公开(公告)号：US20170187170A1

公开(公告)日：2017-06-29

申请号：US15315105

申请日：2015-05-26

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke SUMOYAMA ,  Tatsuya GOZAWA ,  Magoki SHIMADATE ,  Yusuke KAWASHIMA

IPC: H01T13/39 ,  H01T13/32

CPC classification number: H01T13/39 ,  H01T13/32

Abstract: An electrode tip for a spark plug, wherein Pt is contained as a main component, 7% by mass or more of Rh is contained, and a total content of Pt and Rh is greater than or equal to 95% by mass. The electrode tip includes: a narrow portion having the same cross-sectional shape in a direction of an axis; and a wide portion which is adjacent to the narrow portion and has a cross-sectional area, in a radial direction, which is greater than the narrow portion.

公开(公告)号：US20150207299A1

公开(公告)日：2015-07-23

申请号：US14590075

申请日：2015-01-06

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Kenji BAN ,  Yoshikazu KATAOKA ,  Magoki SHIMADATE ,  Tomoaki KATO

IPC: H01T13/32

CPC classification number: H01T13/32 ,  H01T13/16 ,  H01T13/20

Abstract: A spark plug wherein an outer diameter of a first face that is a gap foliating face of the center electrode tip is denoted as R1, an outer diameter of a second face that is a gap forming face of the ground electrode tip is denoted as R2, a length of the gap is denoted as G1, and an average distance of a distance between an end in the first direction of the first face and an end in the first direction of the second face and a distance between an end in the second direction of the first face and an end in the second direction of the second face is denoted as G2, R1

Abstract translation: 将作为中心电极头的间隙面的第一面的外径表示为R1的火花塞，作为接地电极头的间隙形成面的第二面的外径表示为R2， 间隔的长度表示为G1，第一面的第一方向的端部与第二面的第一方向的端部之间的距离与第二面的端部的距离之间的距离的平均距离 第二面的第一面和第二方向的端部表示为G2，R1

公开(公告)号：US20160268780A1

公开(公告)日：2016-09-15

申请号：US15028786

申请日：2015-04-07

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Magoki SHIMADATE

IPC: H01T13/32 ,  H01T13/39

CPC classification number: H01T13/32 ,  H01T13/39

Abstract: In a spark plug, at a cross section of a ground electrode which is orthogonal to a longitudinal direction of an electrode base material and passes an axis of an electrode tip, a surface of the base material is exposed, and the following conditions are satisfied: 1.2E≦F≦1.9E; 0.05 mm≦Da≦0.30 mm; 0.05 mm≦Db≦0.30 mm; and 0.20 mm≦J≦0.70 mm2.

Abstract translation: 在火花塞中，在接地电极的与电极母材的长度方向正交且通过电极头的轴线的截面上露出基材的表面，满足以下条件： 1.2E≤F≤1.9E; 0.05mm≤Da≤0.30mm; 0.05mm≤Db≤0.30mm; 0.20mm≤J≤0.70mm2。