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公开(公告)号：US11276524B2
公开(公告)日：2022-03-15
申请号：US16826448
申请日：2020-03-23
申请人： DENSO CORPORATION
发明人： Koji Tsunenaga , Shigemi Ito
摘要： An ignition coil includes a coil main body portion, a conductive member, and a protective portion. The coil main body portion generates a high voltage. The conductive member electrically connects the coil main body portion and a terminal metal fitting of a spark plug. The conductive member is arranged inside the protective portion. The protective portion has an electrically insulating property. The conductive member includes an elastic portion that elastically deforms in a longitudinal direction of the conductive member, and a conductive terminal that is arranged on a distal end side of the elastic portion. The conductive terminal has a distal end surface that includes a concave surface or a convex surface that abuts on the terminal metal fitting of the spark plug. A contact portion between the concave surface or the convex surface and the terminal metal fitting of the spark plug has an annular shape.
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公开(公告)号：US20200312544A1
公开(公告)日：2020-10-01
申请号：US16826448
申请日：2020-03-23
申请人： DENSO CORPORATION
发明人： Koji TSUNENAGA , Shigemi ITO
摘要： An ignition coil includes a coil main body portion, a conductive member, and a protective portion. The coil main body portion generates a high voltage. The conductive member electrically connects the coil main body portion and a terminal metal fitting of a spark plug. The conductive member is arranged inside the protective portion. The protective portion has an electrically insulating property. The conductive member includes an elastic portion that elastically deforms in a longitudinal direction of the conductive member, and a conductive terminal that is arranged on a distal end side of the elastic portion. The conductive terminal has a distal end surface that includes a concave surface or a convex surface that abuts on the terminal metal fitting of the spark plug. A contact portion between the concave surface or the convex surface and the terminal metal fitting of the spark plug has an annular shape.
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3.发明申请公开(公告)号：US20190353136A1
公开(公告)日：2019-11-21
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
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：US10320159B2
公开(公告)日：2019-06-11
申请号：US15710899
申请日：2017-09-21
发明人： Yasuyuki Shimizu , Takaaki Tanaka , Akira Nakagawa
摘要： By grounding a metal first housing, radiation noise generated from the coupling circuit is shielded. Further, by enclosing the first housing in a metal second housing in a manner such that the first housing and the second housing do not come into contact with each other, and grounding the second housing by connecting the second housing to an engine block, radiation noise generated by the capacitive component between the coupling circuit and the first housing is shielded by the second housing. As a result, the influence of this noise on peripheral devices of the high frequency discharge ignition device can be suppressed.
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公开(公告)号：US10190564B2
公开(公告)日：2019-01-29
申请号：US15355639
申请日：2016-11-18
发明人： Ganghua Ruan , Dejan Kienzle
IPC分类号： F02P3/045 , F02P3/04 , F02P15/10 , H01T13/44 , H01T15/00 , F02P3/05 , F02P17/12 , F02B75/18 , F02P3/055
摘要： A method for actuating a spark plug, in which the spark plug is assigned a first ignition coil and second ignition coil. Triggered by a start signal, the primary winding of the first ignition coil is charged, and the primary winding of the second ignition coil is charged with a delay D, for which 0≤D, by supplying a direct current, wherein, while each primary winding, is charged, the respective secondary winding is blocked; the primary current supplied to the primary windings is measured; after a period T, the primary winding of the first ignition coil is discharged, and with the delay D the primary winding of the second ignition coil is discharged; the secondary current flowing through the spark plug is measured; thereafter the primary windings of the first and second ignition coil start to be charged alternately when the secondary current falls below a threshold; the primary windings are discharged alternately when the primary current reaches an upper threshold; the above steps are repeated until the duration of discharge between two electrodes of the spark plug 1 reaches a predefined value Z.
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公开(公告)号：US10008831B2
公开(公告)日：2018-06-26
申请号：US15077475
申请日：2016-03-22
摘要： 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.
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公开(公告)号：US09947463B2
公开(公告)日：2018-04-17
申请号：US15227191
申请日：2016-08-03
申请人： DENSO CORPORATION
发明人： Katsunori Akimoto
CPC分类号： H01F38/12 , F02P3/02 , H01F27/022 , H01T13/44
摘要： An ignition coil for internal combustion engines is provided which includes magnetically coupled primary and secondary coils, a case, a high-voltage tower, a resistor, and resin packed in the case. The case has the primary coil and the secondary coil disposed therein. The high-voltage tower is attached to a tower mount formed on a front end of the case. The resistor is embedded in the high-voltage tower with a front and a base end surfaces thereof exposed from the high-voltage tower. The resin is packed in the case to seal the primary coil and the secondary coil. This structure enhances the productivity of an assembly of the high-voltage tower and the resistor.
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公开(公告)号：US09705293B2
公开(公告)日：2017-07-11
申请号：US14268226
申请日：2014-05-02
CPC分类号： H01T19/04 , F02P23/045 , H01T13/41 , H01T13/44 , H01T13/50 , Y10T29/49105
摘要： The invention relates to a corona ignition device, comprising a center electrode, an insulator surrounding the center electrode, a coil, which is connected to the center electrode, and a housing pipe, in which the coil is arranged. The housing pipe comprises a substrate layer and a conducting layer arranged radially inwardly of the substrate layer. The conducting layer is made of a material having a greater electrical conductivity than the material of the substrate layer. The conducting layer has a thickness of at least 0.1 mm. Also disclosed is a method for producing a corona ignition device, in which, to produce the housing pipe, an inner pipe is inserted into an outer pipe. The invention also relates to a corona ignition device of which the coil is surrounded by a soft-magnetic shielding.
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公开(公告)号：US09698575B2
公开(公告)日：2017-07-04
申请号：US14669979
申请日：2015-03-26
发明人： Timo Stifel , Martin Zebhauser , Wolfgang Lankes
摘要： This disclosure relates to a corona ignition device, comprising a center electrode, an insulator, into which the center electrode plugs, a coil, which is connected to the center electrode, and a housing, in which the coil is arranged. The housing is closed at one end by the insulator and at the other end carries an HF plug connector, which has an inner conductor connected to the coil and an outer conductor connected to the housing. In accordance with this disclosure, the HF plug connector contains a glass body, which seals an annular gap between the inner conductor and the outer conductor. This disclosure also relates to an HF plug connector suitable for such an HF ignition device.
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公开(公告)号：US09653885B2
公开(公告)日：2017-05-16
申请号：US14215375
申请日：2014-03-17
IPC分类号： H01T13/06 , H01T19/00 , H01T19/04 , H01T21/02 , H01T13/44 , H01T13/50 , H01T13/04 , H01T13/08
CPC分类号： H01T13/06 , F02P23/04 , H01T13/04 , H01T13/08 , H01T13/44 , H01T13/50 , H01T19/00 , H01T19/04 , H01T21/02 , Y10T29/49002
摘要： A corona igniter assembly 20 comprises an ignition coil assembly 22, a firing end assembly 24, and a metal tube 26 connecting the ignition coil assembly 22 to the firing end assembly 24. A rubber boot 28 is disposed in the metal tube 26 and compressed symmetrically between a coil output member 30 of the ignition coil assembly 22 and an insulator 42 of the firing end assembly 24. Thus, the rubber boot 28 fills any air gaps and provides a hermetic seal between the ignition coil assembly 22 and the firing end assembly 24 to prevent unwanted corona discharge from forming from those air gaps.
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