【摘要】 本文介绍一种能控制喷油器喷射次数且能与高速摄影机联动的自动装置。文中利用该装置研究了轴针式喷嘴的喷油过程,探讨了喷嘴油束形成的特征。研究结果表明,在喷射初期和后期,油束在不同的启阀压力下,其穿透能力有不同的变化规律。文中还分析了背压对穿透、雾化锥角等的影响。更多还原

【Abstract】 This paper is concerned with an apparatus capable of automatically controlling the number of injections of diesel engine injector and coordinating with a high-speed camera. The apparatus has been used in investigating the spray formation of a pintle nozzle. It is shown that the spray penetration of a pintle nozzle at the beginning and end of injection under various nozzle opening pressures is different. The effects of back pressure on the spray penetration, the spray angle, etc. are also discussed.更多还原