公开(公告)号：US20230114936A1

公开(公告)日：2023-04-13

申请号：US17866427

申请日：2022-07-15

Applicant: Knite, Inc.

Inventor： Artur P. Suckewer ,  Szymon Suckewer ,  Frederick H. Selmon, III

IPC: F02P3/08 ,  F02P9/00 ,  H01T13/50 ,  F02P23/04 ,  H05H1/48

Abstract: An ignition circuit and a method of operating an igniter (preferably a traveling spark igniter) in an internal combustion engine, including a high pressure engine. A high voltage is applied to electrodes of the igniter, sufficient to cause breakdown to occur between the electrodes, resulting in a high current electrical discharge in the igniter, over a surface of an isolator between the electrodes, and formation of a plasma kernel in a fuel-air mixture adjacent said surface. Following breakdown, a sequence of one or more lower voltage and lower current pulses is applied to said electrodes, with a low “simmer” current being sustained through the plasma between pulses, preventing total plasma recombination and allowing the plasma kernel to move toward a free end of the electrodes with each pulse.

公开(公告)号：US11557882B2

公开(公告)日：2023-01-17

申请号：US17385637

申请日：2021-07-26

Applicant: TENNECO INC.

Inventor： John Antony Burrows ,  John E. Miller ,  Kristapher I. Mixell ,  James D. Lykowski

IPC: H01T13/50 ,  H01T19/00 ,  H01T21/02 ,  F02P3/01 ,  F02P23/04 ,  H01T21/00 ,  H01T13/36 ,  H01T19/02 ,  H01T19/04

Abstract: A corona comprises a central electrode surrounded by an insulator, which is surrounded by a conductive component. The conductive component includes a shell and an intermediate part both formed of an electrically conductive material. The intermediate part is a layer of metal which brazes the insulator to the shell. An outer surface of the insulator presents a lower ledge, and the layer of metal can be applied to the insulator above the lower ledge prior to or after inserting the insulator into the shell. The conductive inner diameter is less than an insulator outer diameter directly below the lower ledge such the insulator thickness increases toward the electrode firing end. The insulator outer diameter is also typically less than the shell inner diameter so that the corona igniter can be forward-assembled.

公开(公告)号：US11506169B2

公开(公告)日：2022-11-22

申请号：US17237211

申请日：2021-04-22

Applicant: West Virginia University

Inventor： Andrew D. Lowery ,  Michael J. Spencer ,  James E. Smith

IPC: F02P23/04 ,  F02P3/01 ,  F02P9/00 ,  H01P7/04 ,  H01P7/06 ,  H01T13/50

Abstract: An apparatus for igniting a combustible mixture. In one example, the apparatus can include a coaxial cavity resonator assembly in a combustion environment. The apparatus can also include an operational feedback system and a controller. The operational feedback system can measure at least one of a voltage value and a current value of the coaxial cavity resonator assembly in the combustion environment. The controller can be configured to determine a condition of the coaxial cavity resonator assembly and modulate operation of the coaxial cavity resonator assembly based at least in part on the determined condition.

公开(公告)号：US10714907B2

公开(公告)日：2020-07-14

申请号：US16113177

申请日：2018-08-27

Applicant: Federal-Mogul LLC

Inventor： Kristapher I. Mixell ,  James D. Lykowski ,  Yusuf Esmail Neemuchwala

IPC: H01T19/04 ,  F02P23/04 ,  H01T13/50 ,  H01T13/39 ,  F02P3/01

Abstract: A firing tip for a corona igniter is provided. The firing tip includes a base formed of metal, such as nickel, and rivets formed of precious metal, such as iridium. The base includes indentations, and the rivets are disposed in the indentations of the base. The rivet has a melting point and/or wear resistance greater than the base. Typically, the indentations of the base include a concave surface and the rivets have a cylindrical shape matching the shape of the indentations. The rivets can be sharpened to a point. The rivets can include a first piece formed of precious metal and a second piece formed of nickel or nickel alloy, wherein an end of the first piece is welded to an end of the second piece, and the second piece is welded to the base. Alternatively, the rivets can be formed entirely of the precious metal.

公开(公告)号：US20190353136A1

公开(公告)日：2019-11-21

申请号：US16526046

申请日：2019-07-30

Applicant: TENNECO INC.

Inventor： KRISTAPHER I. MIXELL ,  YUSUF ESMAIL NEEMUCHWALA ,  JOHN E. MILLER ,  JAMES D. LYKOWSKI ,  JOHN ANTONY BURROWS

IPC: F02P23/04 ,  H01T13/44 ,  H01T13/50 ,  H01T21/02 ,  H01F27/32

Abstract: An igniter assembly comprising an ignition coil assembly connected to a firing end assembly by an extension, with a valve assembly disposed in a pressure chamber of the extension, is provided. The valve assembly includes a valve stem biased toward the ignition coil assembly by a spring to seal the pressure chamber. The valve assembly is used to evacuate contents from the pressure chamber by pressing the valve stem toward the spring and allowing contents of the pressure chamber to travel through and past the valve stem and out of the pressure chamber. The valve assembly is also used to fill the pressure chamber with an insulating medium by pressing the valve stem toward the spring and allowing the insulating medium to travel through and past the valve stem and into the pressure chamber after evacuating the contents out of the pressure chamber.

公开(公告)号：US20180368247A1

公开(公告)日：2018-12-20

申请号：US15877369

申请日：2018-01-22

Applicant: Knite, Inc.

Inventor： Artur P. Suckewer ,  Szymon Suckewer ,  Frederick H. Selmon, III

IPC: H05H1/48 ,  F02P3/08 ,  H01T13/50 ,  F02P23/04 ,  F02P9/00

Abstract: An ignition circuit and a method of operating an igniter (preferably a traveling spark igniter) in an internal combustion engine, including a high pressure engine. A high voltage is applied to electrodes of the igniter, sufficient to cause breakdown to occur between the electrodes, resulting in a high current electrical discharge in the igniter, over a surface of an isolator between the electrodes, and formation of a plasma kernel in a fuel-air mixture adjacent said surface. Following breakdown, a sequence of one or more lower voltage and lower current pulses is applied to said electrodes, with a low “simmer” current being sustained through the plasma between pulses, preventing total plasma recombination and allowing the plasma kernel to move toward a free end of the electrodes with each pulse.

公开(公告)号：US20180313317A1

公开(公告)日：2018-11-01

申请号：US15772303

申请日：2016-10-26

Applicant: IMAGINEERING, INC.

Inventor： Yuji IKEDA ,  Seiji KANBARA ,  Atsushi NISHIYAMA ,  Keisuke TAKEMOTO ,  Shoushi WATANABE

IPC: F02P3/01 ,  F02P23/04 ,  F02P13/00 ,  H01T13/20 ,  H01T13/50

CPC classification number: F02P3/01 ,  F02P23/045 ,  H01T13/22 ,  H01T13/467 ,  H01T13/50 ,  H01T13/52 ,  H05H1/46 ,  H05H1/52 ,  H05H2001/4607

Abstract: An erosion of an electrode is prevented in a spark plug that performs an ignition by use of a spark discharge and an electromagnetic wave. The spark plug that a pulse voltage for a spark discharge and an electromagnetic wave supplied into the spark discharge as an energy are applied to a center electrode, the spark plug comprises the center electrode, an insulator including an axis hole into which the center electrode is engaged, a ground electrode configured to form a space between the ground electrode and the center electrode in which the spark discharge is generated, and a cylindrical conductor that is arranged at an outer circumference of the insulator, and an annular member is formed at an inner circumference of the cylindrical conductor and at a position where a distance from a distal end surface of the cylindrical conductor is within a range between ⅛ wavelength and ¼ wavelength of the electromagnetic wave.

公开(公告)号：US10008831B2

公开(公告)日：2018-06-26

申请号：US15077475

申请日：2016-03-22

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Christian Sforzina ,  Stefano Papi ,  Massimo Augusto Dal Re ,  Giulio Milan

IPC: H01T13/38 ,  F02P23/04 ,  H01T19/00 ,  H01T13/44 ,  H01T13/50

CPC classification number: H01T13/38 ,  F02P23/04 ,  H01T13/44 ,  H01T13/50 ,  H01T19/00

Abstract: A corona ignition assembly comprising a plurality of different insulators disposed between an ignition coil assembly and firing end assembly is provided. A high voltage center electrode extends longitudinally between an igniter central electrode and the ignition coil assembly. A high voltage insulator formed of a fluoropolymer surrounds the high voltage center electrode, and a firing end insulator formed of alumina surrounds the igniter central electrode. According to one embodiment, a glue formed of a compliant and insulating material, such as a silicon-based material, forms a seal between the high voltage insulator and the firing end insulator. According to another embodiment, a dielectric compliant insulator is disposed between the high voltage insulator and the ignition coil assembly, and the glue forms a seal therebetween. The glue fills air gaps to prevent unwanted corona discharge, and thus extends the life of the materials and directs energy to the firing end.

公开(公告)号：US09991680B2

公开(公告)日：2018-06-05

申请号：US14899229

申请日：2014-06-17

Applicant: IMAGINEERING, INC.

Inventor： Yuji Ikeda ,  Seiji Kanbara

IPC: F02P3/01 ,  F02P23/04 ,  H01T13/00 ,  H01T13/20 ,  H01T15/00 ,  H05H1/30 ,  H05H1/52 ,  H01T13/39 ,  H01T13/40 ,  H01T13/50 ,  H05H1/46

CPC classification number: H01T13/39 ,  F02P3/02 ,  F02P9/007 ,  F02P23/045 ,  H01T13/40 ,  H01T13/50 ,  H05H1/46

Abstract: To provide an ignition plug having low power loss even though iron is a main component of a center electrode thereof, to which a high frequency power such as a microwave is electrically supplied. A low impedance layer 6 composed of a material having magnetic permeability lower than iron is provided between an outer peripheral surface of a center electrode 2 and an inner peripheral surface of an axial hole 30 of an insulator 3. The low impedance layer 6 is in contact with at least the outer peripheral surface (surface) of the center electrode 2, thereby reducing power loss of an electromagnetic wave flowing on the surface of the center electrode 2. More particularly, the low impedance layer 6 is made of silver, copper, gold, aluminum, tungsten, molybdenum, titanium, zirconium, niobium, tantalum, bismuth, palladium, lead, tin, an alloy composed mainly of these metals, or a composite material of these metals.

公开(公告)号：US09941671B2

公开(公告)日：2018-04-10

申请号：US15271874

申请日：2016-09-21

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Kristapher Mixell ,  Paul Phillips

IPC: H01T19/00 ,  H01T13/50 ,  H01T21/02 ,  F02P23/04

CPC classification number: H01T19/00 ,  F02P23/04 ,  H01T13/04 ,  H01T13/50 ,  H01T21/02

Abstract: A corona igniter assembly including an ignition coil assembly, a firing end assembly, and a dielectric compliant member is provided. The dielectric compliant member is compressed between a high voltage insulator of the ignition coil assembly and a ceramic insulator of the firing end assembly. During assembly of the corona igniter assembly, the dielectric compliant member pushes air outwards and forms a hermetic seal between the high voltage insulator and the ceramic insulation. The dielectric compliant member can have a rounded upper surface, which may improve the hermetic seal. Alternatively, or in addition to the rounded surface on the dielectric compliant member, the lower surface of the high voltage insulator can be rounded to push air outwards during assembly and provide a hermetic seal.