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206 条记录 (耗时 0.05 秒)

    CATALYST MONITORING SYSTEM AND METHOD
    23.
    发明申请
    CATALYST MONITORING SYSTEM AND METHOD 审中-公开
    催化监测系统和方法

    公开(公告)号：US20090320454A1

    公开(公告)日：2009-12-31

    申请号：US12309838

    申请日：2007-08-13

    申请人： Hiroshi Sawada ,  Tsunenobu Hori

    发明人： Hiroshi Sawada ,  Tsunenobu Hori

    IPC分类号： F02D41/00 ,  F01N11/00 ,  G01M15/10

    CPC分类号： F02D41/0275 ,  F01N3/0814 ,  F01N3/0864 ,  F01N3/103 ,  F01N11/007 ,  F01N13/009 ,  F01N13/011 ,  F01N2550/03 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1462 ,  F02D2200/0806 ,  F02D2200/0811 ,  F02D2200/0814 ,  F02D2200/0816 ,  Y02T10/20

    摘要： A total amount of NOX that flows into an NOX catalyst between the time that air-fuel ratio control ends and the time that the air-fuel ratio control starts the next time, is obtained. A total stored amount, which is the sum of an oxygen stored amount and an stored amount in the NOX catalyst before the air-fuel ratio control started, is calculated based on the amount of reducing agent that has flowed into the NOX catalyst during the air-fuel ratio control. The oxygen stored amount is calculated by extrapolating a relationship between the total amount of NOX and the total stored amount. The relationship is established beforehand by executing the air-fuel ratio control with at least two levels.

    摘要翻译： 获得在空燃比控制结束时间和下一次空燃比控制开始的时间之间流入NOX催化剂的NO x的总量。 基于在空气中流入NOX催化剂的还原剂的量，计算在空燃比控制开始之前的总存储量，其为氧气储存量与NOX催化剂中的储存量的总和 - 燃料比率控制。 通过外推NOX总量与总存储量之间的关系来计算氧气储存量。 通过以至少两个级别执行空燃比控制来事先建立该关系。

    FAULT DETECTION SYSTEM FOR PM TRAPPER
    24.
    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

    申请人： Daisuke Shibata ,  Hiroshi Sawada ,  Keisuke Fukuoka

    发明人： Daisuke Shibata ,  Hiroshi Sawada ,  Keisuke Fukuoka

    IPC分类号： F01N11/00 ,  G01M15/10

    CPC分类号： B01D46/0086 ,  B01D2279/30 ,  F01N11/002 ,  F01N2550/04 ,  F01N2560/06 ,  Y02T10/47

    摘要： 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.

    摘要翻译： 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。

    Signal separation method, signal separation device and recording medium
    26.
    发明授权
    Signal separation method, signal separation device and recording medium 失效
    信号分离方法，信号分离装置和记录介质

    公开(公告)号：US07496482B2

    公开(公告)日：2009-02-24

    申请号：US10539609

    申请日：2004-09-01

    申请人： Shoko Araki ,  Hiroshi Sawada ,  Shoji Makino ,  Ryo Mukai

    发明人： Shoko Araki ,  Hiroshi Sawada ,  Shoji Makino ,  Ryo Mukai

    IPC分类号： G06F15/00

    CPC分类号： G10L21/0272 ,  G06K9/6245

    摘要： A method and a device for signal separation. First, values of signals observed by M sensors are transformed into frequency domain values, and these frequency domain values are used to calculate relative values of the observed values between the sensors at each frequency. These relative values are clustered into N clusters, and the representative value of each cluster is calculated. Then, using these representative values, a mask is produced to extract the values of the signals emitted by V (1≦V≦M) signal sources from the frequency-domain signal values, and this mask is applied to the frequency-domain signal values. After that, if V=1 then the limited signal is output directly as a separated signal, while if V≧2 then the separated values are obtained by separating this limited signal with separation techniques such as ICA.

    摘要翻译： 一种用于信号分离的方法和装置。 首先，将M个传感器观察到的信号值变换为频域值，并使用这些频域值来计算每个频率下传感器之间的观测值的相对值。 将这些相对值聚类为N个簇，并计算每个簇的代表值。 然后，使用这些代表值，产生掩模，以从频域信号值中提取由V（1 <= V <= M）个信号源发射的信号的值，并将该掩码应用于频域 信号值。 之后，如果V = 1，则限制信号作为分离信号直接输出，而如果V> = 2，则通过用ICA等分离技术分离该限制信号来获得分离的值。

    Signal Separation Device, Signal Separation Method, Signal Separation Program and Recording Medium
    28.
    发明申请
    Signal Separation Device, Signal Separation Method, Signal Separation Program and Recording Medium 有权
    信号分离装置，信号分离方法，信号分离程序和记录介质

    公开(公告)号：US20080215651A1

    公开(公告)日：2008-09-04

    申请号：US10594983

    申请日：2006-02-07

    申请人： Hiroshi Sawada ,  Shoko Araki ,  Ryo Mukai ,  Shoji Makino

    发明人： Hiroshi Sawada ,  Shoko Araki ,  Ryo Mukai ,  Shoji Makino

    IPC分类号： G06F17/14

    CPC分类号： G10L21/0272 ,  G06K9/6245 ,  G10L15/20 ,  G10L2021/02165

    摘要： A frequency domain transforming section 2 transforms mixed signals observed by multiple sensors into mixed signals in the frequency domain, a complex vector generating section 3 generates a complex vector by using the frequency-domain mixed signals, a normalizing section 4 generates a normalized vector excluding frequency dependence of the complex vector, and a clustering section 5 clusters the normalized vectors to generate clusters. Then, a separated signal generating section 6 generates separated signals in the frequency domain by using information about the clusters and a time domain transforming section 7 transforms the separated signals in the frequency domain into separated signals in the time domain.

    摘要翻译： 频域变换部2将由多个传感器观测到的混合信号变换为频域的混合信号，复矢量生成部3通过使用频域混合信号生成复矢量，归一化部4生成除频率以外的归一化矢量 复合向量的依赖性，并且聚类部分5聚集归一化向量以生成聚类。 然后，分离信号生成部6通过使用关于簇的信息来生成频域的分离信号，时域变换部7将频域中的分离信号变换为时域中的分离信号。

    Air Fuel Ratio Sensor Deterioration Determination System for Compression Ignition Internal Combustion Engine
    29.
    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

    申请人： Hiroshi Sawada ,  Daisuke Shibata

    发明人： Hiroshi Sawada ,  Daisuke Shibata

    IPC分类号： G01M15/10

    CPC分类号： F01N3/0814 ,  F01N3/0842 ,  F01N13/0097 ,  F01N2550/00 ,  F01N2560/02 ,  F01N2610/03 ,  F02D41/0275 ,  F02D41/028 ,  F02D41/1454 ,  F02D41/1474 ,  F02D41/1495

    摘要： 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.

    摘要翻译： 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。