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本文提出了一种新型的观测研究汽油机燃烧过程的有效方法—光纤传象高速摄影技术。作者采用自行研制的光纤传象内窥光学系统,与高速摄影机配合使用,在汽油机射流燃烧室内成功地拍摄到了射流燃烧室中燃烧过程序列照片,该装置安装、使用方便,只需把内窥摄影物镜拧入燃烧室内,无需改变发动机结构,不必拆卸气缸盖和其它零件。由高速影片上可以清楚地观察到电火花跳火后火焰核心形成及火焰发展传播过程,可以测算出着火延迟,火焰传播速度,燃烧持续时间等参数,为判断和改进燃烧过程提供了可靠的依据。
In this paper, a new method of observing and studying the combustion process of gasoline engine is presented. The author uses self-developed optical imaging endoscopic optical system, with the use of high-speed cameras, gasoline engine jet combustion chamber successfully captured the jet combustion chamber combustion process sequence photos, the installation of the device, easy to use, just endoscopic photography The objective is screwed into the combustion chamber without having to change the engine structure, without having to remove the cylinder head and other parts. From the high-speed film can be clearly observed after EDM flame core formation and propagation of flame propagation process, you can calculate the ignition delay, the flame propagation velocity, the duration of the combustion parameters to determine and improve the combustion process provides a reliable basis .