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公开(公告)号：US11183818B2
公开(公告)日：2021-11-23
申请号：US15935408
申请日：2018-03-26
摘要： A prechamber spark plug for an internal combustion engine with the following features: a body with an external thread at its front end for screwing the spark plug into the engine; the external thread has a center line and begins with a thread start at the front end; the body has a passage in which an insulator is fastened and a center electrode protrudes from the front end of this insulator; at the front end of the body, a prechamber-forming cap is provided, which delimits a prechamber and shields the center electrode from a combustion chamber of the engine after the spark plug has been installed in the engine; the cap has at least one opening, which has a predefined orientation in relation to the thread start and is oriented obliquely to the center line of the external thread so as to permit a gas exchange between the prechamber and the space outside the prechamber.
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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
发明人： Werner Niessner , Peter Janas , Alexander Ott
摘要： 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：US10651631B2
公开(公告)日：2020-05-12
申请号：US16507631
申请日：2019-07-10
发明人： Malik Merke , John Burrows
IPC分类号： H01T13/36
摘要： A spark plug is specified, having a metal shell with an axial bore and a threaded section, having an insulator with an axial bore that is located at least partially inside the axial bore of the metal shell; a center electrode that is accommodated at least partially inside the axial bore of the insulator; a ground electrode that is held by the metal shell, wherein an end region of the ground electrode forms, together with the center electrode, an ignition gap, and having a sealing ring that extends at least between an outside shoulder of the insulator and an inside shoulder of the metal shell, wherein the sealing ring has polyaryl ether ketone (PAEK), preferably polyether ether ketone (PEEK).
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公开(公告)号：US10020640B2
公开(公告)日：2018-07-10
申请号：US15233668
申请日：2016-08-10
发明人： Werner Niessner , Alexander Schenk
摘要： A spark plug having a center conductor, an insulator surrounding the center conductor, at least two electrodes forming a spark gap, and a spark plug body surrounding the insulator and having an external thread arranged at the front end of the spark plug for screwing in to an internal combustion engine. A component that is attached to the front end of the spark plug and comes into contact with fuel during operation is formed as a sintered powder injection molded part, referred to as a MIM component.
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公开(公告)号：US09948066B2
公开(公告)日：2018-04-17
申请号：US15199294
申请日：2016-06-30
发明人： Werner Niessner
CPC分类号： H01T13/32 , H01T13/467
摘要： A spark plug having a center conductor, an insulator surrounding the center conductor, a body surrounding the insulator, and a center electrode connected in an electrically conductive manner to the center conductor, wherein the center electrode delimits a spark gap with its front face. The spark plug has two bar-shaped ground electrodes that are connected in an electrically conductive manner to the body, that delimit the spark gap, and that are adjacent to one another and spaced apart from one another in the region of the spark gap.
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公开(公告)号：US10910797B2
公开(公告)日：2021-02-02
申请号：US16690703
申请日：2019-11-21
发明人： Werner Niessner , Andreas Zeh
摘要： An insulator arrangement for a spark plug arrangement, in particular for a prechamber spark plug, with an elongated body that has an insulator arrangement longitudinal bore for accommodating a center electrode arrangement and has a front end. A sealing shoulder is formed on an outer circumferential section of the body. An axial transition section is formed between the sealing shoulder and the front end of the body. The front end of the body is designed such that at least 50% of a gas flow impinging thereon in a first direction is deflected in a direction opposite to the first direction.
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公开(公告)号：US10892605B2
公开(公告)日：2021-01-12
申请号：US16703512
申请日：2019-12-04
发明人： Werner Niessner
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.
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公开(公告)号：US10734791B2
公开(公告)日：2020-08-04
申请号：US16703370
申请日：2019-12-04
发明人： Werner Niessner
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.
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公开(公告)号：US10598130B2
公开(公告)日：2020-03-24
申请号：US16211665
申请日：2018-12-06
IPC分类号： F02M21/00 , F02M21/02 , H01T13/54 , H01T13/32 , F02B19/10 , F02B19/12 , F02M57/06 , H01T13/40 , H01T13/08
摘要： A system composed of a water sleeve and a spark plug for an internal combustion engine. The spark plug has a supply passage, a center conductor, an insulator surrounding the center conductor, and a metallic body surrounding the insulator. A center electrode and at least one ground electrode form a spark air gap. In the region of its front end, the spark plug has an external thread for screwing the spark plug into a component of the internal combustion engine and has at least one discharge opening of the supply passage. The spark plug, at its front end, has, attached to the body, a sleeve that contains the external thread; the body has, on its outside, at least one groove that forms a section of the supply passage; and the sleeve has a heat conducting section that contains at least a part of the external thread and that is in contact with the body and covers at least portions of the groove.
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公开(公告)号：US09667037B2
公开(公告)日：2017-05-30
申请号：US15278577
申请日：2016-09-28
摘要： A prechamber spark plug for a gas-powered internal combustion engine having: a metallic body, an insulator, a center conductor connected to a center electrode, a ground electrode, and a cap that is attached to a front end of the body and forms a prechamber. The prechamber can be subdivided into a front part and a back part by an imaginary separating plane that is perpendicular to the center conductor at an end face of the center electrode. The front part of the prechamber is located on the front side of the separating plane, and the back part is located inside the body on the back side of the separating plane so that the volume of the back part is larger than the volume of the front part. Apart from its connection to the front part of the prechamber, the back part is closed in a gas-tight manner.
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