针对微内燃机燃烧室的尺寸特征和点火形式,对微小空间点火实验装置进行了研究,设计并制作了微小空间内的放电点火装置.设计的硅微燃烧室的尺寸为1 mm×1 mm×1 mm、3 mm×3 mm×1 mm和9 mm×9 mm×1 mm;点火电极位于燃烧室腔体中央,电极间隙在10～100μm;电极材料为金.本文为微小空间放电点火特性实验研究提供了一种通用装置,也为以微型内燃机为代表的便携式微型高能电源组的微型化和实用化提供了技术支持. Aiming at the characteristics of the combustion chamber of micro-internal combustion engine and its ignition mode, the ignition device of small space was studied, and a discharge ignition device was designed and fabricated in a small space.The size of the designed silicon micro-combustion chamber was 1 mm × 1 mm × 1 mm, 3 mm × 3 mm × 1 mm and 9 mm × 9 mm × 1 mm respectively.The ignition electrode is located in the center of the chamber of the combustion chamber, the electrode gap is 10 ~ 100μm, and the electrode material is gold.This paper is an experimental study on ignition characteristics of small space discharge Provides a universal device and also provides technical support for the miniaturization and practicalization of a portable miniature high-energy power source group represented by a micro-internal combustion engine.