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公开(公告)号：JP2013177888A
公开(公告)日：2013-09-09
申请号：JP2013020136
申请日：2013-02-05
Applicant: Denso Corp , 株式会社デンソー
Inventor： SHIBATA MASAMICHI , KAJITA YUJI , MIZUTANI ATSUYA , HATTORI KOICHI , IMANAKA TAISHIN
CPC classification number: H01T13/44 , F02P3/0407 , F02P3/0552 , F02P9/002
Abstract: PROBLEM TO BE SOLVED: To provide an ignition system which can restrict decreasing of a constant-voltage duration of a spark plug and consequently avoid occurrence of an accidental fire of an engine in an engine.SOLUTION: One of both ends of a secondary coil 12b is connected to a positive electrode side of a battery 14 through a low voltage side path L1, while the another end is connected to a center electrode 10a through a connection path L2. A constant-voltage path L3 whose one end is grounded is connected to the connection path L2. A block diode 18 is provided at the secondary coil 12b side rather than a connection point with the constant-voltage path L3 in the connection path L2, and a Zener diode 20 is provided at the constant-voltage path L3. Specifically, anodes of the block diode 18 and the Zener diode 20 are connected to each other.
Abstract translation: 要解决的问题：提供一种点火系统，其可以限制火花塞的恒定电压持续时间的降低，并且因此避免发动机在发动机中的意外火灾。解决方案：二次线圈12b的两端之一 通过低压侧路径L1与电池14的正极侧连接，另一端通过连接路径L2与中心电极10a连接。 一端接地的恒定电压路径L3连接到连接路径L2。 在次级线圈12b侧而不是与连接路径L2中的恒定电压路径L3的连接点设置块状二极管18，并且在恒定电压路径L3设置齐纳二极管20。 具体地，块二极管18和齐纳二极管20的阳极彼此连接。
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公开(公告)号：JP2013177881A
公开(公告)日：2013-09-09
申请号：JP2012195099
申请日：2012-09-05
Applicant: Denso Corp , 株式会社デンソー
Inventor： SHIBATA MASAMICHI , MIZUTANI ATSUYA , IMANAKA TAISHIN , HATTORI KOICHI
IPC: F02P17/00
Abstract: PROBLEM TO BE SOLVED: To provide a control apparatus for an internal combustion engine, which is applied to an ignition device where a zener diode 44 is connected in parallel to a spark plug 26, and which can appropriately determine that degradation occurs at the spark plug 26.SOLUTION: In an ignition device, a constant voltage path L3 whose one end is grounded is connected to a connection path L2 which connects a center electrode 26a of an spark plug 26 and a secondary coil 38b. The constant voltage path L3 includes a zener diode 44 and a resistor 45. Here, after power distribution to a primary coil 38a is started, in a period when power distribution to this coil is interrupted, in case it is determined that current is detected by the resistor 45, degradation determination processing for determining that the spark plug 26 degrades is performed.
Abstract translation: 要解决的问题：提供一种用于内燃机的控制装置，该控制装置被施加到点火装置，其中齐纳二极管44并联连接到火花塞26，并且可以适当地确定在火花塞处发生的劣化 26。解决方案：在点火装置中，一端接地的恒压通路L3连接到连接火花塞26的中心电极26a和次级线圈38b的连接路径L2。 恒定电压路径L3包括齐纳二极管44和电阻器45.这里，在对初级线圈38a进行配电开始之后，在对该线圈的配电中断的期间，在判断为通过 执行电阻器45，用于确定火花塞26劣化的劣化判定处理。
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公开(公告)号：JP2013100811A
公开(公告)日：2013-05-23
申请号：JP2012200852
申请日：2012-09-12
Applicant: Denso Corp , 株式会社デンソー
Inventor： KAJITA YUJI , SHIBATA MASAMICHI , IMANAKA TAISHIN , MIZUTANI ATSUYA , OSUGA TSUTOMU
IPC: F02P3/04
CPC classification number: F02P13/00 , F02P3/04 , F02P3/051 , F02P3/053 , F02P3/0838 , F02P3/0884 , F02P9/00 , F02P15/00
Abstract: PROBLEM TO BE SOLVED: To compatibly achieve both controlling the plug consumption by avoiding occurrence of the phenomenon of discharge repetition and avoiding accident fire caused by insufficient discharge period.SOLUTION: An ignition device includes: a zener diode 40 (a limiting means) for limiting the primary voltage of an ignition coil 20 to be equal to or lower than the zener voltage V1ZD; and a switch circuit 50 (a changing means) which makes a change to stop the limit function by the zener diode 40 when the discharge is started, and to demonstrate the limit function for the predetermined period Tb after the discharge is started. Thus, in the predetermined period Tb after the discharge is started, the secondary voltage V2 is limited to be equal to or higher than the secondary limit value V2th (the absolute value of V2 is ≤V2th). Thus, Even when blowout occurs during the discharge, discharging again immediately after the blowout occurs can be avoided, and thereby, the plug consumption caused by the repeated discharge can be avoided. In addition, when the blowout does not occur, the discharge caused by the induction discharge can be continued as usual as it is, and thereby, any possibility of accident fire caused by the insufficient discharge period can be avoided.
Abstract translation: 要解决的问题：通过避免发生放电重复现象并避免由于放电时间不足引起的事故火灾，兼有控制插头消耗。 点火装置包括：用于将点火线圈20的初级电压限制在等于或低于齐纳电压V1ZD的齐纳二极管40（限制装置）; 以及开始电路50（改变装置），其在放电开始时使齐纳二极管40停止极限功能的变化，并且在放电开始之后显示预定时间段Tb的限制功能。 因此，在放电开始后的规定期间Tb中，次级电压V2被限制为等于或高于次级限制值V2th（V2的绝对值≤V2th）。 因此，即使在排出时发生喷出，也可以避免在喷出发生之后立即再次排出，从而可以避免由重复排出引起的堵头消耗。 此外，当不发生吹出时，由于感应放电引起的放电可以照原样继续，从而可以避免由于放电时间不足引起的任何可能的事故火灾。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2013096383A
公开(公告)日：2013-05-20
申请号：JP2011242760
申请日：2011-11-04
Applicant: Denso Corp , 株式会社デンソー
Inventor： IMANAKA TAISHIN , SHIBATA MASAMICHI , MIZUTANI ATSUYA , HATTORI KOICHI
Abstract: PROBLEM TO BE SOLVED: To enable positive discharge while suppressing an increase in size of an ignition coil and suppressing electrode wear.SOLUTION: This ignition device includes: the ignition coil 20 configured by winding a primary coil L1A for positive discharge, a primary coil L1B for negative discharge and a secondary coil L2 around the same core 21; and a control means for controlling primary current flowing in the primary coil L1A for positive discharge and the primary coil L1B for negative discharge to switch the positive discharge to negative discharge specifying a center electrode of an ignition plug as a negative electrode in the middle of the positive discharge specifying the center electrode as a positive electrode. The two primary coils L1A and L1B are arranged side by side in an axial direction of a core 21. Accordingly, coupling coefficients of the two primary coils L1A and L1B with each other can be set to be lower to suppress canceling of magnetic flux generated in the primary coils L1A and L1B with each other when charging the primary coil L1B for negative discharge in the middle of the discharge of the primary coil L1A for positive discharge.
Abstract translation: 要解决的问题：为了在抑制点火线圈的尺寸增加并抑制电极磨损的同时实现正放电。 该点火装置包括：点火线圈20，其通过卷绕用于正放电的初级线圈L1A，用于负极放电的初级线圈L1B和围绕相同芯21的次级线圈L2构成; 以及控制装置，用于控制在用于正放电的初级线圈L1A中流动的一次电流和用于负放电的初级线圈L1B，以将正放电切换到负放电，以将火花塞的中心电极指定为负电极 将中心电极指定为正极的正放电。 两个初级线圈L1A和L1B在芯21的轴向上并排布置。因此，两个初级线圈L1A和L1B彼此的耦合系数可以被设置为较低，以抑制在 初级线圈L1A和L1B在初级线圈L1A的放电中间对正放电进行充电时对初级线圈L1B充电以进行负极放电。 版权所有（C）2013，JPO＆INPIT
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Patent Agency Ranking
公开(公告)号：JP2013064358A
公开(公告)日：2013-04-11
申请号：JP2011203892
申请日：2011-09-17
Applicant: Denso Corp , 株式会社デンソー
Inventor： SHIBATA MASAMICHI , IMANAKA TAISHIN , TSUBOTA NORIYOSHI , MIZUTANI ATSUYA , HATTORI KOICHI
Abstract: PROBLEM TO BE SOLVED: To provide an ignition device that prevents consumption of a ground electrode.SOLUTION: In the ignition device 100 that repeats a combustion cycle in which a mixture in a combustion chamber 90 is ignited, an ignition control circuit 40 that applies a voltage to an ignition plug 20 selects a negative discharge voltage where the negative pole is a central electrode 21 and the positive pole is a ground electrode 23, or a positive discharge voltage, where the positive pole is a central electrode 21 and the negative pole is a ground electrode 23. The ignition control circuit 40 causes spark discharge as capacitive discharge, when applied with the positive discharge voltage, for each combustion cycle, in a discharge gap 25 between the central electrode 21 and the ground electrode 23. Then, the ignition control circuit 40 selects application of the negative discharge voltage during the spark discharge by applying the positive discharge voltage, and continues the spark discharge as inductive discharge.
Abstract translation: 要解决的问题：提供一种防止接地电极消耗的点火装置。 解决方案：在重复燃烧室90中的混合物的燃烧循环的点火装置100中，向火花塞20施加电压的点火控制电路40选择负极放电电压，其中负极 是中心电极21，正极是接地电极23或正极放电电压，其中正极是中心电极21，负极是接地电极23.点火控制电路40引起火花放电为电容 在中心电极21和接地电极23之间的放电间隙25中，对于每个燃烧循环，当施加正的放电电压时，放电。然后，点火控制电路40选择在火花放电期间施加负的放电电压 施加正放电电压，并继续作为感应放电的火花放电。 版权所有（C）2013，JPO＆INPIT
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公开(公告)号：JP2009135207A
公开(公告)日：2009-06-18
申请号：JP2007308917
申请日：2007-11-29
Applicant: Denso Corp , 株式会社デンソー
Inventor： MIZUTANI ATSUYA
Abstract: PROBLEM TO BE SOLVED: To provide an ignition coil with which a spring can be easily manufactured and which can effectively suppress the occurrence of a fine corona discharge to effectively suppress a decrease in spark voltage. SOLUTION: The ignition coil 1 is constituted by coupling together a coil unit 11 formed by storing a primary coil 21 and a secondary coil 22 in a coil case 4 and a joint unit 5 for electrically connecting a high-voltage winding end of the secondary coil 22 to a spark plug. The ignition coil 1 is configured to have the joint unit 5 disposed in a plug hole provided to a metallic cylinder head and also to have the coil unit 11 disposed nearby an opening portion of the plug hole. The joint unit 5 has a joint case 51 made of a cylindrical resin and the spring 6 disposed in the joint case 51. The spring 6 is formed using a steel wire 60, and thinner at an intermediate portion 602 in its axial direction L than both end portions 601 in the axial direction L. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题：提供一种可以容易地制造弹簧的点火线圈，并且可以有效地抑制电晕放电的发生，从而有效地抑制了火花电压的降低。 解决方案：点火线圈1通过将通过将初级线圈21和次级线圈22存储在线圈壳体4中而形成的线圈单元11和用于将线圈单元11电连接到线圈壳体4的高压绕组端 次级线圈22到火花塞。 点火线圈1被配置为使接头单元5设置在设置在金属制气缸盖上的塞孔中，并且还具有设置在插塞孔的开口部附近的线圈单元11。 接头单元5具有由圆柱形树脂制成的接头壳体51和布置在接头壳体51中的弹簧6.弹簧6使用钢丝60形成，并且在中间部分602处在其轴向方向L上比两个 端部601在轴向方向L.版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2008280957A
公开(公告)日：2008-11-20
申请号：JP2007127321
申请日：2007-05-11
Applicant: Denso Corp , 株式会社デンソー
Inventor： MIZUTANI ATSUYA
Abstract: PROBLEM TO BE SOLVED: To solve such a problem that productivity and cost performance are retarded since die molded parts corresponding to different lengths need to be manufactured in order to cope with various engine head plug hole lengths. SOLUTION: A plurality of irregularities are provided on at least one of an outer circumference surface of a pole part 10b and an inner circumference surface of a seal member 11 and a boot member 12 in an axial direction thereof. Consequently, engagement position of the irregularities can be selected with respect to the axial direction of the pole part 10b when the seal member 11 and the boot member 12 are built on the pole part 10b. Namely, number of total lengths of the plug socket 3 can be number of combinations provided by multiplying number of concave parts of the seal member 11 by number of concave parts of the boot member 12. Consequently, since it is enough to manufacture one kind of die molded part when plug sockets corresponding to various lengths of plug holes 2 are manufactured, productivity and cost performance of the ignition coil are improved. COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation: 要解决的问题为了解决由于对应于不同长度的模制部件需要制造以便处理各种发动机头塞头孔长度而导致生产率和成本性能延迟的问题。 解决方案：在极部分10b的外周表面和密封部件11的内周表面以及靴部件12的轴向方向中的至少一个上设置多个不规则部分。 因此，当密封构件11和靴部件12构建在极部10b上时，可以相对于极部10b的轴向选择不规则的接合位置。 也就是说，插头插座3的总长度的数量可以是通过将密封构件11的凹部的数量乘以靴子构件12的凹部的数量而提供的组合的数量。因此，由于足以制造一种 当制造对应于各种长度的插头孔2的插头插座时，模制部件被提高，点火线圈的生产率和成本性能得到改善。 版权所有（C）2009，JPO＆INPIT
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公开(公告)号：JP2004068749A
公开(公告)日：2004-03-04
申请号：JP2002231296
申请日：2002-08-08
Applicant: Denso Corp , 株式会社デンソー
Inventor： MIWA TETSUYA , MIZUTANI ATSUYA , HIRAMATSU HIROKI
Abstract: PROBLEM TO BE SOLVED: To make welding of a case unnecessary in an ignition device for an internal combustion engine having an ignition plug and an ignition coil integrated.
SOLUTION: A case 1 is provided with a primary case 100 located in a combustion chamber side and a secondary case 200 located in a side opposite to the combustion chamber side from the primary case 100. A flange 101 is formed on an end part of the side opposite to the combustion chamber side in the primary case 100 and a flange 201 is formed on an end part of the combustion chamber side in the secondary case 200. The flange 101 of the primary case 100 is arranged opposite to the end surface in the side opposite to the combustion chamber side on the flange 201 of the secondary case 200. Consequently, since the flange 101 of the primary case 100 is arranged opposite to the end surface in the side opposite to the combustion chamber side on the flange 201 of the secondary case 200, both flanges 101, 201 are engaged when a bolt 8 is threadedly engaged and the both cases 100, 200 are substantially integrated.
COPYRIGHT: (C)2004,JPOAbstract translation: 要解决的问题：在具有火花塞和点火线圈一体化的内燃机的点火装置中不需要外壳的焊接。 解决方案：壳体1设置有位于燃烧室侧的主壳体100和位于与主壳体100相对的燃烧室侧的一侧的次级壳体200.凸缘101形成在一端 在主壳体100中与燃烧室侧相对的一侧的一部分和在二次壳体200中的燃烧室侧的端部上形成凸缘201.初级壳体100的凸缘101布置成与端部 在第二壳体200的凸缘201上与燃烧室侧相对的一侧的表面。因此，由于主壳体100的凸缘101与法兰上的燃烧室侧的相反侧的端面相对地布置 201，当螺栓8螺纹接合并且两个壳体100,200基本一体化时，两个凸缘101,201接合。 版权所有（C）2004，JPO
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公开(公告)号：JP2004068748A
公开(公告)日：2004-03-04
申请号：JP2002231295
申请日：2002-08-08
Applicant: Denso Corp , 株式会社デンソー
Inventor： MIWA TETSUYA , MIZUTANI ATSUYA , HIRAMATSU HIROKI
Abstract: PROBLEM TO BE SOLVED: To carry out performance inspection of an ignition coil of an ignition device for an internal combustion engine having a ignition plug and an ignition coil integrated.
SOLUTION: Voltage generated by the ignition coil 3 is measured under a condition that a member to be inspected A including the ignition plug 2 and the ignition coil 3 is stored in an inspection case 100 without a grounded electrode. Consequently, voltage generated by the ignition coil 3 can be measured and performance inspection of the ignition coil 3 can be done.
COPYRIGHT: (C)2004,JPO
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