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1. 发明授权

US06653840B2 Ion current detecting device for internal combustion engine 有权
公开(公告)号：US06653840B2
公开(公告)日：2003-11-25
申请号：US10115022
申请日：2002-04-04
申请人： Hiroshi Yorita , Masatoshi Ikeda , Makoto Toriyama , Tohru Yoshinaga
发明人： Hiroshi Yorita , Masatoshi Ikeda , Makoto Toriyama , Tohru Yoshinaga
IPC分类号： F02P1700
CPC分类号： F02P17/12 , F02P2017/125
摘要： In an engine ignition unit, a transistor and a current detecting resistor are connected to primary and secondary windings of an ignition coil, respectively. The current detecting resistor is used for detecting a current flowing between the opposing electrodes of spark plug. At an ignition by the spark plug, high-frequency square wave signals are generated by an oscillator after an ignition signal is cut off. The square wave signals turn on and off the transistor. By this operation, a battery voltage is intermittently applied to the primary winding and an ion current is measured. A frequency of the square wave signals is set close to a resonant frequency of an ion current path including the spark plug, the secondary winding of the ignition coil and the current detecting resistor.

2. 发明授权

US06734677B2 Device and method for detecting engine combustion condition 失效
标题翻译：用于检测发动机燃烧状况的装置和方法
公开(公告)号：US06734677B2
公开(公告)日：2004-05-11
申请号：US10269948
申请日：2002-10-15
申请人： Makoto Toriyama , Tohru Yoshinaga , Hiroshi Yorita
发明人： Makoto Toriyama , Tohru Yoshinaga , Hiroshi Yorita
IPC分类号： F02P1700
CPC分类号： G01N27/62 , F02P17/12
摘要： A combustion condition detecting device detects combustion ions between opposing electrodes in a combustion chamber by ion current flowing between the electrodes in response to a.c. current voltage applied between the electrodes. A low pass filter for eliminating current components having high order frequencies of the a.c. voltage is disposed in a primary side of the transformer so that a waveform of the a.c. voltage approximates a sine wave. Thus, detection accuracy of the combustion ions is prevented from being affected by variation of capacitive current included in the current flowing between the electrodes, wherein the variation of the capacitive current is caused by distortion of the waveform of the a.c. voltage.
摘要翻译：燃烧条件检测装置通过响应于直流电流在电极之间流动的离子电流来检测燃烧室中的相对电极之间的燃烧离子。施加在电极之间的电流电压。一种低通滤波器，用于消除交流电源的高阶频率的电流分量。电压设置在变压器的初级侧，使得交流电的波形。电压近似正弦波。因此，防止燃烧离子的检测精度受到在电极之间流动的电流中包括的电容电流的变化的影响，其中电容电流的变化是由a.c.的波形的失真引起的。电压。

3. 发明授权

US06265814B1 Spark plug having a bypass electrode extending along a bypass path between center and ground electrode 失效
标题翻译：火花塞具有沿中心线和接地电极之间的旁通路径延伸的旁路电极
公开(公告)号：US06265814B1
公开(公告)日：2001-07-24
申请号：US09143613
申请日：1998-08-28
申请人： Tohru Yoshinaga , Takehiko Kato , Tokio Kohama , Hiroshi Yorita , Masaki Takeyama , Masatoshi Ikeda
发明人： Tohru Yoshinaga , Takehiko Kato , Tokio Kohama , Hiroshi Yorita , Masaki Takeyama , Masatoshi Ikeda
IPC分类号： H01T1320
CPC分类号： H01T13/40
摘要： To excellently grow flame kernel while lowering breakdown voltage, a bypass electrode comprising a semiconductor material is installed in a path bypassing an inductive spark gap between a center electrode and a ground electrode, and the center electrode and the ground electrode are electrically connected by the bypass electrode and capacitive discharge is carried out by applying breakdown voltage between the center electrode and the ground electrode via the bypass electrode, and thereafter, inductive discharge is carried out through the inductive spark gap.
摘要翻译：为了在降低击穿电压的同时优良地生长火焰核，包括半导体材料的旁路电极安装在绕过中心电极和接地电极之间的感应火花隙的路径中，并且中心电极和接地电极通过旁路电连接电极和电容放电是通过旁路电极在中心电极和接地电极之间施加击穿电压进行的，之后通过感应火花隙进行感应放电。

4. 发明授权

US6104195A Apparatus for detecting a condition of burning in an internal combustion engine 失效
公开(公告)号：US6104195A
公开(公告)日：2000-08-15
申请号：US832201
申请日：1997-04-08
申请人： Tohru Yoshinaga , Tokio Kohama , Hiroshi Yorita , Yasuyuki Satou , Masao Kano , Toshiaki Yamaura
发明人： Tohru Yoshinaga , Tokio Kohama , Hiroshi Yorita , Yasuyuki Satou , Masao Kano , Toshiaki Yamaura
IPC分类号： F02P17/12 , G01N27/62 , G01N27/68
CPC分类号： G01N27/62 , G01N27/68
摘要： An apparatus for detecting a condition of burning in an internal combustion engine includes a pair of opposed electrodes provided in a combustion chamber of the engine, and an AC voltage applying device for applying an AC voltage between the opposed electrodes. A current detecting device is operative for detecting a current flowing between the opposed electrodes. A current generating means for generating a current-representing signal depending on the detected current, the current generating means having a differentiating circuit for differentiating the AC voltage into the capacitance-current representing signal. In another aspect of this invention, the apparatus further comprises calculating means for calculating ratios between a parameter represented by the burning-ion current representing signal and a parameter represented by a signal depending on the AC voltage applied between the opposed electrodes. A waveform processing device is operative for removing the capacitive current component from the current-representing signal to extract a burning ion current component, and for generating a burning-ion-current representing signal depending on the extracted burning ion current component. The capacitive current component occurs in correspondence with the AC voltage. One aspect of the invention utilizes calculating means for calculating a ratio between a parameter represented by the burning-ion-current representing signal and a parameter represented by a signal depending on the AC voltage applied between opposed electrodes. The burning ion current component corresponds to a burning ion current which flows between the opposed electrodes. A burning condition detecting device is operative for detecting a condition of burning in the combustion chamber of the engine on the basis of the burning-ion-current representing signal generated by the waveform processing device. The waveform processing device includes an integration processing device for integrating the current-representing signal to generate the burning-ion-current representing signal.

5. 发明授权

US6020742A Combustion monitoring apparatus for internal combustion engine 失效
标题翻译：内燃机燃烧监控装置
公开(公告)号：US6020742A
公开(公告)日：2000-02-01
申请号：US798149
申请日：1997-02-10
申请人： Masao Kano , Tokio Kohama , Tohru Yoshinaga , Hiroshi Yorita , Yasuyuki Satou
发明人： Masao Kano , Tokio Kohama , Tohru Yoshinaga , Hiroshi Yorita , Yasuyuki Satou
IPC分类号： G01M15/04 , F02P17/12 , G01L23/22 , G01M15/00
CPC分类号： F02P17/12 , F02D35/027 , G01L23/225 , F02P2017/125
摘要： A combustion monitoring apparatus for an internal combustion engine is provided which includes a voltage supply circuit, a combustion monitoring circuit, and a control circuit. The voltage supply circuit applies the voltage to plug electrodes of a spark plug mounted in a combustion chamber of the engine. The combustion ion monitoring circuit monitors a variation in amount of combustion ions existing between the plug electrodes to determine a combustion condition of the engine based on the current flowing through the plug electrodes produced by application of the voltage to the electrodes. The control circuit controls an operation of the voltage supply circuit so that the voltage is applied across the plug electrodes prior to a discharge duration of a spark plug mounted in the combustion chamber of the engine for monitoring preignition.
摘要翻译：提供一种用于内燃机的燃烧监测装置，其包括电压供应电路，燃烧监测电路和控制电路。电压供给电路对安装在发动机的燃烧室内的火花塞的插头电极施加电压。燃烧离子监视电路监测存在于插头电极之间的燃烧离子量的变化，以基于流过通过向电极施加电压而产生的插塞电极的电流来确定发动机的燃烧状态。控制电路控制电压供应电路的操作，使得在安装在发动机的燃烧室中的火花塞的放电持续时间之前，在插头电极之间施加电压，用于监视预启动。

6. 发明授权

US5925819A Combustion monitoring apparatus for internal combustion engine 失效
标题翻译：内燃机燃烧监控装置
公开(公告)号：US5925819A
公开(公告)日：1999-07-20
申请号：US792169
申请日：1997-01-30
申请人： Tohru Yoshinaga , Tokio Kohama , Hiroshi Yorita , Yasuyuki Satou , Masao Kano
发明人： Tohru Yoshinaga , Tokio Kohama , Hiroshi Yorita , Yasuyuki Satou , Masao Kano
IPC分类号： F02D41/14 , F02P17/12 , G01M15/00
CPC分类号： F02P17/12 , F02P2017/125
摘要： A combustion monitoring apparatus for an internal combustion engine is provided which is designed to distinguish abnormal combustion conditions from a normal combustion conditions using a combustion ion current included in a current flowing through plug electrodes of a spark plug, resulting from motion of ions between the plug electrodes which are produced by combustion. For example, if a maximum value of the combustion ion current during one combustion cycle is smaller than a given value, it is determined that a misfire has occurred. If an attenuation time from generation of the current flowing through the plug electrodes until a variation in the current is decreased to a given value is shorter than a given time period, it is determined that a flame has been blown out before combustion is completed.
摘要翻译：提供一种用于内燃机的燃烧监测装置，其被设计为使用包括在流过火花塞的插塞电极的电流中的燃烧离子电流来区分异常燃烧条件与正常燃烧条件，该电流是由插塞之间的离子运动引起的通过燃烧产生的电极。例如，如果在一个燃烧循环期间的燃烧离子电流的最大值小于给定值，则确定发生了失火。如果从流过插塞电极的电流的产生的衰减时间直到电流的变化减小到给定值，则比给定的时间段短，则确定在燃烧完成之前已经将火焰吹出。

7. 发明授权

US06397827B1 Spark ignition device for direct injection-type engines 有权
标题翻译：用于直喷式发动机的点火装置
公开(公告)号：US06397827B1
公开(公告)日：2002-06-04
申请号：US09630009
申请日：2000-07-31
申请人： Takehiko Kato , Tohru Yoshinaga , Hiroshi Yorita , Shinichi Okabe , Tatsushi Nakashima , Tetsuya Miwa
发明人： Takehiko Kato , Tohru Yoshinaga , Hiroshi Yorita , Shinichi Okabe , Tatsushi Nakashima , Tetsuya Miwa
IPC分类号： F02P1510
CPC分类号： F02P15/08 , F02D41/3023 , F02D2041/389 , F02P9/007
摘要： An ignition device sets a total discharge period, each discharge period and each intermittent period of a multiple discharge are set by a control map in addition to the setting of a throttle opening, fuel injection timing, fuel injection period and ignition timing for the range of non-stratified charge combustion, when a direct injection-type engine operates in the range of stratified charge combustion. Ignition signals including a plurality of rises and falls are outputted in time with a specific ignition timing after fuel injection. Thus a plurality of sparks are generated from the spark plug, ensuring reliable ignition in response to changes in the concentration of sprayed fuel within the operation range for stratified charge combustion.
摘要翻译：点火装置设定总放电周期，除了设定节气门开度，燃料喷射正时，燃料喷射期间和点火正时之外，还通过控制图来设定每个放电周期和多次放电的每个间歇期间当直喷式发动机在分层充气燃烧的范围内运行时，非分层充气燃烧。在燃料喷射之后，具有特定点火正时的时间，输出包括多个上升和下降的点火信号。因此，从火花塞产生多个火花，确保在分层充气燃烧的操作范围内响应于喷射燃料的浓度变化而可靠地着火。

8. 发明授权

US06675785B2 Ignition device for an internal combustion engine 有权
标题翻译：内燃机点火装置
公开(公告)号：US06675785B2
公开(公告)日：2004-01-13
申请号：US10397266
申请日：2003-03-27
申请人： Tetsuya Miwa , Atsuya Mizutani , Takeo Maekawa , Hiromi Hiramatsu , Tohru Yoshinaga
发明人： Tetsuya Miwa , Atsuya Mizutani , Takeo Maekawa , Hiromi Hiramatsu , Tohru Yoshinaga
IPC分类号： F02P1300
CPC分类号： H01T13/44 , G01L23/22 , H01T13/40
摘要： An insulator includes a coil side cylindrical portion extending from a plug side cylinder portion in a direction departing from a combustion chamber. One end of the coil side cylindrical portion protrudes in the direction departing from the combustion chamber with respect to a primary winding and a secondary winding. A pressure sensing element is disposed next to the one end of the coil side cylindrical portion. The signal lines of the pressure sensing element are taken out of a casing without passing aside an ignition coil. Thus, the diameter of the casing does not increase. The output signal of the pressure sensing element is not adversely influenced by discharge noises generated from the ignition coil.
摘要翻译：绝缘体包括从离开燃烧室的方向从插塞侧筒部延伸的线圈侧圆筒部。线圈侧圆筒部的一端相对于初级绕组和次级绕组在离开燃烧室的方向上突出。压力感测元件邻近线圈侧圆柱形部分的一端设置。压力检测元件的信号线从壳体中取出，而不会使点火线圈偏离。因此，壳体的直径不增加。压力感测元件的输出信号不会受到点火线圈产生的放电噪声的不利影响。

9. 发明授权

US07948158B2 Plasma ignition system with recess porton in the center electrode 有权
标题翻译：等离子点火系统在中心电极具有凹口
公开(公告)号：US07948158B2
公开(公告)日：2011-05-24
申请号：US12175117
申请日：2008-07-17
申请人： Hideyuki Kato , Tohru Yoshinaga
发明人： Hideyuki Kato , Tohru Yoshinaga
IPC分类号： H01T13/20 , H01T13/34 , H01T13/52
CPC分类号： H01T13/50 , F02P9/007
摘要： A plasma ignition system includes an ignition plug attached to an engine and a high-voltage supply. The plug includes a center electrode serving as a positive pole, a ground electrode serving as a negative pole, and an insulating member insulating the center electrode from the ground electrode and defining a discharge space therein. At least a part of a surface of the center electrode faces the space, and at least a part of a surface of the ground electrode faces the discharge space. The plug puts gas in the space into a plasma state and injects the gas into the engine as a result of application of high voltage and supply of a large current to the plug by the high-voltage supply. The center electrode has a recess portion opposed to the space and recessed in a direction opposite to an injection direction.
摘要翻译：等离子体点火系统包括附接到发动机的火花塞和高压电源。插头包括用作正极的中心电极，用作负极的接地电极，以及将中心电极与接地电极绝缘并在其中限定放电空间的绝缘构件。中心电极的表面的至少一部分面向空间，并且接地电极的表面的至少一部分面向放电空间。插头将空气中的气体放入等离子体状态，并通过施加高电压并且通过高压电源向插头供应大电流而将气体注入发动机。中心电极具有与空间相对的凹部，并且沿与注射方向相反的方向凹陷。

10. 发明申请

US20090021133A1 PLASMA IGNITION SYSTEM 有权
标题翻译：等离子体点火系统
公开(公告)号：US20090021133A1
公开(公告)日：2009-01-22
申请号：US12175117
申请日：2008-07-17
申请人： Hideyuki Kato , Tohru Yoshinaga
发明人： Hideyuki Kato , Tohru Yoshinaga
IPC分类号： H01T13/20 , F02P3/02 , H01T13/02
CPC分类号： H01T13/50 , F02P9/007
摘要： A plasma ignition system includes an ignition plug attached to an engine and a high-voltage supply. The plug includes a center electrode serving as a positive pole, a ground electrode serving as a negative pole, and an insulating member insulating the center electrode from the ground electrode and defining a discharge space therein. At least a part of a surface of the center electrode faces the space, and at least a part of a surface of the ground electrode faces the discharge space. The plug puts gas in the space into a plasma state and injects the gas into the engine as a result of application of high voltage and supply of a large current to the plug by the high-voltage supply. The center electrode has a recess portion opposed to the space and recessed in a direction opposite to an injection direction.
摘要翻译：等离子体点火系统包括附接到发动机的火花塞和高压电源。插头包括用作正极的中心电极，用作负极的接地电极，以及将中心电极与接地电极绝缘并在其中限定放电空间的绝缘构件。中心电极的表面的至少一部分面向空间，并且接地电极的表面的至少一部分面向放电空间。插头将空气中的气体放入等离子体状态，并通过施加高电压并且通过高压电源向插头供应大电流而将气体注入发动机。中心电极具有与空间相对的凹部，并且沿与注射方向相反的方向凹陷。

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