公开(公告)号：US20180301877A1

公开(公告)日：2018-10-18

申请号：US15769120

申请日：2016-10-07

Applicant: Mitsubishi Electric Corporation ,  NGK SPARK PLUG CO., LTD.

Inventor： Taichiro TAMIDA ,  Takahiro INOUE ,  Takashi HASHIMOTO ,  Akira NAKAGAWA ,  Tomokazu SAKASHITA ,  Takayoshi NAGAI ,  Kimihiko TANAYA ,  Hiroyuki KAMEDA ,  Yuichi YAMADA ,  Kenji BAN

IPC: H01T13/32 ,  F02B23/08 ,  F02P13/00 ,  F02P5/145 ,  F02P3/01

CPC classification number: H01T13/32 ,  F02B23/08 ,  F02P3/01 ,  F02P5/145 ,  F02P13/00 ,  F02P15/10 ,  F02P23/04 ,  H01T13/34 ,  H01T13/467 ,  H01T13/50 ,  H01T13/52 ,  H01T13/54 ,  H01T19/04 ,  H05H1/2406 ,  H05H2001/2412 ,  H05H2001/2418

Abstract: In an ignition plug, since a ground electrode is formed in a thin-rod-shape or a mesh-like shape, sufficiently strong radicals are locally generated by a barrier discharge, an anti-inflammation effect by the electrode is small, and the growth of a flame is hardly hindered. Furthermore, by making the thickness dimension of a second dielectric facing a discharge region uniform, the barrier discharge is spread over the surface of the second dielectric, the generation of the radicals is maintained, and combustibility after ignition is promoted. Furthermore, because an end portion of a high voltage electrode and a ground electrode are disposed to face each other within a combustion chamber, a fuel gas introduced into the combustion chamber is liable to flow into the discharge region, and is easily ignited by the radicals generated due to the discharge.

公开(公告)号：US20150330939A1

公开(公告)日：2015-11-19

申请号：US14710762

申请日：2015-05-13

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke TAHIRA ,  Keiichi NODA ,  Shingo ITO ,  Atsunori OKADA ,  Yuichi YAMADA

IPC: G01N27/407 ,  G01N27/409

CPC classification number: G01N27/4074 ,  G01N27/4077 ,  G01N27/4078 ,  G01N27/409 ,  Y10T29/42 ,  Y10T29/49904 ,  Y10T29/49908

Abstract: A method for manufacturing a sensor intermediate product includes: disposing a tubular holder and a tubular compact in a tubular metallic shell, and inserting a metallic pin into a first insertion hole of the holder and a second insertion hole of the compact; compressing the compact so as to form a filling member intermediate having a shape which brings the filling member intermediate into pressure contact with the inner wall surface of the metallic shell and allows removal of the metallic pin from the second insertion hole; pulling out the metallic pin from the first insertion hole and the second insertion hole; inserting a sensor element into the first insertion hole and the second insertion hole; and compressing the filling member intermediate to thereby form a filling member which fixes the sensor element inside of the metallic shell.

Abstract translation: 一种传感器中间产品的制造方法，其特征在于，在管状金属外壳中设置管状保持架和管状紧固件，将金属销插入到保持架的第一插入孔和第二插入孔中。 压缩压块以形成填充构件中间体，其具有使填充构件中间与金属壳体的内壁表面压力接触的形状，并允许从第二插入孔移除金属销; 从第一插入孔和第二插入孔拉出金属销; 将传感器元件插入到所述第一插入孔和所述第二插入孔中; 并压缩填充构件中间体，从而形成将传感器元件固定在金属壳体内部的填充构件。

公开(公告)号：US20140339081A1

公开(公告)日：2014-11-20

申请号：US14278241

申请日：2014-05-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke TAHIRA ,  Shingo ITO ,  Keiichi NODA ,  Yuichi YAMADA ,  Makoto KUME

IPC: G01N27/407

CPC classification number: G01N27/4077 ,  G01M15/102 ,  G01N1/00 ,  G01N27/407

Abstract: Disclosed is a gas sensor including a metal shell, a ceramic holder placed in an axial inner hole of the metal shell and a sensor element inserted through an insertion hole of the ceramic holder. The ceramic holder has a recessed hole recessed toward the rear from a front-facing surface of the ceramic holder. The sensor element has, at a front end part thereof, a detection portion covered with a porous protection layer such that a rear end part of the protection layer is accommodated in the recessed hole with a space left therebetween. Further, the ceramic holder has a front circumferential edge defined between an inner circumferential surface of the recessed hole and the front-facing surface of the ceramic holder such that the whole of the front circumferential edge is located radially inside of a radially innermost position of the axial hole.

Abstract translation: 公开了一种气体传感器，其包括金属壳，设置在金属壳的轴向内孔中的陶瓷保持器和通过陶瓷保持器的插入孔插入的传感器元件。 陶瓷保持器具有从陶瓷保持器的前表面向后凹入的凹入孔。 传感器元件的前端部分具有覆盖有多孔保护层的检测部分，使得保护层的后端部分容纳在凹孔中并留有空隙。 此外，陶瓷保持器具有限定在凹孔的内周面和陶瓷保持件的前表面之间的前周缘，使得前周缘的整体位于径向最内侧的位置 轴向孔。

公开(公告)号：US20140338424A1

公开(公告)日：2014-11-20

申请号：US14278246

申请日：2014-05-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Makoto KUME ,  Nobuhiro INOUE ,  Daisuke TAHIRA ,  Shingo ITO ,  Yuichi YAMADA

IPC: G01N1/00 ,  G01M15/10

CPC classification number: G01N27/4077 ,  G01M15/102 ,  G01N1/00 ,  G01N27/407

Abstract: Disclosed is a gas sensor having a metal shell, a holder placed in the metal shell and a sensor element inserted through an axial insertion hole of the holder. The holder has a recessed portion recessed toward the rear from a front end face of the holder. The sensor element has, at a front end part thereof, a detection portion covered with a porous protection layer such that a rear end of the porous protection layer is situated within the recessed portion of the holder and is located at the rear side with respect to the front end face of the holder while maintaining a space between an inner circumferential surface of the recessed portion and an outer circumferential surface of the porous protection layer.

Abstract translation: 公开了一种气体传感器，其具有金属外壳，保持器放置在金属外壳中，以及通过保持器的轴向插入孔插入的传感器元件。 保持器具有从保持器的前端面朝向后方凹陷的凹部。 传感器元件的前端部分具有覆盖有多孔保护层的检测部分，使得多孔保护层的后端位于保持器的凹部内并位于相对于 同时保持凹部的内周面与多孔保护层的外周面之间的空间。

公开(公告)号：US20140299469A1

公开(公告)日：2014-10-09

申请号：US14246530

申请日：2014-04-07

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Takehiro OBA ,  Yuichi YAMADA ,  Shingo ITO ,  Shogo NAGATA

IPC: G01N27/407

CPC classification number: G01N27/407

Abstract: A sensor including: a detection element; terminal members; and a separator, wherein at least one specific first electrode terminal portion and an other first electrode terminal portion are formed on a first main surface of the detection element, wherein a second electrode terminal portion formed on a second main surface of the detection element is disposed so as to be offset from the specific first electrode terminal portion and to overlap with the other first electrode terminal portion in the axial direction, and in a thickness direction, a distance between the detection element and a specific first frame body portion brought into electrical connection with the specific first electrode terminal portion is larger than a distance between the detection element and the other first frame body portion brought into electrical connection with the other first electrode portion.

Abstract translation: 一种传感器，包括：检测元件; 终端会员 以及分离器，其中在所述检测元件的第一主表面上形成有至少一个特定的第一电极端子部分和另一个第一电极端子部分，其中形成在所述检测元件的第二主表面上的第二电极端子部分被布置 以便偏离特定的第一电极端子部分，并且在轴向上与另一个第一电极端子部分重叠，并且在厚度方向上，检测元件与形成电连接的特定的第一框架体部分之间的距离 特定的第一电极端子部分大于检测元件和与另一个第一电极部分电连接的另一个第一框架体部分之间的距离。

公开(公告)号：US20230178968A1

公开(公告)日：2023-06-08

申请号：US17998995

申请日：2021-09-14

Applicant: NGK Spark Plug Co., LTD.

Inventor： Kengo FUJIMURA ,  Syoma TSUMAGARI ,  Soh TOHARA ,  Yuichi YAMADA

IPC: H01T13/41 ,  H01T13/34

CPC classification number: H01T13/41 ,  H01T13/34

Abstract: A spark plug includes a tubular metallic shell, a tubular insulator held in the metallic shell and having an axial hole, a center electrode held at one end of the axial hole, a metallic terminal member held at the other end of the axial hole, and a resistor element disposed between the center electrode and the metallic terminal member in the axial hole and containing glass and an electrically conductive material. The resistor element has a first resistor layer disposed on the center electrode side and closest to the center electrode and containing titanium oxide, and a second resistor layer disposed on the metallic terminal member side in relation to the first resistor layer and whose titanium oxide content is lower than that of the first resistor layer. The titanium oxide content decreases from the center electrode side toward the metallic terminal member side.

公开(公告)号：US20170331259A1

公开(公告)日：2017-11-16

申请号：US15481543

申请日：2017-04-07

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yuichi YAMADA ,  Yuichi MATSUNAGA

IPC: H01T13/32 ,  H01T13/39 ,  H01T13/41

CPC classification number: H01T13/32 ,  H01T13/20 ,  H01T13/39 ,  H01T13/41 ,  H01T21/02

Abstract: A tip that contains a noble metal is joined to a joining surface of an electrode base material of a ground electrode via a welded portion. On cross-sections of the tip and the electrode base material in a longitudinal direction of the joining surface, the welded portion has a void above the joining surface, and a continuous distance of the welded portion on the joining surface is less than or equal to 0.5 mm, whereby thermal stress due to a difference in thermal expansion between the tip and the electrode base material can be reduced. A total of continuous distances of the welded portions on the joining surface, are 0.4 times to 0.8 times a length from an end of the tip to another end thereof, whereby joining strength of the welded portion can be assured. Peeling at the tip or falling-off of the tip due to thermal stress can be less likely to occur, whereby durability of the ground electrode can be improved.

公开(公告)号：US20170279249A1

公开(公告)日：2017-09-28

申请号：US15461576

申请日：2017-03-17

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Yuichi YAMADA ,  Kenji BAN

IPC: H01T15/00 ,  H01T13/05 ,  F02P13/00

CPC classification number: H01T15/00 ,  F02P13/00 ,  H01T13/05 ,  H01T13/41

Abstract: An ignition system that uses a technique capable of restraining radiation of noise caused by discharge of a spark plug in the ignition system. The ignition system includes a spark plug and a power supply section. The spark plug is attached to an engine head. The power supply section has a battery having a ground terminal, and an ignition coil which transforms a voltage of the battery and supplies a transformed voltage to the spark plug. In the ignition system, a metallic shell of the spark plug is fixed to the engine head while being electrically insulated from the engine head through an insulator an electrically conductive path is connected to the metallic shell, and the electrically conductive path is electrically connected to the ground terminal of the battery while being electrically insulated from the engine head.

公开(公告)号：US20170059512A1

公开(公告)日：2017-03-02

申请号：US15351675

申请日：2016-11-15

Applicant: NGK SPARK PLUG CO., LTD.

Inventor： Daisuke TAHIRA ,  Keiichi NODA ,  Shingo ITO ,  Atsunori OKADA ,  Yuichi YAMADA

IPC: G01N27/407

CPC classification number: G01N27/4074 ,  G01N27/4077 ,  G01N27/4078 ,  G01N27/409 ,  Y10T29/42 ,  Y10T29/49904 ,  Y10T29/49908

Abstract: A method for manufacturing a gas sensor includes: disposing a tubular holder and a tubular compact in a tubular metallic shell defining a through hole, the tubular holder defining a first insertion hole, and the tubular compact defining a second insertion hole; preparing a preliminary assembly in which a pin is inserted into the first insertion hole and the second insertion hole; pulling out the pin from the first insertion hole and the second insertion hole and inserting a sensor element into the first insertion hole and the second insertion hole such that a forward end of the pin will come into contact with an end of the sensor element; compressing the compact to thereby fix the sensor element inside of the metallic shell; welding a protection sleeve to the metallic shell to thereby form a semi-assembly; and combining the semi-assembly with another semi-assembly to thereby form the gas sensor.

Abstract translation: 一种制造气体传感器的方法，包括：将管状保持器和管状紧凑件设置在限定通孔的管状金属外壳中，管状保持件限定第一插入孔，管状紧固件限定第二插入孔; 准备其中销插入到第一插入孔和第二插入孔中的预备组件; 从第一插入孔和第二插入孔拔出销，并将传感器元件插入到第一插入孔和第二插入孔中，使得销的前端将与传感器元件的端部接触; 压缩压块，从而将传感器元件固定在金属外壳内; 将保护套焊接到金属外壳上，从而形成半组件; 并将半组件与另一半组件结合从而形成气体传感器。

公开(公告)号：US20160223505A1

公开(公告)日：2016-08-04

申请号：US15009081

申请日：2016-01-28

Applicant: NGK Spark Plug Co., LTD.

Inventor： Kunihiko YONEZU ,  Takehiro OBA ,  Hisaharu NISHIO ,  Ginjiro ITO ,  Yuichi YAMADA

IPC: G01N33/00 ,  G01M15/10

CPC classification number: G01N33/0009

Abstract: A gas sensor includes a gas sensor element that extends in an axial direction and that includes a detector, which detects a specific gas in a mixed gas; a metal shell that surrounds a periphery of the gas sensor element to hold the gas sensor element; a base that is disposed on a rear side of the metal shell and that covers a rear end portion of the gas sensor element, the base being made of a polymer material; and a metal tube that connects the metal shell and the base to each other and that includes a rear portion and a front portion, the rear portion being integrated with the base, the front portion forming an exposed portion that is exposed from the base. A part of the exposed portion of the tube is connected to the metal shell, and the base is disposed apart from the metal shell.

Abstract translation: 气体传感器包括沿轴向延伸的气体传感器元件，其包括检测混合气体中的特定气体的检测器; 围绕所述气体传感器元件的周边以保持所述气体传感器元件的金属壳; 基部，其设置在所述金属壳的后侧，并且覆盖所述气体传感器元件的后端部，所述基部由聚合物材料制成; 以及金属管，其将所述金属壳和所述基部彼此连接，并且包括后部和前部，所述后部与所述基部一体化，所述前部形成从所述基部露出的暴露部。 管的暴露部分的一部分连接到金属壳，并且基部与金属壳分开设置。