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1. 发明授权

US12062888B2 Spark plug 有权
公开(公告)号：US12062888B2
公开(公告)日：2024-08-13
申请号：US18404294
申请日：2024-01-04
申请人： Niterra Co., Ltd.
发明人： Tomokazu Banno , Mayu Fujisawa
IPC分类号： H01T13/20 , H01T13/02 , H01T13/32 , H01T13/39
CPC分类号： H01T13/32 , H01T13/39
摘要： A spark plug includes a base member containing a first component in the largest amount, a tip, and a fusion zone which is in contact with the tip and the base member and contains the first component and a second component. The ratio of the first component content of the fusion zone to the first component content of the base member is less than 0.93. The length of a portion of the tip surrounded by the fusion zone is 0.4 times or more of the distance between the discharge surface of the tip and the interface between the tip and the fusion zone.

2. 发明授权

US11990731B2 Spark plug electrode and method of manufacturing same 有权
公开(公告)号：US11990731B2
公开(公告)日：2024-05-21
申请号：US17603128
申请日：2020-04-29
申请人： Federal-Mogul Ignition LLC
发明人： David L. Francis , Scott J. Myers , Joshua S. Farley
IPC分类号： H01T13/32 , H01T13/16 , H01T13/39 , H01T21/02
CPC分类号： H01T13/32 , H01T13/16 , H01T13/39 , H01T21/02
摘要： A spark plug electrode includes a thermally conductive core portion and a weldable core portion that are aligned in series within a multi-piece core assembly to improve the heat management and attachment characteristics of the electrode. The thermally conductive core portion, which can be made from a copper-based material, is located towards a firing end of the ground electrode. The weldable core portion can be made from a nickel-based material and is located towards a welding end of the ground electrode. A method of manufacturing is also described for extruding and forming the spark plug electrode with the multi-piece core assembly. The method is designed so that a core interface between the thermally conductive core portion and the weldable core portion does not substantially include any internal voids, and a welding surface where the electrode is attached to a spark plug shell has a nickel-to-nickel interface, but does not substantially include any copper.

3. 发明公开

US20240047949A1 SPARK PLUG, SPARK PLUG ELECTRODE, AND METHOD OF MANUFACTURING THE SAME 审中-公开
公开(公告)号：US20240047949A1
公开(公告)日：2024-02-08
申请号：US18382746
申请日：2023-10-23
申请人： FEDERAL-MOGUL IGNITION GMBH
发明人： Daniel Koenig
IPC分类号： H01T13/46 , H01T13/32 , H01T13/39 , H01T21/02
CPC分类号： H01T13/462 , H01T13/32 , H01T13/39 , H01T21/02
摘要： A spark plug electrode with one or more electrode tip(s) formed on one or more electrode base(s) using an additive manufacturing process, such as a powder bed fusion technique, such that each electrode tip overhangs an edge of a corresponding electrode base. The spark plug electrode may be a center electrode, a ground electrode, or an annular ground electrode and can be provided according to a number of different configurations. Each electrode tip includes a precious metal-based material, such as an iridium- or platinum-based alloy, and a plurality of laser deposition layers, and each electrode tip can be secured to an electrode base with a weldless joint. An additive manufacturing process is also provided.

4. 发明授权

US11757261B2 Ground electrode for spark plug and spark plug 有权
公开(公告)号：US11757261B2
公开(公告)日：2023-09-12
申请号：US17980033
申请日：2022-11-03
申请人： DENSO CORPORATION
发明人： Yuji Kaji , Nobuo Abe , Naoto Hayashi
IPC分类号： H01T13/32 , H01T13/34 , H01T13/08 , H01T13/39
CPC分类号： H01T13/39 , H01T13/32
摘要： A ground electrode for a spark plug includes a ground electrode body arranged to face a center electrode of the spark plug. The ground electrode includes a discharge portion mounted on the ground electrode body to face the center electrode with a spark gap between the discharge portion and the center electrode. The discharge portion is made of a platinum-based alloy of platinum, rhodium, and nickel. A first mass percent of the rhodium contained in the platinum-based alloy of the platinum, the rhodium, and the nickel is within a first range from 2 wt % to 20 wt % inclusive. A second mass percent of the nickel contained in the platinum-based alloy of the platinum, the rhodium, and the nickel being within a second range from 2.5 wt % to 12 wt % inclusive.

5. 发明授权

US11616346B2 Spark plug 有权
公开(公告)号：US11616346B2
公开(公告)日：2023-03-28
申请号：US17792599
申请日：2021-08-19
申请人： NGK SPARK PLUG CO., LTD.
发明人： Kazuki Ito , Hiroaki Izawa , Kengo Hattori
IPC分类号： H01T13/39 , C22C5/04 , H01T13/32
摘要： A spark plug having a center electrode that includes a columnar noble metal tip at one end thereof, and a ground electrode that forms a spark gap between the ground electrode and a circular discharge surface of the tip. In the tip, a mass % of Pt is largest and a content percentage of Ni is more than or equal to 0 mass % and less than or equal to 40 mass %. In each of both a cross-section of the tip parallel to the discharge surface and a cross-section of the tip perpendicular to the discharge surface, particles each having an aspect ratio of more than or equal to 1 and less than or equal to 10 occupy more than or equal to 70% of observed particles in an area extending from an outline of the cross-section by a distance of 10% of a diameter of the discharge surface.

6. 发明申请

US20230086672A1 COMBUSTOR 有权
公开(公告)号：US20230086672A1
公开(公告)日：2023-03-23
申请号：US17794650
申请日：2021-01-13
申请人： KABUSHIKI KAISHA TOYOTA JIDOSHOKKI , OSAKA UNIVERSITY
发明人： Hiroyasu KAWAUCHI , Hideaki SUZUKI , Yoshitaka TAKEUCHI , Ryuichi MURAI , Fumiteru AKAMATSU , Yu IMAHASHI
IPC分类号： F23D14/02 , F23D14/24 , F23Q3/00 , H01T13/32
摘要： A combustor includes: a housing having an annular shape of which one end side is open and of which the other end side is closed; at least one introduction portion that introduces a fuel and an oxidizing gas into the housing to generate a tubular flow; and an ignition unit that ignites the fuel introduced into the housing. The ignition unit includes a discharge electrode and a ground electrode. A space that the fuel and the oxidizing gas reach is provided between the discharge electrode and the ground electrode.

7. 发明申请

US20220416514A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE 有权
公开(公告)号：US20220416514A1
公开(公告)日：2022-12-29
申请号：US17901003
申请日：2022-09-01
申请人： DENSO CORPORATION
发明人： Daisuke SHIMAMOTO
IPC分类号： H01T13/32 , H01T13/54 , H01T13/38
摘要： A spark plug for an internal combustion engine includes a housing, an insulator, a center electrode, a ground electrode, and an auxiliary chamber forming portion. The ground electrode faces the center electrode from an outer peripheral side and forms a discharge gap between the ground electrode and the center electrode. An auxiliary chamber is formed inside the auxiliary chamber forming portion. A distance in an axial direction between the discharge gap and a distal end of the auxiliary chamber is equal to or greater than a maximum wall thickness of the auxiliary chamber forming portion. The auxiliary chamber forming portion includes injection holes. The injection holes are formed in a state where openings on an outer side are located closer to a distal end than openings on the auxiliary chamber side. At least one of the injection holes is an injection hole in the axial direction formed along an axial direction of a plug. When viewed in the axial direction of the spark plug, a center of the axial injection hole is eccentric from a central axis of the spark plug toward the discharge gap.

8. 发明授权

US11522345B2 Internal combustion engine having dedicated EGR cylinder(s) and air-assisted spark ignition 有权
公开(公告)号：US11522345B2
公开(公告)日：2022-12-06
申请号：US17234376
申请日：2021-04-19
申请人： Southwest Research Institute
发明人： Graham T Conway , Barrett Mangold , Yanyu Wang
IPC分类号： F02M35/10 , H01T13/32 , F02B19/12 , F02M26/17 , F02M26/14
摘要： A method of assisting ignition of a dedicated exhaust gas recirculation (D-EGR) cylinder in a spark-ignited internal combustion engine. The spark igniter has an internal air passage that receives pressurized air and carries the pressurized air down to an exit port in the vicinity of the spark gap of the igniter.

9. 发明授权

US11515690B2 Spark plug 有权
公开(公告)号：US11515690B2
公开(公告)日：2022-11-29
申请号：US17292898
申请日：2020-04-27
申请人： NGK SPARK PLUG CO., LTD.
发明人： Kenji Ban , Tatsuya Gozawa
IPC分类号： H01T13/54 , H01T13/32
摘要： A spark plug capable of generating a sufficient volume of jet with an increased range is provided. The spark plug includes a metal shell having a tubular shape; a center electrode retained in the metal shell in an insulated manner; a ground electrode that is electrically connected to the metal shell and that defines a spark gap between the center electrode and an end portion of the ground electrode; and a cap portion that covers the center electrode and the end portion of the ground electrode from the front in a region in front of the metal shell and in which a through hole is formed. The cap portion includes a plurality of projections on an inner surface of the through hole. The projections extend in an extending direction in which the through hole extends.

10. 发明申请

US20220360051A1 SPARK PLUG 有权
公开(公告)号：US20220360051A1
公开(公告)日：2022-11-10
申请号：US17425522
申请日：2020-11-19
申请人： NGK SPARK PLUG CO., LTD.
发明人： Kenji BAN , Tatsuya GOZAWA
IPC分类号： H01T13/08 , H01T13/32 , H01T13/34
摘要： A spark plug includes a center electrode, a tubular metallic shell which holds the center electrode therein in an insulated state, and a ground electrode which faces a forward end portion of the center electrode. The metallic shell has a penetration hole which penetrates the metallic shell in a direction intersecting an axial direction. The ground electrode has a press-fitted portion inserted into the penetration hole and fixed to the metallic shell, a projecting portion projecting toward an inner side of the metallic shell, and an insertion portion disposed between the press-fitted portion and the projecting portion, inserted into the penetration hole, and forming a space between the insertion portion and an inner surface of the penetration hole. An angle α formed between the inner surface of the penetration hole and an outer surface of the insertion portion falls within a range of 0°

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