Engine

An engine comprising:

• an air compressor cylinder with a piston, and a combustion chamber cylinder with a second piston;
• a port connecting the air compression cylinder and the combustion chamber cylinder;
• said piston and said second piston each having a connecting rod;
• said piston, said second piston, and said connecting rods each having a linear movement;
• a plurality of seals having an outer shape registering to an interior surface of said combustion chamber cylinder, an outer side, and an inner surface, and each of said seals having an end;
• said piston and said second piston each connecting solidly to a connecting rod;
• said second piston having retainers each holding at least one of said seals between nearly parallel planes wherein each of said retainers is rotated about 90 degrees relative to each other and retains said seals and wherein said seals overlap at their ends;
• said second piston having said seals to said combustion chamber cylinder extending outwardly from center of said second piston to said chamber cylinder;
• said second piston having a mechanism moving said seals to said combustion chamber cylinder;
• and,
• said second piston having outer surface material containing an outer side of one of said seals and said retainer containing an inner surface of one of said seals.

An engine comprising:

• an air compressor cylinder with a piston, and a combustion chamber cylinder with a piston;
• a port connecting said air compression cylinder and said combustion chamber cylinder;
• said pistons each having a connecting rod;
• said pistons and said connecting rods each having a linear movement;
• a valve mechanism moving at least one valve, said valve mechanism having a continuous loop connecting two rotational components, said at least one valve having an open position and a closed position;
• said valve mechanism having at least one valve gear, at least two valve gear segments, at least one valve crank, at least one connecting rod, at least one rocker, and said at least one valve;
• said valve mechanism having more than one of said valve gear segment attaching to said continuous loop, said at least two valve gear segments engaging said at least one valve gear at intervals, said at least one valve gear connecting to said at least one valve crank, a valve connecting rod connecting to said at least one valve crank and said at least one rocker, said at least one rocker connected to said at least one valve;
• said at least two valve gear segments attaching to said continuous loop, one of said at least two valve gear segments being timed to operate said valve mechanism to close a valve before top dead center of either of said pistons and a second of said at least two valve gear segments being timed to operate said valve mechanism to open a valve at or near bottom dead center of either of said pistons;
• and,
• said valve operating mechanism having said at least two valve gear segments engaging said at least one valve gear at intervals turning said at least one valve gear 180 degrees on each passage of one of said valve gear segments.

A machine boring a cylinder comprising:

• a shaft centered and positioned through said cylinder;
• two shaft bearing support structures receiving said shaft;
• a means to center said shaft bearing support structures;
• a tool bit holder attaching to said shaft and a tool bit in said tool bit holder;
• a means to rotate and move said shaft with said tool bit holder thereon;
• a means to adjust the cutting depth of said tool bit;
• and,
• a means to adjust the position of said tool bit;
• wherein said machine is adapted to prepare an interior surface of a cylinder operatively connected to an engine.