Sine rotary engine

A sine rotary engine comprising:

• a rotor housing (100) having an inlet pipe (110) and an outlet pipe (120) respectively formed therein, the rotor housing having an inner space (130) formed with a curved inner surface of the rotor housing and configured to allow fluid introduced through the inlet pipe (110) to fill the inner space;
• a power shaft (200) rotatably installed inside the rotor housing (100), the power shaft being installed at a position eccentric from a central point of the inner space (130);
• a reciprocating rotor (300) formed corresponding to a width of the inner space (130) of the rotor housing (100) and installed through a central portion of the power shaft (200) in a radial direction of the power shaft, wherein the reciprocating rotor is rotated inside the rotor housing (100) while performing linear reciprocating motion in the radial direction of the power shaft (200) according to a rotation angle thereof;
• and
• an eccentric shaft (400) formed to have a smaller diameter than a diameter of the power shaft (200) and rotatably installed in the rotor housing (100), wherein the eccentric shaft is connected to a central portion of the reciprocating rotor (300) and guides the reciprocating rotor (300) such that the reciprocating rotor has a constant rotational orbit, wherein:
• the rotor housing (100) has bearings installed therein, wherein the bearings are respectively installed in portions of the rotor housing, the portions allowing the power shaft (200) and the eccentric shaft (400) to be respectively installed therein, and wherein, for smooth rotational motion, a first bearing (500) is installed in the portion of the rotor housing, the portion allowing the power shaft (200) to be installed therein, and a second bearing (600) is installed in the portion of the rotor housing, the portion allowing the eccentric shaft (400) to be installed therein,
• the eccentric shaft (400) is installed in the rotor housing such that a central point of the eccentric shaft is located above a central point of the power shaft (200),
• the reciprocating rotor (300) has a first pin hole (310) formed in the central portion thereof, and the eccentric shaft (400) has a second pin hole (410) formed in a position eccentric from a central portion of the eccentric shaft, wherein the reciprocating rotor and the eccentric shaft are axially coupled to each other by a guide pin (420) inserted into the first pin hole (310) and the second pin hole (410),
• an internal shape of the rotor housing (100) is determined by a ratio of a length of the reciprocating rotor (300) to the diameter of the eccentric shaft (400), and the rotor housing is determined by an equation of sin(θ)+k or α cos(θ)+k, and
• in the equation, α represents the diameter of the eccentric shaft (400) (eccentric circle), k represents half of the length of the reciprocating rotor (300), 2k is equal to the length of the reciprocating rotor (300), and θ is an angle from 0 to 2π, wherein the θ corresponds to an angular range for traces of points drawn around an origin according to a value of a polar coordinate equation.