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1. 发明授权

US5168854A Method and apparatus for detecting failure of pressure sensor in internal combustion engine 失效
标题翻译：用于检测内燃机中压力传感器故障的方法和装置
公开(公告)号：US5168854A
公开(公告)日：1992-12-08
申请号：US748721
申请日：1991-08-22
申请人： Atsuko Hashimoto , Toshio Iwata , Wataru Fukui , Toshio Ohsawa
发明人： Atsuko Hashimoto , Toshio Iwata , Wataru Fukui , Toshio Ohsawa
IPC分类号： F02B1/04 , F02D41/22 , F02P5/152 , G01L27/00 , G01M15/08
CPC分类号： F02D35/023 , F02D41/222 , F02P5/1526 , G01L27/007 , G01M15/08 , F02B1/04 , Y02T10/46
摘要： Method and apparatus for detecting a failure of a pressure sensor provided in association with a cylinder of an internal combustion engine for detecting the pressure therein. Decision as to occurrence of a failure in the pressure sensor is made on the basis of the cylinder pressure detected by the pressure sensor through comparison with a prescribed reference value or range. Failure of the pressure sensor is determined if the detected cylinder pressure deviates from the reference value or range by a predetermined amount. Upon detection of a pressure sensor failure, an engine control parameter such as ignition timing for controlling the associated cylinder in dependence on the pressure sensor output is set to a fixed value or the operation of the cylinder is stopped.
摘要翻译：用于检测与用于检测其中的压力的内燃机的气缸相关联地设置的压力传感器的故障的方法和装置。基于由压力传感器检测的气缸压力与规定的基准值或范围进行比较，进行关于压力传感器发生故障的判定。如果检测到的气缸压力与参考值或范围偏离预定量，则确定压力传感器的故障。在检测到压力传感器故障时，将根据压力传感器输出控制相关气缸的点火正时等发动机控制参数设定为固定值，或停止气缸的动作。

2. 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。

3. 发明授权

US5309884A Internal combustion engine control apparatus with ignition coil diagnosis function 失效
标题翻译：具有点火线圈诊断功能的内燃机控制装置
公开(公告)号：US5309884A
公开(公告)日：1994-05-10
申请号：US16558
申请日：1993-02-11
申请人： Wataru Fukui , Toshio Ohsawa
发明人： Wataru Fukui , Toshio Ohsawa
IPC分类号： F02P3/04 , F02D45/00 , F02P17/12 , G01M15/04 , F02P15/00
CPC分类号： F02P17/12 , F02P2017/125
摘要： An engine control apparatus capable of detecting occurrence of abnormality in the ignition coil with high reliability. The apparatus includes an initial detection level hold device for holding an initial level (In) of a detected ion current value I, and an ignition coil diagnosis device for generating an abnormality decision signal of the ignition coil in dependence on the initial level of the ion current. By positively utilizing noise produced in an initial phase of the ignition cycle instead of eliminating it, the abnormality decision signal is generated, on the basis of which an appropriate engine protection measure is taken.
摘要翻译：一种能够以高可靠性检测点火线圈中的异常发生的发动机控制装置。该装置包括用于保持检测到的离子电流值I的初始电平（In）的初始检测电平保持装置和用于根据离子的初始电平产生点火线圈的异常判定信号的点火线圈诊断装置当前。通过积极地利用在点火周期的初始阶段产生的噪声而不是消除它，则产生异常判定信号，并根据该判定信号进行适当的发动机保护措施。

4. 发明授权

US5067462A Control device and method for multicylinder engine with a cylinder discrimination function 失效
标题翻译：具有气缸鉴别功能的多缸发动机的控制装置和方法
公开(公告)号：US5067462A
公开(公告)日：1991-11-26
申请号：US599174
申请日：1990-10-17
申请人： Toshio Iwata , Toshio Ohsawa
发明人： Toshio Iwata , Toshio Ohsawa
IPC分类号： F02P3/04 , F02D17/02 , F02D41/06 , F02D41/36 , F02D45/00 , F02P7/03 , F02P15/08 , F02P17/12
CPC分类号： F02P17/12 , F02D41/06 , F02D41/36 , F02P15/08 , F02P7/035 , F02P2017/125 , Y02T10/44
摘要： A control device for a multi-cylinder engine comprises, in addition to a sensor 11 for detecting reference rotational positions of the crank shaft 1, an ionization current detector 41 for detecting the ionization current across a spark plug 33 of a cylinder. From the output of the sensor 11, the microcomputer 40 discriminates the group of cylinders which are in the compression and the exhaust stroke. For a short period after the start of the engine, the group of cylinders in the compression and the exhaust stroke are ignited simultaneously. During this short period, the cylinder in the compression stroke is discriminated from the group of cylinders in the compression and the exhaust stroke, on the basis of the output of the ionization current detector 41, and the number of succesive discriminations of the cylinder in the compression stroke is counted. When this number reaches a predetermined number n, a flag F is set, such that only the cylinder in the compression stroke is supplied with the ignition current thereafter.
摘要翻译：用于多气缸发动机的控制装置除了用于检测曲轴1的参考旋转位置的传感器11之外还包括用于检测气缸的火花塞33上的电离电流的电离电流检测器41。微型计算机40从传感器11的输出识别处于压缩和排气行程的一组气缸。在发动机启动后的短时间内，压缩和排气冲程中的气缸组同时点燃。在该短时间内，基于电离电流检测器41的输出，在压缩行程中的气缸与压缩和排气冲程中的气缸组进行区别，压缩冲程计数。当该数量达到预定数量n时，设定标志F，使得仅在压缩行程中的气缸被提供点火电流。

5. 发明授权

US5337716A Control apparatus for internal combustion engine 失效
标题翻译：内燃机控制装置
公开(公告)号：US5337716A
公开(公告)日：1994-08-16
申请号：US9673
申请日：1993-01-27
申请人： Wataru Fukui , Toshio Ohsawa
发明人： Wataru Fukui , Toshio Ohsawa
IPC分类号： F02D35/02 , F02D41/14 , F02P5/145 , F02P17/12 , F02P5/14
CPC分类号： F02P17/12 , F02D35/021 , F02P5/1455 , F02D2200/1015 , F02P2017/125 , Y02T10/46
摘要： An engine control apparatus can significantly improve reliability in misfire detection by preventing erroneous detection of the level of an ion current due to noise superposition. An angular position detector generates a reference position signal representative of a predetermined crank angle of each engine cylinder in synchronism with the rotation of an internal combustion engine. Sensors detect an operating state of the engine. An ion current detector detects an ion current in at least one of the engine cylinders. An engine control parameter setter sets a control parameter for the engine in accordance with the reference position signal and the engine operating state. A misfire detector generates a misfire detection signal indicative of occurrence of misfiring in the at least one engine cylinder on the basis of a value of the ion current. The control parameter setter corrects the control parameter on the basis of the misfire detection signal. Alternately, the engine control apparatus may include a window setter for causing the misfire detector to determine misfire only when ignition coil is in a non-energized state.
摘要翻译：发动机控制装置可以通过防止由于噪声叠加导致的离子电流水平的错误检测，从而显着提高失火检测的可靠性。角位置检测器与内燃机的旋转同步地产生表示每个发动机气缸的预定曲柄角的基准位置信号。传感器检测发动机的运行状态。离子电流检测器检测至少一个发动机气缸中的离子电流。发动机控制参数设定器根据基准位置信号和发动机运转状态设定发动机的控制参数。基于离子电流的值，失火检测器产生指示在至少一个发动机气缸中发生失火的失火检测信号。控制参数设定器根据失火检测信号修正控制参数。替代地，发动机控制装置可以包括窗口设定器，用于使点火线圈处于非通电状态时使失火探测器确定失火。

6. 发明授权

US5263452A Knocking detector for internal combustion engine 失效
标题翻译：内燃机爆震探测器
公开(公告)号：US5263452A
公开(公告)日：1993-11-23
申请号：US981304
申请日：1992-11-25
申请人： Toshio Ohsawa , Wataru Fukui
发明人： Toshio Ohsawa , Wataru Fukui
IPC分类号： F02D45/00 , F02P17/12 , G01L23/22 , G01M15/04 , F02P5/14 , F02M51/00
CPC分类号： G01L23/221 , F02P17/12 , F02P2017/125 , F02P2017/128
摘要： A knocking device for an internal combustion engine which detects the ionization current through an ignition coil just prior to the time of ignition, and judges whether or not the ionization current is above a predetermined level after a predetermined time or crank angle from the ignition. If the ionization current is above the predetermined level, it is judged that knocking has taken place. Accordingly, knocking can be detected simply and surely.
摘要翻译：一种用于内燃机的爆震装置，其在点火之前检测通过点火线圈的电离电流，并且在从点火开始的预定时间或曲柄角之后判断电离电流是否高于预定电平。如果电离电流高于预定水平，则判断发生了敲击。因此，可以简单且可靠地检测敲击。

7. 发明授权

US5293129A Ionic current sensing apparatus for engine spark plug with negative ignition voltage and positive DC voltage application 失效
标题翻译：具有负点火电压和正直流电压应用的发动机火花塞的离子电流感测装置
公开(公告)号：US5293129A
公开(公告)日：1994-03-08
申请号：US783908
申请日：1991-10-29
申请人： Masayuki Ikeuchi , Shigemi Murata , Toshio Iwata , Toshio Ohsawa , Takanobu Yonetsu
发明人： Masayuki Ikeuchi , Shigemi Murata , Toshio Iwata , Toshio Ohsawa , Takanobu Yonetsu
IPC分类号： F02P17/12 , F02P17/00 , F02P9/00
CPC分类号： F02P17/12 , F02P2017/125
摘要： A direct current power supply applies a positive voltage between the center electrode and the ground electrode of a spark plug in an internal combustion engine after discharge of the spark plug. Ionic current flowing between the electrodes due to the positive voltage is measured by a current sensor. The ionic current caused by the positive voltage is due to electrons, so it has a large magnitude and can be easily measured.
摘要翻译：直流电源在火花塞放电之后，在内燃机的火花塞的中心电极和接地电极之间施加正电压。由于正电压而在电极之间流动的离子电流由电流传感器测量。由正电压引起的离子电流是由电子引起的，所以它具有很大的量级，可以容易地测量。

8. 发明授权

US5272914A Ignition system for internal combustion engines 失效
标题翻译：内燃机点火系统
公开(公告)号：US5272914A
公开(公告)日：1993-12-28
申请号：US770264
申请日：1991-10-03
申请人： Shigemi Murata , Masayuki Ikeuchi , Toshio Iwata , Toshio Ohsawa
发明人： Shigemi Murata , Masayuki Ikeuchi , Toshio Iwata , Toshio Ohsawa
IPC分类号： F02P17/12 , G01M15/00
CPC分类号： F02P17/12 , F02P2017/125
摘要： An ignition system for internal combustion engines has an ignition coil having a primary winding and a secondary winding. The secondary winding supplies a high voltage for ignition to an ignition plug when the ignition coil is energized at the primary winding at a predetermined period. A voltage producing circuit produces a voltage on the basis of a signal developed across the primary winding when the primary winding is energized at a predetermined period. The voltage causes discharge across the electrodes of the ignition plug to form a path for an ion current developed in the cylinder. A comparator or detector detects the ion current to determine the combustion in a cylinder.
摘要翻译：用于内燃机的点火系统具有具有初级绕组和次级绕组的点火线圈。当点火线圈在初级绕组上以预定的时间段通电时，次级绕组向火花塞提供高电压点火。当初级绕组在预定周期被通电时，电压产生电路基于在初级绕组上产生的信号产生电压。电压引起火花塞电极上的放电，形成在气缸中产生的离子电流的路径。比较器或检测器检测离子电流以确定气缸中的燃烧。

9. 发明授权

US5271268A Ionic current sensing apparatus 失效
标题翻译：离子电流检测装置
公开(公告)号：US5271268A
公开(公告)日：1993-12-21
申请号：US795463
申请日：1991-11-21
申请人： Masayuki Ikeuchi , Shigemi Murata , Toshio Iwata , Atsushi Ueda , Toshio Ohsawa
发明人： Masayuki Ikeuchi , Shigemi Murata , Toshio Iwata , Atsushi Ueda , Toshio Ohsawa
IPC分类号： F02P17/12 , G01R19/00 , G01R31/00 , F02D1/00 , F02P9/00
CPC分类号： F02P17/12 , G01R19/0061 , F02P2017/125 , F02P2017/128 , G01R31/006
摘要： A capacitor is connected to an ignition coil for an internal combustion engine so as to be charged by ignition current generated by the ignition coil. After firing of a spark plug in a cylinder by the ignition current, the voltage across the capacitor is applied between the center electrode and the ground electrode of the spark plug to induce an ionic current between the electrodes. The resulting ionic current is measured by a current sensor connected to the capacitor.
摘要翻译：电容器与用于内燃机的点火线圈连接，由点火线圈产生的点火电流进行充电。通过点火电流在气缸内点火火花塞之后，电容器两端的电压施加在火花塞的中心电极和接地电极之间，以引起电极间的离子电流。所得到的离子电流通过连接到电容器的电流传感器来测量。

10. 发明授权

US5230240A Combustion detecting apparatus for internal combustion engine 失效
标题翻译：内燃机用燃烧检测装置
公开(公告)号：US5230240A
公开(公告)日：1993-07-27
申请号：US833796
申请日：1992-02-12
申请人： Toshio Ohsawa , Toshio Iwata
发明人： Toshio Ohsawa , Toshio Iwata
IPC分类号： F02P17/12
CPC分类号： F02P17/12 , F02P2017/125
摘要： A combustion detecting apparatus for an internal combustion engine capable of discriminatively detecting the state of combustion, normal combustion or abnormal combustion such as misfiring, from each other. By applying a voltage of positive polarity to a spark plug for each engine cylinder, an ion current of negative polarity, which is generated upon combustion of a mixture in the cylinder, is detected. Subsequently, the detected ion current signal of negative polarity is transformed to a signal of positive polarity which is then subjected to waveform shaping by using comparators to obtain an ion current detection output signal which is utilized in making decision as to occurrence of misfiring. By making use of the ion current of negative polarity, a high signal level is realized to detect the state of combustion with high reliability even in a high speed or under a heavy load of the engine. By providing a low pass filter which can pass only a shaped signal component having a duration longer than a predetermined time, noise components usually of a short duration can be eliminated to improve combustion detection.
摘要翻译：一种用于能够区分地检测燃烧状态，正常燃烧或异常燃烧（例如失火）的内燃机的燃烧检测装置。通过向每个发动机气缸的火花塞施加正极性的电压，检测在气缸中的混合物燃烧时产生的负极性的离子电流。随后，将检测到的负极性的离子电流信号变换为正极性信号，然后通过比较器进行波形整形，以获得用于作出关于发生失火的决定的离子电流检测输出信号。通过利用负极性的离子电流，实现高信号电平，即使在发动机的高速或重负载下也可以高可靠性地检测燃烧状态。通过提供可以仅通过具有比预定时间长的持续时间的成形信号分量的低通滤波器，可以消除通常为短持续时间的噪声分量以改善燃烧检测。

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