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公开(公告)号：US10886706B2
公开(公告)日：2021-01-05
申请号：US16609193
申请日：2017-07-13
Inventor： Xiangjin Zhou
Abstract: Disclosed are a flame-ejecting spark plug, and an internal combustion engine and an automobile having same. On the basis of a conventional spark plug, a space near to an electrode is closed to form a cavity (10), an end face is provided with at least one first hole (11), and a side face is provided with at least one second hole (13). A mixture of air and fuel enters the cavity (10) through the first hole (11) and the second hole (13). Electric discharge between the electrodes produces a spark igniting the combustible gas within the cavity (10), and the flame extends in the cavity (10) and the temperature and pressure rise. The flame is ejected from the first hole (11) and the second hole (13) to form a plurality of columnar flames, and the flame penetrates the combustible gas in a combustion chamber and a cylinder to realize stereoscopic ignition, large-area ignition and high-energy ignition of the combustible gas in the combustion chamber.
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公开(公告)号：US10833485B2
公开(公告)日：2020-11-10
申请号：US16704008
申请日：2019-12-05
Applicant: Federal-Mogul Ignition GmbH
Inventor： Werner Niessner , Peter Janas , Alexander Ott
Abstract: A pre-chamber spark plug having a shell, an insulator disposed at least partially within the shell, a center electrode disposed at least partially within the insulator, a ground electrode forming a spark gap with the center electrode, and a pre-chamber cap connected to the shell and forming a pre-chamber. The pre-chamber cap includes two or more openings that are configured so that at least one inflowing fuel-air mixture jet is directed to a pre-chamber wall gap so as to flush out or remove gas from a previous ignition cycle. The two or more openings are angled so that a first inflowing fuel-air mixture jet of a first opening does not intersect with a second inflowing fuel air-mixture jet of a second opening.
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公开(公告)号：US20200220336A1
公开(公告)日：2020-07-09
申请号：US16609193
申请日：2017-07-13
Applicant: Xiangin ZHOU
Inventor： Xiangjin ZHOU
Abstract: Disclosed are a flame-ejecting spark plug, and an internal combustion engine and an automobile having same. On the basis of a conventional spark plug, a space near to an electrode is closed to form a cavity (10), an end face is provided with at least one first hole (11), and a side face is provided with at least one second hole (13). A mixture of air and fuel enters the cavity (10) through the first hole (11) and the second hole (13). Electric discharge between the electrodes produces a spark igniting the combustible gas within the cavity (10), and the flame extends in the cavity (10) and the temperature and pressure rise. The flame is ejected from the first hole (11) and the second hole (13) to form a plurality of columnar flames, and the flame penetrates the combustible gas in a combustion chamber and a cylinder to realize stereoscopic ignition, large-area ignition and high-energy ignition of the combustible gas in the combustion chamber.
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公开(公告)号：US10601202B2
公开(公告)日：2020-03-24
申请号：US16472275
申请日：2017-09-05
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Kengo Fujimura , Kimihiro Nishizono , Hiroki Ota
Abstract: A spark plug enabling suppression of reduction in the strength of an insulator. In the spark plug, a rear end portion of an engagement portion formed on an outer peripheral surface of a tubular insulator extending along an axial line from a front side to a rear side, is engaged with a to-be-engaged portion of a tubular metal shell disposed on the outer peripheral surface of the insulator. The insulator is made from ceramic such as alumina. On at least a part of the outer peripheral surface of the insulator, a projected and recessed portion is formed on the front side relative to the engagement portion so as to helically extend in a circumferential direction of the insulator.
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公开(公告)号：US20190334322A1
公开(公告)日：2019-10-31
申请号：US16310884
申请日：2017-05-15
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Ryouki YAGI , Masahiro INOUE
Abstract: Disclosed is a spark plug in which a first electrode has a tip joined to an electrode base through a fusion zone. In a cross section of the first electrode taken along a center axis, an interface of the fusion zone and a tip includes a first region, a second region and a base point present on at least one side of the cross section. The base point is a point connection of the first and second regions and is located farthest away from the imaginary straight line in the direction parallel to the center axis. The base point is positioned so as to satisfy a condition of 0.1≤X/W≤0.4 where W is a length of the interface in a direction perpendicular to the center axis; and X is a distance between the base point and the center axis.
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Patent Agency Ranking
公开(公告)号：US20190044310A1
公开(公告)日：2019-02-07
申请号：US16152601
申请日：2018-10-05
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Shunsuke Maki
IPC: H01T21/02 , H01T13/02 , G06K19/06 , B23K26/40 , B23K26/352
Abstract: An ignition plug such as a spark plug or a glow plug configured to ignite an air-fuel mixture in an internal combustion engine includes a mark that is formed of an oxide film generated on the surface of a metal member or is formed of the metal member and the oxide film. The mark is formed by promoting formation of the oxide film on the surface of the metal member or removing the oxide film through radiation of a laser beam onto the surface of the metal member.
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公开(公告)号：US20190027902A1
公开(公告)日：2019-01-24
申请号：US16037332
申请日：2018-07-17
Applicant: DENSO CORPORATION
Inventor： Shohei ISHIDA , Noriaki NISHIO , Shun SUGITA , Yuya ABE
CPC classification number: H01T13/32 , H01T13/02 , H01T13/467
Abstract: A spark plug includes a main ground electrode having a main connecting portion connected to the housing and forming a discharge gap between the main ground electrode and the center electrode, and a sub ground electrode having a sub connecting portion connected to the housing. The direction on which the main connecting portion and a plug center axis are arranged is set to be perpendicular to an air flow direction of an air stream in the combustion chamber. The sub connecting portion is located in a downstream side than the main connecting portion. The tip end position of the sub ground electrode in the plug axial direction is located in farther tip end side than that of the main ground electrode is. The sub ground electrode is configured such that an end point of the discharge spark is movable on the sub ground electrode.
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公开(公告)号：US10153620B2
公开(公告)日：2018-12-11
申请号：US15565776
申请日：2016-03-28
Applicant: NGK SPARK PLUG CO., LTD.
Inventor： Kentaro Kiuchi , Kazuhiko Mori , Hironobu Mizutani , Yuusuke Teranishi
Abstract: A spark plug having a ceramic insulator held by a crimp portion of a metallic shell. The crimp portion satisfies a relation of A≥1.7 mm and a relation of t≥1.20 mm in a cross section of the crimp portion taken along a plane containing the axial line, where A is the distance between a closest point which is a point within the cross section closest to the ceramic insulator and an intersection at which a first orthogonal line passing through the closest point and orthogonal to the axial line intersects with an outer circumference of the crimp portion, and t is a thickness of the proximal end of the crimp portion.
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公开(公告)号：US09810192B1
公开(公告)日：2017-11-07
申请号：US15097442
申请日：2016-04-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Cherian A. Idicheria , Paul M. Najt
CPC classification number: F02P17/12 , F02D41/0047 , F02D41/30 , F02M27/042 , F02P9/007 , F02P11/00 , F02P23/00 , F02P23/04 , H01T13/02 , H01T13/52
Abstract: An internal combustion engine is described and includes a combustion chamber formed by cooperation of a cylinder bore formed in a cylinder block, a cylinder head and a piston. A plasma ignition controller is electrically connected to a groundless barrier discharge plasma igniter that includes a tip portion disposed to protrude into the combustion chamber. A current sensor is disposed to monitor secondary current flow between the plasma ignition controller and the groundless barrier discharge plasma igniter. The plasma ignition controller is disposed to execute a plasma discharge event. A controller is disposed to monitor a magnitude of the secondary current flow via the current sensor during the plasma discharge event. The controller includes an instruction set executable to evaluate integrity of the groundless barrier discharge plasma igniter based upon the magnitude of the secondary current flow during the plasma discharge event.
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公开(公告)号：US20170298894A1
公开(公告)日：2017-10-19
申请号：US15097442
申请日：2016-04-13
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Cherian A. Idicheria , Paul M. Najt
CPC classification number: F02P17/12 , F02D41/0047 , F02D41/30 , F02M27/042 , F02P9/007 , F02P11/00 , F02P23/00 , F02P23/04 , H01T13/02 , H01T13/52
Abstract: An internal combustion engine is described and includes a combustion chamber formed by cooperation of a cylinder bore formed in a cylinder block, a cylinder head and a piston. A plasma ignition controller is electrically connected to a groundless barrier discharge plasma igniter that includes a tip portion disposed to protrude into the combustion chamber. A current sensor is disposed to monitor secondary current flow between the plasma ignition controller and the groundless barrier discharge plasma igniter. The plasma ignition controller is disposed to execute a plasma discharge event. A controller is disposed to monitor a magnitude of the secondary current flow via the current sensor during the plasma discharge event. The controller includes an instruction set executable to evaluate integrity of the groundless barrier discharge plasma igniter based upon the magnitude of the secondary current flow during the plasma discharge event.
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