Pre-chamber spark plug with improved heating behavior

    公开(公告)号:US12113335B2

    公开(公告)日:2024-10-08

    申请号:US18547442

    申请日:2021-12-28

    申请人: Robert Bosch GmbH

    IPC分类号: H01T13/18 H01T13/06

    CPC分类号: H01T13/18 H01T13/06

    摘要: A pre-chamber spark plug. The pre-chamber spark plug includes a housing, a pre-chamber, a cap that closes the pre-chamber on the housing and that has one or more through-openings, and an ignition device situated in the pre-chamber. The cap has a cap base and a cap jacket. The cap jacket and a housing inner wall of the housing defines a pre-chamber inner wall. The pre-chamber is defined by the pre-chamber inner wall and the cap base. At least one rib projects into the pre-chamber is formed in the region of the pre-chamber inner wall.

    Discharge device
    4.
    发明授权

    公开(公告)号:US12109341B2

    公开(公告)日:2024-10-08

    申请号:US17975574

    申请日:2022-10-27

    IPC分类号: A61L9/22 B03C3/82 H01T23/00

    CPC分类号: A61L9/22 B03C3/82 H01T23/00

    摘要: A discharge device is housed in a housing portion of a holder. The discharge device includes a housed section and a discharge electrode protruding from the housed section. The housed section is housed in the housing portion. The housed section includes a bottom wall and two side walls. The two side walls oppose each other in a longitudinal direction of the bottom wall. At least one of the two side walls is connected to the bottom wall via a curved surface. The curved surface guides a corner of the housing portion when the housed section is housed in the housing portion. As a result, the housed section is housed in the housing portion without catching on the corner.

    SPARK PLUG
    5.
    发明公开
    SPARK PLUG 审中-公开

    公开(公告)号:US20240332917A1

    公开(公告)日:2024-10-03

    申请号:US18619553

    申请日:2024-03-28

    申请人: Niterra Co., Ltd.

    发明人: Naoki SADAKA

    IPC分类号: H01T13/34 H01T13/39

    CPC分类号: H01T13/34 H01T13/39

    摘要: A spark plug includes a center electrode extending along an axial line and includes a front end portion projecting from an insulator, in a section including the axial line, the front end portion includes a proximal end positioned at a front end of the insulator and an electrode tip end. At least one outline appearing in the section and connecting the proximal end and the electrode tip end of the front end portion to each other includes one or more recessed portions recessed toward the axial line, and a value R/A obtained by dividing a curvature radius R of a rear-end recessed portion, of the one or more recessed portions, closest to the proximal end by a distance A between the rear-end recessed portion and the electrode tip end in the direction of the axial line is more than or equal to 0.12.

    IGNITER
    6.
    发明公开
    IGNITER 审中-公开

    公开(公告)号:US20240332915A1

    公开(公告)日:2024-10-03

    申请号:US18191181

    申请日:2023-03-28

    发明人: Sarmad KHAN

    IPC分类号: H01T13/22 F02C7/266

    CPC分类号: H01T13/22 F02C7/266

    摘要: The igniter can have a first conductor having a tip extending along an axis and forming a positive terminal; a second conductor having a tip surrounding the tip of the first conductor around the axis and forming a negative terminal; an insulator filling a space between the first conductor and the second conductor, a spark path extending radially, relative the axis, between the tip of the first conductor and the tip of the second conductor, from the positive terminal to the negative terminal; at least one magnet operable to generate a magnetic field B, the magnetic field B having a magnetic field orientation extending circumferentially around the axis, the at least one magnet disposed radially, relative the axis, between the first conductor and the second conductor, the at least one magnet embedded within the insulator.

    PRINTED CIRCUIT SPARK GAP WITH ENHANCED SPARK OVER VOLTAGE TO PROTECT AN ELECTRONIC DEVICE CONNECTED TO THE SPARK GAP

    公开(公告)号:US20240332914A1

    公开(公告)日:2024-10-03

    申请号:US18622607

    申请日:2024-03-29

    IPC分类号: H01T4/02

    CPC分类号: H01T4/02

    摘要: A spark gap is configured to provide an enhanced spark over voltage. The spark gap includes a non-smooth textured substrate surface, a first conducting electrode, a second conducting electrode, a gap configured to be disposed between the first and second conducting electrodes, and a conductive material configured to be disposed in a non-continuous and irregular manner on the non-smooth textured substrate surface and in the gap between the first and second conducting electrodes, wherein the spark gap is structurally configured to provide an enhanced spark over voltage to protect any device connected to the spark gap.

    SPARK PLUG
    9.
    发明公开
    SPARK PLUG 审中-公开

    公开(公告)号:US20240305069A1

    公开(公告)日:2024-09-12

    申请号:US18273092

    申请日:2022-06-08

    申请人: Niterra Co., Ltd.

    IPC分类号: H01T13/08 H01T13/32

    CPC分类号: H01T13/08 H01T13/32

    摘要: A spark plug includes a metallic shell member having a tubular portion extending along an axial line of the metallic shell, a center electrode disposed inside the tubular portion and extending along the axial line, and a ground electrode which is inserted into an opening 5 provided in the tubular portion and forms a gap between the center electrode and a forward end portion of the round electrode in a direction in which the round electrode extends. A screw thread is provided on an outer circumferential surface of the tubular portion. The opening has a sloping portion which tapers from the outer circumferential surface of the tubular portion toward an inner circumferential surface side. An angle formed between the 10 sloping portion of the opening and a tangent line to the outer circumferential surface is 90 degrees or greater.