EP0897458B1 - Rotary piston internal combustion engine - Google Patents

Rotary piston internal combustion engine Download PDF

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Publication number
EP0897458B1
EP0897458B1 EP97917929A EP97917929A EP0897458B1 EP 0897458 B1 EP0897458 B1 EP 0897458B1 EP 97917929 A EP97917929 A EP 97917929A EP 97917929 A EP97917929 A EP 97917929A EP 0897458 B1 EP0897458 B1 EP 0897458B1
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EP
European Patent Office
Prior art keywords
exhaust
rotary piston
valves
rotary
engine
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EP97917929A
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German (de)
French (fr)
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EP0897458A1 (en
Inventor
Ke Jian Shang
Hua Miao
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00Rotary-piston machines or engines
    • F01C1/30Rotary-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
    • F01C1/34Rotary-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
    • F01C1/356Rotary-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 outer member
    • F01C1/3562Rotary-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 outer member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C11/00Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type
    • F01C11/002Combinations of two or more machines or engines, each being of rotary-piston or oscillating-piston type of similar working principle
    • F01C11/004Combinations 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01CROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C20/00Control of, monitoring of, or safety arrangements for, machines or engines
    • F01C20/10Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber
    • F01C20/14Control of, monitoring of, or safety arrangements for, machines or engines characterised by changing the positions of the inlet or outlet openings with respect to the working chamber using rotating valves

Definitions

  • the present invention relates to a rotary piston internal combustion engine, with an essentially circular cylindrical compression space and one circular cylindrical work space, being in the compression space and in the work space
  • Rotary pistons are arranged, which together around an axis of compression space and work space are rotatable, being in the compression space and in the work space
  • Sliders are provided which are arranged to be movable in the radial direction to lie sealingly on the surface of the respective rotary piston, and being on the circumference a first exhaust opening is provided in the work area.
  • Internal combustion engines after Rotary piston principle are particularly advantageous because they do not have reciprocating pistons have, whereby a quiet run and high speeds can be achieved.
  • a rotary piston internal combustion engine in a partition is arranged through which the working space is separated from the compression space is, and wherein oval rotary pistons are arranged in the compression chamber and work space are that rotate about an axis concentric to the compression space and work space. Compression and drive is achieved in that a substantially radially movable Slide rests sealingly on the surface of the respective rotary piston.
  • the work space is in the expansion ratio of the gas mixture larger than the compression space.
  • Such a rotary piston internal combustion engine is known from DE-A 43 05 669.
  • DE-A 43 05 669 are there a smaller compression space and a larger work space are assigned to the compression and the combustion of the sucked gas mixture and the exhaust of the exhaust gas guarantee.
  • motors of a similar design are, for example, in DE-C 387 287, in DE-C 404 080, in DE-A 14 76 672, in FR-A 2 083 703 or in GB-A 1 469 295 disclosed.
  • the object of the present invention is so the internal combustion engine described above to further develop that a new control for the volume of the work space, an improved Connection control between compression area and work area and an improved Sealing between slide, roller and rotary lobe is possible to ensure optimal operation to realize under different operating conditions.
  • this object is achieved in that further exhaust openings in the work area are provided, which can be closed by exhaust valves, which exhaust valves Can be closed and opened one after the other via an adjusting device.
  • the volume of the working space with further exhaust openings and the exhaust valves connected is essential to the invention that the volume of the working space with further exhaust openings and the exhaust valves connected. Depending on the position of the exhaust valves the effective volume of the work space by closing or opening the further exhaust openings can be enlarged or reduced.
  • the exhaust valves are designed as rotary valves, the Axes are essentially parallel to the axis of the working space and the compression space. In this way, actuation of the exhaust valves is possible in a particularly simple manner.
  • the adjusting device in turn is designed as a rotary slide valve , which is preferably connected to the exhaust valves via driver levers stands. In this way, reliable actuation of the exhaust valves is achieved.
  • a preferred embodiment of the present invention provides that on the outer Exhaust manifold is provided around the circumference of the working space, which is the first exhaust opening connects to the other exhaust ports.
  • connection control valves are designed as rotary slide valves is particularly advantageous are in the connection openings on the partition between the compression space and the work space are arranged, and their axes are substantially radial to the axis of work space and compression space. In this way, the connection control valves are operated possible in a particularly easy manner.
  • driver grooves which preferably via driver with the connection control valves in Connect, on which rotary lobes are provided. This way it becomes a reliable one Actuation of the connection control valves achieves that of the connection control valves are rotatable in two opposite directions by the rotary lobes, and thereby be opened or closed.
  • the two slides carry rollers at their tips that over Contact strips and leaf springs are sealed.
  • the seal between Slider, roller and rotary piston are improved.
  • the sliders are on by the dividing wall and the support disks are guided on both sides, which is particularly important, since during the work cycle relatively large expansion forces act on one side of the burned gas on the slide. This way the wear minimized.
  • FIG. 1 shows a partially sectioned front view of the invention Device
  • Fig. 2 shows a section along line A-A in Fig. 1
  • Fig. 3 shows a partially sectioned end view of the housing
  • Fig. 4 is a partially sectioned end view the connection openings in detail Y in Figure 3 on an enlarged scale
  • the Fig.5 a section of the connection opening along line E-E in Fig. 4
  • Fig. 6 shows a section of the Connection opening along line F-F in Fig. 4
  • Fig. 7 is a partially sectioned right Side view of the housing
  • Fig. 8 is a partially sectioned left side view Section of the housing along line A-A in Fig. 3, Fig.
  • FIGS. 9 is a plan view of the housing, the 10 and 11 views of the cover of the exhaust manifold, FIGS. 12 and 13 views the mounting plate on an enlarged scale, FIGS. 14 and 15 views of the actuating device, 16 to 19 designs of the cover of the compression chamber, FIGS. 20 to 22 designs of the cover of the working space, FIGS. 23 and 24 views of the support disc, 25 to 28 views of the rotary lobes, FIGS. 29 to 34 representations of the Connection control valves on an enlarged scale, wherein Fig. 30 is a section along line A-A in Fig. 29 and Fig. 31 is a section along the line B-B in Fig. 29, and wherein the 33 shows a section along the line A'-A 'in FIG. 32 and FIG.
  • FIG. 34 shows a section along the line B'-B' in FIG Fig. 32 is, Figs. 35 to 37, views of the exhaust valve on an enlarged scale, wherein 36 shows a section along line A "-A" in FIG. 35 and FIG. 37 shows a section along line B "-B" in Fig. 35.
  • the device according to the invention has a substantially cylindrical housing 1 which through a partition 2 into two cylindrical spaces, namely a compression space 3 and a work area 4 is divided. At the front sides, the housing 1 is on the side of the work area 4 by a cover 6 and on the side of the compression chamber 3 by a Cover 5 completed. Cooling fins 1 a are provided on the circumference of the housing 1. in the Compression chamber 3, a rotary piston 7 is rotatably arranged, while in the working chamber 4 Rotary piston 8 is rotatably arranged. The rotary lobes 7 and 8 are on a common one Shaft 11 fixed against rotation. The shaft 11 is low-friction on the roller bearing 11a Lids 5 and 6 stored. An opening 12 serves to receive a not shown Spark plug.
  • a valve housing 9 is provided, which projects essentially radially outwards.
  • a slide housing 10 is provided.
  • each of the slide housings 9, 10 two slides 19 are slidably arranged, which carry rollers 20 at their front end, which roll on the rotary pistons 7, 8.
  • the Contact strips with leaf springs 21 seal the rollers 20 against the slides 19.
  • Support washers 22 and 23 represent the slideways of the slide 19 opposite the partition 2 Lids 5 and 6 of the compression chamber 3 and the work chamber 4, respectively.
  • connection control valves 24 and 24 ' are provided, which are secured in their positions by a cover 25.
  • Each connection control valve 24 and 24 ' is essentially cylindrical and has two drivers 24a, which are actuated by the rotary lobes 7 and 8. This makes connection control valves rotatable in two opposite directions and adjust depending on the position of the rotary lobes 8 and 7 a connection between compression space 3 and work space 4 or interrupt this.
  • connection control valves 24 and 24 ' are shown in detail.
  • the connection control valves 24, 24 ' are constructed identically, but differ only its length, since the connection control valves 24 are made shorter for reasons of space have to.
  • connection openings 29 are, as can be seen from FIGS. 5 and 6, as bores 29b formed, the axis of which is parallel to the partition 2, with the Bore 29b connecting slots 29c go out on both sides of the partition 2 open up.
  • a cut-out 29a is provided in the lower section to provide space for movement to create the pins 24a.
  • a first exhaust opening 26 is always open, via an exhaust manifold 28 and a connector 14 on the cover 30 of the exhaust manifold 28 is connected to the exhaust, not shown. Furthermore, seen in the direction of rotation, after the first exhaust opening 26 further exhaust openings 27 is provided, which extends over an angular range of approximately 90 ° of the circumference of the working space 4 extend. These further exhaust openings 27 also connect the work area 4 with the exhaust manifold 28.
  • exhaust valves 15 arranged, which have a substantially cylindrical structure and are rotatable. Depending on the rotation of the exhaust valve 15, exhaust gas can pass through the exhaust openings 27 or not from the work space 4 into the exhaust manifold 28.
  • Each Exhaust valve 15 has a driver lever 15a, which acts through an annular spring 15b is biased to a retaining pin 15c.
  • the driving lever 15a is, as shown in FIGS. 35 to 37 can be seen, inserted into a bore 15d, which is arranged in an end section 15e is.
  • a recess 15f is in the form of a radially continuous slot, to let the exhaust gases pass through.
  • a mounting plate 16 that supports the exhaust valves 15 leads into the further exhaust openings 27, on the outside of the cover 6 the work space 4 arranged.
  • the holding pins 15c are fastened on the mounting plate 16, and an adjusting device 17 is mounted, which is rotatable about the axis of the shaft 11 and in is in the form of a rotary valve.
  • a Bowden cable 18, with not shown Control devices is also on the mounting plate and the Adjustment device 17 attached.
  • the adjusting device 17 is tensioned by the Bowden cable 18 operated.
  • An annular spring 16e tensions the adjusting device 17 against the pulling direction the Bowden cable 18 before.
  • By rotating the adjusting device 17 in the Counterclockwise direction in Fig. 1 (access of the Bowden cable 18) further exhaust openings 27 are closed one after the other by the rotation of the exhaust valves 15.
  • the exhaust valves 15 are opened one after the other. If all other exhaust openings 27 are closed, the effective volume is largest in the work area. When all other exhaust openings 27 are open, is the volume of the work space is smallest.
  • Fig. 7 shows a side view of the housing 1 with a view of the open Exhaust manifold 28. Here are the first exhaust opening 26 and the other exhaust openings 27 visible.
  • Fig. 9 shows a top view of the cutting guides in the other figures to clarify.
  • the cover 30 of the exhaust duct is shown in detail, the Connection 14 for the exhaust, not shown, can be seen.
  • the mounting plate 16 is drawn out individually.
  • the mounting plate 16 has an opening 16d which defines the center around which those in these figures are not shown adjusting device 17 is rotatable. Is at the same distance from this opening 16d a series of first bores 16a are arranged, which are designed to guide the exhaust valves 15 are. Further bores 16b are used to hold retaining pins that make a stop represent for the driver lever 15a of the exhaust valves 15.
  • a bracket 16c is used for fastening the Bowden cable 18.
  • the adjusting device 17 has an annular sector first web 17a and a second web arranged concentrically thereto 17b.
  • a groove 17c is formed between these webs 17a and 17b.
  • the groove 17c is like this trained that the protruding parts of the exhaust valves 15 can be accommodated in it.
  • a The end region of the groove 17e, 17f or the webs 17a and 17b is designed to be the driver lever 15a of the exhaust valves 15 switch when the end 17e has a corresponding Exhaust valve 15 slides. This causes the individual exhaust valves 15th can be switched one after the other.
  • a bracket 17d is used to attach the Bowden cable.
  • FIGS. 20 to 22 show views of the cover 6 of the work space 4.
  • the support disc 23 and 24 show the shape of the support disc 22.
  • the support disc 23 is of the same type educated.
  • the support disk 22 has a bore 22a for receiving the shaft 11 Slot 22b is provided for guiding the slide 19. Grooves 22c arranged on the circumference are used for the exact positioning of the support disk 22 in the compression chamber 3.
  • the piston 7 is drawn out.
  • the piston is oval and has a bore 7a with a groove 7b for receiving the shaft 11 or one Key, not shown, which represents an anti-rotation device with respect to the shaft 11.
  • a recess 7c and a driving groove 7d which communicates with the outer circumference of the piston 7 and with the drivers 24a of the connection control valves 24, 24 'is engaged.
  • the piston 7 is in the substantially oval, and has the most distant from the bore 7a Section a sliding section 7e.
  • the sliding portion 7e is formed on the outer To seal the circumference of the compression chamber 3.
  • the sealing portion 7e is as Sector-shaped surface formed, the center of which lies in the shaft axis.
  • the rotary piston 8 is analogous to the rotary piston 7 formed, but mirror-symmetrical to it and with dimensions that correspond to the work area 4 are adapted.
  • the bore 8a including keyway 8b, the recess 8c, the Driving groove 8d and the sealing section 8e correspond to the elements with the reference numerals 7a, 7b, 7c, 7d and 7e of the rotary piston 7.
  • the internal combustion engine according to the invention enables the volume of the working space by closing or opening the other exhaust openings after the change the speed and load or the air-fuel ratio of the gas mixture can change that the connection between the compression space and the work space that the seal is easily controlled by the closure or opening of the connection valves between slide, roller and rotary piston by the arrangement of the slide, Abrasive pieces and leaf springs is improved. This makes high performance and an affordable one Exhaust behavior with low exhaust noise in a variety of operating conditions reached.
  • the internal combustion engine of the present invention be carried out with a plurality of compression rooms or work rooms can be arranged offset in the axial direction on a common shaft. Furthermore, it is clear that the internal combustion engine according to the invention, which is shown in the Embodiment has been described as a gasoline engine, also according to the diesel principle can work. In this case the corresponding changes regarding the compression ratio would have to be made be carried out in a manner known to the person skilled in the art. Instead of Spark plug would have to be arranged with an injection nozzle.

Abstract

A rotary piston internal combustion engine comprises a substantially circular-cylindrical compression space (3) and a substantially circular-cylindrical working space (4), rotary pistons (7, 8) which can rotate together about an axis of the compression space (3) and the working space (4), being disposed in the compression space (3) and the working space (4) are slides (19) which are arranged so as to be movable in the radial direction in order to abut sealingly the surface of the respective rotary piston (7, 8). The periphery of the working space has a first exhaust aperture (26). The working space has further exhaust apertures (27) which can be closed by exhaust valves (15) which can be closed and opened successively by means of an adjusting arrangement (17).

Description

Die vorliegende Erfindung betrifft eine Drehkolben-Brennkraftmaschine mit innerer Verbrennung, mit einem im wesentlichen kreiszylindrischen Verdichtungsraum und einem im wesentlichen kreiszylindrischen Arbeitsraum, wobei in dem Verdichtungsraum und in dem Arbeitsraum jeweils Drehkolben angeordnet sind, die gemeinsam um eine Achse von Verdichtungsraum und Arbeitsraum drehbar sind, wobei in dem Verdichtungsraum und in dem Arbeitsraum Schieber vorgesehen sind, die in Radialrichtung beweglich angeordnet sind, um dichtend an der Oberfläche des jeweiligen Drehkolbens anzuliegen, und wobei am Umfang des Arbeitsraumes eine erste Auspufföffnung vorgesehen ist. Brennkraftmaschinen nach dem Drehkolbenprinzip sind besonders vorteilhaft, da diese keine hin und her gehenden Kolben aufweisen, wodurch ein ruhiger Lauf und hohe Drehzahlen erreichbar sind.The present invention relates to a rotary piston internal combustion engine, with an essentially circular cylindrical compression space and one circular cylindrical work space, being in the compression space and in the work space Rotary pistons are arranged, which together around an axis of compression space and work space are rotatable, being in the compression space and in the work space Sliders are provided which are arranged to be movable in the radial direction to lie sealingly on the surface of the respective rotary piston, and being on the circumference a first exhaust opening is provided in the work area. Internal combustion engines after Rotary piston principle are particularly advantageous because they do not have reciprocating pistons have, whereby a quiet run and high speeds can be achieved.

Bei der vorliegenden Erfindung handelt es sich um eine Drehkolben-Brennkraftmaschine, in der eine Trennwand angeordnet ist, durch die der Arbeitsraum zum Verdichtungsraum abgetrennt wird, und wobei im Verdichtungsraum und Arbeitsraum ovale Drehkolben angeordnet sind, die sich um eine zum Verdichtungsraum und Arbeitsraum konzentrische Achse drehen. Verdichtung und Antrieb wird dadurch erreicht, daß ein im wesentlichen radial beweglicher Schieber dichtend an der Oberfläche des jeweiligen Drehkolbens anliegt. Der Arbeitsraum ist im Ausdehnungsverhältnis des Gasgemisches größer als der Verdichtungsraum.In the present invention, it is a rotary piston internal combustion engine, in a partition is arranged through which the working space is separated from the compression space is, and wherein oval rotary pistons are arranged in the compression chamber and work space are that rotate about an axis concentric to the compression space and work space. Compression and drive is achieved in that a substantially radially movable Slide rests sealingly on the surface of the respective rotary piston. The work space is in the expansion ratio of the gas mixture larger than the compression space.

Aus der DE-A 43 05 669 ist eine solche Drehkolben-Brennkraftmaschine bekannt. Dabei sind ein kleinerer Verdichtungsraum und ein größerer Arbeitsraum zugeordnet, um die Verdichtung und die Verbrennung des angesaugten Gasgemisches und den Ausstoß des Abgases zu gewährleisten. Es ist durchaus möglich, solche Drehkolben-Brennkraftmaschinen bei bestimmten Drehzahlen und unter bestimmten Lastverhältnissen bzw. bei bestimmten Luft-Kraftstoff-Verhältnissen in vorteilhafter Weise zu betreiben, ein Problem besteht jedoch darin, daß sich das Volumen des Arbeitsraumes nach der Veränderung der Drehzahlen und Last bzw. nach der Änderung des Luft-Kraftstoff-Verhältnisses nicht verändem läßt. Dabei treten insbesonders zwei nachteilige Effekte auf:Such a rotary piston internal combustion engine is known from DE-A 43 05 669. Are there a smaller compression space and a larger work space are assigned to the compression and the combustion of the sucked gas mixture and the exhaust of the exhaust gas guarantee. It is quite possible to use such rotary lobe internal combustion engines at certain Speeds and under certain load conditions or with certain air-fuel ratios to operate advantageously, but one problem is that the volume of the work space after changing the speed and load or after changing the air-fuel ratio. Kick in particular two adverse effects on:

Bei hoher Drehzahl oder großer Last, bei den mit einem fetten Luft-Kraftstoff-Verhältnis gefahren wird, kann der Ausdehnungsdruck des verbrannten Gases bis zum Öffnen der Auslaßschlitze nicht vollständig ausgenützt werden, so daß Energie durch den Auspuff ungenutzt verloren geht. Dadurch kommt es zu einem relativ großen Brennstoffverbrauch und einem relativ hohen Auspuffgeräusch solcher Motorcn in diesem Betriebszustand.At high speed or high load, driven at a rich air-fuel ratio the expansion pressure of the burned gas until the outlet slots are opened not fully exploited, so that energy is not used by the exhaust get lost. This leads to a relatively large fuel consumption and one relatively high exhaust noise of such engines in this operating state.

Andererseits wäre es im niedrigen Drehzahl- oder Teillastbereich erwünscht, eine frühere Öffnung der Auslaßschlitze zu erreichen, um den Gaswechsel zu beschleunigen und die Verluste zu minimieren. On the other hand, in the low speed or part load range, an earlier one would be desirable To reach opening of the outlet slots to accelerate the gas exchange and the losses to minimize.

Ähnliche Motoren zeigen auch die US 2 091 120, DE-C 817 058, DE-C 822 312 und DE-A 19 31 522. Auch bei solchen Maschinen sind Einlaß- und Auslaßöffnungen nur durch den Drehkolben beeinflußt, wodurch sich ebenfalls die oben beschriebenen Nachteile ergeben.Similar engines also show the US 2 091 120, DE-C 817 058, DE-C 822 312 and DE-A 19 31 522. In such machines, inlet and outlet openings are only through affects the rotary lobe, which also results in the disadvantages described above.

Zwei weitere Nachteile der bekannten Vorrichtungen sind, daß die Drehung der Verbindungsscheibe eine größere Reibung aufweisen, so wie dies in der DE-A 43 05 669, der US-A 2 091 120, der DE-C 817 058 und der DE-C 822 312 gezeigt ist, und daß es ein Abdichtungsproblem zwischen Schieber, Rolle und Drehkolben gibt, insbesonders bei einer Lösung, wie sie in der DE-A 19 31 522 vorgesehen ist.Two further disadvantages of the known devices are that the rotation of the connecting disc have a greater friction, as in DE-A 43 05 669, the US-A 2 091 120, DE-C 817 058 and DE-C 822 312 is shown and that there is a sealing problem between slide, roller and rotary piston, especially with one Solution as it is provided in DE-A 19 31 522.

Weitere Motoren ähnlicher Bauart sind beispielsweise in der DE-C 387 287, in der DE-C 404 080, in der DE-A 14 76 672, in der FR-A 2 083 703 oder in der GB-A 1 469 295 offenbart.Other motors of a similar design are, for example, in DE-C 387 287, in DE-C 404 080, in DE-A 14 76 672, in FR-A 2 083 703 or in GB-A 1 469 295 disclosed.

Aufgabe der vorliegenden Erfindung ist es, die eingangs beschriebene Brennkraftmaschine so weiterzubilden, daß eine neue Steuerung für das Volumen des Arbeitsraumes, eine verbesserte Verbindungssteuerung zwischen Verdichtungsraum und Arbeitsraum und eine verbesserte Abdichtung zwischen Schieber, Rolle und Drehkolben möglich ist, um einen optimalen Betrieb unter verschiedenen Betriebsbedingungen zu realisieren.The object of the present invention is so the internal combustion engine described above to further develop that a new control for the volume of the work space, an improved Connection control between compression area and work area and an improved Sealing between slide, roller and rotary lobe is possible to ensure optimal operation to realize under different operating conditions.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß weitere Auspufföffhungen im Arbeitsraum vorgesehen sind, die durch Auspuffventile verschließbar sind, welche Auspuffventile über eine Verstelleinrichtung nacheinander verschließbar und zu öffnen sind.According to the invention, this object is achieved in that further exhaust openings in the work area are provided, which can be closed by exhaust valves, which exhaust valves Can be closed and opened one after the other via an adjusting device.

Wesentlich an der Erfindung ist, daß das Volumen des Arbeitsraumes mit weiteren Auspufföffnungen und der Auspuffventile zusammenhängt. Je nach Stellung der Auspuffventile kann dabei das wirksame Volumen des Arbeitsraumes durch das Schließen oder das Öffnen der weiteren Auspufföffnungen vergrößert oder verkleinert werden.It is essential to the invention that the volume of the working space with further exhaust openings and the exhaust valves connected. Depending on the position of the exhaust valves the effective volume of the work space by closing or opening the further exhaust openings can be enlarged or reduced.

Besonders vorteilhaft ist es, wenn die Auspuffventile als Drehschieber ausgebildet sind, deren Achsen im wesentlichen parallel zu der Achse von Arbeitsraum und Verdichtungsraum sind. Auf diese Weise ist eine Betätigung der Auspuffventile in besonders einfacher Weise möglich. Insbesonders ist es günstig, wenn die Verstelleinrichtung ihrerseits als Drehschieber ausgebildet ist, die vorzugsweise über Mitnehmerhebel mit den Auspuffventilen in Verbindung steht. Auf diese Weise wird eine zuverlässige Betätigung der Auspuffventile erreicht. In einer bevorzugten Ausführungsvariante der vorliegenden Erfindung ist vorgesehen, daß am äußeren Umfang des Arbeitsraumes ein Auspuffsammelkanal vorgesehen ist, der die erste Auspufföffnung mit den weiteren Auspufföffnungen verbindet.It is particularly advantageous if the exhaust valves are designed as rotary valves, the Axes are essentially parallel to the axis of the working space and the compression space. In this way, actuation of the exhaust valves is possible in a particularly simple manner. In particular, it is expedient if the adjusting device in turn is designed as a rotary slide valve , which is preferably connected to the exhaust valves via driver levers stands. In this way, reliable actuation of the exhaust valves is achieved. In a preferred embodiment of the present invention provides that on the outer Exhaust manifold is provided around the circumference of the working space, which is the first exhaust opening connects to the other exhaust ports.

Besonders vorteilhaft ist es, wenn die Verbindungssteucrventile als Drehschieber ausgebildet sind, die in den Verbindungsöffnungen auf der Trennwand zwischen dem Verdichtungsraum und dem Arbeitsraum angeordnet sind, und deren Achsen im wesentlichen radial zu der Achse von Arbeitsraum und Verdichtungsraum sind. Auf diese Weise ist eine Betätigung der Verbindungssteuerventile in besonders leichter Weise möglich. Insbesonders ist es günstig, wenn die Mitnehmernuten, die vorzugsweise über Mitnehmer mit den Verbindungssteuerventilen in Verbindung stehen, auf den Drehkolben vorgesehen sind. Auf diese Weise wird eine zuverlässige Betätigung der Verbindungssteuerventile erreicht, daß die Verbindungssteuerventile durch die Drehkolben nach zwei entgegengesetzte Richtungen drehbar sind, und dadurch geöffnet oder geschlossen werden.It when the connection control valves are designed as rotary slide valves is particularly advantageous are in the connection openings on the partition between the compression space and the work space are arranged, and their axes are substantially radial to the axis of work space and compression space. In this way, the connection control valves are operated possible in a particularly easy manner. In particular, it is beneficial if the driver grooves, which preferably via driver with the connection control valves in Connect, on which rotary lobes are provided. This way it becomes a reliable one Actuation of the connection control valves achieves that of the connection control valves are rotatable in two opposite directions by the rotary lobes, and thereby be opened or closed.

Besonders vorzugsweise tragen die beiden Schieber an ihrer Spitze Rollen, die über Schleifstücke und Blattfedern abgedichtet sind. Auf diese Weise kann die Abdichtung zwischen Schieber, Rolle und Drehkolben verbessert werden. Die Schieber werden durch die auf der Trennwand und der Stützscheiben eingerichteten Gleitbahnen von beiden Seiten geführt, was insbesonders wichtig ist, da während des Arbeitstaktes relativ große Ausdehnungskräfte des verbrannten Gases einseitig auf den Schieber einwirken. Auf diese Weise wird der Verschleiß minimiert.Particularly preferably, the two slides carry rollers at their tips that over Contact strips and leaf springs are sealed. In this way, the seal between Slider, roller and rotary piston are improved. The sliders are on by the dividing wall and the support disks are guided on both sides, which is particularly important, since during the work cycle relatively large expansion forces act on one side of the burned gas on the slide. This way the wear minimized.

In der Folge wird die Erfindung anhand des in den Figuren dargestellten Ausführungsbeispiels näher erläutert. Es zeigen die Fig. 1 eine teilweise geschnittene Stirnansicht der erfindungsgemäßen Vorrichtung, die Fig. 2 einen Schnitt nach Linie A-A in Fig. 1, die Fig. 3 eine teilweise geschnittene Stirnansicht des Gehäuses, die Fig. 4 eine teilweise geschnittene Stirnansicht der Verbindungsöffnungen im Detail Y in Fig.3 in vergrößertem Maßstab, die Fig.5 einen Schnitt der Verbindungsöffnung nach Linie E-E in Fig. 4, die Fig. 6 einen Schnitt der Verbindungsöffnung nach Linie F-F in Fig. 4, die Fig. 7 eine teilweise geschnittene rechte Seitenansicht des Gehäuses, die Fig. 8 eine teilweise geschnittene linke Seitenansicht vom Schnitt des Gehäuses nach Linie A-A in Fig. 3, die Fig. 9 eine Draufsicht des Gehäuses, die Fig. 10 und 11 Ansichten des Deckels des Auspuffsammelkanals, die Fig. 12 und 13 Ansichten der Montageplatte in vergrößertem Maßstab, die Fig. 14 und 15 Ansichten der Stelleinrichtung, die Fig. 16 bis 19 Ausbildungen des Deckels des Verdichtungsraums, die Fig. 20 bis 22 Ausbildungen des Deckels des Arbeitsraums, die Fig. 23 und 24 Ansichten der Stützscheibe, die Fig. 25 bis 28 Ansichten der Drehkolben, die Fig. 29 bis 34 Darstellungen der Verbindungssteuerventile in vergrößertem Maßstab, wobei die Fig. 30 ein Schnitt nach Linie A-A in Fig. 29 und die Fig. 31 ein Schnitt nach der Linie B-B in Fig. 29 ist, und wobei die Fig. 33 ein Schnitt nach der Linic A'-A' in Fig. 32 und Fig. 34 ein Schnitt nach Linie B'-B' in Fig. 32 ist, die Fig. 35 bis 37 Ansichten des Auspuffventils in vergrößertem Maßstab, wobei die Fig. 36 ein Schnitt nach Linic A"-A" in Fig. 35 und die Fig. 37 ein Schnitt nach Linie B"-B" in Fig. 35 ist.The invention is based on the embodiment shown in the figures explained in more detail. 1 shows a partially sectioned front view of the invention Device, Fig. 2 shows a section along line A-A in Fig. 1, Fig. 3 shows a partially sectioned end view of the housing, Fig. 4 is a partially sectioned end view the connection openings in detail Y in Figure 3 on an enlarged scale, the Fig.5 a section of the connection opening along line E-E in Fig. 4, Fig. 6 shows a section of the Connection opening along line F-F in Fig. 4, Fig. 7 is a partially sectioned right Side view of the housing, Fig. 8 is a partially sectioned left side view Section of the housing along line A-A in Fig. 3, Fig. 9 is a plan view of the housing, the 10 and 11 views of the cover of the exhaust manifold, FIGS. 12 and 13 views the mounting plate on an enlarged scale, FIGS. 14 and 15 views of the actuating device, 16 to 19 designs of the cover of the compression chamber, FIGS. 20 to 22 designs of the cover of the working space, FIGS. 23 and 24 views of the support disc, 25 to 28 views of the rotary lobes, FIGS. 29 to 34 representations of the Connection control valves on an enlarged scale, wherein Fig. 30 is a section along line A-A in Fig. 29 and Fig. 31 is a section along the line B-B in Fig. 29, and wherein the 33 shows a section along the line A'-A 'in FIG. 32 and FIG. 34 shows a section along the line B'-B' in FIG Fig. 32 is, Figs. 35 to 37, views of the exhaust valve on an enlarged scale, wherein 36 shows a section along line A "-A" in FIG. 35 and FIG. 37 shows a section along line B "-B" in Fig. 35.

Die erfindungsgemäße Vorrichtung besitzt ein im wesentlichen zylindrisches Gehäuse 1, das durch eine Trennwand 2 in zwei zylindrische Räume, nämlich einen Verdichtungsraum 3 und einen Arbeitsraum 4 unterteilt ist. An den Stirnseiten ist das Gehäuse 1 auf der Seite des Arbeitsraums 4 durch einen Deckel 6 und auf der Seite des Verdichtungsraums 3 durch einen Deckel 5 abgeschlossen. Am Umfang des Gehäuses 1 sind Kiihlrippen la vorgesehen. Im Verdichtungsraum 3 ist ein Drehkolben 7 drehbar angeordnet, während am Arbeitsraum 4 ein Drehkolben 8 drehbar angeordnet ist. Die Drehkolben 7 und 8 sind auf einer gemeinsamen Welle 11 verdrehfest befestigt. Die Welle 11 ist über Wälzlager 11a reibungsarm auf den Deckeln 5 und 6 gelagert. Eine Öffnung 12 dient zur Aufnahme einer nicht dargestellten Zündkerze. Im Bereich des Verdichtungsraums 3 ist ein Schiebergehäuse 9 vorgesehen, das im wesentlichen radial nach außen vorragt. In analoger Weise ist im Bereich des Arbeitsraums 4 ein Schiebergehäuse 10 vorgesehen. Ein Anschluß 13, der mit dem nicht weiter dargestellten Vergaser in Verbindung steht, ist am äußeren Umfang des Verdichtungsraums vorgesehen.The device according to the invention has a substantially cylindrical housing 1 which through a partition 2 into two cylindrical spaces, namely a compression space 3 and a work area 4 is divided. At the front sides, the housing 1 is on the side of the work area 4 by a cover 6 and on the side of the compression chamber 3 by a Cover 5 completed. Cooling fins 1 a are provided on the circumference of the housing 1. in the Compression chamber 3, a rotary piston 7 is rotatably arranged, while in the working chamber 4 Rotary piston 8 is rotatably arranged. The rotary lobes 7 and 8 are on a common one Shaft 11 fixed against rotation. The shaft 11 is low-friction on the roller bearing 11a Lids 5 and 6 stored. An opening 12 serves to receive a not shown Spark plug. In the area of the compression chamber 3, a valve housing 9 is provided, which projects essentially radially outwards. The same applies to the work area 4 a slide housing 10 is provided. A connection 13 with the not shown Carburetor is connected, is provided on the outer periphery of the compression chamber.

In jedem der Schiebergehäuse 9, 10 sind jeweils zwei Schieber 19 verschiebbar angeordnet, die an ihrem vorderen Ende Rollen 20 tragen, die auf den Drehkolben 7, 8 abrollen. Die Schleifstücke mit Blattfedem 21 dichten die Rollen 20 gegenüber den Schiebern 19 ab. Stützscheiben 22 und 23 stellen die Gleitbahnen der Schieber 19 gegenüber der Trennwand 2 den Deckeln 5 bzw. 6 des Verdichtungsraums 3 bzw. des Arbeitsraums 4 dar.In each of the slide housings 9, 10, two slides 19 are slidably arranged, which carry rollers 20 at their front end, which roll on the rotary pistons 7, 8. The Contact strips with leaf springs 21 seal the rollers 20 against the slides 19. Support washers 22 and 23 represent the slideways of the slide 19 opposite the partition 2 Lids 5 and 6 of the compression chamber 3 and the work chamber 4, respectively.

In die Verbindungsöffnungen 29, die in der Trennwand 2 zwischen dem Verdichtungsraum 3 und dem Arbeitsraum 4 geöffnet sind, sind Verbindungssteuerventile 24 bzw. 24' vorgesehen, die durch einen Deckel 25 in ihren Stellungen gesichert werden. Jedes Verbindungssteuerventil 24 bzw. 24' ist im wesentlichen zylindrisch aufgebaut und besitzt zwei Mitnehmer 24a, die von den Drehkolben 7 und 8 betätigt werden. Dadurch sind Verbindungssteuerventile nach zwei entgegengesetzten Richtungen drehbar und stellen je nach Stellung der Drehkolben 8 bzw. 7 eine Verbindung zwischen Verdichtungsraum 3 und Arbeitsraum 4 her bzw. unterbrechen diese.In the connection openings 29, which are in the partition 2 between the compression space 3 and the working space 4 are open, connection control valves 24 and 24 'are provided, which are secured in their positions by a cover 25. Each connection control valve 24 and 24 'is essentially cylindrical and has two drivers 24a, which are actuated by the rotary lobes 7 and 8. This makes connection control valves rotatable in two opposite directions and adjust depending on the position of the rotary lobes 8 and 7 a connection between compression space 3 and work space 4 or interrupt this.

In den Fig. 29 bis 34 sind die Verbindungssteuerventile 24 bzw. 24' detailliert dargestellt. Im Prinzip sind die Verbindungssteuerventile 24, 24' gleichartig aufgebaut, unterschiedlich ist nur ihre Länge, da aus Platzgründen die Verbindungssteuerventile 24 kürzer ausgebildet sein müssen. Die Verbindungssteuerventile 24, 24' bestehen jeweils aus einem im wesentlichen zylindrischen Körper 24b, 24b' mit einer Durchgangsöffnung 24c, 24c' und einer abgewinkelten Bohrung 24d, 24d', die durch den Mittelpunkt des Querschnitts hindurchgeht. In diese Bohrung 24d, 24d' sind zwei Mitnehmer 24a eingesetzt, die in den Fig. 1 und 2 dargestellt sind.29 to 34, the connection control valves 24 and 24 'are shown in detail. in the In principle, the connection control valves 24, 24 'are constructed identically, but differ only its length, since the connection control valves 24 are made shorter for reasons of space have to. The connection control valves 24, 24 'each consist essentially of one cylindrical body 24b, 24b 'with a through opening 24c, 24c' and an angled Bore 24d, 24d 'that passes through the center of the cross section. In these Bore 24d, 24d 'two drivers 24a are used, which are shown in FIGS. 1 and 2 are.

Die Verbindungsöffnungen 29 sind, wie dies aus den Fig. 5 und 6 ersichtlich ist, als Bohrungen 29b ausgebildet, deren Achse parallel zur Trennwand 2 ist, wobei von beiden Seiten der Bohrung 29b Verbindungsschlitze 29c ausgehen, die sich auf beide Seiten der Trennwand 2 hin öffnen. Im unteren Abschnitt ist eine Ausfräsung 29a vorgesehen, um Raum für die Bewegung der Stifte 24a zu schaffen.The connection openings 29 are, as can be seen from FIGS. 5 and 6, as bores 29b formed, the axis of which is parallel to the partition 2, with the Bore 29b connecting slots 29c go out on both sides of the partition 2 open up. A cut-out 29a is provided in the lower section to provide space for movement to create the pins 24a.

Am äußeren Umfang des Arbeitsraums 4 ist eine stets geöffnete erste Auspufföffnung 26 vorgesehen, die über einen Auspuffsammelkanal 28 und einen Anschluß 14 auf dem Deckel 30 des Auspuffsammelkanals 28 mit dem nicht weiter dargestellten Auspuff in Verbindung steht. Weiters sind in Drehrichtung gesehen nach der ersten Auspufföffnung 26 weitere Auspufföffnungen 27 vorgesehen, die sich über einen Winkelbereich von etwa 90° des Umfangs des Arbeitsraums 4 erstrecken. Diese weiteren Auspufföffnungen 27 verbinden ebenso den Arbeitsraum 4 mit dem Auspuffsammelkanal 28. In den weiteren Auspufföffnungen 27 sind Auspuffventile 15 angeordnet, die einen im wesentlichen zylindrischen Aufbau aufweisen und drehbar sind. Je nach Drehung des Auspuffventils 15 kann Abgas durch die Auspufföffnungen 27 vom Arbeitsraum 4 in den Auspuffsammelkanal 28 hindurchtreten oder nicht. Jedes Auspuffventil 15 besitzt einen Mitnehmerhebel 15a, der durch die Wirkung einer Ringfeder 15b zu einem Haltestift 15c vorgespannt ist. Der Mitnehmerhebel 15a ist, wie dies in den Fig. 35 bis 37 ersichtlich ist, in eine Bohrung 15d eingesetzt, die in einem Endabschnitt 15e angeordnet ist. Eine Ausnehmung 15f ist in der Form eines radial durchgängigen Schlitzes ausgebildet, um die Auspuffgase hindurchtreten zu lassen. Eine Montageplatte 16, die die Auspuffventile 15 in die weiteren Auspufföffnungen 27 führt, wird auf der Außenseite des Deckels 6 des Arbeitsraums 4 angeordnet. Auf der Montageplatte 16 sind die Haltestifte 15c befestigt, und es ist eine Verstelleinrichtung 17 montiert, die um die Achse der Welle 11 drehbar und in der Form eines Drehschiebers ausgebildet ist. Ein Bowdenzug 18, der mit nicht weiter dargestellten Steuereinrichtungen in Verbindung steht, wird auch auf der Montageplatte und der Verstelleinrichtung 17 befestigt. Die Verstelleinrichtung 17 wird durch den gespannten Bowdenzug 18 betätigt. Eine Ringfeder 16e spannt die Verstelleinrichtung 17 gegen die Zugrichtung des Bowdenzuges 18 vor. Durch die Drehung der Verstelleinrichtung 17 in der Richtung gegen den Uhrzeigersinn in der Fig. 1 (Zugriff des Bowdenzuges 18) werden die weiteren Auspufföffnungen 27 durch die Drehung der Auspuffventile 15 nacheinander geschlossen. In einem entgegengesetzten Fall werden die Auspuffventile 15 nacheinander geöffnet. Falls alle weiteren Auspufföffnungen 27 geschlossen werden, ist das wirksame Volumen des Arbeitsraumes am größten. Wenn alle weiteren Auspufföffnungen 27 geöffnet sind, ist das Volumen des Arbeitsraumes am kleinsten.On the outer circumference of the working space 4, a first exhaust opening 26 is always open, via an exhaust manifold 28 and a connector 14 on the cover 30 of the exhaust manifold 28 is connected to the exhaust, not shown. Furthermore, seen in the direction of rotation, after the first exhaust opening 26 further exhaust openings 27 is provided, which extends over an angular range of approximately 90 ° of the circumference of the working space 4 extend. These further exhaust openings 27 also connect the work area 4 with the exhaust manifold 28. In the other exhaust openings 27 are exhaust valves 15 arranged, which have a substantially cylindrical structure and are rotatable. Depending on the rotation of the exhaust valve 15, exhaust gas can pass through the exhaust openings 27 or not from the work space 4 into the exhaust manifold 28. Each Exhaust valve 15 has a driver lever 15a, which acts through an annular spring 15b is biased to a retaining pin 15c. The driving lever 15a is, as shown in FIGS. 35 to 37 can be seen, inserted into a bore 15d, which is arranged in an end section 15e is. A recess 15f is in the form of a radially continuous slot, to let the exhaust gases pass through. A mounting plate 16 that supports the exhaust valves 15 leads into the further exhaust openings 27, on the outside of the cover 6 the work space 4 arranged. The holding pins 15c are fastened on the mounting plate 16, and an adjusting device 17 is mounted, which is rotatable about the axis of the shaft 11 and in is in the form of a rotary valve. A Bowden cable 18, with not shown Control devices is also on the mounting plate and the Adjustment device 17 attached. The adjusting device 17 is tensioned by the Bowden cable 18 operated. An annular spring 16e tensions the adjusting device 17 against the pulling direction the Bowden cable 18 before. By rotating the adjusting device 17 in the Counterclockwise direction in Fig. 1 (access of the Bowden cable 18) further exhaust openings 27 are closed one after the other by the rotation of the exhaust valves 15. In an opposite case, the exhaust valves 15 are opened one after the other. If all other exhaust openings 27 are closed, the effective volume is largest in the work area. When all other exhaust openings 27 are open, is the volume of the work space is smallest.

Die Fig. 7 zeigt eine seitliche Ansicht des Gehäuses 1 mit einem Blick auf den geöffneten Auspuffsammelkanal 28. Dabei sind die erste Auspufföffnung 26 und die weiteren Auspufföffnungen 27 sichtbar.Fig. 7 shows a side view of the housing 1 with a view of the open Exhaust manifold 28. Here are the first exhaust opening 26 and the other exhaust openings 27 visible.

Die Fig. 9 stellt eine Ansicht von oben dar, um die Schnittführungen in den übrigen Figuren zu verdeutlichen.Fig. 9 shows a top view of the cutting guides in the other figures to clarify.

In den Fig. 10 und 11 ist der Deckel 30 des Auspuffkanals detailliert dargestellt, wobei der Anschluß 14 für den nicht dargestellten Auspuff ersichtlich ist.10 and 11, the cover 30 of the exhaust duct is shown in detail, the Connection 14 for the exhaust, not shown, can be seen.

In den Fig. 12 und 13 ist die Montageplatte 16 einzeln herausgezeichnet. Die Montageplatte 16 besitzt eine Öffnung 16d, die den Mittelpunkt definiert, um den die in diesen Figuren nicht dargestellte Verstelleinrichtung 17 drehbar ist. In gleichem Abstand zu dieser Öffnung 16d ist eine Reihe von ersten Bohrungen 16a angeordnet, die zum Führen der Auspuffventile 15 ausgebildet sind. Weitere Bohrungen 16b dienen zur Aufnahme von Haltestiften, die einen Anschlag für die Mitnehmerhebel 15a der Auspuffventile 15 darstellen. Eine Halterung 16c dient zur Befestigung des Bowdenzuges 18.12 and 13, the mounting plate 16 is drawn out individually. The mounting plate 16 has an opening 16d which defines the center around which those in these figures are not shown adjusting device 17 is rotatable. Is at the same distance from this opening 16d a series of first bores 16a are arranged, which are designed to guide the exhaust valves 15 are. Further bores 16b are used to hold retaining pins that make a stop represent for the driver lever 15a of the exhaust valves 15. A bracket 16c is used for fastening the Bowden cable 18.

Die Verstelleinrichtung 17 weist, wie dies in den Fig. 14 und 15 ersichtlich ist, einen kreisringsektorförmigen ersten Steg 17a und einen konzentrisch dazu angeordneten zweiten Steg 17b auf. Zwischen diesen Stegen 17a und 17b ist eine Nut 17c gebildet. Die Nut 17c ist so ausgebildet, daß die vorspringenden Teile der Auspuffventile 15 in ihr Aufnahme finden. Ein Endbereich der Nut 17e, 17f bzw. der Stege 17a und 17b ist dazu ausgebildet, die Mitnehmerhebel 15a der Auspuffventile 15 umzuschalten, wenn das Ende 17e über ein entsprechendes Auspuffventil 15 gleitet. Dadurch wird bewirkt, daß die einzelnen Auspuffventile 15 nacheinander umgeschaltet werden. Eine Halterung 17d dient zur Befestigung des Bowdenzuges.As can be seen in FIGS. 14 and 15, the adjusting device 17 has an annular sector first web 17a and a second web arranged concentrically thereto 17b. A groove 17c is formed between these webs 17a and 17b. The groove 17c is like this trained that the protruding parts of the exhaust valves 15 can be accommodated in it. A The end region of the groove 17e, 17f or the webs 17a and 17b is designed to be the driver lever 15a of the exhaust valves 15 switch when the end 17e has a corresponding Exhaust valve 15 slides. This causes the individual exhaust valves 15th can be switched one after the other. A bracket 17d is used to attach the Bowden cable.

Die Fig. 16 bis 19 zeigen verschiedene Ansichten des Deckels 5, des Verdichtungsraumes 3 und die Fig. 20 bis 22 zeigen Ansichten des Deckels 6 des Arbeitsraumes 4.16 to 19 show different views of the cover 5, the compression space 3 and FIGS. 20 to 22 show views of the cover 6 of the work space 4.

Die Fig. 23 und 24 zeigen die Form der Stützscheibe 22. Die Stützscheibe 23 ist gleichartig ausgebildet. Die Stützscheibe 22 besitzt eine Bohrung 22a zur Aufnahme der Welle 11. Ein Schlitz 22b ist zur Führung der Schieber 19 vorgesehen. Am Umfang angeordnete Nuten 22c dienen zur genauen Positionierung der Stützscheibe 22 im Verdichtungsraum 3.23 and 24 show the shape of the support disc 22. The support disc 23 is of the same type educated. The support disk 22 has a bore 22a for receiving the shaft 11 Slot 22b is provided for guiding the slide 19. Grooves 22c arranged on the circumference are used for the exact positioning of the support disk 22 in the compression chamber 3.

In den Fig. 25 und 26 ist der Pumpenkolben 7 herausgezeichnet. Der Kolben ist oval ausgebildet und besitzt eine Bohrung 7a mit einer Nut 7b zur Aufnahme der Welle 11 bzw. einer nicht näher dargestellten Paßfeder, die eine Verdrehsicherung in Bezug auf die Welle 11 darstellt. In einem Hauptteil des Kolbens 7 sind eine Ausnehmung 7c und eine Mitnehmernut 7d, die mit dem äußeren Umfang des Kolbens 7 in Verbindung steht und die mit den Mitnehmern 24a der Verbindungssteuerventile 24, 24' in Eingriff steht, vorgesehen. Der Kolben 7 ist im wesentlichen oval ausgebildet, und besitzt an dem von der Bohrung 7a am weitesten entfernten Abschnitt einen Gleitabschnitt 7e. Der Gleitabschnitt 7e ist dazu ausgebildet, am äußeren Umfang des Verdichtungsraumes 3 dichtend anzuliegen. Der Dichtungsabschnitt 7e ist als kreissektorförmige Fläche ausgebildet, deren Mittelpunkt in der Wellenachse liegt. Auf diese Weise kann eine gute Dichtwirkung erzielt werden. Der Drehkolben 8 ist analog zum Drehkolben 7 ausgebildet, jedoch spiegelsymmetrisch dazu und mit Abmessungen, die an den Arbeitsraum 4 angepaßt sind. Die Bohrung 8a samt Paßfedernut 8b, die Ausnehmung 8c, die Mitnehmernut 8d und der Dichtabschnitt 8e entsprechen den Elementen mit den Bezugszeichen 7a, 7b, 7c, 7d bzw. 7e des Drehkolbens 7.25 and 26, the pump piston 7 is drawn out. The piston is oval and has a bore 7a with a groove 7b for receiving the shaft 11 or one Key, not shown, which represents an anti-rotation device with respect to the shaft 11. In a main part of the piston 7 there are a recess 7c and a driving groove 7d, which communicates with the outer circumference of the piston 7 and with the drivers 24a of the connection control valves 24, 24 'is engaged. The piston 7 is in the substantially oval, and has the most distant from the bore 7a Section a sliding section 7e. The sliding portion 7e is formed on the outer To seal the circumference of the compression chamber 3. The sealing portion 7e is as Sector-shaped surface formed, the center of which lies in the shaft axis. To this A good sealing effect can be achieved in this way. The rotary piston 8 is analogous to the rotary piston 7 formed, but mirror-symmetrical to it and with dimensions that correspond to the work area 4 are adapted. The bore 8a including keyway 8b, the recess 8c, the Driving groove 8d and the sealing section 8e correspond to the elements with the reference numerals 7a, 7b, 7c, 7d and 7e of the rotary piston 7.

Die erfindungsgemäße Brennkraftmaschine ermöglicht, daß sich das Volumen des Arbeitsraumes durch die Schließung oder Öffnung der weiteren Auspufföffnungen nach der Veränderung der Drehzahlen und Last bzw. nach dem Luft-Kraftstoff-Verhältnis des Gasgemisches verändern kann, daß die Verbindung zwischen dem Verdichtungsraum und dem Arbeitsraum durch die Schließung oder Öffnung der Verbindungsventile leicht gesteuert wird, daß die Abdichtung zwischen Schieber, Rolle und Drehkolben durch die Anordnungen der Schieber, Schleifstücke und Blattfedern verbessert wird. Dadurch wird eine hohe Leistung und ein günstiges Abgasverhalten mit einem niedrigen Auspuffgeräusch in einer Vielzahl von Betriebszuständen erreicht.The internal combustion engine according to the invention enables the volume of the working space by closing or opening the other exhaust openings after the change the speed and load or the air-fuel ratio of the gas mixture can change that the connection between the compression space and the work space that the seal is easily controlled by the closure or opening of the connection valves between slide, roller and rotary piston by the arrangement of the slide, Abrasive pieces and leaf springs is improved. This makes high performance and an affordable one Exhaust behavior with low exhaust noise in a variety of operating conditions reached.

Es ist für den Fachmann offensichtlich, daß die Brennkraftmaschine der vorliegenden Erfindung mit einer Mehrzahl von Verdichtungsräumen bzw. Arbeitsräumen ausgeführt werden kann, indem diese auf einer gemeinsamen Welle in Axialrichtung versetzt angeordnet werden. Weiters ist es klar, daß die erfindungsgemäße Brennkraftmaschine, die in dem dargestellten Ausführungsbeispiel als Ottomotor beschrieben worden ist, ebenso nach dem Dieselprinzip arbeiten kann. In diesem Falle müßten die entsprechenden Änderungen betreffend das Verdichtungsverhältnis in einer dem Fachmann bekannten Art ausgeführt werden. Anstelle der Zündkerze wäre eine Einspritzdüse anzuordnen.It will be apparent to those skilled in the art that the internal combustion engine of the present invention be carried out with a plurality of compression rooms or work rooms can be arranged offset in the axial direction on a common shaft. Furthermore, it is clear that the internal combustion engine according to the invention, which is shown in the Embodiment has been described as a gasoline engine, also according to the diesel principle can work. In this case the corresponding changes regarding the compression ratio would have to be made be carried out in a manner known to the person skilled in the art. Instead of Spark plug would have to be arranged with an injection nozzle.

Claims (9)

  1. A rotary piston IC engine with internal combustion, with a substantially circular-cylindrical compression chamber (3) and a substantially circular-cylindrical working chamber (4), with rotary pistons (7, 8) each being arranged in the compression chamber (3) and in the working chamber (4), which pistons are jointly rotatable about an axis of the compression chamber (3) and the working chamber (4), with slide valves (19) being provided in the compression chamber (3) and in the working chamber (4) which are movably arranged in the radial direction in order to rest in a sealing manner on the surface of the respective rotary piston (7, 8) and with a first exhaust opening (26) being provided on the circumference of the working chamber, characterized in that further exhaust openings (27) are provided in the working chamber, which openings can be closed by exhaust valves (15), which valves can be closed and opened successively by way of an adjusting device (17).
  2. A rotary piston IC engine as claimed in claim 1, characterized in that the exhaust valves (15) are arranged as rotary slide valves whose axes extend substantially parallel to the axis of the working chamber (4) and compression chamber (3).
  3. A rotary piston IC engine as claimed in claim 1 or 2, characterized in that the adjusting device (17) is arranged as a rotary slide valve.
  4. A rotary piston IC engine as claimed in claim 1 or 2, characterized in that the adjusting device (17) arranged as a rotary slide valve is in connection with the exhaust valves (15) by way of driving levers (15a).
  5. An internal combustion engine as claimed in one of the claims 1 to 4, characterized in that the adjusting device (17) can be actuated through a Bowden cable (18).
  6. A rotary piston IC engine as claimed in one of the claims 1 to 5, characterized in that an exhaust collecting conduit (28) is provided on the outer circumference of the working chamber (4), which conduit connects the first exhaust opening (26) with the further exhaust openings (27).
  7. A rotary piston IC engine as claimed in one of the claims 1 to 6, characterized in that two slide valves (19) each are slidingly held in a slide valve housing (9, 10) and that they carry rollers (20) at their tip which are sealed by way of sliding elements (21) and leaf springs.
  8. A rotary piston IC engine as claimed in one of the claims 1 to 7, characterized in that connection control valves (24, 24') are arranged between the compression chamber (3) and working chamber (4), which valves are opened and closed by the rotary piston (7, 8).
  9. A rotary piston IC engine as claimed in claim 8, characterized in that the connection control valves (24, 24') are provided with drivers (24a) which engage in a driving slot of the rotary pistons (7d, 8d).
EP97917929A 1996-05-06 1997-04-30 Rotary piston internal combustion engine Expired - Lifetime EP0897458B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT805/96 1996-05-06
AT80596 1996-05-06
AT80596 1996-05-06
PCT/AT1997/000085 WO1997042398A1 (en) 1996-05-06 1997-04-30 Rotary piston internal combustion engine

Publications (2)

Publication Number Publication Date
EP0897458A1 EP0897458A1 (en) 1999-02-24
EP0897458B1 true EP0897458B1 (en) 1999-10-27

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EP97917929A Expired - Lifetime EP0897458B1 (en) 1996-05-06 1997-04-30 Rotary piston internal combustion engine

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US (1) US6349696B1 (en)
EP (1) EP0897458B1 (en)
JP (1) JP3831414B2 (en)
CN (1) CN1095026C (en)
AT (1) ATE186100T1 (en)
AU (1) AU2626197A (en)
DE (1) DE59700632D1 (en)
ES (1) ES2137783T3 (en)
WO (1) WO1997042398A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003006794A1 (en) 2001-07-07 2003-01-23 Dougherty Thomas J Radial internal combustion engine with floating balanced piston
US6886527B2 (en) * 2003-03-28 2005-05-03 Rare Industries Inc. Rotary vane motor
FR2911631A1 (en) * 2007-01-19 2008-07-25 Philippe Kuzdzal Rotary engine e.g. spark ignition engine, for thermal-electric hybrid car, has semi-cylindrical segment holding part including segments with contact zones that are contacted with enclosure situated on both sides of axis of housing

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR510945A (en) * 1914-03-11 1920-12-14 Otto Bracker Rotary machine
DE387287C (en) 1921-06-01 1923-12-27 Carl Martens Expansion device for rotary piston machines with reversing
DE404080C (en) 1923-03-20 1924-10-11 Albert Wellmann Reversal for machines with rotating pistons that can be moved radially in the piston drum
US2248639A (en) 1935-01-04 1941-07-08 Miksits Reinhold Rotary piston machine
US2091120A (en) 1935-04-25 1937-08-24 Norton W Kinney Internal combustion engine
DE822312C (en) 1948-12-12 1951-11-26 Otto Schumann Internal combustion rotary piston engine
DE817058C (en) 1948-12-12 1951-10-15 Otto Schumann Sealing of internal combustion rotary piston engines with abutment slides
DE1476672C3 (en) 1965-12-22 1973-11-15 Barth, Harald, Dr.-Ing., 6680 Neunkirchen Parallel and internal-axis pneumatic rotary piston prime mover
FR2083703A5 (en) 1970-03-03 1971-12-17 Bon Maurice
US3921594A (en) 1973-04-03 1975-11-25 Robert Douglas Lampard Internal combustion engines
CN1022772C (en) * 1992-05-16 1993-11-17 丑毅 Combined impeller rotary engine
DE4305669A1 (en) * 1993-02-24 1994-08-25 Miao Hua Elliptical rotary internal combustion engine
US5709188A (en) * 1993-12-09 1998-01-20 Al-Qutub; Amro Heat engine
US5501586A (en) * 1994-06-20 1996-03-26 Edwards; Thomas C. Non-contact rotary vane gas expanding apparatus
US5596963A (en) * 1995-08-14 1997-01-28 Lai; Jui H. Stage combustion rotary engine

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Publication number Publication date
DE59700632D1 (en) 1999-12-02
CN1095026C (en) 2002-11-27
ES2137783T3 (en) 1999-12-16
JP3831414B2 (en) 2006-10-11
AU2626197A (en) 1997-11-26
CN1211299A (en) 1999-03-17
US6349696B1 (en) 2002-02-26
WO1997042398A1 (en) 1997-11-13
JP2000509459A (en) 2000-07-25
EP0897458A1 (en) 1999-02-24
ATE186100T1 (en) 1999-11-15

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