0.126cc水素ロータリーエンジンの自立駆動実験

Abstract

Recently, compact and high output power sources are demanded for versatile portable devices. Such power sources need to be environment-friendly. In this study, a 0.126cc hydrogen rotary engine was developed as an environment-friendly ultra-small power source. The hydrogen rotary engine (HRE) has high energy density, high power density and environment-friendly properties. In this work, we developed a small spark plug for self-operation of the HRE. In addition, we produced an engine starting device by using a propeller for reducing the rotational resistance of the device. In a visualized 0.126cc HRE, we observed sparks and combustion flame. Even in that case, the self-operation of the HRE could not be achieved. However, the exhaust gas temperature rose and the rotation speed of the starting device connected to the HRE became about 1000 rpm higher than in the case without the discharge spark in the HRE. This may have been due to assistance by the combustion pressure generated in the HRE