Ignition system for an internal combustion engine
    3.
    发明授权
    Ignition system for an internal combustion engine 失效
    内燃机点火系统

    公开(公告)号:US5983871A

    公开(公告)日:1999-11-16

    申请号:US966640

    申请日:1997-11-10

    IPC分类号: F02P23/04

    CPC分类号: F02P23/04

    摘要: The invention relates to an ignition system for an internal combustion engine (ICE) that provides fast transfer from a laminar combustion in an ignition kernel to a self-sustaining turbulent flame propagation, thus leading to a reduction in the total time of combustion. The effect is achieved by transiently attacking the ignition kernel with a high-frequency (HF) electromagnetic radiation pulse, which is quasiperiodically modulated with 10-1000 kHz frequency in the initial period of combustion (50-500 .mu.s) following the ignition. Radiation is absorbed by electrons existing only inside the ignition kernel during the initial stage of its development. Due to thermal inertia, the medium perceives the oscillations on the frequency of modulation, whereby the surface of the kernel is developed and is split into separate fractions. This causes transfer from laminar to turbulent bulk combustion. The technique proposed is of an especially great importance for a lean-burn ICE which is normally characterized by low combustion temperature and hindered transition to turbulent flame propagation.

    摘要翻译: 本发明涉及一种用于内燃机(ICE)的点火系统,其提供从点火核中的层状燃烧到自维持湍流火焰传播的快速传递,从而导致燃烧总时间的减少。 该效果是通过用高频(HF)电磁辐射脉冲瞬时攻击点火核来实现的,所述高频(HF)电磁辐射脉冲在点燃之后的燃烧初始阶段(50-500μs)以10-1000kHz频率进行准周期性调制。 在其开发初期,辐射被仅存在于点火核内部的电子所吸收。 由于热惯性,介质感知调制频率上的振荡,从而使内核的表面被分解成分开的分数。 这导致从层流到湍流体燃烧的转移。 所提出的技术对于通常以低燃烧温度和阻碍向湍流火焰传播的过渡为特征的贫燃ICE是非常重要的。