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    • 51. 发明授权
    • Delay circuit
    • 延时电路
    • US4914326A
    • 1990-04-03
    • US155541
    • 1988-02-12
    • Shigeru KikudaHiroshi MiyamotoMichihiro Yamada
    • Shigeru KikudaHiroshi MiyamotoMichihiro Yamada
    • H01L27/092H01L21/8238H03K5/00H03K5/04H03K5/13H03K19/0948
    • H03K5/133H03K2005/00195
    • A delay circuit having a complementary insulated gate device comprises an inverter (10) having a series connection of a p type field effect transistor Q3 and an n type field effect transistor Q4 and a transmission gate (20) having a parallel connection of a p type field effect transistor Q1 and an n type field effect transistor Q2 connected to the preceding stage of the inverter (10), and the gates of the transistors Q1 and Q2 are connected together to an output terminal (3). The logical threshold voltage of the inverter (10) is set at a higher value in the range of the input voltage of the inverter (10). There is a peculiar period in which the transistors Q1 and Q2 of the transmission gate (20) transmit only a little increase of the input voltage to the inverter (10) during the increase of the input voltage. Due to the existence of this peculiar period, this circuit outputs a delayed output signal only when the input voltage increases. In addition, the rise time and fall time of the output signal are short.
    • 具有互补绝缘栅极器件的延迟电路包括具有ap型场效应晶体管Q3和n型场效应晶体管Q4的串联连接的反相器(10)和具有ap型场效应的并联连接的传输门(20) 晶体管Q1和连接到反相器(10)的前级的n型场效应晶体管Q2,并且晶体管Q1和Q2的栅极连接到输出端子(3)。 在逆变器(10)的输入电压的范围内,将逆变器(10)的逻辑门限电压设定为较高的值。 在输入电压增加期间,传输门(20)的晶体管Q1和Q2仅传输到逆变器(10)的输入电压的一个特殊周期。 由于存在这个特殊周期,该电路仅在输入电压增加时输出延迟的输出信号。 另外,输出信号的上升时间和下降时间短。
    • 54. 发明授权
    • Inter-cylinder air-fuel ratio imbalance determining apparatus for internal combustion engine
    • 用于内燃机的缸内空燃比不平衡确定装置
    • US09194316B2
    • 2015-11-24
    • US13612310
    • 2012-09-12
    • Hiroshi MiyamotoYasushi IwazakiShuntaro OkazakiKenji Suzuki
    • Hiroshi MiyamotoYasushi IwazakiShuntaro OkazakiKenji Suzuki
    • G06F7/00G06F17/00F02D41/00F02D41/14
    • F02D41/0085F02D41/1443F02D41/1454F02D41/1456F02D41/1495
    • An inter-cylinder air-fuel ratio imbalance determining apparatus for an internal combustion engine includes an air-fuel ratio sensor; fuel injection valves; an instructed fuel injection amount control unit; and an imbalance determination unit configured: to acquire a time-differential-value corresponding value that is an amount of change per predetermined time in an output value of the sensor or a detected air-fuel ratio represented by the output value; to acquire a positive gradient corresponding value based on a positive value of the time-differential-value corresponding value; to acquire a negative gradient corresponding value based on a negative value of the time-differential-value corresponding value; to determine an imbalance determination threshold based on a magnitude of a ratio of the negative gradient corresponding value to the positive gradient corresponding value; and to determine whether inter-cylinder air-fuel ratio imbalance has occurred by comparing a magnitude of the negative gradient corresponding value with the imbalance determination threshold.
    • 用于内燃机的气缸间空燃比不平衡确定装置包括空燃比传感器; 燃油喷射阀; 指示燃料喷射量控制单元; 以及不平衡确定单元,被配置为获取作为所述传感器的输出值中的每预定时间的变化量的时间微分值对应值或由所述输出值表示的检测到的空燃比; 基于时间微分值对应值的正值来获取正梯度对应值; 基于时间 - 微分值对应值的负值来获取负梯度对应值; 基于负梯度对应值与正梯度对应值的比值的大小来确定不平衡确定阈值; 并且通过将负梯度对应值的大小与不平衡确定阈值进行比较来确定是否发生了缸间空燃比不平衡。
    • 55. 发明授权
    • Air-fuel ratio imbalance among cylinders determining apparatus for an internal combustion engine
    • 用于内燃机的气缸确定装置之间的空燃比不平衡
    • US09194315B2
    • 2015-11-24
    • US13144194
    • 2009-11-26
    • Yasushi IwazakiHiroshi MiyamotoHiroshi SawadaKeiichiro Aoki
    • Yasushi IwazakiHiroshi MiyamotoHiroshi SawadaKeiichiro Aoki
    • F01N3/10G01N7/00F02D41/00G01N27/419F02D41/14
    • F02D41/0085F02D41/1441F02D41/1454F02D41/1475G01N27/419
    • An air-fuel ratio imbalance among cylinders determining apparatus (a determining apparatus) according to an aspect of the present invention, obtains a parameter X for imbalance determination which becomes larger as a variation of an air-fuel ratio of an exhaust gas passing through a position at which the air-fuel ratio sensor is disposed becomes larger, based on an output value Vabyfs of an air-fuel ratio sensor 67. At the same time, the determining apparatus changes a target air-fuel ratio which is a target value of an air-fuel ratio of a mixture supplied to an engine to “an air-fuel ratio (a target rich air-fuel ratio AFrich or a target lean air-fuel ratio AFlean) other than a stoichiometric air-fuel ratio” from the stoichiometric air-fuel ratio. Accordingly, the determining apparatus can obtain the parameter X for imbalance determination in a state in which a responsivity of the air-fuel ratio sensor 67 is not low. As a result, it can make a determination on the air-fuel ratio imbalance among cylinders with high accuracy.
    • 根据本发明的一个方面的气缸确定装置(确定装置)之间的空燃比不平衡获得作为不平衡确定的参数X随着通过的排气的空燃比的变化而变大 基于空燃比传感器67的输出值Vabyfs,设置空燃比传感器的位置变大。同时,确定装置将作为目标值的目标空燃比 向发动机供给的混合物的空燃比为“理论空燃比以外的理论空燃比以外的空燃比(目标浓空燃比AFrich或目标稀空燃比AFlean)” 空燃比。 因此,在空燃比传感器67的响应度不低的状态下,确定装置可以获得用于不平衡确定的参数X. 因此,可以高精度地确定气缸之间的空燃比不平衡。
    • 56. 发明授权
    • Inter-cylinder air-fuel ratio imbalance determination apparatus for an internal combustion engine
    • 用于内燃机的缸内空燃比不平衡确定装置
    • US08452521B2
    • 2013-05-28
    • US13509372
    • 2009-11-12
    • Yasushi IwazakiHiroshi MiyamotoHiroshi SawadaKeiichiro Aoki
    • Yasushi IwazakiHiroshi MiyamotoHiroshi SawadaKeiichiro Aoki
    • B60T7/12
    • F02D41/0085F02D41/1441F02D41/1455
    • An inter-cylinder air-fuel imbalance determination apparatus according to the present invention obtains, based on the output value of the air-fuel ratio sensor, an air-fuel ratio fluctuation indicating amount whose absolute value becomes larger as a fluctuation of the air-fuel ratio of the exhaust gas passing through the air-fuel ratio sensor becomes larger, and further obtains an imbalance determination parameter which becomes larger as an absolute value of the air-fuel ratio fluctuation indicating amount becomes larger. In addition, the determination apparatus obtains an average value of the air-fuel ratio of the exhaust gas when the imbalance determination parameter is being obtained, and obtains an imbalance determination threshold which becomes smaller as the average value of the air-fuel ratio is closer to the stoichiometric air-fuel ratio. The determination apparatus determines that an inter-cylinder air-fuel ratio imbalance state has been occurring when the imbalance determination parameter is larger than the imbalance determination threshold.
    • 根据本发明的气缸内空气燃料不平衡确定装置,基于空燃比传感器的输出值,获得空气 - 燃料比传感器的绝对值变大的空燃比变动指示量, 通过空燃比传感器的废气的燃料比变大,进一步得到随着空燃比变动指示量的绝对值变大而变大的不平衡判定参数。 此外,确定装置获得当获得不平衡确定参数时排气的空燃比的平均值,并且获得当空燃比的平均值接近时变小的不平衡确定阈值 达到化学计量空燃比。 当不平衡确定参数大于不平衡确定阈值时,确定装置确定已经发生了缸间空燃比不平衡状态。
    • 58. 发明申请
    • INTER-CYLINDER AIR-FUEL RATIO IMBALANCE DETERMINATION APPARATUS FOR INTERNAL COMBUSTION ENGINE
    • 用于内燃机的缸内空燃比不平衡测定装置
    • US20120215427A1
    • 2012-08-23
    • US13505849
    • 2009-11-05
    • Hiroshi MiyamotoYasushi IwazakiHiroshi Sawada
    • Hiroshi MiyamotoYasushi IwazakiHiroshi Sawada
    • F02D41/26F02M25/07
    • F02D41/0085F02D41/0065F02D41/1454Y02T10/47
    • An inter-cylinder air-fuel ratio imbalance determination apparatus (determination apparatus) according to the present invention obtains, as an “EGR supplying state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt of a detected air-fuel ratio abyfs represented by an output value of an air-fuel ratio sensor when an EGR gas is being supplied, and obtains, as an “EGR stop state imbalance determination parameter”, a value corresponding to a differential value d(abyfs)dt when an EGR gas supply is being stopped. The determination apparatus obtains an “EGR-causing imbalance determination parameter Pegr” by subtracting the EGR stop state imbalance determination parameter Poff from the EGR supplying state imbalance determination parameter Pon, and determines that an inter-cylinder air-fuel ratio imbalance state has occurred due to the supply of the EGR gas when the parameter Pegr is larger than a threshold Pegrth.
    • 根据本发明的气缸内空燃比不平衡判定装置(判定装置),作为“EGR供给状态不平衡判定参数”,获得与检测到的空气 - 燃料比不平衡判定装置的差分值d(abyfs)dt对应的值, 在EGR气体供给时由空燃比传感器的输出值表示的燃料比abyfs,作为“EGR停止状态不平衡判定参数”,获得与差分值d(abyfs)dt对应的值 正在停止EGR气体供应。 确定装置通过从EGR供应状态不平衡确定参数Pon中减去EGR停止状态不平衡确定参数Poff而获得“EGR导致不平衡确定参数Pegr”,并且确定缸间空燃比不平衡状态已经发生 当参数Pegr大于阈值Pegrth时,供应EGR气体。
    • 59. 发明授权
    • Ultrasonic wave testing method and ultrasonic testing device using this method
    • 超声波检测方法及超声波检测装置采用该方法
    • US08225668B2
    • 2012-07-24
    • US11988304
    • 2006-06-30
    • Hideki YabushitaTatsuyuki NagaiShigeyuki MatsubaraNorio NemotoHiroshi Miyamoto
    • Hideki YabushitaTatsuyuki NagaiShigeyuki MatsubaraNorio NemotoHiroshi Miyamoto
    • G01N29/26
    • G01N29/2456G01N29/223G01N29/2487G01N2291/0231G01N2291/0425G01N2291/0427G01N2291/056G01N2291/101G01N2291/2693G01N2291/2694
    • An ultrasonic wave propagating method capable of propagating plate waves between a probe and a test piece despite variations in the thickness or the surface angle of a test piece, and an ultrasonic propagating device and an ultrasonic testing device using this method. Ultrasonic waves are propagated between a probe (20) for transmitting or receiving ultrasonic waves and a test piece (100) for propagating plate waves. When propagating ultrasonic waves, a probe that can set an ultrasonic wave incident angle from the probe (20) to the test piece (100) and/or an ultrasonic wave receivable angle from the test piece to the probe in a plurality of states is used. A focal point type probe may be used as the above probe (20). When this type of a probe is used, it is oriented such that an oscillating direction axis L1 in the direction of which a reference axis along the propagation route of ultrasonic waves is oscillated around the focal point of the probe crosses the propagation element surface L2 including the test piece surface of a ultrasonic wave propagation element.
    • 尽管测试件的厚度或表面角度发生变化,但是使用该方法的超声波传播装置和超声波检测装置,能够在探针和试验片之间传播平板波的超声波传播方法。 超声波在用于发送或接收超声波的探针(20)和用于传播平板波的测试片(100)之间传播。 当传播超声波时,可以使用能够以多个状态从探头(20)到测试件(100)设置超声波入射角和/或从测试片到探针的超声波可接收角度的探针 。 可以使用焦点型探针作为上述探针(20)。 当使用这种类型的探针时,其取向为使得沿着超声波的传播路径的参考轴在探针的焦点周围摆动的方向的振动方向轴线L1穿过传播元件表面L2,包括: 超声波传播元件的测试片表面。