| 摘要 |
<p>A rotary output shaft is born at an eccentric position of a casing arranged with a pair of chambers coaxially. A pair of rotors are fixed, at the center thereof, to the output shaft and arranged eccentrically in respective chambers such that the rotors rotate while sliding, at a part of the circumferential surface thereof, on the inner circumferential surface of the chamber. A shield plate is fitted slidably in the radial direction of the shaft of each rotor and urged resiliently such that the forward end thereof abuts against the inner circumferential wall of the chamber. One chamber has a fuel suction port communicating with a void on one side in the rear of the rotor sliding part, and a compressed gas delivery port communicating with a void on the other side in front of the rotor sliding part. The other chamber has an explosion gas jet port opened to a microgap in the vicinity of the rear end at the rotor sliding part, and a combustion gas exhaust port communicating with a void in front of the rotor sliding part. The compressed gas delivery port and the explosion gas jet port are allowed to communicate through a compressed gas accumulation passage provided with an ignition chamber. Phase angle of the pair of rotors is set such that the shield plate of the other rotor is located in front of the microgap of the explosion gas jet port when the shield plate of one rotor compresses fuel gas at a desired compression ratio.</p> |
