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公开(公告)号：US11256248B2
公开(公告)日：2022-02-22
申请号：US16696498
申请日：2019-11-26
Applicant: DENSO CORPORATION
Inventor： Hiroaki Maehara , Ryusuke Ishikawa , Takayuki Hattori , Tetsuya Miwa , Tatsuhito Yoshida
IPC: G05D1/00 , G07C9/00 , H04B17/318
Abstract: A reception range varying system includes a vehicle control device and a portable device. The reception range varying system determines whether a position where the portable device exists is within an execution range which enables execution of vehicle control over the portable device, or within a reception range but outside the execution range, and narrows the reception range so that the portable device is positioned outside the reception range while maintaining the reception range at a size equivalent to or larger than the execution range, on the basis that the position where the portable device exists is within the reception range but outside the execution range.
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公开(公告)号：US12142417B2
公开(公告)日：2024-11-12
申请号：US18449742
申请日：2023-08-15
Applicant: DENSO CORPORATION
Inventor： Norihiro Adachi , Kanechiyo Terada , Tetsuya Miwa
Abstract: An ignition coil for an internal combustion engine includes a primary bobbin including a winding cylinder part and a connection part between the winding cylinder part and a connector part, a primary coil including a primary main coil and a primary sub coil, and a secondary coil. When one of the primary main coil and the primary sub coil that includes an innermost coil part around the winding cylinder part is defined as a firstly-wound coil and the other is defined as a secondly-wound coil, firstly-wound ends, which are ends of the firstly-wound coil, and secondly-wound ends, which are ends of the secondly-wound coil, are attached to the connection part, and a shortest distance from a central axis of the winding cylinder part to each of the firstly-wound ends is smaller than a shortest distance from the central axis of the winding cylinder part to each of the secondly-wound ends.
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公开(公告)号：US11367567B2
公开(公告)日：2022-06-21
申请号：US17448741
申请日：2021-09-24
Applicant: DENSO CORPORATION
Inventor： Norihiro Adachi , Kanechiyo Terada , Tetsuya Miwa
Abstract: An ignition coil for an internal combustion engine includes a primary bobbin including a winding cylinder part and a connection part between the winding cylinder part and a connector part, a primary coil including a primary main coil and a primary sub coil, and a secondary coil. When one of the primary main coil and the primary sub coil that includes an innermost coil part around the winding cylinder part is defined as a firstly-wound coil and the other is defined as a secondly-wound coil, firstly-wound ends, which are ends of the firstly-wound coil, and secondly-wound ends, which are ends of the secondly-wound coil, are attached to the connection part, and a shortest distance from a central axis of the winding cylinder part to each of the firstly-wound ends is smaller than a shortest distance from the central axis of the winding cylinder part to each of the secondly-wound ends.
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公开(公告)号：US11125201B2
公开(公告)日：2021-09-21
申请号：US17126668
申请日：2020-12-18
Applicant: DENSO CORPORATION
Inventor： Kanechiyo Terada , Tetsuya Miwa
Abstract: An ignition control system for an internal combustion engine includes a controller, which includes an IGT generating section and an IGW generating section and is connected to ignition devices through an IGT signal line and an IGW signal line. The IGW signal line includes bifurcated portions, which sequentially bifurcate from a common main signal line. The bifurcated portions each correspond to one of the ignition devices and include a branched line, which is connected to an energy supply circuit inside the corresponding ignition device.
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公开(公告)号：US10938184B2
公开(公告)日：2021-03-02
申请号：US16931782
申请日：2020-07-17
Applicant: DENSO CORPORATION
Inventor： Yuuki Kawata , Masamichi Shibata , Kanechiyo Terada , Tetsuya Miwa
Abstract: A spark plug has a housing, an insulator, a central electrode and a ground electrode. At least one projection part is formed on an outer peripheral surface of the insulator at a location facing a distal end cylindrical surface of the insulator in a radial direction of the spark plug so that at least one projection part has a minimum distance measured from a plug central axis of the spark plug, which is longer than a distance of another part of the insulator measured from the plug central axis. On a cross section of the spark plug, at least one projection part is formed on the outer peripheral surface of the insulator in a direction between at least one projection part and the plug central axis which crosses to a direction between a rod-shaped part and the plug central axis.
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Patent Agency Ranking
公开(公告)号：US09793687B2
公开(公告)日：2017-10-17
申请号：US15266072
申请日：2016-09-15
Applicant: DENSO CORPORATION
Inventor： Masataka Deguchi , Masamichi Shibata , Kanechiyo Terada , Tetsuya Miwa , Hironori Osamura , Yuuki Tsukamoto
Abstract: A spark plug for an internal combustion engine is provided which includes a housing, a porcelain insulator, a center electrode, and an annular ground electrode. The housing has a small-diameter portion which has a smaller inner diameter and defines a front end thereof. The ground electrode is secured to a front end surface of the small-diameter portion and forms a spark gap between itself and an outer periphery of the center electrode. A pocket is formed between the inner periphery of the housing and a portion of the porcelain insulator which is located closer to a front end of the porcelain insulator than the mounting shoulder is. An air vent extends from outside the ground electrode in a radial direction of the spark plug to the pocket to establish communication between the pocket and the combustion chamber of the internal combustion engine.
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公开(公告)号：US11545300B2
公开(公告)日：2023-01-03
申请号：US17747024
申请日：2022-05-18
Applicant: DENSO CORPORATION
Inventor： Norihiro Adachi , Kanechiyo Terada , Tetsuya Miwa
Abstract: An ignition coil for an internal combustion engine includes a primary bobbin including a winding cylinder part and a connection part between the winding cylinder part and a connector part, a primary coil including a primary main coil and a primary sub coil, and a secondary coil. When one of the primary main coil and the primary sub coil that includes an innermost coil part around the winding cylinder part is defined as a firstly-wound coil and the other is defined as a secondly-wound coil, firstly-wound ends, which are ends of the firstly-wound coil, and secondly-wound ends, which are ends of the secondly-wound coil, are attached to the connection part, and a shortest distance from a central axis of the winding cylinder part to each of the firstly-wound ends is smaller than a shortest distance from the central axis of the winding cylinder part to each of the secondly-wound ends.
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公开(公告)号：US09825432B2
公开(公告)日：2017-11-21
申请号：US15261017
申请日：2016-09-09
Applicant: DENSO CORPORATION
Inventor： Masataka Deguchi , Kanechiyo Terada , Tetsuya Miwa , Yuuki Tsukamoto
Abstract: A spark plug for an internal combustion engine is provided which includes a housing, a porcelain insulator, a center electrode, and an annular ground electrode. The housing has a small-diameter portion which has a smaller inner diameter and defines a front end thereof. The ground electrode is secured to a front end surface of the small-diameter portion and forms a spark gap between itself and an outer periphery of the center electrode. The ground electrode is smaller in outer diameter than the front end surface of the small-diameter portion. A annular weld which joints the ground electrode and the small-diameter portion is formed in an annular boundary through which the front end surface of the small-diameter portion and the base end surface of the ground electrode face each other. The annular weld continuously and fully extends in a circumferential direction of the ground electrode.
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公开(公告)号：US10855057B2
公开(公告)日：2020-12-01
申请号：US16520392
申请日：2019-07-24
Applicant: DENSO CORPORATION
Inventor： Ryota Wakasugi , Fumiaki Aoki , Daisuke Tanaka , Akimitsu Sugiura , Tetsuya Miwa , Kanechiyo Terada
IPC: H01T13/20
Abstract: In a spark plug for an internal combustion engine, a cylindrical insulator is arranged radially inside a cylindrical ground electrode, and includes an insulator protruding portion protruding further toward a distal end side in an axial direction than a distal end of the ground electrode. A center electrode is held radially inside the insulator, and includes an exposed portion exposed from a distal end of the insulator protruding portion. The spark plug generates a discharge from the exposed portion to the ground electrode, in a discharge gap formed along a surface of the insulator protruding portion. At least one of the exposed portion and the insulator protruding portion includes a flow inlet that is open on an outer circumferential surface thereof, a flow outlet that is open toward the discharge gap, and a communication passage communicating between the flow inlet and the flow outlet.
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公开(公告)号：US10811850B2
公开(公告)日：2020-10-20
申请号：US16582430
申请日：2019-09-25
Applicant: DENSO CORPORATION
Inventor： Yuuki Kawata , Fumiaki Aoki , Daisuke Tanaka , Ryota Wakasugi , Kanechiyo Terada , Tetsuya Miwa , Akimitsu Sugiura
Abstract: In a spark plug for an internal combustion engine, a discharge gap is formed between a central electrode and a ground electrode in an axial direction of the spark plug. An insulator of a cylindrical shape has an axial hole and an insulator front end part. The axial hole is formed in the insulator, into which the central electrode is arranged and supported. The insulator front end part projects further toward a front side of the insulator in the axial direction of the spark plug than a location of an opening part formed at a front end side of the axial hole. The discharge gasp is formed in an auxiliary combustion chamber. The outer peripheral side of the auxiliary combustion chamber is covered with the insulator front end part.
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