Rotational valve for two stroke engine

A two stroke internal combustion engine having intake and exhaust ports, a rotational valve for controlling the timing of intake and exhaust ports, comprising:

• an engine block forming at least one cylinder with a central axis;
• a piston adapted to reciprocate linearly within said at least one cylinder along said central axis between a top dead center position and a bottom dead center position;
• a crank shaft assembly mounted within said engine block, said crank shaft assembly including a drive shaft with a drive shaft axis and an eccentric connecting rod pin with a pin axis whose axis to be different from drive shaft axis;
• an intake port positioned and adapted to permit ingress of air and fuel mixture into said cylinder and an exhaust port positioned and adapted to permit egress of exhaust gases from said cylinder;
• an upper section of the cylinder, which is separated by a reciprocating piston to accommodate a spark plug to ignite the air & fuel mixture and perform the combustion stage;
• an airtight bottom section of the cylinder, wherein the cylinder is separated by the piston;
• a transfer port is adapted into the cylinder block to let compressed air in the bottom section of the cylinder to the top section of the cylinder;
• a rotational valve comprising a body, said rotational valve further comprising at least one opening on said body;
• wherein said rotational valve is configured to transiently align with the intake port to permit ingress of a mixture of fuel and air into the cylinder during intake cycle, and wherein said rotational valve is further configured to transiently align with the exhaust port to permit egress of exhaust gases from the cylinder, thereby controlling the intake and exhaust port opening timing and durations.