Patent ID: 8662051
Filing Date: 2014-03-04
Classification: F01C,F02B,Y02T

Abstract:
1. A rotary engine, comprising: a rotor housing having a cylindrical cylinder; a fuel-intake path and an exhaust-gas discharge path opening up into said cylinder; a combustion chamber being within an inner wall of said cylinder and formed between the openings of said fuel-intake path and said exhaust-gas discharge path; a cylindrical flywheel rotor located on an output shaft passing through the center of said cylinder, and wherein the cylindrical flywheel rotor forms a circular space between the flywheel rotor and inner wall of said cylinder, has a piston head that is formed at a location on the outer surface of the flywheel rotor such that the piston head comes in contact with said inner wall of said cylinder; a spark plug provided in said cylinder with a tip end positioned inside said combustion chamber; a free-pivoting fuel-intake valve and a free-pivoting circular-space closing valve located in said cylinder near the combustion chamber on the downstream side in the direction of rotation of the rotor configured to switch between a first position and a second position, wherein the free-pivoting circular-space closing valve has a support shaft on the upstream side of said opening of said fuel-intake path in the direction of rotation of said rotor, the tip end thereof extending into said opening; and wherein the free-pivoting fuel-intake valve is positioned further outward than said circular-space closing valve and has a support shaft on the downstream side of said opening of said fuel-intake path, the tip end thereof extending into said opening; wherein said first position includes one of; fuel-intake and circular-space closing valve drive means for operating said fuel-intake and circular-space closing valve; an explosion pressure stopper valve located in said cylinder near said combustion chamber on the upstream side in the direction of rotation of said rotor configured to switch between closing and opening said circular space; explosion pressure stopper valve drive means for operating said explosion pressure stopper valve; an exhaust valve configured to open and close said discharge path; and exhaust valve drive means for operating said exhaust valve; wherein a combined fuel-intake and exhaust-gas discharge stroke occurs when said free-pivoting fuel-intake valve and said free-pivoting circular-space closing valve are in said first position, said explosion pressure stopper valve closes said circular space and said exhaust valve opens said discharge path; wherein a compression stroke occurs when said free-pivoting fuel-intake valve and said free-pivoting circular-space closing valve are in said second position, said explosion pressure stopper valve opens said circular space and said exhaust valve closes said discharge path; and wherein a combustion stroke occurs when said free-pivoting fuel-intake valve and said free-pivoting circular-space closing valve are in said first position, said explosion pressure stopper valve closes said circular space, and in said explosive combustion process said spark plug fires.