Control device to achieve variable compression ratio for triangle rotary engine

An actuator for a rotary engine comprising:

• an eccentric shaft comprising an electric three-jaw having first, second, and third claw tops each connected to a respective first, second, and third inner support arc blocks;
• a triangle rotor comprising:
• a rotor pocket formed in an outer surface of the triangle rotor,
• an interior opening within the rotor, and
• a through hole connecting the rotor pocket and the interior opening;
• a variable volume actuator comprising a variable volume plate and an outer support arc block, wherein:
• the variable volume plate is located within the rotor pocket,
• the outer support arc block is located within the interior opening,
• the variable volume plate and the outer support arc block are fixedly connected to one another by a connecting cylinder that extends through the through hole,
• the variable volume actuator is configured to telescopically move with respect to the rotor;
• and
• a control system configured to control expansion and contraction of the electric three-jaw based on electrical signals received at the control system through a wire passing through the eccentric shaft, causing movement of the first, second, and third claw tops and their corresponding respective first, second, and third inner support arc blocks to actuate the variable volume actuator such that the variable volume plate moves within the rotor,
• wherein when the actuator is used in the rotary engine, movement of the variable volume plate within the rotor pocket achieves different compression ratios for the rotary engine, further wherein the variable volume plate is arranged with a seal groove comprising a wave spring and a sealing strip installed on an outside of the wave spring to form a seal between the variable volume plate and the rotor pocket.