Image-based engine combustion chamber ignition test measurement structure and measurement method

The invention discloses an image-based engine combustion chamber ignition test measurement structure and a measurement method. An ignition accessory for ignition is mounted in a combustion chamber; the image measuring section is fixedly mounted on a downstream gas flame exhaust port of the combustion chamber; the high-temperature lens is installed on the image measuring section in a sealed mode through a fuel gas leakage preventing assembly and right faces the head of the combustion chamber, and the interface end of the high-temperature lens is located outside the image measuring section. As the high-temperature lens is hermetically mounted on the image measurement section through the gas leakage prevention assembly consisting of the mounting seat, the screw and the red copper pad, the stability of the lens is ensured, gas leakage is avoided, and the problem that flame gas leakage is easy to occur when a high-temperature refraction lens is directly mounted on the exhaust section through a flame image shooting