump current is used at least temporarily for an individual cylinder lambda control. According to the invention, a pump voltage or a pump voltage change is determined via the pump cell in addition to the pump current and the value is transmitted to a diagnosis apparatus. Deviations in the single cylinder lambda control can thus be better diagnosed without additional material expense according to the invention, which provides advantages in particular in respect of tightened rulemaking in on-board diagnosis. A preferred application of the method is the use in internal combustion engines having multi-bank exhaust systems.

    Abstract translation: 本发明涉及一种用于诊断具有至少两个气缸的内燃机中的单气缸λ控制的偏差的方法和装置,以及设计为宽带λ传感器的废气传感器,其中泵电流通过泵 至少临时使用单个气缸λ控制的泵电流。 根据本发明,除了泵电流之外,还经由泵电池来确定泵电压或泵电压变化,并将该值传送到诊断装置。 因此,根据本发明,可以更好地诊断单缸λ控制中的偏差,而不需要额外的材料费用,其特别地在车载诊断中的紧固规则制定方面提供了优点。 该方法的优选应用是在具有多排排气系统的内燃机中的应用。

    PROCEDURE AND DEVICE FOR DETECTING MANIPULATIONS AT LAMBDA PROBES
    6.
    发明申请
    PROCEDURE AND DEVICE FOR DETECTING MANIPULATIONS AT LAMBDA PROBES 有权
    用于检测兰博达探针的程序和装置

    公开(公告)号:US20100107728A1

    公开(公告)日:2010-05-06

    申请号:US12611237

    申请日:2009-11-03

    Abstract: A procedure for detecting manipulations at lambda comprises the following steps; the lambda probe is excited by at least one electric excitation signal; at least one electric response signal of the probe is detected; the at least one response signal is compared to at least one default electric response signal that characterizes a not manipulated probe; the deviation of the detected at least one electric response signal from the at least one default electric response signal is used for detecting a manipulation of the probe. A device for detecting manipulations at lambda probes characterized by a switch assembly, with which the probe can be impinged with an electric excitation signal, in particular a step-wise electric excitation, preferably with a current impulse, by a evaluation switch device for evaluating a response signal, in particular the probe voltage and for comparing the excitation signal with the response signal and for assuming a manipulation in the case of a deviation of the response signal from a response signal that characterizes a not manipulated probe.

    Abstract translation: 用于检测λ的操作的过程包括以下步骤: λ探针由至少一个电激励信号激发; 检测探头的至少一个电响应信号; 将至少一个响应信号与表征未被操纵的探针的至少一个默认电响应信号进行比较; 检测到的至少一个电响应信号与至少一个默认电响应信号的偏差用于检测探头的操作。 一种用于检测在λ探针上的操作的装置,其特征在于开关组件,探针可以通过评估开关装置用电激励信号,特别是逐步电激励,优选地以电流脉冲冲击,用于评估 响应信号,特别是探针电压,并用于将激励信号与响应信号进行比较,并用于在响应信号与表征未操纵的探头的响应信号偏离的情况下进行操作。

    Procedure and device for detecting manipulations at lambda probes
    10.
    发明授权
    Procedure and device for detecting manipulations at lambda probes 有权
    用于检测λ探针操作的步骤和装置

    公开(公告)号:US08381567B2

    公开(公告)日:2013-02-26

    申请号:US12611237

    申请日:2009-11-03

    Abstract: A procedure for detecting manipulations at lambda comprises the following steps; the lambda probe is excited by at least one electric excitation signal; at least one electric response signal of the probe is detected; the at least one response signal is compared to at least one default electric response signal that characterizes a not manipulated probe; the deviation of the detected at least one electric response signal from the at least one default electric response signal is used for detecting a manipulation of the probe. A device for detecting manipulations at lambda probes characterized by a switch assembly, with which the probe can be impinged with an electric excitation signal, in particular a step-wise electric excitation, preferably with a current impulse, by a evaluation switch device for evaluating a response signal, in particular the probe voltage and for comparing the excitation signal with the response signal and for assuming a manipulation in the case of a deviation of the response signal from a response signal that characterizes a not manipulated probe.

    Abstract translation: 用于检测λ的操作的过程包括以下步骤: λ探针由至少一个电激励信号激发; 检测探头的至少一个电响应信号; 将至少一个响应信号与表征未被操纵的探针的至少一个默认电响应信号进行比较; 检测到的至少一个电响应信号与至少一个默认电响应信号的偏差用于检测探头的操作。 一种用于检测在λ探针上的操作的装置,其特征在于开关组件,探针可以通过评估开关装置用电激励信号,特别是逐步电激励,优选地以电流脉冲冲击,用于评估 响应信号,特别是探针电压,并用于将激励信号与响应信号进行比较,并且用于在响应信号与表征未操纵的探针的响应信号偏离的情况下进行操作。

Patent Agency Ranking