Multi-gap ignition device

The utility model further provides a multi-gap ignition device, the multi-gap ignition device comprises a trigger coil, a magnetic core and a flywheel, and the trigger coil is arranged around the magnetic core; the trigger coil is connected to an ignition circuit to output an ignition signal; the magnetic core is made of a magnetic material, and at least part of the flywheel is made of a magnetic sensitive material; the distance between the outer contour of the flywheel and the trigger coil is defined as a gap distance, and the outer contour of the flywheel is configured to have at least three different gap distances. The multi-gap ignition device has the beneficial effect that the flywheel structure is improved, so that the ignition control difficulty is reduced. 本申请还提供一种多间隙的点火装置，包括：触发线圈、磁芯和飞轮，其中，所述触发线圈环绕所述磁芯设置；所述触发线圈接入一点火电路以输出点火信号；所述磁芯采用磁性材料制成，所述飞轮至少部分由磁敏材料制成；所述飞轮的外轮廓相距所述触发线圈的距离定义为间隙距离，所述飞轮的外轮廓被构造为至少具有三个相异的间隙距离。本申请的有益之处在于提供一种对飞轮结构的改进从而降低点火控制难度的多间隙的点火装置。