The present converter for converting reciprocating motion into rotary motion comprises a pair of rotors counter-rotating in axial alignment, said rotors having rotor magnets and auxiliary rotor magnets fastened thereon, and a pair of rods moving reciprocally in opposite directions relative to one another along the axis of rotation of the rotors, said rods having rod magnets and auxiliary rod magnets fastened thereon, wherein at least some of the rotor magnets and/or the rod magnets are arranged such that their poles are disposed on several concentric cylindrical working surfaces simultaneously.

External combustion engine which comprises a first cylinder and a second cylinder, in which a first piston and a second piston are able to slide respectively. The first and second cylinder are fluidically connected with respect to each other for the passage of a heat-carrying fluid suitable to determine the cyclical movement of the first piston and the second piston. The external combustion engine also comprises a drive shaft rotating around an axis of rotation, and with which crank means are solidly associated, provided with at least a first pin and a second pin having pivoting axes parallel to each other, and also disposed distanced radially from the axis of rotation. The external combustion engine also comprises first and second kinematic connection means suitable to connect respectively the first pin and the second pin to the first piston and respectively to the second piston. The first pin and the second pin are disposed with the respective pivoting axes angularly offset so as to be angled by a desired angular amplitude equal to a first acute angle with respect to the axis of rotation.

A hydraulic assembly comprising: a rotational member; a plurality of hydraulic chambers arrayed about a center axis, each of the plurality of hydraulic chambers exhibiting a first end, a second end, a wall extending from the first end to the second end and an opening along the wall between the first end and the second end; and a plurality of pistons each positioned within a respective one of the plurality of hydraulic chambers, wherein each of the plurality of pistons further comprises a protrusion protruding from a side of the piston, the protrusion of each of the plurality of pistons extending, through the opening of the respective hydraulic chamber and arranged to contact the rotational member such that a force is applied between the rotational member and the respective piston.

A rotatable piston assembly for a reciprocating piston type hydraulic machine includes a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine.

The present converter for converting reciprocating motion into rotary motion comprises a pair of rotors counter-rotating in axial alignment, said rotors having rotor magnets and auxiliary rotor magnets fastened thereon, and a pair of rods moving reciprocally in opposite directions relative to one another along the axis of rotation of the rotors, said rods having rod magnets and auxiliary rod magnets fastened thereon, wherein at least some of the rotor magnets and/or the rod magnets are arranged such that their poles are disposed on several concentric cylindrical working surfaces simultaneously.

A hybrid vehicle HV is provided with an electric motor MT for generating vehicle drive force, an electrical generator GN for generating electric power to be supplied to the electric motor, a plurality of internal combustion engines EG1, EG2 for driving the generator, the plurality of internal combustion engines differing in output characteristics, and a controller CT configured to select one or more internal combustion engines from the plurality of internal combustion engines so that, when operating the selected one or more internal combustion engines in the respective high efficiency regions thereof, an engine output satisfies a required engine output and an engine operating efficiency is maximum, and to operate the selected one or more internal combustion engines in the respective high efficiency regions thereof.

An internal combustion engine provides a cylinder able to rotate about a rotational axis L, a combustion chamber defined in the cylinder, and drive parts. The drive parts provides pistons housed in the cylinder able to slide in the rotational axis direction and defining a combustion chamber, slots formed in the circumferential surface of the cylinder, and followers extending from the pistons through the slots to the cams. The slots are configured to limit relative movement of the followers with the pistons to the cylinder in a circumferential direction of the rotational axis, allowing relative movement of the followers with the pistons to the cylinder in a direction of the rotational axis. Combustion performed in the combustion chamber moves the pistons with the followers along profiles of the cams to rotate the cylinder about the rotational axis, and the rotation of the cylinder is taken out as engine output.

A rotatable piston assembly for a reciprocating piston type hydraulic machine includes a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine.

A rotatable piston assembly for a reciprocating piston type hydraulic machine includes a rotatable piston configured for a controlled rotation and configured to reciprocate within a cylinder bore of the reciprocating piston type hydraulic machine.

A butterfly mechanism system includes a cylindrical housing with an inner surface and an outer surface; a first snitch having a first cylindrical body and a first two tabs extending away from the first cylindrical body; and a second snitch having a second cylindrical body and a second two tabs extending away from the second cylindrical body; the first snitch and second snitch are secured within the cylindrical housing the first two tabs and the second two tabs creating four chambers within the cylindrical housing. Both the snitches comprise of a bevel gear type mechanism and a ratchet and pawl type mechanism centered to the main output shaft.