An internal combustion engine system, includes a two-stroke piston machine having a cylinder for accommodating a reciprocating piston, and further at least one valve for regulating a flow of fluid medium; the ICE system further comprising a rotatable crankshaft for operating the reciprocating piston. The rotatable crankshaft comprises an integrated cam lobe arranged to operate the at least one valve of the two-stroke piston machine.

This invention has two main embodiments. An opposed piston 2-stroke axial engine and a 4-stroke axial engine. The opposed piston two stroke also offers an option of a novel cylinder deactivation design. Both, two stroke and four stroke engines share novel systems for coupling piston reciprocation to shaft rotation, piston and piston ring lubricant distribution, and provision for reacting out piston side load with minimum mechanical friction

This invention has two main embodiments. An opposed piston 2-stroke axial engine and a 4-stroke axial engine. The opposed piston two stroke also offers an option of a novel cylinder deactivation design. Both, two stroke and four stroke engines share novel systems for coupling piston reciprocation to shaft rotation, piston and piston ring lubricant distribution, and provision for reacting out piston side load with minimum mechanical friction

A system including a camshaft and a camshaft sleeve. The camshaft sleeve has a sleeve-shaped main body for receiving an end region of the cam-shaft. The main body includes a joining region, a bearing region and a seat region. The main body and the camshaft are configured in such a way that, in the mounted state, the cam-shaft is joined in the joining region to the camshaft sleeve, the system having, in the bearing region, a clearance between the camshaft and the camshaft sleeve, and the camshaft and the camshaft sleeve are connected to one another in the seat region via a positively locking means and/or a frictionally lock, in particular a toothing system.

In an exemplary embodiment, an internal combustion engine, in which a valve is opened and closed when a piston reciprocates in a cylinder, has a configuration to perform repeatedly the following combined strokes: an intake stroke.fwdarw.a compression stroke.fwdarw.a combustion stroke.fwdarw.an exhaust stroke in a four-cycle internal combustion engine are combined with an intake and compression stroke.fwdarw.a combustion and exhaust stroke in a two-cycle internal combustion engine. The internal combustion engine can reduce pumping loss in a six-cycle internal combustion engine and increase the output.

In an exemplary embodiment, an internal combustion engine, in which a valve is opened and closed when a piston reciprocates in a cylinder, has a configuration to perform repeatedly the following combined strokes: an intake stroke.fwdarw.a compression stroke.fwdarw.a combustion stroke.fwdarw.an exhaust stroke in a four-cycle internal combustion engine are combined with an intake and compression stroke.fwdarw.a combustion and exhaust stroke in a two-cycle internal combustion engine. The internal combustion engine can reduce pumping loss in a six-cycle internal combustion engine and increase the output.

A cam follower is provided. The cam follower includes a polycrystalline diamond element, including an engagement surface. The engagement surface of the polycrystalline diamond element is positioned on the cam follower for sliding engagement with an opposing engagement surface of a cam. The cam includes at least some of a diamond reactive material.

A cam follower is provided. The cam follower includes a polycrystalline diamond element, including an engagement surface. The engagement surface of the polycrystalline diamond element is positioned on the cam follower for sliding engagement with an opposing engagement surface of a cam. The cam includes at least some of a diamond reactive material.

An internal combustion engine system, includes a two-stroke piston machine having a cylinder for accommodating a reciprocating piston, and further at least one valve for regulating a flow of fluid medium; the ICE system further comprising a rotatable crankshaft for operating the reciprocating piston. The rotatable crankshaft comprises an integrated cam lobe arranged to operate the at least one valve of the two-stroke piston machine.

In an internal combustion engine that includes a cylinder block and a cylinder head, and has a cam chain chamber on a side of the cylinder block, a beam member that traverses the cam chain chamber is disposed in the cam chain chamber.