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公开(公告)号：US09970910B2
公开(公告)日：2018-05-15
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
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.
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公开(公告)号：US09742157B2
公开(公告)日：2017-08-22
申请号：US15025609
申请日：2014-08-20
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Shinya Mitsuda , Yuichi Yamada
Abstract: A spark plug includes an insulator having a through hole formed in the direction of an axis, a rod-shaped center electrode inserted in the through hole and extending in the direction of the axis, a metal shell disposed around an outer circumference of the insulator, and a ground electrode electrically conducted with the metal shell and adapted to define a gap between the ground electrode and the center electrode. A front end part of the insulator has a front end surface, an outer circumferential surface and a curved surface region formed between the front end surface and the outer circumferential surface. In a cross section including the axis, a front end of an inner circumferential surface of the metal shell faces the curved surface region in a direction perpendicular to the axis. The curved surface region has a curvature radius of 0.2 mm to 0.8 mm.
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公开(公告)号：US09354142B2
公开(公告)日：2016-05-31
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: G01N1/00 , G01M15/10 , 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。
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公开(公告)号：US09124074B2
公开(公告)日：2015-09-01
申请号：US14419680
申请日：2013-04-10
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Hiroaki Kuki , Tomoaki Ueda , Yuichi Yamada
IPC: H01T13/20
Abstract: A spark plug includes an insulator and a metal shell arranged around the insulator and having a thread portion formed with a thread diameter of M12. The insulator has an engagement portion held on a step portion of the metal shell via a plate packing and a leg portion located to leave a clearance between the leg portion and an inner circumferential surface of the metal shell. Assuming that: L (mm) is a distance from a front end of the plate packing toward the front; and A (mm) is a size of the clearance, a site of the clearance where the size A becomes 0.5 mm or smaller is located at or rear of a position of 2.0 mm from the front end toward the front; and a relationship of A≧L×0.2+0.2 (mm) is satisfied within a range of 3.0≦L≦4.0.
Abstract translation: 火花塞包括绝缘体和围绕绝缘体布置的金属壳，并且具有形成有螺纹直径M12的螺纹部分。 绝缘体具有通过板状密封件固定在金属壳的台阶部分上的接合部分和位于腿部与金属壳体的内周面之间留出间隙的腿部。 假设：L（mm）是从板状填料的前端向前方的距离; A（mm）为间隙的尺寸，尺寸A变为0.5mm以下的间隙的位置位于从前端朝向前方2.0mm的位置的后方， 在3.0＆amp; NlE; L＆nlE; 4.0的范围内满足A≥L×0.2 + 0.2（mm）的关系。
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公开(公告)号：US10250016B2
公开(公告)日：2019-04-02
申请号：US15461576
申请日：2017-03-17
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Yuichi Yamada , Kenji Ban
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.
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Patent Agency Ranking
公开(公告)号：US10067106B2
公开(公告)日：2018-09-04
申请号：US14991017
申请日：2016-01-08
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Kunihiko Yonezu , Takehiro Oba , Hisaharu Nishio , Ginjiro Ito , Yuichi Yamada
Abstract: A sensor includes a detector element, a connection terminal, and a separator. The contacting portion is in contact with a conductive member so as to overlap the conductive member in a thickness direction, which is a direction of thickness of the detector element between the principal surfaces. The separator includes an element accommodation space that accommodates a portion of an element contact portion and an element back portion, and a partition wall that separates the element accommodation space from a terminal accommodation space that accommodates the contacting portion and a portion of the conductive member and that is adjacent to the element accommodation space in the thickness direction. A frame main body is disposed in an element-side region, which is a region on an element-accommodation-space side in the thickness direction in a region obtained by extending the terminal accommodation space toward the front side in the axial direction.
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公开(公告)号：US09958413B2
公开(公告)日：2018-05-01
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 , 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 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.
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公开(公告)号：US09957873B2
公开(公告)日：2018-05-01
申请号：US14990947
申请日：2016-01-08
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Kunihiko Yonezu , Takehiro Oba , Hisaharu Nishio , Ginjiro Ito , Yuichi Yamada
IPC: G01N27/407 , F01N11/00 , G01N27/406 , F02M35/10 , F02M57/00
CPC classification number: F01N11/007 , F02M35/10373 , F02M57/005 , G01N27/406 , G01N27/4062 , G01N27/4078
Abstract: A sensor includes a detector element including a detecting portion and an element back portion on which two or more electrical connection terminal portions are formed; two or more connection terminals which each include an oblong frame main body that extends in an axial direction and an element contact portion that is electrically connected to a corresponding one of the electrical connection terminal portions; a separator that accommodates the connection terminals and the element back portion; and a base that surrounds an outer periphery of the separator. The separator includes a partition wall that is made of a resin material and partitions a plurality of accommodation spaces from each other. The accommodation spaces include an element accommodation space that accommodates portions of the element contact portions and the element back portion, and a plurality of terminal accommodation spaces which each accommodate one of the two or more frame main bodies.
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公开(公告)号：US09482637B2
公开(公告)日：2016-11-01
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
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。
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公开(公告)号：US10522978B2
公开(公告)日：2019-12-31
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
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.
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