INTERNAL COMBUSTION ENGINE EXHAUST GAS CONTROL APPARATUS AND CONTROL METHOD THEREOF
    11.
    发明申请
    INTERNAL COMBUSTION ENGINE EXHAUST GAS CONTROL APPARATUS AND CONTROL METHOD THEREOF 审中-公开
    内燃机排气控制装置及其控制方法

    公开(公告)号:US20100186377A1

    公开(公告)日:2010-07-29

    申请号:US12668248

    申请日:2008-07-10

    Abstract: An exhaust gas control apparatus includes a PM trapping filter provided in an exhaust gas passage of an internal combustion engine, an oxygen concentration sensor provided upstream of the filter, a device that estimates the air-fuel ratio of exhaust gas supplied to the oxygen concentration sensor, and a device that estimates the amount of PM trapped in the filter based on the estimated exhaust gas air-fuel ratio and the oxygen concentration sensor output. The amount of PM trapped in the filter is estimated using the fact that the oxygen concentration sensor output value changes according to the exhaust gas air-fuel ratio and the amount of PM accumulated on the oxygen concentration sensor. As a result, the structure of the exhaust passage is able to be kept simple because only an oxygen concentration sensor is added upstream of the filter.

    Abstract translation: 排气控制装置包括设置在内燃机的排气通道中的PM捕集过滤器,设置在过滤器上游的氧浓度传感器,估计供给到氧浓度传感器的废气的空燃比的装置 以及基于估计的废气空燃比和氧浓度传感器输出来估计捕集在过滤器中的PM的量的装置。 通过氧浓度传感器输出值根据废气空燃比和在氧浓度传感器上累积的PM的量而变化的事实来估计捕集在过滤器中的PM的量。 结果,由于只有氧浓度传感器被添加到过滤器的上游,所以排气通道的结构能够保持简单。

    FAULT DETECTION SYSTEM FOR PM TRAPPER
    12.
    发明申请
    FAULT DETECTION SYSTEM FOR PM TRAPPER 审中-公开
    故障检测系统

    公开(公告)号:US20090205318A1

    公开(公告)日:2009-08-20

    申请号:US12305123

    申请日:2007-06-18

    Abstract: An object of the present invention is to provide a technology that enables to detect a fault of a PM trapper with improved accuracy. According to the present invention, a plurality of temperature sensors 10 are provided in an exhaust passage 9 just downstream of a PM trapper 17 in such a way that their temperature detection elements are positioned on a plane that is perpendicular to an imaginary center axis of the exhaust passage 9. A change in the radial direction temperature distribution of the exhaust gas flowing out of the PM trapper 17 upon occurrence of a fault in the PM trapper 17 is detected from measurement values of the temperature sensors 10, and a fault of the PM trapper 17 is detected based on this radial direction temperature distribution. Since the measurement values of the temperature sensors 10 are unlikely to be affected by the amount of PM deposited on the PM trapper 17, detection of a fault of the PM trapper 17 can be achieved with improved accuracy.

    Abstract translation: 本发明的目的是提供一种技术,其能够以提高的精度检测PM捕集器的故障。 根据本发明,多个温度传感器10设置在PM捕集器17正下游的排气通道9中,使得它们的温度检测元件位于垂直于 在PM捕集器17发生故障时从PM捕集器17流出的废气的径向温度分布的变化是从温度传感器10的测量值和PM的故障中检测出的 基于该径向温度分布检测捕集器17。 由于温度传感器10的测量值不太可能受到PM捕集器17上沉积的PM的影响,所以可以提高精度来检测PM捕集器17的故障。

    Air Fuel Ratio Sensor Deterioration Determination System for Compression Ignition Internal Combustion Engine
    13.
    发明申请
    Air Fuel Ratio Sensor Deterioration Determination System for Compression Ignition Internal Combustion Engine 有权
    空气燃料比传感器劣化测定系统压缩点火内燃机

    公开(公告)号:US20080028829A1

    公开(公告)日:2008-02-07

    申请号:US11630863

    申请日:2005-06-29

    Abstract: In a compression ignition internal combustion engine provided with an NOx storage-reduction catalyst on an exhaust system, when the air fuel ratio of the exhaust gas being in a lean state is controlled to a rich state, a response time (ResS) from a time point an air fuel ratio sensor detects a first air fuel ratio (AF1), which is leaner than a stoichiometric air fuel ratio (AFS), to a time point the air fuel ratio sensor detects a second air fuel ratio (AF2), which is equal to or leaner than the stoichiometric air fuel ratio (AFS) and richer than the first air fuel ratio (AF1). When the response time (ResS) exceeds a stoichiometric air fuel ratio shift reference time (StdS), a determination is made that the air fuel ratio sensor is degraded.

    Abstract translation: 在排气系统中设有NOx吸留还原催化剂的压缩点火式内燃机中,当将处于稀薄状态的排气的空燃比控制为浓状态时,从时间起响应时间(ResS) 指出空燃比传感器将空燃比传感器检测到第二空气燃料比(AF2)的时间点检测为比化学计量空燃比(AFS)更稀的第一空燃比(AF 1) 其等于或者比理论空燃比(AFS)更稀,并且比第一空气燃料比(AF 1)更浓。 当响应时间(ResS)超过理论空燃比偏移基准时间(StdS)时,确定空燃比传感器劣化。

    Cutting member
    18.
    发明授权
    Cutting member 失效
    切割构件

    公开(公告)号:US06872234B2

    公开(公告)日:2005-03-29

    申请号:US09734275

    申请日:2000-12-11

    Inventor: Daisuke Shibata

    CPC classification number: C23C28/044 C23C30/005 Y10T407/26 Y10T407/27

    Abstract: The cutting member comprises WC, two or more solid solutions of WC and compounds selected from carbides, nitrides and carbonitrides of metals of the groups 4a, 5a and 6a in the Periodic Table, and at least one metal of the iron group; and at least one of the two or more solid solutions being a solid solution having a high Nb or Zr content, whereby the wear resistance and plastic deformation resistance are improved in case of cutting hardly machinable materials such as stainless steel, thereby making it possible to prolong the service life of the cutting member.

    Abstract translation: 切割构件包括WC,两种或多种WC的固溶体和选自周期表中的基团4a,5a和6a的金属的碳化物,氮化物和碳氮化物的化合物和至少一种铁基金属; 并且所述两种以上的固溶体中的至少一种为具有高Nb或Zr含量的固溶体,由此在切削难以加工的材料如不锈钢的情况下,耐磨损性和塑性变形性得到改善, 延长切割构件的使用寿命。

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