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公开(公告)号：US11557882B2
公开(公告)日：2023-01-17
申请号：US17385637
申请日：2021-07-26
申请人： TENNECO INC.
IPC分类号： H01T13/50 , H01T19/00 , H01T21/02 , F02P3/01 , F02P23/04 , H01T21/00 , H01T13/36 , H01T19/02 , H01T19/04
摘要： 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.
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公开(公告)号：US20190123516A1
公开(公告)日：2019-04-25
申请号：US16222690
申请日：2018-12-17
申请人： Tenneco Inc.
发明人： John Antony Burrows
摘要： A system and method for detecting resonant frequency of a corona igniter concurrent with operation of the corona igniter is provided. The method includes providing a plurality of pulses of energy to the corona igniter, each having a pulse duration and spaced from one another by a deadtime duration during which no energy is provided to the corona igniter. Each pulse duration is ceased before current flowing in the corona igniter crosses zero, and each zero crossing of the current occurs during one of the deadtime durations. The next pulse of energy is provided to the corona igniter in response to the zero crossing of the current. A resonant frequency value is then obtained based on a sum of the pulse and deadtime durations of two consecutive cycles, or the time between zero crossings. The resonant frequency values become more accurate over time, and the drive frequency is adjusted accordingly.
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公开(公告)号：US10774805B2
公开(公告)日：2020-09-15
申请号：US16526046
申请日：2019-07-30
申请人： TENNECO INC.
发明人： Kristapher I. Mixell , Yusuf Esmail Neemuchwala , John E. Miller , James D. Lykowski , John Antony Burrows
IPC分类号： F23Q3/00 , F02P23/04 , H01T13/50 , H01F27/32 , H01T13/44 , H01T21/02 , H01F38/12 , H01T19/02 , H01F27/30 , H01T13/56 , F02P3/01
摘要： 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.
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公开(公告)号：US20200059073A1
公开(公告)日：2020-02-20
申请号：US16661275
申请日：2019-10-23
申请人： TENNECO INC.
摘要： 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.
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公开(公告)号：US11075504B2
公开(公告)日：2021-07-27
申请号：US16661275
申请日：2019-10-23
申请人： TENNECO INC.
IPC分类号： H01T13/50 , H01T19/00 , H01T21/02 , F02P3/01 , F02P23/04 , H01T21/00 , H01T13/36 , H01T19/02 , H01T19/04
摘要： 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.
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公开(公告)号：US11022086B2
公开(公告)日：2021-06-01
申请号：US16656151
申请日：2019-10-17
申请人： Tenneco Inc.
摘要： An insulator for a corona igniter, referred to as a barrier discharge ignition (BDI) device, for use in an internal combustion engine, is provided. A central electrode is disposed in a slot of the insulator and an electrode tip is spaced from a round insulator tip by insulating material. A shell formed of metal surrounds a portion of the insulator. The insulator has a thickness tapering between a shell firing surface and the insulator tip. The tapering insulator thickness is unidirectional and thus does not increase between a start of the taper and the insulator tip. A method of manufacturing an insulator for a corona igniter is also provided. Equations can be used to determine if a taper in the insulator thickness is needed to encourage corona propagation along a core nose projection of the insulator, and if so, the location and size of the taper.
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公开(公告)号：US20210359494A1
公开(公告)日：2021-11-18
申请号：US17385637
申请日：2021-07-26
申请人： TENNECO INC.
摘要： 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.
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公开(公告)号：US11050222B2
公开(公告)日：2021-06-29
申请号：US16222690
申请日：2018-12-17
申请人： Tenneco Inc.
发明人： John Antony Burrows
IPC分类号： H01T19/00 , F02P5/15 , F02P23/04 , H01T15/00 , F02P3/04 , H02M3/00 , G01M15/02 , G01N27/02 , F02P17/00
摘要： A system and method for detecting resonant frequency of a corona igniter concurrent with operation of the corona igniter is provided. The method includes providing a plurality of pulses of energy to the corona igniter, each having a pulse duration and spaced from one another by a deadtime duration during which no energy is provided to the corona igniter. Each pulse duration is ceased before current flowing in the corona igniter crosses zero, and each zero crossing of the current occurs during one of the deadtime durations. The next pulse of energy is provided to the corona igniter in response to the zero crossing of the current. A resonant frequency value is then obtained based on a sum of the pulse and deadtime durations of two consecutive cycles, or the time between zero crossings. The resonant frequency values become more accurate over time, and the drive frequency is adjusted accordingly.
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