公开(公告)号：US09391431B2

公开(公告)日：2016-07-12

申请号：US14093096

申请日：2013-11-29

Applicant: DENSO CORPORATION

Inventor： Shinichi Okabe ,  Yoshihiro Nakase ,  Akimitsu Sugiura ,  Yuya Abe

IPC: H01T13/20 ,  H01T13/52 ,  H01T13/46

CPC classification number: H01T13/52 ,  H01T13/467

Abstract: A barrier discharge ignition apparatus has a tip end exposed to a combustion chamber of an internal combustion engine and, when subjected to a high-frequency high-voltage AC burst, generates streamer discharges for igniting a fuel/air mixture in the combustion chamber. A central electrode of the apparatus, covered by a dielectric layer and coaxially enclosed in a ground electrode, extends into the combustion chamber to a greater distance than the ground electrode. An electrode portion close to the tip end of the inner periphery of the ground electrode protrudes towards the dielectric layer, for creating a localized high-density electric field. The streamer discharges thereby enter both the to combustion chamber and also a discharge chamber of the ignition apparatus.

Abstract translation: 阻挡放电点火装置具有暴露于内燃机的燃烧室的前端，当经受高频高压交流脉冲时，产生用于点燃燃烧室内的燃料/空气混合物的流光放电。 该装置的中心电极被电介质层覆盖并同轴地封闭在接地电极中，延伸到燃烧室中至比接地电极更大的距离。 靠近接地电极的内周的末端的电极部朝向电介质层突出，用于产生局部高密度电场。 流光放电从而进入燃烧室和点火装置的放电室。

公开(公告)号：US09331458B2

公开(公告)日：2016-05-03

申请号：US14134217

申请日：2013-12-19

Applicant: DENSO CORPORATION

Inventor： Shinichi Okabe ,  Yoshihiro Nakase ,  Akimitsu Sugiura ,  Yuya Abe

IPC: H01T13/20 ,  H01T13/52 ,  H01T13/50 ,  F02P9/00

CPC classification number: H01T13/52 ,  F02P9/007 ,  H01T13/20 ,  H01T13/50

Abstract: An ignition system for an internal combustion engine includes a discharge portion of the center electrode in which a part thereof is surrounded by a bottom portion and a tubular tip portion of the center dielectric, the part of the discharge portion and the tubular tip portion are projected into a combustion chamber of the internal combustion engine from a substantially annular tip portion of the ground electrode that opens to the combustion chamber at a distal end of the ground electrode, a diameter-changing portion formed by reducing a diameter of a part of the tubular tip portion in a radial direction gradually as approaching toward a tip thereof, and a thin-walled portion formed by reducing a thickness of the tip of the tubular tip portion.

Abstract translation: 一种用于内燃机的点火系统包括中心电极的排出部分，其一部分被中心电介质的底部和管状末端部分包围，排出部分和管状尖端部分的一部分被突出 从接地电极的基本上环形的尖端部分在内部燃烧室的燃烧室中进入到在接地电极的远端处的燃烧室的直径变化部分，所述直径变化部分通过减小管状部分的一部分的直径而形成 沿径向方向的尖端部分逐渐接近尖端，并且通过减小管状末端部分的尖端的厚度而形成的薄壁部分。