公开(公告)号：US07605526B2

公开(公告)日：2009-10-20

申请号：US11654651

申请日：2007-01-18

申请人： Teiji Ishinada ,  Tsunenobu Hori

发明人： Teiji Ishinada ,  Tsunenobu Hori

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  H01T13/32 ,  H01T13/39

摘要： A spark plug for an internal combustion engine is disclosed having a metal shell having an outer periphery formed with a mounting thread, a porcelain insulator fixedly secured to the metal shell on a central axis thereof, a center electrode retained within the porcelain insulator along a central axis thereof with a distal end located outside the porcelain insulator, and a ground electrode joined to the metal shell and having an end associated with the distal end of the center electrode to define therebetween a spark discharge gap. The ground electrode includes a facing surface intersecting the central axis of the center electrode and having a width equal to or less than 1.6 mm.

摘要翻译： 公开了一种用于内燃机的火花塞，其具有金属外壳，其外周形成有安装螺纹，瓷绝缘体在其中心轴线上固定地固定到金属壳体上，中心电极沿着中心线保持在瓷绝缘体内 其远端位于瓷绝缘体外部，接地电极接合到金属外壳并具有与中心电极的远端相关联的端部，以在其间限定火花放电间隙。 接地电极包括与中心电极的中心轴线相交并具有等于或小于1.6mm的宽度的面对表面。

公开(公告)号：US20090165440A1

公开(公告)日：2009-07-02

申请号：US12224674

申请日：2007-09-10

申请人： Hiroshi Sawada ,  Tsunenobu Hori

发明人： Hiroshi Sawada ,  Tsunenobu Hori

IPC分类号： F01N11/00 ,  G01M15/10

CPC分类号： B01D53/9495 ,  B01D53/9409 ,  F01N3/0842 ,  F01N11/007 ,  F01N2550/03 ,  F01N2570/14 ,  Y02A50/2344 ,  Y02T10/47

摘要： A storage reduction NOx catalyst is disposed in an exhaust passage for an internal combustion engine. A NOx sensor is disposed upstream of the NOx catalyst. An inflow NOx amount, which is the amount of NOx that has flown into the NOx catalyst, is calculated by accumulating the output of the NOx sensor. A total storage amount, which is the sum of the amounts of oxygen and NOx stored in the NOx catalyst, is calculated based on an output generated by an exhaust gas sensor disposed downstream of the NOx catalyst when rich spike is being executed. The deterioration of the NOx catalyst is determined based on the inflow NOx amount and the total storage amount.

摘要翻译： 在内燃机的排气通道中设置有储存还原NOx催化剂。 NOx传感器设置在NOx催化剂的上游。 通过累积NOx传感器的输出来计算作为流入NOx催化剂的NOx的量的流入NOx量。 基于当执行富穗时，由设置在NOx催化剂下游的排气传感器产生的输出计算总存储量，其是存储在NOx催化剂中的氧气和NOx的总和的总量。 NOx催化剂的劣化是根据流入NOx量和总储存量来确定的。

公开(公告)号：US20070188065A1

公开(公告)日：2007-08-16

申请号：US11654651

申请日：2007-01-18

申请人： Teiji Ishinada ,  Tsunenobu Hori

发明人： Teiji Ishinada ,  Tsunenobu Hori

IPC分类号： H01T13/20

CPC分类号： H01T13/20 ,  H01T13/32 ,  H01T13/39

摘要： A spark plug for an internal combustion engine is disclosed having a metal shell having an outer periphery formed with a mounting thread, a porcelain insulator fixedly secured to the metal shell on a central axis thereof, a center electrode retained within the porcelain insulator along a central axis thereof with a distal end located outside the porcelain insulator, and a ground electrode joined to the metal shell and having an end associated with the distal end of the center electrode to define therebetween a spark discharge gap. The ground electrode includes a facing surface intersecting the central axis of the center electrode and having a width equal to or less than 1.6 mm.

摘要翻译： 公开了一种用于内燃机的火花塞，其具有金属外壳，其外周形成有安装螺纹，瓷绝缘体在其中心轴线上固定地固定到金属壳体上，中心电极沿着中心线保持在瓷绝缘体内 其远端位于瓷绝缘体外部，接地电极接合到金属外壳并具有与中心电极的远端相关联的端部，以在其间限定火花放电间隙。 接地电极包括与中心电极的中心轴线相交并具有等于或小于1.6mm的宽度的面对表面。

公开(公告)号：US07199511B2

公开(公告)日：2007-04-03

申请号：US10901042

申请日：2004-07-29

申请人： Tsunenobu Hori

发明人： Tsunenobu Hori

IPC分类号： H01T13/20

CPC分类号： H01T21/02 ,  H01T13/39 ,  Y10T29/5195

摘要： A spark plug is provided which ensures the reliability of a weld between a noble metal chip and a ground electrode as well as higher durability and ignitability of fuel. The ground electrode is joined to a metal shell, after which the noble metal chip is laser-welded to the ground electrode. The laser welding is achieved by emitting laser beams around an interface between the noble metal chip and the ground electrode outside a given angular range within which the metal shell will be an obstruction to the traveling of the laser beams. Specifically, the laser beams are emitted without any optical interference with the metal shell. This permits the angle between the orientation of each of the laser beams and the surface of the ground electrode to be minimized regardless of the metal shell, thus ensuring a desired depth of the fused portions in the noble metal chip.

公开(公告)号：US07170219B2

公开(公告)日：2007-01-30

申请号：US11197747

申请日：2005-08-05

申请人： Tsunenobu Hori ,  Shinichi Okabe

发明人： Tsunenobu Hori ,  Shinichi Okabe

IPC分类号： H01J13/20

CPC分类号： H01T13/32 ,  H01T13/467

摘要： A spark plug according to the present invention includes a metal shell, an insulator, a cylindrical center electrode, a first ground electrode, and a second ground electrode. The first ground electrode is aligned with the center electrode in the axial direction of the center electrode to form a first spark gap, across which normal sparks are discharged when the insulator is not fouled with carbon. The second ground electrode is aligned with the center electrode in the radial direction of the center electrode to form a second spark gap, across which side sparks are discharged when the insulator is fouled with carbon. The spark plug has an improved structure where dimensional parameters A, T, B, C, L, D, and E are specified to be in suitable ranges that are determined through experimental investigation. The improved structure ensures a high ignition capability and a long service life of the spark plug.

摘要翻译： 根据本发明的火花塞包括金属壳，绝缘体，圆柱形中心电极，第一接地电极和第二接地电极。 第一接地电极在中心电极的轴向上与中心电极对准，以形成第一火花隙，当绝缘体不被碳污染时，正常火花放电。 第二接地电极在中心电极的径向上与中心电极对准以形成第二火花隙，当绝缘体被碳污染时，第二接地电极在该侧面火花放电。 火花塞具有改进的结构，其中尺寸参数A，T，B，C，L，D和E被规定在通过实验调查确定的合适范围内。 改进的结构确保了火花塞的高点火能力和较长的使用寿命。

公开(公告)号：US07105990B2

公开(公告)日：2006-09-12

申请号：US10408089

申请日：2003-04-08

申请人： Masamichi Shibata ,  Tsunenobu Hori

发明人： Masamichi Shibata ,  Tsunenobu Hori

IPC分类号： H01T13/20

CPC分类号： H01T13/39

摘要： Carbon fouling adhered on an insulator tip of a spark plug of the present invention is burnt down by a leak current during an inductive discharge period, due to a promoted ionization before beginning a capacitive discharge, in such an arrangement of a central electrode that a border portion of a body and narrowed portion is positioned in an insulator. The carbon burning-down effect is further improved by a narrow projection provided with an earth electrode, due to increased inductive energy and extended inductive discharge time period. This is because an electric field in a discharge gap is raised, thereby decreasing a discharge voltage and suppressing an energy emitted from a coil during the capacitive discharge.

公开(公告)号：US06891318B2

公开(公告)日：2005-05-10

申请号：US10218513

申请日：2002-08-15

申请人： Tsunenobu Hori ,  Akihiko Mizutani ,  Hironori Osamura ,  Kozo Takamura

发明人： Tsunenobu Hori ,  Akihiko Mizutani ,  Hironori Osamura ,  Kozo Takamura

IPC分类号： H01T13/20 ,  H01T13/39 ,  H01T21/02

CPC分类号： H01T21/02 ,  H01T13/39

摘要： An improved structure of a spark plug which provides higher durability of a joint of a noble metal chip to an electrode such as a center or a ground electrode. The joint is formed by laser welding. A fused portion made of materials of the noble metal chip and the electrode fused together by the laser welding is formed in the joint so that it may continue over at least half a circumference of a contact between the noble metal chip and the electrode without interfaces of welds, thereby enhancing the activity of the fused portion as a thermal stress absorber. A welding method is also provided.

摘要翻译： 一种火花塞的改进的结构，其使贵金属芯片的接头对诸如中心或接地电极的电极提供更高的耐久性。 接头由激光焊接形成。 在接头中形成由贵金属芯片的材料和通过激光焊接熔合在一起的电极制成的熔融部分，使得其可以在贵金属芯片和电极之间的接触的至少半个周边上继续，而没有界面 焊接，从而提高作为热应力吸收体的熔融部分的活性。 还提供焊接方法。

公开(公告)号：US06819031B2

公开(公告)日：2004-11-16

申请号：US09919998

申请日：2001-08-02

申请人： Tsunenobu Hori

发明人： Tsunenobu Hori

IPC分类号： H01T1320

CPC分类号： H01T13/39 ,  H01T21/02

摘要： Reliability in connection between a chip and a base material (at least one of the central electrode and the ground electrode) of a spark plug is improved by forming a plurality of welding layers at connection between the chip and the base material in a distance increasing direction from the central electrode with overlap. With respect to section along the connection surface the sum of the sectional area of the first weld layer and the second weld layer at the overlap portion between the first and second weld layers is equal to or greater than 1.4 times the sectional are of the chip. A stress releasing layer of which linear expansion coefficient is between those of the chip and the base material may be provided between the chip and the base material for welding.

摘要翻译： 通过在距离增加方向的芯片和基材之间的连接处形成多个焊接层来改善火花塞的芯片和基材（至少一个中心电极和接地电极）之间的连接可靠性 从中心电极重叠。 关于沿着连接表面的截面，第一焊接层和第二焊接层之间的重叠部分处的第一焊接层和第二焊接层的截面积之和等于或大于芯片截面的1.4倍。 可以在芯片和用于焊接的基材之间设置线芯膨胀系数在芯片和基材之间的应力释放层。

公开(公告)号：US08398447B2

公开(公告)日：2013-03-19

申请号：US13437171

申请日：2012-04-02

申请人： Ken Hanashi ,  Satoru Kadowaki ,  Tsunenobu Hori ,  Kenka Tsubota ,  Hirotaka Aida ,  Hiroya Ishiguro

发明人： Ken Hanashi ,  Satoru Kadowaki ,  Tsunenobu Hori ,  Kenka Tsubota ,  Hirotaka Aida ,  Hiroya Ishiguro

IPC分类号： H01T21/02 ,  H01T13/20

CPC分类号： H01T21/06 ,  H01T13/32

摘要： A method of manufacturing a spark plug having an attachment fitting 2, an insulator 3, a center electrode 4 and an earth electrode 5. While fixed to attachment fitting 2, earth electrode 5 has a convex part 510 formed by projecting a part of an opposed surface 51 toward center electrode 4, and a concave part 520 formed toward the opposed surface 51 from the earth electrode's back surface 52. The convex part 510 is disposed so that the extension of a shaft center of the convex part 510 passes through the area in which the concave part 520 is formed. The relation S1>=s is realized when an area of an opening of the concave part 520 is set to S1 and an average cross-section area of a cross section of the convex part 510 perpendicular to an axial direction of the spark plug is set to s.

摘要翻译： 一种制造具有附件2，绝缘体3，中心电极4和接地电极5的火花塞的方法。接地电极5固定在安装配件2上，具有凸部510， 表面51朝向中心电极4，以及从接地电极的背面52朝向相对面51形成的凹部520.凸部510设置成使得凸部510的轴心的延伸通过 凹部520形成。 当凹部520的开口面积设定为S1，并且凸部510的与火花塞的轴向垂直的截面的平均截面积被设定时，实现关系S1> = s 到了

公开(公告)号：US08398302B2

公开(公告)日：2013-03-19

申请号：US12596271

申请日：2008-04-16

申请人： Tsunenobu Hori

发明人： Tsunenobu Hori

IPC分类号： G01K1/08 ,  G01K1/14 ,  G01K13/00

CPC分类号： G01K13/02 ,  G01K1/14 ,  G01K1/20 ,  G01K7/22 ,  G01K2205/04

摘要： A protruding length L1 that is a distance between an inner circumference of a flow path through which fluid flows on an axis of a temperature sensor disposed in the flow path and the center of said temperature sensitive device is 50 mm or more. A protruding location that is a distance between an inner circumferential surface of the flow path and the center of said temperature sensitive device on a cross section extending perpendicular to the axis of said flow path through the center of said temperature sensitive device is defined as L1′. A flow path width that is a distance between intersections of the axis of the temperature sensor with the inner circumferential surface of said flow path when the temperature sensor is projected onto said cross section is defined as D1. A relation of L1′/D1 is specified as a function of the value of D1, thereby reducing heat transfer in an exhaust temperature sensor and enabling the temperature to be measured accurately.

摘要翻译： 作为设置在流路中的温度传感器的轴线上流动的流路的内周与所述感温装置的中心之间的距离的突出长度L1为50mm以上。 在垂直于通过所述温度敏感装置的中心的所述流路的轴线的横截面上，所述流路的内周面与所述感温装置的中心之间的距离的突出位置被定义为L1' 。 将温度传感器投影到所述截面上时，所述温度传感器的轴线与所述流路的内周面的交点之间的距离的流路宽度被定义为D1。 L1'/ D1的关系被指定为D1的值的函数，从而减少排气温度传感器中的热传递并使得能够精确地测量温度。