Side Draft, Slide Valve Aspiration

A slide valve for an internal combustion engine that has at least one cylinder, the cylinder bordering gas inlet and gas outlet pathways, the slide valve adapted to be reciprocated between a gas conducting position and a spaced-apart gas blocking position within a cylindrical passageway having transverse gas ports, the slide valve comprising:

• at least a pair of spaced-apart, elongated, rigid, cylindrical sections connected by a reduced diameter neck, at least one of said sections adapted to be connected with a reciprocation actuator for moving the slide valve;
• each cylindrical section provided with a plurality of ring arrays, each ring array comprising at least one ring;
• wherein at least one sleeve section is adapted to periodically block said gas ports;
• and,
• wherein said sleeve neck facilitates gas flow through said transverse gas ports and said gas inlet and gas outlet pathways.

An internal combustion engine comprising:

• at least one cylinder;
• at least one power piston that reciprocates within said at least one cylinder;
• at least one gas pathway allowing gases into or out of said cylinder;
• at least one internal cylindrical tunnel disposed proximate said cylinder;
• at least one gas pathway transversely extending through said tunnel communicating with said cylinder;
• a slide valve that reciprocates within said tunnel, the slide valve comprising a pair of cylindrical sections concentric with said tunnel and at least one reduced diameter neck portion disposed between a pair of adjacent slide valve body sections that allows gases to move transversely through the slide valve;
• and,
• means for reciprocating the slide valve.