The engine, as seen in the moving model, can be designed as a two or four cycle engine and can also use any aspiration, exhaust or valve designs found in today’s gas or diesel designs. The engine is about ½ as big as today engines due to the location of the crankshafts and the use of two cylinders in one cylinder bore. The patented movement of the pistons and the use of piston rods connected to two cranks allows for straight up and down movement of the pistons.

With the movement of the piston always parallel to the cylinder wall there is little friction and thus less cylinder and ring ware. The moment of inertia is also improved due to the lower mass. This allows for a faster working engine able to attain higher revs.

When four cylinders are inline, two cylinder pairs opposed, there is no need for counter balances on the crankshaft.  This also saves weight, size and reduces complexity.

All in all the engine is smaller, lighter and less complex then existing designs and can also offer solutions for pumps, compressors and other type energy transfer from piston devices.  A version called the Otto-Dougherty-Atkinson (ODA) allows for most efficient design in one package.