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公开(公告)号：US11242775B2
公开(公告)日：2022-02-08
申请号：US17008725
申请日：2020-09-01
申请人： DENSO CORPORATION
摘要： A valve timing adjustment device includes a drive-side rotating body that rotates in conjunction with a crankshaft, a driven-side rotating body that rotates integrally with a camshaft, a speed reduction mechanism that transmits rotation while allowing relative rotation between the drive-side rotating body and the driven-side rotating body. The driven-side rotating body includes a fastening portion fastened to the end portion of the camshaft by a center bolt, a bearing portion that is located radially outward of the fastening portion and that axially supports the drive-side rotating body, and a fitting outer surface that is fitted to a regulating member on a side where an outer diameter of an axial contact surface with the other member on one side and the other side in the axial direction of the driven-side rotating body is large.
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公开(公告)号：US09972977B2
公开(公告)日：2018-05-15
申请号：US15304941
申请日：2015-04-15
申请人： DENSO CORPORATION
发明人： Aki Miyawaki , Atsushi Honda , Syoichi Takemoto , Akihiro Ando , Takanobu Aochi , Masamichi Shibata
摘要： A spark plug 5 for an internal combustion engine includes a center electrode 1, an insulator 2, and a housing 3. The insulator 2 includes a distal end side exposed part and an insulator enlarged diameter part 21. The housing 3 includes a lateral electrode 32, an engaging part 33, and a crimping portion 35. A buffer member 4 that restrains the distal end side exposed part 20 by pressing a part of the distal end side exposed part 20 toward the center and a part of the inner peripheral surface of the lateral electrode 32 in a radial direction at a distal end side of the engaging part 33 is disposed at a base end side of the gas pocket 230.
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公开(公告)号：US09371806B2
公开(公告)日：2016-06-21
申请号：US14780801
申请日：2014-01-28
申请人： DENSO CORPORATION
摘要： A spark plug 1 includes a housing 2, an insulator 3, a center electrode 4 held inside the insulator 3 such that a distal end portion 41 protrudes, a ground electrode 5 including a standing portion 51 and an opposing portion 52, and a guide member 22 that has a guide surface 221 facing the standing portion 51 of the ground electrode 5 and functions to guide a flow of an air-fuel mixture in a combustion chamber of an internal combustion engine to a spark discharge gap G formed between the center electrode 4 and the opposing portion 52 of the ground electrode 5. The opposing portion 52 of the ground electrode 5 has an opposing surface 521 that opposes the center electrode 4, a back surface 522 on the opposite axial side to the opposing surface 521, and a pair of side surfaces 523 and 524 that connect the opposing surface 521 and the back surface 522. Of the pair of side surfaces 523 and 524, at least the side surface 523 on the guide member 22 side is formed so as to make an obtuse angle with the opposing surface 521.
摘要翻译： 火花塞1包括壳体2，绝缘体3，保持在绝缘体3内部的中心电极4，使得前端部41突出，包括立起部51和相对部52的接地电极5和引导构件 22，其具有面对接地电极5的竖立部分51的引导表面221，并且用于将内燃机的燃烧室中的空气燃料混合物的流动引导到形成在中心电极4之间的火花放电间隙G 和接地电极5的相对部分52.接地电极5的相对部分52具有与中心电极4相对的相对表面521，与相对表面521相对的轴向侧上的后表面522和一对 连接相对表面521和后表面522的侧表面523和524。在一对侧表面523和524中，至少引导构件22侧的侧表面523形成为形成钝角 与相对表面521。
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公开(公告)号：US08963408B2
公开(公告)日：2015-02-24
申请号：US14101386
申请日：2013-12-10
申请人： Denso Corporation
摘要： A spark plug for internal combustion engines is provided, where the spark plug includes a cylindrical housing, a cylindrical insulation porcelain part, a center electrode, and a ground electrode. The insulation porcelain is housed in the housing and the center electrode is held inside the insulation porcelain. The ground electrode protrudes from a top end portion of the housing. A spark discharge gap is left between the ground and center electrodes. Further, first to third projections are formed on the top end portion. The first projection is opposed to the ground electrode with the center electrode therebetween. The second projection is closer to the ground electrode than to the first projection. The third projection is closer to the first projection than to the ground electrode.
摘要翻译： 提供了一种用于内燃机的火花塞，其中火花塞包括圆柱形壳体，圆柱形绝缘瓷部件，中心电极和接地电极。 绝缘瓷被容纳在壳体中，中心电极保持在绝缘瓷内。 接地电极从壳体的顶端部突出。 火花放电间隙留在接地和中心电极之间。 此外，在顶端部形成有第一至第三突起。 第一突起与其间具有中心电极的接地电极相对。 第二突起比第一突起更靠近接地电极。 第三投影比接地电极更靠近第一投影。
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公开(公告)号：US09377001B2
公开(公告)日：2016-06-28
申请号：US14718453
申请日：2015-05-21
发明人： Takanobu Aochi , Kaori Doi , Masamichi Shibata , Noriaki Nishio
CPC分类号： F02P15/001 , H01T1/20 , H01T13/02
摘要： A spark plug has a housing, a pair of center and ground electrodes configured to define a spark gap therebetween, a guide member and an oblique surface. The ground electrode has a standing portion that stands distalward from a distal end of the housing. The guide member is configured to guide the flow of an air-fuel mixture in a combustion chamber of an engine to the spark gap. The guide member protrudes distalward from the distal end of the housing at a different circumferential position from the ground electrode. The oblique surface is formed at the distal end of the housing so as to be circumferentially positioned between the guide member and the standing portion of the ground electrode. The oblique surface is oblique to the axial direction of the spark plug so that the radial distance between the oblique surface and the center electrode decreases in the distalward direction.
摘要翻译： 火花塞具有壳体，一对中心和接地电极，其构造成在其间限定火花隙，引导构件和倾斜表面。 接地电极具有从壳体的远端远离的站立部分。 引导构件被构造成将发动机的燃烧室中的空气燃料混合物的流动引导到火花隙。 引导构件在与接地电极不同的圆周位置处从壳体的远端向远侧突出。 倾斜表面形成在壳体的远端处，以便周向地定位在引导构件和接地电极的竖立部分之间。 斜面相对于火花塞的轴向倾斜，使得倾斜表面与中心电极之间的径向距离在远离方向上减小。
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公开(公告)号：US09287685B2
公开(公告)日：2016-03-15
申请号：US14651040
申请日：2013-12-10
申请人： DENSO CORPORATION
摘要： A spark plug for an internal combustion engine has a housing, an insulator, a center electrode, a ground electrode, and a tip projecting portion. The tip projecting portion has an air guiding surface. In the spark plug, when viewed from a plug axial direction, a straight line that connects the center, in the plug circumferential direction, of the erect portion of the ground electrode and a center point of the center electrode is a straight line. An extension line of the air guiding surface is a straight line. A distance between an intersection, between the straight line and the straight line, and the center point of the center electrode is a (positive towards the side moving away from the erect portion. An angle formed by the straight line and the straight line is b. A diameter of the housing is D. At this time, all of b≧−67.8×(a/D)+27.4, b≦−123.7×(a/D)+64.5, −0.4≦(a/D)≦0.4, and 0°
摘要翻译： 用于内燃机的火花塞具有壳体，绝缘体，中心电极，接地电极和尖端突出部分。 尖端突出部具有空气引导面。 在火花塞中，当从插头轴向观察时，将接地电极的直立部分的中心与插塞圆周方向连接的直线与中心电极的中心点成直线。 导气面的延长线是直线。 在直线与直线之间的交点之间的距离和中心电极的中心点之间的距离为（朝着直立部分移动的一侧为正），由直线和直线形成的角度为b （a / D）+27.4，b＆nlE; -123.7×（a / D）+64.5，-0.4＆nlE;（a / D） ＆nlE; 0.4和0°
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公开(公告)号：US09234491B2
公开(公告)日：2016-01-12
申请号：US14718783
申请日：2015-05-21
发明人： Takanobu Aochi , Masamichi Shibata , Noriaki Nishio , Kaori Doi
CPC分类号： F02P15/001 , H01T13/02 , H01T13/20
摘要： A spark plug for an internal combustion engine includes a tubular housing, a tubular insulator, a center electrode, a ground electrode and a guide member. The guide member is configured to guide the flow of an air-fuel mixture in a combustion chamber of the engine to a spark gap formed between the center electrode and the ground electrode. Moreover, in the spark plug, the following dimensional relationships are satisfied: b≧−67.8×(a/D)+27.4; b≦−123.7×(a/D)+64.5; −0.4≦(a/D)≦0.4; and 0°≦b≦90°. Further, with an oblique angle θ being in the range of 0 to 30°, the following dimensional relationship is also satisfied: 0.8≦r/R≦1. Consequently, the spark plug can secure, with a simple configuration, a stable ignition capability regardless of the mounting posture of the spark plug to the engine.
摘要翻译： 用于内燃机的火花塞包括管状壳体，管状绝缘体，中心电极，接地电极和引导构件。 引导构件被构造成将发动机的燃烧室中的空气燃料混合物的流动引导到形成在中心电极和接地电极之间的火花间隙。 此外，在火花塞中，满足以下尺寸关系：b≥-67.8×（a / D）+27.4; b＆nlE; -123.7×（a / D）+64.5; -0.4＆nlE;（a / D）＆nlE; 0.4; 0°＆nlE; b＆nlE; 90°。 此外，倾斜角度和角度; 在0至30°的范围内，还满足以下尺寸关系：0.8＆nlE; r / R＆nlE; 1。 因此，无论火花塞的安装姿势如何，发动机都可以以简单的结构确保火花塞的稳定点火能力。
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公开(公告)号：US09166377B2
公开(公告)日：2015-10-20
申请号：US13743753
申请日：2013-01-17
申请人： DENSO CORPORATION
发明人： Takanobu Aochi , Masamichi Shibata
摘要： The spark plug for an internal combustion engine has a cylindrical housing, a center electrode held inside the housing, a ground electrode connected to the housing and forming a spark discharge gap between itself and the center electrode, and, an end projection projected from the end portion of the housing toward the head end side of the spark plug. The center electrode and ground electrode are arranged so that most of the spark discharge gap is disposed over the open areas and the electrode area in which the end projection is arranged.
摘要翻译： 用于内燃机的火花塞具有圆柱形壳体，保持在壳体内部的中心电极，连接到壳体的接地电极，并在其与中心电极之间形成火花放电间隙，并且从端部突出的端部突出部 壳体的一部分朝向火花塞的头端侧。 中心电极和接地电极被布置成使得大部分火花放电间隙设置在开放区域和端部突起布置的电极区域中。
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