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1. 发明专利

JP2013004433A Ignition device, ignition system, and plasma jet spark plug 有权
标题翻译：点火装置，点火系统和等离子喷射火花塞
公开(公告)号：JP2013004433A
公开(公告)日：2013-01-07
申请号：JP2011136844
申请日：2011-06-21
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： YAMAMURA TADASHI , KAMEDA HIROYUKI , NAKANO TEIJO , KASAHARA DAISUKE , NISHIDA MASAHIRO
IPC分类号： H01T13/20 , F02P3/01 , F02P13/00 , H01T13/32 , H01T13/46 , H01T13/52 , H01T15/00
摘要： PROBLEM TO BE SOLVED: To drastically improve ignitability without deteriorating durability.SOLUTION: An ignition device 71 is used for a spark plug 1 having an insulator 2 having a shaft hole 4 extending in a direction of an axis line CL1, a main electrode 5 inserted in the shaft hole 4, a main ground electrode 27 forming a first gap 29 between it and the main electrode 5, and a cavity part 28 formed by an inner periphery of the shaft hole 4 and a tip face of the main electrode 5. The ignition device 71 comprises an auxiliary electrode 31 whose tip is positioned nearer a tip end in the axis line CL1 than the main ground electrode 27 while the spark plug 1 is mounted to an internal combustion engine EN, and an auxiliary ground electrode 32 forming a second gap 33 between it and the auxiliary electrode 31. Also, the second gap 33 passes on the axis line CL1, and a voltage lower than that applied to the first gap 29 is applied to the second gap 33.
摘要翻译：要解决的问题：在不劣化耐久性的情况下大幅提高点火性。解决方案：点火装置71用于具有绝缘体2的火花塞1，绝缘体2具有沿着轴线CL1的方向延伸的轴孔4，插入轴孔4中的主电极5，主接地电极 27在其与主电极5之间形成第一间隙29，以及由轴孔4的内周和主电极5的前端面形成的空腔部28.点火装置71包括辅助电极31，辅助电极31的尖端位于比主接地电极27更靠近轴线CL1的末端，而火花塞1安装在内燃机EN上，辅助接地电极32在其与辅助电极31之间形成第二间隙33。此外，第二间隙33在轴线CL1上通过，并且低于施加到第一间隙29的电压的电压施加到第二间隙33.版权所有：（C）2013，JPO和INPIT

2. 发明专利

JP2011210709A Plasma-jet ignition plug and ignition system 有权
标题翻译：等离子体喷射点火和点火系统
公开(公告)号：JP2011210709A
公开(公告)日：2011-10-20
申请号：JP2011037820
申请日：2011-02-24
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： KAMEDA HIROYUKI , SATO YOSHIKUNI , NAKANO TEIJO , YAMAMURA TADASHI , KASAHARA DAISUKE
IPC分类号： H01T13/52 , F02P3/01 , F02P13/00 , H01T13/20
CPC分类号： H01T13/50 , H01T13/20
摘要： PROBLEM TO BE SOLVED: To maintain excellent ignitability over a long period of time.SOLUTION: A plasma jet ignition plug 1 includes an insulator 2 having an axial hole 4 extending therethrough in the direction of an axis CL1, a center electrode 5 inserted into the axial hole 4, and a ground electrode 27 disposed frontward of the front end of the insulator 2. The insulator 2 has a cavity 31 defined by the inner circumferential surface of the axial hole 4 and the front end surface of the center electrode 5 and opens frontward. The ground electrode 27 has a through-hole 28 for establishing communication between the cavity 31 and an outside. A front end portion of the center electrode 5 is formed into a taper portion 51 whose diameter reduces frontward in the direction of the axis CL1. The outside diameter of a front end of the taper portion 31 is smaller than the diameter of the through-hole 28. The cavity 31 has a substantially constant inside diameter along the direction of the axis CL1. Assuming that the inside diameter of the cavity 31 is DC (mm) and the length of the cavity 31 in the direction of the axis CL1 is LC (mm), the expression 0.5≤LC/DC
摘要翻译：要解决的问题：长时间保持良好的点火性。解决方案：等离子体火花塞1包括绝缘体2，绝缘体2具有沿轴线CL1的方向延伸穿过的轴向孔4，插入到中心电极5中的中心电极5 轴孔4和设置在绝缘体2的前端前方的接地电极27.绝缘体2具有由轴孔4的内周面和中心电极5的前端面形成的空腔31，向前。接地电极27具有用于在空腔31和外部之间建立连通的通孔28。中心电极5的前端部形成为直径在轴线CL1的方向上向前减小的锥形部51。锥形部分31的前端的外径小于通孔28的直径。空腔31沿着轴线CL1的方向具有基本上恒定的内径。假设空腔31的内径为DC（mm），并且空腔31在轴线CL1的方向上的长度为LC（mm），则满足表达式0.5≤LC/ DC <1.0。

3. 发明专利

JP2012241529A Ignition device and ignition system 有权
标题翻译：点火装置和点火系统
公开(公告)号：JP2012241529A
公开(公告)日：2012-12-10
申请号：JP2011109200
申请日：2011-05-16
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAKANO TEIJO
IPC分类号： F02P3/01 , H01T13/20 , H01T13/52
摘要： PROBLEM TO BE SOLVED: To improve energy efficiency to improve ignitability.SOLUTION: An ignition device 71 is used in an ignition plug 1 including a center electrode 5, a ground electrode 27, and a cavity portion 28 for surrounding at least part of a periphery of a gap 29 formed between both electrodes 5 and 27 to form a discharge space. The ignition device 71 includes: a voltage applying part 31 for applying voltage to the gap 29; a power input part 41 having a capacitor 42 and a power source device PS for inputting electric power to the gap 29; an inflow prevention diode 43 connected in series between the ignition plug 1 and the power input part 41 for preventing current from flowing from the voltage applying part 31 into the power input part 41; and an inductor 44 connected in series between the inflow prevention diode 43 and the power input part 41. The ignition device 71 also includes a re-charging diode 51 for re-charging the capacitor 42 by a backward current of the inductor 44 caused in association with the power input from the capacitor 42 to the ignition plug 1.
摘要翻译：要解决的问题：提高能源效率以提高点火性。解决方案：点火装置71用于包括中心电极5，接地电极27和空腔部分28的火花塞1，用于围绕形成在两个电极5和两个电极5之间的间隙29的周边的至少一部分 27形成放电空间。点火装置71包括：向间隙29施加电压的电压施加部31; 具有电容器42的电力输入部41和用于向间隙29输入电力的电源装置PS; 串联连接在火花塞1和电源输入部41之间的流入防止二极管43，用于防止电流从电压施加部31流入电力输入部41; 以及在流入防止二极管43和电源输入部41之间串联连接的电感器44.点火装置71还包括用于通过电感器44的反向电流使电容器42再次充电的再充电二极管51 从电容器42到火花塞1的电力输入。版权所有：（C）2013，JPO＆INPIT

4. 发明专利

JP2012162990A Ignition system 审中-公开
标题翻译：点火系统
公开(公告)号：JP2012162990A
公开(公告)日：2012-08-30
申请号：JP2011021567
申请日：2011-02-03
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： KASAHARA DAISUKE , KAMEDA HIROYUKI , NAKANO TEIJO , YAMAMURA TADASHI , NISHIDA MASAHIRO
IPC分类号： F02P3/01 , F02P13/00 , F02P15/00 , H01T15/00
摘要： PROBLEM TO BE SOLVED: To provide an ignition system that can identify an abnormal aspect and occurrence factors of abnormality when abnormality occurs in spark discharge or plasma generation, and can carry out an appropriate process responding to the abnormal aspect and the occurrence factor of the abnormality.SOLUTION: The ignition system 101 includes an ignition plug 1 having a gap 29, a voltage applying part 31 and a power feeding part 41, and can generate spark discharge by applying a voltage from the voltage applying part 31 to the gap 29 and as well as can generate plasma by feeding electric power to the gap 29 by the power feeding part 41. The ignition system 101 includes: a voltage measuring part 51 measuring a voltage value of the gap 29; a state determining part 52 determining at least one state between the spark discharge and the plasma generation on the basis of the voltage value; and a control part 53 that can control at least one of the voltage applying part 31 and the power feeding part 41 on the basis of the determination by the state determining part 52.
摘要翻译：要解决的问题：提供一种点火系统，其可以在火花放电或等离子体产生时发生异常时识别异常方面和异常发生因素，并且可以对异常方面和发生因素进行适当的处理的异常。
解决方案：点火系统101包括具有间隙29的点火开关1，电压施加部31和供电部41，并且可以通过从电压施加部31施加电压而产生火花放电到间隙29 并且能够通过由供电部41向间隙29供给电力而产生等离子体。点火系统101包括：测量间隙29的电压值的电压测量部51; 状态确定部件52基于电压值确定火花放电和等离子体产生之间的至少一个状态; 以及控制部53，其可以基于状态判定部52的判断来控制电压施加部31和供电部41中的至少一个。（C）2012，JPO＆INPIT

5. 发明专利

JP2012099303A Spark system and spark method 有权
标题翻译：火花系统和火花方法
公开(公告)号：JP2012099303A
公开(公告)日：2012-05-24
申请号：JP2010245120
申请日：2010-11-01
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： KAMEDA HIROYUKI , NAKANO TEIJO , YAMAMURA TADASHI , KASAHARA DAISUKE , NISHIDA MASAHIRO
IPC分类号： H01T15/00 , F02P3/00 , F02P3/01 , F02P13/00 , H01T13/32 , H01T13/39 , H01T13/54
CPC分类号： H01T13/50
摘要： PROBLEM TO BE SOLVED: To improve ignitability without bad influences in view of channeling and the like.SOLUTION: A spark system 101 comprises a spark plug 1, a discharging power source 41, and an energy inputting part 51. The spark plug 1 has an electric insulator 2 having a shaft hole 4, a center electrode 5 inserted in the shaft hole 4, a ground electrode 27 forming a gap 29 between it and the center electrode 5, and a cavity part 28 formed by an inner periphery of the shaft hole and a tip surface of the center electrode 5. The discharging power source 41 applies a voltage to the gap 29 and generates spark discharge, and the energy inputting part 51 inputs power to the gap 29 and creates plasma in the cavity part 28. The energy inputting part 51 inputs the power to the gap 29 plural times corresponding to one spark discharging. During one spark discharging, a power inputting start timing after second time is after a power inputting completion timing of the previous time, and within 50 μs from the inputting completion timing.
摘要翻译：要解决的问题：为了提高点火性，而不考虑沟道等的不良影响。火花塞系统101包括火花塞1，放电电源41和能量输入部51.火花塞1具有电绝缘体2，电绝缘体2具有轴孔4，中心电极5插入轴孔4，在其与中心电极5之间形成间隙29的接地电极27和由轴孔的内周形成的空腔部28和中心电极5的前端面。放电电源41适用到间隙29的电压并产生火花放电，能量输入部51向间隙29输入电力，并在空腔部28中产生等离子体。能量输入部51将间歇29的电力输入到与一个火花对应的多次放电。在一次火花放电期间，第二次之后的电力输入开始定时是在上一次的电力输入完成定时之后，并且在距离输入完成定时的50μs内。版权所有（C）2012，JPO＆INPIT

6. 发明专利

JP2013108465A Igniter and ignition system 有权
标题翻译： IGNITER和点火系统
公开(公告)号：JP2013108465A
公开(公告)日：2013-06-06
申请号：JP2011255696
申请日：2011-11-24
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAKANO TEIJO
IPC分类号： F02P15/10 , F02P15/00
摘要： PROBLEM TO BE SOLVED: To secure sufficient durability of a spark plug, while improving ignitability.SOLUTION: An igniter 31 includes: an ignition coil 41 having a primary coil 42 and a secondary coil 43 connected to the spark plug 1 and generating secondary voltage in the secondary coil 43 by cutting off a primary current flowing to the primary coil 42; and a capacitor 61 connected in parallel to the spark plug 1 between the secondary coil 43 and the spark plug 1, charged by impressing the secondary voltage and generating spark discharge by the spark plug 1 by discharge of itself. The igniter 31 generates a plurality of times of spark discharge by the spark plug 1 in response to repetition of charge and discharge in the capacitor 61. A current-carrying control part 51 corresponding to a spark discharge stopping part can stop the plurality of times of spark discharge in the middle in the spark plug 1 by passing an electric current again to the primary coil 42.
摘要翻译：要解决的问题：为了确保火花塞的足够的耐久性，同时提高点火性。点火器31包括：点火线圈41，其具有连接到火花塞1的初级线圈42和次级线圈43，并且通过切断流过初级线圈的一次电流而在次级线圈43中产生二次电压 42; 以及与次级线圈43和火花塞1之间的火花塞1并联连接的电容器61，通过施加二次电压进行充电，并通过自身放电产生火花塞1的火花放电。点火器31响应于电容器61中的重复充放电而通过火花塞1产生多次火花放电。对应于火花放电停止部的通电控制部51可以停止多次通过再次将电流传给初级线圈42，在火花塞1的中间发生火花放电。（C）2013，JPO＆INPIT

7. 发明专利

JP2012219707A Ignition device and ignition system 有权
标题翻译：点火装置和点火系统
公开(公告)号：JP2012219707A
公开(公告)日：2012-11-12
申请号：JP2011085857
申请日：2011-04-08
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： YAMADA TATSUNORI , NAKANO TEIJO
IPC分类号： F02P3/01 , H01T13/52 , H01T13/54
摘要： PROBLEM TO BE SOLVED: To make high ignitability and a long service lifetime of a plasma jet ignition plug compatible with each other.SOLUTION: An ignition device 31 is configured to be used in a plasma jet ignition plug 1 and includes: a voltage applying part 41 for applying a voltage to a gap 29 of the ignition plug 1; and a capacitor 51 connected in parallel to the ignition plug 1 between the ignition plug 1 and the voltage applying part 41. Electric charges stored in the capacitor 51 are inputted to the gap 29 by the voltage applying part 41 in order to generate a capacitive discharge in a cavity 28. The capacitance of the capacitor 51 can be changed to two types of capacitance values different in magnitude. The ignition device also includes a capacitance control part 62 configured to switch between a first ignition mode and a second ignition mode, in which a capacitive discharge current is smaller than that of in the first ignition mode, by changing the capacitance of the capacitor 51.
摘要翻译：要解决的问题：使等离子体喷火火花塞的高点火性和长使用寿命相互兼容。点火装置31被配置为用于等离子体喷射火花塞1，并且包括：施加电压到电火花塞1的间隙29的电压施加部41; 以及与火花塞1和施加电压部分41之间的火花塞1并联连接的电容器51.存储在电容器51中的电荷通过电压施加部分41输入到间隙29，以产生电容放电在空腔28中。电容器51的电容可以改变为不同大小的两种类型的电容值。点火装置还包括电容控制部件62，其被配置为通过改变电容器51的电容来在第一点火模式和第二点火模式之间切换，其中电容放电电流小于第一点火模式的电容放电电流。版权所有（C）2013，JPO＆INPIT

8. 发明专利

JP2012186146A Plasma-jet spark plug, and ignition system 有权
标题翻译：等离子体喷射喷枪和点火系统
公开(公告)号：JP2012186146A
公开(公告)日：2012-09-27
申请号：JP2012006656
申请日：2012-01-17
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： KAMEDA HIROYUKI , NAKANO TEIJO , YAMAMURA TADASHI
IPC分类号： H01T13/20 , F02P3/01 , F02P13/00 , H01T13/05 , H01T13/52
CPC分类号： H01T13/50
摘要： PROBLEM TO BE SOLVED: To improve the plasma generation efficiency by increasing the capacitive-discharge current without changing the shape of a spark plug significantly or providing a capacitor outside.SOLUTION: A spark plug 1 comprises an electrical insulator 2 having an axial hole 4, a center electrode 5, and a main fitting 3, and has a cavity portion 28 formed by the inner surface of the axial hole 4 and the tip surface of the center electrode 5. At least a portion of at least one of the outer surface of the electrical insulator 2 facing the inner surface of the main fitting 3, and the inner surface of the electrical insulator 2 facing the outer surface of the center electrode 5, is provided with a conductive layer 31 or 32 composed of a conductive material, the conductive layer 31 on the outer surface of the electrical insulator 2 is electrically connected to a ground electrode 27, and the conductive layer 32 on the inner surface of the electrical insulator 2 is electrically connected to the center electrode 5.
摘要翻译：要解决的问题：通过在不改变火花塞的形状或提供电容器的情况下增加电容放电电流来提高等离子体产生效率。解决方案：火花塞1包括具有轴向孔4，中心电极5和主配件3的电绝缘体2，并且具有由轴向孔4的内表面形成的空腔部分28和尖端中心电极5的表面。电绝缘体2的外表面中的至少一个的面向主配件3的内表面的部分和电绝缘体2的内表面相对于中心的外表面电极5设置有由导电材料构成的导电层31或32，电绝缘体2的外表面上的导电层31电连接到接地电极27，导电层32的内表面上的导电层32 电绝缘体2电连接到中心电极5.版权所有（C）2012，JPO＆INPIT

9. 发明专利

JP2010257949A Plasma-jet spark plug 有权
标题翻译：等离子喷射枪
公开(公告)号：JP2010257949A
公开(公告)日：2010-11-11
申请号：JP2010059396
申请日：2010-03-16
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAKANO TEIJO , SATO YOSHIKUNI , KAMEDA HIROYUKI , YAMAMURA TADASHI , KASAHARA DAISUKE
IPC分类号： H01T13/52 , F02P13/00 , H01T13/20 , H01T15/00
CPC分类号： F02P9/007 , H01T13/50
摘要： PROBLEM TO BE SOLVED: To restrain the radiation of noise while allowing application of sufficiently large current for generation of plasma to a spark discharge gap upon ignition by a plasma jet ignition plug.
SOLUTION: A wire-wound resistor 21 having an inductance of 1μH to 100μH inclusive and a resistance of 1 Ω or less is provided on at least one of a center electrode 20 and a ground electrode 30. The wire-wound resistor 21 restrains current which is generated by the influence of stray capacitance present in a plasma jet ignition plug, thereby reducing noise.
COPYRIGHT: (C)2011,JPO&INPIT

10. 发明专利

JP2009030554A Ignition device 有权
标题翻译：点火装置
公开(公告)号：JP2009030554A
公开(公告)日：2009-02-12
申请号：JP2007196602
申请日：2007-07-27
申请人： Ngk Spark Plug Co Ltd , 日本特殊陶業株式会社
发明人： NAKANO TEIJO
IPC分类号： F02P3/04 , F02P11/00 , F02P17/00
摘要： PROBLEM TO BE SOLVED: To provide an ignition device at a low cost with high reliability of durability provided with a current detection means on a primary coil side not requiring a high voltage resistance component.
SOLUTION: On the primary coil 51 side of an ignition coil 5, a closed loop circuit 25 connecting a thyristor 23 and a current detection section 6 in series is constructed. After application of an igniting high voltage Vd on an ignition plug 9 for generating spark discharge, the closed loop circuit 25 is closed with the gate signal Vb of the thyristor 23 as H, and then, a current Ib is passed through the closed loop circuit 25. The current detection section 6 detects the current Ib, converts the current into a voltage, and inputs it in an ECU 8 as a voltage value Vc. This voltage value Vc is varied according to a dielectric breakdown voltage value between the central electrode 91 and grounding electrode of the ignition plug 9, and is usable for detection of abnormality.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供低成本的点火装置，在不需要高耐电压部件的初级线圈侧具有电流检测装置，具有高可靠性的耐久性。解决方案：在点火线圈5的初级线圈51侧，构成串联连接晶闸管23和电流检测部6的闭环回路25。在用于产生火花放电的火花塞9上施加点火高电压Vd之后，闭环回路25以晶闸管23的栅极信号Vb为闭合，然后电流Ib通过闭环回路电流检测部6检测电流Ib，将电流转换成电压，将其作为电压值Vc输入ECU8。该电压值Vc根据中心电极91和火花塞9的接地电极之间的绝缘击穿电压值而变化，可用于检测异常。版权所有（C）2009，JPO＆INPIT

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