A connecting rod for an internal combustion engine, the connecting rod including: an upper section; a lower section; a side plate; an oil splatter; the upper section has a Y-shape including a handle and two split ends with a semicircular split angle between the split ends; the handle includes a central bore in an upper end; the lower section has a U-shape with a semicircular angle between split legs of the U-shape; the split legs of the lower section connect via fastening devices to the split ends, the upper section forming an opening having a circular shape; and the circular opening is adapted to connect with a crankshaft of an engine.

A piston assembly includes a piston head for reciprocating back and forth within a cylinder of an engine, an upper rod coupled to the piston head at one longitudinal end of the upper rod and fixed relative to the piston head, and a lower rod rotatably coupled to an opposite longitudinal end of the upper rod, the lower rod configured to pivot about the opposite longitudinal end of the upper rod. The lower rod is configured to couple to a crankshaft at a longitudinal end of the lower rod opposite the upper rod. Methods of forming a piston assembly and engines incorporating such piston assemblies are also disclosed.

Systems and methods are described for a reciprocating mechanism. The system includes at least one axially translating y-axis component configured to reciprocate substantially along a y-axis with a reciprocating motion of a piston assembly relative to a base. The system also includes at least one x-axis component slidingly coupled via at least one bearing assembly to and translating with the at least one y-axis component along the y-axis. The at least one x-axis component is configured to reciprocate substantially perpendicularly to the y-axis relative to the at least one y-axis component, and includes an orbital output component and an orbital linking component disposed substantially concentric with the orbital output component. The system also includes a stationary output component rotatably attached to the base in a direction that is substantially perpendicular to both the x-axis and y-axis, and a stationary linking component rotatably attached to the base in a direction that is substantially concentric with the stationary output component.

Proposed is a hydraulic cylinder rod in which a rod eye is robustly coupled to a hybrid round rod for weight reduction. To this end, the hydraulic cylinder rod is configured with a hybrid round rod including a metal tube and a composite material round rod provided for weight reduction inside the metal tube, wherein a side of the metal tube is formed to be relatively longer than the length of the composite material round rod to thereby provide a space defined by a length difference therebetween; and a rod eye is coupled to the space.

Proposed is a hydraulic cylinder rod in which a rod eye is robustly coupled to a hybrid round rod for weight reduction. To this end, the hydraulic cylinder rod is configured with a hybrid round rod including a metal tube and a composite material round rod provided for weight reduction inside the metal tube, wherein a side of the metal tube is formed to be relatively longer than the length of the composite material round rod to thereby provide a space defined by a length difference therebetween; and a rod eye is coupled to the space.

An internal combustion may include a cylinder having a first combustion chamber at one end and a second combustion chamber at an opposing end, first and second cylinder heads located at an end of the first and second combustion chambers, respectively, and a double-faced piston slidably mounted within the cylinder. The piston may be configured to move in the cylinder in a first stroke from one end to another. The first stroke may include an expansion stroke portion and a non-expansion stroke portion. The non-expansion stroke portion may include a momentum stroke portion. The non-expansion stroke portion may include a scavenging phase. The engine may further include first and second piston rod portions extending from opposite faces of the piston. Passageways in the piston rod portions may be configured to communicate gases between a combustion chamber and other locations.

An internal combustion may include a cylinder having a first combustion chamber at one end and a second combustion chamber at an opposing end, first and second cylinder heads located at an end of the first and second combustion chambers, respectively, and a double-faced piston slidably mounted within the cylinder. The piston may be configured to move in the cylinder in a first stroke from one end to another. The first stroke may include an expansion stroke portion and a non-expansion stroke portion. The non-expansion stroke portion may include a momentum stroke portion. The non-expansion stroke portion may include a scavenging phase. The engine may further include first and second piston rod portions extending from opposite faces of the piston. Passageways in the piston rod portions may be configured to communicate gases between a combustion chamber and other locations.

A hydraulic rod in reciprocating movement within a barrel of a hydraulic cylinder along a longitudinal direction of the barrel, and a method of manufacturing thereof, a surface finish of the rod comprising valleys, wherein the rod further comprises microporosities on its surface, the microporosities having a depth at least equal to a depth of the valleys.

A hydraulic rod in reciprocating movement within a barrel of a hydraulic cylinder along a longitudinal direction of the barrel, and a method of manufacturing thereof, a surface finish of the rod comprising valleys, wherein the rod further comprises microporosities on its surface, the microporosities having a depth at least equal to a depth of the valleys.

The present invention relates to a cooling device (8) comprising: —a housing (22); —a crank (28) rotationally movable relative to the housing (22); —a piston (16); —a coupling component (34) rotationally mounted on the crank (28), the coupling component (34) having a first edge (54) facing the piston (16) and a second edge (56) opposite the first edge (54); —a deformable element (64) integrated in the coupling component (34) and integrated in the piston (16), the deformable element (64) being configured to translationally move the piston (16) relative to the housing while deforming, when the crank (28) is rotated relative to the housing (22), the deformable element (64) being integrated in the second edge (56) of the coupling component (34).