WO2019149297A1

WO2019149297A1 - Axial piston motor

Info

Publication number: WO2019149297A1
Application number: PCT/DE2018/100075
Authority: WO
Inventors: Ulrich Rohs
Original assignee: GETAS GESELLSCHAFT FüR THERMODYNAMISCHE ANTRIEBSSYSTEME MBH
Priority date: 2018-01-31
Filing date: 2018-01-31
Publication date: 2019-08-08

Abstract

In order, in the case of an axial piston motor, to make a satisfactory degree of efficiency possible, even at comparatively high rotational speeds, and to reduce the risk of the production of carbon monoxide and/or the quantity of unburnt and/or incompletely burnt hydrocarbons, it can be the case in an axial piston motor that (i) a combustion chamber has a combustion chamber wall, and at least one of the feed ducts can be opened and closed via a poppet valve which is seated in the combustion chamber wall, (ii) one of the feed ducts can be opened and closed via an overhead poppet valve, and/or (iii) at least one of the feed ducts can be opened and closed via a poppet valve with a valve stem which extends with one component in the direction of a working stroke of working pistons.

Description

axial piston motor

[01] The invention relates to an axial piston motor with internal continuous

Combustion.

Such axial piston engines have a continuously operating combustion chamber, a number of working cylinders with in this reciprocating working piston and a Abtriebswehe, wherein the combustion chamber and the output are coaxial with each other on a central axis and the working cylinders are arranged around the central axis and wherein the combustion chamber is connected via open and closable shot channels with the working cylinders. Corresponding axial piston motors with internal continuous combustion can be found, for example, in EP 1 035 310 A2, EP 2 711 499 A2, WO 2011/009455 A2, WO 2012/107013 A2 and also in the as yet unpublished German patent application DE 10 2015 118 237, where there are each slider, whether rotary valve or spool, used to open or close the shot channels.

[03] It is an object of the invention to provide an axial piston engine which has a good efficiency even at relatively high speeds and in which the risk of generating carbon monoxide (CO) or the amount of unburned or incompletely burned hydrocarbons (CH), For example, by Quentch phenomena, as possible reduced.

[04] The object of the invention is achieved by an axial piston motor having the features of independent claim 1. Further, possibly also independent thereof, advantageous embodiments can be found in the subclaims and the following description.

[05] In this case, the invention is based on the basic knowledge that - contrary to all previous assumptions - poppet valves can be used to open and close at least one of the weft channels, especially if additional measures to reduce the risk of carbon monoxide (CO) production or the amount of unburned or incompletely burned hydrocarbons (CH). Such measures can be summarized in the prevention of dead spaces between the combustion chamber and the poppet valves as a basic idea. By itself, the use of poppet valves in crankshaft engines, and not in axial piston engines, with internal continuous combustion since 1910 is known from US 972,504 or also from 1925 published GB 63 53. However, there provided, long shot channels between combustion chamber and cylinder high efficiencies in any way suspect and lead in particular to Schusskanalausfaltungen that can expect a high number of possible dead spaces.

[07] In concrete implementation, an axial piston internal continuous combustion engine comprising a continuously operating combustion chamber, a plurality of working cylinders having reciprocating working pistons and an output shaft, the combustion chamber and the output shaft being coaxial with each other on a central axis and the working cylinders are arranged around the central axis and wherein the combustion chamber is connected to the working cylinders via openable and closable shot channels, characterized in that the combustion chamber has a combustion chamber wall and at least one of the shot channels can be opened and closed via a poppet valve seated in the combustion chamber wall in order to have a good efficiency even at relatively high speeds and to reduce the risk of generating carbon monoxide or the amount of unburned or incompletely burned hydrocarbons as possible. The arrangement of the poppet valve in the combustion chamber wall dead spaces in front of the poppet valve can be reduced to a minimum, the poppet valve, even at high speeds unlike the known slide arrangements, can allow high efficiency.

[08] Cumulatively or alternatively, an axial piston internal continuous combustion engine comprising a continuously operating combustion chamber, a plurality of working cylinders having reciprocating in this reciprocating working piston and an output shaft, wherein the combustion chamber and the output shaft coaxial with each other on a Central axis and the working cylinder are arranged around the central axis and wherein the combustion chamber is connected via open and closable shot channels with the working cylinders, characterized in that at least one of the weft channels via a suspended poppet valve is openable and closable, even at relatively high speeds to have a good efficiency and to reduce the risk of generating carbon monoxide or the amount of unburned or incompletely burned hydrocarbons as possible. In this case, the poppet valve in turn allows a relatively high efficiency, while the hanging configuration in the direction of the higher pressure, ie in the direction of the combustion chamber, the risk of any dead spaces, for example, by a valve stem could be avoided, since the valve stem in the direction of the low-pressure side, that is to say from the poppet valve, extends in the direction of the working cylinder when the poppet valves are suspended, and consequently faces the disk surface of the combustion chamber.

[09] Cumulatively or alternatively, an axial piston internal continuous combustion engine, comprising a continuously operating combustion chamber, a number of working cylinders with reciprocating in this reciprocating working piston and a Abtriebswehe, wherein the combustion chamber and the Abtriebswehe coaxial with each other on a Central axis and the working cylinders are arranged around the central axis and wherein the combustion chamber is connected via open and closable shot channels with the working cylinder, characterized in that at least one of the weft channels via a poppet valve with a component extending in the direction of the working stroke of the working piston Valve stem is open and closable to have a good efficiency even at relatively high speeds and reduce the risk of generating carbon monoxide and the amount of unburned or incompletely burned hydrocarbons. In this connection, the poppet valve also permits relatively high efficiency at higher rotational speeds, while the orientation of the valve stem in the direction of the working piston, ie opposite the return stroke of the working piston, accordingly ensures that the plate of the poppet valve points in the direction of the combustion chamber. which accordingly minimizes the risk of dead space, as already explained above. [10] In this context, it should be noted that the flow rates of continuously operating combustion chambers, such as those found in internal continuous combustion engines, are in no way comparable to those of engines with ignition and ignition at each stroke thus an explosion takes place. The latter requires - of course - a wandering in a cylinder and propagating flame with a concomitant pressure wave, while forming in a continuous combustion chamber to the valves in the shot channels also correspondingly continuous conditions and also hot gases through the shot channels in the Working cylinder arrive, which runs completely differently in engines in which only in the working cylinders ignition occurs. Although the poppet valves are thus exposed directly to a stream of hot gas, which, depending on the specific embodiment may well be well over 1 000 ° C, since the temperature at the combustion chamber wall is quite about 2200 ° C, it is technically feasible that the Do not overheat valves. It has surprisingly been found that despite these high temperatures certainly poppet valves, which have a relatively small mass and in which the heat can be dissipated initially only on the valve stem, can still be used if, as in the practical experiment then can be understood, the valve opening times not too long and the corresponding poppet valve can be additionally cooled by suitable measures.

Preferably, the valve opening times are below 20 °, in particular below 18 °, which have proven in a practical embodiment valve opening times by 12.5 °, for example in an interval between 10 ° and 15 °, as advantageous. This allows sufficiently short opening times, so that too much thermal energy is not transferred when flowing around the poppet valves, with opening times below 6 °, especially below 8 ° already can lead to efficiency reductions, if due to the then relatively short opening times only very little hot gases through the Poppet valve and the associated firing channel get into the respective working cylinder. In this context, it should be additionally stated that the final opening times, even if they are given in angular degrees, depend on the rotational speed of the axial-piston motor, which, however, then only requires a conversion.

Preferably, the poppet valve has a water-cooled valve seat, so that when the poppet valve is closed, the poppet valve can be cooled via its valve seat. In addition to this, however, other measures, such as filling the poppet valve with a liquid at the operating temperature of the axial piston motor metal or similar measures that are known in conventional engines in the high performance area for cooling poppet valves, are used.

The water-cooled valve seat is particularly easy to implement when the poppet valve in the combustion chamber, especially in the combustion chamber floor, sitting, as usually the combustion chamber, and accordingly also the associated combustion chamber floor, is already water cooled.

It is understood that - depending on the concrete implementation - the poppet valve can also be arranged in a side wall of the combustion chamber, ie in a wall region of the combustion chamber, which or has a surface component parallel to the central axis. Likewise, the poppet valve or the poppet valves can be arranged in a transition region between the combustion chamber bottom and side wall of the combustion chamber, in which case it depends, as the valve stem in a suitable manner and in particular in coordination with The other modules of the axial piston motor can be aligned and controlled. In concrete terms, however, it is conceivable that the valve stems also point outwards with a radial component, in which case they must, if appropriate, be guided past the working cylinders or should be provided in the intermediate spaces between the working cylinders. For controlling the valves, in particular, mechanical controls are available, as they are already used in a similar form for the known sliding arrangements. Age natively also hydraulic or pneumatic or electromotive or electromag netic drives can be provided for the poppet valves, especially when the geometric conditions complicate an effective Anstellsteuerung by mechanical means. [16] The overall arrangement and in particular the valve seats build relatively compact, if at least two poppet valves, preferably all used for opening and closing the shot channels poppet valves, sitting in the combustion chamber wall and each having a common assembly formed valve seats. This requires a structurally simple and reliable arrangement of the valves to one another and, if the valve seat is water-cooled, an effective cooling of the respective valve seat.

[17] In particular, it is conceivable that the common valve seat forms the combustion chamber floor of the combustion chamber wall.

[18] Moving away from the combustion chamber along the central axis in the direction of the working environment, a working space can be defined, which is already used in the prior art for the control of the control piston and a water mill. The same applies to a work space spanned by the working cylinders, it being understood that a corresponding work space can also be spanned by the working cylinders and defined extending away from the combustion chamber along the central axis in the direction of the output shaft. Preferably, the valve stem extends in such a defined working space, which a particularly compact arrangement of the poppet valves and their control he allows, which then also the corresponding axial piston motor builds compact accordingly.

It is understood that the valve stems need not necessarily be formed parallel to the central axis, which initially, however, structurally appears to be relatively easy to implement. In particular, however, the valve stems may also be directed radially outwards from the combustion chamber at a slight angle, which then makes it possible for any bends or kinks in the weft channels, which may possibly lead to a reduction in the efficiency, to be reduced to a minimum , In general, however, it will be unavoidable that behind the poppet valve, the associated shot channel has a bend or angle to the associated working cylinder, since ultimately the valve stem in any way has to be led out of the firing channel, if this from the Combustion chamber is pioneering, which is independent of the other features of the present invention for an axial piston internal continuous combustion, comprising a continuously operating combustion chamber, a number of working cylinders in this reciprocating working piston and an output shaft, wherein the combustion chamber and the output shaft coaxial with each other on a central axis and the working cylinders are arranged around the central axis around and wherein the combustion chamber is connected via open and closable shot channels with the working cylinders, is advantageous, even if at relatively high speeds erzi a good efficiency and the risk of producing carbon monoxide or the amount of unburned or incompletely burned hydrocarbons should be reduced.

[21] Preferably, a poppet valve is arranged in each of the firing channels and the poppet valves are arranged in a circular shape relative to each other. This allows a compact design and a uniform and easy control of all poppet valves.

[22] Preferably, the poppet valve is controlled via a cam arm or a cam disc with openings. This allows the corresponding poppet valve to be lubricated easily and reliably by the cam disc with apertures or from the side of the cam arm, in which simply, as is well known from the operation of motors of all kinds, splashed oil is used for lubrication. In this case, allow the openings or the cam arm with its lesser extent that oil passes to the cam arm or through the openings through to the poppet valve. It is understood that this also applies if two or more or all the shot channels open and closing poppet valve are driven accordingly.

[23] As is well known in the prior art, the working cylinder may have exhaust valves, which are also designed as poppet valves. Preferably, however, unlike conventional engines, the exhaust valves are arranged with respect to their valve stems with a component opposite to the directional component of the valve stems of the poppet valves opening and closing the firing channels. As a result, the exhaust valves can ultimately be recognized without significant dead space in the working cylinders. In general, the axial piston motor has a number of compressor cylinders with in this reciprocating compressor piston, whereby appropriately compressed air for the combustion chamber can be bereitgesteht.

Here, the Verdichterzy are preferably cylinder as well as the working cylinder arranged around the central axis, whereby a correspondingly compact structure can be bereitgesteht. This can be used to compress the energy that is recovered in the working cylinders in the compressor cylinder, for example, by the compressor piston are driven by the working piston. This can happen, for example, indirectly via a flywheel or a driven pulley. Preferably, however, each of the working piston, each with a

Compressor piston connected via a connecting rod, so that a direct coupling and energy transfer can be ensured here. The latter can be ensured in particular by the fact that each compressor piston is connected in accordance with a working piston. Preferably, the connecting rod in each case drives the output woof via a flywheel with a curved path, in which case - depending on the specific structure of the axial piston motor - also, for example, a swash plate or similar measures with which a Reziprokbewe movement of the connecting rod or the piston and the compressor piston can be mechanically converted into a rotational movement of the output woe, can be used. With regard to a structural compactness, it is advantageous if between the

Compressors cylinders and the combustion chamber is arranged at least one supply line, wherein for energetic reasons, the supply line can be interactively connected to each other in particular via a heat exchanger with an outgoing from the working cylinders derivatives. As a result, the waste heat from the working cylinders of the compressed air from the compressor cylinder can be supplied, which accordingly increases the efficiency.

It is understood that further efficiency-increasing measures can be provided, such as by several inlet and outlet and correspondingly more heat exchangers are provided to minimize the path lengths, it has been found that particularly preferably in each case two or three compressor cylinder and cylinder can be coupled via a common heat exchanger with each other. It is understood, moreover, that additional measures, such as a two-stage compaction, can serve to increase the efficiency.

[31] It is also conceivable that the pollutant emissions targeted by a multi-stage combustion and in particular by a pre-tempering or thermally induced splitting of the fuel before it comes into contact with compressed Fuft, can be used cumulatively accordingly.

[32] It is understood that exhaust valves and inlet valves can also be arranged correspondingly on the compressor side, but in the present case are not the subject of the invention. By a suitable design of these valves, which is already known from the prior art, the efficiency and in particular the compression performance can be optimized here as well.

[33] It is understood that the features of the solutions described above or in the claims can optionally also be combined in order to implement the advantages in a cumulative manner. [34] Further advantages, objects and features of the present invention will be explained with reference to the following description of exemplary embodiments, which are particularly illustrated in the appended drawing. In the drawing show:

Figure 1 is a schematic section through an axial piston motor;

Figure 2 is a detail view of the axial piston motor of Figure 1; and

FIG. 3 shows a detailed representation of a detail shown in FIGS. 1 and 2

Axial piston engine modified axial piston motor in a similar representation as Figure 2.

[35] The axial-piston engine 10 shown in FIGS. 1 and 2 has a continuously operating combustion chamber 20 and six working cylinders 30 and six compressor cylinders 40 and an output shaft 50. It is understood that in other embodiments, other numbers of working cylinders 30 and compressor cylinders 40 may be readily provided.

In this case, the combustion chamber 20 and the output shaft 50 are arranged coaxially with one another on a central axis 11, which represents a main axis of symmetry of the axial piston motor 10. The working cylinder 30 and the compressor cylinder 40 are also arranged around the central axis 11 around rotationally symmetrical to each other.

[38] Working pistons 31 run in the working cylinders 30 and compressor pistons 41 run in the compressor cylinders 40. In each case a working piston 31 and a compressor piston 41 are connected to each other via a connecting rod 59, so that in this way directly energy from the respective working piston 31 can be transmitted to the respective compressor piston 41. It is understood that, in different embodiments, such a direct connection between the working piston 31 and the compressor piston 41 need not necessarily be provided, since ultimately it does not play any raw, in which way compressed air of the combustion chamber 20 can be provided. On the other hand, the present arrangement is structurally compact and energetically premature.

The output shaft 50 carries a flywheel 53 with a cam track 54, which is comprised of rollers 58, which are each arranged on the connecting rod 59. In this way, the reciprocating motion of the connecting rod 59 can be coupled with the rotational movement of the output 50.

The axial piston motor 10 also has a heat exchanger 70, by which on the one hand a supply line 71 from a compressor-side plenum 74 to the combustion chamber 20 and on the other hand exhaust gas from a working piston side manifold 73, which is connected via leads 72 to the working cylinders 30 leads , In this way, the exhaust gas from the working cylinders 30 can be used to heat the compressed air from the compressor cylinders 40.

Here, the compressor-side plenum 74 via here unspecified explained valves with the compressor cylinders 40 is connected. It is understood that in different embodiments, several such

Supply lines 71 and such heat exchanger 70 may be provided, whereby in particular any losses on the working piston side manifold 73 can be minimized in a conventional manner. Such deviating arrangements are well known in the art. In the discharge lines 72 exhaust valves 32 are arranged, which are formed in a manner known per se as poppet valves. In the present embodiment, the Control of the exhaust valves 32 hydraulically and via suitable and closing acting compression springs, which may be provided in different embodiments readily a mechanical or pneumatic control.

[45] In the working cylinders, the working pistons 31 run with a working stroke 39 and with a return stroke 38. This movement is followed by the compressor piston 41 accordingly.

In addition, 30 shot channels 21 are provided between the combustion chamber 20 and the working cylinders, which are openable and closable via poppet valves 60, so that hot working gas from the combustion chamber 20 are selectively fed to the working cylinders 30 and can do his job there. The working gas is then expelled via the discharge valves 32 from the power pistons 31 and passes through the discharge lines 72 into the heat exchanger 70 where it heats much of its thermal energy to compressed air from the compressor cylinder 40 and from the compressor side collection space 74, respectively.

[47] The compressed air is supplied to the combustion chamber 20, in which case in a conventional manner after the heat exchanger 70, a further heating via a

Combustion chamber 28, which is to be cooled by this air itself can take place.

In the shot channels 21 are also heat shields 27, which are formed in this embodiment as a ceramic tube and the minimization of thermal losses and the discharge of the surrounding assemblies serve. Also, the side wall 25 of the combustion chamber 20 is formed in this embodiment as a ceramic tube to serve in this way accordingly as insulation.

The combustion chamber 20 itself is fed in this embodiment on the one hand via a main burner 15, which has a main nozzle 17 and is fed via lateral, not separately numbered oblique feed openings with heated compressed air, so that the actual combustion takes place in the combustion chamber 20. Before the fuel from the main nozzle 17 comes into contact with the compressed air, it is thermally decomposed via a pre-burner 16, which in turn has a pre-nozzle 18 with a separate air supply (not numbered separately). The fuel is given here via fuel supply 19.

By this arrangement, the risk of incomplete combustion and in particular the risk of formation of pollutants can be reduced to a minimum, wherein such a two-stage combustion in various embodiments from the prior Technique already known. It is understood that in different embodiments of the present invention and shown in Figures 1 and 2 axial piston motor 10 can be provided with alternative burner arrangements, without thereby the basic functionality and in particular the advantages of the present invention in question. [51] The side wall 25 and a combustion chamber bottom 23 form the combustion chamber wall 22, in which case also a combustion chamber lid, in which the main burner 15 and possibly also the oblique feed openings are arranged with heated compressed air, must be added.

[52] In addition, it should be noted that radially outside the side wall 25 of the combustion chamber 20 is still a combustion chamber insulation 26 is provided, which in this

Embodiment is shown by a distance-maintaining spiral and through which the compressed air is supplied to the side wall 25 through the oblique feed openings in the combustion chamber cover or via ventilation holes of the nozzle 18 to the burner, whereby on the other hand, a cooling of the side wall 25 and on the other hand achieves a further pre-tempering of the air can be.

[53] The combustion chamber carrier 28 and in particular also the combustion chamber bottom 23 are water-cooled via a water cooling system 69. This also applies to a valve carrier 68, which carries the poppet valves 60.

The poppet valves 60 each have a valve stem 61 and a valve cover 63, which sits in a closed state in a valve seat 62.

[55] Via a valve spring 64 which is supported on the valve carrier 68 and a support 65 against which the valve spring 64 acts, the valve cover 63 is pulled against the valve seat 62, the poppet valve 60 being designed as a suspended poppet valve.

To open the poppet valve 60, a force acting in the direction of the valve cover 63 must be applied to the valve stem 61, wherein the poppet valve 60 in each case in a

Valve guide 66 is guided for the associated movement, which is arranged in the valve carrier 68.

For driving and applying this force, the embodiment shown in Figures 1 and 2, a camshaft 55, which sits on the output shaft 50, so that the former is synchronized with the rotational movement of the output shaft 50. [58] In the embodiment shown in Figures 1 and 2, the camshaft 55 carries a cam plate 52 with openings 56 through which lubricant can also reach the poppet valves 60.

Deviating from this, the axial piston 10 shown in Figure 3 in a similar representation as Figure 2 carries a cam arm 51 on the camshaft 55 through which the

Poppet valves 16 can be driven. Due to the small extent of the cam arm 51 in the circumferential direction around the central axis 11, accordingly, lubricant can reach the poppet valves 60.

In the exemplary embodiment illustrated in FIG. 3, the combustion chamber bottom 23 is formed by a plate forming all the valve seats 62 of the poppet valves, while in the exemplary embodiment illustrated in FIGS. 1 and 2, a separate valve seat 62 is provided per poppet valve 60, each into the combustion chamber bottom 23 is arranged. The embodiment illustrated in FIG. 3 is particularly compact and stable, and in particular is also structurally easy to cool. Incidentally, the embodiment shown in FIG. 3 corresponds to FIG

Embodiment of Figures 1 and 2.

[62] As immediately apparent sit in the illustrated in the figures

Axialkolbenmotoren 10 the poppet valves 60 in the combustion chamber wall 22 and in the combustion chamber bottom 23 and ensure that the shot channels 21 are open and closed. [63] It is understood that in different embodiments, the poppet valves 60 may also be arranged in the side wall 25 of the combustion chamber, which, however, may be less compact or may be more complex in terms of controlling the poppet valves 60.

In particular, however, the final channels 21 each have a kink 24, through which the path of the firing channel 21 of the combustion chamber wall 22 and of the

Combustor floor 23 is embossed to the working cylinder 30. This kink 24 is seen from the combustion chamber 20 from behind the poppet valves 60, so that the respective valve stem 61 may be formed rectilinear.

It is understood that in different embodiments, the kink can also be made weaker, especially if the working cylinder even closer to the

Central axis 11 are set. Depending on the concrete implementation, the valve stems 61 be tilted radially outward at an angle of inclination, so that the kink 24 can also be made weaker, whereby any reductions in the flow can be reduced to a minimum.

[66] In contrast to conventional piston engines, the valve stems 61 of the poppet valves 60 are directed in the opposite direction to the valve stems of the outlet valves 62 and are directed, in particular in the direction of the working stroke 39, of the working pistons and not in the direction of the return stroke 38.

By the working cylinder 30 and in particular by the combustion chamber 20, a working space 12 can be defined, whose height is limited by the working cylinder, said working space 12 then has a combustion chamber side boundary 13 and a output shaft side boundary 14, by the height of the Abreitszylinder 30 can be defined.

[68] As can be seen immediately, the valve stems 61 of the poppet valves 60 are arranged in the working space 12.

LIST OF REFERENCE NUMBERS

10 Axial piston motor 40 compressor cylinder

11 Central axis 41 Compressor piston

12 workspace

13 combustion chamber-side limitation of the 50 output shaft

Working space 12 35 51 Cam arm

14 Output shaft-side limitation 52 Cam disc

of the working space 12 53 flywheel

15 main burner 54 curved path

16 preheaters 55 camshaft

17 main nozzle 40 56 opening

18 Pre-nozzle 58 Roller

19 fuel supply 59 connecting rod 20 combustion chamber 60 poppet valve

21 Shot channel 45 61 Valve stem

22 combustion chamber wall 62 valve seat

23 combustion chamber testicles 63 valve covers

24 Kink of the firing channel 21 64 Valve spring

25 side wall of the combustion chamber 20 65 support

26 Combustion chamber insulation 50 66 Valve guide

27 Heat shield of firing channel 21 68 Valve carrier

28 Combustion chamber 69 Water cooling 30 Working cylinder 70 Heat exchanger

31 working piston 55 71 supply line

32 Outlet valve 72 Discharge

38 Return stroke 73 Working piston side manifold

39 working stroke 74 compressor-side collecting space

Claims

Claims:

An axial-piston engine (10) with internal continuous combustion comprising a continuously operating combustion chamber (20), a number of working cylinders (30) with reciprocating working pistons (31) and an output shaft (50), the combustion chamber (10). 20) and the output shaft (50) coaxial with each other on a

Central axis (11) and the working cylinder (30) are arranged around the central axis (11) around and wherein the combustion chamber (20) via open and closable shot channels (21) with the working cylinders (30) is connected, characterized in that the combustion chamber (20) has a combustion chamber wall (22) and at least one of the shot channels (21) via a in the combustion chamber (22) seated poppet valve (60) is openable and closable, that at least one of the shot channels (21) via a suspended poppet valve (60 ) is openable and closable and / or that at least one of the weft channels (21) via a poppet valve (60) with a with a component in the direction of the working stroke (39) of the working piston (31) extending valve stem (61) openable and closable is.

2. Axial piston engine (10) according to claim 1, characterized in that the poppet valve (60) has a water-cooled valve seat (62).

3. Axial piston engine (10) according to claim 1 or 2, characterized in that at least two poppet valves (60) in the combustion chamber (22) sit and each formed by a common assembly valve seats (62).

4. Axial piston engine (10) according to claim 3, characterized in that the common same valve seat (62) forms a combustion chamber bottom (23) of the combustion chamber wall (22).

5. axial piston motor (10) according to one of claims 1 to 4, characterized in that the valve stem (61) in a from the combustion chamber (20) away along the

Central axis (11) extending in the direction of the output shaft (50) extending and / or of the working cylinders (30) spanned working space (12).

6. Axial piston engine (10) according to one of claims 1 to 5, characterized in that behind the poppet valve (60) of the associated shot channel (21) has a kink (24) to the associated working cylinder.

7. axial piston motor (10) according to one of claims 1 to 6, characterized in that in each of the shot channels (21) a poppet valve (60) is arranged and the

Poppet valves (60) are arranged in a circular shape to each other.

8. Axial piston engine (10) according to one of claims 1 to 7, characterized in that the poppet valve (60) via a cam arm (51) or a cam disc (52) with openings (56) is driven.

9. axial piston motor (10) according to one of claims 1 to 8, characterized in that the axial piston motor (10) alleviate a number of Verdichterzy (40) with in these reciprocating compressor piston (41), preferably wherein the compressor cylinder ( 40) as well as the working cylinders (30) are arranged around the central axis (11) around.

10. Axial piston engine (10) according to claim 9, characterized in that each

Compressor piston (41) via a connecting rod (59) with a working piston (31) is connected, wherein the connecting rod (59) preferably the Abtriebswehe (50) via a flywheel (53) with a curved path (54) drives.

11. Axial piston engine (10) according to one of claims 1 to 10, characterized in that between the compressor cylinders (40) and the combustion chamber (20) at least one

Supply line (71) is arranged, wherein preferably the supply line (71) and one of the working cylinders (30) outgoing discharge (72) via a heat exchanger (70) are interactively interconnected.

12. Axialkolbenmotor (10) according to one of claims 1 to 11, characterized in that the combustion chamber (20) has a fuel supply (19).