公开(公告)号：US09787064B2

公开(公告)日：2017-10-10

申请号：US14269448

申请日：2014-05-05

Applicant: Federal-Mogul Ignition Company

Inventor： Patrick Durham ,  James Lykowski

IPC: F23Q3/00 ,  H01T19/04 ,  H01T21/00 ,  H01T13/36 ,  H01T13/50 ,  H01T21/02

CPC classification number: H01T19/04 ,  H01T13/36 ,  H01T13/50 ,  H01T21/00 ,  H01T21/02 ,  Y10T29/4902

Abstract: A corona igniter (20) comprises a central electrode (22) surrounded by an insulator (24), which is surrounded by a metal shell (26). A ceramic combustion seal (30) is disposed along the gap (32) between a shell lower end shell (52) and the insulator nose region (48) to provide a hermetic seal therebetween. The ceramic combustion seal (30) is typically a bushing, cylinder, or ring formed of sintered alumina. A glass material or glass/ceramic mixture (60) typically adheres the ceramic combustion seal (30) to the shell (26) and the insulator (24). Alternatively, the ceramic combustion seal (30) is brazed to the shell (26), and the glass material or glass/ceramic mixture (60) adheres the ceramic combustion seal (30) to the insulator (24).

公开(公告)号：US09728941B2

公开(公告)日：2017-08-08

申请号：US14540861

申请日：2014-11-13

Applicant: Federal-Mogul Ignition Company

Inventor： James Lykowski ,  Keith Hampton

IPC: H01S4/00 ,  H01T21/02 ,  H01T13/06 ,  H01T13/52 ,  H01T19/00

CPC classification number: H01T21/02 ,  H01T13/06 ,  H01T13/52 ,  H01T19/00 ,  Y10T29/49002

Abstract: A corona igniter (20) includes a metal shell (32) with a corona reducing lip (38) spaced from an insulator (26) and being free of sharp edges (40) to prevent arcing (42) in a rollover region and concentrate the electrical field at an electrode firing end (48). The corona reducing lip (38) includes lip outer surfaces (88) being round, convex, concave, or curving continuously with smooth transitions (90) therebetween. The corona reducing lip (38) includes lip outer surfaces (88) presenting spherical lip radii (r1) being at least 0.004 inches. The corona igniter (20) also includes shell inner surfaces (104) and insulator outer surfaces (75) facing one another being free of sharp edges (40).

公开(公告)号：US09716371B2

公开(公告)日：2017-07-25

申请号：US14568438

申请日：2014-12-12

Applicant: Federal-Mogul Ignition Company

Inventor： John Antony Burrows

IPC: H01T23/00 ,  H01T19/00 ,  G01M15/02 ,  G01N27/02 ,  F02P23/04 ,  H01T15/00 ,  H02M3/00 ,  F02P3/04 ,  F02P5/15 ,  F02P17/00

CPC classification number: H01T19/00 ,  F02N2300/2011 ,  F02P3/0407 ,  F02P5/1502 ,  F02P17/00 ,  F02P23/04 ,  G01M15/02 ,  G01N27/02 ,  H01T15/00 ,  H02M3/00

Abstract: A corona ignition system including a corona igniter, an energy supply, and a frequency detector is provided. The energy supply provides energy to the corona igniter during corona events which are spaced from one another by idle periods, during which no energy is provided to the corona igniter. During the idle periods, the frequency detector obtains the resonant frequency of the corona igniter from at least one of an output voltage and an output current of the energy stored in the corona igniter. The resonant frequency measured during this idle period is dependent only on the corona igniter, and not any other components of the system, and thus is very accurate. The drive frequency of future corona events can then be set based on this accurately measured resonant frequency to achieve a robust corona discharge.

公开(公告)号：US09698573B2

公开(公告)日：2017-07-04

申请号：US14076840

申请日：2013-11-11

Applicant: FEDERAL-MOGUL IGNITION COMPANY

Inventor： William J. Walker, Jr.

IPC: H01T13/34 ,  H01T13/38 ,  H01T21/02

CPC classification number: H01T13/34 ,  H01T13/38 ,  H01T21/02

Abstract: A method for making an extruded insulator for a spark plug in a manner that minimizes pores, relics and/or other defects in the insulator microstructure so that the overall dielectric strength or performance of the insulator is improved. The method may be used to manufacture an extruded insulator that avoids many of the drawbacks associated with such defects, but also has a stepped internal bore for receiving a center electrode. In one embodiment, the method uses a multi-phase extrusion process to extrude a ceramic paste around an elongated arbor and form an extruded section, and then removes the arbor from the extruded section to reveal a stepped internal bore.

公开(公告)号：US09651306B2

公开(公告)日：2017-05-16

申请号：US14216094

申请日：2014-03-17

Applicant: FEDERAL-MOGUL IGNITION COMPANY

Inventor： Keith Firstenberg

IPC: F26B5/16

CPC classification number: F26B5/16

Abstract: A method for drying a seal material for use in manufacturing an ignition device, e.g., a spark plug. A free-flowing or loose seal material having a moisture content is provided and brought together with a desiccant for a time sufficient to produce a dry seal material by reducing the moisture content of the loose seal material to a desired level. Thereafter, the dry seal material and the desiccant may be separated from one another so that the dry seal material can be used to form a seal within an internal bore of a spark plug.

公开(公告)号：US09627856B2

公开(公告)日：2017-04-18

申请号：US14709004

申请日：2015-05-11

Applicant: FEDERAL-MOGUL IGNITION COMPANY

Inventor： Andrew Stamper ,  Gordon McIntosh ,  Raymond Bayer

IPC: H01T13/39 ,  H01T13/32 ,  H01T21/02

CPC classification number: H01T13/39 ,  H01T13/32 ,  H01T21/02

Abstract: An industrial spark plug (20) includes a central electrode (24) with a central base (30) formed of a nickel-based material and a central firing tip (32) formed of an iridium-based material. The central firing tip (32) has a tip thickness (tct) of 0.02 to 0.03 inches, a tip diameter (dct) of 0.1184 to 0.1776 inches, and an aspect ratio of 4.736 to 7.104. The central firing tip (32) is electron beam welded to the central base (30) to provide a robust joint therebetween. The central electron beam weld (36) includes a mixture of re-crystallized iridium-based material and re-crystallized nickel-based material extending continuously along and over the entire welding interface. The spark plug (20) also includes a ground electrode (26) with a ground firing tip (38) electron beam welded to a ground base (42).

公开(公告)号：US09525274B2

公开(公告)日：2016-12-20

申请号：US14307796

申请日：2014-06-18

Applicant: Federal-Mogul Ignition Company

Inventor： John Antony Burrows ,  Zdenek Svimbersky ,  Robert Emil Ratz

IPC: F02P15/00 ,  F02P7/00 ,  H01T19/00 ,  F02P7/03 ,  F02P23/04 ,  F02P15/08 ,  H01T13/44

CPC classification number: H01T19/00 ,  F02P7/03 ,  F02P15/08 ,  F02P23/04 ,  H01T13/36 ,  H01T13/44

Abstract: A corona discharge ignition system comprising a plurality of corona igniters is provided. The system includes a control and drive electronics unit for directing the energy from a power supply toward the corona igniters; and a single transformer disposed between the control and drive electronics unit and the plurality of corona igniters. A plurality of igniter switching units is connected to the control and drive electronics unit and each igniter switching unit is connected to a separate one of the corona igniters. Each igniter switching unit allows current to travel from the transformer to the one connected corona igniter when activated and prevents current from traveling from the transformer to the one connected corona igniter and from the one connected corona igniter toward the transformer when deactivated. Only one of the igniter switching units is activated at any given time during operation of the system.

Abstract translation: 提供包括多个电晕点火器的电晕放电点火系统。 该系统包括控制和驱动电子单元，用于将来自电源的能量引导到电晕点火器; 以及设置在控制和驱动电子单元与多个电晕点火器之间的单个变压器。 多个点火开关单元连接到控制和驱动电子单元，并且每个点火器切换单元连接到单独的电晕点火器。 每个点火器开关单元允许电流在变压器启动时从变压器行进到一个连接的电晕点火器，并且在停用时防止电流从变压器行进到一个连接的电晕点火器，并从一个连接的电晕点火器向变压器运行。 只有一个点火开关单元在系统运行期间的任何给定时间被激活。

公开(公告)号：US20160365706A1

公开(公告)日：2016-12-15

申请号：US15180606

申请日：2016-06-13

Applicant: Federal-Mogul Ignition Company

Inventor： Jeremy M. Bowman ,  Kevin J. Kowalski

IPC: H01T13/08

CPC classification number: H01T13/08 ,  F02P13/00 ,  H01T21/00

Abstract: A spark plug and a method of manufacturing the same, where the spark plug has a metal shell, an insulator, a center electrode, a ground electrode, and a gasket located over a threaded portion of the shell and used to seal the spark plug against a cylinder head. Once the gasket is attached on the spark plug, it is shrunk to become a post-formed gasket with an inner diameter that prevents the post-formed gasket from slipping over a threaded portion of the metallic shell. This process may be carried out with a collet type machine that produces a post-formed gasket that is flat and has a substantially uniform thickness, which can improve the sealability of the gasket. This may be important when the spark plug is installed in a cylinder head made from a lost foam casting process or other process that creates a somewhat porous sealing surface.

Abstract translation: 一种火花塞及其制造方法，其中火花塞具有金属壳，绝缘体，中心电极，接地电极和位于壳体的螺纹部分上方并用于密封火花塞的衬垫以抵抗 气缸盖。 一旦垫圈附接在火花塞上，它就会收缩成为一个内径的后成形垫片，该内径可防止后成型垫圈滑过金属外壳的螺纹部分。 该过程可以用夹套式机器进行，该机器产生平坦的并且具有基本上均匀的厚度的后成形垫圈，这可以提高垫圈的密封性。 当将火花塞安装在由失去泡沫铸造工艺或其它工艺制成的气缸盖中时，这可能是重要的，其产生稍微多孔的密封表面。

公开(公告)号：US20160344166A1

公开(公告)日：2016-11-24

申请号：US15230927

申请日：2016-08-08

Applicant: Federal-Mogul Ignition Company

Inventor： Keith Hampton ,  Alfred Permuy ,  John Antony Burrows

IPC: H01T19/00 ,  H03F3/21 ,  H03F1/02 ,  H01F38/12

CPC classification number: H01T19/00 ,  F02P3/01 ,  F02P3/04 ,  F02P9/002 ,  F02P17/00 ,  F02P23/04 ,  F23Q3/004 ,  H01F38/12 ,  H01T13/50 ,  H02M7/538 ,  H03F3/21 ,  H03F3/2173 ,  H03F2200/541 ,  Y02B70/1441

Abstract: A power amplifier circuit for a corona ignition system is provided. The circuit includes an inductor and capacitor connected to one end of a secondary winding of an RF transformer. The other end of the secondary winding is connected to a current sensor which is connected to ground. The transformer also has a primary winding with one end connected to a voltage supply and the other end attached to a pair of switches. The windings are wound around a core. Current flowing from the DC voltage supply to the switches causes a magnetic flux in the core. A voltage is generated on the secondary winding by the current that flows through the igniter. This voltage is fed back to the switches, controlling on and off timing. Voltage is provided to the corona igniter or pulled from the igniter when the current traveling into or from the igniter is at zero.

Abstract translation: 提供了一种用于电晕点火系统的功率放大器电路。 该电路包括连接到RF变压器的次级绕组的一端的电感器和电容器。 次级绕组的另一端连接到连接到地的电流传感器。 变压器还具有初级绕组，其一端连接到电压源，另一端连接到一对开关。 绕组缠绕在芯上。 从直流电源流向开关的电流导致磁芯中的磁通量。 通过流过点火器的电流在次级绕组上产生电压。 该电压被反馈到开关，控制开和关定时。 当进入或离开点火器的电流为零时，电压被提供给电晕点火器或从点火器拉出。

公开(公告)号：US20160344164A1

公开(公告)日：2016-11-24

申请号：US15225216

申请日：2016-08-01

Applicant: Federal-Mogul Ignition Company

Inventor： Keith Firstenberg ,  William J. Walker

IPC: H01T13/08 ,  C03C8/24 ,  C03C3/066 ,  C03C4/14 ,  H01T21/02 ,  C03C3/093

CPC classification number: H01T13/08 ,  C03C3/066 ,  C03C4/14 ,  C03C8/18 ,  C03C8/24 ,  H01T13/34 ,  H01T21/02

Abstract: An electrically conductive glass seal for providing a hermetic bond between an electrically conductive component and an insulator of a spark plug is provided. The glass seal is formed by mixing glass frits, binder, expansion agent, and electrically conductive metal particles. The glass frits can include silica (SiO2), boron oxide (B2O3), aluminum oxide (Al2O3), bismuth oxide (Bi2O3), and zinc oxide (ZnO); the binder can include sodium bentonite or magnesium aluminum silicate, polyethylene glycol (PEG), and dextrin; the expansion agent can include lithium carbonate; and the electrically conductive particles can include copper. The finished glass seal includes the glass in a total amount of 50.0 to 90.0 weight (wt. %), and electrically conductive metal particles in an amount of 10.0 to 50.0 wt. %, based on the total weight of the glass seal.

Abstract translation: 提供一种用于在导电部件和火花塞的绝缘体之间提供气密接合的导电玻璃密封件。 玻璃密封通过混合玻璃料，粘合剂，膨胀剂和导电金属颗粒而形成。 玻璃料可以包括二氧化硅（SiO 2），氧化硼（B 2 O 3），氧化铝（Al 2 O 3），氧化铋（Bi 2 O 3）和氧化锌（ZnO）。 粘合剂可以包括钠膨润土或硅酸镁铝，聚乙二醇（PEG）和糊精; 膨胀剂可以包括碳酸锂; 并且导电颗粒可以包括铜。 成品玻璃密封件包括总量为50.0至90.0重量（wt。％）的玻璃，并且导电金属颗粒的量为10.0至50.0wt。 ％，基于玻璃密封件的总重量。