US3286698A - Rotary engines - Google Patents

Rotary engines Download PDF

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Publication number
US3286698A
US3286698A US335129A US33512964A US3286698A US 3286698 A US3286698 A US 3286698A US 335129 A US335129 A US 335129A US 33512964 A US33512964 A US 33512964A US 3286698 A US3286698 A US 3286698A
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US
United States
Prior art keywords
stator
combustion
rotor
lobes
bracing members
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
US335129A
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English (en)
Inventor
Peras Lucien
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.)
Renault SAS
Regie Nationale des Usines Renault
Original Assignee
Renault SAS
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 Renault SAS filed Critical Renault SAS
Application granted granted Critical
Publication of US3286698A publication Critical patent/US3286698A/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
    • F02B55/00—Internal-combustion aspects of rotary pistons; Outer members for co-operation with rotary pistons
    • F02B55/14—Shapes or constructions of combustion chambers
    • 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
    • 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
    • F02B2730/00—Internal-combustion engines with pistons rotating or oscillating with relation to the housing
    • F02B2730/01—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber
    • F02B2730/018—Internal-combustion engines with pistons rotating or oscillating with relation to the housing with one or more pistons in the form of a disk or rotor rotating with relation to the housing; with annular working chamber with piston rotating around an axis passing through the gravity centre, this piston or the housing rotating at the same time around an axis parallel to the first axis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This type of engine comprises (N+1) variable-volume working chambers bounded by the inner contour of the stator on the one hand and by the outer contour of the rotor on the other hand.
  • Associated with each working chamber is a combustion chamber receiving the inlet and exhaust valves as Well as the ignition spark plugs.
  • combustion head a self-contained unit to be termed hereinafter combustion head
  • the two lateral bearing plates of the rotary engine of this invention are braced independently of said combustion head by means of bracing members or distancepieces.
  • combustion heads can be machined on any conventional machine tools, and given equal conditions the rapidity and precision of the machining operations are greatly improved.
  • FIGURE 1 is a longitudinal section taken upon the line I-I of FIGURE 2, showing a water-cooled rotary engine constructed according to the teachings of this invention;
  • FIGURE 2 is a cross section taken upon the line II-II of FIG. 1;
  • FIGURE 3 is a longitudinal section taken upon the line III-III of FIGURE 4, showing an air-cooled rotary engine constructed according to the teachings of -this invention.
  • FIGURE 4 is a fragmentary cross-section taken upon the line IV-IV of FIGURE 3.
  • FIGURE l there is shown therein a rotary engine compri-sing live working chambers in the stator and four lobes in the rotor.
  • the reference numeral 1 designates the crankshaft, and 2 is the rotor revolving about the eccentric portion of said crankshaft.
  • This rotor is rotatably driven through a pair of toothed Vwheels 3, 4 solid with the rotor and a corresponding pair of internally-toothed lannuli 5, 6 mounted on the stator.
  • This stator consists of a pair of lateral bearing plates 7, 8 adequately braced by means of distance-pieces or bracing members 9, 10, 11, 12 and 13, all these component elements being assembled by means of bolts or studs 14.
  • the aforesaid distance-pieces or bracing members 9 to 13 are located at the corners or similar regions where the stator lobes are connected to each other.
  • This assembly consisting of the two bearing plates 7, 8 and of the bracing members 9 to 13 has roughly the shape of a pentagon having its sides finished by a complentary machining operating subsequent to the assembly.
  • combustion heads 16, 17, 18, 19 and 20 are secured by means of bolts 15.
  • combustion heads consist of machined castings formed with cavities and passages for the ignition spark plug and the inlet and exhaust valves, and also for circulating a cooling medium, other passages being provided therein for the assembly members, in this example screw bolts or studs.
  • These castings are formed with a suitably shaped concavity at their lower central portion which constitutes the combustion chamber proper, the inlet and exhaust valves and the spark plug projecting therein as in conventional cylinder-heads.
  • the lateral inner or lower surface of each combustion head is fiat and lits on the relevant flat face of said bracing members or distancepieces.
  • each combustion head is independent of the other combustion head-s of the engine, this feature 'being advantageous not only for production purposes but also for assembling and disassembling the engine.
  • the combustion heads of the rotary engine of this invention may be cooled by circulating either a suitable liquid coolant, for example water, -or atmospheric air blown by a fan.
  • a suitable liquid coolant for example water, -or atmospheric air blown by a fan.
  • FIGURE 2 A typical form of embodiment of a water-cooled engine according to this invention is illustrated in FIGURE 2 by Way of example.
  • the water penetrates into and flows through the combustion head 16, the rear bearing plate 8, and subsequently feeds in parallel the combustion heads 17, 18 and 20, before flowing into the front bearing plate 7 and through the combustion head 19 (through passages such as 29), the liquid escaping through the perennial 22.
  • each combustion head a pair of small passages or ducts deliver coo1ing water to the adjacent bracing members, the ow occuring through the front plate 7 as set forth hereinabove.
  • FIGURES 3 and 4 illustrate diagrammatically by way of example a typical air-cooled rotary engine constructed according to the teachings of this invention.
  • the combustion heads are cast with integral fins 23 through which air is blown by a fan 24, as shown by the arrows in FIGURE 3.
  • This cooling air also flows through the bracing members 9-13 by virtue of duties 25 formed in the front bearing plate 7, and escapes through orifices 26 formed in the rear bearing plate 8. Fins 27, 28 are also cast integrally with the bearing plates 7, 8 to improve the cooling effect.
  • Rotary engine comprises a rotor having N lobes revolving within a stator having (N+1) lobes to constitute (N+1) Working chambers having each a combustion chamber associated therewith, said stator consisting of two lateral bearing plates and of a member surrounding the rotor periphery, said engine being characterized in that said peripheral member consists of a plurality of separate elements half of which are bracing members and distance-pieces, and the remainder are combustion heads each formed with a combustion chamber and adapted to receive the valves and spark plug relevant to this chamber, as well as means for assembling these component elements.
  • Rotary engine according to claim 1 characterized in that said two lateral bearing plates of said stator are held at the proper relative spacing iby bracing members and distance-pieces located at their corner regions where the stator lobes are joined to each other, means being provided for assembling these component elements.
  • Rotary engine according to claim 1 characterized in that said bracing members and distance-pieces are formed with flat faces providing a polygonal contour and that the sides of the resulting polygonal assembly are adapted to be machined.
  • Rotary engine according to claim 1 characterized in that said combustion heads are mounted on said at faces by means of bolts and studs.
  • Rotary engine according to claim 1 characterized in that said bracing members and distance-pieces and said combustion heads as well as said lateral bearing plates, are provided with passages and cavities for the selective circulation of cooling water and blown air.
  • a rotary engine comprising a rotor having N lobes, a stator having (N+1) lobes to constitute (N+1) working chambers each having a combustion chamber associated therewith, said rotor being mounted to revolve within said stator, said stator comprising two lateral bearing plates and a peripheral member, said peripheral member comprising a plurality of alternately arranged spacing, bracing members and like number of combustion heads each of the latter being formed with a combustion chamber and being adapted to receive valves and a spark plug relevant to said chamber and means for assembling said stator.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
US335129A 1963-01-11 1964-01-02 Rotary engines Expired - Lifetime US3286698A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR921219A FR1353048A (fr) 1963-01-11 1963-01-11 Perfectionnements aux moteurs rotatifs

Publications (1)

Publication Number Publication Date
US3286698A true US3286698A (en) 1966-11-22

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ID=8794567

Family Applications (1)

Application Number Title Priority Date Filing Date
US335129A Expired - Lifetime US3286698A (en) 1963-01-11 1964-01-02 Rotary engines

Country Status (4)

Country Link
US (1) US3286698A (fr)
DE (1) DE1451816A1 (fr)
FR (1) FR1353048A (fr)
GB (1) GB1046071A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377995A (en) * 1965-03-26 1968-04-16 Renault Combustion chamber for rotary piston engine
US3539280A (en) * 1968-02-07 1970-11-10 Alfredo Ravera Endothermic rotary engine with shiftable blades
US4551083A (en) * 1984-05-21 1985-11-05 Trochoid Power Corporation Dual rotor gear assembly for trochoidal rotary device
US20070215094A1 (en) * 2006-03-06 2007-09-20 Sumiyuki Nagata Nagata cycle rotary engine
US20220307413A1 (en) * 2020-07-29 2022-09-29 Huazhong University Of Science And Technology Topological rotary engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1293623A (en) * 1917-03-14 1919-02-04 Charles E Sanborn Rotary gas-engine.
US1742706A (en) * 1925-07-06 1930-01-07 Century Rotary Motor Corp Internal-combustion rotary engine and method of operating it
FR850935A (fr) * 1938-09-06 1939-12-29 Perfectionnements aux machines à pistons rotatifs, et plus spécialement aux moteurs à explosion ou à combustion interne, ou pompes et compresseurs
US3200794A (en) * 1960-11-21 1965-08-17 Renault Rotary engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1293623A (en) * 1917-03-14 1919-02-04 Charles E Sanborn Rotary gas-engine.
US1742706A (en) * 1925-07-06 1930-01-07 Century Rotary Motor Corp Internal-combustion rotary engine and method of operating it
FR850935A (fr) * 1938-09-06 1939-12-29 Perfectionnements aux machines à pistons rotatifs, et plus spécialement aux moteurs à explosion ou à combustion interne, ou pompes et compresseurs
US3200794A (en) * 1960-11-21 1965-08-17 Renault Rotary engines

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3377995A (en) * 1965-03-26 1968-04-16 Renault Combustion chamber for rotary piston engine
US3539280A (en) * 1968-02-07 1970-11-10 Alfredo Ravera Endothermic rotary engine with shiftable blades
US4551083A (en) * 1984-05-21 1985-11-05 Trochoid Power Corporation Dual rotor gear assembly for trochoidal rotary device
US20070215094A1 (en) * 2006-03-06 2007-09-20 Sumiyuki Nagata Nagata cycle rotary engine
US7757658B2 (en) * 2006-03-06 2010-07-20 Sumiyuki Nagata Nagata cycle rotary engine
US20220307413A1 (en) * 2020-07-29 2022-09-29 Huazhong University Of Science And Technology Topological rotary engine
EP3974631A4 (fr) * 2020-07-29 2023-01-04 Huazhong University of Science and Technology Moteur rotatif topologique
US11713710B2 (en) * 2020-07-29 2023-08-01 Huazhong University Of Science And Technology Topological rotary engine

Also Published As

Publication number Publication date
DE1451816A1 (de) 1969-07-10
FR1353048A (fr) 1964-02-21
GB1046071A (en) 1966-10-19

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