Flame-ejecting spark plug, and internal combustion engine and automobile having same

    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.

    Pre-chamber spark plug
    2.
    发明授权

    公开(公告)号:US10833485B2

    公开(公告)日:2020-11-10

    申请号:US16704008

    申请日:2019-12-05

    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.

    FLAME-EJECTING SPARK PLUG, AND INTERNAL COMBUSTION ENGINE AND AUTOMOBILE HAVING SAME

    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.

    Spark plug
    4.
    发明授权

    公开(公告)号:US10601202B2

    公开(公告)日:2020-03-24

    申请号:US16472275

    申请日:2017-09-05

    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.

    SPARK PLUG
    5.
    发明申请
    SPARK PLUG 审中-公开

    公开(公告)号:US20190334322A1

    公开(公告)日:2019-10-31

    申请号:US16310884

    申请日:2017-05-15

    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.

    IGNITION PLUG AND METHOD FOR MANUFACTURING IGNITION PLUG

    公开(公告)号:US20190044310A1

    公开(公告)日:2019-02-07

    申请号:US16152601

    申请日:2018-10-05

    Inventor: Shunsuke Maki

    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.

    SPARK PLUG FOR INTERNAL COMBUSTION ENGINE
    7.
    发明申请

    公开(公告)号:US20190027902A1

    公开(公告)日:2019-01-24

    申请号:US16037332

    申请日:2018-07-17

    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.

    Spark plug
    8.
    发明授权

    公开(公告)号:US10153620B2

    公开(公告)日:2018-12-11

    申请号:US15565776

    申请日:2016-03-28

    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.

Patent Agency Ranking