气动阀式两相脉冲爆震发动机研究

Investigation on the Aerovalve Two Phase Pulse Detonation Engine

开展常温常压进气条件下两相脉冲爆震发动机的研究具有重要的理论意义和工程应用价值。详细描述了气动阀式两相爆震发动机的主要组成部分的结构和性能要求以及主要的影响因素,并通过各参数不同组合下大量的试验研究,成功实现了常温常压进气条件下,以汽油为燃料的气动阀式脉冲爆震发动机的稳定爆震,同时获得了爆震管内燃烧波与气动阀参数、点火参数、扰流器参数、油雾参数和进口参数间的初步关系。研究成果为液态燃料爆震燃烧机理的发展,为实现两相爆震发动机的工程应用奠定了基础。

It is very difficult to detonate in a multi-cycle detonation engine filled with liquid fuel/air aerosol initially at 300 K and l atm as the detonable mixture. In the study, main components of the multi-cycle two phase pulse detonation engine utilizing liquid gasoline/air mixture are designed carefully, which includes detonation tube, air intake valve-aerovalve, fuel injection device, ignition system and controller etc. Experiments with various parameter combinations are performed and fully developed detonation occurs stably. According to the research, the detonation wave strength, velocity and deflagration to detonation transition length are obtained and influenced greatly by such parameters as the block factor of aerovalve, turbulizer parameter, droplet diameter and igniter location.