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 barrel engine has a housing with a longitudinal bore with a pair of spaced apart bearing surfaces. An output shaft is disposed in the bore and has an outer surface with engagement elements. A cam plate has a central portion and a cam portion. The central portion has an outer surface with a pair of spaced apart bearing surfaces and a bore with an inner surface with engagement elements. The cam plate is received on the output shaft with the engagement elements on the inner surface of the cam plate bore being mechanically coupled to the engagement elements on the outer surface of the output shaft such that the shaft and cam plate are coupled for rotation and the cam plate is longitudinally slidable with respect to the shaft. The cam plate is disposed such that the bearing surfaces are generally aligned with the bearing surfaces of the bore.

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 barrel engine has a housing with a longitudinal bore with a pair of spaced apart bearing surfaces. An output shaft is disposed in the bore and has an outer surface with engagement elements. A cam plate has a central portion and a cam portion. The central portion has an outer surface with a pair of spaced apart bearing surfaces and a bore with an inner surface with engagement elements. The cam plate is received on the output shaft with the engagement elements on the inner surface of the cam plate bore being mechanically coupled to the engagement elements on the outer surface of the output shaft such that the shaft and cam plate are coupled for rotation and the cam plate is longitudinally slidable with respect to the shaft. The cam plate is disposed such that the bearing surfaces are generally aligned with the bearing surfaces of the bore.

Abstract: A barrel engine has a longitudinal output shaft defining a longitudinal axis. A plurality of cylinders is disposed about the output shaft and are each generally parallel to the longitudinal axis. A cam plane is defined perpendicular to the longitudinal axis and disposed between the open ends of the cylinders and a second end of the engine housing. A cam plate is disposed in the engine housing and supported for rotation about the longitudinal axis. The cam plate has a central portion and an outwardly extending cam portion. The cam portion has a cam surface that undulates from one side of the cam plane to the other. A flywheel has a plurality of lobes, each lobe being disposed generally in alignment with an area where the cam surface undulates closest to the open end of a cylinder.

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: A lash adjustment system for a roller is provided which includes a cam plate surface and a frustoconically shaped roller in mechanical communication with the surface. Means for moving the roller relative to the surface are included to urge the roller inwardly with respect to the cam plate in order to reduce lash.

Abstract: The efficiency of a multi-cylinder engine is optimized by coupling the volume change in each cylinder to a common coordinate under conditions such that, at each point in the engine's cycle, the energy necessary to produce a differential volume change is reduced substantially to zero. Each cylinder is coupled to the common coordinate through a cam or through a variable-length connecting rod. The same efficiency optimization may be achieved with various combinations of cylinders in a two-cycle engine, a four-cycle engine, or a multi-cylinder compressor.

Abstract: A shaft assembly for a barrel internal combustion engine having valves controlling the intake and exhaust of gases during operation of the engine. The shaft assembly includes a drive shaft and a cam shaft. The drive shaft extends longitudinally between opposite first and second ends along a rotational axis. The cam shaft has cam lobes for actuating the valves of the engine. The cam shaft is coupled in a spline arrangement with an end of the drive shaft for rotation therewith about the rotational axis. The cam shaft is substantially coaxial with the drive shaft.

Abstract: The present invention relates to a spatial cam power transmitting mechanism for the conversion between linear movement and rotary motion. Several transmitting mechanisms for the conversion between reciprocating motion of a roller shaft and rotary motion of an internal groove cam are provided, which do not have a piston and a piston bore. A roller shaft 16 is provided on a upper portion of internal groove cam 6 in a cam casing 15, and rollers are mounted to the outer end of the roller shaft. The rollers roll in a circumferential direction on the contour line of the groove of the internal groove cam 6. At the position of fixed rails 4 opposing to the roller shaft 16, guiding rollers or slide blocks 27 are provided, wherein the fixed rails 4 are provided axially in a lower portion of a cover 1 of the cam casing. The guiding rollers or slide blocks 27 can move up and down respectively in the fixed rails.

Abstract: A power-generation device comprising at least one cylinder, at least one cylinder head, at least one piston having a crown for improved lubricant circulation 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 axial motor (100) driven by opposed pistons/cylinder (101a–105b, 111a–115b) pairs arranged in a circular array about a central axis of the motor (100). The opposed pistons (101a, 101b; 102a, 102b; 103a, 103b; 104a, 104b; 105a, 105b) in each pair are linked by a corresponding connecting rod (106–110), which transfers the thrust from the pistons (101a–105a) to an output shaft via a power transmission apparatus (300) and z crank (114) arrangement. Reciprocating couplings disposed in the transmission apparatus (300) connect the connecting rods (106–110) to the apparatus (300). During operation, the reciprocating couplings oscillate to retain the connecting rods (106–110) substantially aligned with the corresponding piston pair to reduce side thrust on the pistons.

Abstract: A swash plate engine comprises a counterbalancing swash plate assembly. In certain embodiments, the angle of a first swash plate assembly may be varied to vary the stroke of the engine. The swash plate assemblies may be operable such that during certain operating conditions of the engine a portion of one swash plate assembly passes at least partially through an interior passage provided in another swash plate assembly. In desirable embodiments, the stroke to bore ratio of the engine may be varied from greater than 1 to less than 1 depending on a vehicle operating parameter, such as the horsepower and/or torque of the vehicle engine and/or the position of a vehicle throttle pedal.

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: Blower forces fuel/air mixture into bore of cylinder head against small diameter piston of compound piston assembly, forcing assembly down in engine cylinder, permitting fuel/air mixture to enter main cylinder of engine in which it is ignited. Exhaust forces assembly to bottom of its stroke. Roller bearings on large diameter piston engage sloping surface on swash plate causing rotation of drive shaft.

Abstract: A swash plate engine comprises a counterbalancing swash plate assembly. In certain embodiments, the angle of a first swash plate assembly may be varied to vary the stroke of the engine. The swash plate assemblies may be operable such that during certain operating conditions of the engine a portion of one swash plate assembly passes at least partially through an interior passage provided in another swash plate assembly. In desirable embodiments, the stroke to bore ratio of the engine may be varied from greater than 1 to less than 1 depending on a vehicle operating parameter, such as the horsepower and/or torque of the vehicle engine and/or the position of a vehicle throttle pedal.

Abstract: A piston (17) for an internal combustion engine. The piston (17) has a piston head (43) and a recess (46) formed in the piston head. A formation (91) is associated with the recess (46) for generating a turbulent motion in a fluid introduced into the recess. The formation (91) is configured to generate a swirling turbulent motion to the fluid introduced into the recess and preferably comprises spiral grooves (93) formed in the piston.

Abstract: N.E.V.I.S. stays for New Exhaust Valve and Intake System. This invention defines together with a new charge regulating system and a special valve for the function of the exhaust, several innovative elements that change completely the traditional alternative engine. Thanks to this new concepts, efficiency can be drastically improved, wile the dimensions, the weight and the power are comparable to wankel or to gasturbine and the expectations of the emissions and production cost are very interesting, wile the radically new architecture of the block allows to have the advantages of a complete modularity of the cylinders (every block can be associated to another one), the pistons are annular and are provided in the lower part of ball bearing that follow a convenient law of the movement caused by a cylinder surrounded by an undulated slot where the ball bearings are operatively inserted.

Abstract: An engine/pump having a crank shaft with a shaft axis and a crank axis oblique to the shaft axis which intersect with each other. Piston/cylinder assemblies rotate about the shaft axis and have a reciprocal axis between its top dead center and bottom dead center. The reciprocal axis midway between TDC and BDC being normal to a line projected from the intersection of the shaft axis and the crank axis. A cylinder head holds the cylinders in an array, The head includes at least one port per cylinder, and a port relative to which the cylinder head moves sealably to allow timed to the reciprocal movement of each piston in its cylinder and the rotational position, the opening and closing of each cylinder. Each cylinder is indexed at a predetermined rate to the relative rotation of the crankshaft through gearing.

Abstract: A compact light weight diesel cycle engine has a barrel arrangement of opposed-piston cylinders surrounding a power shaft that is rotationally supported on a plurality of transverse circular diaphragms attached at their perimeters to a sheet material shell. The cylinders are attached to and extend through at least some of the diaphragms to provide longitudinal structural members of the engine. Dual opposed cams are mounted on the power shaft at opposite ends of the cylinders and are coupled to the pistons by connecting rods. The cams are constructed to convert linear movement of the pistons to rotational movement of the power drive shaft. Toward the end of a power stroke, high pressure air is admitted to the cylinders through inlet ports that are opened before exhaust ports are opened. Heat exchangers use exhaust gas to pre-heat the air. Special fuel injectors use intersecting fuel jets to provide a high level of fuel atomization, turbulence, and dispersion in the cylinders.