140results about "Engines with oscillating pistons" patented technology

A linear energy harvesting device that includes a housing and a piston that moves at least partially through the housing when it is compressed or extended from a rest position. When the piston moves, hydraulic fluid is pressurized and drives a hydraulic motor. The hydraulic motor drives an electric generator that produces electricity. Both the motor and generator are central to the device housing. Exemplary configurations are disclosed such as monotube, twin-tube, tri-tube and rotary based designs that each incorporates an integrated energy harvesting apparatus. By varying the electrical characteristics on an internal generator, the kinematic characteristics of to the energy harvesting apparatus can be dynamically altered. In another mode, the apparatus can be used as an actuator to create linear movement. Applications include vehicle suspension systems (to act as the primary damper component), railcar bogie dampers, or industrial applications such as machinery dampers and wave energy harvesters, and electro-hydraulic actuators.

Engines and methods execute a high efficiency hybrid cycle, which is implemented in a volume within an engine. The cycle includes isochoric heat addition and over-expansion of the volume within the engine, wherein the volume is reduced in a compression portion of the cycle from a first quantity to a second quantity, the volume is held substantially constant at the second quantity during a heat addition portion of the cycle, and the volume is increased in an expansion portion of the cycle to a third quantity, the third quantity being larger than the first quantity.

Toroidal internal combustion engine comprising two concentric engine rings. Intake valves are assembled in two faces of one set of pistons and exhaust valves in two faces of the second set of pistons. The intake-valve pistons are fixedly attached to one of the engine rings and the exhaust-valve pistons to the other engine ring. The face of one intake-valve piston and the face of one adjacent exhaust-valve piston form boundaries of an engine chamber. Combustion forces on the piston faces force the two concentric engine rings to counter-rotate. The intake-valve piston and the adjacent exhaust-valve piston sweep the same chamber volume at different strokes of the engine cycle. The engine is constructed of CRC material and mounted on a central shaft, with the intake manifold and the exhaust manifold mounted on each side of the engine, providing a lightweight, self-lubricating, highly fuel efficient, and dynamically balanced engine.

An engine configuration that places multiple pistons on one or two oscillating discs. The engine can be configured to operate as an internal combustion engine that uses diesel fuel, gasoline, or natural gas, or it can be configured as an expander to convert high pressure high temperature gas to rotary power. For any given set of choices of numbers of pistons and sizes of pistons, disks, and gears, there are disclosed dimensional constraints useful for more efficient functioning of the engine. This engine is especially suited as a driver for electrical power generation as it delivers high torque at low engine speeds, among other uses. Its compact design results in high power to weight ratios.

The present invention is directed to a peripherally pivoted oscillating vane machine (OVM). The OVM has been optimized for performance and efficiency. This has been accomplished by reducing loads on the drive mechanism and by employing de-phased motion of the peripherally pivoted vanes in conjunction with improved porting configurations as well as valve actuation and manufacture.

An oscillating piston machine comprises a plurality of pistons which are arranged in a housing, rotate together in the housing about an axis of rotation which is essentially central in the housing and is fixed to the housing, and execute reciprocating oscillating movements about a respective oscillation axis as they rotate in the housing, in each case two adjacent pistons executing oscillating movements in opposite directions. The housing is of spherical construction on the inside, the oscillation axes of the pistons being formed by a common oscillation axis which run essentially through the center of the housing.

The invention relates to an oscillating piston machine, the casing (12) of which has a spherical inner wall, and four pistons (32-38) are arranged in the casing, and they jointly rotate around a rotation axis (40), and each of the four pistons Two pistons diametrically opposed to the center of the housing form a rigid pair of pistons (32/36, 34/38) which can pivot about a common axis of oscillation perpendicular to the axis of rotation (40) ( 42) Swing back and forth in reverse, the two piston pairs are arranged through the cross joint relative to the swing axis, so that the two pistons of the two piston pairs face each other with their working surfaces, so as to form a working surface between the working surfaces. Cavities (48, 50), each pair of pistons has a supporting section (52, 56) for supporting the pair of pistons on the swing axis, and each of the two pistons of the pair of pistons has a side wall section (54) for forming them respectively A lateral boundary of a working chamber. The support section and the side wall section are designed in one piece and are arranged on the same side of the respective piston pair.

An oscillating motor includes a cylinder which is filled with hydraulic medium and which has at least one rib on its inside wall, whereby a motor shaft with at least one vane is supported inside the cylinder with freedom to oscillate, a sleeve concentric to the motor shaft, and a pressure-preloaded sealing arrangement inside each of at least two ring-shaped spaces between the cylinder and the motor shaft, which sealing arrangements seal the working chambers formed by the cylinder and its rib, the motor shaft, and the vane together with the cylinder covers at the ends. The ring-shaped spaces are connected to each other by a pressure equalization channel, and an axial groove, which forms the pressure equalization channel, is present in the contact area between the motor shaft and the sleeve.

In a rotary piston machine with an inner housing and rotors, the axes of the rotors are disposed at an angle to one another in order to equalize manufacturing tolerances and to reduce gap losses of such machines.

The invention relates to a butt clamp swing tray piston swing driver; the angular travel swing thereof is in a range of 0-330 degrees, or is continuous one-way rotation; the butt clamp swing tray piston swing driver is specifically suitable for such angular travel type valves as a ball valve, or replaces a motor to drive such revolving machines as a crusher, and is also suitable for pumping a fluid; and the fluid of a pressure feed piston of the driver driving a mechanical load to work or the fluid of mechanically driving a piston pressure feed load to work can be gas or liquid. The driver comprises a butt clamp swing tray piston swing actuation device, a fluid intake/drain channel system, a cooling system and a driving force generation system; a gas channel of the fluid intake/drain channel system is communicated with a working cavity; the cooling system is a forced cooling and/or natural cooling mechanism; the driving force generation system is a system of the fluid pressure driving the piston to act on the mechanical load or a system of mechanically driving the piston to act on the fluid load; and the butt clamp swing tray piston swing actuation device comprises trays of k not fewer than 3, a piston piece, a connecting mechanism, a power intake/discharge bonding structure, a lubricating system and a sealing structure.

An improved internal combustion engine of the four-stroke variable volume type operates by refraining from introducing substantial fuel into the working medium during the compression stroke until substantially maximum pressure of the working medium has been reached and utilizing at least one of the following processes: (a) causing combustion of fuel under substantially constant volume conditions; and (b) causing the power stroke to provide a larger volume to combustion products than the compression stroke provides to the working medium. Related methods are also provided.