Abstract: A toroidal engine that can be powered by a fuel/air mixture or by a compressed gas source. The toroidal engine uses one-way bearings to transfer torque generated in a toroidal chamber directly to a drive shaft. Pairs of pistons are mounted on two crank assemblies, which are concentric with the drive shaft. One-way bearings allow the crank assemblies to turn, one at a time, in one direction only. The crank assemblies are directly coupled to the drive shaft, which eliminates the need for complex gear and linkage arrangements. A system can be used with the toroidal engine to alternately stop the crank assemblies at a pre-determined position and to time the ignition of the engine.

Abstract: A rotary engine which provides a supplemental phase of compression between a first phase of compression and a second phase of compression.

Abstract: A central-axis rotary piston internal combustion engine has a rotor housing closed off by housing covers, has an outer rotor which rotates in the rotor housing with uniform speed, and has an inner rotor which rotates in the interior of the outer rotor with non-uniform speed. The outer rotor has three inwardly pointing pistons rigidly connected to one another and arranged at uniform angular intervals from one another. The inner rotor has a corresponding number of radially outwardly pointing mating pistons which are rigidly connected to one another and which engage between in each case two pistons of the outer rotor so as to delimit in each case two working chambers. Each working chamber is assigned a combustion chamber and each combustion chamber communicates via a control window with stationary inlet and outlet openings.

Abstract: The subject of the invention is a variable-volume rotary device with a housing (1) comprising an inner spherical cavity, inlet and exhaust ports and a bypass flow path. Within the housing (1) a rotary displacement member with spherical outer configurations capable of revolving around the center point of the spherical inner surface of the housing is mounted. Said rotary displacement member is equipped with a centrally disposed, disc-shaped partition (6) that forms a mutually isolated division in the spherical inner cavity of the housing (1) and has two pivot vanes (7, 8), splitting the housing cavity further into four isolated quadrants, the volume of which vary during gyration. Vanes (7, 8) are similar in shape to orange segments. Vanes (7, 8) are connected to opposing sides of and along the diameters of the central disc (6), and extend in mutually perpendicular planes, allowing for rotary movement.

Abstract: The invention relates to heat engines and more specifically to positive displacement internal combustion engines, and is particularly concerned with oscillating engines i.e. engines, in which piston executes oscillating motion. The invention provides the optimal, “canonical” form for the two stroke oscillating engine of unique strenght and compactness.

Abstract: The invention provides the proper form for the rotary positive displacement internal combustion engine. The construction of the engines according to the invention is based on a specific form of four bar mechanism and features unique simplicity (only three moving parts, no valves or camshafts, no gears to transfer piston movement to rotary movement), compactness and strength that make the engines according to the invention similar in these and some other aspects (e.g. power density) to gas turbines.

Abstract: A rotary engine includes a compressor assembly and two power assemblies that receive compressed air from the compressor assembly. Each assembly includes at least two intermeshing rotors. The rotors of the compressor assembly compress air, either alone or in an air/fuel mixture, in a compression chamber located in that assembly. The compressed air is transferred to the expansion chambers of the power assemblies, where fuel is ignited to initiate a power stroke. A line bisecting the axes of the rotors of the compressor assembly is inclined at an acute angle relative to a line bisecting the axes of the rotors of the power assemblies. The power assemblies operate 180° out of phase with respect to one another to minimize power fluctuations in the engine.

Abstract: A highly efficient, low weight-to-power ratio and adjustable high compression, gasoline or diesel internal combustion engine consisting of a multitude of cylindrical casings parallel to each other or aligned sequentially on one axle. Each casing having one radially extending vane affixed to a shaft rotatably mounted within the casing upon two end plates and one longitudinally extending wall affixed on the inside of the casing. The casing and/or the end plates equipped with plurality of ports and conduits which enable communication between interior chambers of the cylinders, 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 power output shaft into a continuous unidirectional motion of the main shaft. A self lubricating mechanism incorporated into the engine.

Abstract: Presented is a very low speed, high torque, horizontally opposed, rotary, valveless, Otto cycle piston engine producing four power strokes per revolution, the engine consisting of a fixed engine case assembly having upper and lower plates, the engine rotor assembly having upper and lower plates, sandwiching a single, closed ended cylinder assembly, the cylinder containing intake and exhaust-intake ports, independently reciprocating power and head pistons, each piston being reciprocally controlled by its vertically projecting piston bearing sets contacting respective sets of upper and lower, inner and outer peripheral cam plates, the engine being thus rotated, the cylinder being lubricated by a sealed, recirculating air-oil mist system, the engine rotor assembly having a lower, vertically projecting gear box housing containing a gas porting cap, a vertical drive shaft, two counter rotating output shafts, intake and exhaust pipes, and an exhaust gas filter canister.

Abstract: The problems of prior compressor structures relying upon conventional check valves are obviated by using, instead, flow control passages which operate to control flow while avoiding mechanical moving elements which may become problematical.

Abstract: A rotary engine is disclosed. The rotary engine of the present invention includes an engine body (100), which has therein a compression chamber (101), an output chamber (105) and a combustion chamber (109, 115), which is formed between the compression chamber and the output chamber. The rotary engine further includes a compression rotor (400) which is eccentrically provided in the compression chamber, an ignition device (125, 126) which is provided in the combustion chamber of the engine body, and an output rotor (500), which is eccentrically provided in the output chamber. The rotary engine further includes valves (600) which are provided in the respective bores of the combustion chamber, a synchronizing means for rotating the compression rotor in conjunction with rotation of the output rotor, and an axial sealing means for sealing the compression chamber, the combustion chamber and the output chamber.

Abstract: In a spark ignition (SI) turbine engine, the combustible fuel-air mixture is compressed by volume displacement and accelerated at high velocity into the ignition source, to reduce the combustion time relative to conventional SI engines, lowering the lean fuel-air mixture flammability limit. Increased process velocity reduces the time exposure of the compressed fuel-air mixture to combustion, permitting near adiabatic operation without pre-ignition. Reducing the time exposure of the combustible gases to high combustion temperatures may reduce emission of oxides of nitrogen. The best power combustion velocity may be maintained throughout the fuel-air mixture range. Lean fuel-air mixture operation may result in fuel savings without a corresponding loss of power, and may reduce carbon dioxide emissions. The high speed operation may provide a quieter engine. An expander or a turbine may recover some of the exhaust energy loss associated with near adiabatic combustion.

Abstract: A rotary engine having combustion and expansion chambers provided respectively with a pair of cylindrical hubs, each chamber having a pair of pistonlike rotors with a configuration making it possible that any one of the combustion pockets continues to close during about a half turn of the rotor and also making the deadspace smaller than that of any other known rotor. This allows both burning of all fuels at a high compression ratio under a constant volume at slow speed and discharging of most of the exhaust gases expanded to 1 atm without mixing with high pressure burnt gases for the following expansion process. Consequently the engine is operated in the CVC/CPX cycle, which has a higher thermal efficiency than any other cycle in internal combustion engines operating at the same compression ratio.

Abstract: The machine consists of 3 rotors which are attached to a common central shaft. The pistons move in a circular path within three separate chambers in three sections of the engine. The combustion of a combustible substance (gasoline) is carried out in two end sections through the action of a nozzle and a spark plug and the explosion of the gas, thus sets the rotors in motion. In a middle section the rotor sucks in air and compresses it towards the other two chambers.

Abstract: A twin rotor engine has a combustion chamber in which the fuel and air mixture is periodically exploded, and an inlet valve selectively delivers the expanding gasses to an expansion chamber defined by a housing and by the rotors. An outlet valve serves to vent the combustion chamber and both valves are driven from a cam shaft which may be geared to one of the rotors, or which may be rotated independently of the rotors so that rotor speed need not have a fixed relationship to valve timing. An alternative embodiment has two combustion chambers with a spool valve automatically shifted between two positions so each combustion chamber delivers its charge to the same expansion chamber during each engine cycle.

Abstract: A rotary engine with rotary tubular valves for gas inlet and for gas outlet is described. The engine is of the type wherein at least one rotor is eccentrically rotated on a shaft in a housing with variable volume compartments between the rotor and housing. The rotary tubular valves are spaced around and through the housing with the tube axes parallel to the longitudinal axis of the shaft which mounts the rotor and are parallel to each other. The valve tubes are slotted as is the housing leading into the compartments such that in the proper sequence a power providing gas is introduced through the inlet valves into a compartment to provide a movement of the rotor, and then is exhausted through the outlet valves by the rotor. Preferably there are at least two spaced apart cylindrically shaped rotors eccentrically mounted on a single shaft in separate closed housings and the compartments provided by sliding abutments around each rotor and housing.