Opposed piston engine with variable compression ratio

1. An opposed piston engine comprising:

a first crank case contained within said engine;

a second crank case contained within said engine and opposed to said first crank case;

a first crank shaft contained within said first crank case;

a second crank shaft contained within said second crank case; and

a cylinder case operably connected to said first and second crank cases,

wherein at least one of said crank cases threadedly communicates with said cylinder case to adjust the position of said first and/or said second crankshafts, respectively.

2. The engine of claim 1 wherein both of said crank cases threadedly communicate with said cylinder case.

3. The engine of claim 2 further comprising:

a first connection member connected to said first crank case and to said cylinder case for independently adjusting a position of the first crank shaft and the linear position of said first crank case, with respect to said cylinder case; and

a second connection member connected to said second crank case and to said cylinder case for independently adjusting a position of the second crank shaft and the linear position of said second crank case with respect to said cylinder case,

said first and second connection members in coaxial relation with a cylinder contained within said cylinder case.

4. The engine of claim 3 wherein:

said first connection member is threadedly received by said first crank case and by said cylinder case; and

said second connection member is threadedly received by said second crank case and by said cylinder case,

thereby facilitating the adjustment of the position of the first and second crankshafts, and thereby modifying the volume of a combustion chamber defined within said cylinder case.

5. The engine of claim 3 further comprising:

at least one actuator for actuating one or both of said first and second connection members.

6. A method of customizing the combustion ratio of an opposed piston engine comprising the steps of:

providing a first crank case and a second crank case opposed to the first crank case within the engine;

providing a first crank shaft contained within said first crank case, and, providing a second crank shaft contained within said second crank case;

providing a cylinder case in threaded communication with at least one of the first and second crank cases; and

moving at least one of the crank cases about the cylinder case to a predetermined position, thereby moving at least one respective crankshaft within the at least one crank case to thereby modify the size of an associated combustion chamber contained within the cylinder case.

7. The method of claim 6 wherein both of said crank cases are linearly moved about the cylinder casing.

8. An engine incorporating the method of claim 6 .