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WO1996014493A1 - Moteur rotatif - Google Patents

Moteur rotatif Download PDF

Info

Publication number
WO1996014493A1
WO1996014493A1 PCT/IB1995/000980 IB9500980W WO9614493A1 WO 1996014493 A1 WO1996014493 A1 WO 1996014493A1 IB 9500980 W IB9500980 W IB 9500980W WO 9614493 A1 WO9614493 A1 WO 9614493A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
rotary engine
engine according
chamber
air mixture
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.)
Ceased
Application number
PCT/IB1995/000980
Other languages
English (en)
Inventor
Ciew Chang Pey
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.)
CENTRAD MARKETING Pte Ltd
Original Assignee
CENTRAD MARKETING Pte Ltd
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 CENTRAD MARKETING Pte Ltd filed Critical CENTRAD MARKETING Pte Ltd
Priority to AU37520/95A priority Critical patent/AU3752095A/en
Publication of WO1996014493A1 publication Critical patent/WO1996014493A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/356—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member
    • F01C1/3566—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the outer member the inner and outer member being in contact along more than one line or surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines

Definitions

  • THIS INVENTION relates to a rotary engine and more particularly to a rotary engine having a rotary piston housed in a cylindrical piston housing.
  • the present invention provides a rotary engine comprising: a cylindrical piston housing; a piston mounted for rotation within the piston housing and defining between the piston and the housing at least one space; means for dividing the space into a compression chamber and an expansion chamber; means for chanelling the compressed fuel/air mixture from the compression chamber to a combusion chamber; ignition means to ignite the fuel/air mixture in the combusion chamber; and a propulsion chamber into which the combusted fuel/air mixture expands, thereby exerting a driving force on the piston.
  • Figure 1 shows an exploded perspective view of the component parts of a rotary piston engine embodying the present invention
  • Figure 2 shows the engine of Figure 1 at the start of an induction stroke
  • Figure 3 shows the engine of Figure 1 at the start of a compression stroke
  • Figure 4 shows the engine of Figure 1 during the compression stroke
  • Figure 5 shows the engine of Figure 1 nearing the end of the compression stroke and at the start of the power stroke
  • Figure 6 shows the engine of Figure 1 during the power stroke
  • Figure 7 shows the engine of Figure 1 during the exhaust stroke immediately preceeding the induction stroke shown in Figure 2;
  • FIGS 8 and 9 show details of an expansion chamber
  • Figure 10 diagramatically illustrates an assembly of four rotary pistons on a single drive shaft
  • FIG 11 is a cross-sectional view illustrating another rotary engine embodying the present invention.
  • a rotary piston engine embodying the present invention comprises a cylindrical piston housing 1 and a rotatable piston 2 mounted therein.
  • the rotatable piston 2 comprises an oval block having an upper and a lower flat surface 3, 4 and a generally curved side wall 5 which defines the shape of the oval and presents two axially extended corners 6 defining corner lobes 6 at diametrically opposed locations of the piston 2.
  • the piston 2 is dimensioned to fit within the piston housing such that the two opposing corner lobes 6 of the piston side wall 5 are in contact with the housing 1.
  • a rotatably mounted drive shaft 7 having an octagonal cross-section passes through and is a close fit within an octagonal aperture 8 formed in the centre of the piston 2.
  • the piston 2 is thus rotatable with the drive shaft 7 about the axis of rotation of the drive shaft 7. In the present example shown in the Figures, the piston 2 rotates in a clockwise direction.
  • the piston housing 1 is closed at each end by an annular closure plate (not shown) , the outer periphery of which encloses all the component parts of the piston housing 1, which component parts will be described in detail below, and the inner periphery of which has a diameter which is only slightly larger than the cross- corner distance of the octagonal aperture 8 in the piston, thereby allowing free rotation of the octagonal drive shaft 7.
  • the rotary piston 2 is sealed against the upper and lower annular closure plates by means of brush rings 9 which act as a gasket between the piston 2 and the upper and lower annular closure plates. Lubrication of the brush rings 9 is envisaged to be by the fuel/air mixture.
  • Two substantially semi-cylindrical propulsion chambers 10 are formed within the piston 2 at diametrically opposite positions adjacent the respective corner lobes 6. During rotation of the piston 2, the semi-cylindrical propulsion chambers lead the respective corner lobes.
  • Each propulsion chamber 10 extends into the piston 2 from a rectangular aperture 11 at the surface of the side wall and terminates at an end wall 12 within the piston 2, which end wall 12 is substantially parallel to the piston side wall 5, thus defining a tongue 13 between the piston side wall 5 and the propulsion chamber end wall 12.
  • a free edge 14 of the tongue 13 contacts the internal cylindrical wall la of the piston housing 1 in a position leading the adjacent corner lobe 6 of the piston 2.
  • the piston 2 within the housing 1 defines two separate spaces, the first space 15 being bounded by the upper and lower annular closure plates, the internal cylindrical wall la of the piston housing 1 and a first portion 5a (see Figure 2) of the piston side wall 5 extending from one of the corner lobes 6 to the free edge 14 of the lagging tongue 13.
  • the second space 16 is identical to the first space 15 in shape and is bounded by the upper and lower annular closure plates, the cylindrical wall la of the piston housing and a second portion of the piston side wall 5b (see Figure 2) extending from the other corner lobe 6 to the free edge 14 of the other lagging tongue 13.
  • a spring loaded gate 17 is located in each semi- cylindrical propulsion chamber 10.
  • the gate 17 is hinged along the free edge 14 of the tongue 13 for movement between the rectangular opening 11 of the propulsion chamber 10 (the closed position) and the end wall 12 of the propulsion chamber 10 (the open position) .
  • a bowed compression spring 18 is located between the end wall 12 and the gate 17 to bias the gate 17 toward the opening 11 of the propulsion chamber. In fact, as can be seen in Figures 8 and 9, the gate 17 is actually forced against the internal wall la of the piston housing 1 by the spring 18.
  • the components of the piston housing 1 comprise a pair of fuel/air mixture ports 19, a pair of exhaust valves 20, a pair of spark plugs 21 and a pair of partition rollers 22.
  • the components are housed within the wall of the piston housing 1 and are positioned radially around the piston housing 1 at the following angular locations: the first fuel/air mixture port 19 at 0°; the first spark plug 21 at substantially 90°; the first partition roller 22 at substantially 110°; the first exhaust valve 20 at 135°; the second fuel/air mixture port 19 at 180°; the second spark plug 21 at substantially 270°; the second partition roller 22 at substantially 290°; and the second exhaust valve 20 at 315°.
  • the fuel/air mixture ports 19 , the spark plugs 21 and the exhaust valves 20 are all recessed back from the internal wall la of the piston housing 1 so as not to interfere with the rotation of the piston 2.
  • Each spark plug 21 is housed in a recess 23 which constitutes a combustion chamber 23 of the engine.
  • the fuel/air mixture ports 19 are operable to supply into the spaces 15, 16 a fuel/air mixture for combustion, preferably by injection.
  • the exhaust valves 20 are normally closed and are openable to exhaust a combusted fuel/air mixture.
  • the spark plugs 21 are operable to ignite a compressed fuel/air mixture.
  • the partition rollers 22 comprise solid cylindrical blocks which are housed in recesses 24 in the piston housing 1.
  • the partition rollers 22 are rotatable whilst being held in the recesses 24.
  • the partition rollers 22 are biased out of the recesses 24 by compression springs (not shown) , thus pushing the partition rollers 22 into contact with the rotatable piston 2 and causing the partition rollers 22 to rotate during rotation of the piston 2 whilst maintaining a sealed contact with the rotatable piston 2.
  • the partition rollers 22 follow the contours of the piston 2 as the piston 2 rotates.
  • the rollers 22 divide each of the first and second spaces 15, 16 into two chambers, namely an expansion chamber 25 leading each partition roller 22 and a compression chamber 26 lagging each partition roller 22.
  • the wall of the piston housing 1 is of sufficient thickness to be formed with coolant conduits 27 therein.
  • the coolant conduits 27 are located radially around the piston housing 1 and may be filled with a coolant such as water or the like. Preferably, the coolant is continually circulated through the cooler conduits 27.
  • Figure 4 shows the piston 2 of Figure 3 rotated through a further 45°.
  • the partition rollers 22 now divide the first and second spaces 15, 16 equally into an expansion chamber 26 experiencing sub atmospheric pressure and a compression chamber 25 in which the fuel/air mixture is being compressed.
  • the fuel/air mixture cannot escape under the free edges 14 of the tongues 13 which form a sealing contact with the piston housing internal wall la.
  • Figure 5 shows the piston 2 of Figure 4 rotated through a further 45°.
  • the gates 17 are now directly opposite the spark plugs 21 and the compressed fuel/air mixtures are compressed into the recesses 23 in which the spark 21 plugs are mounted. These recesses 23 are separate from and not in communcation with the compression chambers 26.
  • Figures 8 and 9 show details of the gate 17, spark plug la and partition roller configuration at two successi ve instants immediately before the position shown in Figure 5. Referring to Figures 8 and 9, as piston 2 moves from the position show in Figure 4 to the position shown in Figure 5 the compressed fuel/air mixture is channeled into the recess 23 occupied by the spark plug 21 whilst the tongue passes over the spark plug recess 23.
  • the spark plugs 21 are activated by a timing device on the octagonal drive shaft 7 causing ignition of the compressed fuel/air mixture in the spark plug recess 23.
  • the drive shaft 7 can be used as a timing device by welding studs or the like to the faces of the shaft 7 for activating the spark plugs 21, the fuel/air mixture ports 19 and the exhaust valves 20.
  • the above described rotary engine is a four stroke cycle engine but can be converted to a two stroke cycle.
  • a four piston rotary piston engine produces sixteen power strokes in a 360° rotation of the drive shaft whilst a reciprocating piston engine produces two power strokes from a similar set up. It is, therefore, envisaged that a rotary piston engine embodying the present invention may produce 6 to 8 times the torque of a reciprocating piston engine of similar configuration.
  • the rotary piston engine described with reference to Figures 1 to 9 is for use in an engine comprising four such pistons (see Figure 10) so therefore an octagonal shaft is used.
  • either a square or octagonal shaft may be used and in cases where three drive pistons are required an hexagonal shaft may be used.
  • the sides of the shaft are instrumental to the timing of the induction, compression and ignition strokes.
  • the power strokes of each of the four pistons are staggered such that they occur at regular intervals to one another.
  • the combusted fuel/air mixture exhausted through the exhaust valves 20 is injected in a supercharged state to a further auxiliary rotary piston engine 30.
  • Any fuel/air mixture which has not been fully combusted may be combusted therein so that further power may be derived from the engine and so that a final clean exhaust may be discharged from the auxiliary engine 30.
  • the exhaust is preferably discharged through a catalytic converter 31 and silencer to the atmosphere.
  • an engine embodying the present invention will have reduced vibration and exhaust problems compared to known reciprocating piston engines and rotary piston engines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

Le moteur rotatif de la présente invention comporte: un logement de piston cylindrique; un piston monté en rotation à l'intérieur du logement de piston et définissant au moins un volume entre le piston et le logement; un organe divisant le volume en une chambre de compression et une chambre de détente; un organe canalisant le mélange combustible/air de la chambre de compression vers une chambre de détente; un organe d'allumage allumant le mélange combustible/air dans la chambre de combustion; et une chambre de propulsion dans laquelle se détend le mélange brûlé combustible/air, exerçant par conséquent une force motrice sur le piston.
PCT/IB1995/000980 1994-11-08 1995-11-08 Moteur rotatif Ceased WO1996014493A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU37520/95A AU3752095A (en) 1994-11-08 1995-11-08 A rotary engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9422514A GB2294976A (en) 1994-11-08 1994-11-08 Rotary internal combustion engine
GB9422514.1 1994-11-08

Publications (1)

Publication Number Publication Date
WO1996014493A1 true WO1996014493A1 (fr) 1996-05-17

Family

ID=10764066

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB1995/000980 Ceased WO1996014493A1 (fr) 1994-11-08 1995-11-08 Moteur rotatif

Country Status (3)

Country Link
AU (1) AU3752095A (fr)
GB (1) GB2294976A (fr)
WO (1) WO1996014493A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111997748A (zh) * 2020-09-07 2020-11-27 陕西新年动力科技有限公司 一种滚动密封式转子发动机

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR1002755B (el) * 1996-09-06 1997-08-27 Περιστροφικος θερμοκινητηρας με εσωτερικη προθερμανση.
DE19812853A1 (de) * 1998-03-21 1999-09-23 Ernst Juraschka Epi- und Hypozylkloidische Drehkolbenmaschine mit Rollen oder Rollensegmente als Dichtmodule
RU2143078C1 (ru) * 1999-03-26 1999-12-20 Поляков Виктор Иванович Двигатель внутреннего сгорания полякова в.и. и гидроэлектростанция
RU2143570C1 (ru) * 1999-06-03 1999-12-27 Поляков Виктор Иванович Двигатель полякова в.и., энергоблок теплоэлектростанции, топливоприготовительный агрегат, сепаратор газовый центробежный, центробежный парогазовый сепаратор, теплообменник трубчатый

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR418470A (fr) * 1910-07-21 1910-12-10 Guillaume Bouret Moteur rotatif à glissières multiples
DE1451755A1 (de) * 1965-04-05 1969-10-02 Hans Grosse Drehkolben-Kompressormotor
FR2125644A5 (fr) * 1971-02-15 1972-09-29 Clausin Pierre
US3716989A (en) * 1971-03-24 1973-02-20 R Moreira Rotary jet twin-propulsion engine
US3797464A (en) * 1971-12-06 1974-03-19 H Abbey Balanced rotary combustion engine
DE2607376A1 (de) * 1976-02-24 1977-08-25 Werner Moster Drehkolbenmaschine, insbesondere brennkraftmaschine fuer otto- und dieselverfahren
DE4225300A1 (de) * 1992-07-31 1992-11-26 Meyer Karl Heinz Ein-takt-kreiskolbenmotor
DE9316552U1 (de) * 1993-10-29 1994-01-20 Heidenescher, Ferdinand, 49143 Bissendorf Kreiskolbenmotor für den Betrieb im Viertaktverfahren

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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US4127094A (en) * 1973-02-12 1978-11-28 Barry Leonard D Engine
US3949712A (en) * 1973-12-20 1976-04-13 General Motors Corporation Rotary-piston internal combustion engine having a combustion antechamber
GB1471720A (en) * 1974-12-20 1977-04-27 Cam Gears Ltd Rotary positive-displacement fluid pumps
GB1591124A (en) * 1976-10-19 1981-06-17 Blaser Richard Florencio Method and apparatus for control of pressure in internal combustion engines
GB1592279A (en) * 1977-12-20 1981-07-01 Murrumbooee Ltd Internal combustion rotary engines
EP0203973A1 (fr) * 1984-12-10 1986-12-10 DAVIES, Bryan John Moteur rotatif avec chambre de combustion exterieure
JPH03500566A (ja) * 1988-04-18 1991-02-07 モスコフスキ　インスティテュト　インゼネロフ　ゼレズノドロズノゴ　トランスポルタ　イメニ　エフ．エ．ジェルジンスコゴ ローラ・羽根型流体機械

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR418470A (fr) * 1910-07-21 1910-12-10 Guillaume Bouret Moteur rotatif à glissières multiples
DE1451755A1 (de) * 1965-04-05 1969-10-02 Hans Grosse Drehkolben-Kompressormotor
FR2125644A5 (fr) * 1971-02-15 1972-09-29 Clausin Pierre
US3716989A (en) * 1971-03-24 1973-02-20 R Moreira Rotary jet twin-propulsion engine
US3797464A (en) * 1971-12-06 1974-03-19 H Abbey Balanced rotary combustion engine
DE2607376A1 (de) * 1976-02-24 1977-08-25 Werner Moster Drehkolbenmaschine, insbesondere brennkraftmaschine fuer otto- und dieselverfahren
DE4225300A1 (de) * 1992-07-31 1992-11-26 Meyer Karl Heinz Ein-takt-kreiskolbenmotor
DE9316552U1 (de) * 1993-10-29 1994-01-20 Heidenescher, Ferdinand, 49143 Bissendorf Kreiskolbenmotor für den Betrieb im Viertaktverfahren

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111997748A (zh) * 2020-09-07 2020-11-27 陕西新年动力科技有限公司 一种滚动密封式转子发动机
CN111997748B (zh) * 2020-09-07 2023-10-31 陕西新年动力科技有限公司 一种滚动密封式转子发动机

Also Published As

Publication number Publication date
GB2294976A (en) 1996-05-15
GB9422514D0 (en) 1995-01-04
AU3752095A (en) 1996-05-31

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