Valve system for opposed piston engines

An opposed piston engine and valve system therefor, comprising in combination:

• an engine case;
• at least one rotary cylinder disposed within the engine case, the cylinder having an internal wall and a valve port medially disposed therethrough, the valve port having an internal valve port wall;
• mutually opposed first and second pistons reciprocatingly disposed within the cylinder, the pistons and cylinder wall defining a variable volume combustion chamber therebetween;
• at least one variable radius cam channel formed circumferentially within the engine case, the cam channel surrounding the at least one rotary cylinder;
• a poppet valve disposed within the valve port, the valve including a plate having a face, a back opposite the face, and a periphery;
• a valve attachment hinge disposed between the periphery of the valve and the valve port wall adjacent the cylinder wall, the hinge pivotally connecting the valve to the rotary cylinder;
• at least one actuating arm extending generally radially outward from the back of the valve, the actuating arm having a distal end;
• and
• a cam channel follower extending from the distal end of the actuating arm, the follower being disposed within the cam channel, the follower following the cam channel and selectively opening and closing the valve in accordance with the variable radius of the cam channel.