基于Matlab/Simulink的直线发动机性能仿真研究  

A Simulation Analysis on Free-Piston Engine Based on Matlab/Simulink

作　　者：王哲[1] 叶晓倩[1] 邓俊[1] 

机构地区：[1]同济大学,上海200092

出　　处：《内燃机工程》2009年第1期69-73,共5页Chinese Internal Combustion Engine Engineering

基　　金：上海市科委资助项目(061612075);上海市重点学科建设项目(B303)

摘　　要：建立了直线发动机的动力学及燃烧模型,通过Matlab/Simulink建模仿真,研究了直线发动机的运行特性,并定性分析了各主要设计、控制参数对系统性能的影响。研究结果表明:直线发动机的活塞组件质量直接影响系统输出性能,且在3.5~4 kg范围内输出功率较高;而对点火位置和喷油量的实时调节则是直线发动机控制的关键。The dynamics and thermodynamics of the free-piston engine was analyzed. A time-based Matlab/Simulink model was employed to study the performance of a two-stroke free-piston engine and the effects of the main parameters on the engine performance were qualitatively analyzed. The result shows that the mass of the piston assembly l^s a direct influence on the output of the free-piston engine, and the engine has higher output when the piston assemly mass is within 3.5-4 kg. Moreover, the real-time control of the spark position as well as the fuel injection quantity is the key to the engine control.

关 键 词：内燃机 直线发动机 MATLAB/SIMULINK 活塞组件质量 实时调节 

分 类 号：TK441[动力工程及工程热物理—动力机械及工程]