Long-life traveling spark ignitor and associated firing circuitry
    1.
    发明授权
    Long-life traveling spark ignitor and associated firing circuitry 有权
    长寿命旅行火花点火器和相关的点火电路

    公开(公告)号:US06474321B1

    公开(公告)日:2002-11-05

    申请号:US09595703

    申请日:2000-06-16

    IPC分类号: F02P302

    CPC分类号: H01T13/50 F02P9/007

    摘要: An ignitor and associated electronics for igniting a combustible mixture in a cylinder of an internal combustion engine are described. The ignitor includes at least two spaced-apart electrodes that define a discharge gap. The space between the electrodes is substantially filled with a dielectric material. The dielectric material is spaced-apart from at least one of the electrodes to provide an air gap over which an initial voltage breakdown between the electrodes will occur. The air gap serves to vary the location of the initial breakdown and as a barrier to a short circuit between the electrodes due to carbon and/or metal deposit buildup on the dielectric material. The associated electronics provide a first potential between the electrodes that generates a plasma between the electrodes. Then the volume of the plasma is increased by the application of a second potential that creates a current through the plasma. The plasma, as well as the current passing through, is swept outward due to the interaction of Lorentz and thermal expansion forces with the plasma. Also described are relative orientations of the electrodes that lead to greater plasma formation.

    摘要翻译: 描述了用于点燃内燃机的气缸中的可燃混合物的点火器和相关联的电子器件。 点火器包括限定放电间隙的至少两个间隔开的电极。 电极之间的空间基本上被电介质材料填充。 电介质材料与至少一个电极间隔开,以提供气隙,电极之间将发生初始电压击穿。 空气间隙用于改变初始击穿的位置,并且由于电介质材料上的碳和/或金属沉积物积聚而导致电极之间短路的障碍。 相关联的电子器件在电极之间提供在电极之间产生等离子体的第一电位。 然后通过施加产生通过等离子体的电流的第二电位来增加等离子体的体积。 由于洛伦兹和热膨胀力与等离子体的相互作用,等离子体以及通过的电流被向外扫过。 还描述了导致更大等离子体形成的电极的相对取向。