Sliding valve aspiration system

An improved head adapted to be secured to an internal combustion engine of the type comprising a rigid block, a primary crankshaft rotatably disposed within said block, at least one cylinder defined in said block, at least one power piston driven by said crankshaft and reciprocated within said at least one cylinder, the head comprising:

• means for attaching the head to said block over said at least one piston;
• at least one pair of exhaust ports formed in said head adapted to be disposed proximate said piston;
• at least one pair of intake ports formed in said head adapted to be disposed proximate said piston;
• an elongated, tubular exhaust tunnel disposed in said head proximate said head exhaust ports, said exhaust tunnel adapted to be oriented transversely with respect to said cylinder;
• a tubular exhaust sleeve disposed within said exhaust tunnel and in fluid flow communication therewith, the exhaust sleeve comprising a pair of exhaust ports generally aligned with said head exhaust ports;
• an elongated, tubular intake tunnel disposed in said head proximate said head intake ports, said intake tunnel adapted to be oriented transversely with respect to said cylinder;
• a tubular intake sleeve disposed within said intake tunnel and in fluid flow communication therewith, the intake sleeve comprising a pair of intake ports generally aligned with said head intake ports;
• a tubular, sliding exhaust valve disposed within said exhaust sleeve, said exhaust valve comprising an exhaust gas port and an elongated internal tubular passageway in fluid flow communication with said valve exhaust gas port for exhausting gases and a plurality of coaxially mounted, spaced apart sealing rings;
• a tubular, sliding intake valve disposed within said intake sleeve, said intake valve comprising an intake gas port and an elongated, internal tubular passageway in fluid flow communication with said valve intake gas port for intaking a raw fuel/air mixture and a plurality of coaxially mounted, spaced apart sealing rings;
• a slide valve crankshaft rotatably mounted within said head for reciprocating said sliding exhaust and intake valves in response to rotation of said primary crankshaft, such that the exhaust valve gas port is aligned with the exhaust ports in said exhaust sleeve during an exhaust stroke of said piston and otherwise said exhaust valve closes said sleeve and head exhaust ports, and such that the intake valve gas port is aligned with the intake ports in said intake sleeve during an intake stroke of said piston and otherwise said intake valve closes said sleeve and head intake ports;
• wherein said slide valve crankshaft has an axis of rotation oriented generally perpendicularly with respect to said slide valves;
• valve connecting rods mechanically connecting said slide valve crankshaft with said sliding intake and sliding exhaust valves;
• and,
• wherein the ports forming said at least one pair of exhaust ports in said exhaust sleeve are separated from one another by bridges that contact rings on said exhaust valve, and the ports forming said at least one pair of intake ports in said intake sleeve are separated from one another by bridges that contact rings on said intake valve.

An internal combustion engine comprising:

• a rigid block;
• a primary crankshaft rotatably disposed within said block;
• at least one cylinder defined in said block;
• at least one power piston driven by said crankshaft, said at least one power piston reciprocated within said at least one cylinder;
• a head over said at least one piston;
• a combustion chamber between said piston and said head;
• at least one pair of exhaust ports formed in said head disposed proximate said combustion chamber;
• at least one pair of intake ports formed in said head disposed proximate said combustion chamber;
• an elongated, tubular exhaust tunnel disposed in said head proximate said head exhaust ports;
• an elongated, tubular intake tunnel disposed in said head proximate said head intake ports;
• a tubular, sliding exhaust valve disposed within said cylindrical exhaust tunnel in said head, said exhaust valve comprising an exhaust gas port and an elongated internal tubular passageway in fluid flow communication with said valve exhaust gas port for exhausting gases and a plurality of coaxially mounted, spaced apart sealing rings;
• a tubular, sliding intake valve disposed within said cylindrical intake tunnel in said head, said intake valve comprising an intake gas port and an elongated, internal tubular passageway in fluid flow communication with said valve intake gas port for intaking a raw fuel/air mixture and a plurality of coaxially mounted, spaced apart sealing rings;
• a slide valve crankshaft rotatably mounted within said head for reciprocating said sliding exhaust and intake valves in response to rotation of said primary crankshaft, such that the exhaust valve gas port is aligned with the exhaust ports in said head during an exhaust stroke of said piston and otherwise said exhaust valve closes said head exhaust ports, and such that the intake valve gas port is aligned with the intake ports in said head during an intake stroke of said piston and otherwise said intake valve closes said head intake ports;
• wherein said slide valve crankshaft has an axis of rotation oriented generally perpendicularly with respect to said slide valves;
• valve connecting rods mechanically connecting said slide valve crankshaft with said sliding intake and sliding exhaust valves;
• and,
• wherein the ports forming said at least one pair of exhaust ports in said head are separated from one another by bridges that contact rings on said exhaust valve, and the ports forming said at least one pair of intake ports in said head are separated from one another by bridges that contact rings on said intake valve.

An internal combustion engine comprising:

• a rigid block;
• a primary crankshaft rotatably disposed within said block;
• at least one cylinder defined in said block;
• at least one power piston driven by said crankshaft, said at least one power piston reciprocated within said at least one cylinder;
• a head over said at least one piston;
• a combustion chamber between said piston and said head;
• head exhaust ports formed in said head disposed proximate said combustion chamber;
• head intake ports formed in said head disposed proximate said combustion chamber;
• an elongated, tubular exhaust tunnel disposed in said head proximate said head exhaust ports, said exhaust tunnel oriented transversely with respect to said cylinder;
• a tubular exhaust sleeve disposed within said exhaust tunnel and in fluid flow communication therewith, the exhaust sleeve comprising a pair of exhaust ports generally aligned with said head exhaust ports;
• an elongated, tubular intake tunnel disposed in said head proximate said head intake ports, said exhaust tunnel oriented transversely with respect to said cylinder;
• a tubular intake sleeve disposed within said intake tunnel and in fluid flow communication therewith, the intake sleeve comprising a pair of intake ports generally aligned with said head intake ports;
• a tubular, sliding exhaust valve disposed within said exhaust sleeve, said exhaust valve comprising an exhaust gas port and an elongated internal tubular passageway in fluid flow communication with said valve exhaust gas port for exhausting gases and a plurality of coaxially mounted, spaced apart sealing rings;
• a tubular, sliding intake valve disposed within said intake sleeve, said intake valve comprising an intake gas port and an elongated, internal tubular passageway in fluid flow communication with said valve intake gas port for intaking a raw fuel/air mixture and a plurality of coaxially mounted, spaced apart sealing rings;
• a slide valve crankshaft rotatably mounted within said head for reciprocating said sliding exhaust and intake valves in response to rotation of said primary crankshaft, such that the exhaust valve gas port is aligned with the exhaust ports in said exhaust sleeve during an exhaust stroke of said piston and otherwise said exhaust valve closes said sleeve and head exhaust ports, and such that the intake valve gas port is aligned with the intake ports in said intake sleeve during an intake stroke of said piston and otherwise said intake valve closes said sleeve and head intake ports;
• wherein said slide valve crankshaft has an axis of rotation oriented generally perpendicularly with respect to said slide valves;
• valve connecting rods mechanically connecting said slide valve crankshaft with said sliding intake and sliding exhaust valves;
• and,
• wherein the ports forming said at least one pair of exhaust ports in said exhaust sleeve are separated from one another by bridges that contact rings on said exhaust valve, and the ports forming said at least one pair of intake ports in said intake sleeve are separated from one another by bridges that contact rings on said intake valve.