WO2002038918A1 - Rotary piston engine - Google Patents
Rotary piston engine Download PDFInfo
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- WO2002038918A1 WO2002038918A1 PCT/DE2000/003911 DE0003911W WO0238918A1 WO 2002038918 A1 WO2002038918 A1 WO 2002038918A1 DE 0003911 W DE0003911 W DE 0003911W WO 0238918 A1 WO0238918 A1 WO 0238918A1
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- Prior art keywords
- rotary
- rotary pistons
- pistons
- rotation
- rotary piston
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Classifications
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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
- F01C1/24—Rotary-piston machines or engines of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
- F01C1/28—Rotary-piston machines or engines of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions of other than internal-axis type
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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
- F01C1/24—Rotary-piston machines or engines of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions
Definitions
- the invention relates to a rotary piston machine, under which power and / or work machines are to be understood.
- the invention has for its object to develop a completely new concept for a rotary piston machine, which avoids the disadvantages of the Wankel engine and in particular allows very high speeds.
- a rotary piston machine with the following features: a) four identically designed rotary pistons are rotatably mounted with their respective central and parallel axes of rotation at the four corner points of an imaginary square;
- each rotary piston is apparently elliptical, but is composed of two two quarter circles, the radius of the two opposite quarter circles forming the two flat sides of the apparent ellipse being the difference between the edge length of the imaginary square and the smaller radius of the other two , which corresponds to the peaks of the apparent ellipse forming quarter circles;
- the disk-shaped rotary lobes are arranged rotated in a plane perpendicular to their axes of rotation by 90 ° with respect to the adjacent rotary lobes, each rotary lobe sealingly abutting the two adjacent rotary lobes;
- the rotary lobes are kinematically connected to each other in such a way that they rotate evenly, at the same speed and in the same direction of rotation;
- each rotary piston is composed of two three sixth circles, which alternate with a larger radius and a smaller radius, the sum of which corresponds to the side length of the imaginary equilateral triangle;
- the rotary lobes are kinematically connected to each other in such a way that they rotate evenly, at the same speed and in the same direction of rotation;
- the rotary pistons rolling along the outer contour of the respectively adjacent rotary pistons enclose between them a compression chamber which changes with the piston rotation and which is sealed in the axial direction by a sandwich-like seal between the housing covers enclosing the rotary pistons.
- the compression chamber is therefore no longer between a rotary piston and a fixed part, but between the closed rotary piston, which changes in shape but has an annular wall. The compression takes place by uniform movement of all rotary pistons to each other.
- the rotary piston machine according to the invention thus only has parts which perform a pure rotation, that is to say rotate about fixed axes of rotation. In theory, any high speeds are possible.
- the rotary piston machine according to the invention can be used as a pump for gaseous or liquid media, and also as a compressor for gaseous media. Furthermore, training as an internal combustion engine is possible, in which all known fuels can be used.
- the piston arrangement according to the invention leads to two or three compressions per revolution, which results in an increase in the firing order. Due to the possible high speed with smooth running, due to pure rotational movements, the engine according to the invention develops considerably more power than a comparable large gasoline engine. For a given power, a much smaller motor according to the invention can therefore be used, which opens up new possibilities for vehicle construction.
- the alternative solution with four rotary lobes is preferred, since the shape of the combustion chamber is more favorable here than when using only three rotary lobes.
- the rotary lobes can be kinematically connected via a central gearwheel, which can be mounted on a central tube in an internal combustion engine, the inside diameter of which is large enough to accommodate a spark plug.
- the valve control is carried out by means of an inlet valve disk which rotates and which has an inlet slot, and an outlet valve disk which rotates and which has an outlet slot.
- the valve disks are then arranged on the outside of the combustion chamber, with inlet and outlet openings lying in the path of rotation of the valve slots, which enable a fluidic connection of an intake duct or a blow-out duct to the compression chamber.
- each rotary piston rotates on its side facing away from the compression chamber in a precompression chamber closed by stationary housing walls.
- pre-compression chambers When using pre-compression chambers, their inlets can be connected to the line equipped with a throttle valve, while the outlets of the pre-compression chambers open into the above-mentioned intake duct, where gasoline may also be injected.
- the structure is then analogous to a conventional turbocharger. If, on the other hand, the exterior spaces mentioned are not used as pre-compression chambers, they must be ventilated, or they simply pass into the open engine interior to avoid energy losses due to useless compression.
- FIG. 1 shows a top view of a rotary piston, the outer contour of which is composed of two two quarter circles according to FIGS. 1 a) and 1 b);
- Figure 2 is a top view of the arrangement of four between them
- FIG. 3 shows three different rotary piston positions in a representation according to FIG. 2;
- Figure 4 in a representation according to Figure 1 c) three rotary pistons with a different, each leading to a different compression;
- FIG. 5 shows a rotary piston arrangement according to FIGS. 2 or 3 in a housing defining pre-compression chambers
- FIG. 6 shows a top view of an upper housing cover of a single-cylinder engine with a rotary piston arrangement according to FIG. 2 or 3;
- FIGS. 6 and 7 shows a plan view of a lower housing cover of the single-cylinder engine according to FIGS. 6 and
- FIG. 8 shows, in a representation according to FIG. 5, a rotary piston arrangement comprising three identical rotary pistons, the outer contour of which is composed of two three sixth circles.
- Figure 1 a shows a quarter circle 1 with the radius R.
- FIG. 1 b) shows a quarter circle 2 with a radius r that is smaller than the radius R.
- Figure 1 c) shows a top view of a disk-shaped rotary piston 3, the apparently elliptical outer contour of which is composed of two two quarter circles 1, 2, the two flat sides of the apparent ellipse being formed by the two quarter circles 1 and the tips of the apparent ellipse being formed by the two quarter circles 2 are.
- FIG. 2 shows four identically designed rotary pistons 3, which correspond to the illustration according to FIG. 1 c) and are rotatably mounted with their axis of rotation 4, which is arranged centrally and parallel to one another, at the four corner points of an imaginary square with edge length d.
- the edge length d of the imaginary square corresponds to the sum of the two radii R and r of the quarter circles 1, 2.
- FIG. 2 also shows that the rotary pistons 3 in a plane perpendicular to their axes of rotation 4 by 90 ° with respect to the neighboring ones Rotary pistons are arranged rotated, each rotary piston 3 with its outer contour 5 sealingly abuts the two adjacent rotary pistons, so that the four rotary pistons 3 enclose a compression space V between them.
- the rotary pistons 3 are kinematically connected to one another in such a way that they rotate uniformly, at the same speed and in the same direction of rotation 6. As they rotate, the rotary pistons 3 roll off the outer contour 5 of the adjacent rotary pistons.
- FIG. 3 shows that in this rolling process the compression space enclosed by the four rotary pistons 3 is reduced in volume.
- V In the rotational position of the four rotary pistons 3 shown in FIG. 3a), there is a maximum compression space V, which is equal to 1.
- the compression space V is only 5/9 of its maximum value and with the piston position according to FIG. 3c) only 1/9 of the initial value.
- FIG. 4 shows three examples, the embodiment according to a) leading to a compression of 1:49, the embodiment according to b) to a compression 1: 9 and the embodiment according to c) to a compression 1: 2.78.
- each rotary piston 3 rotates on its side facing away from the compression chamber V in a precompression chamber 8 closed by stationary housing walls 7.
- the use of these four pre-compression chambers 8 in pump or compressor operation is indicated by flow arrows, with supply or discharge through e.g. Diaphragm valves can be controlled.
- FIG. 6 shows a roughly schematic representation of a single-cylinder engine, the four rotary pistons 3 of which are sandwiched by an upper housing cover 9 and a lower housing cover 10 (see FIG. 7), the compression space V enclosed between the four rotary pistons 3 being axially separated from the two Housing covers 9, 10 is sealed off.
- FIG. 6 also shows that the four rotary pistons 3 are kinematically connected to one another via gearwheels 11 so that they rotate at the same speed and in the same direction of rotation 6.
- the middle gear is mounted on a central support tube 12, which can also be used to hold a spark plug.
- FIG. 7 shows the underside of the housing of the single-cylinder engine according to FIG. 6.
- the schematically illustrated intake duct 13 can be connected to the compression chamber in terms of flow via an inlet opening 16 via a rotating inlet valve disk 15 which is provided with an inlet slot 14.
- a blow-out or exhaust pipe 17 is connected via a rotating one Outlet slit 19 having outlet slot 18 is connected to the compression chamber via an outlet opening 20.
- FIG. 8 shows a rotary piston arrangement which comprises only three identically designed rotary pistons 3 ', each of which is rotatably mounted with its axis of rotation 4' arranged centrally and parallel to one another at the tips of an imaginary equilateral triangle.
- the outer contour 5 'of each rotary piston 3' is composed of two three sixth circles 21, 22, which alternate with a larger radius R 'and a smaller radius r', the sum of which corresponds to the side length d 1 of the imaginary equilateral triangle.
- each rotary piston 3 ' can run on its side facing away from the compression chamber V in a precompression chamber 8' closed by stationary housing walls 7 '.
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Abstract
Description
RotationskolbenmaschineRotary piston engine
Die Erfindung betrifft eine Rotationskolbenmaschine, unter der Kraft- und/oder Arbeitsmaschinen zu verstehen sind.The invention relates to a rotary piston machine, under which power and / or work machines are to be understood.
Es hat in der Vergangenheit zahlreiche Versuche gegeben, die physikalischen Nachteile des Ottomotors zu umgehen, bei dem durch den Antrieb eines in einem Zylinder geführten Kolbens ständig Massen beschleunigt und wieder abgebremst werden müssen. Dies führt zu unruhigem Lauf und bei hoher Drehzahl zu einer hohen Materialbelastung. Ein in der Praxis realisierter Umgehungsversuch ist als Wankelmotor bekannt geworden. Hier wird der sich drehende Kolben zusätzlich noch auf einer Kreisbahn bewegt, weshalb diese Bauart auch als Kreiskolbenmotor bezeichnet wird. Der sich drehende Kreiskolben bewegt sich in einem geschlossenen Raum und verdichtet dabei Teilbereiche des Raumes, in denen dann eine Zündung erfolgen kann. Dabei erfolgt die Verdichtung immer zwischen einem einzigen Kreiskolben und einem ihn umgebenden, durch stationäre Wandungen begrenzten stehenden Raum. Nachteilig bei diesem Motorentyp ist unter anderem die erforderliche Bewegung des Kolbens auf einer Kreisbahn.There have been numerous attempts in the past to circumvent the physical disadvantages of the gasoline engine, in which masses have to be continuously accelerated and decelerated again by driving a piston guided in a cylinder. This leads to restless running and a high material load at high speed. A circumvention attempt implemented in practice has become known as a Wankel engine. Here, the rotating piston is also moved on a circular path, which is why this type is also called a rotary piston engine. The rotating rotary piston moves in a closed room and compresses parts of the room in which ignition can then take place. The compression always takes place between a single rotary piston and a surrounding space that is delimited by stationary walls. One disadvantage of this type of engine is the required movement of the piston on a circular path.
Der Erfindung liegt die Aufgabe zugrunde, für eine Rotationskolbenmaschine ein völlig neues Konzept zu entwickeln, das die Nachteile des Wankelmotors vermeidet und insbesondere sehr hohe Drehzahlen zulässt.The invention has for its object to develop a completely new concept for a rotary piston machine, which avoids the disadvantages of the Wankel engine and in particular allows very high speeds.
Diese Aufgabe wird erfindungsgemäß durch eine Rotationskolbenmaschine mit folgenden Merkmalen gelöst: a) vier identisch ausgebildete Drehkolben sind mit ihrer jeweils zentrisch und parallel zueinander angeordneten Drehachse an den vier Eckpunkten eines gedachten Quadrates drehbar gelagert;This object is achieved according to the invention by a rotary piston machine with the following features: a) four identically designed rotary pistons are rotatably mounted with their respective central and parallel axes of rotation at the four corner points of an imaginary square;
b) die Außenkontur jedes Drehkolbens ist scheinbar ellipsenförmig, setzt sich aber zusammen aus zweimal zwei Viertelkreisen, wobei der Radius der beiden sich gegenüberliegenden, die beiden Flachseiten der scheinbaren Ellipse bildenden Viertelkreise der Differenz zwischen der Kantenlänge des gedachten Quadrates und dem kleineren Radius der beiden anderen, die Spitzen der scheinbaren Ellipse bildenden Viertelkreise entspricht;b) the outer contour of each rotary piston is apparently elliptical, but is composed of two two quarter circles, the radius of the two opposite quarter circles forming the two flat sides of the apparent ellipse being the difference between the edge length of the imaginary square and the smaller radius of the other two , which corresponds to the peaks of the apparent ellipse forming quarter circles;
c) die scheibenförmigen Drehkolben sind in einer senkrecht zu ihren Drehachsen liegenden Ebene um jeweils 90° gegenüber den benachbarten Drehkolben verdreht angeordnet, wobei jeder Drehkolben mit seiner Außenkontur dichtend an den beiden benachbarten Drehkolben anliegt;c) the disk-shaped rotary lobes are arranged rotated in a plane perpendicular to their axes of rotation by 90 ° with respect to the adjacent rotary lobes, each rotary lobe sealingly abutting the two adjacent rotary lobes;
d) die Drehkolben sind kinematisch miteinander so verbunden, dass sie sich gleichmäßig, mit gleicher Drehzahl und in derselben Drehrichtung drehen;d) the rotary lobes are kinematically connected to each other in such a way that they rotate evenly, at the same speed and in the same direction of rotation;
e) die bei ihrer Rotation an der Außenkontur der jeweils benachbar- ten Drehkolben abrollenden Drehkolben schließen zwischen sich einen sich mit der Kolbendrehung ändernden Verdichtungsraum ein, der in axialer Richtung von die Drehkolben sandwichartig zwischen sich einschließenden Gehäuseabdeckungen abdichtend abgeschlossen ist. Eine auf dem gleichen Konstruktions- und Wirkungsprinzip beruhende Alternativlösung ist erfindungsgemäß durch folgende Merkmale gekennzeichnet:e) the rotary pistons rolling along the outer contour of the respectively adjacent rotary pistons enclose between them a compression chamber which changes with the piston rotation and which is sealed in the axial direction by a sandwich-like seal between the housing covers enclosing the rotary pistons. An alternative solution based on the same construction and operating principle is characterized according to the invention by the following features:
a) drei identisch ausgebildete Drehkolben sind mit ihrer jeweils zentrisch und parallel zueinander angeordneten Drehachse an den Spitzen eines gedachten gleichseitigen Dreiecks drehbar gelagert;a) three identically designed rotary pistons are rotatably mounted with their respective central and parallel axes of rotation at the tips of an imaginary equilateral triangle;
b) die Außenkontur jedes Drehkolbens setzt sich zusammen aus zweimal drei Sechstelkreisen, die abwechselnd aufeinander folgen mit einem größeren Radius und einem kleineren Radius, deren Summe der Seitenlänge des gedachten gleichseitigen Dreiecks entspricht;b) the outer contour of each rotary piston is composed of two three sixth circles, which alternate with a larger radius and a smaller radius, the sum of which corresponds to the side length of the imaginary equilateral triangle;
c) die scheibenförmigen Drehkolben sind in einer senkrecht zu ihrenc) the disc-shaped rotary pistons are in a perpendicular to their
Drehachsen liegenden Ebene in jeweils gleicher Drehstellung angeordnet, wobei jeder Drehkolben mit seiner Außenkontur dichtend an den beiden benachbarten Drehkolben anliegt;Axes of rotation lying in each case arranged in the same rotational position, with each rotary piston sealingly abuts the two adjacent rotary pistons with its outer contour;
d) die Drehkolben sind kinematisch miteinander so verbunden, dass sie sich gleichmäßig, mit gleicher Drehzahl und in derselben Drehrichtung drehen;d) the rotary lobes are kinematically connected to each other in such a way that they rotate evenly, at the same speed and in the same direction of rotation;
e) die bei ihrer Rotation an der Außenkontur der jeweils benachbar- ten Drehkolben abrollenden Drehkolben schließen zwischen sich einen sich mit der Kolbendrehung ändernden Verdichtungsraum ein, der in axialer Richtung von die Drehkolben sandwichartig zwischen sich einschließenden Gehäuseabdeckungen abdichtend abgeschlossen ist. Erfindungsgemäß liegt der Verdichtungsraum somit nicht mehr zwischen einem Drehkolben und einem raumfesten Teil sondern zwischen den eine geschlossene, sich in ihrer Form aber ändernde Ringwandung bildenden Drehkolben. Die Verdichtung erfolgt dabei durch gleichförmige Bewegung aller Drehkolben zueinander. Die erfindungsgemäße Rotationskolbenmaschine weist somit nur Teile auf, die eine reine Rotation ausführen, also um jeweils ortsfeste Drehachsen rotieren. Dadurch sind theoretisch beliebig hohe Drehzahlen möglich.e) the rotary pistons rolling along the outer contour of the respectively adjacent rotary pistons enclose between them a compression chamber which changes with the piston rotation and which is sealed in the axial direction by a sandwich-like seal between the housing covers enclosing the rotary pistons. According to the invention, the compression chamber is therefore no longer between a rotary piston and a fixed part, but between the closed rotary piston, which changes in shape but has an annular wall. The compression takes place by uniform movement of all rotary pistons to each other. The rotary piston machine according to the invention thus only has parts which perform a pure rotation, that is to say rotate about fixed axes of rotation. In theory, any high speeds are possible.
Die erfindungsgemäße Rotationskolbenmaschine kann für gasförmige oder flüssige Medien als Pumpe, für gasförmige Medien auch als Kompressor eingesetzt werden. Ferner ist eine Ausbildung als Verbrennungsmaschine möglich, bei der alle bekannten Treibstoffe eingesetzt werden können. Die erfindungs- gemäße Kolbenanordnung führt zu zwei bzw. drei Kompressionen pro Umdrehung, woraus sich eine Erhöhung der Zündfolge ergibt. Aufgrund der möglichen hohen Drehzahl bei ruhigem Lauf, bedingt durch reine Rotationsbewegungen, entwickelt der erfindungsgemäße Motor erheblich mehr Leistung als ein vergleichbar großer Ottomotor. Bei vorgegebener Leistung kann daher ein wesentlich kleinerer erfindungsgemäßer Motor verwendet werden, der dem Fahrzeugbau neue Möglichkeiten erschließt.The rotary piston machine according to the invention can be used as a pump for gaseous or liquid media, and also as a compressor for gaseous media. Furthermore, training as an internal combustion engine is possible, in which all known fuels can be used. The piston arrangement according to the invention leads to two or three compressions per revolution, which results in an increase in the firing order. Due to the possible high speed with smooth running, due to pure rotational movements, the engine according to the invention develops considerably more power than a comparable large gasoline engine. For a given power, a much smaller motor according to the invention can therefore be used, which opens up new possibilities for vehicle construction.
Bei Verwendung als Verbrennungsmotor ist der Alternativlösung mit vier Drehkolben der Vorzug zu geben, da hier die Form des Brennraumes günstiger ist als bei Verwendung von nur drei Drehkolben.When used as an internal combustion engine, the alternative solution with four rotary lobes is preferred, since the shape of the combustion chamber is more favorable here than when using only three rotary lobes.
Die kinematische Verbindung der Drehkolben kann über ein zentrales Zahnrad erfolgen, das in einer Verbrennungsmaschine auf einem zentralen Rohr gelagert sein kann, dessen lichter Innendurchmesser groß genug ist, um eine Zündkerze aufnehmen zu können. Ferner ist es zweckmäßig, wenn die Ventilsteuerung durch eine mitdrehende, mit einem Einlassschlitz versehene Einlassventilscheibe und eine mitdrehende, mit einem Auslassschlitz versehene Auslassventilscheibe erfolgt. Die Ventil- Scheiben sind dann an der Außenseite des Verbrennungsraumes angeordnet, wobei in dem Drehweg der Ventilschlitze Ein- bzw. Auslassöffnungen liegen, die eine strömungstechnische Verbindung eines Ansaugkanals bzw. eines Ausblaskanals mit dem Verdichtungsraum ermöglichen.The rotary lobes can be kinematically connected via a central gearwheel, which can be mounted on a central tube in an internal combustion engine, the inside diameter of which is large enough to accommodate a spark plug. Furthermore, it is expedient if the valve control is carried out by means of an inlet valve disk which rotates and which has an inlet slot, and an outlet valve disk which rotates and which has an outlet slot. The valve disks are then arranged on the outside of the combustion chamber, with inlet and outlet openings lying in the path of rotation of the valve slots, which enable a fluidic connection of an intake duct or a blow-out duct to the compression chamber.
In einer Weiterentwicklung kann es vorteilhaft sein, wenn jeder Drehkolben auf seiner dem Verdichtungsraum abgewandten Seite in einer durch stationäre Gehäusewandungen geschlossenen Vorverdichtungskammer umläuft.In a further development, it can be advantageous if each rotary piston rotates on its side facing away from the compression chamber in a precompression chamber closed by stationary housing walls.
Bei Verwendung von Vorverdichtungskammern können deren Einlasse an die mit einer Drosselklappe bestückten Leitung angeschlossen werden, während die Auslässe der Vorverdichtungskammern in den vorstehend genannten Ansaugkanal münden, wo gegebenenfalls auch Benzin eingespritzt wird. Der Aufbau ist dann analog einem üblichen Turbolader. Werden hingegen die genannten Außenräume nicht als Vorverdichtungskammern genutzt, müssen sie belüftet werden, oder aber sie gehen einfach in den offenen Motorinnenraum über, um Energieverluste durch nutzlose Kompression zu vermeiden.When using pre-compression chambers, their inlets can be connected to the line equipped with a throttle valve, while the outlets of the pre-compression chambers open into the above-mentioned intake duct, where gasoline may also be injected. The structure is then analogous to a conventional turbocharger. If, on the other hand, the exterior spaces mentioned are not used as pre-compression chambers, they must be ventilated, or they simply pass into the open engine interior to avoid energy losses due to useless compression.
In der Zeichnung sind einige als Beispiele dienende Ausführungsformen der Erfindung schematisch dargestellt. Es zeigen:Some exemplary embodiments of the invention are shown schematically in the drawing. Show it:
Figur 1 in Draufsicht einen Drehkolben, dessen Außenkontur sich zusammensetzt aus zweimal zwei Viertelkreisen gemäß den Figuren 1 a) und 1 b); Figur 2 in Draufsicht die Anordnung von vier zwischen sich einen1 shows a top view of a rotary piston, the outer contour of which is composed of two two quarter circles according to FIGS. 1 a) and 1 b); Figure 2 is a top view of the arrangement of four between them
Verdichtungsraum einschließenden Drehkolben gemäß Figur 1 c);Rotary piston enclosing the compression chamber according to FIG. 1 c);
Figur 3 in einer Darstellung gemäß Figur 2 drei verschiedene Drehkolbenstellungen;FIG. 3 shows three different rotary piston positions in a representation according to FIG. 2;
Figur 4 in einer Darstellung gemäß Figur 1 c) drei Drehkolben mit einer unterschiedlichen, jeweils zu einer anderen Verdichtung führenden Außenkontur;Figure 4 in a representation according to Figure 1 c) three rotary pistons with a different, each leading to a different compression;
Figur 5 eine Drehkolbenanordnung gemäß den Figuren 2 oder 3 in einem Vorverdichtungskammern definierenden Gehäuse;FIG. 5 shows a rotary piston arrangement according to FIGS. 2 or 3 in a housing defining pre-compression chambers;
Figur 6 in Draufsicht eine obere Gehäuseabdeckung eines Einzylindermotors mit einer Drehkolbenanordnung gemäß Figur 2 oder 3;FIG. 6 shows a top view of an upper housing cover of a single-cylinder engine with a rotary piston arrangement according to FIG. 2 or 3;
Figur 7 eine Draufsicht auf eine untere Gehäuseabdeckung des Einzylindermotors gemäß Figur 6 und7 shows a plan view of a lower housing cover of the single-cylinder engine according to FIGS. 6 and
Figur 8 in einer Darstellung gemäß Figur 5 eine Drehkolbenanordnung aus drei identischen Drehkolben, deren Außenkontur sich aus zweimal drei Sechstelkreisen zusammensetzt.8 shows, in a representation according to FIG. 5, a rotary piston arrangement comprising three identical rotary pistons, the outer contour of which is composed of two three sixth circles.
Figur 1 a) zeigt einen Viertelkreis 1 mit dem Radius R.Figure 1 a) shows a quarter circle 1 with the radius R.
Figur 1 b) zeigt einen Viertelkreis 2 mit einem gegenüber dem Radius R kleine- ren Radius r. Figur 1 c) zeigt in Draufsicht einen scheibenförmigen Drehkolben 3, dessen scheinbar ellipsenförmige Außenkontur sich aus zweimal zwei Viertelkreisen 1 , 2 zusammensetzt, wobei die beiden Flachseiten der scheinbaren Ellipse von den beiden Viertelkreisen 1 und die Spitzen der scheinbaren Ellipse von den beiden Viertelkreisen 2 gebildet sind.FIG. 1 b) shows a quarter circle 2 with a radius r that is smaller than the radius R. Figure 1 c) shows a top view of a disk-shaped rotary piston 3, the apparently elliptical outer contour of which is composed of two two quarter circles 1, 2, the two flat sides of the apparent ellipse being formed by the two quarter circles 1 and the tips of the apparent ellipse being formed by the two quarter circles 2 are.
Figur 2 zeigt vier identisch ausgebildete, der Darstellung gemäß Figur 1 c) entsprechende Drehkolben 3, die mit ihrer jeweils zentrisch und parallel zueinan- der angeordneten Drehachse 4 an den vier Eckpunkten eines gedachten Quadrates mit der Kantenlänge d drehbar gelagert sind. Dabei entspricht die Kantenlänge d des gedachten Quadrates der Summe der beiden Radien R und r der Viertelkreise 1 , 2. Figur 2 lässt ferner erkennen, dass die Drehkolben 3 in einer senkrecht zu ihren Drehachsen 4 liegenden Ebene um jeweils 90° ge- genüber den benachbarten Drehkolben verdreht angeordnet sind, wobei jeder Drehkolben 3 mit seiner Außenkontur 5 dichtend an den beiden benachbarten Drehkolben anliegt, so dass die vier Drehkolben 3 zwischen sich einen Verdichtungsraum V einschließen.FIG. 2 shows four identically designed rotary pistons 3, which correspond to the illustration according to FIG. 1 c) and are rotatably mounted with their axis of rotation 4, which is arranged centrally and parallel to one another, at the four corner points of an imaginary square with edge length d. The edge length d of the imaginary square corresponds to the sum of the two radii R and r of the quarter circles 1, 2. FIG. 2 also shows that the rotary pistons 3 in a plane perpendicular to their axes of rotation 4 by 90 ° with respect to the neighboring ones Rotary pistons are arranged rotated, each rotary piston 3 with its outer contour 5 sealingly abuts the two adjacent rotary pistons, so that the four rotary pistons 3 enclose a compression space V between them.
Die Drehkolben 3 sind kinematisch miteinander so verbunden, dass sie sich gleichmäßig, mit gleicher Drehzahl und in derselben Drehrichtung 6 drehen. Bei ihrer Rotation rollen die Drehkolben 3 an der Außenkontur 5 der jeweils benachbarten Drehkolben ab. Figur 3 lässt erkennen, dass sich bei diesem Abrollvorgang der von den vier Drehkolben 3 eingeschlossene Verdichtungsraum volumenmäßig vermindert. Bei der in Figur 3a) dargestellten Drehstellung der vier Drehkolben 3 ergibt sich ein maximaler Verdichtungsraum V, der gleich 1 angesetzt ist. Bei der Drehkolbenstellung gemäß Figur 3b) beträgt der Verdichtungsraum V nur noch 5/9 seines Maximalwertes und bei der Kolbenstellung gemäß Figur 3c) nur noch 1/9 des Ausgangswertes. Das Verdichtungsverhältnis errechnet sich aus R /r2 und kann somit durch entsprechende Wahl der Radien R, r zwischen 1 (R = r) und unendlich (r = 0) liegen. Hierzu zeigt Figur 4 drei Beispiele, wobei die Ausführungsform gemäß a) zu einer Verdichtung von 1 :49, die Ausführungsform gemäß b) zu einer Verdichtung 1 :9 und die Ausführungsform gemäß c) zu einer Verdichtung 1 :2,78 führen.The rotary pistons 3 are kinematically connected to one another in such a way that they rotate uniformly, at the same speed and in the same direction of rotation 6. As they rotate, the rotary pistons 3 roll off the outer contour 5 of the adjacent rotary pistons. FIG. 3 shows that in this rolling process the compression space enclosed by the four rotary pistons 3 is reduced in volume. In the rotational position of the four rotary pistons 3 shown in FIG. 3a), there is a maximum compression space V, which is equal to 1. With the rotary piston position according to FIG. 3b), the compression space V is only 5/9 of its maximum value and with the piston position according to FIG. 3c) only 1/9 of the initial value. The compression ratio is calculated from R / r 2 and can therefore be between 1 (R = r) and infinite (r = 0) by selecting the radii R, r accordingly. FIG. 4 shows three examples, the embodiment according to a) leading to a compression of 1:49, the embodiment according to b) to a compression 1: 9 and the embodiment according to c) to a compression 1: 2.78.
Die schematische Darstellung gemäß Figur 5 lässt erkennen, dass jeder Dreh- kolben 3 auf seiner dem Verdichtungsraum V abgewandten Seite in einer durch stationäre Gehäusewandungen 7 geschlossenen Vorverdichtungskammer 8 umläuft. Die Nutzung dieser vier Vorverdichtungskammern 8 bei Pumpen- oder Kompressorbetrieb ist durch Strömungspfeile angedeutet, wobei Zu- oder Abfuhr durch z.B. Membranventile gesteuert werden kann.The schematic representation according to FIG. 5 shows that each rotary piston 3 rotates on its side facing away from the compression chamber V in a precompression chamber 8 closed by stationary housing walls 7. The use of these four pre-compression chambers 8 in pump or compressor operation is indicated by flow arrows, with supply or discharge through e.g. Diaphragm valves can be controlled.
Figur 6 zeigt in grobschematischer Darstellung einen Einzylindermotor, dessen vier Drehkolben 3 sandwichartig von einer oberen Gehäuseabdeckung 9 und einer unteren Gehäuseabdeckung 10 (siehe Figur 7) abgedeckt sind, wobei der zwischen den vier Drehkolben 3 eingeschlossene Verdichtungsraum V in axia- ler Richtung von den beiden Gehäuseabdeckungen 9, 10 abdichtend abgeschlossen ist. Figur 6 lässt ferner erkennen, dass die vier Drehkolben 3 über Zahnräder 1 1 kinematisch so miteinander verbunden sind, dass sie sich mit gleicher Drehzahl und in derselben Drehrichtung 6 drehen. Dabei ist das mittlere Zahnrad auf einem zentralen Tragrohr 12 gelagert, das auch zur Aufnahme einer Zündkerze dienen kann.FIG. 6 shows a roughly schematic representation of a single-cylinder engine, the four rotary pistons 3 of which are sandwiched by an upper housing cover 9 and a lower housing cover 10 (see FIG. 7), the compression space V enclosed between the four rotary pistons 3 being axially separated from the two Housing covers 9, 10 is sealed off. FIG. 6 also shows that the four rotary pistons 3 are kinematically connected to one another via gearwheels 11 so that they rotate at the same speed and in the same direction of rotation 6. The middle gear is mounted on a central support tube 12, which can also be used to hold a spark plug.
Figur 7 zeigt die Gehäuseunterseite des Einzylindermotors gemäß Figur 6. Der schematisch dargestellte Ansaugkanal 13 kann über eine mitdrehende, mit einem Einlassschlitz 14 versehene Einlassventilscheibe 15 über eine Einlas- söffnung 16 strömungstechnisch mit dem Verdichtungsraum verbunden werden. Eine Ausblas- bzw. Auspuffleitung 17 wird über eine mitdrehende, einen Auslassschlitz 18 aufweisende Auslassventilscheibe 19 über eine Auslassöffnung 20 an den Verdichtungsraum angeschlossen.FIG. 7 shows the underside of the housing of the single-cylinder engine according to FIG. 6. The schematically illustrated intake duct 13 can be connected to the compression chamber in terms of flow via an inlet opening 16 via a rotating inlet valve disk 15 which is provided with an inlet slot 14. A blow-out or exhaust pipe 17 is connected via a rotating one Outlet slit 19 having outlet slot 18 is connected to the compression chamber via an outlet opening 20.
Figur 8 zeigt eine Drehkolbenanordnung, die nur drei identisch ausgebildete Drehkolben 3' umfasst, die mit ihrer jeweils zentrisch und parallel zueinander angeordneten Drehachse 4' an den Spitzen eines gedachten gleichseitigen Dreiecks drehbar gelagert sind. Die Außenkontur 5' jedes Drehkolbens 3' setzt sich zusammen aus zweimal drei Sechstelkreisen 21 , 22, die abwechselnd aufeinander folgen mit einem größeren Radius R' und einem kleineren Radius r', deren Summe der Seitenlänge d1 des gedachten gleichseitigen Dreiecks entspricht.FIG. 8 shows a rotary piston arrangement which comprises only three identically designed rotary pistons 3 ', each of which is rotatably mounted with its axis of rotation 4' arranged centrally and parallel to one another at the tips of an imaginary equilateral triangle. The outer contour 5 'of each rotary piston 3' is composed of two three sixth circles 21, 22, which alternate with a larger radius R 'and a smaller radius r', the sum of which corresponds to the side length d 1 of the imaginary equilateral triangle.
Im Übrigen entsprechen Anordnung und Wirkungsweise der Anordnung nach Figur 8 der Drehkolbenanordnung gemäß Figur 2 bzw. Figur 3. Auch hier schließen die bei ihrer Rotation an der Außenkontur 5' der jeweils benachbarten Drehkolben 3' abrollenden Drehkolben zwischen sich einen sich mit der Kolbendrehung ändernden Verdichtungsraum V ein, der in axialer Richtung von die Drehkolben 3' sandwichartig zwischen sich einschließenden Gehäuse- abdeckungen abdichtend abgeschlossen ist. Ferner kann jeder Drehkolben 3' auf seiner dem Verdichtungsraum V abgewandten Seite in einer durch stationäre Gehäusewandungen 7' geschlossenen Vorverdichtungskammer 8' umlaufen. For the rest, the arrangement and mode of operation of the arrangement according to FIG. 8 correspond to the rotary piston arrangement according to FIG. 2 or FIG V a, which is sealed in the axial direction by the rotary pistons 3 'in a sandwich-like manner between enclosing housing covers. Furthermore, each rotary piston 3 'can run on its side facing away from the compression chamber V in a precompression chamber 8' closed by stationary housing walls 7 '.
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10085404T DE10085404D2 (en) | 2000-11-09 | 2000-11-09 | Rotary piston engine |
| AU2001225012A AU2001225012A1 (en) | 2000-11-09 | 2000-11-09 | Rotary piston engine |
| PCT/DE2000/003911 WO2002038918A1 (en) | 2000-11-09 | 2000-11-09 | Rotary piston engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/DE2000/003911 WO2002038918A1 (en) | 2000-11-09 | 2000-11-09 | Rotary piston engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2002038918A1 true WO2002038918A1 (en) | 2002-05-16 |
Family
ID=5648008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2000/003911 Ceased WO2002038918A1 (en) | 2000-11-09 | 2000-11-09 | Rotary piston engine |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU2001225012A1 (en) |
| DE (1) | DE10085404D2 (en) |
| WO (1) | WO2002038918A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2921645A1 (en) * | 2014-03-17 | 2015-09-23 | Antoine Warnery | Turbine with screw rotors |
| WO2019135083A1 (en) * | 2018-01-04 | 2019-07-11 | International Electric Company Limited | Compressor or expander |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799126A (en) * | 1971-02-22 | 1974-03-26 | J Park | Rotary machines |
| DE3709014A1 (en) * | 1986-12-31 | 1988-07-14 | Densch Dietrich | Stirling engine with rotary piston situated in a gas-tight inner chamber of a housing |
| DE4339469A1 (en) * | 1993-11-19 | 1995-05-24 | Jan Birkholz | Combustion engine with periodically varying working chambers |
| DE19616880A1 (en) * | 1996-04-27 | 1997-11-06 | Norbert Bischof | Pump with two- or three-cornered rotors |
| DE19802143A1 (en) * | 1998-01-22 | 1999-09-16 | Robert Servos | Rotary pump for food kneading and mixing has four oval discs which are easy to clean |
-
2000
- 2000-11-09 DE DE10085404T patent/DE10085404D2/en not_active Expired - Lifetime
- 2000-11-09 AU AU2001225012A patent/AU2001225012A1/en not_active Withdrawn
- 2000-11-09 WO PCT/DE2000/003911 patent/WO2002038918A1/en not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3799126A (en) * | 1971-02-22 | 1974-03-26 | J Park | Rotary machines |
| DE3709014A1 (en) * | 1986-12-31 | 1988-07-14 | Densch Dietrich | Stirling engine with rotary piston situated in a gas-tight inner chamber of a housing |
| DE4339469A1 (en) * | 1993-11-19 | 1995-05-24 | Jan Birkholz | Combustion engine with periodically varying working chambers |
| DE19616880A1 (en) * | 1996-04-27 | 1997-11-06 | Norbert Bischof | Pump with two- or three-cornered rotors |
| DE19802143A1 (en) * | 1998-01-22 | 1999-09-16 | Robert Servos | Rotary pump for food kneading and mixing has four oval discs which are easy to clean |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2921645A1 (en) * | 2014-03-17 | 2015-09-23 | Antoine Warnery | Turbine with screw rotors |
| WO2019135083A1 (en) * | 2018-01-04 | 2019-07-11 | International Electric Company Limited | Compressor or expander |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001225012A1 (en) | 2002-05-21 |
| DE10085404D2 (en) | 2004-01-22 |
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