Abstract
Recently, a small and high output power sources are required with advancement of portable equipments. In addition, environment-friendly properties are needed in the power sources. At present, lithium-ion batteries and fuel cells are used widely as the output power sources. But there are some problems in these sources, such as low energy density and low output power density. On the other hand, internal-combustion engines have high energy and high power density. In particular, the rotary engine is simple in the structure, so it is suitable for small and high output power source. Furthermore, hydrogen, one of environment-friendly fuel, can be treated stably in the rotary engine. In this paper, output power characterization of the 20cc hydrogen rotary engine was carried out as a first step for developing the small and high output power source with environment-friendly characteristics. The obtained results of the output power and the torque were compared with those of the gasoline rotary engine.
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