The design and simulation of a two-stroke free-piston compression ignition engine for electrical power generation
The design and simulation of a two-stroke free-piston compression ignition engine for electrical power generation
复制标题
DOI：
10.1016/j.applthermaleng.2007.04.009
复制
发表时间：
2008-04
影响因子：
6.4
通讯作者：
R. Mikalsen;A. Roskilly
中科院分区：
文献类型：
--
作者：
R. Mikalsen;A. Roskilly
由于自由活塞发动机在燃料效率和发动机排放方面的潜在优势，世界各地的许多研究小组正在对自由活塞发动机进行研究。已经出现了一些原型，主要用于车辆推进，并报告了与传统技术相比的良好性能。本文介绍了一种适用于大型发电系统的模块化压燃式自由活塞发动机发电机的设计。全循环发动机仿真模型的发展进行了说明，并提出了广泛的仿真结果，使洞察发动机的工作特性和性能。自由活塞发动机的操作特性被发现与传统发动机的操作特性显著不同，由于快速的动力冲程膨胀，在燃料效率和排放形成方面具有潜在的优势。没有发现改变发动机冲程长度和压缩比的效果会产生任何大的优势。
Free-piston engines are under investigation by a number of research groups worldwide due to their potential advantages in terms of fuel efficiency and engine emissions. Some prototypes have emerged, mainly aimed for vehicle propulsion, and have reported favourable performance compared to conventional technology. This paper describes the design of a modular compression ignition free-piston engine generator, applicable to electric power generation in large-scale systems. The development of a full-cycle engine simulation model is described, and extensive simulation results are presented, giving insight into engine operating characteristics and performance. The operating characteristics of the free-piston engine was found to differ significantly from those of conventional engines, giving potential advantages in terms of fuel efficiency and emissions formation due to fast power stroke expansion. Effects of varying engine stroke length and compression ratio were not found to give any large advantages.