Almost zero combustion chamber

A common diesel or gas cycle engine comprising:

• an engine block, at least one cylinder, a crankshaft, a valve train, and a cylinder head,
• said cylinder head surface being flat and defining as upper boundary of a primary combustion chamber,
• each of the at least one cylinder having a primary piston reciprocating therein, said primary piston having a flat head surface and defining a lower boundary of the primary combustion chamber,
• said primary combustion chamber being defined as the area between the flat cylinder head surface and flat piston head surface,
• intake and exhaust port affixed in the cylinder head with intake and exhaust valves having intake and exhaust valve heads,
• said intake and exhaust valve heads being flush with the surface of the cylinder head when the intake and exhaust valves are closed,
• the flat head surface of the primary piston approaching the flat cylinder head surface, so as to result in substantially zero combustion space in the primary combustion chamber at the top dead center position of the engine stroke,
• a supplemental piston chamber,
• a supplemental piston, having a flat head surface and reciprocating within the supplemental piston chamber,
• a conduit connecting the primary combustion chamber and the supplemental piston chamber,
• a supplemental camshaft, supplemental piston with flat piston head, supplemental wrist pin, supplemental wrist pin keepers, supplemental wrist pin roller, and a supplemental cam follower with bracket and springs, comprise a supplemental piston mechanism,
• said supplemental piston mechanism is powered by said crankshaft through said valve train,
• said supplemental wrist pin roller communicates motion from the supplemental camshaft to the supplemental piston,
• the supplemental cam follower has bracket legs, which straddle the roller, and resides on the supplemental wrist pin;
• and
• an upper surface, holding compression springs, forces a wrist pin roller in constant communication between the supplemental piston and supplemental camshaft.