Abstract: An electric device has a driveshaft with at least one stator cylinder positioned between opposing, curvilinear shaped cams mounted on the driveshaft, where the center axis of the stator cylinder is parallel with but spaced apart from the driveshaft axis. A magnet assembly is disposed in each end of the stator cylinder, with one magnet assembly engaging one cam and the other magnet assembly engaging the other cam. Each magnet assembly includes a cam follower that can move along a curvilinear shaped cam. A magnet slide arm attached to the cam reciprocates magnets carried on the magnet slide arm through electromagnetic windings disposed around the stator cylinder. An electrical input delivered to the windings can reciprocate the arm, driving the cams to rotate the driveshaft. Alternatively, rotation of the driveshaft can be used to reciprocate the arm to induce electric current in the windings.

Abstract: In an axial piston motor in which fuel and compressed combustion medium are continuously burned in a combustion chamber so as to be turned into the working fluid and successively be delivered to working cylinders, at least one of the compressor discharge valves is closed in a positively controlled manner and is opened by a compressor pressure building up in the respective compressor cylinder.

Abstract: A four-cylinder four-stroke engine contains a base, a gas valve, a holder, a driving device, and a driven assembly, and a seat. When a four-cylinder four-stroke engine operates, a plurality of cylinders push plural pistons in the plurality of cylinders of the driving device so as to drive plural pushing posts connecting with the plural pistons to move upward and downward repeatedly, such that the driven assembly coupling with the plural pushing posts is pushed to drive a rotary shaft to rotate, thus generating a rotational energy, and the driven assembly simultaneously pushes a gear set of the driving device so that the gear set drives the gas valve on the base to rotate 360 degrees to feed and exhaust gases in the base, such that the plurality of cylinders are driven to feed, compress, burst, and exhaust gases continuously without using a crankshaft and valves.

Abstract: A four-cylinder four-stroke engine contains a base, a gas valve, a holder, a driving device, and a driven assembly, and a seat. When a four-cylinder four-stroke engine operates, a plurality of cylinders push plural pistons in the plurality of cylinders of the driving device so as to drive plural pushing posts connecting with the plural pistons to move upward and downward repeatedly, such that the driven assembly coupling with the plural pushing posts is pushed to drive a rotary shaft to rotate, thus generating a rotational energy, and the driven assembly simultaneously pushes a gear set of the driving device so that the gear set drives the gas valve on the base to rotate 360 degrees to feed and exhaust gases in the base, such that the plurality of cylinders are driven to feed, compress, burst, and exhaust gases continuously without using a crankshaft and valves.

Abstract: The disclosure relates to reciprocating piston engines having four cylinders with a circular cross section, cylinder axes which are parallel to one another, and an output shaft. The cylinder axes, as viewed in axial section, lie at the corner points of a rectangle that is a square, with the output shaft, which extends parallel to the cylinder axes, in the center of the square. Each pair of cylinders which lie diagonally opposite one another are arranged in the same direction, as viewed axially, and in opposite directions, as viewed axially, with respect to the other pair of cylinders. The force or moment from each cylinder is transmitted to the output shaft via a dedicated rotating crank and a toothing system.

Abstract: A high thermal efficiency reciprocating hydrogen-fueled engine for ultra-high altitude long endurance flight and its method of operation are described. The engine is based on an opposed piston barrel design where long cylinders are employed to accommodate extraordinarily large compression and expansion strokes where the corresponding ratios are over 50:1, taking advantage of the very low ambient air pressures and temperatures at 60,000 ft and higher to reduce the overall weight and strength requirements of the inventive engine that would be a factor for operation at lower altitudes. The engine is designed to obtain more than 70% indicated thermal efficiency when operated at ultra-high altitudes of 60,000 ft and greater. A combination of large compression ratios combustion temperature optimization and management, instantaneous and complete combustion at TDC, followed by a rapid and long expansion stroke using tailored control of piston movement provide the means to achieve such high efficiencies.

Abstract: Device for transmission of force from the pistons of a piston engine, where the pistons of two opposite combustion cylinders cooperate with alternating power strokes, the common piston rods of the cylinders being supported on a balance arm at a distance from the bearing of the balance arm to perform a rocking movement around the bearing, where the piston rods of two further opposite and cooperating combustion cylinders being supported on the balance arm opposite and at a distance from the bearing, and the balance arm being connected with a flywheel, where the bearings on the balance arm between the bearings of the balance arm and the bearings of the piston rods on the balance arm being directly connected with a shaft for energy transforming means.

Abstract: A balanced five-stroke cycle, five cylinder engine, wherein the five cylinders are parallel and arranged around a shaft mounted in a centrally disposed bore in the engine block, wherein the shaft is parallel to the cylinders, wherein power pistons in the cylinders dwell motionless for the intake part of the cycle between the vacuum stroke and the compression stroke of each power piston; induction of the combustion mixture resulting from the partial vacuum created by the vacuum stroke of the power piston, and wherein the position of each power piston is governed by a power piston cam mounted on the shaft, the shaft and bore on the centroidal axis of symmetry of the radially spaced apart array of five cylinders corresponding to the pistons, the opening and closing of exhaust ports governed by an exhaust piston cam mounted on the shaft moving exhaust pistons along the cylinders.

Abstract: The invention relates to an engine (1) including: —a chamber (3) designed to accommodate a working fluid, —a first piston (4) defining the volume of said chamber (3), —a first passage (5) located in said first piston (4) to supply the chamber (3) with working fluid and/or to discharge from the chamber (3) the burned fluid resulting from the combustion of the working fluid, —a first valve (6) mounted on the first piston (4) to monitor the opening and closing of said first passage (5), —an output shaft (8) that engages with the first piston (4) to convert the motion of the first piston (4) into rotational motion of the output shaft (8), characterized in that the output shaft (8) and the first valve (6) engage to convert the motion of output shaft (8) into motion of the first valve (6).

Abstract: Methods and apparatus are described for a reciprocating combustion engine. A method includes operating a dual-piston engine including introducing a gas into a pair of combustion chambers; introducing a fuel into the pair of combustion chambers; compressing the gas; combusting the gas and the fuel; and exhausting combusted gases. Each of the pistons drives a reciprocating crankshaft that protrudes through a cylinder wall and cooperatively rotate a pair of rotors by engaging substantially sinusoidal cam tracks on the rotors. An apparatus includes a cam driven, concentric drive rotary-valve dual-piston engine.

Abstract: This is mainly a one-cylinder environmental friendly two stroke engine with a lubrication and a gas control mechanism similar to a four stroke engine. An additional rotation inside of a cylinder of a piston making a stroke motion is utilized for a better gas control mechanism. Control edges on the rotating piston open and close ports in the cylinder in the right sequence, most importantly the exhaust port will be closed prior to the opening of the transfer port. The piston with the rigidly connected L-shaped piston rod rotate around the axis of symmetry of the piston by a rotating spherical bearing rigidly, but eccentrically connected to a rotating shaft. A certain angle between the shaft and the axis of rotation of the piston creates also a stroke motion. An oil-ring around the piston rod works in the same way as by a four stroke engine.

Abstract: A variable stroke and compression ratio engine employs multiple pistons connected to a wobbler. A crank with an axis of rotation has an upper journal with a first angle relative to the axis and a lower journal with a second angle with respect to the axis. A cradle connected for rotational motion with respect to the wobbler is carried by the crank with sliding engagement to the upper and lower journals for translation between a first high eccentricity position and second low eccentricity position.

Abstract: An engine with an output shaft extending through the engine block and generally parallel to the piston, the engine includes a boost piston cylinder integral to the cylinder, and a boost piston for producing compressed air so as to supercharge the engine. The engine further includes an energy translation mechanism translating linear movement into rotary movement, an energy translation mechanism for reducing the side force that the piston exerts against the inner wall of the combustion chamber, an energy transforming member working in concert with an engine torque absorbing/motion control torque reaction device to eliminate the lemniscate motion from being translated to the piston and to absorb all engine torque to case ground through a rolling element bearing, and a port time control system having a shaft phaser to adjust the phase of the pistons or the position of the air control valve.

Abstract: The horizontally opposed center fired engine improves on the traditional design of the horizontally opposed engines and center fired engines with a better engine geometry. The present invention utilizes four pairs of opposing pistons to compress a larger volume of air-fuel mixture within four different cylinders. The four different cylinders are radially positioned around a center axle in order to achieve a perfectly symmetric engine geometry. The center axle consists of two different shafts spinning in two different directions, which could drastically reduce engine vibrations in the present invention. Engine vibrations are caused by a change in engine speed and result in a loss of energy. Due to the design, the present invention will only experience energy loss in the form of entropy and friction. Thus, the present invention can convert a higher percentage of chemical energy into mechanical energy than any other internal combustion engine.

Abstract: A four-stroke engine without a crankshaft and valves contains a base including a gas groove, a first cylinder, a second cylinder, two gas flowing holes, a first inlet, a first outlet, and a holder; a gas valve including a connecting rod, a second inlet, and a second outlet; a driving device including two pushing posts, a rotating arm, a rotary shaft; a gear set including a panel, an upper gear, and a bottom gear, wherein the drive gear has a second tilted bar, the second tilted bar has a second opening arranged thereon, a second rotatable bearing; a seat including a peripheral side coupling with a top rim of the holder, a fixed pole axially connecting with the holder and the base; wherein a top end of the rotary shaft extends out of the seat.

Abstract: An internal combustion engine has at least one cylinder, and a means for varying the compression ratio in the cylinder. The at least one cylinder has two oppositely directed reciprocatingly movable pistons in it, which are each connected via a piston rod with a corresponding arm, whereby each arm shows an opening in which a main shaft that connects the two arms is rotatably supported in bearings. The main shaft includes an angle with a center line of each opening. The means for varying the compression ratio in the cylinder includes a division in the main shaft, as well as drive means in order to move the parts formed by it of the main shaft apart from each other.

Abstract: Methods and apparatus are described for a reciprocating combustion engine. A method includes operating a dual-piston engine including introducing a gas into a pair of combustion chambers; introducing a fuel into the pair of combustion chambers; compressing the gas; combusting the gas and the fuel; and exhausting combusted gases. Each of the pistons drives a reciprocating crankshaft that protrudes through a cylinder wall and cooperatively rotate a pair of rotors by engaging substantially sinusoidal cam tracks on the rotors. An apparatus includes a cam driven, concentric drive rotary-valve dual-piston engine.

Abstract: The aim of the invention is to improve the efficiency of an axial-piston motor comprising at least one compressor cylinder, at least one working cylinder and at least one pressure line guiding the compressed fuel from the compressor cylinder to the working cylinder. To this end, the axial-piston motor is provided with at least one compressor cylinder inlet valve having an annular cover.

Abstract: The aim of the invention is to improve the efficiency of an axial-piston motor. To this end, the axial-piston motor is provided with a system for regulating the combustion chamber, said system comprising a means for supplying water into the combustion chamber.

Abstract: A barrel engine includes a central drive shaft and a cam plate interconnected to the drive shaft. The barrel engine includes a plurality of cylinders each having a longitudinal axis that is generally parallel with the drive shaft. The axes of the cylinders are arranged in a generally circular manner about the drive shaft. A pair of guide rods are provided, which correspond to each cylinder of the engine. Each guide rod has an axis generally parallel with the axes of the cylinders. The barrel engine includes a plurality of piston assemblies. Each piston assembly includes a piston head slidably coupled to one of the cylinders for reciprocal movement along the axis of the cylinder. Each piston assembly also includes a guide block slidably coupled to a respective pair of guide rods for guiding the piston head during reciprocal movement along the axis of the cylinder.

Abstract: To improve the efficiency of an axial piston engine, the invention proposes an axial piston engine with a combustion chamber which operates with two-stage combustion.

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: The invention relates to a piston cam engine used in different field of the mechanical engineering, as internal-combustion engines compressors, pumps etc. The cam engine comprises cylinders (13) with pistons (20), a cylindrical tubular 3D cam (3) having a cam groove on the inner cylindrical surface and at least two guides (10) which are guide columns. The cam (3) is composed and includes two coaxial bushes (3a, 3b), each one having corrugated cam section (95a or 95b) from its one side and flange (35) from its other side besides the bushes (3a, 3b) are positioned against each other with its corrugated ends at a distance from each other, and further comprises spacer (37) between the flanges (35) of the bushes (3a, 3b), so as to form the cam groove having a constant section.

Abstract: An internal combustion barrel engine having rotating cylinders and pistons which together form combustion spaces. The combustion spaces are maintained at a substantially constant volume while a compressed air-fuel mixture is combusted therein.

Abstract: A barrel internal combustion engine includes a drive shaft assembly, a monoblock, a plurality of piston assemblies, and a valvetrain. The driveshaft assembly has a central drive shaft and a cam plate extending therefrom. The one piece monoblock has a longitudinal central axis with a central longitudinal opening receiving the drive shaft, the one piece monoblock further defines a plurality of combustion chambers, a coolant system, a plurality of intake passages and a plurality of exhaust passages. The combustion chambers each have an axis parallel to the central axis and are defined in a circle concentric with the longitudinal axis. Each chamber has a generally cylindrical side wall, a first closed end and a second open end, an intake valve opening and an exhaust valve opening being defined in the first closed end of each combustion chamber. The coolant system includes a plurality of coolant passages.

Abstract: A power-generation device comprising at least one cylinder, at least one cylinder head, at least one piston and an output shaft, having a central axis having a fixed angular relationship to the central axis of the cylinder. A swash plate, having a first swash plate surface having a normal axis disposed at a first fixed angle to the central axis of the output shaft, is fixed to the output shaft. At least one connecting rod is connected to at least one piston. At least one follower is secured to the second end of a connecting rod. The first follower surface contacts, and conforms to, the orientation of the first swash plate surface.

Abstract: An internal combustion barrel engine includes an engine housing and an elongated power shaft. A combustion cylinder and a guide cylinder are spaced apart and disposed on a common cylinder axis. A double-ended piston includes a combustion end disposed in the combustion cylinder so as to define a combustion chamber between the combustion end and the closed end of the combustion cylinder. A guide end is disposed in the guide cylinder. Combustion occurs only in the combustion cylinder and does not occur in the guide cylinder.

Abstract: An assembly includes at least one piston, a rotating member, a transition arm, and a mechanism. The transition arm is configured to translate between rotational movement of the rotating member and a first linear motion of the piston. The mechanism is configured to superimpose a second linear motion of the piston onto the first linear motion of the piston. The assembly can be a hydraulic (or air) pump or hydraulic (or air) motor, with the second linear motion resulting in reduced output ripple or smooth torque vs. angular rotation, respectively. Also, the assembly can be an alternator or electric motor, with the additional linear motion resulting in an ac waveform that conforms substantially to a sinewave or a back emf that conforms to the input voltage or electric waveform. In addition, the assembly can be an internal combustion engine in which the second linear motion results in the pistons lingering about top dead center during the combustion process.

Abstract: A cylinder block for an axial piston pump or motor is formed from a steel material. The block includes a plurality of bores that each have an internal bore surface of a predefined final material surface finish. The bores are subjected to various machining and heat treating processes to provide a bore surface formed from the same material as the cylinder block, and which has the desired final surface finish. Pistons are mounted within each of the bores for axial movement relative to the cylinder block. Each of the pistons is formed from a steel material and has an exterior surface that is in sliding contact with the internal bore surface. The subject cylinder block is processed to provide a steel-to-steel interface between the bore and piston and eliminates the need for liners to be specially formed or installed within each piston bore.

Abstract: The invention is directed to an improved internal combustion engine, having a symmetric cylindrical arrangement and using a bevel gear train to join multiple crankshaft sections. It provides for a naturally smoother operation with less vibration than in-line engines. Better efficiency is expected with the engine than with comparable in-line engines. Manufacturing is expected to be simpler and gasket-sealing better than the in-line and V types of engines. Compactness will add to the engine's utility.

Abstract: An engine, e.g., a cam drive, barrel-type internal combustion engine, that includes: a main drive shaft defining a longitudinal axis; a sinusoidal main drive cam rigidly attached to the main drive shaft; a plurality of cam members that are in contact with the sinusoidal main drive cam and that are configured to follow the sinusoidal main drive cam, wherein rotation of the sinusoidal main drive cam corresponds to reciprocating linear movement of each of the plurality of cam members in a direction parallel to the longitudinal axis; for each cam member, a pair of linear pistons disposed on opposite sides of the cam member for reciprocating linear movement within respective cylinder bores.

Abstract: An engine, e.g., a cam drive, barrel-type internal combustion engine, that includes: a main drive shaft defining a longitudinal axis; a sinusoidal main drive cam rigidly attached to the main drive shaft; a plurality of cam members that are in contact with the sinusoidal main drive cam and that are configured to follow the sinusoidal main drive cam, wherein rotation of the sinusoidal main drive cam corresponds to reciprocating linear movement of each of the plurality of cam members in a direction parallel to the longitudinal axis; for each cam member, a pair of linear pistons disposed on opposite sides of the cam member for reciprocating linear movement within respective cylinder bores.

Abstract: A joint for positioning between first and second elements includes an outer member and an inner member. The first and second elements are arranged for linear motion along a common axis. The outer member is configured for movement relative to the first and second elements along a first axis perpendicular to the common axis, and the inner member is mounted within the outer member for rotation relative to the outer member about a second axis perpendicular to the first axis and the common axis and for movement relative to the outer member along the second axis. The outer member is restrained from movement along the second axis. The outer member defines first and second parallel flat sides. Each flat side defines a plane perpendicular to the common axis. The outer and inner members each defining an opening for receiving a drive arm.

Abstract: A precision cast engine has a piston unit and a rotor unit to translate linear thrust from the piston unit into rotary power. Each piston rod is attached to a thrust absorber carriage running on precision bearings to eliminate piston drag on the cylinder walls. One or more drive rods extend from the carriage each into a curved groove on a power rotor to rotate it to transmit power via one or more drive shafts connected to drive components of transportation or other devices. An air intake valve on each piston provides automatic self aspirating to force combusted gasses out and draw in a controlled recharge of air for the fuel air mix.

Abstract: A variable angle cam-drive engine in which the torque output generated at a given engine speed (as represented by, for example, piston reciprocation frequency) can be varied by changing the operating angle of cam mechanisms in a power conversion mechanism of the engine. A power conversion mechanism, having a plurality of cam mechanisms and a cam-angle mechanism, for use in a variable angle cam-drive engine that can vary the torque output generated at a given engine speed by changing the cam-angle of the plurality of cam mechanisms using the cam-angle mechanism.

Abstract: A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the drive member changes the compression ratio of the piston assembly. An engine assembly includes first and second piston assemblies mounted back-to-back and 180° out of phase. A joint for positioning between first and second pistons includes an outer member and an inner member. The outer member is configured for movement relative to the pistons along a first axis perpendicular to the common axis of the pistons. The inner member is mounted within the outer member for rotation relative to the outer member about a second axis perpendicular to the first axis and the common axis.

Abstract: This engine relies on a flywheel having a flywheel axis and an undulating cam surface. A piston wit a roller at its base is positioned in a cylinder such that the roller abuts the undulating cam surface at some radial distance from the flywheel axis. Thus, as the piston is pushed downward by combustion pressure in the cylinder, it pushes against the cam surface causing the flywheel to rotate. As the flywheel continues to rotate its undulating surface pushes the piston back into position for a repetition of the cycle. The cam surface can be configured to control engine parameters such as compression ratio, duration of intake stroke, duration of exhaust stroke, duration of combustion stroke, duration of power stroke, compression stroke pattern, volumetric efficiency, or power stroke pattern.

Abstract: Fuel/air mixture is introduced transversely through cylinder into combustion chamber where it is ignited by spark plug to drive compound piston assembly to bottom of its stroke to rotate drive shaft. In another embodiment, air is introduced transversely through cylinder into combustion chamber, and diesel fuel is injected into combustion chamber and ignited when compound piston assembly reaches the top of its stroke to drive down compound piston assembly and rotate drive shaft.

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: A wobble plate engine includes a cylinder block, a plurality of pistons, a drive shaft, a weight, an oscillating member, a plurality of rods connecting the pistons to the oscillating member, a pair of bevel gears and a plurality of thrust bearing assemblies wherein the plurality of thrust bearing assemblies are installed at the cylinder block and the oscillating member to support the straight shaft, the weight and the declined shaft and reduce a rotational velocity transferred therefrom.

Abstract: A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the drive member changes the compression ratio of the piston assembly. An engine assembly includes first and second piston assemblies mounted back-to-back and 180° out of phase. A joint for positioning between first and second pistons includes an outer member and an inner member. The outer member is configured for movement relative to the pistons along a first axis perpendicular to the common axis of the pistons. The inner member is mounted within the outer member for rotation relative to the outer member about a second axis perpendicular to the first axis and the common axis.

Abstract: A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the drive member changes the compression ratio of the piston assembly. An engine assembly includes first and second piston assemblies mounted back-to-back and 180° out of phase. A joint for positioning between first and second pistons includes an outer member and an inner member. The outer member is configured for movement relative to the pistons along a first axis perpendicular to the common axis of the pistons. The inner member is mounted within the outer member for rotation relative to the outer member about a second axis perpendicular to the first axis and the common axis.

Abstract: In diesel engine, blower forces air into bore of cylinder head against small diameter piston of compound piston assembly forcing assembly down in engine cylinder, permitting air to enter combustion chamber. Diesel fuel injector introduces diesel fuel into combustion chamber where it mixes with injected air. Momentum of system forces compound piston assembly to the top of its stroke, compressing the air/diesel fuel mixture to the ignition point.

Abstract: A reciprocating engine comprising a cylinder assembly having a pair of connected pistons for reciprocation therein, a drive ring having a rotational orbit substantially encircling the cylinder assembly and a power transfer mechanism for coupling and converting reciprocating motion of the piston to rotating motion of the drive ring. The engine with drive ring can be more compact than an equivalent conventional engine with crankshaft, can generate higher torque and can be subject to less cylinder wall wear due to side thrust of the pistons.

Abstract: A multi-cylinder internal-combustion engine where translation between piston reciprocating motion and rotational motion occurs via a pair of conjugate axial cams with dual rolling followers on the piston-assemblies—one rolling follower per conjugate axial cam. A pair of conjugate axial cams form a grooved or ribbed axial cam that is form-closed and is frequently referred to as a barrel-cam. Balanced operation is ensured through a series of relative constraints between the number and masses of uniformly spaced piston-assemblies about the barrel-cam cylinder, the shape of the barrel-cam's piston-assembly displacement profile, and also the valve-assemblies along with their actuation properties.

Abstract: A cam-drive engine having one or more cylinder assemblies detachably affixed to an engine core that does not include a cylinder block per se. Each cylinder assembly can be attached to or detached from the engine core without the need for disassembly of the cylinder assembly unit. This allows cylinder assemblies to be easily removed or replaced for repair or cylinder assemblies to be easily added to an existing engine. The cylinder assemblies can include cylinder pressure and solenoid actuated intake and exhaust valves that facilitate attachment. The engine can further include a catalytic converter contained in a central hub proximate to the cylinder assemblies thereby facilitating rapid warm-up of the catalyst.

Abstract: A wobble plate engine includes a cylinder block, a plurality of pistons, a drive shaft, a weight, an oscillating member, a plurality of rods connecting the pistons to the oscillating member, a pair of bevel gears and a plurality of thrust bearing assemblies wherein the plurality of thrust bearing assemblies are installed at the cylinder block and the oscillating member to support the straight shaft, the weight and the declined shaft and reduce a rotational velocity transferred therefrom.

Abstract: This engine 1 relies on a flywheel having a flywheel axis and an undulating cam surface. A piston with a roller at its base is positioned in a cylinder such that the roller abuts the undulating cam surface at some radial distance from the flywheel axis. Thus, as the piston is pushed downward by combustion pressure in the cylinder, it pushes against the cam surface causing the flywheel to rotate. As the flywheel continues to rotate its undulating surface pushes the piston back into position for a repetition of the cycle. The cam surface is configured to control at least one engine parameter such as compression ratio, duration of intake stroke, duration of exhaust stroke, duration of combustion stroke, duration of power stroke, compression stroke pattern, volumetric efficiency, or power stroke pattern.

Abstract: A five-cycle internal combustion engine in which the transfer cycle movements of the inlet and outlet pistons in the first cylinders are accompanied by a generally equal and axially opposite transfer cycle movement of the inlet and outlet pistons in the second cylinders so that all transfer cycle movements are axially balanced. Also disclosed is an improvement providing a compression ratio adjusting system constructed and arranged to effect axial movement between the cooperating inlet and outlet cams so as to vary the spacing between the inlet and outlet pistons in each cylinder at the combustion position thereof so as to vary the minimum volume condition defined thereby in relation to the volume defined by the compression position thereof.

Abstract: A cam-drive engine having one or more cylinder assemblies detachably affixed to an engine core that does not include a cylinder block per se. Each cylinder assembly can be attached to or detached from the engine core without the need for disassembly of the cylinder assembly unit. This allows cylinder assemblies to be easily removed or replaced for repair or cylinder assemblies to be easily added to an existing engine. The cylinder assemblies can include cylinder pressure and solenoid actuated intake and exhaust valves that facilitate attachment. The engine can further include a catalytic converter contained in a central hub proximate to the cylinder assemblies thereby facilitating rapid warm-up of the catalyst.