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    CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE
    3.
    发明申请
    CONTROL SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开
    内燃机控制系统

    公开(公告)号：US20160341088A1

    公开(公告)日：2016-11-24

    申请号：US15110427

    申请日：2014-12-18

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

    发明人： Yuji YAMAGUCHI ,  Norihisa NAKAGAWA ,  Shuntaro OKAZAKI ,  Yuji MIYOSHI

    IPC分类号： F01N3/20 ,  F02D35/00

    CPC分类号： F01N3/20 ,  F01N2570/14 ,  F02D35/0015 ,  F02D41/025 ,  F02D41/0295 ,  F02D41/1475 ,  F02D2200/0802 ,  F02D2200/0816

    摘要： An internal combustion engine comprises an exhaust purification catalyst. The control system comprises a temperature detecting means for detecting or estimating a temperature of the exhaust purification catalyst, performs feedback control so that an air-fuel ratio of exhaust gas flowing into the exhaust purification catalyst becomes a target air-fuel ratio, and performs target air-fuel ratio setting control which alternately sets the target air-fuel ratio to a rich set air-fuel ratio and a lean set air-fuel ratio. In addition, the control system increases a variation difference, obtained by subtracting a rich degree of the rich set air-fuel ratio from a lean degree of a lean set air-fuel ratio, when a temperature of the exhaust purification catalyst detected or estimated by the temperature detecting means is a predetermined upper limit temperature or less compared with when it is higher than the upper limit temperature. As a result, a sulfur ingredient storage amount of an exhaust purification catalyst is maintained low.

    摘要翻译： 内燃机包括排气净化催化剂。 控制系统包括温度检测装置，用于检测或估计排气净化催化剂的温度，执行反馈控制，使流入排气净化催化剂的废气的空燃比成为目标空燃比，并执行目标 空燃比设定控制，其将目标空燃比交替地设定为浓空燃比和稀空燃比。 此外，控制系统通过从稀薄空燃比的贫乏度减去浓空燃比的浓度而获得的变化差异，当由排气净化催化剂检测或估计的排气净化催化剂的温度 温度检测装置与高于上限温度的情况相比是预定的上限温度以下。 结果，排气净化催化剂的硫成分保存量保持较低。

    Diagnosis method and device for operating an internal combustion engine
    5.
    发明授权
    Diagnosis method and device for operating an internal combustion engine 有权
    用于操作内燃机的诊断方法和装置

    公开(公告)号：US09217384B2

    公开(公告)日：2015-12-22

    申请号：US14001269

    申请日：2012-02-21

    申请人： Reza Azadeh

    发明人： Reza Azadeh

    IPC分类号： F02D41/30 ,  F02D41/00 ,  F02D41/14 ,  F02D41/22 ,  F02D41/28

    CPC分类号： F02D41/009 ,  F01N2900/1624 ,  F02D41/008 ,  F02D41/1401 ,  F02D41/1444 ,  F02D41/1456 ,  F02D41/1495 ,  F02D41/1498 ,  F02D41/22 ,  F02D2041/286 ,  F02D2200/0816 ,  Y02T10/40

    摘要： A method is disclosed for performing an individual cylinder diagnosis with respect to pollutant emissions within a predefined operating range of an internal combustion engine, meeting at least one predefined condition. During the performing of the individual cylinder diagnosis, a forced activation, by means of which a predefined air/fuel ratio to be set is activated, is prescribed in a manner synchronous to the cylinder segment. The excitation is carried out such that each individual cylinder is subjected during subsequent working cycles to a mixture that is either richer or leaner in comparison to the predefined air/fuel ratio to be set due to the forced excitation. Depending on the forcibly activated air/fuel ratio to be set, the corresponding injection valves are actuated.

    摘要翻译： 公开了一种用于对内燃机的预定操作范围内的污染物排放执行单独的气缸诊断的方法，以满足至少一个预定条件。 在执行单缸诊断期间，以与气缸段同步的方式规定强制启动（借助于此来启动要设定的预定空气/燃料比）。 执行激励，使得在随后的工作循环期间，每个单独的气缸与由于强制激励而被设定的预定空气/燃料比相比更丰富或更冷的混合物进行。 根据待设定的强制空气/燃油比，相应的喷射阀被启动。

    Approach for engine control and diagnostics
    6.
    发明授权
    Approach for engine control and diagnostics 有权
    发动机控制和诊断方法

    公开(公告)号：US09175625B2

    公开(公告)日：2015-11-03

    申请号：US14180541

    申请日：2014-02-14

    申请人： Ford Global Technologies, LLC

    发明人： Pankaj Kumar ,  Imad Hassan Makki ,  Dimitar Petrov Filev

    IPC分类号： F01N3/00 ,  F02D41/02

    CPC分类号： F02D41/0295 ,  F01N11/007 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/18 ,  F02D2200/0814 ,  F02D2200/0816

    摘要： Embodiments for an engine exhaust are provided. In one example, a method comprises adjusting a fuel injection amount based on a fractional oxidation state of a catalyst, the fractional oxidation state based on reaction rates of a plurality of exhaust gas species throughout a catalyst longitudinal axis and a set of axially-averaged mass balance and energy balance equations for a fluid phase and a washcoat of the catalyst, and further based on feedback from a downstream air-fuel ratio sensor. In this way, a simplified catalyst model may be used to control air-fuel ratio.

    摘要翻译： 提供了用于发动机排气的实施例。 在一个实例中，一种方法包括基于催化剂的分数氧化态调节燃料喷射量，基于多个排气物质在催化剂纵向轴线上的反应速率和一组轴向平均质量的分数氧化态 平衡和能量平衡方程，并且还基于来自下游空燃比传感器的反馈。 以这种方式，可以使用简化的催化剂模型来控制空燃比。

    CATALYST DETERIORATION DETERMINATION SYSTEM
    8.
    发明申请
    CATALYST DETERIORATION DETERMINATION SYSTEM 有权
    催化剂测定系统

    公开(公告)号：US20150152769A1

    公开(公告)日：2015-06-04

    申请号：US14404340

    申请日：2012-05-28

    申请人： Keiichiro Aoki ,  Koichi Kitaura ,  Go Hayashita

    发明人： Keiichiro Aoki ,  Koichi Kitaura ,  Go Hayashita

    IPC分类号： F01N11/00 ,  G01M15/10

    CPC分类号： F01N11/007 ,  F01N2550/02 ,  F01N2560/025 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D2200/0816 ,  G01M15/104 ,  Y02T10/47

    摘要： A catalyst deterioration determination system for determining deterioration of an exhaust gas purification catalyst having a capability of storing oxygen determines deterioration of the exhaust gas purification catalyst on the basis of its oxygen storage capacity. The system includes an oxygen concentration sensor provided downstream of the catalyst and having characteristics by which as rich gas components in exhaust gas increase, the oxygen concentration sensor outputs a measurement value of the oxygen concentration corresponding to a richer air-fuel ratio. When determining deterioration, the system performs a rich shift mode in which the exhaust gas air-fuel ratio is shifted from a lean air-fuel ratio to a rich air-fuel ratio and a lean shift mode in which the exhaust gas air-fuel ratio is shifted from a rich air-fuel ratio to a lean air-fuel ratio by exhaust gas air-fuel ratio control means, based on the measurement value of the oxygen concentration sensor. The rate of change of the exhaust gas air-fuel ratio in at least the lean shift mode among the rich shift mode and the lean shift mode is limited to a predetermined rate of change or lower, and the rate of change of the exhaust gas air-fuel ratio in the rich shift mode is set higher than the rate of change of the exhaust gas air furl ratio in the lean shift mode.

    摘要翻译： 用于确定具有存储氧气的废气净化催化剂的劣化的催化剂劣化确定系统基于其储氧能力来确定废气净化催化剂的劣化。 该系统包括设置在催化剂下游的氧浓度传感器，其特征在于，随着废气中富含气体成分的增加，氧浓度传感器输出对应于较浓空燃比的氧浓度的测量值。 当确定劣化时，系统执行富排气模式，其中废气空燃比从稀空燃比转变为浓空气燃料比和贫排气模式，其中排气空燃比 基于氧浓度传感器的测量值，通过废气空燃比控制装置从浓空燃比转变为稀空燃比。 在富变换模式和稀班模式之间的至少贫偏模式中的排气空燃比的变化率被限制在预定变化率或更低的变化率，并且排气空气的变化率 富排气模式中的燃料比设定为高于贫排气模式中的废气空气流量比的变化率。

    Method for determining a delay time of a pre-catalytic converter lambda probe and method for determining the oxygen storage capacity of an oxygen store
    10.
    发明授权
    Method for determining a delay time of a pre-catalytic converter lambda probe and method for determining the oxygen storage capacity of an oxygen store 有权
    用于确定预催化转化器λ探针的延迟时间的方法和用于确定氧储存器的储氧能力的方法

    公开(公告)号：US08826722B2

    公开(公告)日：2014-09-09

    申请号：US13210643

    申请日：2011-08-16

    申请人： Bodo Odendall

    发明人： Bodo Odendall

    IPC分类号： G01N33/497 ,  F02D41/14 ,  F02D41/02 ,  F01N3/08 ,  F01N11/00

    CPC分类号： F02D41/1441 ,  F01N3/0864 ,  F01N11/007 ,  F01N2550/02 ,  F02D41/0295 ,  F02D2200/0816 ,  F02D2250/14

    摘要： The output signal of a pre-catalytic converter lambda probe and the output signal of a controller are used to determine an inherent delay time of the pre-catalytic converter lambda probe, for example due to aging of the probe, by measuring, for example, the separation between maxima in these output signals. The pre-catalytic converter lambda probe is installed in an exhaust gas system of an arrangement wherein an internal combustion engine operated under controlled conditions. The determined delay time can be used to determine the oxygen storage capacity of an oxygen store associated with a catalytic converter in the arrangement by determining with the pre-catalytic converter lambda probe the start of a time interval over which integration takes place, and determining the actual end time of the integration by adding the delay time to an end time determined from an output signal of the post-catalytic converter lambda probe.

    摘要翻译： 预催化转换器λ探针的输出信号和控制器的输出信号用于确定预催化转换器λ探针的固有延迟时间，例如由于探针老化，通过测量例如， 这些输出信号中最大值之间的间隔。 预催化转化器λ探针安装在其中在受控条件下运行的内燃机的排气系统中。 确定的延迟时间可以用于通过使用催化剂转换器λ探针确定在其上进行积分的时间间隔的开始来确定与催化转化器相关联的氧储存器的储氧能力，并且确定 通过将延迟时间添加到由催化后转换器λ探针的输出信号确定的结束时间的积分的实际结束时间。