US3921602A - Rotary cylinder internal combustion engine - Google Patents

Rotary cylinder internal combustion engine Download PDF

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Publication number
US3921602A
US3921602A US541326A US54132675A US3921602A US 3921602 A US3921602 A US 3921602A US 541326 A US541326 A US 541326A US 54132675 A US54132675 A US 54132675A US 3921602 A US3921602 A US 3921602A
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US
United States
Prior art keywords
crankshaft
rotor
engine
stator
axis
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.)
Expired - Lifetime
Application number
US541326A
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English (en)
Inventor
Armand Froumajou
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.)
Automobiles Peugeot SA
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Automobiles Peugeot SA
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Filing date
Publication date
Application filed by Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Application granted granted Critical
Publication of US3921602A publication Critical patent/US3921602A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F02B57/00—Internal-combustion aspects of rotary engines in which the combusted gases displace one or more reciprocating pistons
    • F02B57/04—Control of cylinder-charge admission or exhaust
    • 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
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
    • 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

Definitions

  • the four-stroke internal combustion engine comprises a stator having induction and exhaust ports, a rotor rotatable in the stator and defining cylinders with the [30] Foreign Application Priority Data stator in whichrpistons connected to a crankshaft are Jan. 24, 1974 France 74.02390 slidable.
  • a transmission device interposed between the crankshaft and rotor produces a given relative speed [52] US. Cl 123/44 D of rotation therebetween, the feature of the engine is [51] Int. Cl.
  • the present invention relates to a four-stroke internal combustion engine whose cylinders are arranged radially in a rotor.
  • a first known arrangement employed in such engines consists in maintaining the pistons constantly applied against a fixed centre cam whose profile is such that each piston undergoes two to-and-fro movements per revolution of the rotor.
  • These arrangements have two serious drawbacks: on one hand, the speed of rotation of the rotor is high and gives rise to piston ring problems very difficult to solve and, on the other, the linear contact on the cam results in excessive Hertz pressures.
  • each cylinder In another arrangement the pistons of each cylinder are connected by a connecting rod to the crankpin of a crankshaft, the ratio between the speeds of rotation of the rotor containing the cylinders and the crankshaft being such that each piston undergoes an even number of to-and-fro movements per revolution of the rotor.
  • the desire for maximum compactness is at the cost of balance. Indeed, there is incompatibility between great compactness, which can only be achieved with rather large inclinations of the connecting rods, and good balance which requires small inclinations.
  • An object of the invention is to provide an internal combustion engine having rotary cylinders operating on the four-stroke cycle which is particularly compact and as perfectly balanced as possible owing in particular to the elimination of the connecting rod-crank systems.
  • a fourstroke internal combustion engine comprising a stator having induction and exhaust ports, a rotor rotatably mounted in the statorand defining cylinders in which are received pistons connected to a crankshaft, and a transmission device between the crankshaft and the rotor for establishing therebetween a given relative speed.
  • the stator has two additional ports. namely an inlet port and a delivery port, with which additional ports each cylinder and piston assembly cooperates in the course of a part of each revolution of the rotor for performing a pumping function.
  • the invention is more particularly applicable to an engine having a crankshaft providedwith an eccentric crankpin, four cylinders arranged in the form of a cross and having axes perpendicular to the axis of the crankshaft, two pairs of pistons, each pair being mounted to rotate on a journal ofa common balancing element which is rotatably mounted on the crankpin, the axes of the journals and of the crankpin being parallel and contained in the same plane and the offset of the crankpin from the axis of the crankshaft beingequal to one half of the distance between said journals.
  • Another feature of this engine is that the rotor rotates in the stator about an axis perpendicular to the axes of the cylinders, the transmission device between the rotor and the crankshaft being such that the ratio between the speeds of rotation of the crankshaft and rotor is a positive or negative even whole number different from +2.
  • the direction of rotation of the crankshaft is opposite to that of the rotor and its speed of rotation is four-times higher so that it is possible to employ, per revolution of the rotor, fourto-andfro movements of each piston to achieve two complete four-stroke drive cycles and one to-and-fro movement of the piston to ensure the pumping through said additional ports.
  • FIG. 1 is a cross-sectional view of an engine according to the invention.
  • FIG. 2 is a sectionalview taken on line 2 2 of FIG.
  • FIG. 3 is a diagram showing the different phases of the cycle of operation of a cylinder and piston assembly for one revolution of the rotor.
  • the engine according to the invention comprises a stator 1 having a roughly cylindrical outer shape made in two parts 2, 3 which are assembled in a longitudinal joint plane 4.
  • This stator defines an inner volume defined by a spherical surface 5 having the center'0.
  • This inner volume is defined laterally, on one side by a side wall 6, and, on the other, by a side wall 7 and a planet gear carrier 8.
  • a rotor 9 made in two parts 10, ll assembled in a transverse joint plane 12.
  • the semi-rotor 10 has a bearing portion 13journalled in a bearing 14 of the side wall 6 and the semi-rotor 11 has a bearing portion 15 journalled in a bearing 16 of the side wall 7.
  • the two semi-rotors surround four cylinder liners l7, l8, 19, 20 which are in opposed relation in pairs on two axes Y-Y, ZZ intersecting at the centre 0.
  • Each liner is positioned by a rib 21 engaged in a groove 22 of the rotor 9.
  • a crankshaft 23 is journalled in a bearing 24 of the rotor and in a bearing 25 of the planet gear carrier 25.
  • the bearings 14, 16, 24 and 25 have a common axis X-X passing. through the centre 0 of the spherical inner surface 5 of the stator l. i
  • a gear pinion 26 connected to rotate with the crankshaft 23 meshes with planet gears such as 27.
  • Each of these gears 27 is freely rotatable on a pin 28 carried by the planet gear carrier and meshes with a'ring gear 29 secured to the rotor 9.
  • the number of teeth of the ring gear 29 is equal to four times the number of teeth ofthe gear pinion 26 so that the speed of rotation of the crankshaft is four times that of the rotor in absolute value, but in the opposite direction.
  • the crankshaft 23 has a crankpin 30 which is offset or eccentric a distance e from the axisX-X.
  • a balancing element 31 mounted on the crankpin 30 to be freely rotatable is a balancing element 31 having a cylindrical centre bearing portion 32 and two cylindrical lateral bearing portions 33.
  • the bearing portion 32 is offset to one side of the axis of the crankpin 30 to an extent e and bearing portions 33 are offsetto the opposite side of the axis of the crankpin to the same extent e.
  • the bearing portion 32 is journalled in a bore formed in a strut 34 rigidly interconnecting two opposed pistons 35, 36 which are respectively slidably mounted in the cylinders 17 and 19.
  • the centre of the bearing portion 32 is, on the axis YY, at equal distances from the two pistons 35 and 36.
  • the bearing portions 33 are journalled in bores formed in twohalves of a strut 37 rigidly interconnecting two opposite pistons 38, 39 respectively slidably mounted in the cylinders 18 and 20.
  • the centre of the bearing portion 33 ' is, on the axis ZZ, at equal distances from the two pistons 38 and 39.
  • each cylinder between the pistons and the spherical surface of the stator constitute the"combustion chambers of the engine.
  • a seal between the pistons and the cylinders is afforded by piston rings 40 and a seal between the rotor and the stator is afforded around each cylinder by circular rings 41 disposed in grooves of each liner such as 17.
  • the stator half 2 has externally two semicircularpassages 42 receiving the carburated gases by way of an orifice 43 and communicating with the interior of the stator by way of induction ports 44, 45.
  • Exhaust ports 46, 47 are also formed in the stator l which also serves as a support for the spark plugs 48, 49.
  • the angular distance between the two plugs, or between the induction ports, or between the exhaust ports, is equal to 2/5 of a circumference, namely 144.
  • These various ports and the plugs are moreover suitably disposed along the periphery of the stator with respect to the upper dead centre and lower dead centre positions of the pistons respectively designated by the letters H 8,, H B H B the rotor rotating in the direction of arrow F,.
  • the stator half 3 has an inlet port 50 and a delivery port 51 which are placed circumferentially between the exhaust port 47 and the induction port 45.
  • the port 50 is placed between the positions H and B and the port 51 between the positions B and H.
  • each piston undergoes one to-and-fro movement in each cylinder.
  • the pump operation corresponds to: H B suction; B H delivery.
  • the pumping operation can be employed as a source of pulsating air or as a source of suction in very diverse applications:
  • the pulsating air can be mixed with the exhaust gases to ensure their postcombustion.
  • This arrangement has moreover the advantage of furnishing a supply of air proportionate to the speed of rotation of the engine.
  • vacuum produced can be employed for various control.
  • stator mounted to rotate in the stator and defining with the stator cylinders, a crankshaft mounted to rotate in the stator, pistons slidably mounted in the cylinders and connected to the. crankshaft, and a transmission device interposed between the crankshaft and the rotor to produce between the crankshaft and the rotor a given relative speed of rotation; the provision in the stator of additional ports comprising an inlet port and a delivery port, with which additional ports each piston and corresponding cylinder are cooperable in the course of a part of each revolution of the rotor for performing a pumping function.
  • crankshaft has an eccentric crankpin
  • a balancing element is rotatably mounted on the crankpin and definesjournals which are parallel to the axis of the crank and contained in the same plane as the axis of the crankpin, there being four cylinders arranged in the form of a cross and having their axes perpendicular to the axis of the crankshaft, and two pairs of pistons, each pair of pistons being mounted to rotate on a journal of the balancing element, the offset of the crankpin from the axis of the crankshaft being equal to one half of the distance between said journals.
  • crankshaft carries the counterweights through the medium of an element secured to the crankshaft to rotate with the crankshaft.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Hydraulic Motors (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
US541326A 1974-01-24 1975-01-15 Rotary cylinder internal combustion engine Expired - Lifetime US3921602A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7402390A FR2259239B1 (it) 1974-01-24 1974-01-24

Publications (1)

Publication Number Publication Date
US3921602A true US3921602A (en) 1975-11-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US541326A Expired - Lifetime US3921602A (en) 1974-01-24 1975-01-15 Rotary cylinder internal combustion engine

Country Status (4)

Country Link
US (1) US3921602A (it)
JP (1) JPS5217161B2 (it)
DE (1) DE2502709A1 (it)
FR (1) FR2259239B1 (it)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010719A (en) * 1973-05-04 1977-03-08 Lappa Cleto L Rotary internal combustion engine
DE3312269A1 (de) * 1983-04-05 1984-10-11 Aldon 6730 Haßloch Gabrisch Verbrennungsmotor
US4850313A (en) * 1988-02-16 1989-07-25 Peter Gibbons Cruciform engine
DE3941256C1 (en) * 1989-12-14 1991-05-02 Fritz 6000 Frankfurt De Opel High compression rotary piston engine - has circulating piston drum with three pistons in circular surrounding casing
US5375564A (en) * 1989-06-12 1994-12-27 Gail; Josef Rotating cylinder internal combustion engine
US5524577A (en) * 1992-03-16 1996-06-11 Clifford; Colin A. Rotary engine
WO1998030792A1 (en) * 1997-01-06 1998-07-16 Farrington Michael C R Orbital internal combustion engine
US6148775A (en) * 1995-09-15 2000-11-21 Farrington; Michael C. R. Orbital internal combustion engine
US6591791B2 (en) * 2000-04-26 2003-07-15 Claudio De Bei Spark-ignition rotary internal-combustion engine
US20040216703A1 (en) * 1997-11-12 2004-11-04 Gemtech Corporation Limited Radial motor/pump
US20040256809A1 (en) * 2003-04-09 2004-12-23 Dimitrios Dardalis Apparatus and method for rotating sleeve engine hydrodynamic seal
WO2005068781A1 (en) * 2004-01-14 2005-07-28 Claudio De Bei Rotary-alternating internal combustion engine
US20110171051A1 (en) * 2005-03-09 2011-07-14 Fibonacci International, Inc. Rotary engine swing vane apparatus and method of operation therefor
ITVI20100199A1 (it) * 2010-07-21 2012-01-22 Maurizio Morbin Motore a combustione interna
WO2015054505A1 (en) 2013-10-09 2015-04-16 Chart Inc. Spin pump with spun-epicyclic geometry

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5757609Y2 (it) * 1978-07-06 1982-12-10
EP0025071A1 (de) * 1979-09-08 1981-03-18 Friedhelm Schwarz Hubkolbentriebwerk
DE3919168A1 (de) * 1989-06-12 1990-12-13 Josef Gail Kolbenmaschine
FR3041035A1 (fr) * 2015-09-11 2017-03-17 Laurent Paris Moteur thermique avec rotor traverse par le chemin de deplacement alternatif en translation d’au moins un piston
RU2741166C1 (ru) * 2020-07-08 2021-01-22 Михаил Иванович Енов Уравновешенный роторный двигатель внутреннего сгорания

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1138388A (en) * 1914-04-01 1915-05-04 James F Levering Rotary internal-combustion engine.
US1331749A (en) * 1916-05-05 1920-02-24 Phelps M Freer Internal-combustion engine
US1705130A (en) * 1927-08-11 1929-03-12 Mcklusky John Internal-combustion engine
US2707461A (en) * 1950-02-08 1955-05-03 Albert P Smith Rotary engine
US3205877A (en) * 1963-01-30 1965-09-14 Frank J Rychlik Radial engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2015623A1 (en) * 1969-04-28 1970-11-12 Pfeifer, Charles F,, New Cannan, Conn, (V.Sf.A.) Binding and detaching a surface-material to/ - from a substrate molten binder
DE2015697A1 (en) * 1969-09-09 1971-05-19 Pfeifer Ch Composite strip material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1138388A (en) * 1914-04-01 1915-05-04 James F Levering Rotary internal-combustion engine.
US1331749A (en) * 1916-05-05 1920-02-24 Phelps M Freer Internal-combustion engine
US1705130A (en) * 1927-08-11 1929-03-12 Mcklusky John Internal-combustion engine
US2707461A (en) * 1950-02-08 1955-05-03 Albert P Smith Rotary engine
US3205877A (en) * 1963-01-30 1965-09-14 Frank J Rychlik Radial engine

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4010719A (en) * 1973-05-04 1977-03-08 Lappa Cleto L Rotary internal combustion engine
DE3312269A1 (de) * 1983-04-05 1984-10-11 Aldon 6730 Haßloch Gabrisch Verbrennungsmotor
US4850313A (en) * 1988-02-16 1989-07-25 Peter Gibbons Cruciform engine
US5375564A (en) * 1989-06-12 1994-12-27 Gail; Josef Rotating cylinder internal combustion engine
DE3941256C1 (en) * 1989-12-14 1991-05-02 Fritz 6000 Frankfurt De Opel High compression rotary piston engine - has circulating piston drum with three pistons in circular surrounding casing
US5524577A (en) * 1992-03-16 1996-06-11 Clifford; Colin A. Rotary engine
US5682843A (en) * 1992-03-16 1997-11-04 Clifford; Colin A. Rotary engine
US6148775A (en) * 1995-09-15 2000-11-21 Farrington; Michael C. R. Orbital internal combustion engine
WO1998030792A1 (en) * 1997-01-06 1998-07-16 Farrington Michael C R Orbital internal combustion engine
US20040216703A1 (en) * 1997-11-12 2004-11-04 Gemtech Corporation Limited Radial motor/pump
US6883473B2 (en) * 1997-11-12 2005-04-26 Anthony Leonardus Wondergem Radial motor/pump
US6591791B2 (en) * 2000-04-26 2003-07-15 Claudio De Bei Spark-ignition rotary internal-combustion engine
US20040256809A1 (en) * 2003-04-09 2004-12-23 Dimitrios Dardalis Apparatus and method for rotating sleeve engine hydrodynamic seal
US7004119B2 (en) * 2003-04-09 2006-02-28 Dimitrios Dardalis Apparatus and method for rotating sleeve engine hydrodynamic seal
WO2005068781A1 (en) * 2004-01-14 2005-07-28 Claudio De Bei Rotary-alternating internal combustion engine
US20110171051A1 (en) * 2005-03-09 2011-07-14 Fibonacci International, Inc. Rotary engine swing vane apparatus and method of operation therefor
US9057267B2 (en) * 2005-03-09 2015-06-16 Merton W. Pekrul Rotary engine swing vane apparatus and method of operation therefor
ITVI20100199A1 (it) * 2010-07-21 2012-01-22 Maurizio Morbin Motore a combustione interna
WO2015054505A1 (en) 2013-10-09 2015-04-16 Chart Inc. Spin pump with spun-epicyclic geometry
US9771931B2 (en) 2013-10-09 2017-09-26 Chart Inc. Spin pump with spun-epicyclic geometry
US20180073493A1 (en) * 2013-10-09 2018-03-15 Chart Inc. Spin pump with spun-epicyclic geometry
US10465669B2 (en) * 2013-10-09 2019-11-05 Chart Inc. Spin pump with spun-epicyclic geometry having piston bores capped with caps including ducts or valves within the rotor

Also Published As

Publication number Publication date
DE2502709A1 (de) 1975-07-31
JPS5217161B2 (it) 1977-05-13
FR2259239A1 (it) 1975-08-22
FR2259239B1 (it) 1976-11-26
JPS50102713A (it) 1975-08-14

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