Abstract: An apparatus for an aspiration plate for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cutout in the rotor as the rotor rotates. A back, or aspiration, plate includes inlet and exhaust ports that are sequentially opened and closed by the rotating members and rotor as they move within the housing. A front plate rotates with the rotor and separates the combustion chambers from a planetary gear assembly that ensures the alignment of the rotating members as they orbit the rotor shaft. Fuel is injected after the compression cycle is initiated.

Abstract: A rotary engine with multiple pivotally mounted lobes desmodromically extendible and retractable from a rotor to trace asymmetric volumes for inlet and compression and expansion and exhaust based on the contour of the engine case which the lobes sealingly engage.

Abstract: 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.

Abstract: The present invention relates to a rotary machine that can be employed in different applications such as, for example, a combustion engine or compressor. The invention further relates to an assembly of two or more rotary machines and a combustion engine based on the rotary machine. The machine is substantially composed of a helical screw-shaped rotor connected to an outgoing shaft journal, which screw-shaped rotor rotates in a cylindrical housing. The machine is further provided with rotating chamber dividing bodies whose rotation is synchronised with the rotating screw-shaped rotor. The chamber dividing bodies divide the helical screw grooves into chambers whose volume varies with rotation of the screw-shaped rotor.

Abstract: A reciprocating rotary engine of the present invention includes a torus-shaped chamber which is divided into two regions. Each divided region forms a sealed chamber. Also, each sealed chamber is divided by a piston attached to a shaft whereby four sealed chambers are formed. Also, a power converter includes two power combination devices and two motor/generator dual role electric motors. Each combination device has three rotational axes named by A, B and C, as in the case of a planetary gear unit or a differential gear unit. Following this notation, the torques of two axes, A and B are combined together and transferred to the remaining axis C. The two electric motors modulate the torque of B axis periodically in accordance with reciprocating rotary motion of the engine, to thereby provide a counterforce to oscillating power and transfer unidirectional torque to a drive shaft. Namely, the power from the engine can be more effectively converted.

Abstract: An energy transfer machine, for example, a positive displacement internal combustion device, has a fixed or rotating outer housing, an internal rotating carrier and one or more inner rotors with rotational axes which are offset from the inner rotor carrier rotational axis. Circumferentially expandable projections from the outer housing and rotor mesh with each other to define variable volume chambers.

Abstract: An internal combustion engine operates on a four-stroke cycle and includes a housing defining: one or more generally wedge-shaped combustion chambers, and an internal cavity in which a wheel is mounted for rotation on a crankshaft. Arranged inside each combustion chamber is a gate, with each gate having a corresponding gate control assembly including a control shaft. Each control shaft is supported by bearings that engage and ride in a generally elliptical cam-cutout defined in the surface of the wheel. Movement of the gate control assemblies within and with respect to the elliptical cam-cutout controls the movement and operation of the gates, such that, as the wheel rotates, a fuel/air mixture is drawn into a combustion chamber; compressed by the rotating movement of a gate; and ignited, imparting a force on the gate, with the gate then rotating to expel combustion gases through an exhaust port.

Abstract: An asymmetric complete-expansion thermodynamic engine cycle is provided by an engine which compresses an air/fuel mixture to a given ratio, ignites and combusts the mixture, and expands the products through a power stroke to a volume substantially larger than the compression volume before being vented and purged to the atmosphere. This cycle is performed by a non-axisymmetric main rotor revolving within a cylindrical housing. Sealing means associated with the main rotor provide for the varied compression and expansion volumes. The cylindrical housing also contains means for air intake, fuel injection, venting, and spent gas exhaust porting.

Abstract: An internal combustion rotary engine is described, adapted to be used both for motor vehicles and ground machines (alternators, compressors, pumps and the like) or water craft or any type. The used fuels are the same of the presently used reciprocating engines. This engine comprises two rotors one inside the other, rotating in the same direction and at the same number of revolutions on two non concentric axes. The eccentricity between the two axes creates a crescent like chamber divided into four parts by four mobile elements mounted on the internal rotor, said elements being in turn constituted by two bodies that fit continuously to the inner surface of the external rotor thus ensuring the tight seal between the chambers. The efficiency of this motor is more than double of a reciprocating engine of the same displacement, with consequent halving of consumptions and emissions of carbon monoxide and dioxide.

Abstract: A gear set is disclosed having a guide, such as a cam, engaging the output shaft of the gear shaft and being indexed thereby. The guide drives one or more followers which in turn drive one or more interfaces of a differential gear set. The output shaft may be driven by a third interface of the differential gear set. The followers may likewise engage piston assemblies in order to control the piston assemblies during execution of a process such as a four stroke combustion process, or other process involving compression or expansion of a gas. The piston assemblies are enclosed within a housing defining an annular chamber, such as a toroid. Apertures formed in the housing allow exhaust gases to leave and air to be taken in. In one embodiment, a hyper expansion port is formed in the housing to release a portion of the air during the compression stroke in order to decrease the pressure of combustion gases.

Abstract: An energy transfer machine, for example, a positive displacement internal combustion device, has a fixed outer housing, an internal rotating carrier and one or more inner rotors with rotational axes which are offset from the inner rotor carrier rotational axis. Projections from the fixed outer housing and rotor mesh with each other to define variable volume chambers. In another energy transfer machine, in which the outer housing may be fixed or rotating, projections of the rotor are expandable within cylinders defined by projections of the outer housing.

Abstract: A rotary-piston engine includes at least two rotary pistons, which are located in an essentially spherical housing and which rotate in common about a rotational axis running through the center of the housing, each of the rotary pistons comprising two pistons that are interconnected in a fixed manner, lie diametrically opposite the center of the housing and execute pivoting displacements back and forth in opposite directions about a pivoting axis running perpendicular to the rotational axis, during their rotation. To control the pivoting displacements, the engine is provided with loose spherical or ellipsoidal rotational bodies, which are rotatably mounted in the sliding surfaces of the pistons in respective guide sockets that are hemispherical or ellipsoidal and which engage in at least one guide groove that is configured in the housing. The groove has an essentially hemispherical or ellipsoidal profile.

Abstract: This Rotary engine with pistons, a stator and a power chamber is comprising a Stator, which contains the power chamber for combusting a mixture of fuel and air; an air intake slot, exhaust slots and the power chamber located along an inside periphery of stator; a Rotor containing three of said pistons and three cylinders that create compression of the mixture of fuel and air; and an Eccentric Shaft for attachment to said pistons, said eccentric shaft moving said pistons in a inwardly and outwardly direction; the rotor further containing three pallets, which create a movable wall at an outer circumferential periphery of the rotor, said walls slide into the power chamber cavity of the stator; the rotor block has three equally spaced slots for mounting the three pallets, the Pallets, moves into the power chamber cavity during ignition of the compressed fuel and air mixture to enable the pallets and rotor to be pushed along the power chamber cavity, creating the rotation of the rotor.

Abstract: This rotary internal combustion engine has two rotatable vane type pistons mounted for axial rotation in a sealed casing. In an exemplary cycle, one piston is released to rotate at or prior to initiating combustion in the combustion space between the two pistons, while the other remains fixed. As the free piston rotates around to the position where the fixed piston is located, it drives exhaust from a prior cycle out of an exhaust outlet and then compresses air towards the combustion space. The roles of the pistons are reversed on the next cycle. Two units may be operated in tandem so that the power stroke of one unit provides power to help finalize the cycle of the other. Hydrogen is used as a preferred fuel, and water preferably serves as a lubricant.

Abstract: A rotary apparatus with an enclosure formed by a hollow curved housing along with two sleeves, with two vanes within the enclosure, where one vane is fitted on each sleeve and the space within the enclosure is partitioned into two segregated volumes by the vanes which can rotate along with the sleeve that the individual vane is fitted on, by use of the timing devices, couplings, brakes and shaft, resulting in a sequence of alternate, independent or simultaneous rotation and stopping of vanes that leads to increase and decrease of volume of the segregated spaces, in a fashion that results in a thermodynamic gas cycles with Variable Compression ratio.

Abstract: An internal-combustion engine comprises an engine housing having a first wall delimiting a first combustion chamber, a first piston also delimiting said first combustion chamber and with a first piston head, a first crankshaft, a second piston also delimiting said first combustion chamber and with a second piston head, a second crankshaft, and a second connecting rod connected between said second piston and said second crankshaft, said first wail defining at least a section of a torus, said pistons being guided along a curved path defined by said section of a torus.

Abstract: An improved rotary engine system has two stationary buffer seals located at the two ends of the minor axis of a rotor housing that divide the rotor housing into two separate volumes. A first volume is an intake and compression volume and a second volume downstream to the first volume is an expansion and exhaust volume. A rotating combustion chamber flow control device (CCFC) is synchronized with a rotor, for receiving compressed fluid from the first volume, for receiving fuel injected by a fuel injector located within a corresponding CCFC, for igniting and burning an air-fuel mixture, to allow combustion products to expand in the second volume, and for transferring the combustion products to the second volume. In one embodiment, the CCFC is synchronized with two longitudinal shafts fitted at centers of first and second housings, respectively, in each of which are located a pair of side by side rotors.

Abstract: A rotary motion device having piston valves that define an open region that are adapted to engage a power tooth of the power ring as the power ring rotates around the piston valves and the piston valves rotate about their own separate axis that is fixed with respect to the base housing of the device. The power ring is provided with radially inward and outward ports in one form that are adapted to communicate with radially inward and outward ports of a static member of the device. The ports are utilized to compress and expand a gas and in one form are utilized for an internal combustion chamber to create an internal combustion rotary motion device.

Abstract: A rotary engine having a rotor housing with a bisected, offset elliptical interior wall and a rotor member disposed therein. Four rotor vanes reciprocate radially from within said rotor wherein the opposing vanes perform the same function simultaneously as they pass through the cycle. The rotor vanes are forced out of the rotor by a pressurized oxygen/fuel mixture entering behind the vanes through the ports of the ported side plate. The rotation of the rotor urges the vanes back into the rotor due to the narrowing elliptical walls of the housing thereby forcing the oxygen/fuel mixture through the transfer ports and one-way check valve and into the combustion chamber where it is compressed and ignited.

Abstract: An apparatus to pump fluid comprises an annular bore (12) and at least one pair of pistons (15, 16) which travel along the bore (12). The pistons (15, 16) can be releasably locked to a rotating plate like member (14) to travel through the bore (12). One piston (15) moves with the rotating plate (14) to be the travelling piston while the other piston (16) is locked in the bore (12) to become the stationary piston. As the travelling piston hits the rear of the stationary piston, a changeover occurs where the travelling piston becomes locked to the bore (12) to become the stationary piston and the stationary piston becomes released from the bore (12) and locked to the rotating plates (14) to become the travelling piston. This arrangement is continuously repeated to provide a pump/compressor/engine and the like.

Abstract: The rotary machine can be used as a rotary internal combustion engine and as a pneumatic or hydraulic pump. The rotary machine comprises a housing in the form of two intersecting cylinder parts of different diameters having parallel axes. A rotor is received in the housing coaxially with the smaller-diameter cylinder and comprises at least two segmental rotor parts provided with annular rotor covers. At least two pairs of annular elements are provided engaging with the segmental rotor parts. Pivotal elements are interposed between the annular elements of each pair. A driving member is accommodated movably in the openings of the pivotal elements. The axis of rotation of the driving member is coincident with the axis of the larger-diameter inner cylindrical surface of the housing.

Abstract: An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cutout in the rotor as the rotor rotates. A back plate includes inlet and exhaust ports that are sequentially opened and closed by the rotating members and rotor as they move within the housing. A front plate rotates with the rotor and separates the combustion chambers from a planetary gear assembly that ensures the alignment of the rotating members as they orbit the rotor shaft. Fuel is injected after the compression cycle is initiated.

Abstract: A system includes a rotary chamber and pistons that move in the same direction at varying and alternatively opposite velocities to each other inside a fixed structure. The chamber is rotatively formed by two rotary partial-chambers, each partial-chamber having a piston jointed thereto. The piston closes the associated partial-chamber and penetrates respectively by sliding into a hollow of the other partial-chamber, so as to create at least two compartments that alternatively vary in volume when driven by a mechanism of alternatively opposite variation of velocities.

Abstract: An internal combustion device, rotor self cooled, concentric and symmetric shape, dynamically variable compression ratio; capable of developing multiple Otto cycles per rotation, using modules, each made, mainly of a solenoid gate valve and three chambers operating at the rotor periphery. High power/weight ratio, that improves substantially, by increasing quantity of working modules, and without any drive shaft lengthening. With volumetric asymmetry ratio between chambers, combustion gasses quick exhaust and fast rise of air/fuel mix pressure peak. Proper for many types of combustion and class of fuels, including hydrogen, and efficient use of compressed air as external energy supply. Excels in aircraft use.

Abstract: Radial impulse engine, pump, and compressor systems are disclosed herein. In one embodiment of the invention, an engine includes a first end wall portion spaced apart from a second end wall portion to at least partially define a combustion chamber therebetween. In this embodiment, the engine further includes a plurality of movable wall portions disposed between the first and second end wall portions. Each movable wall portion includes a cylindrical surface extending at least partially between a distal edge portion and a pivot axis. Upon ignition in the combustion chamber, the distal edge portion of each movable wall portion slides across the cylindrical surface of the adjacent movable wall portion as the movable wall portions pivot outwardly in unison about their respective pivot axes.

Abstract: An internal combustion engine including a working chamber assembly housing, intake and exhaust ports, a pair of piston assemblies each of which assemblies includes at least one pair of diametrically opposed pistons within the working chamber assembly housing rotatable about a rotational axis of said piston assemblies, means for interconnecting said first and second piston assemblies for variable speed rotation in the same direction during recurrent periods of rotation, wherein the piston having a piston head and a piston vessel, the piston head of one piston assembly received by the piston vessel of the other piton assembly to form a working chamber. The connecting means includes a pair of internal gears, a plurality of planetary gears and means for transmitting variable rotation, a main gear set, and a pair of auxiliary means that is connected to the piston assemblies.

Abstract: This invention is a cylindrical rotary power device, usable as and convertible to a rotary internal combustion engine, pump, and/or compressor. The device incorporates an ingenious design and composition utilizing bilateral symmetry to minimize power losses and maximize efficiency. It operates with a minimum of moving parts which can be manufactured at relatively low cost and readily maintained. Also, the power device of the present invention is readily converted to an internal combustion engine by merely removing the external power source and providing fuel flow and ignition charge to the cylinders.

Abstract: A circular column-shaped flywheel rotor 4 that rotates inside a rotor housing 1 in which a cylindrical-shaped hollow section is formed; a piston head 34 that is located on the flywheel rotor 4 so that it can come in sliding contact with the inner peripheral wall of the rotor housing 1 or be released from sliding contact; an intake valve 10 and airtight-sealing valve 21 that are constructed so that they are capable of partitioning and dividing a combustion chamber or opening up the combustion chamber; a spark plug 16; and an exhaust valve 28 that is located so that it is capable of connecting or disconnecting the combustion chamber with the outside; and whereby linking these components with the rotating movement of the piston head 34, performs air intake, compression, combustion expansion (explosion) and exhaust, to obtain rotational power output from the output shaft 6 that supports the flywheel rotor 4.

Abstract: The invention concerns an internal-combustion engine, the engine comprising an engine housing having a combustion chamber and a piston travelling within the combustion chamber along a path of movement delimited between an upper dead center position and a lower dead center position. The engine housing comprises a first housing part and a second housing part, the first housing part and the second housing part delimiting portions of the combustion chamber, abutting each other, and defining a parting plane, the parting plane being arranged parallel to the path of movement of the piston.

Abstract: In a nutating engine (or more generally a rotary displacement device) the cycling of combustion occurs between inner and outer spherical surfaces. The combustion chambers are additionally defined only by the surfaces of teeth of specially designed gears. These gears are the Rotator (2), two consecutive of some number of free-planetary gears (3A-E), and the lobed Nutating Member (1). The latter is enjoined to execute precessional rotation relative to the former and maybe both affixed with counterweights (11A,B; 12A,B) and subjected to reverse-English transforming the precessional rotation to a stress-free mode in both the Newtonian and Eulerian sense. The insertion of optional butterfly-shaped plugs (4A-E, 5A-E, 8A-E) boosts the compression ratio. Truly, no past engine possesses the characteristics of the instant invention.

Abstract: An internal combustion engine operates on a four-stroke cycle and includes a housing defining: one or more generally wedge-shaped combustion chambers, and an internal cavity in which a wheel is mounted for rotation on a crankshaft. Arranged inside each combustion chamber is a gate, with each gate having a corresponding gate control assembly including a control shaft. Each control shaft is supported by bearings that engage and ride in a generally elliptical cam-cutout defined in the surface of the wheel. Movement of the gate control assemblies within and with respect to the elliptical cam-cutout controls the movement and operation of the gates, such that, as the wheel rotates, a fuel/air mixture is drawn into a combustion chamber; compressed by the rotating movement of a gate; and ignited, imparting a force on the gate, with the gate then rotating to expel combustion gases through an exhaust port.

Abstract: An oscillating-piston machine comprises a housing, in which a first and at least a second piston are arranged, which pistons can together revolve in the housing about an axis of rotation that is fixed with respect to the housing, and which pistons, as they revolve about the axis of rotation, execute oppositely directed reciprocating pivoting movements about a pivot axis running perpendicular to the axis of rotation and through the centre of the housing, the first piston having a first end face, and the at least second piston having a second end face facing the first end face, the end faces delimiting a working chamber, characterized in that the pistons are arranged in such a way that the axis of rotation runs through the working chamber.

Abstract: A rotatably alternating air or water cooled two-stroke internal combustion engine comprising a cylindrical casing, and a rotor comprising two radially extending vanes affixed to a shaft rotatably mounted within the casing upon two end plates. Two longitudinally extending walls affixed to the casing. Sealing strips provided between said walls, the shaft, the vanes, the casing and the end plates respectively. The casing and/or the end plates equipped with plurality of ports which communicate with interior chambers formed between the vanes and the walls, allowing for intake of combustible air-fuel mixture and exhaust thereafter. Ignition means delivering a spark at the end of each working cycle. An extendable and adjustable connecting rod assembly converting the oscillating bi-directional rotary motion of the output shaft into a continuous unidirectional motion of the main shaft. A self lubricating mechanism incorporated into the engine.

Abstract: An internal combustion rotary engine includes a housing having an inlet and an outlet and a rotatable rotor centrally mounted within the housing. The rotor includes a plurality of pockets located about its circumference, the rotor further being connected to a rotor shaft. A rotatable elliptical body is disposed in each of the plurality of pockets. Each rotatable elliptical body is coupled to respective planet gears and each respective planet gear is meshed with a centrally disposed fixed sun gear. An ignition source is disposed in each of the plurality of pockets for igniting a fuel/air mixture. During operation of the internal combustion rotary engine, for each 360° rotation of the rotor, each elliptical body rotates through 720°.

Abstract: A rotary internal combustion engine comprising at least one but preferably a plurality of two operating chambers each having a toroidal path of travel on an interior thereof and an interactive piston assembly comprising a pair of first or driven pistons connected to a power take-off and a pair of second or driving pistons concurrently movable along the toroidal path of travel relative to said pair of first pistons. In each chamber, the pair of second pistons is periodically positionable, during each revolution, in driving relation to the pair of first pistons and is cooperatively structured therewith to accomplish the various phases of an engine cycle during forced travel of the pair of first pistons along the toroidal path of travel, thereby causing forced rotation or driving of the power take-off.

Abstract: A balanced rotary cycling machine suitable for use as an internal combustion engine, compressed gas or steam engine, compressor or pump is disclosed herein. The rotor assembly consists of four articulating pistons where the opposite pistons are inter-linked with each other by pivoted rods comprising a parallelogram mechanism and therefore eliminating a need for pivots between pistons. The rotor assembly rotates inside or outside of a circular or non-circular stator depending on the configuration chosen. A variety of mechanisms for shape deformation of four piston assembly during its rotating cycle is also disclosed herein, as well as detailed descriptions of preferred embodiments, including a four cycle internal combustion engine with circular stator, marine engine with polymer parts and a four cycle automobile rotary engine with conventional oil pan. In addition, a method of operation of external rotary combustion engine, employing a high-pressure compressor and an external combustion chamber, is disclosed.

Abstract: A rotary engine includes pistons disposed in operating chambers of a rotary member. The pistons are guided by guiding pieces engaged in a guiding groove formed at a housing so that the operating chambers are expanded. Each of the operating chambers includes an intake/exhaust port, which is opened or closed by a shutoff valve and a shutoff plate guided along guiding grooves formed at the housing. An exhaust chamber is caved in the housing so that an explosion stroke is carried out at the rear part of the exhaust chamber, whereby a rotating force is obtained. Compressed air is supplied into the operating chambers through air-supplying channels, which are opened or closed by shutoff valves, so that gas left in the operating chambers is forcibly discharged. Consequently, introduction of lubricant through the intake/exhaust ports or leakage of pressure is prevented, and large power is obtained.

Abstract: An axial vane rotary power device comprises a rotor arranged to turn within an annular chamber having two end plates with mutually facing undulating cam surfaces. Vanes retained in angularly spaced slots in the rotor reciprocate axially as the rotor turns. Transfer passages, interleaved between the vanes, connect each working chamber to a respective transfer port at the central bore of the rotor. A tubular inner stator member, about which the rotor turns, has two sets of peripheral ports that provide fluid communication between the working chambers and intake and exhaust channels as the rotor turns. Various configurations of the device allow it to function as either a two- or four-phase internal combustion engine, a fluid driven motor, a pump, a compressor or an expander.

Abstract: A rotary piston machine with a housing forming a prismatic cavity with a cavity wall. The cross section of the prismatic cavity is a cavity oval. A rotary piston is guided for rotary movement in the cavity. The rotary piston moves in consecutive intervals of motion from one blocking position to an adjacent end position. The rotary piston, during the consecutive intervals of motion rotates, in the same rotational direction, alternatingly about one of two different axes. A transmission arrangement transmits the rotary motion about two axes. When the rotary piston reaches a blocking position, there is an associated larger diameter cavity circular arc, in which the larger diameter piston circular arc was slidingly guided during the preceding interval of motion.

Abstract: K. Engine (KE) is rotary internal combustion engine, combination Reciprocating Engine (RE) and Gas Turbine (GT) comprising coaxially separate piston rotary compressor and turbine having housings with annular channels, outside combustion chambers (CH) unified with rotary valve mechanisms, staggered partitions dividing the annular channels for separate cylinders or freely passing the pistons; control means governing the partitions allow operational adjustment displacement volume KE without a brake effect; separate CHs secure ideal combustion in constant volume, unrestricted analog of advance of an ignition and forced ventilation; combined Otto- Brighton cycle and simple design provide high efficiency and reliability, great fuel economy, small sound and pollution; optimal work diapason KE is wider of both GT and RE; weight and size KE led to RE of the same displacement volume is 10 times less but more power and torque.

Abstract: A rotary drive mechanism for use as a motor, pump or compressor. The mechanism includes a housing having a chamber defined by a peripheral wall. A rotor is rotatably mounted in the chamber and has two longitudinal seal edges in contact with the wall. The rotor is mounted for rotation about a rotation axis and for sliding movement relative to the axis in a direction generally perpendicular thereto. The axis is offset from the center of the chamber.

Abstract: An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cutout in the rotor (1002) as the rotor rotates. A back plate includes inlet and exhaust ports that are sequentially opened and closed by the rotating members and rotor as they move within the housing. A front plate rotates with the rotor and separates the combustion chambers from a planetary gear assembly that ensures the alignment of the rotating members as they orbit the rotor shaft. Fuel is injected after the compression cycle is initiated.

Abstract: An engine including a housing formed with a pair of side-by-side intersecting substantially cylindrical cavities, and a pair of counter-rotating power rotors rotatably mounted within the cavities. The pair of power rotors include intermeshing lobes that each define open ended combustion chambers.

Abstract: A thermodynamic cycle for an internal combustion rotary engine is disclosed which achieves high efficiency through an asymmetry between the volume of air charge before compression and the volume of expanded air at the completion of expansion. The expanded volume is ideally selected such that the pressure of the exhaust gases is near the ambient pressure of the intake air. Three embodiments of engines which utilize the cycle are disclosed, one with the major components operating in uniform circular motion, one which utilizes lobe valves, and one which utilizes three sets of lobe valves such that three charges of air at various stages in the cycle are in the engine, thus increasing the power density of the engine.

Abstract: An internal combustion engine wherein each cylinder has two pistons placed in the opposite direction and attached together by an arm-type connecting rod and wherein a cylinder head has a rotor blade rotating in the middle between the upper cylinder head and the lower cylinder head whereby the upper cylinder head and the lower cylinder head are perforated with an intake port and an exhaust port. The rotor blade is perforated with one port and rotates by a gear which is at the outer edge of the rotor blade. When the piston reaches the power stroke, it generates force to act on the arm-type connecting rod and when the connecting rod arm moves in a linear motion, it transmits the force towards the crankshaft or the transmission shaft which is attached by a guide rail platform.

Abstract: Rotor having a pair of parallel side surfaces and a cured perimeter surface therebetween formed of contiguous mutually tangential curves each including a major portion defining a first major arc subtending a predetermined angle at a predetermined center of rotation, and having a first radius; a minor portion defining a first minor arc subtending a predetermined angle at the center of rotation, and having a second, shorter radius, the major and minor arcs arranged along an axis of symmetry; and intervening curves extending tangentially between major and minor arcs, each formed of a second major arc and a second minor arc, of predetermined radii; the curved perimeter shaped for coplanar, non-touching, and same-directional rotation with another identical rotor, and having mutually parallel orientations at the start of rotation and rotated at the same angular velocity, and separated from the curved perimeter of the other rotor by a predetermined fixed distance.

Abstract: A rotary engine has a spherical enclosure serving as a combustion chamber, a first baffle inside the combustion chamber slideable along a groove formed in the spherical enclosure, and a second baffle disposed in the combustion chamber which is in sealing engagement with the internal spherical surface of the combustion chamber. The second baffle is carried by a rotatable shaft, the shaft extending into the spherical combustion chamber. The first baffle rests against the second baffle, and separates the interior of the combustion chamber into a first part and a second part. A first valve in a first opening is disposed to communicate with the first part of the combustion chamber, and a second valve in a second opening is disposed to communicate with the second part of the combustion chamber.

Abstract: An apparatus for a rotary internal combustion engine. The engine has three rotating members that orbit about the center of a three-armed rotor as the rotor rotates within a housing with three lobes. The tips of the rotating members engage the lobes and a circular cutout in the rotor (1002) as the rotor rotates. A back plate includes inlet and exhaust ports that are sequentially opened and closed by the rotating members and rotor as they move within the housing. A front plate rotates with the rotor and separates the combustion chambers from a planetary gear assembly that ensures the alignment of the rotating members as they orbit the rotor shaft. Fuel is injected after the compression cycle is initiated.

Abstract: The Quasiturbine (Qurbine in short) uses a rotor arrangement peripherally supported by four rolling carriages, the carriages taking the pivoting blade pressure-load of the blades forming the rotor, and transferring the load to the opposite internal contoured housing wall. The present invention discloses a central, annular, rotor support for the rotor geometry defined by the pivoting blades and associated wheel-bearings, while still maintaining the important center-free engine characteristic. The pressure-load on each pivoting blade is taken by its own set of wheel-bearings rolling on annular tracks attached to the central area of the lateral side covers forming part of the stator casing.

Abstract: A rotary engine includes a housing, a shaft, a plurality of main pistons, a plurality of main piston rods, a plurality of following pistons, a plurality of following piston rods, a following piston timing mechanism and a plurality of timing bars.