EP0413541A1 - Moteur à combustion interne À  pistons rotatifs - Google Patents

Moteur à combustion interne À  pistons rotatifs Download PDF

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Publication number
EP0413541A1
EP0413541A1 EP90308887A EP90308887A EP0413541A1 EP 0413541 A1 EP0413541 A1 EP 0413541A1 EP 90308887 A EP90308887 A EP 90308887A EP 90308887 A EP90308887 A EP 90308887A EP 0413541 A1 EP0413541 A1 EP 0413541A1
Authority
EP
European Patent Office
Prior art keywords
rotor
cylinder
engine
valve
rotary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90308887A
Other languages
German (de)
English (en)
Inventor
Nicholas Paul Shepherd
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0413541A1 publication Critical patent/EP0413541A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/20—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with dissimilar tooth forms

Definitions

  • This invention relates to a rotary internal combustion engine.
  • a rotary internal combustion engine comprising a rotor mounted for rotation concentrically within a closed ended cylindrical bore formed within a cylinder block, the rotor being separated from the internal cylinder wall by an annular chamber spanned and swept by two rotor blades secured to, spaced about and extending along the side of the rotor and sealingly engagable with the inner periphery of the cylinder; a combustion gas inlet port and an exhaust gas outlet port to the annular chamber; a first rotary cylinder valve mounted in the cylinder block for rotation about an axis parallel to that of the rotor, connecting into and spacing across the annular chamber and disposed between the inlet and the outlet ports, and a second rotary cylinder valve mounted in the cylinder block for rotation about an axis parallel to that of the rotor connecting into and spanning across the annular chamber, both the first and the second cylinder valves being provided with elongate slots along their length adapted to receive and cooperate with the rot
  • the second rotary cylinder valve may contain or connect to a reservoir chamber for the collection under increased pressure of combustion gas.
  • a rotary internal combustion engine effectively free from epicyclic and reciprocating motion.
  • the rotary valves enable power to be extracted from the engine by means of the bladed rotor.
  • the construction enables the cylindrical valves to "roll" synchronously against the rotor, whilst allowing the rotor blades to pass by and maintain their cyclic path and at the same time provide a boundary for combustion and exhaust gases.
  • the internal combustion engine comprises a main shaft 1 and a principle rotor 2 connected by means of gearing 3 to cylindrical valves 4 and 5.
  • a pair of diametrically opposed rotor blades 6 and 7 are secured to and extend along the periphery of the rotor 2 such as to bear by means of sealing strips 12 and 13 against the cylindrical inner wall 19 of the cylinder block 9.
  • the cylindrical inner wall 19 of the cylinder block and the concentric rotor 2 define between them an annular chamber 20 in association with end plates 22 and 35.
  • the rotor blades 6 and 7 include outwardly extending sealing cheeks 25 and 26 on each side urged apart by spring means 28.
  • Each sealing cheek is provided with a bottom edge 29 locatable under a rim on the respective blade to limit outward movement.
  • the rotor blades are povided with keyways 30 for attachment to the rotor.
  • the sealing strip 12 is located within an appropriate groove 31 in each rotor blade and is urged outwardly by spring means 32. The lateral movement is kept to a minimum whilst allowing for wear and play tolerances.
  • the spring forces being sufficient to contain pressures of combustion.
  • a combustion gas inlet port 8 and an exhaust gas outlet port 16 connect to the annular chamber 20.
  • a spark ignition plug 14 is connected into a combustion chamber portion 15 of the annular chamber 20.
  • the second rotary valve 5 is provided with a passage 10 leading to a reservoir for compressed combustion gas 11.
  • Figure 2 shows the engine with the combustion chamber 15 formed between valve 5 and blade 7 ready for ignition with compressed combustion gas therein.
  • Figure 3 shows the arrangement after ignition of the combustion gas, with the rotor blade 7 being swept towards the exhaust port 16 and the cylindrical valve 4, at the same time sweeping out combustion gas through outlet port 16 from a previous combustion ahead of rotor blade 7. At the same time combustion gas is sweeping into the annular chamber via inlet port 8 behind rotor blade 6 which is also compressing and feeding ahead of itself further combustion gas towards rotary valve 5.
  • Figure 4 shows the engine with the rotor blades 6 and 7 engaging in the appropriately shaped partly cylindrical slots or grooves 23, 24 in cylindrical valves 4 and 5. At this position exhaust gases can leave via outlet port 16, whilst combustion gases compressed ahead of rotor blade 6 are forced via passage 10 into reservoir 11.
  • the rotating cylinder valve 5 turns such that the passage 10 is opened to the reservoir chamber 11 therein.
  • the cylinder valve curve surfaces synchronously mate with the rotor maintaining a boundary to the gases, whilst the rotor blades, by means of sealing edges 12, 13 ensure sealing with the cylinder block 9, and as the rotor blades pass by the cylindrical valves maintain an orbital path with respect to the main shaft and rotor.
  • the sealing cheeks 25 and 26 of each rotor blade engage and co-operate within the cylindrical valves 4 and 5 as the rotor blades pass therethrough, thereby assisting gas transfer efficiency.
  • the number of cylinder valves and rotor blades may be, in some embodiments of the invention, greater than those described hereinabove.
  • passages for gas tranference may also be varied to suit alternative arrangements for compression and combustion chamber segregation.
  • Cooling means may be incorporated throughout the block constituting the combustion chamber by means of channels 17 via which fluid may be passed, utilising the power from the engine to achieve the fluid flow.
  • the reservoir 11 may be part of the cylindrical valve 5 as shown or externally thereto, the volume effecting the peak compression pressure an initial period to operational pressure levels.
  • Lubrication of relevant surfaces may be provided using appropriate channels 18 and 27 through which cooling may also be effected and surface contact areas reduced for the rotor and cylinder valves to reduce friction losses.
  • Diesel fuels may be used with the use of injectors to achieve the high compression required along with rechannelled gas paths to enable high performance.
  • the engine may be modified from that illustrated in that pressurised gas or liquid may be utilised to extract power.
  • the engine herein described differs from and is a significant improvement over the forementioned commercially developed "rotary" engine in that the output shaft may be fixed to the rotor directly thereby removing the need for heavily loaded precision gears, although simple gearing means are, as illustrated, used for synchronisation of the cylindrical valves with the principal rotor.
  • the rotor additionally is fixed to the centre of the cylinder block, with the centre of gravity thereof lying on the centre line of the output shaft to provide a freedom from eccentric movement thereby, and hence reduction in vibration.
  • the rotor blades travel concentric to the main output shaft, and the cylindrical valves are used to allow the blades to rotate freely whilst allowing either of the gas to pass in front of the blade or behind it, gas transfer being accomplished either side of one of the cylindrical valves.
  • the overall annular chamber including the combustion chamber (formed by the main cylinder block) is of a compact configuration of primarily diamond configuration and of similar dimensions in length as to its width and depth. However of course the shape can be varied to achieve differently dimensioned combustion chambers for optimisation of effeciency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
EP90308887A 1989-08-18 1990-08-13 Moteur à combustion interne À  pistons rotatifs Withdrawn EP0413541A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8918932 1989-08-18
GB898918932A GB8918932D0 (en) 1989-08-18 1989-08-18 Rotary internal combustion engine

Publications (1)

Publication Number Publication Date
EP0413541A1 true EP0413541A1 (fr) 1991-02-20

Family

ID=10661859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90308887A Withdrawn EP0413541A1 (fr) 1989-08-18 1990-08-13 Moteur à combustion interne À  pistons rotatifs

Country Status (2)

Country Link
EP (1) EP0413541A1 (fr)
GB (1) GB8918932D0 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008108743A1 (fr) * 2007-03-02 2008-09-12 Peter Varga Moteur rotatif à combustion interne avec chambre annulaire
WO2008121082A1 (fr) * 2007-04-03 2008-10-09 Peter Varga Moteur à combustion interne rotatif avec chambre annulaire

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784554A (en) * 1955-08-30 1957-10-09 Clifford Edmund Brewer Improvements in or relating to rotary motors, compressors or the like
US3453992A (en) * 1968-07-08 1969-07-08 Anthony Graham Rotary type device
FR1594801A (fr) * 1968-11-20 1970-06-08
FR2113141A5 (fr) * 1970-10-22 1972-06-23 Przybylski Zdzislaw
US3863610A (en) * 1972-08-18 1975-02-04 Raymond G Spinnett Rotary converters having specialized interleaving elements
FR2243607A5 (en) * 1973-09-10 1975-04-04 Widemann Antoine Rotary I.C. engine with gear type rotors - blades of central rotor engage recesses on adjacent rotors
DE3543944A1 (de) * 1985-12-12 1987-06-19 Werner Gleixner Brennkraftmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB784554A (en) * 1955-08-30 1957-10-09 Clifford Edmund Brewer Improvements in or relating to rotary motors, compressors or the like
US3453992A (en) * 1968-07-08 1969-07-08 Anthony Graham Rotary type device
FR1594801A (fr) * 1968-11-20 1970-06-08
FR2113141A5 (fr) * 1970-10-22 1972-06-23 Przybylski Zdzislaw
US3863610A (en) * 1972-08-18 1975-02-04 Raymond G Spinnett Rotary converters having specialized interleaving elements
FR2243607A5 (en) * 1973-09-10 1975-04-04 Widemann Antoine Rotary I.C. engine with gear type rotors - blades of central rotor engage recesses on adjacent rotors
DE3543944A1 (de) * 1985-12-12 1987-06-19 Werner Gleixner Brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008108743A1 (fr) * 2007-03-02 2008-09-12 Peter Varga Moteur rotatif à combustion interne avec chambre annulaire
WO2008121082A1 (fr) * 2007-04-03 2008-10-09 Peter Varga Moteur à combustion interne rotatif avec chambre annulaire

Also Published As

Publication number Publication date
GB8918932D0 (en) 1989-09-27

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