Disc-type rotary engine

A disc-type rotary engine comprising;

• an engine casing having a cylindrical inner circumferential wall;
• a non-rotary disc in which an undulatory concave/convex surface in a stream line shape having at least two radial concave portions and two radial convex portions alternately is formed on one end and which is fitted to the inner circumferential wall of the casing coaxially and air-tightly;
• a rotary disc in which a radial concave/convex surface of the same shape as that of the undulatory concave/convex surface of the non-rotary disc is formed on one end, and which is fitted to the inner circumferential wall of the casing airtightly and rotatably such that the convex portions of the concave/convex surface are in a sliding contact with the undulatory concave/convex surface of the non-rotary disc;
• a rotary power shaft which rotates interlocking with the rotary disc and which is protruded at one end to the outside of the casing;
• a resilient means for resiliently engaging the non-rotary disc which is made slidable reciprocally in the axial direction along with the rotation of the rotary disc to the concave/convex surface of the mating rotary disc;
• a fuel supply channel in communication with a vicinity of a slope of a first concave portion formed on the non-rotary disc at which a convex portion of the rotary disc gets into sliding engagement with said concave portion;
• an exhaust port in communication with a vicinity of a slope of a second concave portion formed on the non-rotary disc at which the convex portion of the rotary disc gets out of sliding engagement with said concave portion,
• a gas reservoir combustion chamber opened to a vicinity of a slope of a second concave portion formed on the non-rotary disc at which the convex portion of the rotary disc gets into sliding engagement with said concave portion, with an ignition plug being disposed at the inside of said reservoir;
• and
• a compression communication channel for communicating from a vicinity of a slope of the first concave portion formed on the non-rotary disc at which the convex portion of the rotary disc gets into sliding engagement with said concave portion to the gas reservoir fuel chamber by way of a check valve.