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本文针对内燃机缸内气流运动研究需要，在国内首次开发研制出一套内燃机缸内全流场ＰＩＶ测速系统。该系统具有全透明的气缸体和活塞，激光器发光孔可３６０°旋转，配以灵活的光路调节装置和拍摄装置。可对内燃机整个工作范围内的缸内流场进行全视野测量。
In this paper, aiming at the need of studying the airflow in the cylinder of the internal combustion engine, a set of PIV speed measuring system of the full flow field in the cylinder of the internal combustion engine has been developed for the first time in China. The system features an all-transparent cylinder block and piston with a 360 ° rotation of the laser’s aperture for flexible light path adjustment and photography. Full-field measurement of in-cylinder flow field over the entire operating range of the internal combustion engine.