DE102014003740A1 - Rotary engine - Google Patents

Abstract

In this rotary piston machine, DKM, a motor solution is presented, which offers a high energy density. In zig solutions of a real rotary motor (1) with orbiting outer piston, piston (5), it is possible here, the full work of expanding gases on a over the entire angle of rotation in the combustion chamber (13) running force transmission process with a nearly maximum constant lever arm in To convert torque. The sealing solutions explained here, such as the adjustments required in this specification for the engine version DKM, are valid as significant technical innovations. In particular, the lateral co-rotating discs (2) are to be named in claim 1, through which the piston only between the discs (2) performs a translational up and down movement, which necessarily limits the sealing problems substantially. In particular, there is an answer to the question of a rapid combustion of the piston, which always revolves with a constant revolution. This injection method, which due to the special design requirements as in its system sequence with very good mixing of injected air and fuel leads to an intensive and thus complete combustion in this DKM, which can also be controlled in a timely manner with today's means.

Description

State of the art

Rotary piston engines (DKM) are documented in a dozen different ways in a variety of ways, such as patented (see comparative figures 1, 5). It is interesting, as often described, the significantly better reduction of the pressures from the hot gas pressure acting on radially orbiting pistons and thus by an almost constantly with maximum lever arm on the axis of rotation ( 1a ) acting pressure force from the gas pressure curve. Thus, almost the maximum maximum torque output over the entire rotational angle of the combustion chamber ( 13 ) reached. The most circular working rotor (AR, 1 ) has one or more pistons ( 5 ) and there are one or more combustion chambers ( 13 ) with straight, circular or radially known clothoid-like configurations of the outer orbit, of course depending on the number of combustion chambers ( 13 ), which can be provided with large diameters certainly with more than one or two (shown here in the exemplary drawing, only systemic). Compression is done separately on the same wave next to the AR ( 1 ) Beid- or arranged on one side or on another shaft parallel in the same plane of rotation, the custom-fit Kompressionszuarbeit is accomplished by synchronously running gears or timing belt. When using a folding piston ( 5 ) is, however, the generation of the necessary compression of the combustion air in the AR ( 1 ) under the folding piston ( 5 ) The compression transfer from this or special compression rotors, drawing 3, 4, takes place by means of the circumstances adapted as short as possible transfer solutions with or without valves, depending on the need or intentionally required system control by means of an electronic or mechanical device. And yet, none of these engine solutions can be found on the market today. This is mainly due to the existing sealing problems in almost all of the concepts presented to date. With this patent solutions are presented, which are so or similar determined to solve these problems or at least to a large extent limit, so that it is meant to finally bring this structurally known in parts solution using the additional solutions presented here to use can. In this case, the claim can essentially relate only to an innovation in the construction, which severely limits the sealing problems. See solution statements like claims.

Task and solution

Side windows left and right of the rotor and firmly connected to it By the use of a left as right with the rotor (AR, 1 ) firmly connected circular disc ( 2 ), which are larger in diameter than the rotary engine plus at least the height of the combustion chamber ( 13 ) is designed in one or more combustion chambers ( 13 ) retracting folding pistons ( 5 ) loaded laterally sealing only on a translational movement and not at high speeds (m / sec) radially around the motor housing wall grinding. This releases the stress of the lateral seal ( 14 ) serious. Drawing 1, 5, 6.

Lateral sealing strip on the piston to the lateral sealing disc

In addition to all the many known seals such as sealing strips, straight, tortuous, etc., here at the piston edge ( 14a ) also a special sealing strip ( 14 ) conceivable that the piston ( 5 ) laterally, Figure 6, below. So she can one or more times with webs in the piston edge ( 14a ) and additionally via the combustion-facing wall of the piston ( 5 ) gripping externally by the combustion pressure against the wall pressed for almost a complete seal. This sealing strip ( 14 ) can then also two or more cams on the disc ( 2 ) facing lateral edge of the piston ( 5b ) to have. This still makes it loose but spring or gas pressure supported on the piston ( 5 ) positioned sealing strip ( 14 ) the translational up and down movement on the smooth wall of the side window ( 2 ) with, s. Drawing 1 u. 6. Through the oil supply of all seals described below, this seal ( 14 ) is easily supplied with oil by means of the constant translational reciprocation of the piston, whereby additionally the finest oil passages can serve for this necessary lubrication.

Upper seal on the piston head ( 5e ) on the radial and tangential circulation surface of the outer combustion chamber boundary ( 13a )

The sealing work at this critical point, where a maximum rotational speed additionally provides for a possibly high centrifugal contact pressure, the following solutions are presented here. A fundamental advantage results from the proposed solution of a radial circulation for the upper piston edge (s), which is composed largely by circular arcs or clothoids or similar transitions between different circular arc segments. In such a solution, s. Drawing 1 u. 2, is the spread angle to be covered for the sealing solution on the piston head ( 5e ) <approx. + 30 °. (Compared to the situation in the Wankel engine, between about -60 ° over 0 ° to + 60 °, a great advantage.While this Wankel solution is not to be compared with the presented here - it would therefore be at Wankel from negative to positive Reliable sealing work on the circular moving work limitation of Brennraumes be spoken! The problems that have arisen are known, and the results of the research must be given high tariffs.) This is well known. In addition to the known sealing strip solutions, the following is presented here:
Funnel-shaped pressure redirection ( 17 ) of the combustion pressure against the pressure direction from the combustion against the piston ( 5 ). At the folding piston ( 5e ), as well as in the translatorisch moving sides of the piston used, is a wide trumpet opening ( 17 ) on the combustion chamber facing piston surface ( 5 ), that an inverted trumpet-like pressure guide after a nearly 180 ° descriptive deflection of the gas pressure acting on the piston directly on the piston head ( 5e ) or side wall ( 2 ) ends there against the general gas pressure direction exits. This is done directly on the piston head ( 5e ) or side window ( 2 ) reaches almost a 0-pressure situation of the gas pressure. Then, in addition, by means of a whirling technique or roller or the like, similar to one or more grooves of the other, in front of the gas pressure wall of the continuous piston ( 5 ) on the piston head ( 5e ) to the envelope towards the sealing work can be increased, s. Fig. 6 The piston ( 5 ) at this point at the outermost pressure-facing groove or on the roller, etc. are supplied with low oil, since the piston in the interior of the rotor ( 1 ) is supplied with oil as is cooled, so even with a centrifugal forces free piston ( 5 ) a little lubrication at this point are available.

Positively controlled piston ( 12 ) with movable sealing lip ( 19 )

The with rotating side windows ( 2 ) allow by their limitation of the combustion chamber ( 13 ) to the housing interior ( 23 ) that through the side window ( 2 ) Aggregates in this gap ( 23 ) to the outer housing ( 3 ) of the motor. This possibility allows simple means z. B. a forced operation ( 12 ) of the folding piston ( 5 ) in a curved path ( 12 ) on the outer housing ( 3 ) or by means of similar devices z. B. synchronous or asynchronous planetary gear ( 33 ) with connecting rod ( 34 ) to the folding piston ( 5 ) around a stationary pole gear ( 32 ) depending on the combustion chamber envelope ( 13a ) with a small but precise distance driving around for her ups and downs, s. Zchg. 1, 2 u. 5. Although this significantly increases the number of moving parts in this engine, which can actually be produced with just a few parts, it gives a control advantage. A moving nose, lip ( 21 ), then can take over the residual sealing work, in addition to the centrifugal force z. B. the above-mentioned "funnel-shaped pressure redirection" ( 17 ) for constant concern of the lip ( 3 ). With the lip length of the desired pressure can be determined pressure-dependent. (The figures 5 and 6 for this only indicate the systematics, without scale.) Since the housing interior ( 23 ) is guided with oil, a necessary lubrication of such moving structures is given here.

Circular side window edge seal ( 15 . 15a ) against housing

With several free rotating circular non-contact vortex seals ( 15 ) in the side window ( 2 ) at its outer boundary or the enclosing housing ( 3 ), s. Drawing 1 u. 5, the pressure can be limited, then z. B. on the outside of the disc ( 2 ) with likewise circular grinding but oil-supported seal (s) ( 15a ) completely or even by itself sealed by this abrasive oil-based solution. The gap ( 23 ) between the rotating side window ( 2 ) and the housing ( 3 ) is oil-accompanied similar to that of the piston engine and thus the seal ( 15a ). Also the inner sealing work in the range of 0 ° (see teeth 5: 0 ° and 180 °) at the between the side windows ( 2 ) drawn down combustion chamber boundary ( 13a ), during the passage of the piston ( 5 ) into the combustion chamber ( 13 ) can be similarly alone with oil-based seals ( 15a ), because there is oil, s. Drawing 5.

Seal at 0 ° and 180 °

After passing the piston ( 5 ) at the exhaust system ( 8th ) over into the combustion chamber ( 13 ), the separation of the two areas of course with known in the earlier patent solutions (grinder slide, spring-assisted lip, flat folding piston on the housing, etc.). Here is a solution using the "funnel-shaped pressure redirection" ( 17 ) in a positively guided perpendicular to the rotor ( 1 ) aligned slide ( 6 ) or segment pistons ( 4 ) in addition to other well-known, as mentioned before, Zchng. 1 u. 5. With positively driven pistons ( 5 u. 6 as 4 ) a non-contact change of the piston circulation to the exhaust zone ( 8th ) in the loading zone at the beginning of the combustion chamber ( 13 ) are achieved so that both moving parts are deliberately separated by a few mm, as in the range 0 ° / 180 ° nothing happens and only shortly thereafter the piston ( 5 ) to the combustion chamber boundary ( 13a ) once like the slider ( 6 or 4 ) to the AR ( 1 ) must be brought in sealing. In addition, with this procedure, an earlier and thus higher expansion of the combustion chamber ( 13 ) in order to be able to convert their highest pressures into torque at the very beginning of combustion via a piston that has been extended as far as possible.

Side window ( 2 ) As a flywheel, carrier for electric solutions, carriers for aggregates such as cams u. Ä. to the system control

The two side windows ( 2 ) will have to be designed with a certain width / mass in order to also meet the design requirements of the seals to the sealing requirements such as system guides. That benefits this engine solution very much. The rotating rotor ( 1 ) thus receives significantly more external mass, which in turn has a positive effect on the circulation as a rotating mass moment of inertia. With a straight extension or angled widening positioned at the outer edge ( 16 ) of the side window ( 2 ), this effect can be amplified electrotechnical solutions by the incorporation of magnets ( 25 ), shown here by way of example, Fig. 5 top left. On the case can then z. B. a winding ring ( 26 ), or vice versa, which provides an electric motor and / or generator solution. So can be dispensed with a starter like an alternator, and also the use of the electric motor for pure electric travel - ie without combustion by binding the piston ( 5 ) on the rotor ( 1 ) - as can be done in a mixed operation as well as only for charging operation during pure combustion work. By the binding of the pistons ( 5 ) in the rotor ( 1 ) in pure electric driving operation, there is no decoupling of the two systems, combustion work and / or electric drive.

Cooling:

With such an energy-tight solution compared to the piston engine, cooling will be of great importance in measuring. The construction volume of such a DKM's compared to a piston engine by a factor> 3 is lower, which must be clearly reflected in the heat development at the same power.

Air cooling:

Air cooling is possible.

Liquid cooled solution:

A sufficient cooling of the housing ( 3 ) by means of liquids is in corresponding -. As well as opposing - cooling channels easy to do and state of the art. For internal cooling of the AR ( 1 ) offers a partially open breakthrough ( 7 ) through the discs like the rotor ( 1 u 2 ), in which even the piston (s) ( 5 ) are cooled by the oil during their movement in addition to the heat quantity removal from the entire AR ( 1 ). For this purpose, oil is laterally in this partially open interior of the AR ( 1 ) injected. The hot oil gets back out of the AR by the rotation 1 ) and can be stored in a pump sump ( 20 ) give off its heat at the bottom of the machine or transport it via an additional oil cooling system (oil-air exchanger or similar) by means of an oil pump to reach the required temperature reduction.

Utilization of the waste heat via coolant / cold gas for conversion into a refrigerant gas relaxation device, here probably a rotary piston engine, to increase the torque

From patent DE 10 2004 05 468.1 (same holder as applicant here) a pump or motor is known whose excellent properties similar to those intended here correspond. This rotary lobe pump, DKP, is particularly suitable - in addition to the use of other, eg. B. a cellular compressor with reverse action - the resulting heat surplus by means of the relaxation of the hot refrigerant gas as heat transfer medium also convert into torque. This DKP - here as a motor - would be on the same axis as the AR ( 1 ) as possibly the necessary compressor ( 24 ) work. Thus, almost all introduced in the engine energy (Joule) can be converted into torque when the relaxed, so cold, suitable for this purpose refrigerant gas z. B. via exchange tubes in the pump sump ( 20 ) like the housing ( 3 ) starting the engine, the housing ( 3 ) cooling continuously over the exhaust gas duct ( 8th ) heated then the DKP o. Ä. Supplied by means of relaxation in rotational power converted the work yield at the shaft significantly increased and on the other side cools down. Then the engine can even be heat-sealed to prevent further energy losses to the ambient air.

For this consideration is pointed out here also to a serious disadvantage of the DKM's. Combustion would best perform its thermo-theoretical unfolding / work in a sphere, but that is difficult to harness. This is a piston engine with a stroke close to the piston diameter relatively close, so that the combustion proceeds close to an optimal measured in terms of technical feasibility and still low the yield. This can not be achieved in any way with a DKM by design. With the piston engine we can i. d. R. go out with a piston stroke / piston diameter ratio of near 1: 1. With the DKM, the ratio of combustion chamber height is: -width: length, for example, in the range from: 1: 2 to 4: 3 to 8 This gives significantly higher surfaces of the combustion chamber compared to the piston engine, which inevitably leads to a higher heat exchange across the walls Cooling condition. Also for this reason, the above-described technical overhead of a consequent cooling gas cooling offers.

Injection, increasing efficiency

In an effort to achieve a very good combustion in the combustion work with finest atomization, it has resorted to the means to use very high pressures; s. Pump-nozzle or common-rail injection (1200 to 3000 bar), which led to a significantly better atomization compared to the previously known injection pump (up to 200 bar). Due to the constant rotation of a DKM - ie also at the 0-point of its start of operation - an even finer dissolution of the fuel at its initiation to the firing phase would be desirable. This is shown as an example in addition to the named methods, drawing 1. By the separation of injection, <200 bar pressure, in a hot pre-chamber ( 10 ) and a delayed expulsion therefrom by means of a piston ( 10a ) at the time of the transfer of the compression (eg 35 bar) into the combustion chamber ( 13 ) the fuel is nebulized in hot exhaust gas before being pressed into it in the prechamber. At the beginning of the combustion chamber ( 13 ) optimum mixing, turbulence of the two media air and hot gas is achieved during simultaneous pressing, resulting in a resounding combustion, whose expanding flame the piston ( 5 ) through the combustion chamber ( 13 ) drives. The piston ( 10a ) is in the antechamber ( 10 ) pulled back shortly before the end of the combustion work, bringing it hot gas burned in the antechamber ( 10 ), which is the next fuel to be injected - here z. B. diesel - can evaporate quickly with several hundred ° C. Since there is no oxygen in this exhaust gas of the previous combustion, the fuel can only vaporize. A better molecular resolution can hardly be desired. Only when the fuel vapor with the fresh air (O / oxygen) in the transition region of the combustion chamber ( 13 ) is swirled, it comes to an intensive combustion, which can be obtained over a time-delay initiation or stepwise, the combustion over a prolonged period. In addition to mechanical expulsion, the use of a valve solution -. B. electronically controlled - be necessary to demand with her the gas into the combustion chamber ( 13 ) to drive. With direct thermal attachment of the antechamber ( 10 ) at the combustion chamber ( 13 ) may be dispensed with hot exhaust gas possibly on the intake of exhaust gas. At the combustion chamber ( 13 ) facing wall of the antechamber ( 10 ) evaporates the fuel entering there in the existing negative pressure in particular with the outlet valve closed ( 10c ) after retraction of the piston ( 10a ). The fuel evaporates completely. It is incinerated intensively with the next expulsion and the additionally occurring air flow from the compressor. For starting with a cold machine, a heater ( 10b ) in the antechamber ( 10 ) be necessary. The individual approaches can be taken by way of example from the attached drawings.

final consideration

The exemplary construction of a rotary piston engine chosen here in the drawings is with 2 combustion chambers and 3 applied folding pistons ( 5 ). This results in 6 burns / revolution. This results in an almost constant torque curve on the shaft, whereby a largely quiet running is achieved. The necessary compression ( 24 ) is here on the same wave next to the AR ( 1 ), for each combustion chamber ( 13 ) a compressor ( 24 . 35 ) and works similar to a cellular wheel compressor ( 24 ) also with three 120 ° offset sliding piston ( 36 ) or z. B. based on the patent DE 10 2004 005 468.1 possibly even with a single rotor variant ( 35 ) with a piston centered in the center of the circle ( 29 ) and a circular guide rotor offset by half the piston height ( 28 4) For this solution, the speed of the compressor must be adapted to the combustion cycle, that is to rotate 3 times fast when a combustion chamber ( 13 ) should be supplied. This requires that for each of two combustion chambers here 1 compressor be kept, so two. In this case, the air in Zchng. 4 by the hollow axle shaft ( 31 ) is sucked in to the compressor ( 35 ) to be subjected to the necessary compaction, which z. B. for a diesel operation then the necessary increase in temperature is reached, which is necessary after the transfer of suitable channel solutions for the auto-ignition. As described above, an arrangement of the compression rotor ( 24 . 35 ) Also given in the same plane of rotation as that of the working rotor for reasons of a possibly necessary technical requirement whereby the circulation takes place synchronously controlled by means of a toothed belt or toothed belt on the transfer timing. Moreover, it may prove advantageous if a DKM is operated more in a lower rotational mode than the piston engine. A high rotational speed is particularly striking on the piston head guide ( 5e ) at the combustion chamber boundary ( 13 ), when one thinks of the question of wear and its consequences. On the other hand, the combustion work on the piston at a always rotating at the same rotational speed machine, of course, better effective when the piston must be driven on her last - that can not be done when the piston almost "runs away" in front of her.

LIST OF REFERENCE NUMBERS

DKM

Rotary engine

KR

compression rotor

R

Pressure Resulting on Pistons ( 5 )

1

AR working rotor

1a

Rotor center

2

side window

2a

Outer rim disc

3

casing

3a

Outer housing inside

4

Sealing segment piston

5

Folding piston, piston

5a

rotation anchor

5b

Piston edge folding piston

5c

Attack center

5d

Bottom hinged piston

5e

piston head

6

Sealing piston at 0 ° and 180 °

7

Cavity in the rotor / cooling, oil supply

8th

Exhaust

9

injection

10

antechamber

10a

Vorkammerkolben

10b

heater

10c

Valve, rotary valve

11

Oil injection, cooling in the rotor cavity

12

Cam track / forced guidance for pistons

13

combustion chamber

13a

Combustion chamber outside

14

Sealing strip on the piston

15

Sealing webs, non-contact

15a

grinding oil-backed seal

16

Bracket magnet

16a

Magnet on housing

16b

Magnet to disk

17

Funnel-shaped pressure redirection

18

Cavity under folding piston ( 5 )

18a

axial air supply

19

gap

20

sump

21

lip

22

Piston fixing, lateral

23

Housing interior

24

Compressor, cellular wheel compressor

27

Outer circle chamber

28

Guide rotor with hollow axle

29

compression piston

30

Pendulum guide piston

31

Air access through hollow axle

32

flywheel

33

Planetary wheel with crank mechanism

34

Connecting rod to the folding piston

35

Zellenradkompressor

36

Sliding pistons in the rotor

37

rotor

39

air supply

39

Reconciliation compression

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 10200405468 [0012]
• DE 102004005468 [0015]

Claims (10)

Rotary piston engine (DKM) for combustion of combustible propellants as a thermal converter into a torque in a single-rotor solution with one or more translationally moving substantially radially in the rotor (AR 1 ) mounted on the outer edge of the rotor circular segment-like folding piston ( 5 ) on a generally circular working rotor (AR 1 ) with one or more combustion chambers ( 13 ) with straight as well as circular up to Klothoidenähnlichen round outer structures and with laterally on (AR 1 ) attached mitdrehenden side windows ( 2 ), wherein for torque increase more than a pair of rotors (AR with KR) can be installed one behind the other, - characterized in that by means of the side windows ( 2 ) for the seals ( 15 . 15a ) offer at this combustion engine working under high pressure combustion significantly simplifying solutions in such a way that the piston (s) ( 5 ) only against translational movement (s) with their seals built into the sides of the rotating disk ( 2 ) on how to move off, as the seals on the at these side windows ( 2 ) adjacent housing areas ( 3 ) also with almost round to circular sealing elements, even due to the overall construction possibly oil lubricated to ensure the further necessary seal such that the side window seal ( 15 . 15a ) at its circular edge (Fig. 5; 15 ) by means of once about circular in her or in the wall of the housing attached sealing ridges ( 15 ) and in each case in the counterpart freely reaching inwards used as a vortex seal, to then directly above the side window edge or laterally on the disc ( 2 ) also by means of oil-based sliding seals ( 15a ) to be completely sealed, that these stable side windows ( 2 ) as an additional flywheel for a due to the lack of mass of the working rotor ( 1 ) and also compression rotor ( 31 O. 37 ) alone minor inertia bring in here significantly mass and contribute with this increase in mass to optimize the engine run. Rotary piston engine according to claim 1, characterized in that the translational up and down movement of the piston ( 5 ) at the lateral rotating disk boundary ( 2 ) by means of a piston edge ( 5b ) as well as penetrating into him movable sealing strip ( 14 6, bottom, and by means of the gas pressure by the pressure, the tightness is almost completely achieved, whereby against the smooth side window ( 2 ) this bar ( 14 ) provided with 1 or more grooves z. B. also spring assisted in the piston ( 5 ) tired on the side window ( 2 ) and thus seals, oil-supported or not. Rotary piston engine according to claim 1 to 2, characterized in that the side window ( 2 ) by their lateral sealing of the combustion chambers ( 13 ) use for various control processes on or in the rotor ( 1 ) with his / her piston ( 5 ) or other such. B. a control of the piston ( 5 ) in the translational up and down movement by a guide this in one of the housing ( 3 ) fixed curved path ( 12 ), z. B. a gear-driven solution via a stationary Polrad- ( 32 ) and this orbiting planetary gear ( 33 ) with crank mechanism and connecting rod ( 34 ) to the folding piston ( 5 ) this exactly at the combustion chamber boundary ( 13a ), wherein the gears may have mutually slightly varying radii so as not to be able to descend not only circular configurations, z. B. one with cam (not shown) on the side window ( 2 ) or on the housing ( 3 ) triggering mechanism the lifting of the slide ( 6 ) at the 0-point or the movement for the output cylinder ( 10a ) in the antechamber ( 10 ), like similar events on and in this disc ( 2 ) let work. Drawing 1, 2 u. 5th Rotary piston engine according to claim 1 to 3, characterized in that with a at the outer edge of the side window ( 2 ) extension or broadening ( 16 ), Fig. 5, an opportunity is offered to magnet ( 25 ) on one of the housings ( 3 ) placed winding ring ( 26 ), or vice versa, perform electrical work, which replaced with this device both the starter and the alternator or this solution as electric motor for electric driving alone or in mixed mode as well as for pure charging purposes and for braking purposes by means of generator power for battery charging and thus correspond to the respective use requirement, such that this claim as that of the further claims 1 to 3, the above-mentioned facilities on the side window ( 2 ) individually or in their variously intended tasks as a whole or supplemented with other added new solutions, undisturbed all possible objections apply whether individually or partially or claimed in total. Rotary piston engine according to claim 1 to 4, characterized in that the seal on the piston head ( 5b ) against the circumferential surface of the combustion chamber ( 13 ) limiting housing inner surfaces ( 13a ) as well as the seal at 0 ° as 180 ° against the AR ( 1 ) with a funnel-shaped pressure redirection ( 17 ) facing the flame front Surface on the piston head ( 5b ) or side seals ( 14 , so) a gas pressure opposed to the expanding combustion process at the moving interface between the piston head ( 5 ) and combustion chamber limitation ( 13a ) ensures a substantial zero pressure situation and with other well-known sealing solutions remaining pressure losses are prevented, characterized in that by means of a channel deflection at the piston head by almost 180 ° in an underlying larger inlet surface gas pressure recorded directly with a smaller outlet on the piston head ( 5e ) narrowing deflected here with equal or increased pressure against the general flame wall exits and beyond by means of a movable lip ( 21 ) at the end of the piston head ( 5e ) by means of the gas jet to the combustion chamber boundary ( 13a ) ensures a nearly absolute seal, as this lip solution ( 21 ) also for the pistons 4 or 6 can apply. Drawing 1 u. 6; ( 17 ), wherein the piston head ( 5e ) must be clearly raised raised from the piston outside to during the circulation of the folding piston ( 5 ) a scratch of the piston outside at the combustion chamber boundary ( 13a ) to prevent. Rotary piston engine according to claim 1 to 5, characterized in that the solution of the circular segment-like folding piston ( 5 ) with one at the edge of the AR ( 1 ) ( 5a ) is executed so that the attack center ( 5c ) of the combustion pressure on the otherwise obliquely and thus enlarged segment surface ( 5b ) in the combustion chamber ( 3 ), that is, the resultant (R), over most of the working angle, a nearly right angle on its rotational anchorage ( 5a ) to the rotor center ( 1a ) occupies, thereby largely discharges the pressure forces tangentially to the rotor and thus fully initiates without losses in the desired torque and thus act from this mechanical force ratio almost no lateral load forces on the shaft bearings. s. Drawing 1 Rotary piston engine according to claim 1 to 6, characterized in that this folding piston construction ( 5 ) on the underside of the piston ( 5d ) and against the interior of the AR ( 1 ) a chamber ( 18 ), here pumping or the compression work of the compressed air makes while the air over the hollow shaft axis ( 18a ), s. Patent 10 2004 005 468.1, feeding an additional compressor unnecessary. Rotary piston engine according to claim 1 to 7, characterized in that the seal at 0 ° as for example at 180 °, s. Drawing 1, of the combustion chamber ( 13 ) between AR ( 1 ) and the housing ( 3 ) by means of a likewise through the side window ( 2 ) positively driven sealing piston ( 4 O. 6 ) while working on the AR ( 1 ) and thereby the above-mentioned different solutions under claim 1 to 7 also come into effect, whereby when passing through the piston ( 5 ) at 0 ° as 180 ° both pistons ( 5 to / as 4 O. 6 ) are excavated so far that a contactless passing is possible and shortly after passing both pistons ( 5 as 4 O. 6 ) again for their sealing work on their sealing surface, Brennraumbegrenzung ( 5 at 13a ) and working rotor ( 4 O. 6 at 1 ), whereby, in addition, a significantly earlier expansion of the combustion chamber height is achieved in order to allow the initially high gas pressures from the combustion to act on the largest possible piston surface and thus be converted profitably into maximum torque work. Rotary piston engine according to claim 1 to 8, characterized in that the entire machine is cooled with a cooling gas leading cooling solution such that the refrigerant gas by means of a pump in its gas-carrying cooling pipe system at the pump sump ( 20 ) and at the enclosure of the combustion chamber ( 3a ) starting from the exhaust system in the opposite direction right up to the outlet of the hot exhaust gas at the exhaust port ( 8th supplied to the engine, a many hundred degrees hot gas is produced, which then in a rotary pump, z. B. by means of the patent DE 10 2004 05 468.1, as relaxation motor for a further torque yield, then cooled again to be fed to this cooling circuit, whereby the engine even fully heat-encapsulated the Joule introduced can fully implement in rotary work. Rotary piston engine according to Claims 1 to 9, provided with an injection, characterized in that the system, which is in a respective revolution status during operation, and always at the same rotational speed, actuate the piston ( 5 ), requires a fast effective combustion, which redesigns as follows in two steps, first injection ( 9 ) of the fuel into a hot prechamber ( 10 ), there guest and then by means of a tailor-made pre-chamber piston ( 10a ) at the time of the transfer of the compressed air from the compression rotor (KR) in the beginning of the combustion chamber ( 13 ) with ejection of the fuel gas through the pre-chamber piston ( 10a in 10 ) for incineration due to intensive mixing with the airborne air / oxygen from the compression, and the timing of this operation by means of a closure / valve ( 10c ) is also determined depending on the process also varies over time or not, and that then at the end of the combustion or expansion phase of the piston ( 5 ) in the combustion chamber ( 13 ) the prechamber piston ( 10a in 10 ) is withdrawn and thus burned hot gases in the Antechamber ( 10 ), with which the next injection in the hot exhaust only gas, since there is no oxygen in the exhaust, only allows the heating of the fuel, s. Drawing 1; ( 9 u. 10 ), or moreover, in the case of a hot machine, the intake of exhaust gas when sufficient temperature is reached at the combustion chamber wall ( 13a , outside) can be completely omitted, since due to the high heat at the combustion chamber wall ( 13a , outside) and a certain negative pressure with retracted piston ( 10a ) in the antechamber ( 10 ) the injected fuel will also completely evaporate for the next injection for the renewed combustion, whereby the need may arise that with a temperature monitoring such as control of the antechamber ( 10 ) to maintain a certain necessary temperature level, the chemical function of the fuel is maintained and not by exceeding a critical temperature loses its full effectiveness and / or it is thermally transformed into other chemical states.

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