公开(公告)号：US20150162725A1

公开(公告)日：2015-06-11

申请号：US14538262

申请日：2014-11-11

Applicant: NGK Spark Plug Co., LTD.

Inventor： Tatsunori YAMADA ,  Yusuke FUJI ,  Tomoyuki IGARASHI ,  Kei TAKAHASHI

IPC: H01T13/32

CPC classification number: H01T13/32

Abstract: A spark plug includes: an insulator having an axial hole; a conductive member disposed around the insulator; a center electrode disposed inside the axial hole, having a bar shape extending in the axial direction, and located on a rear end side with respect to a front end of the conductive member; a ground electrode forming a spark gap between the ground electrode and the center electrode; and a connection part including a plurality of spokes extending in a radial direction whose inner ends are connected to the ground electrode, and connecting the conductive member to the ground electrode. The connection part includes a joint part that is jointed to an inner surface of the conductive member, and the ground electrode has at least one of a notch and a groove at a position that is different from a position connected to the spokes in a circumferential direction.

Abstract translation: 火花塞包括：具有轴向孔的绝缘体; 设置在所述绝缘体周围的导电构件; 设置在所述轴向孔内的中心电极，所述中心电极具有沿轴向延伸的杆状，并且相对于所述导电构件的前端位于后端侧; 在接地电极和中心电极之间形成火花隙的接地电极; 以及连接部，其包括在其内端与接地电极连接的径向延伸的多个辐条，并且将导电部件连接到接地电极。 连接部包括与导电部件的内表面接合的接合部，并且接地电极具有与沿着圆周方向连接到辐条的位置不同的位置的凹口和凹槽中的至少一个 。

公开(公告)号：US20190250056A1

公开(公告)日：2019-08-15

申请号：US16316383

申请日：2017-10-25

Applicant: NGK SPARK PLUG CO., LTD. ,  MIKUNI CORPORATION

Inventor： Junki IWABUCHI ,  Tatsunori YAMADA ,  Tomoya SATO

IPC: G01L9/08 ,  G01L23/10 ,  G01L23/26 ,  G01L9/00 ,  G01L19/04

CPC classification number: G01L9/08 ,  G01L9/0052 ,  G01L19/04 ,  G01L23/10 ,  G01L23/26

Abstract: A pressure sensor including a housing extending along an axial line, a diaphragm fixed to a front-end side of the housing, a piezoelectric unit disposed in a hole in the housing and including a piezoelectric element, a transmission member that transmits deformation of the diaphragm to the piezoelectric unit, and a guide member having a through hole extending along the axial line and surrounding the piezoelectric unit in the through hole. (SL/AL)≤0.26 is satisfied in the cross section perpendicular to the axial line passing through the piezoelectric element, where SL is the maximum value of the distance in the radial direction between the center of the through hole and the center of the piezoelectric element and AL is the maximum value of the distance in the radial direction between the outside surface of the piezoelectric element and the center of the through hole.

公开(公告)号：US20160341617A1

公开(公告)日：2016-11-24

申请号：US15158919

申请日：2016-05-19

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Tatsunori YAMADA ,  Junki IWABUCHI

IPC: G01L9/00 ,  B23K26/21

CPC classification number: G01L9/0052 ,  B23K26/21 ,  G01L23/10

Abstract: A method of manufacturing a pressure sensor including a tubular housing having a lid-shaped support plate formed at one end of the housing, a diaphragm, a piezoelectric element for outputting an electrical signal corresponding to pressure received by the diaphragm, and a rod-shaped transmission section for transmitting the pressure to the piezoelectric element. The method includes the steps of accommodating the piezoelectric element into the housing, and fixing the transmission section to the housing through the diaphragm in a state in which a predetermined preload is applied to the piezoelectric element in an axial direction of the housing by pressing the piezoelectric element against the support plate by the transmission section.

Abstract translation: 一种制造压力传感器的方法，该压力传感器包括：管状壳体，其具有形成在壳体的一端的盖状支撑板;隔膜;压电元件，用于输出对应于由隔膜接收的压力的电信号;以及杆状 传递部分，用于将压力传递到压电元件。 该方法包括以下步骤：将压电元件容纳在壳体中，并且通过压迫压电元件在壳体的轴向方向上对压电元件施加预定的预载荷的状态，将透射部分固定到壳体上 元件通过传动部分抵靠支撑板。

公开(公告)号：US20180202886A1

公开(公告)日：2018-07-19

申请号：US15743744

申请日：2016-07-08

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Tatsunori YAMADA ,  Shunsuke TSUGA ,  Yusuke FUJI ,  Junki IWABUCHI ,  Daiki GOTO

IPC: G01L23/18 ,  F02B77/08

CPC classification number: G01L23/18 ,  F02B77/085 ,  F02F1/24 ,  G01L19/0681 ,  G01L23/08 ,  G01L23/10

Abstract: A pressure sensor includes: a diaphragm joined to a front side of a housing via a joint portion; a sensor portion; a connection portion connecting the diaphragm to the sensor portion; and a heat receiving portion disposed at the front side of the diaphragm. When: a minimum value of an area of a minimum inclusion region which is a virtual region, which include a cross-section of a portion from the heat receiving portion to the diaphragm and of which an overall length of a contour become minimum on a cross-section perpendicular to the axial line, is defined as a connection area Sn; and an area of a region surrounded by the joint portion on a projection plane perpendicular to the axial line when the diaphragm and the heat receiving portion are projected onto the projection plane is defined as a diaphragm effective area Sd, (Sn/Sd)≤0.25 is satisfied.

公开(公告)号：US20160299024A1

公开(公告)日：2016-10-13

申请号：US15092253

申请日：2016-04-06

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Tatsunori YAMADA ,  Junki IWABUCHI

IPC: G01L7/08 ,  G01L19/14

CPC classification number: G01L7/082 ,  F23Q2007/005 ,  G01L19/145 ,  G01M15/08

Abstract: A pressure sensor includes a tubular housing; a diaphragm which is joined to one end portion of the housing through a fusion zone; and a sensor element which is disposed in the housing and to which pressure received by the diaphragm is transmitted. As viewed in a section which contains the center axis of the housing, a pair of the fusion zones exist, and each of the fusion zones is formed in such an inclined manner that its distance from the center axis increases as it extends from the outer surface of the diaphragm toward the other-end-portion side of the housing.

Abstract translation: 压力传感器包括管状壳体; 隔膜，其通过熔融区域接合到壳体的一个端部; 以及传感器元件，其设置在壳体中并且由隔膜接收的压力被传递。 从包含壳体的中心轴的部分看，存在一对熔接区域，并且每个熔融区域以这样的倾斜方式形成，使得其与中心轴的距离随着从外表面延伸而增加 的隔膜朝向壳体的另一端部侧。

公开(公告)号：US20140145624A1

公开(公告)日：2014-05-29

申请号：US14087412

申请日：2013-11-22

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Kenji BAN ,  Tatsunori YAMADA ,  Tomokatsu KASHIMA ,  Katsutoshi NAKAYAMA

IPC: H01T15/00

CPC classification number: H01T15/00 ,  F02P3/01 ,  F02P3/04 ,  F02P23/04 ,  F02P23/045

Abstract: An ignition system includes an ignition plug, a discharge power supply for applying a high voltage to the gap of the ignition plug, a high-frequency power supply for supplying a high-frequency current to the gap, a matching unit provided between the ignition plug and the high-frequency power supply, and a mixer through which currents output from the two power supplies flow. An oscillation frequency fs (Hz) which maximizes the current flowing between the matching unit and the mixer when spark discharge is generated and an oscillation frequency fo (Hz) which maximizes the current flowing between the matching unit and the mixer when spark discharge is not generated satisfy a relation fs/fo≧0.85. Thus, a current whose oscillation frequency is equal to the oscillation frequency fs flows between the matching unit and the mixer when spark discharge is not generated.

Abstract translation: 点火系统包括火花塞，用于向火花塞的间隙施加高电压的放电电源，用于向间隙提供高频电流的高频电源;设置在火花塞之间的匹配单元 和高频电源以及从两个电源输出的电流流过的混频器。 当不产生火花放电时，使匹配单元和混合器之间流动的电流最大化的振荡频率fs（Hz），以及当不产生火花放电时使匹配单元和混合器之间的电流最大化的振荡频率fo（Hz） 满足关系fs /fo≥0.85。 因此，当不产生火花放电时，其振荡频率等于振荡频率fs的电流在匹配单元和混合器之间流动。