EP0289644A1 - Rotary internal-combustion turbine - Google Patents

Rotary internal-combustion turbine Download PDF

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Publication number
EP0289644A1
EP0289644A1 EP87106734A EP87106734A EP0289644A1 EP 0289644 A1 EP0289644 A1 EP 0289644A1 EP 87106734 A EP87106734 A EP 87106734A EP 87106734 A EP87106734 A EP 87106734A EP 0289644 A1 EP0289644 A1 EP 0289644A1
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EP
European Patent Office
Prior art keywords
rotating body
internal combustion
webs
interior
turbine
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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Withdrawn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
EP87106734A
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German (de)
French (fr)
Inventor
Werner Arendt
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Unipex AG
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Unipex AG
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Priority to EP87106734A priority Critical patent/EP0289644A1/en
Publication of EP0289644A1 publication Critical patent/EP0289644A1/en
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    • 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
    • F01C1/344—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 inner member
    • F01C1/3446—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 inner member the inner and outer member being in contact along more than one line or surface
    • 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
    • F01C11/00—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
    • F01C11/002—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle
    • F01C11/004—Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle and of complementary function, e.g. internal combustion engine with supercharger

Definitions

  • the invention relates to an internal combustion engine rotating body turbine with a rotating body which is fitted with radially displaceable webs and which is rotatably mounted in an interior of a turbine housing, the webs being supported on the periphery of the interior and forming variable volume rotating combustion chambers between them, the turbine housing and the rotating body.
  • the invention has for its object to provide an internal combustion engine without a crankshaft, which consists of only a few and uncomplicated items.
  • an internal combustion engine turbine of the type mentioned in accordance with the invention in that in the periphery of the interior there is an inlet opening for a fuel / air mixture and an exhaust gas outlet opening at least one circumferential chamber apart and the interior perpendicular an ellipse to the axis of the rotating body has like cross-section, such that the circumferential chamber located in front of the inlet opening has a larger volume than the chamber located in front of the outlet opening.
  • the interior of the turbine housing can be closed on both sides by covers in which the bearing points for the rotating body mounted centrally in the turbine housing and additionally guide curves are formed, into which lateral projections of the radially displaceable webs project for their positive guidance.
  • bearing parts can be flanged to the end faces of the rotating body, in each of which at least one sealing ring which interacts with the rotating body is arranged.
  • the rotating body shaft directly forms the output shaft of the turbine, which overall has a simple structure and, with the exception of the cross-sectional shape of the interior of the turbine housing, consists of simple and easy-to-manufacture parts.
  • Each radially displaceable web can expediently rest against the periphery of the interior of the turbine housing via a slide strip which is spring-loaded in its free end.
  • the circular-cylindrical rotating body can expediently be provided on its shell side with recesses, each of which forms part of the circumferential combustion chambers and which have an asymmetrical cross section in the sectional planes running transverse to the rotating body axis, which favors the force effect of the combustion gases in the predetermined direction of rotation of the rotating body.
  • the recesses can expediently run more flatly into the rotating body lateral surface at their front edge in the circumferential direction than at their rear edge.
  • the internal combustion engine turbine designed according to the invention has a very favorable power-to-weight ratio and can advantageously support its smooth running have a multiple of two radially displaceable webs on the circumference of the rotating body, two webs always being diametrically opposed.
  • Each revolving chamber can, for example, pass through four work cycle areas per revolution.
  • the internal combustion rotary turbine is easily adaptable to special conditions with regard to its output and dimensions and can also be combined with several other rotary turbine turbines of the same type, for example arranged coaxially one behind the other and working on a common shaft.
  • the turbine can also be operated with different liquid or gaseous fuels.
  • FIG. 1 and 2 show the one end face 11 of a circular-cylindrical turbine housing 10, which has an interior 12 with an elliptical cross section that is continuous from the front end face 11 to a rear end face.
  • the turbine housing 10 has a stepped opening 13 for inserting a spark plug 14, a slot-like inlet opening 15 for a fuel / air mixture and a slot-like outlet opening 16 for the exhaust gases.
  • threaded bores 17 are formed for fastening the housing cover 18, one of which is shown in FIG. 4.
  • a circular cylindrical rotating body 19 is centrally supported, which is provided with six radial slots 20, which are evenly distributed over its circumference and extend over its entire length, in each of which a web 21.1-21.6 is mounted in a radially displaceable manner.
  • Each web 21.1 -21.6 ends in a slide bar 22, which is under the pretension of a spring bar 23, which is only schematically indicated in FIG. 1, and is thus always held in tight contact against the wall 25 of the interior 12.
  • the area of the interior 12 which is left free between the rotating body 19 and the turbine housing 10 is divided into six by the webs 21.1-21.6 revolving individual chambers divided, the volume changes during the rotation of the rotating body 19 in the direction of the arrow 24.
  • a chamber 12.6 filled with the fuel / air mixture through the inlet opening 15, a chamber 12.4 in communication with the exhaust gas outlet opening 16 and the chamber 12.2 located in the area of the spark plug 14 are designated.
  • the cross section of the interior 12 is elliptical, that is to say not exactly elliptical, in such a way that the chamber 12.6 connected to the inlet opening 15 in FIG. 1 has a larger volume than the chamber 12.4 connected to the exhaust gas outlet opening 16.
  • the chamber 12.6 greatly reduces its volume on the way to the spark plug 14, as a result of which the fuel / air mixture introduced is highly compressed.
  • the reduction in volume is so great that the main volume is practically formed by a recess 26 which is formed in the lateral surface 27 of the rotating body 19 in the region of each chamber, that is to say in each region between two webs 21, and which according to the sectional illustration in FIG. 1 all are formed so that they run flat at their front edge in the circumferential direction into the lateral surface 27 of the rotating body 19 than at their rear edge.
  • the central mounting of the rotating body 19 in the interior 12 is carried out by means of separate end walls for the rotating body 19 forming bearing parts 31, each with an output shaft journal 29.1 in a concentric bearing opening 28 of a cover 18 and on the inside with a plug coupling part 29.2 in a concentric coupling opening 30 of the rotating body 19 intervene.
  • a sealing ring 32 is mounted coaxially by means of screws 35 on the rotating body 19, which abuts against the end face of the rotating body 19.
  • radially slot-like through openings 36 are also formed, through which lateral projections 34 of the webs 21 protrude and which end in a positive control curve 33 (FIG. 2) formed in the cover 18, which force-control all the webs 21.1-21.6 effected during the rotation of the rotating body 19.
  • the radially displaceable webs 21.1-21.6, or at least their slide strips 22, can consist of ceramic materials or can be coated with ceramic materials.
  • the rotating body turbine consists of a few individual parts which can largely be produced as rotating parts and which can be easily assembled, the rotating parts being secured in their position by the two housing covers 18.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Supercharger (AREA)

Abstract

The rotary internal-combustion turbine has a circular-cylindrical rotating body (19) in an elliptical inner chamber (12) of a turbine housing (10), which rotating body (19), together with the webs (21.1 - 21.6), which are supported in a radially movable manner therein and slide in a sealing manner by means of sliding strips (22) on the wall (25) of the inner chamber (12), form rotating chambers (12.1 - 12.6) having a varying volume. These chambers are enlarged by means of recesses (26) which are constructed in the rotating body jacket surface (27) and have an asymmetrical cross-section. The elliptical cross-section of the inner chamber (12) is held such that a chamber (12.6) on the fuel inlet side has a greater volume than a chamber (12.4) connected to the exhaust gas outlet opening (16). <IMAGE>

Description

Die Erfindung betrifft eine Brennkraft-Drehkörperturbine mit einem mit radialverschiebbaren Stegen besetzten Dreh­körper, der in einem Innenraum eines Turbinengehäuses drehbar gelagert ist, wobei die Stege sich an der Peri­pherie des Innenraumes abstützen und zwischen sich, dem Turbinengehäuse und dem Drehkörper umlaufende Brennkammern veränderlichen Volumens bilden.The invention relates to an internal combustion engine rotating body turbine with a rotating body which is fitted with radially displaceable webs and which is rotatably mounted in an interior of a turbine housing, the webs being supported on the periphery of the interior and forming variable volume rotating combustion chambers between them, the turbine housing and the rotating body.

Der Erfindung liegt die Aufgabe zugrunde, einen Brenn­kraftmotor ohne Kurbelwelle zu schaffen, der nur aus weni­gen und unkomplizierten Einzelteilen besteht.The invention has for its object to provide an internal combustion engine without a crankshaft, which consists of only a few and uncomplicated items.

Die gestellte Aufgabe wird mit einer Brennkraft-Drehkör­perturbine der eingangs genannten Art erfindungsgemäß dadurch gelöst, daß sich in der Peripherie des Innenraums eine Eintrittsöffnung für ein Brennstoff/Luftgemisch und eine Abgas-Austrittsöffnung um die Breite mindestens einer umlaufenden Kammer voneinander entfernt befinden und der Innenraum senkrecht zur Drehkörperachse einen ellipsen­ artigen Querschnitt aufweist, dergestalt, daß die sich vor der Eintrittsöffnung befindende umlaufende Kammer ein größeres Volumen aufweist, als die sich vor der Austritts­öffnung befindende Kammer.The object is achieved with an internal combustion engine turbine of the type mentioned in accordance with the invention in that in the periphery of the interior there is an inlet opening for a fuel / air mixture and an exhaust gas outlet opening at least one circumferential chamber apart and the interior perpendicular an ellipse to the axis of the rotating body has like cross-section, such that the circumferential chamber located in front of the inlet opening has a larger volume than the chamber located in front of the outlet opening.

Es sind zwar Brennkraftmotoren aus der Literatur bekannt­geworden, welche die eingangs genannten Merkmale aufweisen und bei denen der Drehkörper exzentrisch in einem kreis­förmigen Innenraum eines Motorgehäuses angeordnet ist. Eine solche exzentrische Anordnung des Drehkörpers hat aber Nachteile, die den Wirkungsgrad eines solchen Motors von vornherein begrenzen; insbesondere den Nachteil, daß die umlaufenden Kammern veränderlichen Volumens nur un­vollständig von den sich bildenden Abgasen befreit werden können. Diese Nachteile werden durch die ellipsenartige Querschnittsform des Innenraumes einer erfindungsgemäß ausgebildeten Brennkraft-Drehkörperturbine so stark redu­ziert, daß sie den Wirkungsgrad der Brennkraft-Drehkörper­turbine nicht mehr entscheidend beeinflussen. Dabei ist wesentlich, daß der Querschnitt des Innenraumes nicht genau einer Ellipse entspricht. Der Drehkörper der Brenn­kraft-Drehkörperturbine bildet einen rotierenden Verdich­ter, der bereits bei kleinen Drehzahlen ein hohes Dreh­moment erzeugt. Eine Steuerung seiner Verbrennungsgemisch-­Eintrittsöffnung und seiner Abgas-Austrittsöffnung ist nicht erforderlich. Diese Öffnungen können als einfache Steuerschlitze ausgebildet sein.Internal combustion engines have indeed become known from the literature which have the features mentioned at the outset and in which the rotating body is arranged eccentrically in a circular interior of a motor housing. However, such an eccentric arrangement of the rotating body has disadvantages which limit the efficiency of such a motor from the outset; in particular the disadvantage that the rotating chambers of variable volume can only be freed incompletely from the exhaust gases which form. These disadvantages are reduced so much by the elliptical cross-sectional shape of the interior of an internal combustion engine turbine designed according to the invention that they no longer have a decisive influence on the efficiency of the internal combustion engine turbine. It is essential that the cross section of the interior does not exactly correspond to an ellipse. The rotating body of the internal combustion rotating turbine forms a rotating compressor that generates high torque even at low speeds. It is not necessary to control its combustion mixture inlet opening and its exhaust gas outlet opening. These openings can be designed as simple control slots.

Vorteilhafterweise kann der Innenraum des Turbinengehäuses beidseitig durch Deckel verschließbar sein, in welchen die Lagerstellen für den zentral im Turbinengehäuse gelagerten Drehkörper und zusätzlich Führungskurven ausgebildet sind, in welche seitliche Vorsprünge der radialverschiebbaren Stege zu deren Zwangsführung ragen. Zweckmäßig können an den Stirnseiten des Drehkörpers koaxial Lagerteile ange­flanscht sein, in denen jeweils mindestens ein mit dem Drehkörper zusammenwirkender Abdichtring angeordnet ist. Die Drehkörperwelle bildet direkt die Abtriebswelle der Turbine, die insgesamt einen einfachen Aufbau hat und mit Ausnahme der Querschnittsform des Innenraumes des Turbi­nengehäuses aus einfachen und leicht zu fertigenden Teilen besteht.Advantageously, the interior of the turbine housing can be closed on both sides by covers in which the bearing points for the rotating body mounted centrally in the turbine housing and additionally guide curves are formed, into which lateral projections of the radially displaceable webs project for their positive guidance. Appropriately, bearing parts can be flanged to the end faces of the rotating body, in each of which at least one sealing ring which interacts with the rotating body is arranged. The rotating body shaft directly forms the output shaft of the turbine, which overall has a simple structure and, with the exception of the cross-sectional shape of the interior of the turbine housing, consists of simple and easy-to-manufacture parts.

Die an den Drehkörper angeflanschten Lagerteile mit dem Dichtring ergeben eine gute Abdichtung der Kammern an den seitlichen Enden der im Drehkörper gelagerten Stege. Jeder radialverschiebbare Steg kann zweckmäßig über eine in sei­nem freien Ende federbelastet gelagerte Gleitleiste an der Peripherie des Innenraums des Turbinengehäuses anliegen.The bearing parts flanged to the rotating body with the sealing ring result in a good sealing of the chambers at the lateral ends of the webs supported in the rotating body. Each radially displaceable web can expediently rest against the periphery of the interior of the turbine housing via a slide strip which is spring-loaded in its free end.

Der kreiszylindrische Drehkörper kann auf seiner Mantel­seite zweckmäßig mit Ausnehmungen versehen sein, die je­weils einen Teil der umlaufenden Brennkammern bilden und die in quer zur Drehkörperachse verlaufenden Schnittebenen einen unsymmetrischen Querschnitt haben, der die Kraft­wirkung der Verbrennungsgase in die vorgegebene Drehrich­tung des Drehkörpers begünstigt. Hierbei können die Aus­nehmungen zweckmäßig an ihrem in Umlaufrichtung vorderen Rand flacher in die Drehkörper-Mantelfläche auslaufen als an ihrem hinteren Rand.The circular-cylindrical rotating body can expediently be provided on its shell side with recesses, each of which forms part of the circumferential combustion chambers and which have an asymmetrical cross section in the sectional planes running transverse to the rotating body axis, which favors the force effect of the combustion gases in the predetermined direction of rotation of the rotating body. In this case, the recesses can expediently run more flatly into the rotating body lateral surface at their front edge in the circumferential direction than at their rear edge.

Die erfindungsgemäß ausgebildete Brennkraft-Drehkörper­turbine hat ein sehr günstiges Leistungsgewicht und kann zur Unterstützung ihres ruhigen Laufes vorteilhafterweise am Umfang des Drehkörpers ein Mehrfaches von zwei radial­verschiebbaren Stegen aufweisen, wobei sich immer zwei Stege diametral gegenüberliegen. Dabei kann jede umlau­fende Kammer pro Umdrehung beispielsweise vier Arbeits­taktbereiche durchlaufen. Die Brennkraft-Drehkörperturbine ist hinsichtlich ihrer Leistung und ihren Abmessungen leicht an besondere Verhältnisse anpaßbar und läßt sich auch mit mehreren anderen, beispielsweise koaxial hinter­einander angeordneten und auf einer gemeinsamen Welle arbeitenden Drehkörperturbinen gleicher Art kombinieren. Auch läßt sich die Turbine mit unterschiedlichen flüssigen oder gasförmigen Brennstoffen betreiben.The internal combustion engine turbine designed according to the invention has a very favorable power-to-weight ratio and can advantageously support its smooth running have a multiple of two radially displaceable webs on the circumference of the rotating body, two webs always being diametrically opposed. Each revolving chamber can, for example, pass through four work cycle areas per revolution. The internal combustion rotary turbine is easily adaptable to special conditions with regard to its output and dimensions and can also be combined with several other rotary turbine turbines of the same type, for example arranged coaxially one behind the other and working on a common shaft. The turbine can also be operated with different liquid or gaseous fuels.

Nachfolgend wird ein Ausführungsbeispiel einer erfindungs­gemäß ausgebildeten Brennkraft-Drehkörperturbine anhand der beiliegenden schematischen Zeichnung näher erläutert.An exemplary embodiment of an internal combustion engine turbine designed according to the invention is explained in more detail below with reference to the attached schematic drawing.

Im einzelnen zeigen:

  • Fig. 1 eine Draufsicht auf die Turbine in Axialrichtung bei abgenommenem Deckel des Turbinengehäuses, teilweise im Schnitt;
  • Fig. 2 eine der Fig. 1 entsprechende Ansicht bei entferntem Drehkörper;
  • Fig. 3 eine Darstellung des Drehkörpers und der zugehörigen Drehkörper-Lagerteile in schematischer Explosionsdarstel­lung;
  • Fig. 4 einen schematischen Querschnitt durch einen Gehäusedeckel, den Drehkörper une einen der Lagerteile der Brenn­kraft-Drehkörperturbine.
In detail show:
  • Figure 1 is a plan view of the turbine in the axial direction with the cover of the turbine housing removed, partially in section.
  • FIG. 2 shows a view corresponding to FIG. 1 with the rotating body removed;
  • Figure 3 is a schematic exploded view of the rotating body and the associated rotating body bearing parts.
  • Fig. 4 shows a schematic cross section through a housing cover, the rotary body and one of the bearing parts of the internal combustion engine rotary turbine.

Die Fig. 1 und 2 zeigen die eine Stirnseite 11 eines kreiszylindrischen Turbinengehäuses 10, das einen von der vorderen Stirnseite 11 zu einer hinteren Stirnseite durch­gehenden Innenraum 12 mit einem ellipsenartigen Quer­schnitt aufweist. Das Turbinengehäuse 10 weist in seinem Mantel eine gestufte Öffnung 13 zum Einsetzen einer Zünd­kerze 14, eine schlitzartige Eintrittsöffnung 15 für ein Brennstoff/Luftgemisch und eine schlitzartige Austritts­öffnung 16 für die Abgase auf. Am Rande der beiden paral­lel zueinander verlaufenden Stirnseiten 11 sind Gewinde­bohrungen 17 zum Befestigen der Gehäusedeckel 18 ausgebil­det, von denen einer in Fig. 4 dargestellt ist.1 and 2 show the one end face 11 of a circular-cylindrical turbine housing 10, which has an interior 12 with an elliptical cross section that is continuous from the front end face 11 to a rear end face. The turbine housing 10 has a stepped opening 13 for inserting a spark plug 14, a slot-like inlet opening 15 for a fuel / air mixture and a slot-like outlet opening 16 for the exhaust gases. At the edge of the two mutually parallel end faces 11, threaded bores 17 are formed for fastening the housing cover 18, one of which is shown in FIG. 4.

Im Innenraum 12 des Turbinengehäuses 10 ist ein kreis­zylindrischer Drehkörper 19 zentral gelagert, der mit sechs gleichmäßig über seinen Umfang verteilten und sich über seine ganze Länge erstreckenden Radialschlitzen 20 versehen ist, in denen Jeweils ein Steg 21.1 - 21.6 radialverschiebbar gelagert ist. Jeder Steg 21.1 -21.6 endet in einer Gleitleiste 22, die unter der Vorspannung einer in Fig. 1 nur schematisch angedeuteten Federleiste 23 steht und dadurch stets in dichter Anlage gegen die Wandung 25 des Innenraumes 12 gehalten ist.In the interior 12 of the turbine housing 10, a circular cylindrical rotating body 19 is centrally supported, which is provided with six radial slots 20, which are evenly distributed over its circumference and extend over its entire length, in each of which a web 21.1-21.6 is mounted in a radially displaceable manner. Each web 21.1 -21.6 ends in a slide bar 22, which is under the pretension of a spring bar 23, which is only schematically indicated in FIG. 1, and is thus always held in tight contact against the wall 25 of the interior 12.

Wie aus Fig. 1 ersichtlich ist, ist der zwischen dem Dreh­körper 19 und dem Turbinengehäuse 10 freibleibende Bereich des Innenraumes 12 durch die Stege 21.1 - 21.6 in sechs umlaufende Einzelkammern unterteilt, deren Volumen sich während des in Richtung des eingetragenen Pfeiles 24 er­folgenden Umlaufes des Drehkörpers 19 verändert. In Fig. 1 sind eine durch die Eintrittsöffnung 15 mit dem Brenn­stoff/Luftgemisch gefüllte Kammer 12.6, eine mit der Abgas-Austrittsöffnung 16 in Verbildung stehende Kammer 12.4 und die im Bereich der Zündkerze 14 befindliche Kam­mer 12.2 bezeichnet. Der Querschnitt des Innenraumes 12 ist ellipsenartig, also nicht genau elliptisch, derge­stalt, daß die in Fig. 1 mit der Eintrittsöffnung 15 in Verbindung stehende Kammer 12.6 ein größeres Volumen auf­weist als die mit der Abgas-Austrittsöffnung 16 in Verbin­dung stehende Kammer 12.4. Die Kammer 12.6 vermindert ihr Volumen auf dem Weg zur Zündkerze 14 sehr stark, wodurch eine hohe Verdichtung des eingebrachten Brennstoff/Luftge­misches erfolgt. Die Volumenverringerung ist so stark, daß das Hauptvolumen praktisch durch eine Ausnehmung 26 gebil­det ist, die in der Mantelfläche 27 des Drehkörpers 19 im Bereich jeder Kammer, also in jedem Bereich zwischen zwei Stegen 21, ausgebildet ist und die gemäß der Schnittdar­stellung in Fig. 1 alle so gebildet sind, daß sie an ihrem in Umlaufrichtung vorderen Rand flacher in die Mantelflä­che 27 des Drehkörpers 19 auslaufen als an ihrem hinteren Rand.As can be seen from FIG. 1, the area of the interior 12 which is left free between the rotating body 19 and the turbine housing 10 is divided into six by the webs 21.1-21.6 revolving individual chambers divided, the volume changes during the rotation of the rotating body 19 in the direction of the arrow 24. In FIG. 1, a chamber 12.6 filled with the fuel / air mixture through the inlet opening 15, a chamber 12.4 in communication with the exhaust gas outlet opening 16 and the chamber 12.2 located in the area of the spark plug 14 are designated. The cross section of the interior 12 is elliptical, that is to say not exactly elliptical, in such a way that the chamber 12.6 connected to the inlet opening 15 in FIG. 1 has a larger volume than the chamber 12.4 connected to the exhaust gas outlet opening 16. The chamber 12.6 greatly reduces its volume on the way to the spark plug 14, as a result of which the fuel / air mixture introduced is highly compressed. The reduction in volume is so great that the main volume is practically formed by a recess 26 which is formed in the lateral surface 27 of the rotating body 19 in the region of each chamber, that is to say in each region between two webs 21, and which according to the sectional illustration in FIG. 1 all are formed so that they run flat at their front edge in the circumferential direction into the lateral surface 27 of the rotating body 19 than at their rear edge.

Die zentrale Lagerung des Drehkörpers 19 im Innenraum 12 erfolgt mittels gesonderter, stirnseitliche Abdeckwandun­gen für den Drehkörper 19 bildender Lagerteile 31, die mit einem Abtriebswellenzapfen 29.1 jeweils in eine konzentri­sche Lageröffnung 28 eines Deckels 18 und innenseitig mit einem Steckkupplungsteil 29.2 in eine konzentrische Kupp­lungsöffnung 30 des Drehkörpers 19 eingreifen. In den koaxial mittels Schrauben 35 am Drehkörper 19 befestigten Lagerteilen 31 ist jeweils ein Dichtungsring 32 gelagert, der sich gegen die Stirnseite des Drehkörpers 19 anlegt. In den Lagerteilen 31 sind gemäß Fig. 3 außerdem radial schlitzartige Durchgangsöffnungen 36 ausgebildet, durch welche seitliche Vorsprünge 34 der Stege 21 hindurchragen und welche in einer im Deckel 18 ausgebildeten Zwangs­steuerkurve 33 (Fig. 2) enden, die eine Zwangssteuerung aller Stege 21.1 - 21.6 während des Umlaufes des Drehkör­pers 19 bewirkt.The central mounting of the rotating body 19 in the interior 12 is carried out by means of separate end walls for the rotating body 19 forming bearing parts 31, each with an output shaft journal 29.1 in a concentric bearing opening 28 of a cover 18 and on the inside with a plug coupling part 29.2 in a concentric coupling opening 30 of the rotating body 19 intervene. In the In each case, a sealing ring 32 is mounted coaxially by means of screws 35 on the rotating body 19, which abuts against the end face of the rotating body 19. In the bearing parts 31, according to FIG. 3, radially slot-like through openings 36 are also formed, through which lateral projections 34 of the webs 21 protrude and which end in a positive control curve 33 (FIG. 2) formed in the cover 18, which force-control all the webs 21.1-21.6 effected during the rotation of the rotating body 19.

Die radialverschiebbaren Stege 21.1 - 21.6, mindestens aber ihre Gleitleisten 22, können aus Keramikwerkstoffen bestehen oder mit keramischen Werkstoffen beschichtet sein.The radially displaceable webs 21.1-21.6, or at least their slide strips 22, can consist of ceramic materials or can be coated with ceramic materials.

Wie die Zeichnungen zeigen, besteht die Drehkörperturbine aus wenigen, weitgehend als Drehteile herstellbaren Ein­zelteilen, die sich leicht zusammensetzen lassen, wobei die umlaufenden Teile durch die beiden Gehäusedeckel 18 in ihrer Lage gesichert sind.As the drawings show, the rotating body turbine consists of a few individual parts which can largely be produced as rotating parts and which can be easily assembled, the rotating parts being secured in their position by the two housing covers 18.

Claims (8)

1. Brennkraft-Drehkörperturbine mit einem mit radialver­schiebbaren Stegen besetzten Drehkörper, der in einem Innenraum eines Turbinengehäuses drehbar gelagert ist, wobei die Stege sich an der Wandung des Innenraumes abstützen und zwischen sich, dem Turbinengehäuse und dem Drehkörper umlaufende Kammern veränderlichen Volu­mens bilden, dadurch gekennzeichnet, daß sich in der Peripherie des Innenraumes (12) eine Eintrittsöffnung (15) für ein Brennstoff/Luftgemisch und eine Abgas-­Austrittsöffnung (16) um die Breite mindestens einer umlaufenden Kammer (12.1 - 12.6) voneinander entfernt befinden und der Innenraum (12) senkrecht zur Achse des Drehkörpers (19) einen ellipsenartigen Querschnitt aufweist, dergestalt, daß die sich vor der Eintritts­öffnung (15) befindende umlaufende Kammer (12.6) ein größeres Volumen aufweist als die sich vor der Aus­trittsöffnung (16) befindende Kammer (12.4).1. Internal combustion engine turbine with a rotary body with radially displaceable webs, which is rotatably mounted in an interior of a turbine housing, the webs being supported on the wall of the interior and forming circumferential chambers of variable volume between them, the turbine housing and the rotating body that in the periphery of the interior (12) there is an inlet opening (15) for a fuel / air mixture and an exhaust gas outlet opening (16) by at least one circumferential chamber (12.1 - 12.6) and the interior (12) perpendicular to the axis of the rotating body (19) has an elliptical cross-section such that the circumferential chamber (12.6) located in front of the inlet opening (15) has a larger volume than the chamber (12.4) located in front of the outlet opening (16). 2. Brennkraft-Drehkörperturbine nach Anspruch 1, dadurch gekennzeichnet, daß der Innenraum (12) des Turbinenge­häuses (10) beidseitig durch Deckel (18) verschließbar ist, in welchen die Lagerstellen für den zentral im Turbinengehäuse (10) gelagerten Drehkörper (19) und zu­sätzlich Führungskurven (33) ausgebildet sind, in wel­che seitliche Vorsprünge (34) der radialverschiebbaren Stege (21.1 - 21.6) zu deren Zwangsführung ragen.2. Internal combustion rotary turbine according to claim 1, characterized in that the interior (12) of the turbine housing (10) can be closed on both sides by cover (18), in which the bearing points for the rotating body (19) mounted centrally in the turbine housing (10) and In addition, guide curves (33) are formed, into which lateral projections (34) of the radially displaceable webs (21.1-21.6) protrude for their positive guidance. 3. Brennkraft-Drehkörperturbine nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß in den Verschlußdeckeln (18/31) des Turbinengehäuses (10) an den Stirnseiten des Drehkörpers (19) koaxial anflanschbare Lagerteile (31) gelagert sind, welche Radialschlitze (20) des Drehkörpers (19) für die Stege (21) seitlich abdecken und Durchgangsöffnungen (36) für die seitlichen Vor­sprünge (34) der Stege (21.1 - 21.6) aufweisen.3. Internal combustion rotary turbine according to claim 1 or 2, characterized in that in the sealing caps (18/31) of the turbine housing (10) on the end faces of the rotary body (19) bearing parts (31) which can be flanged coaxially are mounted, which radial slots (20) of the rotating body (19) for the webs (21) cover laterally and have through openings (36) for the lateral projections (34) of the webs (21.1-21.6). 4. Brennkraft-Drehkörperturbine nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die stirnseitli­che Abdeckwandungen für den Drehkörper (19) bildenden Lagerteile (31) jeweils mindestens einen an dem Dreh­körper (19) anliegenden Abdichtring (32) tragen.4. Internal combustion rotary turbine according to one of claims 1 to 3, characterized in that the front cover walls for the rotating body (19) forming bearing parts (31) each carry at least one on the rotating body (19) adjacent sealing ring (32). 5. Brennkraft-Drehkörperturbine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß jeder radialver­schiebbare Steg (21.1 - 21.6) über eine in seinem freien Ende federbelastet gelagerte Gleitleiste (22) an der Wandung (25) des Innenraumes (12) des Turbinen­gehäuses (10) anliegt.5. Internal combustion rotary turbine according to one of claims 1 to 4, characterized in that each radially displaceable web (21.1 - 21.6) via a spring-loaded in its free end slide bar (22) on the wall (25) of the interior (12) of the turbine housing (10) is present. 6. Brennkraft-Drehkörperturbine nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß am Umfang des Drehkörpers (19) ein Mehrfaches von zwei radialver­schiebbaren Stegen (21.1 - 21.6) angeordnet ist, wobei sich immer zwei Stege (21) diametral gegenüberliegen.6. Internal combustion rotary turbine according to one of claims 1 to 5, characterized in that a multiple of two radially displaceable webs (21.1-21.6) is arranged on the circumference of the rotating body (19), two webs (21) always being diametrically opposed. 7. Brennkraft-Drehkörperturbine nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der kreiszylindri­sche Drehkörper (19) auf seiner Mantelseite (27) mit Ausnehmungen (26) versehen ist, die jeweils einen Teil der umlaufenden Kammern (12.1 - 12.6) bilden und die in quer zur Drehkörperachse verlaufenden Schnittebenen einen unsymmetrischen Querschnitt haben (Fig. 1).7. Internal combustion rotary turbine according to one of claims 1 to 6, characterized in that the circular cylindrical rotating body (19) on its shell side (27) is provided with recesses (26) which each form part of the circumferential chambers (12.1 - 12.6) and the section planes running transversely to the axis of the rotating body have an asymmetrical cross section (FIG. 1). 8. Brennkraft-Drehkörperturbine nach Anspruch 7, dadurch gekennzeichnet, daß die Ausnehmungen (26) an ihrem in Umlaufrichtung (24) vorderen Rand flacher in die Dreh­körper-Mantelfläche (27) auslaufen als an ihrem hinte­ren Rand.8. internal combustion engine turbine according to claim 7, characterized in that the recesses (26) at their front in the circumferential direction (24) front edge flatter in the rotating body surface (27) than at its rear edge.
EP87106734A 1987-05-08 1987-05-08 Rotary internal-combustion turbine Withdrawn EP0289644A1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758617A (en) * 1993-10-22 1998-06-02 Saitoh & Co., Ltd. Rotary engine
US6237560B1 (en) * 1998-01-06 2001-05-29 Saitoh & Co., Ltd. Overexpansion rotary engine
FR2809453A1 (en) * 2000-05-26 2001-11-30 Jean Claude Orgeval Rotary engine for automotive, aircraft or light agricultural use, includes a stator of trochoidal form with two lobes, with a cylindrical rotor having four pistons slide and functions along the same cycles as a conventional IC engine

Citations (9)

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Publication number Priority date Publication date Assignee Title
GB213669A (en) * 1923-01-04 1924-04-04 Frederic Howel Evans An improved internal combustion engine
FR716754A (en) * 1931-05-07 1931-12-28 Rotary motor
DE596625C (en) * 1931-10-17 1934-05-07 Dimitri Nicolas Hapkins Rotary piston internal combustion engine
GB584155A (en) * 1944-10-20 1947-01-08 George Black Paterson Improvements in rotary internal-combustion engines
DE1451813A1 (en) * 1963-09-06 1969-01-23 Peterson Taft M Rotating internal combustion engine
US3614277A (en) * 1969-05-14 1971-10-19 Toyoda Chuo Kenkyusho Kk Vane-type rotary engine
US3909158A (en) * 1973-11-16 1975-09-30 William A Martin Vane type fluid motor
US4088426A (en) * 1976-05-17 1978-05-09 The Rovac Corporation Sliding vane type of compressor-expander having differential eccentricity feature
DE3321270A1 (en) * 1983-03-31 1984-10-04 Heinz 5102 Würselen Schneider Rotary engine

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB213669A (en) * 1923-01-04 1924-04-04 Frederic Howel Evans An improved internal combustion engine
FR716754A (en) * 1931-05-07 1931-12-28 Rotary motor
DE596625C (en) * 1931-10-17 1934-05-07 Dimitri Nicolas Hapkins Rotary piston internal combustion engine
GB584155A (en) * 1944-10-20 1947-01-08 George Black Paterson Improvements in rotary internal-combustion engines
DE1451813A1 (en) * 1963-09-06 1969-01-23 Peterson Taft M Rotating internal combustion engine
US3614277A (en) * 1969-05-14 1971-10-19 Toyoda Chuo Kenkyusho Kk Vane-type rotary engine
US3909158A (en) * 1973-11-16 1975-09-30 William A Martin Vane type fluid motor
US4088426A (en) * 1976-05-17 1978-05-09 The Rovac Corporation Sliding vane type of compressor-expander having differential eccentricity feature
DE3321270A1 (en) * 1983-03-31 1984-10-04 Heinz 5102 Würselen Schneider Rotary engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5758617A (en) * 1993-10-22 1998-06-02 Saitoh & Co., Ltd. Rotary engine
US6237560B1 (en) * 1998-01-06 2001-05-29 Saitoh & Co., Ltd. Overexpansion rotary engine
FR2809453A1 (en) * 2000-05-26 2001-11-30 Jean Claude Orgeval Rotary engine for automotive, aircraft or light agricultural use, includes a stator of trochoidal form with two lobes, with a cylindrical rotor having four pistons slide and functions along the same cycles as a conventional IC engine

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