Illustration: Rotary Engine with Increased Hydrogen Power

Power generated by a gaseous fuel, such as hydrogen, is relatively low because of its large volume ratio in the air-fuel mixture, reducing the air-intake volume. In order to solve this problem with a hydrogen rotary engine, we adopted a method whereby we take in only the air first, and then inject the hydrogen afterwards to create the mixture. As each intake-exhaust cycle of a rotary engine takes one and half times as long a full cycle of a reciprocating engine, we can obtain enough air and hydrogen.