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1. 发明申请

US20090235889A1 IGNITION DEVICE FOR PLASMA JET IGNITION PLUG 失效
标题翻译：用于等离子喷射点火喷嘴的点火装置
公开(公告)号：US20090235889A1
公开(公告)日：2009-09-24
申请号：US12407955
申请日：2009-03-20
申请人： Yuichi Yamada , Daisuke Nakano , Toru Nakamura , Yoshikuni Sato
发明人： Yuichi Yamada , Daisuke Nakano , Toru Nakamura , Yoshikuni Sato
IPC分类号： F02B19/00
CPC分类号： H01T13/50
摘要： An ignition device for a plasma jet ignition plug is provided. A resistance for decreasing electric noises is not incorporated in a plasma jet ignition plug. A resistance of not less than 1 KΩ and not more than 20 KΩ is provided to a path from a spark discharge circuit to a center electrode, thus reducing the generation of electric noises at the time of trigger discharge. Along with the reduction of the generation of electric noises, a loss of energy at the time of plasma discharge can be reduced by setting an inner resistance provided to a line extending to the center electrode from a plasma discharge circuit to 1Ω or less. Accordingly, the plasma jet ignition plug can jet flame-shaped plasma sufficiently large for igniting an air-fuel mixture.
摘要翻译：提供了一种用于等离子体喷射火花塞的点火装置。用于降低电噪声的电阻不包括在等离子体喷射火花塞中。在从火花放电电路到中心电极的路径上提供不低于1KOmega且不超过20KOmega的电阻，从而在触发放电时减少电噪声的产生。随着电噪声的产生的减少，通过将从等离子体放电电路延伸到中心电极的线的内部电阻设定为10mega以下，能够降低等离子体放电时的能量损失。因此，等离子喷射火花塞可以喷射足够大的火焰形等离子体以点燃空气 - 燃料混合物。

2. 发明授权

US07895994B2 Ignition device for plasma jet ignition plug 失效
标题翻译：等离子喷射火花塞点火装置
公开(公告)号：US07895994B2
公开(公告)日：2011-03-01
申请号：US12407955
申请日：2009-03-20
申请人： Yuichi Yamada , Daisuke Nakano , Toru Nakamura , Yoshikuni Sato
发明人： Yuichi Yamada , Daisuke Nakano , Toru Nakamura , Yoshikuni Sato
IPC分类号： F02P3/00 , F02P23/04
CPC分类号： H01T13/50
摘要： An ignition device for a plasma jet ignition plug is provided. A resistance for decreasing electric noises is not incorporated in a plasma jet ignition plug. A resistance of not less than 1KΩ and not more than 20KΩ is provided to a path from a spark discharge circuit to a center electrode, thus reducing the generation of electric noises at the time of trigger discharge. Along with the reduction of the generation of electric noises, a loss of energy at the time of plasma discharge can be reduced by setting an inner resistance provided to a line extending to the center electrode from a plasma discharge circuit to 1Ω or less. Accordingly, the plasma jet ignition plug can jet flame-shaped plasma sufficiently large for igniting an air-fuel mixture.
摘要翻译：提供了一种用于等离子体喷射火花塞的点火装置。用于降低电噪声的电阻不包括在等离子体喷射火花塞中。电阻不小于1K＆OHgr; 不超过20K＆OHgr; 被提供到从火花放电电路到中心电极的路径，从而在触发放电时减少电噪声的产生。随着电噪声的产生的减少，可以通过将从等离子体放电电路延伸到中心电极的线的内部电阻设置为1＆OHgr来降低等离子体放电时的能量损失; 或更少。因此，等离子喷射火花塞可以喷射足够大的火焰形等离子体以点燃空气 - 燃料混合物。

3. 发明申请

US20090194053A1 PLASMA JET IGNITION PLUG 有权
标题翻译：等离子喷射点火插头
公开(公告)号：US20090194053A1
公开(公告)日：2009-08-06
申请号：US12366094
申请日：2009-02-05
申请人： Toru Nakamura , Yuichi Yamada , Iwao Kunitomo , Yoshikuni Sato , Daisuke Nakano
发明人： Toru Nakamura , Yuichi Yamada , Iwao Kunitomo , Yoshikuni Sato , Daisuke Nakano
IPC分类号： F02B19/00
CPC分类号： H01T13/50 , H01T13/32
摘要： A plasma jet ignition plug capable of inhibiting occurrence of channeling while reducing removal of energy of plasma through a ground electrode at the time of emission of plasma. A ground electrode of a plasma jet ignition plug projects inward from a front end face of a metallic shell toward an opening end of a cavity which is open at a front end face of an insulator. A projecting distal end which forms a spark discharge gap between the same and a center electrode within a cavity is located inward, with respect to a diametral direction P orthogonal to an axis O, of a position which is located 0.5 mm radially outward from the opening end of the cavity.
摘要翻译：一种等离子喷射火花塞，其能够抑制发射通道，同时在发射等离子体时减少通过接地电极去除等离子体的能量。等离子喷射火花塞的接地电极从金属壳的前端面朝向在绝缘体的前端面开口的空腔的开口端向内突出。在腔内形成火花放电间隙的突出的远端相对于与轴线O垂直的直径方向P位于距开口径向向外0.5mm的位置的内侧腔的末端。

4. 发明授权

US08047172B2 Plasma jet ignition plug 有权
标题翻译：等离子喷射火花塞
公开(公告)号：US08047172B2
公开(公告)日：2011-11-01
申请号：US12366094
申请日：2009-02-05
申请人： Toru Nakamura , Yuichi Yamada , Iwao Kunitomo , Yoshikuni Sato , Daisuke Nakano
发明人： Toru Nakamura , Yuichi Yamada , Iwao Kunitomo , Yoshikuni Sato , Daisuke Nakano
IPC分类号： F02P21/04 , F02P23/00
CPC分类号： H01T13/50 , H01T13/32
摘要： A plasma jet ignition plug capable of inhibiting occurrence of channeling while reducing removal of energy of plasma through a ground electrode at the time of emission of plasma. A ground electrode of a plasma jet ignition plug projects inward from a front end face of a metallic shell toward an opening end of a cavity which is open at a front end face of an insulator. A projecting distal end which forms a spark discharge gap between the same and a center electrode within a cavity is located inward, with respect to a diametral direction P orthogonal to an axis O, of a position which is located 0.5 mm radially outward from the opening end of the cavity.
摘要翻译：一种等离子喷射火花塞，其能够抑制发射通道，同时在发射等离子体时减少通过接地电极去除等离子体的能量。等离子喷射火花塞的接地电极从金属壳的前端面朝向在绝缘体的前端面开口的空腔的开口端向内突出。在腔内形成火花放电间隙的突出的远端相对于与轴线O垂直的直径方向P位于距开口径向向外0.5mm的位置的内侧腔的末端。

5. 发明授权

US08316823B2 Plasma jet ignition plug ignition control 有权
标题翻译：等离子喷射火花塞点火控制
公开(公告)号：US08316823B2
公开(公告)日：2012-11-27
申请号：US12452068
申请日：2009-01-08
申请人： Yoshikuni Sato , Daisuke Nakano , Yuichi Yamada , Toru Nakamura
发明人： Yoshikuni Sato , Daisuke Nakano , Yuichi Yamada , Toru Nakamura
IPC分类号： F02P5/00 , F02P7/02
CPC分类号： H01T13/50 , F02P9/007
摘要： A control system for controlling the ignition of a plasma-jet spark plug provided in an internal combustion engine senses an operating condition of the internal combustion engine, and determines an ignition mode of the plasma-jet spark plug in accordance with the sensed operating condition. The control system performs an ignition control of breaking down the insulation across a spark discharge gap by applying a first electric power to the plasma-jet spark plug, and producing plasma in the vicinity of the spark discharge gap by applying a second electric power to the spark discharge gap in a state of dielectric breakdown. The control system performs this ignition control according to the ignition mode determined as mentioned above.
摘要翻译：用于控制设置在内燃机中的等离子体火花塞的点火的控制系统感测内燃机的运行状态，并且根据感测到的运行状态来确定等离子体火花塞的点火模式。控制系统通过向等离子喷射式火花塞施加第一电力来进行火花放电间隙分解的点火控制，并通过对火花放电间隙施加第二电力来产生在火花放电间隙附近的等离子体介质击穿状态下的火花放电间隙。控制系统根据如上所述确定的点火模式执行该点火控制。

6. 发明申请

US20100132666A1 PLASMA JET IGNITION PLUG IGNITION CONTROL 有权
标题翻译：等离子喷嘴点火点火控制
公开(公告)号：US20100132666A1
公开(公告)日：2010-06-03
申请号：US12452068
申请日：2009-01-08
申请人： Yoshikuni Sato , Daisuke Nakano , Yuichi Yamada , Toru Nakamura
发明人： Yoshikuni Sato , Daisuke Nakano , Yuichi Yamada , Toru Nakamura
IPC分类号： F02P5/00 , F02P7/02
CPC分类号： H01T13/50 , F02P9/007
摘要： A control system for controlling the ignition of a plasma-jet spark plug provided in an internal combustion engine senses an operating condition of the internal combustion engine, and determines an ignition mode of the plasma-jet spark plug in accordance with the sensed operating condition. The control system performs an ignition control of breaking down the insulation across a spark discharge gap by applying a first electric power to the plasma-jet spark plug, and producing plasma in the vicinity of the spark discharge gap by applying a second electric power to the spark discharge gap in a state of dielectric breakdown. The control system performs this ignition control according to the ignition mode determined as mentioned above.
摘要翻译：用于控制设置在内燃机中的等离子体火花塞的点火的控制系统感测内燃机的运行状态，并且根据感测到的运行状态来确定等离子体火花塞的点火模式。控制系统通过向等离子喷射式火花塞施加第一电力来进行火花放电间隙分解的点火控制，并通过对火花放电间隙施加第二电力来产生等离子体介质击穿状态下的火花放电间隙。控制系统根据如上所述确定的点火模式执行该点火控制。

7. 发明授权

US08082897B2 Plasma jet ignition plug and ignition device for the same 有权
标题翻译：等离子喷射火花塞和点火装置相同
公开(公告)号：US08082897B2
公开(公告)日：2011-12-27
申请号：US12452109
申请日：2008-06-13
申请人： Tomoaki Kato , Toru Nakamura , Yuichi Yamada
发明人： Tomoaki Kato , Toru Nakamura , Yuichi Yamada
IPC分类号： F02B1/12 , H01T13/20
CPC分类号： F02P9/007 , H01T13/50
摘要： The cavity of a plasma jet ignition plug is configured in a stepped shape; i.e., composed of a constricted portion and a diameter-increased portion (65). The inner diameter (B) of the constricted portion is made smaller than the inner diameter (A) of the diameter-increased portion. Further, as measured along the direction of the axis O, the length (Y) of the constricted portion is made equal to or greater than the length (X) of the diameter-increased portion. This configuration suppresses a pressure loss produced when the generated plasma expands within the cavity. As a result, the energy of the plasma at the time of jetting is increased, and the igniting performance for an air-fuel mixture can be improved.
摘要翻译：等离子喷射火花塞的空腔构成阶梯状; 即由收缩部分和直径增加部分（65）组成。收缩部的内径（B）比直径增大部的内径（A）小。此外，沿着轴线O的方向测量，缩颈部分的长度（Y）等于或大于直径增加部分的长度（X）。这种构造抑制了当所产生的等离子体在空腔内膨胀时产生的压力损失。结果，喷射时等离子体的能量增加，能够提高空燃混合物的点火性能。

8. 发明授权

US07959482B2 Manufacturing method for ignition plug involves removing leading end portion of shell extended from end surface of insulator 有权
标题翻译：火花塞的制造方法包括从绝缘体端面延伸的壳体的前端部分去除
公开(公告)号：US07959482B2
公开(公告)日：2011-06-14
申请号：US12399177
申请日：2009-03-06
申请人： Toru Nakamura , Tomoaki Kato , Yuichi Yamada
发明人： Toru Nakamura , Tomoaki Kato , Yuichi Yamada
IPC分类号： H01T21/02 , F02M57/06 , F02B19/00 , F02P23/00
CPC分类号： H01T21/02 , H01T13/50
摘要： A manufacturing method for an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of the center electrode more inwards than a leading end of the insulator; building the insulator in an interior of the metal shell such that the leading end of the insulator is situated closer to a rear end side than the leading end of the metal shell; removing at least part of a leading end portion of the metal shell which projects from a leading end face of the insulator; and disposing the ground electrode at the leading end portion of the metal shell and welding the ground electrode and the metal shell together after the removal step.
摘要翻译：提供一种火花塞的制造方法。该方法包括：通过将中心电极的前端比绝缘体的前端更向内设置，制备具有设置在其前端部分的空腔的绝缘体; 在金属外壳的内部建立绝缘体，使得绝缘体的前端位于比金属壳的前端更靠近后端侧; 从所述绝缘体的前端面移除所述金属壳的前端部的至少一部分; 并且将接地电极设置在金属壳的前端部，并且在去除步骤之后将接地电极和金属壳焊接在一起。

9. 发明申请

US20100102728A1 PLASMA JET IGNITION PLUG AND IGNITION DEVICE FOR THE SAME 有权
标题翻译：等离子喷嘴喷嘴和点火装置
公开(公告)号：US20100102728A1
公开(公告)日：2010-04-29
申请号：US12452109
申请日：2008-06-13
申请人： Tomoaki Kato , Toru Nakamura , Yuichi Yamada
发明人： Tomoaki Kato , Toru Nakamura , Yuichi Yamada
IPC分类号： H01T13/20 , H01T15/00
CPC分类号： F02P9/007 , H01T13/50
摘要： The cavity of a plasma jet ignition plug is configured in a stepped shape; i.e., composed of a constricted portion and a diameter-increased portion (65). The inner diameter (B) of the constricted portion is made smaller than the inner diameter (A) of the diameter-increased portion. Further, as measured along the direction of the axis O, the length (Y) of the constricted portion is made equal to or greater than the length (X) of the diameter-increased portion. This configuration suppresses a pressure loss produced when the generated plasma expands within the cavity. As a result, the energy of the plasma at the time of jetting is increased, and the igniting performance for an air-fuel mixture can be improved.
摘要翻译：等离子喷射火花塞的空腔构成阶梯状; 即由收缩部分和直径增加部分（65）组成。收缩部的内径（B）比直径增大部的内径（A）小。此外，沿着轴线O的方向测量，缩颈部分的长度（Y）等于或大于直径增加部分的长度（X）。这种构造抑制了当所产生的等离子体在空腔内膨胀时产生的压力损失。结果，喷射时等离子体的能量增加，能够提高空燃混合物的点火性能。

10. 发明授权

US08388395B2 Method for manufacturing ignition plug 有权
标题翻译：火花塞的制造方法
公开(公告)号：US08388395B2
公开(公告)日：2013-03-05
申请号：US13433482
申请日：2012-03-29
申请人： Toru Nakamura , Tomoaki Kato , Yuichi Yamada
发明人： Toru Nakamura , Tomoaki Kato , Yuichi Yamada
IPC分类号： H01J9/00
CPC分类号： H01T21/02
摘要： A method for manufacturing an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of a center electrode more inwards in an axial hole than a leading end of the insulator; building the insulator in an interior of a metal shell; disposing a ground electrode at a leading end portion of the metal shell; positioning a center of a through hole of the ground electrode and a center of the cavity of the insulator; and welding the ground electrode and the metal shell together after the positioning step.
摘要翻译：提供一种制造火花塞的方法。该方法包括：通过在比绝缘体的前端更远的轴向孔内设置中心电极的前端，制造具有设置在其前端部的空腔的绝缘体; 在金属外壳的内部建立绝缘体; 在金属壳的前端部设置接地电极; 将接地电极的通孔的中心和绝缘体的空腔的中心定位; 并在定位步骤之后将接地电极和金属外壳焊接在一起。

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