INTERNAL COMBUSTION ENGINE
The internal combustion engine in includes at least one compression chamber b*, formed by a housing 10/10′ and therein compressor rotary pistons 1 rotating on a shaft with compressor sealing strips 11, on which optionally movable toggle sealing strips 4 are arranged. The compression chamber is in gas connection with at least one ignition chamber 7 and this ignition chamber is in gas connection with at least one expansion chamber c*. This chamber is formed by the housing 10/10′ and by an expansion rotary piston 2 rotating in this chamber on a shaft. An at least one flywheel 3 rotating in the housing 10/10′ on a shaft provided for the power transfer together with the compressor rotary piston 1 forms a compression chamber b* and together with the expansion rotary piston 2 forms an expansion chamber c*. The ignition chamber 7 is equipped with a device for igniting a compressed gas mixture.
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The invention is related to an internal combustion engine on the basis of “rotary pistons”, resp., on the basis of disc-shaped components of a certain design rotating on an axis and functionally corresponding with one another for the compression and expansion of combustion gases.
In the case of engines of this type, the clean compression is the crucial point between the combustion and the expansion supplying power. Because rotary piston engines comprise significantly higher speeds of rotation than, for example, the Otto engines with piston—connecting rod—crankshaft, but have the same ignition sequence, resp., working cycles, and because the compression volume is much smaller than in the case of piston engines (by a factor of 10 to 20), these engines so-to-say are more delicate with respect to the course over time of the working steps, suction intake, compression, ignition and expansion.
The implementation of short to extremely short gas paths, i.e., short conduits between the working cycle units, is an important requirement. The compression has to take place in an extremely short time and practically free of losses, for which purpose a special design of the gas compressing unit, therefore of the compressor, is necessary. For the expansion, in case of short gas paths the arrangement and the design of the ignition chamber has to fulfil the requirement of the short time sequence and the arrangement of the elements for the working cycles, namely suction intake, compression, ignition and expansion, have to be adapted to these requirements.
An engine of this type in various embodiments is the object of the invention, the features of which are defined in the claims.
BRIEF SUMMARY OF THE INVENTIONOne problem for the translation of these requirements is the complete deviation of the design from conventional rotary piston engines. For some embodiments there is no following of designs that are already present.
A first embodiment of the rotary piston engine in accordance with the invention includes two working rotary pistons, which operate with a common flywheel. The flywheel has different functions; it is an inertia buffer and energy store to the transmission path, it is also a sealing organ to the compression—and expansion chambers and it is a shut-off device in connection with the sealing of the working rotary pistons. These are the compressor rotary piston and the expansion rotary piston. The working rotary piston and the flywheel are positively synchronised through a gearing. This engine per revolution of the flywheel twice works-off the classical working cycles of the Otto engine, namely suction intake—compression—ignition—expansion.
A further embodiment is an engine in accordance with the invention, which in addition to the embodiment described above includes two further working rotary pistons (compressor rotary piston and expansion rotary piston), which operate with the same one flywheel. With this, the cycles of the working cycles, suction intake—compression—ignition—expansion, are doubled, i.e., the engine works four times the classical working cycles per revolution of the flywheel, resp., per revolution of the drive shaft to the transmission.
A further embodiment of the engine comprises a reduction of the number of working cycles per revolution, in that the working rotary pistons (compression and expansion) each operate with its own flywheel, wherein the equal high compression is necessary, however, because of the reduced number of working cycles per revolution of the drive shaft, this engine is capable of being brought to significantly higher speeds of rotation.
A further embodiment, a variant of the last mentioned engine, operates with an additional suction intake stage, formed by a working rotary piston and a flywheel for the pre-compression, in case of very high speeds of rotation.
In the following discussion, the principle of the new rotary piston engine in accordance with the invention is presented. Primarily discussed are the essential elements and their function. Some components are solely schematically represented, such as, e.g., the electric ignition device. Not represented are devices for the cooling (in principle a casing for the circulation of the cooling fluid), also not represented is the carburettor device, resp., the injection device (in principle a conventional device) and also not represented are any exhaust gas conduits to the extent that they do not immediately concern the engine activity.
The engine, in essence, comprises three working components, a compressor rotary piston 1, an expansion rotary piston 2 and a flywheel 3 working together with both rotary pistons. The two working rotary pistons 1 and 2 opposite one another at 180 (angle) degrees each comprise two sealing strips 11 and 21. The flywheels opposite one another at 180 degrees comprise two correspondingly shaped recesses 31, in which during rotation the sealing strips are able to dip in and roll-off. Between the sealing strips and the (not depicted in this Figure) housing chambers are formed, which through the movement of the sealing strips in the direction of rotation are variably reducing in size for compression and increasing in size for the expansion. More about this further below.
Viewed form the ‘front’, the two working rotary pistons 1 and 2 rotate in clockwise direction, the flywheel 3 rotates counter-clockwise. This is indicated with arrows. The position of the sealing strips 11 and 21 facing one another in
The details in
The toggle sealing strip 4, which, because movable, adapts itself smoothly to the chamber surface in the housing, is illustrated in
In the
For the further overview the three
Here, an example for the design of the ignition chamber: In the discussed embodiment it comprises a height/width of 10×10 mm and a length of 60 mm, which corresponds to a volume of 6 cm3. It is milled into the housing with an end milling cutter. The inlet bore into the ignition chamber comprises a diameter of 6 mm and the outlet bore into the expansion chamber also comprises a diameter of 6 mm. Both bores are built into the housing. In case of a compression of 10 bar, a gas volume of around 60 cm3 is aspirated and compressed in the ignition chamber. Following the combustion and expansion this corresponds to a gas volume of approx. 240 cm3. In the area of the inlet bore, a non-return valve is arranged or else in a recess in the combustion chamber above the inlet bore a one-way flutter valve, both not depicted, wherein during the ignition of the mixture the expanding gas at the moment of the aligned gas passages the expanding gas is not capable of passing into the clearance between the housing and the rotary piston and from there into the compression chamber. Housing 10 and rotary piston 1 in addition are sealed with, for example, one or two ring seals 8. These are precautions, in order to achieve a maximum compression.
The
Due to the presence of the housing, now also the circular ring-shaped chambers 19 for compression and for expansion 20 as well as for suction aspiration 17 are visible. The chambers for the purpose of explaining the function, further down are designated with a, b, b* and c, c*d, wherein the chambers b und b* are separated by a block S1 and the chambers c and c* by a block S2. One, furthermore, is able to see, how the pendulum seal 5 is arranged in the housing 10. It is drawn as so large that it just about has space in the housing, this in order to be able to depict details, as a rule, however, it is somewhat smaller in diameter. The pendulum seal in the illustrated embodiment is encompassed by the housing to such an extent, that it so-to-say ‘floating’ on an oil film is movable around its longitudinal axis, therefore does not require an axis for holding it.
The
The
The chambers b* and b, through the contact of the expansion rotary pistons with the flywheel, are separated into a smaller part b* and into a larger part b. The contact point produces a block S1 sealed-off by an oil film between the two parts. The chambers c* and c through the contact of the expansion rotary pistons with the flywheel are also separated, into a smaller part c* and into a larger part c. The contact point produces a block S2 between the two parts. The partial circle-shaped chambers in this embodiment comprise a volume of around 80 cm3. During the rotation this volume is compressed to approx. 10 cm3 in the ignition chamber. Per revolution twice and at 10,000 rpm, these are not very fast turning rotary piston engines, but in the case of the mentioned speed of rotation, the aspiration—compression—ignition—expansion takes place around 167 times per second for two Otto engine ignition sequences, in other words, one ignition sequence each respectively within around 3 milliseconds.
In the chambers a, the compression begins (when one starts to rotate after the ignition of the gas mixture), the chambers begin to aspirate. The chamber c* experiences expansion and from the chambers d and c the combusted ignition mixture is exhausted through the exhaust gas channels 33 and 34. The chambers c* and c through the contact of the expansion rotary pistons with the flywheel are separated into two parts, into a smaller one c* and into a larger part c. The contact point, as mentioned, produces a block between the two parts. The smaller part c* is connected with the outlet bore of the ignition chamber and is subjected to the expansion pressure. The larger chamber c still contains expanded combustion gas, which, however, would be compressed at the block. In order to prevent this, the outlet 33 is provided. It has to be observed, that the designation of the chambers is only a temporary one, as in the case of a snapshot.
The position of the rotary pistons indicates the approximate moment of the ignition and expansion. The sealing strip 11 with the toggle sealing strip 4 on the compressor rotary piston 1 and 1′ has pushed the compressed ignition mixture through a, for example, one-way flutter valve (not indicated) into the ignition chamber and now dips into the recess 31 in the flywheel 3. The one-way flutter valve, comprises, for example, a springy steel plate arranged above the inlet aperture into the ignition chamber, for example, as it is utilised in 2-stroke engines. The expansion sealing strip 21 on the expansion rotary pistons 2 and 2′ now have just emerged from the recess in the flywheel and are ready to be driven upwards (resp., downwards) by the expansion through the exploding ignition mixture. The chamber above the sealing strip begins to exhaust combusted gas through the short exhaust gas channel 33, this also in the chamber c below the second sealing strip, where the expanded smoke is exhausted through the long exhaust gas channel 34. The two small chambers b* at the end of the compression and the beginning of the expansion c* have to be extremely well sealed against one another, in order that the compressed gas (here through the paper plane) is pressed into the ignition chamber and that after ignition has taken place the expansion does not spread into the compression chamber. Serving this purpose is the pendulum seal 5, which by the adjustment device 6, for example, depicted in
The
Serving for the illustration of the engine housing alone are the
A further embodiment is illustrated in the
The
A further embodiment is illustrated in the
The
In summary, an internal combustion engine in accordance with the invention comprises at least one compression chamber a, b/b* formed by a housing 10/10′ and therein compressor rotary pistons 1, 1′ rotating on a shaft with movable toggle sealing strips 4 arranged on compressor sealing strips 11 in a gas connection with at least one ignition chamber 7 and through these in a gas connection at least one expansion chamber formed by the housing 10, 10′ and therein expansion rotary pistons 2, 2′ rotating on a shaft with expansion sealing strips, wherein an at least one flywheel 3 rotating in the housing 10, 10′ on a shaft 18 provided for the power transfer with recesses 31 for receiving the compressor sealing strips and expansion sealing strips 11,21 of the rotary pistons together with the compressor rotary piston 1, 1′ forms a compression chamber a, b, b* and with the expansion rotary piston 2, 2′ an expansion chamber d, c, c* and in the housing part 10 a pendulum seal 5 with contact with the flywheel is arranged, and the ignition chamber 7 is equipped with a device for the ignition 13, 13* 16 of a gas mixture in the ignition chamber compressed through the compression chamber.
The new construction of the internal combustion engine comprises a compression chamber a, b/b* formed by a housing 10/10′, and on it compressor rotary pistons 1, 1′ rotating on a first shaft with compressor sealing strips 11 in gas connection with at least one ignition chamber 7 and through this in gas connection an expansion chamber d, c, c* formed by the housing 10, 10′ and therein rotating on a second shaft expansion rotary pistons 2 with expansion sealing strips 21, wherein a rotating flywheel 3 in the housing 10, 10′ on a third shaft 18 provided for the power transfer with recesses 31 for receiving the sealing strips 11, 21 of the rotary pistons together with the compressor rotary piston 1 through a first block S1 forms compression chambers a, b, b* and with the expansion rotary piston 2 through a second block S2 forms expansion chambers d, c, c* and the ignition chamber 7 is equipped with a device for the ignition 13, 13*, 16 of a gas mixture in the ignition chamber compressed through the compression chamber, wherein the working rotary pistons 1 and 2, and the flywheel 3 each respectively comprise an own axis/shaft 26, 27 and 32.
Still capable of being assigned to this new arrangement are a pair of working rotary pistons each respectively with an own axis/shaft, which act on the same flywheel.
In case of the new construction of the engine, irrespective of which embodiment, it is immediately evident, that this engine essentially runs on oil films and that the continuous oil supply is minimal (drop by drop), because it is built in such a manner, that the oil film also has a sealing effect and as a result of this is extremely thin. It is therefore not comparable with the conventional construction, in particular with respect to piston engines, although the aspiration—ignition—expansion sequence is the same.
LIST OF DESIGNATION NUMBERS
- 1 Compressor rotary piston
- 2 Expansion rotary piston
- 3 Flywheel with blocking effect to the rotary pistons
- 4 Toggle sealing strip
- 5 Pendulum seal
- 6 Press-on device for pendulum seal
- 7 Ignition chamber
- 8 Sealing grooves on the front side of the compressor rotary piston
- 9 Bore for the press-on device for the pendulum seal
- 10 Housing, base plate 10′ (together the housing)
- 11 Compressor sealing strip
- 12 Gearing (synchronisation) of the working rotary pistons
- 13 Ignition plug
- 14 Cover of the ignition chamber/seat for ignition plug
- 15 Flange for carburettor, 15′ inlet for the ignition mixture
- 16 Electric ignition device (for ignition plug)
- 17 Aspiration chamber
- 18 Shaft for power transfer from the flywheel
- 19 Compressor—or compression chamber
- 20 Expansion chamber
- 21 Expansion sealing strip
- 22 Outlet grooves on the expansion rotary piston
- 23 Receiving aperture on the pendulum seal
- 24 Flange on the base plate 10′
- 25 Flange screws
- 26 Axis/shaft for compressor rotary piston
- 27 Axis/shaft for expansion rotary piston
- 28 Compressor bore
- 29 Transfer bore
- 30 Inlet bore into the ignition chamber
- 31 Flywheel sealing strip receptacle, flywheel recess
- 32 Axis/shaft for flywheel
- 33 Exhaust gas channels, short
- 34 Exhaust gas channels, long
- a Aspiration chamber
- b Compression chambers b* and b
- c Expansion chambers c* and c
- d Expansion chamber
- E Inlet for the ignition mixture
- A Exhaust for the combustion gas
- S1 Block on the compressor rotary piston
- S2 Block on the expansion rotary piston
Claims
1. Internal combustion engine comprising:
- at least one compression chamber (a, b/b*) formed by a housing (10/10′) and therein: compressor rotary pistons rotating on a shaft (1, 1′) with movable toggle sealing strips (4) arranged on compressor sealing strips (11)
- wherein the compression chamber is in gas connection with at least one combustion chamber (7), and through this at least one expansion chamber is in gas connection, the expansion chamber formed by the housing (10, 10′) and therein: expansion rotary pistons (2, 2′) rotating on a shaft with expansion sealing strips (21),
- wherein at least one flywheel (3) rotating in the housing (10, 10′) on the shaft provided for the power transfer (18) with recesses (31) for receiving the compressor sealing strips and expansion sealing strips (11, 21) of the rotary pistons is provided and together with the compressor rotary piston (1, 1′) forming a compression chamber (a, b, b*) and with the expansion rotary piston (2, 2′) an expansion chamber (d, c, c*) and
- arranged in the housing part (10) a pendulum seal (5) with contact to the flywheel, and the ignition chamber (7) is equipped with a device for the ignition (13, 13*, 16) of a compressed gas mixture conducted into the ignition chamber through the compression chamber.
2. Internal combustion engine in accordance with claim 1, comprising:
- a compression chamber (a, b/b*), formed by a housing (10/10′) and therein: compressor rotary pistons (1,1′) rotating on a first shaft with movable toggle sealing strips (4) arranged on compressor sealing strips (11) in gas connection with at least one ignition chamber (7)
- and through this at least one expansion chamber (d, c, c*) in gas connection, the expansion chamber formed by the housing (10, 10′), and therein: expansion rotary pistons (2) rotating on a second shaft with expansion sealing strips (21),
- wherein in the housing (10, 10′) a flywheel (3) rotating on a third shaft (18) is provided for the power transfer with recesses (31) for receiving the compressor sealing strips and expansion sealing strips (11, 21) of both rotary pistons and together with the compressor rotary piston (1, 1′) through a first block (S1) forms compression chambers (a, b, b*) with the expansion rotary piston (2, 2′) through a second block (S2) forms expansion chambers (d, c, c*) and
- in the housing part (10) between the larger first compression chamber part (b*) formed by the first block (S1) and the smaller expansion chamber part (c*) formed by the second block a pendulum seal (5) with contact with the flywheel is arranged, and
- the ignition chamber (7) is provided with a device for the ignition (13, 13*, 16) of a gas mixture conducted into the ignition chamber through the compression chamber.
3. Internal combustion engine in accordance with claim 1, comprising:
- a compression chamber (a, b/b*), formed by a housing (10/10′) and therein: rotating on a first shaft compressor rotary pistons (1, 1′) with movable toggle sealing strips (4) arranged on compressor sealing strips (11)
- the compression chamber is in gas connection with a first ignition chamber (7) and through it in gas connection with a first expansion chamber (d, c, c*), the first expansion chamber formed by the housing (10, 10′) and therein: rotating on a second shaft expansion rotary pistons (2,) with expansion sealing strips (21),
- as well as a second compression chamber (a, b/b*), formed by a housing (10/10′) and therein: rotating on a third shaft compressor rotary pistons (1, 1′) with movable toggle compressor sealing strips (4) arranged on compressor sealing strips (11′)
- the second compression chamber is in gas connection with a second ignition chamber (7) and through it in gas connection with a second expansion chamber (d, c, c*), formed by the housing (10, 10′) and therein: rotating on a fourth shaft expansions rotary pistons (2′) with expansions sealing strips (21′),
- wherein in the housing (10, 10′) on a fifth shaft (18) provided for the force transfer a rotating flywheel (3) with recesses (31) for receiving the sealing strips (11, 21; 11′, 21′) of both pairs of rotary pistons (1, 2; 1′, 2′) is provided and together with the two compressor rotary pistons (1, 1′) compression chambers (a, b, b*) each respectively formed through first blocks (S1, S1′) and with the two expansion rotary pistons (2, 2′) expansion chambers (d, c, c*) each respectively formed through second blocks (S2, S2′) and in the housing part (10) between the smaller compression chamber parts (b*, b*′) formed by the first blocks (S1, S1′) and the smaller expansion chamber parts (c*, c*′) formed by the second blocks (S2, S2′) a pendulum seal (5) in contact with the flywheel (3) is arranged, and the ignition chambers (7) are equipped with a device for the ignition (13, 13*, 16) of a compressed gas mixture conducted into the ignition chamber through the compression chamber.
4. Internal combustion engine in accordance with claim 1, comprising:
- a compression chamber (a, b/b*) formed by a housing (10/10′)and therein: rotating on a first shaft compressor rotary pistons (1, 1′) with movable toggle sealing strips (4) arranged on compressor sealing strips (11) (4)
- the compression chamber in gas connection with an ignition chamber (7) and through this in gas connection an expansion chamber (d, c, c*),
- the expansion chamber formed by the housing (10, 10′) and therein: rotating on the same shaft expansion rotary pistons (2) with expansion sealing strips (21),
- wherein in the housing (10, 10′) rotating on a second shaft (18) provided for the power transfer rotating flywheels (3) with recesses (31) for receiving the compressor sealing strips and expansion sealing strips (11, 21) each respectively of a rotary piston are provided and together with the compressor rotary piston (1, 1′) through a first block (S1) form compression chambers (a, b, b*) and with the expansion rotary piston (2, 2′) through a second block (S2) form expansion chambers (d, c, c*) and in the housing part (10) with the compressor rotary piston (1) a pendulum seal (5) in contact with the flywheel is arranged, and the ignition chamber (7) is equipped with a device for the ignition (13, 13*, 16) of a compressed gas mixture conducted into the ignition chamber through the compression chamber.
5. Internal combustion engine in accordance with claim 4, wherein on the shaft with the working rotary pistons (1 and 2), a third working rotary piston (35) is arranged and on the shaft with the two flywheels a third flywheel (3) is provided, which works together with the working rotary piston for forming a pre-compression stage.
6. Internal combustion engine comprising:
- a compression chamber (a, b/b*) formed by a housing (10/10′) and therein: rotating on a first shaft compressor rotary pistons (1, 1′) with compressor sealing strips (11)
- the compression chamber in gas connection with at least one ignition
- chamber (7) and through this in gas connection with an expansion chamber (d, c, c*) formed by the housing (10, 10′) and therein: rotating on a second shaft expansion rotary pistons (2) with expansion sealing strips (21),
- wherein in the housing (10, 10′) on a third shaft (18) provided for the power transfer rotating flywheels (3) with recesses (31) for receiving the sealing strips (11, 21 ) of the rotary pistons are provided and together with the compressor rotary piston (1) through a first block (S1) compression chambers (a, b, b*) and with the expansion rotary piston (2) through a second block (S2) expansion chambers (d, c, c*) are formed and the ignition chamber (7) is equipped with a device for the ignition (13, 13*, 16) of a compressed gas mixture conducted into the ignition chamber through the compression chamber.
7. Internal combustion engine comprising:
- a first compression chamber (a, b/b*), formed by a housing (10/10′) and therein: rotating on a first shaft compressor rotary pistons (1, 1′) with compressor sealing strips (11)
- the compression chamber in gas connection with a first ignition chamber (7) and through this first expansion chamber in gas connection (d, c, c*),
- the first expansion chamber formed by the housing (10, 10′) and therein: rotating on a second shaft expansion rotary pistons (2, 2′) with expansion sealing strips (21),
- as well as a second compressor chamber (a, b/b*), formed by a housing (10/10′) and therein: rotating on a third shaft compressor rotary pistons (1, 1′) with compressor sealing strips (11′)
- the second compression chamber in gas connection with a second ignition chamber (7′) and through this in gas connection with a second expansion chamber (d, c, c*), formed by the housing (10, 10′) and therein: rotating on a fourth shaft expansion rotary pistons (2′) with expansion sealing strips (21′),
- wherein in the housing (10, 10′) on a fifth shaft provided for the power transfer (18) rotating flywheels (3) with recesses (31) for receiving the compressor sealing strips and expansion sealing strips (11, 21; 11′, 21′) of both pairs of rotary pistons (1, 2; 1′, 2′) are provided and together with the two compressor rotary pistons (1,1′) each respectively forming a compression chamber (a, b, b*) and with the two expansion rotary pistons (2, 2′) each respectively forming an expansion chamber (d, c, c*)
- and the ignition chambers (7) are equipped with a device for the ignition (13, 13*, 16) of a compressed gas mixture conducted into the ignition chamber through the compression chamber.
8. Internal compression engine in accordance with claim 1, wherein the engine housing (10) comprises a recess for receiving the pendulum seal (5) in such a manner, that the pendulum seal is freely movable therein.
9. Internal combustion engine in accordance with claim 8, wherein the pendulum seal (5) in the recess is rotatable around its longitudinal axis.
10. Internal combustion engine in accordance with claim 9, wherein the pendulum seal (5) comprises a receiving aperture (23) for the applying of a press-on device (6).
11. Internal combustion engine in accordance with claim 10, wherein the receiving aperture (23) is constructed as eccentric to the longitudinal axis, so that the press-on device (6), in case of pressure, is capable of exerting a rotary movement on the pendulum seal (5).
12. Internal combustion engine in accordance with claim 11, when the press-on device (6) comprises a pin capable of being placed into the receiving aperture (23), which is supported on a helical spring and the helical screw is supported on an adjusting screw.
13. Internal combustion engine in accordance with claim 12, wherein the press-on device (6) is conducted to the pendulum seal (5) through the housing of the internal combustion engine and by means of a thread in the housing is adjustable by it corresponding to the adjusting screw.
14. Internal combustion engine in accordance with claim 1, wherein the compressor rotary piston (1, 1′) and the expansion rotary piston (2,2′) per rotary piston (1, 1′; 2, 2′) each respectively comprise two sealing strips (11, 11′; 21, 21′) opposite one another and radially projecting towards the housing wall (10) for forming a compression chamber (19), resp., an expansion chamber (20).
15. Internal combustion engine in accordance with claim 14, wherein the sealing strips are formed on the rotary piston.
16. Internal combustion engine in accordance with claim 1 wherein the compression sealing strips (11, 11′) radially projecting on the compressor rotary piston (1, 1′) towards the housing wall for forming an increasingly sealed compression chamber (a, b/b*) comprise a movable sealing strip (4, 4′) at the end facing away from the compressor rotary piston.
17. Internal combustion engine in accordance with claim 16, wherein the toggle sealing strip (4) is arranged on the compressor sealing strip (11, 11′) as capable of rotating/tilting (axis).
18. Internal combustion engine in accordance with claim 17, wherein the toggle sealing strip (4) comprises a stop on the sealing strip (11, 11′) and is arranged in such a manner, that it is capable of lifting-off in the direction of rotation/tilting.
19. Internal combustion engine in accordance with claim 1, wherein the working rotary pistons (1, 1′; 2, 2′) and the flywheel (3, 3′) are supported on their own axis/shaft (26, 27, 32), which for their part respectively are supported as capable of rotating on a splittable housing (10, 10′).
20. Internal combustion engine in accordance claim 4, wherein the working rotary pistons (1, 2) are arranged on a common axis/shaft (26, 27) and that the flywheels (3) assigned to the working rotary pistons are also arranged on a common axis/shaft (32).
21. Internal combustion engine in accordance with claim 4, wherein a flywheel (3) is assigned to every working rotary piston (1, 2).
22. Internal combustion engine in accordance with claim 2, wherein a flywheel (3) is assigned to a plurality of working rotary pistons (1, 1′; 2, 2′).
23. Internal combustion engine in accordance with claim 2, wherein to a flywheel (3) two working rotary pistons (1, 2), namely a compressor rotary piston (1) and an expansion rotary piston (2) are assigned.
24. Internal combustion engine in accordance with claim 3, wherein to a flywheel (3) four working rotary pistons (1, 2; 1′, 2′), namely to each respectively a compressor rotary piston (1, 1′) and an expansion rotary piston (2, 2′) are assigned in such a manner, that respectively a compressor rotary piston (1, 1′) and an expansion rotary piston (2, 2′) adjacently act on a flywheel recess (31).
25. Internal combustion engine in accordance with claim 2, wherein in the engine housing (10, 10′), between a compressor rotary piston (1,1′) and an expansion rotary piston (2, 2′), a pendulum seal (5, 5′) is arranged in such a manner, that it forms a sealing lock at the transition to these two rotary pistons.
26. Internal combustion engine in accordance with claim 2, wherein per pair of compressor rotary piston (1,1′) and expansion rotary piston (2, 2′) working together, a pendulum seal (5,5′) is arranged.
27. Internal combustion engine in accordance with claim 1, wherein the chambers (a, b, b*) formed by the sealing strips and housings on the expansion rotary piston (1,1′) comprise bores (33, 34) leading away from the chamber for the outlet of combustion gases.
28. Internal combustion engine in accordance with claim 2, wherein the angle between the axis (32) of the flywheel and the axes of a pair of working rotary pistons (26, 27) amounts to less than 90 degrees.
29. Internal combustion engine in accordance with claim 28, wherein the axes comprise an angle of 70 to 80 degrees.
30. Internal combustion engine in accordance with claim 1, wherein the compressor rotary piston (1, 1′) is laterally sealed against the housing wall (10, 10′) with a ring seal (8).
31. Internal combustion engine in accordance with claim 1, wherein the compressor rotary piston chamber (19) is connected directly through an ignition chamber (7) with the expansion rotary piston chamber (20).
32. Internal combustion engine in accordance with claim 1, wherein through the ignition mixture preparation (15) (carburettor) the ignition mixture is directly introduced into the compressor rotary piston chamber (19) on the aspiration side.
33. Internal combustion engine in accordance with claim 1, wherein the engine comprises a compression chamber (b*) of variable size between the sealing strip, rotary piston, housing and flywheel (squeeze chamber).
34. Internal combustion engine in accordance with claim 2, wherein the ignition chamber (7) is formed into the housing and comprises a longitudinal cover plate (14), which simultaneously serves for attaching the ignition plug (13).
Type: Application
Filed: Dec 5, 2007
Publication Date: Jan 28, 2010
Applicants: (Erlensee), (Zizers)
Inventor: Peter K.A. Hruschka (Erlensee)
Application Number: 12/518,700
International Classification: F01C 19/00 (20060101);