公开(公告)号：US06653767B2

公开(公告)日：2003-11-25

申请号：US09960514

申请日：2001-09-24

申请人： Hitoshi Morita ,  Shinichi Okabe ,  Takehiko Kato ,  Hiroshi Yorita ,  Keiji Kanao ,  Tetsuya Miwa

发明人： Hitoshi Morita ,  Shinichi Okabe ,  Takehiko Kato ,  Hiroshi Yorita ,  Keiji Kanao ,  Tetsuya Miwa

IPC分类号： H01T1320

CPC分类号： H01T13/39 ,  H01T13/20

摘要： At least one of a center electrode tip and a ground electrode tip is made of an iridium alloy. A discharge gap, formed between the center electrode tip and the ground electrode tip, is less than 1.1 mm. And, cross sections of the center electrode tip and the ground electrode tip are equal to or smaller than 0.95 mm2 in a spherical region where a distance from a midpoint of the discharge gap is within 0.6 mm.

摘要翻译： 中心电极尖端和接地电极尖端中的至少一个由铱合金制成。 形成在中心电极尖端和接地电极尖端之间的放电间隙小于1.1mm。 并且，在距离放电间隙的中点的距离在0.6mm以内的球面区域中，中心电极端部和接地电极端部的截面为0.95mm 2以下。

公开(公告)号：US06844662B2

公开(公告)日：2005-01-18

申请号：US10661568

申请日：2003-09-15

申请人： Hitoshi Morita ,  Shinichi Okabe ,  Takehiko Kato ,  Hiroshi Yorita ,  Keiji Kanao ,  Tetsuya Miwa

发明人： Hitoshi Morita ,  Shinichi Okabe ,  Takehiko Kato ,  Hiroshi Yorita ,  Keiji Kanao ,  Tetsuya Miwa

IPC分类号： F02P13/00 ,  H01T13/20 ,  H01T13/32 ,  H01T13/39

CPC分类号： H01T13/39 ,  H01T13/20

摘要： At least one of a center electrode tip and a ground electrode tip is made of an iridium alloy. A discharge gap, formed between the center electrode tip and the ground electrode tip, is less than 1.1 mm. And, cross sections of the center electrode tip and the ground electrode tip are equal to or smaller than 0.95 mm2 in a spherical region where a distance from a midpoint of the discharge gap is within 0.6 mm.

摘要翻译： 中心电极尖端和接地电极尖端中的至少一个由铱合金制成。 形成在中心电极尖端和接地电极尖端之间的放电间隙小于1.1mm。 并且，在距离放电间隙的中点的距离在0.6mm以内的球面区域中，中心电极端部和接地电极端部的截面为0.95mm 2以下。

公开(公告)号：US06397827B1

公开(公告)日：2002-06-04

申请号：US09630009

申请日：2000-07-31

申请人： Takehiko Kato ,  Tohru Yoshinaga ,  Hiroshi Yorita ,  Shinichi Okabe ,  Tatsushi Nakashima ,  Tetsuya Miwa

发明人： Takehiko Kato ,  Tohru Yoshinaga ,  Hiroshi Yorita ,  Shinichi Okabe ,  Tatsushi Nakashima ,  Tetsuya Miwa

IPC分类号： F02P1510

CPC分类号： F02P15/08 ,  F02D41/3023 ,  F02D2041/389 ,  F02P9/007

摘要： An ignition device sets a total discharge period, each discharge period and each intermittent period of a multiple discharge are set by a control map in addition to the setting of a throttle opening, fuel injection timing, fuel injection period and ignition timing for the range of non-stratified charge combustion, when a direct injection-type engine operates in the range of stratified charge combustion. Ignition signals including a plurality of rises and falls are outputted in time with a specific ignition timing after fuel injection. Thus a plurality of sparks are generated from the spark plug, ensuring reliable ignition in response to changes in the concentration of sprayed fuel within the operation range for stratified charge combustion.

摘要翻译： 点火装置设定总放电周期，除了设定节气门开度，燃料喷射正时，燃料喷射期间和点火正时之外，还通过控制图来设定每个放电周期和多次放电的每个间歇期间 当直喷式发动机在分层充气燃烧的范围内运行时，非分层充气燃烧。 在燃料喷射之后，具有特定点火正时的时间，输出包括多个上升和下降的点火信号。 因此，从火花塞产生多个火花，确保在分层充气燃烧的操作范围内响应于喷射燃料的浓度变化而可靠地着火。

公开(公告)号：US20050029915A1

公开(公告)日：2005-02-10

申请号：US10910585

申请日：2004-08-04

申请人： Hiroshi Yorita ,  Shinichi Okabe ,  Hitoshi Morita ,  Tsunenobu Hori

发明人： Hiroshi Yorita ,  Shinichi Okabe ,  Hitoshi Morita ,  Tsunenobu Hori

IPC分类号： C22C5/04 ,  H01T13/20 ,  H01T13/39 ,  H01T13/46

CPC分类号： H01T13/39

摘要： A small-sized spark plug is provided which ensures the stability in the location of production of sparks between center and ground electrodes. The center and ground electrodes have joined thereon cylindrical members such as noble metal chips which are opposed to each other through a spark gap. The cylindrical members are so oriented to have longitudinal center lines extend parallel in misalignment with each other. This orientation results in shorter and longer intervals between end surfaces of the cylindrical members. The sparks are concentrated between portions of edges of cylindrical members located apart the shorter interval, thereby resulting in the stability in the location of production of the sparks.

摘要翻译： 提供了一种小型火花塞，确保了在中心和接地电极之间产生火花的位置的稳定性。 中心接地电极通过火花隙彼此相对的圆柱形构件，例如贵金属芯片。 圆柱形构件被定向成具有彼此不对准的纵向中心线平行延伸。 这种方向导致圆柱形构件的端面之间的更短和更长的间隔。 火花集中在位于较短间隔之间的圆筒形部件的边缘部分之间，从而导致火花产生位置的稳定性。

公开(公告)号：US07449822B2

公开(公告)日：2008-11-11

申请号：US10910585

申请日：2004-08-04

申请人： Hiroshi Yorita ,  Shinichi Okabe ,  Hitoshi Morita ,  Tsunenobu Hori

发明人： Hiroshi Yorita ,  Shinichi Okabe ,  Hitoshi Morita ,  Tsunenobu Hori

IPC分类号： H01T13/20 ,  H01T13/39

CPC分类号： H01T13/39

摘要： A small-sized spark plug is provided which ensures the stability in the location of production of sparks between center and ground electrodes. The center and ground electrodes have joined thereon cylindrical members such as noble metal chips which are opposed to each other through a spark gap. The cylindrical members are so oriented to have longitudinal center lines extend parallel in misalignment with each other. This orientation results in shorter and longer intervals between end surfaces of the cylindrical members. The sparks are concentrated between portions of edges of cylindrical members located apart the shorter interval, thereby resulting in the stability in the location of production of the sparks.

摘要翻译： 提供了一种小型火花塞，确保了在中心和接地电极之间产生火花的位置的稳定性。 中心接地电极通过火花隙彼此相对的圆柱形构件，例如贵金属芯片。 圆柱形构件被定向成具有彼此不对准的纵向中心线平行延伸。 这种方向导致圆柱形构件的端面之间的更短和更长的间隔。 火花集中在位于较短间隔之间的圆筒形部件的边缘部分之间，从而导致火花产生位置的稳定性。

公开(公告)号：US07313949B2

公开(公告)日：2008-01-01

申请号：US11264153

申请日：2005-11-02

申请人： Hiroshi Yorita ,  Tetsuya Miwa ,  Hiromi Hiramatsu

发明人： Hiroshi Yorita ,  Tetsuya Miwa ,  Hiromi Hiramatsu

IPC分类号： G01M15/00

CPC分类号： G01L23/22

摘要： A combustion chamber pressure sensor for an internal combustion engine includes an elongated pressure transmitting member having one end exposed to the interior of an engine cylinder and the opposite end contacting a pressure sensing element which generates a pressure measurement signal, the pressure transmitting member and pressure sensing element being contained within an elongated housing. A damping body formed of a viscoelastic material is disposed on an outer or inner circumferential surface of the housing, for reducing an amount of engine vibration that is transmitted to the pressure sensing element and thereby reducing noise in the pressure measurement signal.

摘要翻译： 用于内燃机的燃烧室压力传感器包括细长的压力传递构件，其具有暴露于发动机气缸内部的一端，并且相对端接触产生压力测量信号的压力感测元件，压力传递构件和压力感测 元件被包含在细长壳体内。 由壳体的外周面或内周面设置由粘弹性材料形成的阻尼体，用于减少传递到压力感测元件的发动机振动量，从而降低压力测量信号中的噪声。

公开(公告)号：US20060090544A1

公开(公告)日：2006-05-04

申请号：US11264153

申请日：2005-11-02

申请人： Hiroshi Yorita ,  Tetsuya Miwa ,  Hiromi Hiramatsu

发明人： Hiroshi Yorita ,  Tetsuya Miwa ,  Hiromi Hiramatsu

IPC分类号： G01L23/22 ,  G01M15/08

CPC分类号： G01L23/22

摘要： A combustion chamber pressure sensor for an internal combustion engine includes an elongated pressure transmitting member having one end exposed to the interior of an engine cylinder and the opposite end contacting a pressure sensing element which generates a pressure measurement signal, the pressure transmitting member and pressure sensing element being contained within an elongated housing. A damping body formed of a viscoelastic material is disposed on an outer or inner circumferential surface of the housing, for reducing an amount of engine vibration that is transmitted to the pressure sensing element and thereby reducing noise in the pressure measurement signal.

摘要翻译： 用于内燃机的燃烧室压力传感器包括细长的压力传递构件，其具有暴露于发动机气缸内部的一端，并且相对端接触产生压力测量信号的压力感测元件，压力传递构件和压力感测 元件被包含在细长壳体内。 由壳体的外周面或内周面设置由粘弹性材料形成的阻尼体，用于减少传递到压力感测元件的发动机振动量，从而降低压力测量信号中的噪声。

公开(公告)号：US06265814B1

公开(公告)日：2001-07-24

申请号：US09143613

申请日：1998-08-28

申请人： Tohru Yoshinaga ,  Takehiko Kato ,  Tokio Kohama ,  Hiroshi Yorita ,  Masaki Takeyama ,  Masatoshi Ikeda

发明人： Tohru Yoshinaga ,  Takehiko Kato ,  Tokio Kohama ,  Hiroshi Yorita ,  Masaki Takeyama ,  Masatoshi Ikeda

IPC分类号： H01T1320

CPC分类号： H01T13/40

摘要： To excellently grow flame kernel while lowering breakdown voltage, a bypass electrode comprising a semiconductor material is installed in a path bypassing an inductive spark gap between a center electrode and a ground electrode, and the center electrode and the ground electrode are electrically connected by the bypass electrode and capacitive discharge is carried out by applying breakdown voltage between the center electrode and the ground electrode via the bypass electrode, and thereafter, inductive discharge is carried out through the inductive spark gap.

摘要翻译： 为了在降低击穿电压的同时优良地生长火焰核，包括半导体材料的旁路电极安装在绕过中心电极和接地电极之间的感应火花隙的路径中，并且中心电极和接地电极通过旁路电连接 电极和电容放电是通过旁路电极在中心电极和接地电极之间施加击穿电压进行的，之后通过感应火花隙进行感应放电。

公开(公告)号：US06653840B2

公开(公告)日：2003-11-25

申请号：US10115022

申请日：2002-04-04

申请人： Hiroshi Yorita ,  Masatoshi Ikeda ,  Makoto Toriyama ,  Tohru Yoshinaga

发明人： Hiroshi Yorita ,  Masatoshi Ikeda ,  Makoto Toriyama ,  Tohru Yoshinaga

IPC分类号： F02P1700

CPC分类号： F02P17/12 ,  F02P2017/125

摘要： In an engine ignition unit, a transistor and a current detecting resistor are connected to primary and secondary windings of an ignition coil, respectively. The current detecting resistor is used for detecting a current flowing between the opposing electrodes of spark plug. At an ignition by the spark plug, high-frequency square wave signals are generated by an oscillator after an ignition signal is cut off. The square wave signals turn on and off the transistor. By this operation, a battery voltage is intermittently applied to the primary winding and an ion current is measured. A frequency of the square wave signals is set close to a resonant frequency of an ion current path including the spark plug, the secondary winding of the ignition coil and the current detecting resistor.

公开(公告)号：US20080314354A1

公开(公告)日：2008-12-25

申请号：US12143161

申请日：2008-06-20

申请人： Hiroshi Yorita ,  Masamichi Shibata

发明人： Hiroshi Yorita ,  Masamichi Shibata

IPC分类号： F02F1/24

CPC分类号： H01T13/08 ,  H01T13/20

摘要： A spark plug and cylinder head assembly includes a spark plug and a cylinder head of an engine. The cylinder head has a bore and a surface which faces a combustion chamber of the engine and on which the bore opens. The spark plug is fit in the bore of the cylinder head, and includes a metal shell, an insulator retained in the metal shell, a center electrode secured in the insulator, and a ground electrode facing the center electrode through a spark gap. An end surface of the metal shell has an outer edge and an inner edge, and tapers from the outer edge to the inner edge in a direction toward the inside of an air pocket formed between the metal shell and the insulator. The outer edge of the end surface of the metal shell protrudes from the surface of the cylinder head into the combustion chamber.

摘要翻译： 火花塞和气缸盖组件包括火花塞和发动机的气缸盖。 气缸盖具有孔和与发动机的燃烧室相对的表面，并且孔开放。 火花塞安装在气缸盖的孔中，并且包括金属壳，保持在金属壳中的绝缘体，固定在绝缘体中的中心电极和通过火花隙面对中心电极的接地电极。 金属壳的端面具有外边缘和内边缘，并且在形成于金属壳和绝缘体之间的气穴的内侧的方向上从外边缘到内边缘逐渐变细。 金属壳的端面的外缘从气缸盖的表面突出到燃烧室中。