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公开(公告)号：US20070114901A1
公开(公告)日：2007-05-24
申请号：US11603158
申请日：2006-11-22
IPC分类号： H01T13/00
摘要： There is provided a method for controlling a plasma-jet spark plug in a four-stroke internal combustion engine, including the steps of: causing the spark plug to generate a primary discharge during either a compression stroke or an expansion stroke of the engine in such a manner as to produce a plasma by the primary discharge; and causing the spark plug to generate a secondary discharge during a time after the primary discharge and before the completion of a subsequent intake stroke of the engine.
摘要翻译： 提供了一种用于控制四冲程内燃机中的等离子体火花塞的方法，包括以下步骤：在发动机的压缩冲程或膨胀冲程期间使火花塞产生初次排放 通过初次放电产生等离子体的方式; 并且使得火花塞在一次排出之后的时间和在随后的发动机的进气冲程完成之前产生二次排放。
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公开(公告)号：US07827954B2
公开(公告)日：2010-11-09
申请号：US11603158
申请日：2006-11-22
摘要： There is provided a method for controlling a plasma-jet spark plug in a four-stroke internal combustion engine, including the steps of: causing the spark plug to generate a primary discharge during either a compression stroke or an expansion stroke of the engine in such a manner as to produce a plasma by the primary discharge; and causing the spark plug to generate a secondary discharge during a time after the primary discharge and before the completion of a subsequent intake stroke of the engine.
摘要翻译： 提供了一种用于控制四冲程内燃机中的等离子体火花塞的方法，包括以下步骤：在发动机的压缩冲程或膨胀冲程期间使火花塞产生初次排放 通过初次放电产生等离子体的方式; 并且使得火花塞在一次排出之后的时间和在随后的发动机的进气冲程完成之前产生二次排放。
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公开(公告)号：US07714488B2
公开(公告)日：2010-05-11
申请号：US11601111
申请日：2006-11-17
IPC分类号： H01T13/20
CPC分类号： F02P9/007 , F02P3/0884 , H01T13/20 , H01T13/50
摘要： A plasma jet spark plug provides improved ignitability and durability by forming a part of a spark discharge gap outside the electric discharge space which generates plasma. An ignition system for the plasma jet spark plug is also disclosed. The plasma jet spark plug includes a center electrode, an insulator defining an axial bore which partially surrounds the center electrode, a cavity surrounded by an inner circumferential face of the axial bore which extends from an opening portion of a front end of the axial bore of the insulator and wherein a front end face of the center electrode is formed. A ground electrode is bent towards a front end portion of the insulator.
摘要翻译： 等离子体火花塞通过在产生等离子体的放电空间之外形成火花放电间隙的一部分来提供改善的点火性和耐久性。 还公开了一种用于等离子体火花塞的点火系统。 等离子喷射火花塞包括中心电极，限定轴向孔的绝缘子，其部分地围绕中心电极，由轴向孔的内周面包围的空腔，其从轴向孔的前端的开口部分延伸， 绝缘体，其中形成中心电极的前端面。 接地电极朝向绝缘体的前端部弯曲。
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公开(公告)号：US20070114898A1
公开(公告)日：2007-05-24
申请号：US11601111
申请日：2006-11-17
IPC分类号： H01T13/20
CPC分类号： F02P9/007 , F02P3/0884 , H01T13/20 , H01T13/50
摘要： A plasma jet spark plug provides improved ignitability and durability by forming a part of a spark discharge gap outside the electric discharge space which generates plasma. An ignition system for the plasma jet spark plug is also disclosed. The plasma jet spark plug includes a center electrode, an insulator defining an axial bore which partially surrounds the center electrode, a cavity surrounded by an inner circumferential face of the axial bore which extends from an opening portion of a front end of the axial bore of the insulator and wherein a front end face of the center electrode is formed. A ground electrode is bent towards a front end portion of the insulator.
摘要翻译： 等离子体火花塞通过在产生等离子体的放电空间之外形成火花放电间隙的一部分来提供改善的点火性和耐久性。 还公开了一种用于等离子体火花塞的点火系统。 等离子喷射火花塞包括中心电极，限定轴向孔的绝缘子，其部分地围绕中心电极，由轴向孔的内周面包围的空腔，其从轴向孔的前端的开口部分延伸， 绝缘体，并且其中形成中心电极的前端面。 接地电极朝向绝缘体的前端部弯曲。
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公开(公告)号：US20070221156A1
公开(公告)日：2007-09-27
申请号：US11723625
申请日：2007-03-21
申请人： Katsunori Hagiwara , Satoshi Nagasawa , Wataru Matutani , Toru Nakamura , Tomoaki Kato , Yuichi Yamada
发明人： Katsunori Hagiwara , Satoshi Nagasawa , Wataru Matutani , Toru Nakamura , Tomoaki Kato , Yuichi Yamada
摘要： A plasma-jet spark plug includes a metal shell, an electrical insulator retained in the metal shell, a center electrode held in an axial hole of the electrical insulator to define a cavity by a front end face of the center electrode and an inner circumferential surface of the insulator axial hole and a ground electrode arranged on a front end of the electrical insulator. The ground electrode has an opening defining portion defining an opening for communication between the cavity and the outside of the spark plug. The opening defining portion is located radially inside of or in contact with a first imaginary circular conical surface where the first imaginary circular conical surface has an axis coinciding with an axis of the spark plug and a vertex angle of 120° opening toward a front end of the spark plug and passing through a front edge of the insulator axial hole.
摘要翻译： 等离子体火花塞包括金属壳，保持在金属壳中的电绝缘体，保持在电绝缘体的轴向孔中的中心电极，以通过中心电极的前端面限定空腔和内周面 的绝缘体轴向孔和布置在电绝缘体的前端上的接地电极。 接地电极具有限定开口的开口限定部分，用于在空腔和火花塞外部之间连通。 开口限定部分位于第一假想圆锥形表面的径向内部或与第一假想圆锥形表面接触，其中第一假想圆形圆锥形表面具有与火花塞的轴线重合的轴线和朝向前端的开口的顶角120° 火花塞穿过绝缘体轴向孔的前缘。
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公开(公告)号：US07328677B2
公开(公告)日：2008-02-12
申请号：US11723637
申请日：2007-03-21
摘要： A plasma-jet spark plug includes a metal shell, an electrical insulator retained in the metal shell, a center electrode held in an axial hole of the electrical insulator to define a cavity by a front end face of the center electrode and an inner circumferential surface of the insulator axial hole and a ground electrode fitted to a front end face of the electrical insulator and formed with an opening for communication between the cavity and the outside of the spark plug and satisfies the following dimensional relationships: d≦D≦3d; 0.5 mm≦d≦1.5 mm; L1≦1.5 mm; 2d≦L2≦3.5 mm; and L2+{(D−d)/2}≦3.5 mm where D is a diameter of the ground electrode opening; L1 is a thickness of the ground electrode; d is a diameter of the cavity; and L2 is a depth of the cavity.
摘要翻译： 等离子体火花塞包括金属壳，保持在金属壳中的电绝缘体，保持在电绝缘体的轴向孔中的中心电极，以通过中心电极的前端面限定空腔和内周面 的绝缘子轴孔和接地电极，其配合到电绝缘体的前端面，并且形成有用于在空腔和火花塞外部连通的开口，并且满足以下维度关系：<β在线公式 description =“In-Line Formulas”end =“lead”？> d <= D <= 3d; <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line -formulae description =“In-line Formulas”end =“lead”？> 0.5 mm <= d <= 1.5 mm; <？in-line-formula description =“In-line Formulas”end =“tail”？> ？in-line-formula description =“In-line Formulas”end =“lead”？> L1 <= 1.5 mm; <？in-line-formula description =“In-line Formulas”end =“tail”？> ？in-line-formula description =“In-line Formulas”end =“lea” d“>> 2d <= L2 <= 3.5mm; 和<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> L2 + {（Dd） /2}<=3.5mm <？in-line-formula description =“In-line Formulas”end =“tail”？>其中D是接地电极开口的直径; L1是接地电极的厚度; d是空腔的直径; L2是空腔的深度。
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公开(公告)号：US07305954B2
公开(公告)日：2007-12-11
申请号：US11723625
申请日：2007-03-21
申请人： Katsunori Hagiwara , Satoshi Nagasawa , Wataru Matutani , Toru Nakamura , Tomoaki Kato , Yuichi Yamada
发明人： Katsunori Hagiwara , Satoshi Nagasawa , Wataru Matutani , Toru Nakamura , Tomoaki Kato , Yuichi Yamada
摘要： A plasma-jet spark plug includes a metal shell, an electrical insulator retained in the metal shell, a center electrode held in an axial hole of the electrical insulator to define a cavity by a front end face of the center electrode and an inner circumferential surface of the insulator axial hole and a ground electrode arranged on a front end of the electrical insulator. The ground electrode has an opening defining portion defining an opening for communication between the cavity and the outside of the spark plug. The opening defining portion is located radially inside of or in contact with a first imaginary circular conical surface where the first imaginary circular conical surface has an axis coinciding with an axis of the spark plug and a vertex angle of 120° opening toward a front end of the spark plug and passing through a front edge of the insulator axial hole.
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公开(公告)号：US20070221157A1
公开(公告)日：2007-09-27
申请号：US11723637
申请日：2007-03-21
摘要： A plasma-jet spark plug includes a metal shell, an electrical insulator retained in the metal shell, a center electrode held in an axial hole of the electrical insulator to define a cavity by a front end face of the center electrode and an inner circumferential surface of the insulator axial hole and a ground electrode fitted to a front end face of the electrical insulator and formed with an opening for communication between the cavity and the outside of the spark plug and satisfies the following dimensional relationships: d≦D≦3d; 0.5 mm≦d≦1.5 mm; L1≦1.5 mm; 2d≦L2≦3.5 mm; and L2+{(D−d)/2}≦3.5 mm where D is a diameter of the ground electrode opening; L1 is a thickness of the ground electrode; d is a diameter of the cavity; and L2 is a depth of the cavity.
摘要翻译： 等离子体火花塞包括金属壳，保持在金属壳中的电绝缘体，保持在电绝缘体的轴向孔中的中心电极，以通过中心电极的前端面限定空腔和内周面 的绝缘子轴孔和接地电极，其配合到电绝缘体的前端面，并且形成有用于在空腔和火花塞外部连通的开口，并且满足以下维度关系：<β在线公式 description =“In-Line Formulas”end =“lead”？> d <= D <= 3d; <？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line -formulae description =“In-line Formulas”end =“lead”？> 0.5 mm <= d <= 1.5 mm; <？in-line-formula description =“In-line Formulas”end =“tail”？> ？in-line-formula description =“In-line Formulas”end =“lead”？> L1 <= 1.5 mm; <？in-line-formula description =“In-line Formulas”end =“tail”？> ？in-line-formula description =“In-line Formulas”end =“lea” d“>> 2d <= L2 <= 3.5mm; 和<？in-line-formula description =“In-line Formulas”end =“tail”？> <？in-line-formula description =“In-line Formulas”end =“lead”？> L2 + {（Dd） /2}<=3.5mm <？in-line-formula description =“In-line Formulas”end =“tail”？>其中D是接地电极开口的直径; L 1是接地电极的厚度; d是空腔的直径; L 2是空腔的深度。
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