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1. 发明公开

EP3578804A1 SPARK PLUG ELECTRODE WEAR RATE DETERMINATION FOR A SPARK-IGNITED ENGINE 审中-实审
公开(公告)号：EP3578804A1
公开(公告)日：2019-12-11
申请号：EP18176511.6
申请日：2018-06-07
申请人： Caterpillar Energy Solutions GmbH
发明人： Shah, Darshit
IPC分类号： F02P17/12 , F02P5/152 , H01T13/60 , F02D35/02
摘要： A method for determining the wear rate of a spark plug electrode of an ignition system of an internal combustion engine comprises determining (100) a risetime number indicating the time required for raising the current and thereby the primary energy which is supplied to an ignition coil (54) of the spark plug (30) from an inactive level to a predetermined level, determining (200) an operating condition indicator configured to indicate an operating condition of the ignition system, determining (300) a wear rate of the spark plug electrode based on a difference of a first spark plug state indicator at a first time instance and a second spark plug state indicator at a second time instance, wherein the first time instance and the second time instance are separated by a predetermined time interval, wherein the spark plug state indicator is determined as a value based on the risetime number and the operating condition indicator.

2. 发明公开

EP3273554A1 SPARK PLUG PRODUCTION METHOD, SPARK PLUG PRODUCTION DEVICE AND ASSEMBLY INSPECTION METHOD 有权转让
标题翻译：火花塞制造方法，火花塞制造装置和组装检查方法
公开(公告)号：EP3273554A1
公开(公告)日：2018-01-24
申请号：EP16764500.1
申请日：2016-03-17
申请人： NGK Spark Plug Co., Ltd.
发明人： OKUDA, Masafumi , OTSUKI, Toshiyuki , NISHIYAMA, Kanako
IPC分类号： H01T21/02 , H01T13/60
CPC分类号： H01T13/60 , F02P17/12 , H01T13/36 , H01T21/02
摘要： An object of the invention is to shorten the production time of spark plugs. A method of producing a spark plug comprises (a) a step of combining a metallic shell and an insulator such that the metallic shell covers the outer circumferential surface of a forward end side of the insulator so as to obtain an assembly; (b) a step of inserting a portion of the assembly on its forward end side into a pressure container through an opening of the pressure container; (c) a step of bringing an insulating member into contact with the outer circumferential surface of a base side portion of the insulator over the entire circumference thereof in a state in which the axial line of the assembly and the axial line of the opening coincide with each other, and pressing the assembly so as to close the opening by the assembly; and (d) a step of pressurizing the interior of the pressure container and applying a predetermined voltage between the terminal electrode and the metallic shell, wherein the step (b) includes a step of inserting the portion of the assembly on the forward end side into the pressure container such that a gap formed between the outer circumferential surface of the insulator and the inner circumferential surface of the metallic shell on the forward end side of the assembly is disposed in the pressure container.
摘要翻译：本发明的目的是缩短火花塞的生产时间。一种火花塞的制造方法，其特征在于，包括以下工序：（a）将金属壳与绝缘体组合，以使金属壳覆盖绝缘体的前端侧的外周面而得到组装体的工序; （b）通过压力容器的开口将组件的一部分在其前端侧插入压力容器的步骤; （c）在组装体的轴线与开口的轴线一致的状态下使绝缘部件与绝缘体的基部侧部的外周面在整个圆周上接触的步骤彼此压紧组件以便通过组件关闭开口; （d）对上述压力容器内进行加压，在上述端子电极与上述主体配件之间施加规定的电压的工序，上述工序（b）包括将上述组装体的前端侧的部分插入所述压力容器使得在所述压力容器中设置在所述组件的所述前端侧上的所述绝缘体的外周面与所述金属壳体的内周面之间形成的间隙。

3. 发明公开

EP2683041A4 SPARK PLUG MANUFACTURING METHOD 有权转让
公开(公告)号：EP2683041A4
公开(公告)日：2015-03-11
申请号：EP12754851
申请日：2012-01-12
申请人： NGK SPARK PLUG CO
发明人： HIROSE KAZUMICHI , KURONO HIROKAZU , HONDA TOSHITAKA
IPC分类号： H01T13/60 , H01T21/02
CPC分类号： H01T21/02 , H01T13/60
摘要： An object is to provide a spark plug manufacturing method capable of providing a spark plug equipped with an insulator having dielectric strength by means of judging whether or not the insulator has a defect. The spark plug manufacturing method of the present invention is characterized by including a defect judgment step of judging whether or not the insulator has a defect, by means of generation of an electric potential difference between the center electrode and the metallic shell under conditions such that an assembly of the center electrode, the metallic shell, and the insulator is disposed within a pressure vessel, a high-pressure atmosphere higher in pressure than the atmospheric pressure is established within the pressure vessel, a space which allows the presence of insulating oil is a space surrounded by the packing, the metallic shell, the insulator, and an imaginary plane containing a forward end surface of the metallic shell, and the insulating oil is present at least in a region of the space where the distance between the ledge and the insulator becomes shortest.

4. 发明授权

EP3051640B1 METHOD FOR INSPECTING INSULATOR FOR SPARK PLUG 有权转让
公开(公告)号：EP3051640B1
公开(公告)日：2019-11-20
申请号：EP16153421.9
申请日：2016-01-29
申请人： NGK Spark Plug Co., Ltd.
发明人： Hirose, Kazumichi , Hashiguchi, Yoshiaki , Nakama, Shou
IPC分类号： H01T13/60

5. 发明公开

EP3520184A1 PROCEDE DE TEST D'UNE BOUGIE D'ALLUMAGE A SEMI-CONDUCTEUR 有权
公开(公告)号：EP3520184A1
公开(公告)日：2019-08-07
申请号：EP17783944.6
申请日：2017-09-27
申请人： Safran Aircraft Engines
发明人： STIFANIC, David, Gino , BERTON, Joël, Yvan, Marcel, Robert , HAUSSAIRE, Denis, Robert, Gaston
IPC分类号： H01T13/58 , H01T13/60 , H01T13/38 , H01T13/52

6. 发明公开

EP3148021A1 SPARK PLUG 有权转让
标题翻译：火花塞
公开(公告)号：EP3148021A1
公开(公告)日：2017-03-29
申请号：EP16190401.6
申请日：2016-09-23
申请人： NGK Spark Plug Co., Ltd.
发明人： Yoshida, Haruki , Isasa, Jumpei , Honda, Toshitaka , Yokoyama, Yutaka , Tanaka, Kuniharu , Araki, Nobuyoshi , Kon, Toshiki
IPC分类号： H01T13/38 , H01T13/60 , H01T21/02
摘要： A spark plug 1 includes an insulator 3, a center electrode 4, a metallic shell 7, and a ground electrode 8. The insulator contains not less than 90.0 mass% and not greater than 98.1 mass% of Al 2 O 3 with respect to a total mass of elements, as reduced to oxides, contained in the insulator, and has a porosity not greater than 5%. Assuming that a porosity of the insulator after a heat treatment is B, a difference (B-A) of the porosities before and after the heat treatment is not greater than 3.5%. In the heat treatment, the insulator is placed in a furnace, and a temperature in the furnace is increased from a room temperature to 1400°C at a temperature increase rate of 7°C/min and is held at 1400°C for 30 minutes, and thereafter, the temperature is decreased from 1400°C to 400°C at a temperature decrease rate of 10°C or less per 5 minutes and is decreased to the room temperature.
摘要翻译：火花塞1具备绝缘体3，中心电极4，主体配件7以及接地电极8.绝缘体含有相对于总量为90质量％以上且98.1质量％以下的Al 2 O 3 元素被还原成氧化物，包含在绝缘体中，并且具有不大于5％的孔隙率。假设热处理后的绝缘体的孔隙率为B，则热处理前后的孔隙率之差（B-A）不大于3.5％。在热处理中，将绝缘体放入炉内，使炉内温度以7℃/分钟的升温速度从室温升温至1400℃，在1400℃保持30分钟然后，以每5分钟10℃以下的降温速度将温度从1400℃降低至400℃，并降低至室温。

8. 发明公开

EP4040616A1 VERSCHLEISSANALYSE AN ZÜNDSYSTEMEN 审中-实审
公开(公告)号：EP4040616A1
公开(公告)日：2022-08-10
申请号：EP22154788.8
申请日：2022-02-02
申请人： Karlsruher Institut für Technologie
发明人： Michler, Tobias , Toedter, Dr. Olaf
IPC分类号： H01T13/58 , H01T13/39 , H01T13/60
摘要： Die Erfindung betrifft eine Vorrichtung zur Verschleißanalyse zueinander beabstandeter Zündelektroden, mit einer Strom- und/oder Spannungsquelle und mit mindestens zwei mit der Strom- und/oder Spannungsquelle elektrisch verbundenen, ein Zündsystem bildenden Zündelektroden sowie ein Verfahren zur Verschleißanalyse an Zündelektroden mittels einer derartigen Vorrichtung. Jede der Zündelektroden weist zumindest in einem an eine Zündfläche angrenzenden Bereich einen individuellen metallischen Werkstoff der dritten bis zwölften Nebengruppe mit stabilen Isotopen auf. Außerdem ist eine mit einer Datenerfassungsvorrichtung mittels Datenleitungen verbundene Bildzerlegungs- und Umwandlungsgruppe auf den mittels der Zündelektroden begrenzten Zündraum des Zündsystems ausgerichtet.
Mit der vorliegenden Erfindung wird der Verschleiß von Zündelektroden ohne Zerstörung des Zündsystems zeitnah den einzelnen Zündelektroden zugeordnet.

9. 发明授权

EP3520184B1 PROCEDE DE TEST D'UNE BOUGIE D'ALLUMAGE A SEMI-CONDUCTEUR 有权
公开(公告)号：EP3520184B1
公开(公告)日：2020-07-29
申请号：EP17783944.6
申请日：2017-09-27
申请人： Safran Aircraft Engines
发明人： STIFANIC, David, Gino , BERTON, Joël, Yvan, Marcel, Robert , HAUSSAIRE, Denis, Robert, Gaston
IPC分类号： H01T13/58 , H01T13/60 , H01T13/38 , H01T13/52

10. 发明授权

EP3436687B1 VERFAHREN ZUM BETREIBEN EINES MIT EINEM HOCHSETZSTELLER AUSGESTATTETEN ZÜNDSYSTEMS 有权转让
公开(公告)号：EP3436687B1
公开(公告)日：2020-01-22
申请号：EP17702081.5
申请日：2017-01-27
申请人： Robert Bosch GmbH
发明人： SKOWRONEK, Tim , PAWLAK, Thomas , BITTNER, Felix
IPC分类号： F02P9/00 , F02P17/12 , G01M15/11 , F02P5/152 , H01T15/00 , H01T13/60 , F02P15/10 , F02D35/02 , F02P3/04 , F02P3/08 , F02P15/08

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