Double bars and single wheel rotary combustion engine

A rotary engine assembled by at least one engine module while said engine module comprising:

• an inner circular chamber comprises a cylindrical cavity defined by a wall;
• a rotating power shaft rotates around a first rotary axis while operating coaxially within said inner circular chamber;
• a main wheel rotating around a second rotary axis within said inner circular chamber, wherein the second rotary axis is displaced from the first rotary axis;
• and
• an outward opening valve assembly comprising a rotating hemicycle profiled cam coupled to an abutment of a valve, effectuates said valve to move away from the cylindrical cavity to open a valve port and said rotating hemicycle profiled cam enforces the valve to move toward the cylindrical cavity to close the valve port and retaining the valve port closed up to a desired duration, driven by the power shaft wherein the power shaft rotates by a coupling among the main wheel, only two bars comprising of a first bar that is fixedly secured with said power shaft and a second bar that is hingedly secured with said power shaft and only one active combustion chamber demarcated therewith.