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1. 发明授权

US5343844A Apparatus and method for detecting misfiring in an internal combustion engine 失效
标题翻译：用于检测内燃机中的失火的装置和方法
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
IPC分类号： F02B1/04 , F02P3/045 , F02P17/12 , G01M15/04 , F02P17/00 , F02D41/22
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。

2. 发明授权

US5076234A Apparatus and method for controlling a multi-cylinder internal conbustion engine 失效
标题翻译：用于控制多缸内燃机的装置和方法
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。

3. 发明授权

US4979485A Cylinder recognition apparatus for an internal combustion engine 失效
标题翻译：用于内燃机的气缸识别装置
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
IPC分类号： F02B77/08 , F02D41/14 , F02D41/34 , F02P7/073
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。

4. 发明授权

US5351528A Apparatus and method for detecting misfiring in an internal combustion engine 失效
标题翻译：用于检测内燃机中的失火的装置和方法
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
IPC分类号： F02B3/06 , G01M15/08 , G01M15/11 , G01M15/00
CPC分类号： G01M15/08 , G01M15/11 , F02B3/06
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。

5. 发明授权

US5156125A Engine control apparatus 失效
标题翻译：发动机控制装置
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
IPC分类号： F02B75/02 , F02D41/34 , F02P7/067 , F02P7/077
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。

6. 发明授权

US5121729A Knocking control method and apparatus for internal combustion engine 失效
标题翻译：内燃机起动控制方法及装置
公开(公告)号：US5121729A
公开(公告)日：1992-06-16
申请号：US747045
申请日：1991-08-19
申请人： Atsuko Hashimoto , Wataru Fukui , Toshio Iwata
发明人： Atsuko Hashimoto , Wataru Fukui , Toshio Iwata
IPC分类号： F02D45/00 , F02B1/04 , F02P5/152 , F02P5/153 , G01L23/22
CPC分类号： F02P5/1526 , G01L23/225 , F02B1/04 , Y02T10/46
摘要： For suppression of knocking in an internal combustion engine, an engine vibration level is periodically generated at predetermined time intervals on the basis of an output signal of a knocking sensor which is installed for detecting the engine vibration, the engine vibration level thus generated being compared with a preset sensor failure level. When the vibration level remains lower than the preset sensor failure level successively throughout a period corresponding to a predetermined number of engine cycles, a knocking sensor failure indication signal is generated to thereby allow knocking control to be precautionarily performed for the safety of the engine operation.
摘要翻译：为了抑制内燃机的撞击，基于安装用于检测发动机振动的爆震传感器的输出信号，以预定的时间间隔周期性地发动发动机振动水平，将由此产生的发动机振动水平与预设传感器故障等级。当在对应于预定数量的发动机循环的整个时间段内，当振动水平连续地低于预设的传感器故障水平时，产生爆震传感器故障指示信号，从而允许为了发动机操作的安全性而进行爆震控制。

7. 发明授权

US5070726A Cylinder recognition apparatus for a multi-cylinder internal combustion engine 失效
标题翻译：用于多缸内燃机的气缸识别装置
公开(公告)号：US5070726A
公开(公告)日：1991-12-10
申请号：US591180
申请日：1990-10-01
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
IPC分类号： F02D41/36 , F02B77/08 , F02D41/34 , F02D45/00 , F02P5/15 , F02P7/073 , F02P7/077 , G01M15/06
CPC分类号： F02D41/009 , F02B77/08 , F02P7/073 , F02P7/0775 , G01M15/06 , F02D2041/0092
摘要： An improved cylinder recognition apparatus for a multi-cylinder internal combustion engine capable of recognizing the operating states of a relatively large number of cylinders by use of two kinds of output signals of a signal generator in a short time and in a reliable manner. A signal generator generates a first signal and a second signal synchronously with the rotation of the engine, the first signal containing a plurality of positional pulses each representative of prescribed reference rotational positions of a corresponding cylinder, the second signal containing a plurality of cylinder recognition pulses each at a location near a corresponding one of the positional pulses. Each cylinder recognition pulse has a specific angular relation with respect to a corresponding positional pulse which is different from that of any other cylinder recognition pulse. A microcomputer detects the level of the second signal at the prescribed reference rotational positions of each cylinder so as to generate an appropriate serial pattern representative of a series of successively detected signal levels. The microcomputer includes a register for sequentially storing the successively detected signal levels, and has a look-up table stored therein which contains a plurality of serial patterns each corresponding to a specific cylinder. The microcomputer recognizes the operating state of each cylinder based on an appropriate number of successively detected last signal levels stored in the register while looking at the look-up table.
摘要翻译：一种用于多气缸内燃机的改进的气缸识别装置，其能够在短时间内以可靠的方式通过使用信号发生器的两种输出信号来识别相对较大数量的气缸的运行状态。信号发生器与发动机的旋转同步地产生第一信号和第二信号，第一信号包含多个位置脉冲，每个位置脉冲代表对应汽缸的规定参考旋转位置，第二信号包含多个气缸识别脉冲每个位于靠近相应的一个位置脉冲的位置。每个气缸识别脉冲相对于与任何其它气缸识别脉冲不同的相应位置脉冲具有特定的角度关系。微型计算机检测每个气缸的规定基准旋转位置处的第二信号的电平，以产生表示一系列连续检测的信号电平的适当的串行图形。该微型计算机包括一个用于顺序地存储连续检测的信号电平的寄存器，并且具有存储在其中的查找表，该查找表包含多个对应于特定气缸的串行模式。微型计算机在查看查找表的同时，基于存储在寄存器中的适当数量的连续检测到的最后信号电平来识别每个气缸的操作状态。

8. 发明授权

US5054447A Ignition timing control device and method for an internal combustion engine 失效
标题翻译：点火正时控制装置和内燃机的方法
公开(公告)号：US5054447A
公开(公告)日：1991-10-08
申请号：US603352
申请日：1990-10-26
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
IPC分类号： F02P5/15 , F02P3/045
CPC分类号： F02P3/0456
摘要： An ignition timing control device for a multicylinder engine comprises a position sensor which generates a crank angle reference position signal indicative of a first and a second reference position of respective cylinders, wherein the second reference position of a particular cylinder is retarded by a predetermined offset with respect to other cylinders. Thus, the control device discriminates the particular cylinder from the ratio of the pulse-width to the pulse repetition period. The length of time between the first or second reference position and the target ignition timing is determined in accordance with the average of two or more preceding periods between the first or second reference position. Thus, the error of the ignition timing, which results from a hunting of the rpm of the engine and which is especially conspicuous with respect to the particular cylinder, is suppressed.
摘要翻译：用于多缸发动机的点火正时控制装置包括位置传感器，其产生指示各个气缸的第一和第二参考位置的曲柄角参考位置信号，其中特定气缸的第二参考位置被延迟预定偏移量，尊重其他气瓶。因此，控制装置将特定气缸与脉冲宽度与脉冲重复周期的比率进行区分。根据第一或第二参考位置之间的两个或多个先前周期的平均值来确定第一或第二参考位置与目标点火时间之间的时间长度。因此，抑制了由发动机的转速的振荡引起的点火正时的误差，并且相对于特定气缸特别显着。

9. 发明授权

US5036812A Idle control device for an internal combustion engine 失效
标题翻译：一种用于内燃机的空转控制装置
公开(公告)号：US5036812A
公开(公告)日：1991-08-06
申请号：US519985
申请日：1990-05-01
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
IPC分类号： F02D41/08 , F02D41/22 , F02D41/26
CPC分类号： F02D41/222 , F02D41/08 , F02D41/266 , F02D2041/227
摘要： An idle control device for an internal combustion engine capable of controlling the idle speed of the engine in an appropriate manner over a wide operating range thereof and performing idle stabilization control when the engine operation is abnormal. In one embodiment, it is determined whether the engine is in a fast or a normal idling condition, and the number of engine rpm during fast idling is controlled to be at a target value which is higher than another target value for normal idling. In another embodiment, it is determined whether the operation of the engine is normal or abnormal, and the number of engine rpm is controlled to be at a target value when the operation of the engine is abnormal (i.e., the engine is likely to stall) even if the engine is erroneously determined to be out of idling due to sensor failure or the like.
摘要翻译：一种用于内燃机的怠速控制装置，其能够在其宽的工作范围内以适当的方式控制发动机的怠速，并且当发动机操作异常时执行怠速稳定控制。在一个实施例中，确定发动机是处于快速还是正常怠速状态，并且将快速怠速期间的发动机转速控制为高于正常怠速的另一个目标值的目标值。在另一实施例中，确定发动机的运转是正常还是异常，并且当发动机的运转异常（即，发动机很可能失速）时，发动机转速的数量被控制在目标值，即使发动机由于传感器故障等而被错误地判定为不起作用。

10. 发明授权

US5505077A Method for detecting misfiring in an internal combustion engine 失效
公开(公告)号：US5505077A
公开(公告)日：1996-04-09
申请号：US413629
申请日：1995-03-30
申请人： Wataru Fukui , Toshio Iwata
发明人： Wataru Fukui , Toshio Iwata
IPC分类号： F02B3/06 , G01M15/08 , G01M15/11 , G01M15/00
CPC分类号： G01M15/08 , G01M15/11 , F02B3/06
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.

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