Abstract: The aim of the invention is to improve the efficiency of an axial-piston motor comprising at least one working cylinder fed by a continuously operating combustion chamber comprising a pre-combustion chamber and a main combustion chamber. To this end, the axial-piston motor is provided with a pre-combustion chamber comprising a check valve.

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: The invention relates to a method for powering a motor by using a combination of an explosion motor and a turbine. The combustion reaction in said combination occurs by the reaction of a variable mixture consisting of silicon hydrogens, silicon powder in a water solution and air, whereby water and silicon nitride are produced as exhaust gas. The inner wall of the motor should be coated with silicon nitride, which continuously and simultaneously takes place during the combustion process. A sufficient lubricating film consisting of silicon nitride is always is always provided in the fringe area between the inner wall of the motor and the combustion chamber so that no friction occurs. After being expelled from the explosion engine, the excess heat in the combustion gases is mixed with cold, compressed air, which is then used to drive a turbine whose shaft is coupled to the shaft of the explosion engine to enable the latter to run uniformly.

Abstract: A state quantity &sgr;(n) of a switching function is calculated based on a predetermined target air-fuel ratio TGABF, a detected air-fuel ratio AFSAF detected by a sensor (16), and a state equation derived from a transfer function Geng(q) of a secondary discrete system, representing the correlation between an air-fuel ratio of an air fuel mixture in a combustion chamber (1A) and the detected air-fuel ratio (S14). The air-fuel ratio is feedback corrected by applying a sliding mode control process based on the difference between the target air-fuel ratio TGABF and the detected air-fuel ratio AFSAF, and the state quantity &sgr;(n) (S14-S21). The response and robustness of the air-fuel ratio control are enhanced by using a physical model of the secondary discrete system.

Abstract: An apparatus for supplying combustion gas to an internal combustion engine. The apparatus generates negatively-charged molecules of the formula [MO.sub.x ].sup.-, where M is a positive ion, O is oxygen and x is a number at least equal to 3, and means for mixing the molecules with combustion gas and fuel supplied to the engine. Molecules [MO.sub.x ].sup.- are produced in an ion generator that comprises a specially shaped anode and cathode spaced apart from each other in a non-conducting housing. When a substantially constant voltage is applied across the anode and cathode, a plasma forms between and around them that in turn forms a magnetic field around the plasma and the anode. Diatomic oxygen molecules enter the housing and are polarized by the magnetic field and the resulting oxygen ions accelerated toward the plasma.

Abstract: An engine with a single correct direction of rotation and one or more pairs of two-sided rotary pistons (22A and 22B, 38A and 38B, 46A and 46B) with the two pistons of one pair having continuous, overlapping torque production for self-starting operation. Each pair of multiple pairs of pistons and their housings (24A and 24B, 40A and 40B, 48A and 48B) have identical cross sections and graduated thickness relative to the other pairs to sustain multiple expansion. Two sets of inlet valves for fuel, oxidizer and liquid (58A, 60A, 62A and 58B, 60B, 62B) feed two aphodid type combustion chambers (54A and 54B) at the inlet ports (26A and 26B) in the smallest volume pair of housings (24A and 24B).

Abstract: A gaseous fuel rotary piston engine has a rotor housing and a rotor. A side housing of the rotor housing is provided with an air intake port for supplying air to working chambers defined in the rotor housing and a gaseous fuel port which is connected to a gaseous fuel source through a fuel supply passage and through which gaseous fuel is supplied to the working chambers. The air intake port is formed to open near the top dead center on the intake stroke and close after the bottom dead center on the intake stroke. The gaseous fuel port is formed to open near the opening time of the air intake port and close substantially at the middle of the compression stroke.

Abstract: An engine with a single correct direction of rotation and one or more pairs of two-sided rotary pistons (22A and 22B, 38A and 38B, 46A and 46B) with the two pistons of one pair having continuous, overlapping torque production for self-starting operation. Each pair of multiple pairs of pistons and their housings (24A and 24B, 40A and 40B, 48A and 48B) have identical cross sections and graduated thicknesses relative to the other pairs to sustain multiple expansion. Two sets of inlet valves for fuel, oxidizer and liquid (58A, 60A, 62A and 58B, 60B, 62B) feed two aphodid type combustion chambers (54A and 54B) at the inlet ports (26A and 26B) in the smallest volume pair of housings (24A and 24B).

Abstract: A rotary engine that comprises a rotor having two side faces, a side housing disposed facing to one of the two side faces of the rotor and a center housing disposed facing to the other of the two side faces of the rotor. The side housing has an intake port formed therein. Also, the center housing has an intake port formed therein. The intake port of the center housing has an opening end which is dislocated from an opening end of the intake port formed in the side housing facing thereto to a retard side. A space is formed between the side face of the rotor and the center housing. And a relief hole is provided in the center housing in a dislocated portion of the opening end of the intake port of the center housing so as to escape a blow-bye gas pressure from the space.

Abstract: A rotary engine that comprises a rotor having two side faces, a side housing disposed facing to one of the two side faces of the rotor and a center housing disposed facing to the other of the two side faces of the rotor. The side housing has an intake port formed therein. Also, the center housing has an intake port formed therein. The intake port of the center housing has an opening end which is dislocated from an opening end of the intake port formed in the side housing facing thereto to a retard side. A space is formed between the side face of the rotor and the center housing. And a relief hole is provided in the center housing in a dislocated portion of the opening end of the intake port of the center housing so as to escape a blow-bye gas pressure from the space.

Abstract: A tuned combustion air intake system for a rotary engine used in an outboard motor includes a plenum chamber mounted on the rear of the engine directly against the exhaust manifold, which plenum receives cooling air discharged from the engine. Air from the plenum chamber is directed into an elongated outlet conduit having an extended tuned length to provide an optimum pulsed air flow to the combustion air inlet of the engine. Direct attachment of the plenum chamber and integral outlet conduit to the rear of the engine eliminates extended length tubular connections of the prior art and allows the width of the engine to be kept to a minimum, thereby adapting the system to enclosure in a conventional cowl for an outboard motor.

Abstract: An intake system is incorporated in a multi-cylinder internal combustion engine having a plurality of cylinders each being provided with at least three intake ports, at least one of the three intake port being timed to close after the remaining intake ports which are timed to close closely to each other. The intake system includes a main intake pipe introducing intake air into the intake system. The main intake pipe is connected to the remaining intake ports of the cylinder by way of a common intake pipe and to the at least one intake port of the cylinder by way of an intake pipe provided independently from the common intake pipe.

Abstract: A tuned combustion air intake system for a rotary engine includes a plenum chamber mounted on the engine block and receiving cooling air discharged therefrom. Air from the plenum chamber is directed into an elongated outlet conduit of a extended length determined to provide an optimum pulsed air flow to the combustion air inlet to the carburetor. The extended length outlet conduit is wrapped at least partially around the plenum chamber to provide a compact construction particularly suitable to adapting the engine for use in an outboard motor. A supplemental air outlet from the plenum chamber to a downstream portion of the outlet conduit may be utilized to bypass a portion of the conduit to provide a change in the tuned length thereof for optimizing performance at difference engine speeds.

Abstract: An intake system for three-rotor type rotary piston engine having first, second and third engine sections, and three rotors, the rotors being in 120-degree phase difference in terms of eccentric shaft rotation, a first communicating passage for communicating the working chamber in which the compression stroke is proceeding in the first engine section and the working chamber in which the intake stroke is proceeding in the second engine section, a second communicating passage for communicating the working chamber in which the compression stroke is proceeding in the second engine section and the working chamber in which the intake stroke is proceeding in the third engine section, and a third communicating passage for communicating the working chamber in which the compression stroke is proceeding in the third engine section and the working chamber in which the intake stroke is proceeding in the third engine section, each communicating passage being provided with a valve for controlling the openings thereof in acc

Abstract: An intake system for an internal combustion engine having a plurality of engine sections for utilizing the interference effect between engine sections to increase the intake charge for at least two engine sections, has a first intake passage connected to a first intake port of one engine section of the at least two engine sections, and a second intake passage connected to a second intake port of another engine section. The first and second intake passages are communicated with each other by a communicating passage and join each other at a junction portion at upstream ends thereof. The first and second intake passages and the communicating passage are arranged so as to have a common axis in the vicinity of the communicating passage. The junction portion is communicated with the atmosphere and a valve is provided for controlling the opening of the communicating passage in accordance with engine operating condition. The valve is located within the communicating passage.

Abstract: A rotary piston engine having three or more rotors and provided with an intake system including a primary individual intake passage leading to each rotor unit and a secondary individual intake passage leading to each rotor unit for providing a supply of intake charge under a heavy load engine operation. The secondary individual intake passages are connected together by a junction and have passage lengths which are determined such that the pressure wave produced at the intake port for one rotor unit is transmitted to the intake port for another rotor unit after a time interval corresponding to 180.degree. in terms of angle of rotation of the eccentric shaft.

Abstract: A two rotor type rotary piston engine includes an intake system comprised of including individual intake ports provided in at least one of the intermediate and side housings to open to the respective rotor cavities and adapted to be cyclically closed by the rotors as the rotors rotate, an intake passage including individual passages leading respectively to the intake ports and opened to a surge tank through openings which are opposed to each other with a spacing therebetween. The overall length of the individual passages and the spacing between the openings is determined with respect to the intake port timings so that a compression wave produced in one individual passage in opening timing of one intake port is transmitted to the other intake port just before the other intake port is closed to obtain an additional charge under a specific engine speed range.

Abstract: A multiple rotor type rotary piston engine includes an intake system of individual intake ports provided in at least one of the intermediate and side housings to open to the respective rotor cavities and being cyclically closed by the rotors as the rotor rotate, an intake passage including a common passage and individual passages divided from the common passage and leading respectively to the intake ports, the individual passages being communicated with each other by communicating passages. The intake passage is provided with a turbo-supercharger having a waste gate valve for limiting the intake pressure below a predetermined value so that there is produced an engine operating zone wherein the intake pressure is lower than the exhaust gas pressure.

Abstract: A two rotor type rotary piston engine includes an intake system comprised of individual intake ports provided in at least one of the intermediate and side housings to open to the respective rotor cavities and adapted to be cyclically closed by the rotors as the rotor rotate, an intake passage including a throttle valve and individual passages leading respectively to the intake ports and communicated with each other by communicating passages downstream of the throttle valve. The intake port includes a main port having an opening period of 230.degree. to 290.degree. in terms of angle of rotation of the eccentric shaft and an auxiliary port having an opening period of 270.degree. to 320.degree. in terms of the angle of rotation of the eccentric shaft. The auxiliary port is normally closed but opened in heavy load operation by a control valve and has a closing timing later than that of the main port.

Abstract: A two rotor type rotary piston engine includes an intake system including individual intake ports provided in at least one of the intermediate and side housings to open to the respective rotor cavities and adapted to be cyclically closed by the rotors as the rotors rotate, an intake passage including a throttle valve and individual passages leading respectively to the intake ports and communicated with each other by communicating passages downstream of the throttle valve. The intake port has an opening period of 270.degree. to 320.degree. in terms of the angle of rotation of the eccentric shaft, the communication passages and the individual passages leading to the respective rotor cavities having overall length between 0.57 and 1.37 m so that a compression wave produced in one individual passage in opening timing of one intake port is transmitted to the other intake port just before the other intake port is closed to obtain an additional charge under an engine speed range of 5000 to 7000 rpm.

Abstract: A two rotor type rotary piston engine includes an intake system comprised of individual light load intake ports and heavy load intake ports provided in at least one of the intermediate and side housings to open to the respective rotor cavities and adapted to be cyclically closed by the rotors as the rotor rotate, an intake passage including a throttle valve and individual light load and heavy load passages leading respectively to the light load and heavy load intake ports. The light load passages are communicated with each other by a communicating passage downstream of the throttle valve and the heavy load passages are also communicated each other by a further communication passage. The intake port timings and the passage lengths are so determined that pressure resonance effects can be obtained at both medium and high speed engine operations.

Abstract: A two rotor type rotary piston engine includes an intake system comprised of light load intake ports provided in the intermediate housing and heavy load intake ports provided in side housings to open to the respective rotor cavities and being cyclically closed by the rotors as the rotor rotates, an intake passage including a throttle valve and individual passages leading respectively to the intake ports. The passages leading to the light load ports are communicated with each other by a communicating passage downstream of the throttle valve. The heavy load intake port includes a main port and an auxiliary port. The auxiliary port is normally closed but opened in high speed, heavy load operation by a control valve and has a closing timing later than that of the main port.

Abstract: A rotary piston engine including a casing comprised of a rotor housing and a pair of side housings attached to the opposite sides of the rotor housing to define a rotor cavity. A substantially triangular rotor is disposed in the rotor cavity. The intake system includes a light load intake port formed in one of the side housings so as to open to the rotor cavity, a medium load and heavy load intake ports formed in the other side housing. The light load and medium load intake ports are formed so that they are opened to a working chamber before the chamber is disconnected from the exhaust port. The heavy load intake port is associated with a control valve which is closed under light and medium load operations. The medium load intake port has an effective area smaller than that of the light load intake port and is closed earlier than the light load intake port.

Abstract: A two rotor type rotary piston engine including a casing comprised of a pair of rotor housings connected together with an intermediate housing interposed therebetween and side housings attached to the outer sides of the rotor housings to define rotor cavities. A substantially triangular rotor is disposed in each rotor cavity. The intake system includes a light load intake port formed in the intermediate housing so as to open to each rotor cavity, a medium load and heavy load intake ports formed in each side housing. The light load and medium load intake ports are formed so that they are opened to a working chamber after the chamber is disconnected from the exhaust port and closed substantially simultaneously. The heavy load intake port is associated with a control valve which is closed under light and medium load operations.

Abstract: A rotary piston engine including a casing comprised of a rotor housing and a pair of side housings attached to the opposite sides of the rotor housing to define a rotor cavity. A substantially triangular rotor is disposed in the rotor cavity. The intake system includes a light load intake port formed in one of the side housings so as to open to the rotor cavity, a medium load and heavy load intake ports formed in the other side housing. The light load and medium load intake ports are formed so that they are opened to a working chamber after the chamber is disconnected from the exhaust port and closed substantially simultaneously. The heavy load intake port is associated with a control valve which is closed under light and medium load operations.

Abstract: A rotary internal combustion engine having an elliptical wall member which forms an elliptical internal chamber. A drive shaft is rotatably mounted in the housing and extends transversely through the elliptical chamber. A substantially cylindrical rotor is secured to the drive shaft within the chamber and has a plurality of circumferentially equidistantly spaced vane members radially slidably disposed within the rotor. A source of fluid pressure communicates with the radially inner end of the vane members to urge the vane members radially outwardly so that the vane members contact the elliptical wall. Moreover, each vane member is of a sliding laminated construction to ensure a sealing engagement between the vane member and the wall surface. A fuel and air mixture is supplied to the rotor via an air suction chamber which thereafter is compressed with the fuel between the rotor, the wall portion and adjacent vane members.

Abstract: Rotary piston engine having a main intake port in one side housing of the casing. The side housing is further formed with a supercharging air port which is connected with a supercharging passage leading from an air pump. The supercharging air port is so formed that it is opened substantially simultaneously with and closed later than the main intake port. A control valve may be provided in the supercharging passage to open the passage when the main intake port is substantially closed.

Abstract: Rotary piston engine having a main intake port in one side housing of the casing. The side housing is further formed with a supercharging air port which is connected with a supercharging passage leading from an air pump. The supercharging air port is so formed that it is opened substantially simultaneously with and closed later than the main intake port. A timing valve is provided in the supercharging passage to open the passage cyclically so that the supercharging is performed at the end period of the intake stroke. A centrifugal device controls the valve timing so that the valve timing is advanced under an increased engine speed.

Abstract: A rotary piston internal combustion engine includes a two-curve housing, a triangular piston rotor in the housing and a pressure reservoir connected through a channel to the compression chamber, or volume, formed between the housing and rotary piston. Rotation of the piston rotor divides the compression volume into a main volume and an auxiliary volume of decreasing size, the channel being located to communicate with such auxiliary volume. A valve in the channel is opened and closed by a control system in variable synchronism with movement of the piston rotor. The control system includes a synchronous transmission adjustable in phase in response to temperature and/or pressure in the pressure reservoir, which in turn is influenced by throttling of inlet air to the engine, and such control system may include apparatus actuable to heat or cool the pressure reservoir, all to permit Diesel operation of the engine.

Abstract: The disclosure is directed to a rotary engine having an annular housing and a plurality of walls disposed around the interior of the housing with adjacent walls joined by rounded corners. A plurality of sliding pistons are disposed within the interior of the housing spaced apart from one another and connected radially to a drive shaft extending through the interior of the housing along the central axis thereof. The sliding pistons having face portions adapted to slide adjacent the inner surfaces of the walls are disposed radially outward of the drive shaft. End plates disposed at opposite sides of the housing and intersecting the central axis thereof enclose the opposite sides of each sliding piston which extend to adjacent the inner surfaces thereof. The sliding pistons are guided around the plurality of walls and rounded corners of the housing chamber by cams attached to the end plates.

Abstract: A rotary energy converter has a rotor provided with a plurality of hinged vanes and centrally mounted within a stator having a generally circular inner wall surface formed with one or more vaulted bays and corresponding abutments. As the rotor rotates within the stator, the hinged vanes are urged outwardly by centrifugal force into wiping contact with the stator inner wall, and are alternately extended and retracted, as the vanes encounter the vaulted bays and abutments to provide a respiring chamber between each pair of adjacent vanes. In one preferred form, the energy converter is shown as a rotary internal combustion engine having at least two vaulted bays, one of which constitutes a fuel inlet and compression bay, and the other of which constitutes a combustion expansion bay with an ignition station located between said bays.

Abstract: A rotary engine with complemental cylindrical rotors facing each other and rotatable about a common shaft. Each rotor has an annular recess with a pair of diametrically opposed pistons mounted therein, the pistons having their outer ends projecting beyond the recess and being oscillatably receivable in the annular recess of the adjacent rotor.

Abstract: This invention relates to improving the internal combustion and internal use of fuel in engines, and more particularly to engines which are compounded in order to effect extension of the expansion event of the four-event work cycle of such engines which are enabled especially thereby to receive and use, for the furtherance and prolongation of the combustion process, secondary air made available by such engines and/or other means as specified hereinafter, and separately applied to the said combustion process particularly after the ignition of each fuel/air charge or any equivalent thereof.

Abstract: A rotary piston engine whose two pistons each have one or more sectors of greater radial dimensions sealingly engaging inner walls of two cylindrical, intersecting cavities respectively receiving the pistons, and one or more sectors of smaller radial dimensions which engage the larger sectors in all angular positions of the piston and radially bound working chambers with the inner casing wall. The pistons are coupled for simultaneous rotation of equal angular velocity, and the working chambers expand and contract cyclically because they are circumferentially bounded by the larger piston sectors and by a sealing arrangement connecting the engaged piston portions. A compressor drivingly connected to one of the rotary pistons supplies compressed fluid to the working chamber when it is at its minimum volume, and explosion of the fluid expands the chamber and turns the piston.