发动机温差发电仿真系统研究

Research on the Simulative System of Engine-thermoelectric Source

构建了车用发动机温差发电系统的数字仿真系统,仿真流程是:根据发动机的结构,采用AVL-BOOST软件对发动机的运行工况进行仿真,以获得的排气温度、压力、流速值作为温差发电计算的初始条件;建立温差发电器的几何模型,采用Star-CD软件对它的传热特性进行数值计算,获得转换元件的温度分布,进而可以计算得到温差电源的输出参数。文中针对某型号四冲程汽油机-内置式温差发电器系统,给出了计算实例。

A car engine -thermoelectric source simulation system is constructed. The simulation procedure of the system is as the following. With the using of AVL - BOOST software, the operating conditions of this system is simulated according to the structure of the engine and the temperature, velocity, pressure of the exhaust are obtained, which is used for the initial conditions of the thermal power. The geometry model of thermoelectric generator is established and numerical calculation is done with the Star - CD software. This paper focuses on a type of four - stroke gasoline engine - intramural thermoelectric system and gives a calculation example of the generator＇s components.