Internal combustion engine with dual-chamber cylinder

A dual chamber cylinder engine/compressor comprising:

• a housing comprising a first cylindrical cavity and a first piston disposed therein, said first piston facilitates dividing said first cylindrical cavity into a first upper chamber and a first lower chamber;
• said housing comprising a second cylindrical cavity having a second piston disposed therein, said second piston facilitates dividing said second cylindrical cavity in a second upper chamber and a second lower chamber;
• at least one head on top of said first and second upper chambers for enclosing said cylindrical cavities;
• said first and second pistons each having respective first and second piston rods extending in a fixed perpendicular orientation from a bottom of each respective piston;
• a low friction seal located on a bottom of each of said first cylindrical cavity and said second cylindrical cavity to allow sealed constrained linear movement of said piston rods;
• said piston rods are secured to an elliptical shaft to convert reciprocating rectilinear motion into rotary motion;
• an inlet and an inlet check valve on each of said first and second lower chambers for bringing air into said first and second lower chambers when said pistons are on an up stroke;
• an outlet and an outlet check valve on said first and second lower chambers wherein compressed air is pushed out through said outlet and outlet check valve when said pistons are on a down stroke;
• said compressed air from a first lower chamber is transferred to at least one of a first upper chamber and said second upper chamber;
• at least one spark plug and at least one fuel injector located in said head;
• at least one piston air valve that allows high pressure air from at least one of said first upper chamber and said second upper chamber to enter at least one of said first lower chamber and said second lower chamber after closing at least one exhaust valve, wherein said piston air valve further comprises:
• at least a piston valve that is held closed by a spring and opens by at least one of said first piston and said second piston pressing on a stem of said piston valve;
• at least one vent hole that allows equalization of pressure above and below said piston air valve;
• and
• at least one fuel injection hole that allows for fuel injector through said piston valve;
• and
• wherein said compressed air is used to supercharge said engine.