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公开(公告)号：EP1895629B1
公开(公告)日：2009-12-23
申请号：EP07253400.1
申请日：2007-08-29
发明人： Kumagai, Kenichi , Mizoguchi, Koji
IPC分类号： H01T13/36
CPC分类号： H01T13/36
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公开(公告)号：EP1414120A3
公开(公告)日：2006-12-27
申请号：EP03256720.8
申请日：2003-10-23
IPC分类号： H01T13/39
CPC分类号： H01T13/39
摘要： A spark plug for use in an internal combustion engine includes a tubular insulator (140, 340) having an axial hole extending therethrough; a center electrode (120) fitted into the axial hole and having a distal end portion (120b) protruding from a distal end of the insulator (140, 340); and a ground electrode (110, 310) arranged such that at least a portion of spark discharge generated between the ground electrode (110, 310) and the distal end portion (120b) of the center electrode includes creeping discharge along the surface of the distal end portion of the insulator (140, 340). The distal end portion (120b) of the center electrode (120) contains Ni as a primary component in an amount of 80 wt% or more and Fe and Cr as secondary components in a total amount of 2.5 wt% to 10.0 wt% and further contains Al as a secondary component in an amount of 0.2 wt% to 0.8 wt%.
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公开(公告)号：EP1237244B1
公开(公告)日：2008-04-16
申请号：EP02003904.6
申请日：2002-02-21
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公开(公告)号：EP1686665B1
公开(公告)日：2007-12-26
申请号：EP06001439.6
申请日：2006-01-24
发明人： Kumagai, Kenichi , Kondo, Teruyuki , Amano, Kozo , Yamazaki, Kazuo c/o Sumitomo Electric Ind., Ltd. , Nakai, Yosihiro c/o Sumitomo Electric Ind., Ltd. , Numano, Masatada c/o Sumitomo Electric Ind., Ltd.
IPC分类号： H01T13/39
CPC分类号： H01T13/39
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公开(公告)号：EP1237244A3
公开(公告)日：2006-05-17
申请号：EP02003904.6
申请日：2002-02-21
摘要： A spark plug (100) includes: a central electrode (3); an insulator (2) surrounding the central electrode (3) radially; a metallic shell (1) surrounding the insulator (2) radially; and a ground electrode (4) having a first end connected to the metallic shell (1) and a second end defining a side face. The ground electrode (4) is so bent that the side face of the second end faces the central electrode (3). The ground electrode (4) contains: a nickel in a range from 58% to 71% by weight, a chromium in a range from 21% to 25% by weight, an iron in a range from 7% to 20% by weight, and an aluminum in a range from 1% to 2% by weight. The ground electrode (4) has a Vickers hardness in a range from Hv 140 to Hv 220 through a Vickers hardness test specified in Japanese Industrial Standard Z2244. A load 9.8 N is applied to the ground electrode (4) in the hardness test.
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公开(公告)号：EP1895629A1
公开(公告)日：2008-03-05
申请号：EP07253400.1
申请日：2007-08-29
发明人： Kumagai, Kenichi , Mizoguchi, Koji
IPC分类号： H01T13/36
CPC分类号： H01T13/36
摘要： A spark plug including a center electrode; an insulator; a metal shell; a ground electrode; and an annular packing, all as defined herein, wherein the packing has a hardness greater than or equal to a hardness of the stepped portion of the metal shell or has a Vickers hardness of not less than 300 Hv. Preferably, a difference between the hardness of the packing and the hardness of the stepped portion of the metal shell is from 120 Hv to 160 Hv, and the packing has a Vickers hardness of not more than 500 Hv.
摘要翻译： 火花塞包括中心电极; 绝缘体; 一个金属外壳; 接地电极; 和环形填料，其全部如本文所定义，其中填料具有大于或等于金属壳体的台阶部分的硬度的硬度或具有不小于300Hv的维氏硬度。 优选地，密封件的硬度与金属壳体的台阶部分的硬度之间的差值为120Hv至160Hv，并且密封件的维氏硬度不超过500Hv。
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公开(公告)号：EP1686665A1
公开(公告)日：2006-08-02
申请号：EP06001439.6
申请日：2006-01-24
发明人： Kumagai, Kenichi , Kondo, Teruyuki , Amano, Kozo , Yamazaki, Kazuo c/o Sumitomo Electric Ind., Ltd. , Nakai, Yosihiro c/o Sumitomo Electric Ind., Ltd. , Numano, Masatada c/o Sumitomo Electric Ind., Ltd.
IPC分类号： H01T13/39
CPC分类号： H01T13/39
摘要： A spark plug comprising: a cylindrical metal shell; a cylindrical insulator provided in an inner hole of said metal shell; a center electrode provided in a leading end side inner hole of said insulator; and a ground electrode having one end bonded to a leading end side of said metal shell and having another end face forming a spark discharge gap with said center electrode, wherein said ground electrode comprises an electrode material containing from 0.5 to 1.5 wt.% of Si, from 0.5 to 1.5 wt.% of Al, from 0.02 to 1.0 wt.% of at least one of Ti, V, Zr, Nb and Hf, from 0.03 to 0.09 wt.% of C and 95.5 wt.% or more of Ni, and having a specific resistance at 20°C of 25 µΩcm or less.
摘要翻译： 一种火花塞，包括：一个圆柱形金属壳; 设置在所述金属壳的内孔中的圆柱形绝缘体; 设置在所述绝缘体的前端侧内孔中的中心电极; 以及接地电极，其一端与所述金属壳的前端侧接合，另一端面与所述中心电极形成火花放电间隙，所述接地电极由含有0.5〜1.5重量％的Si ，0.5至1.5重量％的Al，0.02至1.0重量％的Ti，V，Zr，Nb和Hf中的至少一种，0.03至0.09重量％的C和95.5重量％或更多的 Ni，20℃时的电阻率为25μΩcm以下。
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公开(公告)号：EP1414120A2
公开(公告)日：2004-04-28
申请号：EP03256720.8
申请日：2003-10-23
IPC分类号： H01T13/39
CPC分类号： H01T13/39
摘要： A spark plug for use in an internal combustion engine includes a tubular insulator (140, 340) having an axial hole extending therethrough; a center electrode (120) fitted into the axial hole and having a distal end portion (120b) protruding from a distal end of the insulator (140, 340); and a ground electrode (110, 310) arranged such that at least a portion of spark discharge generated between the ground electrode (110, 310) and the distal end portion (120b) of the center electrode includes creeping discharge along the surface of the distal end portion of the insulator (140, 340). The distal end portion (120b) of the center electrode (120) contains Ni as a primary component in an amount of 80 wt% or more and Fe and Cr as secondary components in a total amount of 2.5 wt% to 10.0 wt% and further contains Al as a secondary component in an amount of 0.2 wt% to 0.8 wt%.
摘要翻译： 火花塞（100）包括具有远端部分（100b）的中心电极（120），其构造为使得其表面由镍（> = 80重量％）为主要成分的镍合金和铁（2.5重量％）构成， 和铬（10重量％）作为次要组分。 镍合金还包括作为次要组分的铝（0.2-0.8重量％）。 火花塞包括具有沿轴向延伸的轴向孔的管状绝缘体（140），中心电极装配到轴向孔中并且具有从绝缘体的远端突出的远端部分，以及位于中心电极的直径外侧的接地电极（110） 并且与绝缘体的远端部分和中心电极的远端部分位置相关。 接地电极被构造成使得在接地电极和远端部分之间产生的火花放电的部分包括沿着绝缘体的远端部分的表面的沿面放电。 中心电极的远端部分构造成使其表面由镍（> = 80重量％）为主要成分的镍合金和铁（2.5重量％）和铬（10重量％）为二次 组件。 镍合金还包括作为次要组分的铝（0.2-0.8重量％）。
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公开(公告)号：EP2410243A3
公开(公告)日：2013-01-09
申请号：EP11174774.7
申请日：2011-07-21
发明人： Kumagai, Kenichi , Okada, Hirofumi , Ishii, Shuei
IPC分类号： F23Q7/00
CPC分类号： F23Q7/001
摘要： [Problem] To provide a glow plug with which it is possible to improve heat resistance and durability in comparison with a heretofore known one.
[Means for Resolution] A glow plug uses a sheathed heater with a heating coil housed in a sheath tube. The sheath tube, being formed from a nickel base alloy containing 21 to 30 percent by mass of chromium (Cr), 0.05 to 0.30 percent by mass of carbon (C), 1.0 to 2.4 percent by mass of aluminum (Al), and 0.1 to 0.3 percent by mass of one kind or more among titanium (Ti), zirconium (2r), and niobium (Nb), is such that when examining a metal structure in a circumferential transverse section of the sheath tube, the size of the metal structure has a variation of 2 or less in crystal grain size number according to JIS G0551 (2005), and Vickers hardness is within a range of 200 to 400.-
公开(公告)号：EP2410243A2
公开(公告)日：2012-01-25
申请号：EP11174774.7
申请日：2011-07-21
发明人： Kumagai, Kenichi , Okada, Hirofumi , Ishii, Shuei
IPC分类号： F23Q7/00
CPC分类号： F23Q7/001
摘要： [Problem] To provide a glow plug with which it is possible to improve heat resistance and durability in comparison with a heretofore known one.
[Means for Resolution] A glow plug uses a sheathed heater with a heating coil housed in a sheath tube. The sheath tube, being formed from a nickel base alloy containing 21 to 30 percent by mass of chromium (Cr), 0.05 to 0.30 percent by mass of carbon (C), 1.0 to 2.4 percent by mass of aluminum (Al), and 0.1 to 0.3 percent by mass of one kind or more among titanium (Ti), zirconium (2r), and niobium (Nb), is such that when examining a metal structure in a circumferential transverse section of the sheath tube, the size of the metal structure has a variation of 2 or less in crystal grain size number according to JIS G0551 (2005), and Vickers hardness is within a range of 200 to 400.摘要翻译： [问题]提供一种与先前已知的电热塞相比可以提高耐热性和耐久性的电热塞。 [解决方法]电热塞使用带护套管的加热线圈的护套加热器。 由含有21〜30质量％的铬（Cr），0.05〜0.30质量％的碳（C），1.0〜2.4质量％的铝（Al）和0.1重量％的镍基合金形成的护套管 在钛（Ti），锆（2r）和铌（Nb）中，为0.3质量％以下，为了在外皮管的周向横截面检查金属结构时，金属的尺寸 结构根据JIS G0551（2005）的晶粒尺寸数的变化为2以下，维氏硬度在200〜400的范围内。
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