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1. 发明授权

US08810119B2 Spark plug for an internal combustion engine 有权
标题翻译：用于内燃机的火花塞
公开(公告)号：US08810119B2
公开(公告)日：2014-08-19
申请号：US13944151
申请日：2013-07-17
申请人： Denso Corporation
发明人： Toshikazu Shimizu , Kouji Yamanaka
IPC分类号： H01T13/20
CPC分类号： H01T13/20 , H01T13/32 , H01T13/39
摘要： A spark plug includes a center electrode having an end portion, and an earth electrode having an opposing portion opposed to the end portion via a gap. The end portion has an end-projecting portion. The opposing portion has an opposing-projecting portion opposed to the end-projecting portion. The end-projecting portion and the opposing-projecting portion have non-projection direction opposing surfaces which are parallel to and opposed to each other with a minimum distance and in a direction other than a projection direction. A first opposing area of a portion which includes the non-projection direction opposing surfaces and where the end-projecting portion and the opposing-projecting portion are opposed to each other with the minimum distance is larger than a second opposing area obtained when a plane of the end-projecting portion and a plane of the opposing-projecting portion, which are orthogonal to the projection direction, are opposed to each other in the projection direction.
摘要翻译：火花塞包括具有端部的中心电极和具有经由间隙与端部相对的相对部分的接地电极。端部具有端部突出部。相对部分具有与端部突出部分相对的相对突出部分。端部突出部分和相对突出部分具有平行于彼此且具有最小距离并且在除了突出方向以外的方向上彼此相对的非突出方向相对表面。包括非投影方向相对表面并且端部突出部分和相对突出部分以最小距离彼此相对的部分的第一相对区域大于当平面与突出方向正交的端部突出部分和相对突出部分的平面在突出方向上彼此相对。

2. 发明授权

US09397482B2 Spark plug for internal combustion engine 有权
标题翻译：内燃机火花塞
公开(公告)号：US09397482B2
公开(公告)日：2016-07-19
申请号：US14593127
申请日：2015-01-09
申请人： DENSO CORPORATION
发明人： Kouji Yamanaka
IPC分类号： H01T13/20 , H01T13/54 , H01T13/32
CPC分类号： H01T13/54 , H01T13/32
摘要： A spark plug for an internal combustion engine includes a tubular housing, a tubular insulator held inside the housing, a center electrode held inside the insulator, a ground electrode disposed so as to form a spark discharge gap with the center electrode, and a plug cover fixed to a distal end portion of the housing so as to form an auxiliary combustion chamber with the housing. The plug cover is formed with at least one through hole for communicating between inside of the auxiliary chamber and outside of the plug cover. The ground electrode is formed so as to project from an inner surface of the plug cover toward the inside of the auxiliary combustion chamber.
摘要翻译：一种用于内燃机的火花塞，包括管状壳体，保持在壳体内部的管状绝缘体，保持在绝缘体内部的中心电极，设置成与中心电极形成火花放电间隙的接地电极，以及插头盖固定到壳体的远端部分，以便与壳体形成辅助燃烧室。插头盖形成有至少一个用于在辅助室的内部和插头盖外部之间连通的通孔。接地电极形成为从插头盖的内表面向辅助燃烧室的内部突出。

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