US3193186A - Packings for rotary engines - Google Patents

Packings for rotary engines Download PDF

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Publication number
US3193186A
US3193186A US133631A US13363161A US3193186A US 3193186 A US3193186 A US 3193186A US 133631 A US133631 A US 133631A US 13363161 A US13363161 A US 13363161A US 3193186 A US3193186 A US 3193186A
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US
United States
Prior art keywords
stator
rotor
contour
lobes
strips
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
US133631A
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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 SA
Original Assignee
Renault SA
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Filing date
Publication date
Application filed by Renault SA filed Critical Renault SA
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Publication of US3193186A publication Critical patent/US3193186A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/10—Sealings for working fluids between radially and axially movable parts

Definitions

  • the rotary engine comprises a rotor having a contour corresponding to a shortened cpicycloid with two arcs, and a stator comprising three lobes separated by sealing strips constantly engaging the stator contour.
  • a stator comprising three lobes separated by sealing strips constantly engaging the stator contour.
  • FIGURE 1 is a diagrammatical section taken across the engine axis, the upper or front cover thereof being removed to show the rotor inside the stator;
  • FIGURE 2 is a view taken from the inner side of the upper or front cover to show the combustion chamber as well as the packing elements;
  • FIGURE 3 is a detail view showing on a larger scale the packing disposed between the working chambers;
  • FIGURE 4 is a fragmentary section taken upon the line IVIV of FIG. 3 to show the sealing between the stator and rotor;
  • FIGURE 5 is a fragmentary section taken upon the line V-V of FIG. 1;
  • FIGURE 6 is a view similar to FIG. 1 but showing an alternate embodiment of the packing
  • FIGURES 7 and 8 are views similar to FIGS. 3 and 4 which correspond to the embodiment of FIG. 6;
  • FIGURE 9 is a view similar to FIG. 2 but showing another form of embodiment of the polygonal sealing device
  • FIGURE 10 is a section taken upon the line XX of FIG. 9;
  • FIGURE 11 is a detail view showing on a larger scale the sealing device between two working chambers corresponding to the modified embodiment of FIG. 9, and
  • FIGURE 12 is a section taken upon the line XII-XII of FIG. 11.
  • a rotary engine of the aforesaid lobar type is sealed against gas and liquid leakages by pr-oviding fixed partioning means inserted in the stationary or non-rotating cases, that is, in the stator and in the side covers.
  • These partitioning means are constructed according to three main types:
  • Radial partitioning means disposed between the adjacent working chambers.
  • the partitioning means consist of strips or sections housed in suitable recesses formed in the stator at the junctions of adjacent lobes. These strips bear resiliently on the rotor along one generatrix.
  • members for interconnecting the strips are provided with a view to avoid leakages from one chamber to another externally of the polygon, or to permit the sealing relative engagement between the radial and lateral strips.
  • Circular lateral partitioning means disposed inside the polygonal partitioning strips which are also housed in the lateral flanges or covers and are intended more particularly to avoid oil leakages.
  • FIGS. 1 to -4 of the drawings the reference numeral 1 designates the stator, 2 is the rotor and 3 the radial sealing strips fitted in grooves 4 formed in the stator.
  • FIG. 2 illustrates the lateral cover 5 in which the combustion chambers 6 containing the inlet and exhaust valves 7, 8 and the spark plug 9 are disposed.
  • This cover as well as the opposite cover is forged with grooves 10 constituting together a polygon of which the vertices register with the strips 3, the sides of the polygon being either straight (FIG. 6) or curved ('FIG. 2), and their design such that they cannot be uncovered by the rotor while being located as close as possible to the combustion chambers.
  • these covers are also provided with circular grooves 12 receiving the oil sealing device which may be of any suitable type.
  • the radial strips 3 inserted in grooves 4 are urged by corrugated leaf springs 13 for resilient engagement with the suitable rotor contour so as to prevent the gases from communicating from one working chamber 14 to an adjacent chamber.
  • T 0 seal the chambers against gas leakages to and rom the central portion in which the eccentric is mounted, adequate sections 15 are inserted in the grooves 10 and urged by springs 16 (FIG. 5).
  • the lateral fluid-tightness in the engine is obtained by i is possible to have access to the strips 3 fOYlHSPECllOn.
  • V l Sealing device for a rotary engine of the lobar type comprising a rotor-having 2N lobes and a stator provided with a chamber having 2N +1 lobes and lateral covers closing said chamber, wherein the rotor contour 1 is an epicycloid and the stator-chamber contouran en-
  • FIGS. 6 to 8 illustrate a modified embodimentwherein the polygonal sealing strips 21 are straight and the f -lateral sealing deviceis disposed differently.
  • the strips '3 engage directly with their end faces the inner faces of the covers (FIG. 8) with theminimum operative" clearance, but they are engaged in turn by small laminae 22 resiliently pressed against the side faces of the rotor by springs 23 reacting against washers 24 housed in blind holes '25.
  • the ends of the sealingst'rips 21 engage'the laminae 22. 7 I V
  • the grooves 36 intersect one another as velope curve constituting a conjugate contour of the rotor epicycloid, the rotor being eccentrically mounted within said stator for rollinginterengagement of said stator and 'rotorl'lobes to form expansible and contractible fluid worldng chambers therebe'tween, said sealing device comprising lateral. and radial partitioning meanscarried only by, the stator and by fixed elements rigid with said stator,
  • said partitioning means consisting on the :one hand of radial strips'disposed. between the'working chambers and hou'sed in grooves formed at the junctions ,between ad- .means carried'by said grooves formed in said stator and. in the lateral covers of the engine is urged by spring Housed in the grooves 30 are strips 31 urged by corrugated spring' blades 35 disposed'in the bottom of the relevant grooves. These sealing strips 31 of polygonal configuration are assembled at their ends but a small 7 gap 37 is left therebetween for thermal expansion.
  • intersections of these polygonalgrooves are coincident with the radial grooves 4 of the stator and the corresponding strips 3 fitted therein constantly engage the epicyclic contour 38 of rotor 2- throughout their length with a surface having an adequate contour.
  • FIGURE 12 illustrates the assembly of sealing strips as consistent withthe conditions of operation of the engine. 1
  • the reference numeral 1- designates'the stator, 2 is the 1 rotor. and 5 the lateral cover, 3 is one of the radial sealing strips housed in the stator 1 and engaging the epi-' cyclic contour 38 of the rotor. I a
  • Each radial strip 3 is mounted in'its groove with a moderate clearance 39' at either end. Thus, a certain leakage 49 is left between'the' adjacent working chambers.
  • the lateral strips 31' constantly engage one lateral face 41 of the rotor.
  • said partitioning means comprises further strip-like elements disposed in circular grooves formed in the lateral covers of the v stator chamber said grooves surrounding the shaft carry ing the rotor and extending'into said covers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sealing Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Rotary Pumps (AREA)
US133631A 1960-09-17 1961-08-24 Packings for rotary engines Expired - Lifetime US3193186A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR838869A FR1274666A (fr) 1960-09-17 1960-09-17 Système d'étanchéité à éléments fixes pour moteur rotatif

Publications (1)

Publication Number Publication Date
US3193186A true US3193186A (en) 1965-07-06

Family

ID=8739220

Family Applications (1)

Application Number Title Priority Date Filing Date
US133631A Expired - Lifetime US3193186A (en) 1960-09-17 1961-08-24 Packings for rotary engines

Country Status (6)

Country Link
US (1) US3193186A (OSRAM)
DE (1) DE1426046A1 (OSRAM)
ES (1) ES270532A1 (OSRAM)
FR (1) FR1274666A (OSRAM)
GB (1) GB997419A (OSRAM)
SE (1) SE220026C1 (OSRAM)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282496A (en) * 1962-11-08 1966-11-01 Radziwill Maciej Sealing means for a power driven machine with a rotary piston
US3343526A (en) * 1963-03-21 1967-09-26 Renault Lubrication of the radial segments of rotary engines
US3366317A (en) * 1966-04-30 1968-01-30 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
US3369739A (en) * 1966-04-30 1968-02-20 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
US3460483A (en) * 1967-09-15 1969-08-12 Lucas Industries Ltd Port plates for hydraulic reciprocating pumps and motors
US3690792A (en) * 1969-12-15 1972-09-12 Danfoss As Toothed wheel machine
US3797974A (en) * 1971-06-30 1974-03-19 Dornier System Gmbh Packing strip arrangement for rotary piston engines
US3867911A (en) * 1973-02-08 1975-02-25 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine
US3881848A (en) * 1971-08-04 1975-05-06 Dornier System Gmbh Packing strip arrangement for highly superheated gases in engines and other working machines
US3883276A (en) * 1972-10-20 1975-05-13 Volkswagenwerk Ag Discharge arrangement for the exhaust gas from the work areas of a rotary piston combustion engine
US3914075A (en) * 1973-02-12 1975-10-21 Andre Brulfert Sliding partition rotary engine with rectilinear seals
US3954356A (en) * 1974-11-01 1976-05-04 General Motors Corporation Rotary engine rotor housing having coolant cooled bridged exhaust port
US4012181A (en) * 1973-02-12 1977-03-15 Andre Brulfert Engine with rotor, of new type
US4089305A (en) * 1975-04-03 1978-05-16 Gregg Oscar P Rotary internal combustion engine
US4191515A (en) * 1977-04-06 1980-03-04 Ettridge John P Sealing system for a rotary machine
US4233004A (en) * 1978-03-06 1980-11-11 Volkswagenwerk Aktiengesellschaft Seal for an eccentric-rotor machine
US4728270A (en) * 1986-10-20 1988-03-01 Trochoid Power Corporation Apparatus and method for replacing apex seals in a rotary device
US4735560A (en) * 1987-02-25 1988-04-05 Larry Wydra Seal assembly for a rotary device
US6530357B1 (en) * 1998-11-18 2003-03-11 Viktor Prokoflevich Yaroshenko Rotary internal combustion engine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215403A (en) * 1988-03-10 1989-09-20 Hydrovane Compressor Rotary compressors
CA2067355A1 (en) * 1989-10-04 1991-04-05 Helmuth R. Uebel Rotary piston machine
BR9007710A (pt) * 1989-10-04 1992-07-21 Archimedes Associates Inc Maquina de pistao rotativo
CN103912371A (zh) * 2013-01-09 2014-07-09 优华劳斯汽车系统（上海）有限公司 一种旋转活塞式内燃机的排气结构

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US647717A (en) * 1897-12-17 1900-04-17 Guilford S Wood Rotary engine.
DE1057613B (de) * 1957-11-18 1959-05-21 Nsu Werke Ag Innenachsige Drehkolbenmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US647717A (en) * 1897-12-17 1900-04-17 Guilford S Wood Rotary engine.
DE1057613B (de) * 1957-11-18 1959-05-21 Nsu Werke Ag Innenachsige Drehkolbenmaschine

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3282496A (en) * 1962-11-08 1966-11-01 Radziwill Maciej Sealing means for a power driven machine with a rotary piston
US3343526A (en) * 1963-03-21 1967-09-26 Renault Lubrication of the radial segments of rotary engines
US3366317A (en) * 1966-04-30 1968-01-30 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
US3369739A (en) * 1966-04-30 1968-02-20 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine, especially circular piston internal combustion engine
US3460483A (en) * 1967-09-15 1969-08-12 Lucas Industries Ltd Port plates for hydraulic reciprocating pumps and motors
US3690792A (en) * 1969-12-15 1972-09-12 Danfoss As Toothed wheel machine
US3797974A (en) * 1971-06-30 1974-03-19 Dornier System Gmbh Packing strip arrangement for rotary piston engines
US3881848A (en) * 1971-08-04 1975-05-06 Dornier System Gmbh Packing strip arrangement for highly superheated gases in engines and other working machines
US3883276A (en) * 1972-10-20 1975-05-13 Volkswagenwerk Ag Discharge arrangement for the exhaust gas from the work areas of a rotary piston combustion engine
US3867911A (en) * 1973-02-08 1975-02-25 Kloeckner Humboldt Deutz Ag Rotary piston internal combustion engine
US3914075A (en) * 1973-02-12 1975-10-21 Andre Brulfert Sliding partition rotary engine with rectilinear seals
US4012181A (en) * 1973-02-12 1977-03-15 Andre Brulfert Engine with rotor, of new type
US3954356A (en) * 1974-11-01 1976-05-04 General Motors Corporation Rotary engine rotor housing having coolant cooled bridged exhaust port
US4089305A (en) * 1975-04-03 1978-05-16 Gregg Oscar P Rotary internal combustion engine
US4191515A (en) * 1977-04-06 1980-03-04 Ettridge John P Sealing system for a rotary machine
US4233004A (en) * 1978-03-06 1980-11-11 Volkswagenwerk Aktiengesellschaft Seal for an eccentric-rotor machine
US4728270A (en) * 1986-10-20 1988-03-01 Trochoid Power Corporation Apparatus and method for replacing apex seals in a rotary device
US4735560A (en) * 1987-02-25 1988-04-05 Larry Wydra Seal assembly for a rotary device
US6530357B1 (en) * 1998-11-18 2003-03-11 Viktor Prokoflevich Yaroshenko Rotary internal combustion engine

Also Published As

Publication number Publication date
ES270532A1 (es) 1961-12-01
FR1274666A (fr) 1961-10-27
SE220026C1 (OSRAM) 1968-04-09
DE1426046A1 (de) 1968-12-12
GB997419A (en) 1965-07-07

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