农业机械学报2013，Vol.44Issue(1)：11-16,6.DOI:10.6041/j.issn.1000-1298.2013.01.003
被动进气式自由活塞发电机设计与特性分析
Design and Characteristics Analysis of Free-piston Linear Alternator with Piston-mounted Passive Inlet Valve
摘要
Abstract
A free-piston linear alternator with an axial uniflow-scavenged using passive charge valve was designed. The structure and principle of the alternator were introduced. A simulation model of the working process which was validated with the test was established based on dynamics and thermodynamics equation. The motion characteristics and the performance effective factors of the alternator which was beneficial for performance optimization and prototype design were analyzed. The simulation results show that the alternator possesses a longer ventilation time and the duration accounts for about 58% of the whole cycle, which provides sufficient fresh mixture entering the cylinder. The motion curve of piston is non-symmetrical, the acceleration of the free-piston at TDC changes violently and it needs accelerate the combustion heat release rate to adapt to the changes. It should appropriately increase the piston mass and the opening-closing position of the exhaust valve, and reasonably reduce the ignition advanced position and the working pressure of the inlet valve to reach higher output power.关键词
自由活塞/直线发电机/被动式进气/运动特性/影响因素Key words
Free piston Linear alternator Passive charge Motion characteristic Influence factor分类
能源科技引用本文复制引用
王东杰,袁晨恒,许大涛,左正兴..被动进气式自由活塞发电机设计与特性分析[J].农业机械学报,2013,44(1):11-16,6.基金项目
国家自然科学基金资助项目(51006010)和高等学校学科创新引智计划资助项目(B12022) （51006010）
