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1. 发明申请

US20230062977A1 SPARK PLUG 有权
公开(公告)号：US20230062977A1
公开(公告)日：2023-03-02
申请号：US17789909
申请日：2021-05-21
申请人： NGK SPARK PLUG CO., LTD.
发明人： Daisuke MISHIMA
IPC分类号： H01T13/54 , H01T13/32 , H01T13/02
摘要： This spark plug inhibits excessive increase in the temperature of a ground electrode to inhibit occurrence of pre-ignition. The spark plug includes: an insulator in which an axial hole extending in an axial line direction is formed; a center electrode disposed at a front end in the axial line direction of the axial hole and having a front end portion that protrudes from a front side of the axial hole; a tubular metal shell holding the insulator; and a ground electrode having one end portion that is fixed to a through hole provided in the metal shell, the ground electrode further having another end portion that forms a discharge gap between the other end portion and the front end portion of the center electrode. The through hole extends toward the front side in the axial line direction, in a direction from an outer peripheral surface toward an inner peripheral surface of the metal shell. The one end portion is located on a rear side relative to the other end portion in the axial line direction.

2. 发明授权

US11309689B2 Spark plug and method for manufacturing spark plug 有权
公开(公告)号：US11309689B2
公开(公告)日：2022-04-19
申请号：US17405189
申请日：2021-08-18
申请人： NGK SPARK PLUG CO., LTD.
发明人： Junji Kimura
IPC分类号： H01T13/58 , H01T13/02 , H01T21/02 , B23K26/359
摘要： A spark plug including an insulator and a metallic member such as a metallic shell. In the spark plug, a mark such as a two-dimensional code is provided on the surface of at least one of the insulator and the metallic member. Also, a protective layer covers the mark. The protective layer is optically transparent and contains a fluorescent substance.

3. 发明授权

US10892605B2 Spark plug 有权
公开(公告)号：US10892605B2
公开(公告)日：2021-01-12
申请号：US16703512
申请日：2019-12-04
申请人： Federal-Mogul Ignition GmbH
发明人： Werner Niessner
IPC分类号： H01T13/52 , F02B19/18 , F02B19/12 , H01T13/02 , H01T13/54 , H01T13/34
摘要： A spark plug for generating an axially extending surface spark between a sparking tip of the center electrode and a seal supporting sparking projection located at an internal step portion of the metal shell. In one embodiment, the spark plug is a pre-chamber spark plug having a pre-chamber cap attached to a distal end of the metal shell. The spark plug can allow for unobstructed flame propagation through the pre-chamber, without having the flame obstructed by narrow gaps or a separate ground electrode.

4. 发明授权

US10790638B2 Spark plug for internal combustion engine use and method of manufacturing spark plug 有权
公开(公告)号：US10790638B2
公开(公告)日：2020-09-29
申请号：US16748075
申请日：2020-01-21
申请人： DENSO CORPORATION
发明人： Kazuhide Kawai
IPC分类号： H01T13/02 , H01T21/02
摘要： An outer periphery of the tubular housing includes a parallel surface, a pressure contact surface and a connection surface. The parallel surface is formed parallel to an axial direction of the spark plug. The pressure contact surface is located closer to a tip of the spark plug and more radially inward than the parallel surface. The pressure contact surface has a tapered shape in that a diameter decreases toward the tip. The pressure contact surface is pressed against a cylinder head when installed in the internal combustion engine. The connection surface is located closer to a base of the spark plug than an extension line in a longitudinal cross-section of the spark plug parallel to the axial direction including a plug central axis. The connection surface connects an outer peripheral end of the pressure contact surface with a longitudinal end of the parallel surface.

5. 发明授权

US10742002B1 Spark plug 有权
公开(公告)号：US10742002B1
公开(公告)日：2020-08-11
申请号：US16837495
申请日：2020-04-01
申请人： NGK SPARK PLUG CO., LTD.
发明人： Tatsuya Gozawa , Daiki Goto
IPC分类号： H01T13/02
摘要： A spark plug wherein the occurrence of pre-ignition and misfires in the spark plug are suppressed. The spark plug includes a cover portion, that covers a front end portion of a center electrode and a facing portion of a ground electrode from a front end side of the spark plug to form a pre-chamber space. The cover portion has injection holes that are through-holes. A metal shell volume A (mm3) of a portion of the metal shell on the front side with respect to a rear end of the pre-chamber space and a thermal conductivity B (W/mK) of the metal shell at the normal temperature satisfy a formula (1): 3.6

6. 发明授权

US10734791B2 Pre-chamber spark plug with surface discharge spark gap 有权
公开(公告)号：US10734791B2
公开(公告)日：2020-08-04
申请号：US16703370
申请日：2019-12-04
申请人： Federal-Mogul Ignition GmbH
发明人： Werner Niessner
IPC分类号： H01T13/02 , H01T13/34 , H01T13/52
摘要： A pre-chamber spark plug for an internal combustion engine having a surface discharge spark gap that is generally located at a rearward end of a pre-chamber and is configured so that sparking components will have minimal electrode obstruction and promote unhindered gas exchange between the pre-chamber and a main combustion chamber. According to one embodiment, the surface discharge spark gap includes a radial sparking portion where a majority of the sparking occurs in a generally radial direction. According to another embodiment, the surface discharge spark gap includes both a radial sparking portion and an axial sparking portion so that sparking occurs in both radial and axial directions, respectively.

7. 发明申请

US20200185888A1 PRE-CHAMBER SPARK PLUG WITH SURFACE DISCHARGE SPARK GAP 审中-公开
公开(公告)号：US20200185888A1
公开(公告)日：2020-06-11
申请号：US16703370
申请日：2019-12-04
申请人： Federal-Mogul Ignition GmbH
发明人： Werner Niessner
IPC分类号： H01T13/02 , H01T13/52 , H01T13/34
摘要： A pre-chamber spark plug for an internal combustion engine having a surface discharge spark gap that is generally located at a rearward end of a pre-chamber and is configured so that sparking components will have minimal electrode obstruction and promote unhindered gas exchange between the pre-chamber and a main combustion chamber. According to one embodiment, the surface discharge spark gap includes a radial sparking portion where a majority of the sparking occurs in a generally radial direction. According to another embodiment, the surface discharge spark gap includes both a radial sparking portion and an axial sparking portion so that sparking occurs in both radial and axial directions, respectively.

8. 发明申请

US20190237944A1 SPARK PLUG 审中-公开
公开(公告)号：US20190237944A1
公开(公告)日：2019-08-01
申请号：US16341121
申请日：2017-07-10
申请人： NGK SPARK PLUG CO., LTD.
发明人： Taku KATO , Yohei KOZAKAI
IPC分类号： H01T13/39 , C22C38/04 , B23K35/30 , H01T13/02
CPC分类号： H01T13/39 , B23K35/3053 , C22C38/00 , C22C38/04 , H01T13/02 , H01T13/20
摘要： An ignition plug includes a metallic shell containing iron as a main component, carbon in an amount of 0.20 wt. % to 0.30 wt. %, manganese in an amount of 0.30 wt. % to 0.45 wt. %, and sulfur in an amount of 0.005 wt. % to 0.009 wt. %. The ratio of the manganese content (wt. %) to the sulfur content (wt. %); i.e., Mn/S is 40 to 65.

9. 发明授权

US09903337B2 Plasma generator and internal combustion engine 有权
公开(公告)号：US09903337B2
公开(公告)日：2018-02-27
申请号：US14915761
申请日：2014-09-02
申请人： IMAGINEERING, INC.
发明人： Yuji Ikeda
IPC分类号： F02P23/04 , H05H1/46 , H05H1/52 , F02P3/02 , H01T13/02 , H01T13/04 , F02P3/04
CPC分类号： F02P23/045 , F02P3/02 , F02P3/0435 , F02P9/007 , F02P23/04 , H01T13/02 , H01T13/04 , H05H1/46 , H05H1/52 , H05H2001/4607 , H05H2001/463 , H05H2001/4682
摘要： Plasma generator has an ignition coil for supplying a discharge voltage, an electromagnetic wave oscillator that generates electromagnetic waves, a mixer that mixes energy for discharge with electromagnetic wave energy, and an ignition plug that causes a discharge and introduces the electromagnetic wave energy to a reaction region. The discharge and electromagnetic wave energy are used together in the reaction region, wherein a combustion reaction or plasma reaction is carried out, triggering a combustion reaction or plasma reaction. Part of a member that constitutes the ignition plug is used as part of a member that forms the mixer.

10. 发明申请

US20170037827A1 CONTROL DEVICE OF PLASMA IGNITION APPARATUS AND PLASMA IGNITION APPARATUS 有权
标题翻译：等离子体点火装置和等离子体点火装置的控制装置
公开(公告)号：US20170037827A1
公开(公告)日：2017-02-09
申请号：US15203911
申请日：2016-07-07
申请人： FUJITSU TEN LIMITED
发明人： Shoko YAMOTO , Akio OKAHARA , Yusuke MASUDA
IPC分类号： F02P23/04 , F02P3/01 , H01T13/02
CPC分类号： F02P23/04 , F02P3/01 , F02P9/007 , F02P13/00 , H01T13/02 , H01T13/04 , H01T13/06 , H01T13/40 , H01T15/00
摘要： A control device of a plasma ignition apparatus according to an embodiment includes a plug socket, an oscillation unit, and an amplification unit. The plug socket holds an ignition plug, and a high voltage generated by an ignition coil is transmitted to the ignition plug through the plug socket. The oscillation unit oscillates a high frequency. The amplification unit amplifies the high frequency oscillated by the oscillation unit. The oscillation unit is arranged outside of the plug socket and the amplification unit is arranged inside of the plug socket.
摘要翻译：根据实施例的等离子体点火装置的控制装置包括插头插座，振荡单元和放大单元。插头插座保持火花塞，并且由点火线圈产生的高电压通过插头插座传递到火花塞。振荡单元振荡高频。放大单元放大由振荡单元振荡的高频。振荡单元布置在插头插座的外侧，放大单元布置在插头插座的内部。

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