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公开(公告)号：EP2889972B1
公开(公告)日：2019-04-17
申请号：EP14200288.0
申请日：2014-12-24
发明人： Fujino, Tadatoshi , Ban, Kenji , Yamada, Yuichi
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公开(公告)号：EP2889972A1
公开(公告)日：2015-07-01
申请号：EP14200288.0
申请日：2014-12-24
发明人： Fujino, Tadatoshi , Ban, Kenji , Yamada, Yuichi
摘要： A sparkplug includes: an insulator (10) with an axial hole (12) extending along an axial line O; a metal shell (50) covering the insulator (10); and a shelf part (57) inside the metal shell (50). The insulator (10) includes a second column part (15) formed in the front end side of a tapering part (14). When a volume surrounded by a first plane PS1 that passes through the front end (57a) of the shelf part (57) of the metal shell (50) and is orthogonal to the axial line O, a curved surface CS extending from an outer circumference of the second column part (15), and an outer circumference surface of the insulator (10) is defined as A, and a volume surrounded by the first plane PS1, the curved surface CS, a second plane PS2 that passes through the front end (50a) of the metal shell (50) and is orthogonal to the axial line O, and the axial hole (12) of the insulator (10) is defined as B, a relational expression 0.9 ≤ A/B ≤ 2.4 is satisfied.
摘要翻译： 一种火花塞包括：具有沿轴线O延伸的轴向孔（12）的绝缘体（10） 覆盖绝缘体（10）的金属壳（50）; 和金属壳（50）内的搁板部分（57）。 绝缘体（10）包括形成在锥形部（14）的前端侧的第二柱部（15）。 当由通过金属壳体50的搁板部57的前端57a且与轴线O正交的第一平面PS1包围的体积时，从外周延伸的曲面CS （15）的外周面，绝缘体（10）的外周面被定义为A，并且由第一平面PS1，曲面CS，第二平面PS2围绕的体积 （50）的轴向孔（50a）并且与轴线O正交，并且绝缘体（10）的轴向孔（12）被定义为B时，满足关系表达式0.9≤A/B≤2.4。
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公开(公告)号：EP1837967B1
公开(公告)日：2011-03-02
申请号：EP07005726.0
申请日：2007-03-20
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公开(公告)号：EP2099106A3
公开(公告)日：2013-04-17
申请号：EP09154570.7
申请日：2009-03-06
发明人： Nakamura, Toru , Kato, Tomoaki , Yamada, Yuichi
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来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。
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公开(公告)号：EP2088653A2
公开(公告)日：2009-08-12
申请号：EP09152216.9
申请日：2009-02-05
IPC分类号： H01T13/50
摘要： A plasma jet ignition plug is provided which is capable of restraining occurrence of channeling while reducing removal of energy of plasma through a ground electrode at the time of emission of plasma. The plasma jet ignition plug includes a ground electrode (201) which projects inwardly from a front end face (57) of a metallic shell (50) toward an opening end (14) of a cavity (60) which is open at a front end face (16) of an insulator (10). A projecting distal end (203) which forms a spark discharge gap between the distal end (203) and a center electrode (20) within a cavity (60) is located inwardly, 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 (14) of the cavity (60).
摘要翻译： 提供了等离子体喷射火花塞，其能够抑制在发射等离子体时通过接地电极去除等离子体的能量的同时发生沟道化。 等离子喷射火花塞包括从金属壳（50）的前端面（57）向内突出的空腔（60）的开口端（14）向内突出的接地电极（201），空腔（60）的前端开口 绝缘体（10）的表面（16）。 在空腔（60）内的远端（203）和中心电极（20）之间形成火花放电间隙的突出远端（203）相对于与轴线O正交的直径方向P向内定位， 位于距空腔（60）的开口端（14）径向向外0.5mm的位置。
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公开(公告)号：EP1990635B1
公开(公告)日：2016-11-16
申请号：EP08007054.3
申请日：2008-04-09
发明人： Kume, Makoto , Yamada, Yuichi
IPC分类号： G01N27/407
CPC分类号： G01N27/4077 , Y10T29/49826
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公开(公告)号：EP1837967A3
公开(公告)日：2010-03-03
申请号：EP07005726.0
申请日：2007-03-20
发明人： Hagiwara, Katsunori , Nagasawa, Satoshi , Matutani, Wataru , Nakamura, Toru , Kato, Tomoaki , Yamada, Yuichi
摘要： A plasma-jet spark plug includes a metal shell, an electrical insulator retained in the metal shell, a center electrode held in an axial hole of the electrical insulator to define a cavity by a front end face of the center electrode and an inner circumferential surface of the insulator axial hole and a ground electrode arranged on a front end of the electrical insulator. The ground electrode has an opening defining portion defining an opening for communication between the cavity and the outside of the spark plug. The opening defining portion is located radially inside of or in contact with a first imaginary circular conical surface where the first imaginary circular conical surface has an axis coinciding with an axis of the spark plug and a vertex angle of 120° opening toward a front end of the spark plug and passing through a front edge of the insulator axial hole.
摘要翻译： 本发明公开了一种等离子流火花塞，包括金属壳体，保持在金属壳体内的电绝缘体，中心电极保持在电绝缘体的轴向孔中，以通过中心电极的前端面和内周面 所述绝缘体轴向孔和布置在所述电绝缘体的前端上的接地电极。 接地电极具有开口限定部分，开口限定部分限定用于在空腔和火花塞的外部之间连通的开口。 开口限定部分位于第一假想圆锥表面的径向内侧或接触第一假想圆锥表面的地方，其中第一假想圆锥表面具有与火花塞的轴线重合的轴线和120°的顶角， 火花塞并穿过绝缘子轴向孔的前缘。
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公开(公告)号：EP3382830A1
公开(公告)日：2018-10-03
申请号：EP18162849.6
申请日：2018-03-20
发明人： Usami, Kohei , Yamada, Yuichi
摘要： A spark plug includes: a center electrode (50); an insulator (11) having a through hole (29, 44) that surrounds at least a part of the center electrode (50); a metal shell (60) that holds the insulator (11) from an outer peripheral side thereof and that is substantially tubular, and the metal shell (60) includes a shelf portion (67) that projects radially inward. The insulator (11) includes an engagement portion (24) that is engaged with the shelf portion (67) from the front side, and a front end portion (42) that is present at the front side with respect to a front end of the metal shell (60). At least a part of the front end portion (42) has an outer diameter larger than an inner diameter of the metal shell (60) at the front side with respect to the shelf portion (67). The insulator (11) has, in a portion including a front end of the insulator (11), a diameter-enlarged portion (47) at which a diameter of the through hole (44) increases and which is spaced apart from an outer peripheral surface of the center electrode (50).
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公开(公告)号：EP2088653A3
公开(公告)日：2013-05-22
申请号：EP09152216.9
申请日：2009-02-05
摘要： A plasma jet ignition plug is provided which is capable of restraining occurrence of channeling while reducing removal of energy of plasma through a ground electrode at the time of emission of plasma. The plasma jet ignition plug includes a ground electrode (201) which projects inwardly from a front end face (57) of a metallic shell (50) toward an opening end (14) of a cavity (60) which is open at a front end face (16) of an insulator (10). A projecting distal end (203) which forms a spark discharge gap between the distal end (203) and a center electrode (20) within a cavity (60) is located inwardly, 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 (14) of the cavity (60).
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公开(公告)号：EP2099106A2
公开(公告)日：2009-09-09
申请号：EP09154570.7
申请日：2009-03-06
发明人： Nakamura, Toru , Kato, Tomoaki , Yamada, Yuichi
IPC分类号： H01T21/02
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： 提供了一种火花塞的制造方法。 所述方法包括：通过将所述中心电极的前端设置在比所述绝缘体的前端更靠内的位置处，制备具有设置在其前端部分处的空腔的绝缘体; 在所述金属壳体的内部构造绝缘体，使得所述绝缘体的前端位于比所述金属壳体的前端更靠近后端侧的位置; 去除从绝缘体的前端面突出的金属壳的前端部的至少一部分; 以及在去除步骤之后将接地电极布置在金属壳的前端部处并且将接地电极和金属壳焊接在一起。
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