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公开(公告)号：US5182943A
公开(公告)日：1993-02-02
申请号：US616493
申请日：1990-11-21
申请人： Wataru Fukui , Toshio Iwata , Yutaka Ohashi , Masayuki Ikeuchi
发明人： Wataru Fukui , Toshio Iwata , Yutaka Ohashi , Masayuki Ikeuchi
CPC分类号： F02D41/009 , F02D41/36 , F02P15/008 , F02P7/0775 , Y02T10/44
摘要： A cylinder identification apparatus for a multi-cylinder internal combustion engine. The apparatus includes the following units. A reference signal generator that senses the rotation of an engine crankshaft and generates a reference signal indicating each time the crankshaft is at a prescribed rotational angle. An identification signal generator senses the rotation of the engine camshaft or other member coupled to and rotating at 1/2 the speed of the crankshaft and generates a cylinder identification signal having a different form for different cylinders of the engine. A control unit identifies each cylinder of the engine based on the form of the cylinder identification signal.
摘要翻译： 一种用于多缸内燃机的气缸识别装置。 该装置包括以下单元。 一种参考信号发生器，其感测发动机曲轴的旋转并产生每当曲轴处于规定的旋转角度时指示的参考信号。 识别信号发生器感测发动机凸轮轴或耦合到曲轴速度1/2的其它构件的旋转，并产生具有不同形式的用于发动机的不同气缸的气缸识别信号。 控制单元基于缸识别信号的形式识别发动机的每个气缸。
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2.发明授权
公开(公告)号：US5343844A
公开(公告)日：1994-09-06
申请号：US718129
申请日：1991-06-20
申请人： Wataru Fukui , Toshio Iwata , Toshio Ohsawa
发明人： Wataru Fukui , Toshio Iwata , Toshio Ohsawa
CPC分类号： F02P17/12 , G01M15/042 , F02B1/04 , F02P2017/125 , F02P3/0456
摘要： Misfiring in a cylinder of an engine can be detected with high reliability using a statistical treatment even if the level of ion current generated by a spark plug upon ignition thereof is affected by noise. An ion current, which is generated when a spark plug for a cylinder discharges, is detected to provide a corresponding voltage which is then integrated or peak held to produce a current component signal which is generated for a predetermined time from the time of discharge of the spark plug. The current component signal is used as misfiring information and compared with a prescribed threshold so as to determine whether there is misfiring in the cylinder. Misfirings thus detected are counted so as to evaluate the state or extent of misfiring in the cylinder. If the state of misfiring is serious, the fuel supply to the cylinder is stopped. If, however, it is light, an appropriate measure for optimizing the operation of the misfiring cylinder is taken to remedy such a situation and recover normal combustion therein.
摘要翻译： 即使在点火时由火花塞产生的离子电流的水平受噪声影响，也可以使用统计处理以高可靠性检测发动机气缸中的点火。 检测当汽缸放电火花塞放电时产生的离子电流，以提供对应的电压，然后将该电压积分或峰值保持以产生从放电时间起预定时间内产生的电流分量信号 火花塞 电流分量信号用作失火信息，并与规定的阈值进行比较，以确定气缸中是否发生点火。 对这样检测到的错误进行计数，以评估气缸中失火的状态或程度。 如果失火状态严重，则停止向气缸供油。 然而，如果它很轻，则采取适当措施来优化失火气缸的操作，以补救这种情况并恢复其中的正常燃烧。
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3.发明授权
公开(公告)号：US5076234A
公开(公告)日：1991-12-31
申请号：US605308
申请日：1990-10-30
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
IPC分类号： F02D41/36 , F02D41/24 , F02D41/26 , F02D41/34 , F02D45/00 , F02P3/045 , F02P5/15 , F02P7/073 , F02P7/077
CPC分类号： F02D41/009 , F02D41/2406 , F02D41/26 , F02P3/0456 , F02P7/073 , F02P7/0775
摘要： An engine control apparatus and method for accurately controlling the operation of an engine such as ignition, fuel injection, etc., particularly in the high-speed range or during a sudden change in the rotational speed of the engine. A signal generator generates a positional signal in the form of pulses representative of a reference piston position of each cylinder in synchrony with the rotation of the engine. A sensor means senses the operating conditions of the engine. A control unit in the form of a microcomputer, which includes a timer means for controlling the operations of the corresponding cylinders, calculates, based on the positional signal and the output signal of the sensor means, control times for controlling the corresponding cylinders at every reference piston position, and determine, at every reference piston position, whether the timer means has already done control on the cylinders. If the timer means has yet to do control on the cylinders, the control unit resets or updates the dimer means to new control times which are calculated at the present reference piston position for controlling the present operations of the cylinders. On the other hand, if the timer means has already done control on the cylinders, the control unit sets the timer means to new control times which are calculated at the present reference piston position for controlling the next operations of the cylinders.
摘要翻译： 一种发动机控制装置和方法，用于精确地控制诸如点火，燃料喷射等的发动机的操作，特别是在高速范围内或在发动机的转速急剧变化期间。 信号发生器以与发动机的旋转同步的每个气缸的参考活塞位置的脉冲形式产生位置信号。 传感器装置检测发动机的运行状况。 微机形式的控制单元，其包括用于控制相应气缸的操作的计时装置，基于传感器装置的位置信号和输出信号，计算每个参考下控制相应气缸的控制时间 在每个参考活塞位置确定定时器装置是否已经对气缸进行了控制。 如果定时器装置尚未对气缸进行控制，则控制单元将二聚体装置复位或更新为在当前参考活塞位置处计算的新控制时间，以控制气缸的当前操作。 另一方面，如果定时器装置已经对气缸进行控制，则控制单元将定时器装置设置为在当前参考活塞位置处计算出的新的控制时间，以控制气缸的下一操作。
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公开(公告)号：US4979485A
公开(公告)日：1990-12-25
申请号：US416303
申请日：1989-10-03
申请人： Toshio Iwata , Wataru Fukui
发明人： Toshio Iwata , Wataru Fukui
CPC分类号： F02D41/009 , F02B77/08 , F02D41/1406 , F02P7/073 , F02D2041/0092
摘要： A cylinder recognition apparatus for a multi-cylinder internal combustion engine has a position sensor which generates for each cylinder output pulses which indicate prescribed positions of the piston of the cylinder. The output pulse for a prescribed reference cylinder of the engine has a different pulse width from the pulses for the other cylinders. A cylinder recognition circuit calculates a ratio which is a function of the pulse width and the period of each output pulse. A comparator compares the ratio with a prescribed value and a cylinder is recognized on the basis of the comparison.
摘要翻译： 用于多缸内燃机的气缸识别装置具有位置传感器，该位置传感器为每个气缸产生指示气缸的活塞的规定位置的脉冲。 发动机规定的参考气缸的输出脉冲与其他气缸的脉冲具有不同的脉冲宽度。 气缸识别电路计算作为脉冲宽度和每个输出脉冲的周期的函数的比率。 比较器将比率与规定值进行比较，并且基于比较来识别气缸。
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公开(公告)号：US06339324B1
公开(公告)日：2002-01-15
申请号：US09659452
申请日：2000-09-11
申请人： Hiroshi Sakanoue , Noriaki Hayashi , Izuru Shinjo , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
发明人： Hiroshi Sakanoue , Noriaki Hayashi , Izuru Shinjo , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
IPC分类号： G01P344
CPC分类号： G01P3/487
摘要： The invention provides a magnetic object motion sensor which can operate with high accuracy not only when a magnetic object moves at high speeds but also even when it moves at low speeds, which can be produced with a greater production tolerance and a greater dimensional tolerance. The magnetic object motion sensor includes: magnetoelectric transducer elements disposed opposite protrusions of a moving magnetic object; a magnet for generating bias magnetic flux toward the magnetoelectric transducer elements; unbalanced bias producing means for producing imbalance in the magnetic field sensitivity between the magnetoelectric transducer elements; a differential amplifier for amplifying in a differential fashion the electric signals output by the magnetoelectric transducer elements; a waveform shaping circuit for converting the differential signal output by the differential amplifier to a pulse signal corresponding to the edges of the magnetic material protrusion; the unbalanced bias producing means producing a difference in the amplitude of the magnetic flux density between that applied to one element of the pair of magnetoelectric transducer elements and that applied to the other element so that the difference in the electric signal level corresponding to the difference in the amplitude of the magnetic flux density becomes greater than the hysteresis of the waveform shaping circuit, thereby, in effect, introducing imbalance in the sensitivity between the magnetoelectric transducer elements.
摘要翻译： 本发明提供了一种磁性物体运动传感器，其不仅在磁性物体以高速移动时，而且即使当其以低速移动时也能以高精度进行操作，这可以以更大的制造公差和更大的尺寸公差产生。 磁性物体运动传感器包括：与运动的磁性物体相对的突起设置的磁电换能器元件; 用于向磁电换能器元件产生偏磁通的磁体; 用于产生磁电换能器元件之间的磁场灵敏度不平衡的不平衡偏压产生装置; 用于以差分方式放大由电磁换能器元件输出的电信号的差分放大器; 波形整形电路，用于将由差分放大器输出的差分信号转换为对应于磁性材料突起的边缘的脉冲信号; 所述不平衡偏置产生装置产生施加到所述一对磁电换能器元件中的一个元件之间的磁通密度的振幅和施加到另一元件的磁通密度的差异，使得与所述另一元件相对应的电信号电平的差异 磁通密度的振幅变得大于波形整形电路的滞后，从而实际上引入了磁电换能器元件之间的灵敏度不平衡。
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公开(公告)号：US5929629A
公开(公告)日：1999-07-27
申请号：US927256
申请日：1997-09-11
摘要： The invention provides a high-accuracy and high-reliability magnetic sensor which can be produced with a high production yield at a low cost. The magnetic sensor includes: a main sensor unit including: an intermediate part in the form of a short rectangular prism serving as a fitting part; a seating formed on one end face of the intermediate part such that the seating has a step shape and such that the exterior circumferential surface of the seating serves as a fitting-in portion; a main part disposed at a right angle on the principal surface of the seating, the main part including: a sensor element disposed on the end of the main part; a permanent magnet disposed adjacent to the sensor element; and an electronic component; and a connector extending from the intermediate part; and a case including: a sleeve in the form of a cylinder with a closed end and an open end, the sleeve having a receiving portion formed on the open end, the sleeve having a sealed space serving as a space in which the main part is placed; and a holding part extending from the sleeve and including a receiving part and a separation stopper; wherein the magnetic sensor is characterized in that a liquid reservoir space is formed between the fitting-in portion and the receiving portion along the circumference, and the liquid reservoir space is filled with liquid packing.
摘要翻译： 本发明提供了一种高精度和高可靠性的磁传感器，其可以以低成本生产高产率。 磁传感器包括：主传感器单元，包括：作为配合部分的短矩形棱镜形式的中间部分; 在所述中间部的一个端面形成的座部，使得所述座部具有台阶形状，并且所述座部的所述外周面形成为嵌合部; 所述主体部分以直角设置在所述座的主表面上，所述主要部分包括：传感器元件，设置在所述主要部分的端部; 设置在传感器元件附近的永磁体; 和电子元件; 以及从所述中间部延伸的连接器。 以及壳体，其包括：具有封闭端和开口端的圆柱形的套筒，所述套筒具有形成在所述开口端上的容纳部分，所述套筒具有用作主要部分的空间的密封空间 放置 以及保持部，其从所述套筒延伸并且包括容纳部和分离止动件; 其特征在于，所述磁性传感器的特征在于，在所述安装部与所述容纳部之间形成有沿着所述圆周的液体储存空间，所述储液空间填充有液体填充物。
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公开(公告)号：US5821744A
公开(公告)日：1998-10-13
申请号：US630584
申请日：1996-04-10
申请人： Izuru Shinjo , Noriaki Hayashi , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
发明人： Izuru Shinjo , Noriaki Hayashi , Naoki Hiraoka , Wataru Fukui , Yutaka Ohashi
CPC分类号： G01P1/026 , B29C45/14655 , G01P1/00 , G01P3/487 , G01P3/488 , Y10T29/4902 , Y10T29/49121 , Y10T29/49158
摘要： A rotation sensor is provided which is inexpensive and has excellent performance, high workability, and high reliability. Specifically, the rotation sensor contains a magnetoelectric conversion device, a base, an insert conductor, a surface mount electrode part, an electronic component, and a connector part. The magnetoelectric conversion device senses a magnetic flux change associated with a rotation of a magnetic rotation body, and the base is made of resin and holds the magnetoelectric conversion device. The insert conductor is insert-molded in the base, and an exposed part of the insert conductor is exposed to a surface of the base. The surface mount electrode part is formed by at least the exposed part of the insert conductor and is connected to the magnetoelectric conversion device. The electronic component is mounted on the surface mount electrode part, and the connector part is formed by using an end of the insert conductor as a terminal electrode.
摘要翻译： 提供了一种价格低廉，性能优异，可加工性高，可靠性高的旋转传感器。 具体地，旋转传感器包括磁电转换装置，基座，插入导体，表面安装电极部件，电子部件和连接器部件。 磁电转换装置感测与磁旋转体的旋转相关联的磁通量变化，并且基座由树脂制成并保持磁电转换装置。 插入导体嵌入成型在基座中，并且插入导体的暴露部分暴露于基部的表面。 表面安装电极部分至少由插入导体的露出部分形成，并连接到磁电转换装置。 电子部件安装在表面安装电极部分上，并且通过使用插入导体的端部作为端子电极来形成连接器部分。
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公开(公告)号：US5801529A
公开(公告)日：1998-09-01
申请号：US740623
申请日：1996-10-31
IPC分类号： G01B7/30 , F02D35/00 , G01B7/00 , G01D5/14 , G01D5/16 , G01D5/18 , G01D5/245 , G01R33/09 , G01B7/14 , G01R33/06 , F62B53/06
CPC分类号： G01D5/147
摘要： The invention provides a sensing device capable of outputting a correct signal precisely corresponding to a particular position (angle) of, for example a protruding or recessed portion of a rotating member made of a magnetic material. The sensing device includes: a magnet for generating magnetic field; a rotary member of magnetic material for changing a magnetic field generated by the magnet, the rotary member of magnetic material being disposed a predetermined distance apart from the magnet; and a giant magnetoresistance device for detecting the varying magnetic field, the operating range of the giant magnetoresistance device being set such that the change in resistance of the giant magnetoresistance device is uniform over the entire operating range in both directions of change in the magnetic field induced by the rotary member of magnetic material, wherein the giant magnetoresistance device is disposed in such a manner that the center of the magnetic field sensing plane of the giant magnetoresistance device deviates from the center of the magnet in a direction parallel to a plane containing the displacement direction of the rotary member of magnetic material.
摘要翻译： 本发明提供一种感测装置，其能够输出精确对应于由磁性材料制成的旋转构件的突出或凹陷部分的特定位置（角度）的正确信号。 感测装置包括：用于产生磁场的磁体; 用于改变由所述磁体产生的磁场的磁性材料的转动件，所述磁性材料的所述转动件与所述磁体隔开预定距离; 以及用于检测变化的磁场的巨磁电阻装置，巨磁电阻装置的工作范围被设定为使得巨磁电阻装置的电阻变化在整个工作范围内在磁场变化的两个方向上是均匀的 通过磁性材料的旋转构件，其中巨磁电阻装置以这样的方式设置，使得巨磁电阻装置的磁场感测平面的中心在与包含位移的平面平行的方向上偏离磁体的中心 磁性材料的旋转构件的方向。
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9.发明授权
公开(公告)号：US5351528A
公开(公告)日：1994-10-04
申请号：US49581
申请日：1993-04-21
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
摘要： Misfiring in an engine cylinder can be detected based on the pressure therein as sensed by a pressure sensor with a high degree of reliability at any time even if the output signal of the pressure sensor contains an offset component superposed on a pressure component representative of the actual cylinder pressure. In one form, the pressure sensor output is differentiated to eliminate the influence of the offset component and then processed to generate a power stroke pressure information signal in the form of the time of a pressure-change peak in the differentiated pressure sensor output or an integrated value of the differentiated output, which is then compared with a threshold so as to determine whether misfiring took place in the cylinder. In another form, the offset component is calculated based on the pressure in the cylinder at two different crank angles during a compression stroke, and it is then removed from the pressure sensor output and compared with a threshold or it may be integrated for a prescribed crank angle range around TDC before comparison with the threshold. In a further form, an expected pressure in the cylinder at a third crank angle during a power stroke is calculated based on the cylinder pressures at first and second crank angles during a compression stroke preceding the power stroke, and then compared with the cylinder pressure as sensed by the pressure sensor at the third crank angle for misfiring determination.
摘要翻译： 即使压力传感器的输出信号包含叠加在代表实际的压力分量上的偏移分量，也可以基于压力传感器在任何时刻具有高可靠性的压力来检测发动机气缸中的点火 气缸压力。 在一种形式中，压力传感器输出被微分以消除偏移分量的影响，然后被处理以产生在微分压力传感器输出中的压力变化峰值时间形式的功率冲程压力信息信号或集成 差分输出的值，然后将其与阈值进行比较，以便确定在气缸中是否发生失火。 在另一种形式中，基于压缩行程期间在两个不同曲柄角处的气缸中的压力来计算偏移分量，然后将其从压力传感器输出中移除并与阈值进行比较，或者可以将其与用于规定曲柄 在TDC之前的角度范围与阈值进行比较。 在另一形式中，基于在功率冲程之前的压缩冲程期间的第一和第二曲柄角处的气缸压力来计算在功率冲程期间在第三曲柄角处的气缸中的预期压力，然后与气缸压力进行比较 由第三曲柄角度的压力传感器感测，用于进行失火判定。
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公开(公告)号：US5156125A
公开(公告)日：1992-10-20
申请号：US772709
申请日：1991-10-07
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
CPC分类号： F02D41/009 , F02P7/0675 , F02P7/0775 , F02B2075/027
摘要： A control apparatus for an engine has a crankshaft position sensor that generates an output signal indicating the rotational position of a crankshaft. The output signal has at least one discontinuous portion per rotation of the crankshaft indicating a reference position of the crankshaft. The timing of an engine operating parameter such as the timing of fuel injection or ignition is calculated and controlled so as to occur with the calculated timing using the reference position as a reference. A camshaft position sensor senses the rotation of a camshaft and generates a signal having pulses occurring between consecutive occurrences of the reference position. The cylinders of the engine are identified by counting the number of pulses occurring between the reference positions.
摘要翻译： 用于发动机的控制装置具有产生表示曲轴的旋转位置的输出信号的曲轴位置传感器。 输出信号具有至少一个不连续部分，每一转动曲轴表示曲轴的基准位置。 计算和控制诸如燃料喷射或点火的定时的发动机操作参数的定时，以便以使用参考位置作为参考的计算出的定时发生。 凸轮轴位置传感器感测凸轮轴的旋转并产生具有在参考位置的连续出现之间出现的脉冲的信号。 通过计算在参考位置之间发生的脉冲数来识别发动机气缸。
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