Abstract: An opposed-piston, opposed-cylinder OPOC engine is disclosed in which the central axis of the two cylinders is collinear. In four-stroke engines, this is possible with a built up crankshaft. Disclosed are connecting rod configurations that are suitable for a two-stroke engine that can be assembled to a unitary crankshaft, including both pullrods in tension and pushrods in compression. The configuration includes pistons arranged symmetrically, but with offset timing of the intake and exhaust pistons. The offset timing leads to a slight imbalance which can be partially overcome by having the center of gravity of the crankshaft offset from the axis of rotation.

Abstract: The horizontally opposed center fired engine improves on the traditional design of the horizontally opposed engines and center fired engines with a better engine geometry. The present invention utilizes four pairs of opposing pistons to compress a larger volume of air-fuel mixture within four different cylinders. The four different cylinders are radially positioned around a center axle in order to achieve a perfectly symmetric engine geometry. The center axle consists of two different shafts spinning in two different directions, which could drastically reduce engine vibrations in the present invention. Engine vibrations are caused by a change in engine speed and result in a loss of energy. Due to the design, the present invention will only experience energy loss in the form of entropy and friction. Thus, the present invention can convert a higher percentage of chemical energy into mechanical energy than any other internal combustion engine.

Abstract: A combination bearing beam and crankshaft-interactive oil management device for an internal combustion engine includes longitudinally and laterally extending beam elements attached to the engine's main bearing caps. Baffle members extend between the beam elements and include not only scraper elements for capturing oil adhering to the engine's rotating assembly, but also windows for allowing captured oil to flow into the engine's oil sump.

Abstract: A crankcase scavenged internal combustion engine includes a cylinder and a piston reciprocating along the cylinder wall. At least one auxiliary duct is arranged with an auxiliary port in the cylinder wall. An inlet is divided into: a fuel inlet leading to a fuel port and an air inlet leading to an air port. The auxiliary port, fuel port and air port can be opened and closed by the piston. The piston also comprises a transfer space, which mouth edges are limited by the piston periphery, and which, in at least one piston position, creates a connection between the fuel port and the auxiliary duct's port, so that fuel can be supplied to the auxiliary duct via the auxiliary port, and then, after the port later on has been opened by the piston, can flow into the combustion chamber.