Abstract
The purpose of this paper is to present the possibility to combine a Stirling engine and a DC motor as a hybrid system. The Stirling engine is a heat engine that can be used with various kind of fuel. The main disadvantages of the engine are the low starting torque and the low engine power. This make the engine cannot start by itself. In this paper we propose how to combine the Stirling engine with a DC motor to solve the problem. Then, we use the DC motor at the starting phase or in the situation that the Stirling engine cannot work properly. This hybrid system consists of a Stirling engine, a DC motor, a driving gear box, a power transmission unit, a battery and a microcontroller. The driving engine can be switched by the microcontroller on the power transmission unit. The hybrid system is tested in a real small train system model. The results show that the system has the maximum speed of 20.4 rpm and the efficiency is about 21.22 % of the injection power.
