Mathematical modeling and analysis of thermodynamic processes in a twin-rotor piston engine

作     者：邹腾安 徐海军 潘存云 徐小军 陈虎 

作者机构：College of Mechatronics Engineering and Automation National University of Defense Technology 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2014年第21卷第11期

页      面：4163-4171页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：Project(7131109)supported by the National Defense Pre-research Foundation of China Project(51175500)supported by the National Natural Science Foundation of China 

主　　题：twin rotor piston engine mathematic model thermodynamic process simulation utilization ratio of cylinder volume 

摘      要：In order to study the major performance indicators of the twin-rotor piston engine(TRPE), Matlab/simulink was used to simulate the mathematical models of its thermodynamic processes. With consideration of the characteristics of the working processes in the TRPE, corresponding differential equations were established and then simplified by period features of the TRPE. Finally, the major boundary conditions were figured out. The changing trends of mass, pressure and temperature of working fuel in the working chamber during a complete engine cycle were presented. The simulation results are consistent with the trends of an actual working cycle in the TRPE, which indicates that the method of simulation is feasible. As the pressure in the working chamber is calculated, all the performance parameters of the TRPE can be obtained. The major performance indicators, such as the indicated mean effective pressure, power to weight ratio and the volume power, are also acquired. Compared with three different types of conventional engines, the TRPE has a bigger utilization ratio of cylinder volume, a higher power to weight ratio and a more compact structure. This indicates that TRPE is superior to conventional engines.