Patent ID: 9482092
Filing Date: 2016-11-01
CPC Classification: F01C

Claim Text:
1. A rotary internal combustion engine, comprising: a top housing constructed with a suction port and an exhaust port, and a bottom housing arranged to receive a crank assembly and a cam assembly such that the crank assembly and the cam assembly are assembled in between the top housing and the bottom housing; a crank rotatably placed above the bottom housing and a set of semi circular cranks provided at a top surface of the crank plate to travel along with the crank plate, wherein the set of semi circular cranks includes two semi circular cranks positioned opposite to each other and aligned to the crank plate and a crank shaft arranged to drive along with the crank plate; wherein the cam assembly has a set of cams, each having radius on four sides and an air path on its bottom, placed above the crank plate and arranged to pivot through pivot pins, such that the set of cams and the set of semi circular cranks revolve to form an eccentricity with an outer cavity ring and an inner cavity ring; the outer cavity ring is provided to surround the set of semi circular cranks above the crank plate and the inner cavity ring placed inside the set of semi circular cranks, wherein upon rotation of the crank plate and the set of semi circular cranks, two variable volume outer chambers are formed in between the set of semi circular cranks and the outer cavity ring, and two variable volume inner chambers are formed in between the set of semi circular cranks and the inner cavity ring, wherein a set of air guide paths are formed at the bottom of the crank plate and the set of semi circular cranks to communicate the two variable volume inner chambers and the two variable volume outer chambers.