Abstract: In previous Canadian patent applications of the present inventor, with number 2,302,870 filed on Mar. 15, 2001 in relation to “Poly-induction energetic engine”, and 2,310,488 filed on May 23, 2001 in relation to “Energetic and anti-discharge poly-turbine”, it has been shown how to advantageously build driving machines that were referred to as poly-inductive. The present patent application is a follow-up of the work initiated in the above-mentioned applications, especially with regard to the following aspects, which will allow generalisations of the work initiated, and also customisations. For a better understanding, the present application comprises a plurality of sections, each dealing with one aspect of the present invention. The first section, entitled “bridges for poly-induction engines”, shows how to achieve more balanced poly-inductive supports, more precisely by making use of induction cams.

Abstract: An internal combustion rotary engine generating continuous torque throughout an entire combustion cycle by an inverse displacement of a moving chamber and stationary convex surface is described. A rotary engine having one or more of asymmetric chambers, asymmetric crank shaft placement, and a mechanical crank arm of varying length is disclosed. An engine having greater horsepower output per unit of engine displacement than traditional piston or rotary engines is described.

Abstract: A counter-rotating rotary-piston engine has an output shaft with a cylindrical inner cavity rotatably mounted on a single support spindle in the frame of an aircraft. The output shaft extends substantially through the length of the engine block, which is suitably journaled on the shaft or the spindle to permit its counter-rotation. Internal combustion power is transmitted to the output shaft by means of an inner rotary piston fixed to the shaft which cooperates in conventional manner with an outer working chamber in the engine block, thereby producing concurrent rotation of the shaft and counter-rotation of the engine block. Dual propellers mounted on the shaft and on the block improve thrust performance, balance the torques and moments of inertia of the two counter-rotating masses, and virtually eliminate any resultant torque to the aircraft.

Abstract: A revolving cylinder engine having a stationary fixed housing with circumferential intake and exhaust ports and an ignition means, a concentrically positioned revolving cylinder block bored centrally and radially with said radial bore defining a piston compression chamber, and a crank bearing disc concentrically positioned within said central bore of said cylinder block that revolves within said cylinder block wherein the rotation of said crank bearing disc provides for the reciprocating action of the piston traveling through said compression chamber. A planetary gearset is the preferable means for rotating said cylinder block and said crank bearing disc for achieving the timing requirements necessary for precise port alignment in concert with the movement and position of said piston.

Abstract: The present invention pertains to rotary internal combustion engines and essentially relates to an engine including a body that comprises an inner cylindrical cavity as well as side covers. The cavity comprises a rotor-piston which is concentrically mounted therein, which comprises side surfaces, radial protrusions and radial recesses on its peripheral surface, and which forms together with the body a plurality of segmented cavities. The side surfaces of the rotor-piston abut tightly with the side covers, while the radial protrusions at the peripheral surface of the rotor-piston abut tightly with the inner cylindrical surface of the body cavity. The combustion chamber is located beyond the limits of the inner cylindrical cavity and communicates with the latter through inlet and outlet channels provided with controlled slide valves.

Abstract: A rotary engine contains a laterally displaceable rotary member which is sealably and slidably engaged by a rotor plate which has been modified for sealing, travels in an eccentric circle along with the rotor, but provides sealing against the rotor using corner seals and surface seals, and is also further sealed against the engine housing so that combustion gasses in the vicinity of the rotor and rotor plate do not escape either between the rotor and rotor plate surfaces nor between the rotor plate surfaces and the engine housing surfaces. The other end of the rotor rotatably depends from a reducing piston which is sealably engaged against the internal portion of the engine so that it can travel laterally, in order to laterally displace the rotor. During engine operation, the rotor can be made to be axially displaced or pushed through the rotor plate to lower the effective combustion volume.

Abstract: A rotary engine having a three apex rotor rotatably and eccentrically mounted on a driven shaft. The rotor having a central internal ring gear meshing with an eccentrically mounted pinion gear. The pinion gear drives the driven shaft with a 1:1 ratio and the eccentricities of the rotor and the pinion gear are of equal magnitude and direction so that the gears stay in contact. The eccentricity of the gears is not fixed with respect to the size of the gears. The pinion gear is fixed on a shaft spaced from the driven shaft and supports the ring gear and the rotor as it is driven by the rotor.

Abstract: A two-stroke cycle rotary internal combustion engine of the Wankel type is disclosed. The engine provides a flow through intake and exhaust with intake ports on one side wall of an epitrochoidal housing and exhaust ports on the opposite side wall. Compressed air is ducted to an intake plenum which provides a source of intake air as well as bypass air which is routed around the engine for engine cooling. A particular intake and exhaust manifolding and port positioning provides centrifugal pumping for charging and scavenging. Both rotating and stationary housing engines are disclosed and a rotating housing engine having fuel charge stratification and centrifugal filtering of inlet air is also disclosed.

Abstract: A rotary Wankel type engine system is disclosed, wherein the crankshaft is supported by a center main roller bearing. The rotor apexes are sealed by two piece apex seals and by side seals. The engine system further includes an oiling system which permits oil flow through the center bearing and through lubrication passages in the engine rotor to provide a means for cooling the engine rotor under high loading conditions. Riblets are defined in the combustion face of the rotor to promote aerodynamic lateral stratified charge control to minimize atomized fuel charge loss to surface wetting before ignition.

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 triangle rotation engine, which comprises an oval rotor repeatedly performing Auto cycle inside a cylinder block, which defines therein three cylinder walls, for driving a crank shaft slidably linked with the oval rotor for an output of power through two axles and two fanshaped wheels pivotally connected with the crank shaft so as to achieve the performance of an internal combustion engine.

Abstract: A rotary engine includes a rotor with a plurality of working surfaces. Each working surface of the rotor includes a recess covered by an insulating plate. A ledge is formed within and part way around a periphery of the recess and across one end of each recess. A slot extends into the rotor adjacent the other end of each recess. The plate is supported by the ledge and has one end fixed to a corresponding end of the recess. The other end of each plate is slidably received in the slot so that the plate is spaced apart from a bottom surface of the recess, thus forming an insulating air space or chamber between the plate and the body of the rotor. A small vent through the plate prevents pressure changes within the chamber from deforming the plate.

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 internal combustion engine includes a fuel intake port located in the periphery of the rotor housing near the air inlet end of the major axis of the two-lobed profile defined thereby. A rotary valve controls communication between the fuel intake port and a source of gaseous fuel such as natural gas. The valve includes a rotary valve member so that the communication is open between the source and the fuel intake port when rotor pockets are facing the intake port.

Abstract: A rotary internal combustion engine comprises a cylindrical casing and a cylindrical rotor. Several stepped crankshafts rotatably connected to the rotor pass through the ends of the casing, thereby confining motion of the rotor to orbital motion. Radial vanes extend from an axial shaft in the casing to the inner surface of the casing wall and form seals against the casing. Combustion chambers are formed between adjacent vanes. Intake, exhaust, and ignition systems provide a combustion cycle for each chamber as the rotor orbits.

Abstract: A rotary internal combustion engine has a rotor housing with drilled coolant passages extending generally axially therethrough, a thin wear-resistant liner lines the inner trochoid surface of the rotor housing. A ceramic insert may be used to insulate a top-dead-center region of the inner portion of the rotor housing. Some of the coolant passages may cross each other through a "V-crotch" portion of the housing between the spark plug and pilot injector bores.

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: An intake system for a rotary piston engine having a plurality of engine sections, each engine section being separated by an intermediate housing. In the intake system, there are provided communicating passages for communicating the engine sections so that intake air can be transferred between working chambers formed in the engine sections in accordance with a difference in rotor phase between the engine sections. The communicating passage is located so as to be closed after an intake port is closed in each engine section and positioned so that there remains a larger amount of intake air in each of the working chambers than the minimum amount of intake air required for ensuring idling rotation speed under idling engine operating condition when the communicating passage is closed. This intake system makes it possible to obtain a rotary piston engine which can remarkably reduce pumping loss and desirably control the amount of intake air in accordance with an engine operating condition.

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 having an exhaust port device in the rotor housing. The exhaust port device includes a single exhaust port formed in the rotor housing and an insert located in the exhaust port. The insert has a hollow body and partition walls separating the trailing part of the port opening into three sub-parts. The central one of the sub-parts is covered by a cover wall so that the port area is gradually increased to suppress exhaust noise. The insert can be rapidly brought into a high temperature during engine start so that the exhaust gas purifying system can rapidly be activated.

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: The lubricant metering system for a rotary internal combustion engine has a lubricant metering device connected to the engine to communicate with the working chambers of the engine during the compression phase of operation thereof and is in communication with a source of lubricant to receive lubricant to be metered from the latter in a lubricant reservoir. The lubricant metering device is also connected to deliver metered lubricant from the lubricant reservoir to a place of use in the engine. A differential pressure sensing means is provided in the lubricant metering device to sense the differential gaseous fluid pressure in the working chamber and the lubricant pressure in the lubricant reservoir and to displace lubricant from the lubricant reservoir in response to engine speed and load demand.

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: According to the exemplary embodiment shown, the machine comprises a housing having a chamber formed therewithin which is circumscribed by a plurality of spiralled, parallel and arcuate lands with intervening, narrow grooves, and a rotor journalled therewithin, the rotor having a plurality of spiralled, parallel and arcuate grooves with intervening, narrow ribs. The rotor has a ring-type gear mounted therewithin, and the latter meshes with a gear centrally mounted on a rotor-traversing shaft. The arcuate grooves and ribs are one less in number than the arcuate lands and narrow grooves, and the journalling of the rotor and mesh of the gears causes the rotor to describe an epicyclic rotation relative to the housing. The depicted embodiment comprises an internal combustion engine, however the machine is useful as an expander, fluid motor, and the like.

Abstract: A rotary engine wherein a piston is moving within the inside of a cylindrical housing describing its geometrical center or shaft a hypocycloid while the remaining points are generated by a circumference gyrating in the inside of a hypocycloid. The piston is formed by a cylindrical drum with projecting radial vanes. The drum is supported by a crank mechanism which includes a first crank rotatable about the crankshaft and a second crank eccentrically rotatably supported on the first crank. The drum is rotatably supported on the second crank, and a pinion associated with the second crank meshingly reacts with a stationary crown gear, whereby the drum moves along said hypocycloidal path.

Abstract: The rotary-piston internal combustion engine comprises a trochoidal working chamber with a vertical major axis, a rotor shaft mechanically coupled to a generator and a water pump mounted on the engine housing, an auxiliary drive shaft used for driving an oil pump communicating in series with a water-cooled oil radiator and oil filter, a fuel pump and a lubricator installed on the engine housing. The auxiliary drive shaft is inclined at an angle of 7 to 15 deg of arc in the direction of rotation of the rotor shaft with respect to the working chamber major axis so that the drive shaft geometrical axis intersects the major axis somewhat above the chamber uppermost point and its opposite ends are used to drive the lubricator and the oil pump installed at the respective extremities of the shaft.

Abstract: An orbital internal combustion engine comprises an engine housing having first and second end walls and intermediate, axially spaced first and second annular, inwardly projecting wall members. First and second axial drive shaft portions are installed through the housing first and second end walls respectively. A spool shaped engine rotor having radially outwardly projecting end flanges is installed in the housing with the first and second end flanges closely adjacent to axially outer surfaces of the first and second annular wall members. The rotor is eccentrically rotatably mounted to inner ends of the drive shaft portions. The two annular wall members and rotor ends divide the housing interior into a combustion air plenum at the housing first end, a central chamber and an exhaust gas plenum at the housing second end.

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: A multi-unit rotary combustion engine in which at light loads the engine can be operated on only some of the units with those units having side intake ports and with the other units having peripheral intake ports.

Abstract: Rotary piston engine comprising a casing and a substantially tri-angular rotor disposed in the trochoidal cavity of the casing. The casing is provided with a take-out port for drawing compressed air from the compressing working and a discharge port located to open to the exhaust working chamber. The take-out port is connected through a throttle-controlled valve with the discharge port and so located that squish flow directed to the ignition area is weakened by taking out a part of the compressed gas through the take-out port.

Abstract: Rotary piston engines in which the rotor housing is formed with a peripheral intake port of relatively small area and at least one of the side housings is formed with a side intake port, and the side intake port is used only in high load engine operation.

Abstract: A rotary engine comprises a rotor housing, rotor and seal pieces at the apexes of the rotor, all of which define combustion chambers. Of these combustion chambers, one is divided at the compression cycle into two sections. A mixed gas is explosively ignited only at the combustion chamber section situated on the advancing angle side, so as to impart rotation force to the rotor.

Abstract: Exhaust gas recycling means by which exhaust gas is recycled and introduced, via a port which is formed in the peripheral wall of a rotary piston engine and which port may also serve for introduction of air or an air-fuel mixture required for low-speed operation of the engine, into a leading zone of an intake chamber. Since the port formed in the peripheral wall is so disposed that the air or air-fuel mixture introduced therethrough tend to be stratified at the leading zone of the intake chamber, the recycled exhaust gas also tends to be stratified at the same leading zone so that the recycled exhaust gas tends to exist in vicinity of the spark plug, whereby less exhaust gas is required to be recycled since a given amount of exhaust gas is more effective in preventing production of nitrogen oxides, and there is correspondingly less engine wear and attendant production of hydrocarbons or similar compounds.