The invention relates to power take-off devices for internal combustion engines and can be used, in particular, in different vehicles for taking power from reciprocating internal combustion engines. The present power take-off device for an internal combustion engine comprises at least two pairs of transfer mechanisms, coupled to the pistons of an engine, wherein a transfer mechanism is adapted to convert the reciprocating motion of its corresponding piston into rotary motion of a corresponding power take-off shaft. Each transfer mechanism comprises a means of setting rotation, which is mounted on a shaft connected to the piston, said means comprising a transfer component with at least one continuous, wave-like, vertically guiding track in the form of a guiding contact path, and a running wheel which moves along the contact path and has a fixed vertical position. The device provides an increase in engine efficiency of up to 50% and reduces the number of revolutions for similar levels of power output.

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 opposed piston engine has a driveshaft with a spaced apart cams mounted thereon. Each cam has a circumferential cam shoulder of a curvilinear shape selected to enhance flow through intake and exhaust ports. The curvilinear shape may be a segmented polynomial shape forming lobes which lobes are asymmetrical so that the lobe wavelength distance from a first trough to the lobe peak of an ascending shoulder portion of the lobe is greater than the lobe wavelength distance from the peak to a second trough of a descending shoulder portion of the lobe. Opposing cam shoulders may be shaped so as to always be converging or diverging from one another.

An opposed piston engine has a driveshaft with at least two combustion cylinders serially aligned along a center cylinder axis so as to be coaxial, where the center cylinder axis is parallel with but spaced apart from the driveshaft axis. A cam is disposed between adjacent combustion cylinders, as well as adjacent the outermost end of each combustion cylinder in order to reciprocatingly drive piston pairs disposed in each combustion cylinder.

It comprises one or more cylinders with pistons therein and mutually opposed power cams connected to respective first and second rotary shafts. The reciprocating pistons act on the power cams to impart a rotating motion to the rotary shafts. An attachment device is provided for connecting the rotary shafts to each other. The attachment device includes a shifting device for changing the relative angular position of the first and second rotary shafts. The result is engine distribution and compression ratio are changed dynamically.

A system for pumping and/or compressing fluids is provided. The system comprises a base, a motor, a cam configured to be rotated about an axis of rotation by the motor, and one or more cylinder piston arrangements. Each cylinder piston arrangement comprises a first member and a second member. The first member has a longitudinal axis and two ends. The first member is fixedly attached to the base. The second member is configured to be operatively coupled to the cam and to be movable along the longitudinal axis with respect to the first member and through at least of the two ends. The axis of rotation of the cam is parallel to the longitudinal axis about which the second member moves relative to the first member.

The invention relates to power take-off devices for internal combustion engines and can be used, in particular, in different vehicles for taking power from reciprocating internal combustion engines. The present power take-off device for an internal combustion engine comprises at least two pairs of transfer mechanisms, coupled to the pistons of an engine, wherein a transfer mechanism is adapted to convert the reciprocating motion of its corresponding piston into rotary motion of a corresponding power take-off shaft. Each transfer mechanism comprises a means of setting rotation, which is mounted on a shaft connected to the piston, said means comprising a transfer component with at least one continuous, wave-like, vertically guiding track in the form of a guiding contact path, and a running wheel which moves along the contact path and has a fixed vertical position. The device provides an increase in engine efficiency of up to 50% and reduces the number of revolutions for similar levels of power output.

The novel, Compact and Non Vibrating Endothermic Engine (CoNVEE) is an internal combustion engine with reciprocating motion of the pistons inside one cylinder. The CoNVEE has the mechanism for the transformation of the axial reciprocating motion of the pistons into rotational motion of the motor shaft. Its innovative architecture makes the engine more compact, given the same delivered power, with respect to the current state of the art. The CoNVEE core occupies a very reduced volume, with a very limited number of moving parts which act in perfect anti-symmetry, compensating all inertia forces developed. The CoNVEE may be conveniently used with any type of propulsion fuel and, particularly, for those applications which require high power density and low vibration in the motor.

Disclosed are four-stroke internal combustion engines and engine modules. The engine modules described herein convert linear reciprocating motion of a piston within a cylinder to rotational motion of a flywheel, which rotates around the cylinder's axis, or to rotational motion of the cylinder, which rotates within the flywheel. The linear reciprocating motion of the piston causes rotation of the flywheel or cylinder by piston pins being pushed down a sloped, spiraling surface of the flywheel, resulting in highly efficient power transfer. The rotational motion is transferred through a final drive, such as a drive shaft, drive train or drive chain. Engines described herein may include pairs of engine modules.

A reciprocating engine having a fixed body and at least one rotating and reciprocating member. The engine also has at least one combustion chamber, and the or each combustion chamber is defined between at least a fixed member connected to the fixed body and at least one rotating and reciprocating member. The or each rotating and reciprocating member is coupled to the fixed body in such a manner that reciprocating motion of the or each rotating and reciprocating member produces rotation of the or each rotating and reciprocating member. The or each rotating and reciprocating member is coupled to an output shaft in such a manner that the rotational motion only of the or each rotating and reciprocating member is transferred to the output shaft.