DE102011086571A1 - Axial piston machine with variable displacement and hydraulic drive train with an axial piston machine - Google Patents

Abstract

The invention relates to an axial piston machine (18) having a housing (1) for pump and / or motor operation with variably adjustable displacement, with a pivoting cradle (2) pivotable by a first adjustment device (3) within an angular range predetermined by the first adjustment device (3) ), which has at least one surface (22) and a piston drum (7) arranged rotatably on an axis (24) with pistons (12, 120) arranged in the piston drum (7), the pistons (12, 120) on the surface (22) of the pivoting cradle (2) lie in such a way that between the piston (12, 120) and the pivoting cradle (2) pressure forces can be transmitted. The axial piston machine (18) according to the invention also has a second adjusting device (9, 16) which is movable in such a way that the absorption volume of the axial piston machine (18) can be varied in addition to the displacement volume which can be variably adjusted by the first adjusting device (3).

Description

State of the art

The invention relates to axial piston machines for pump and / or engine operation with variable displacement and a hydraulic drive train with an axial piston according to the invention.

Axial piston machines are used in principle for the conversion of hydraulic into mechanical work, or vice versa. They are accordingly operated as a motor and / or as a pump or as a hydraulic transmission and are used in a wide variety of applications.

An area of application for axial piston machines is, for example, in the field of motor vehicles in a serial or parallel hydraulic hybrid drive train. In a serial hydraulic hybrid powertrain, such as the one not previously published German application with the file number 102011005356.5 is disclosed, at least one hydraulic displacement machine is connected in series with, for example, an internal combustion engine. The hydraulic displacement machine can be operated as an axial piston machine or hydraulic pump or as a hydraulic motor.

Furthermore, for example, from the unpublished German application with the file number 102010038651.0 Axial piston machines with adjustable pivoting weigh disclosed.

In axial piston engines in hybrid hydraulic powertrains, there may be a need for higher torque in certain operating conditions. For example, when starting.

In existing axial piston machines, an increase in the torque is possible by increasing the hydraulic pressure, which has the disadvantage that the machine must be designed for a higher pressure, or the speed of the axial piston machine must be increased, but this is not useful for every operating condition , especially when starting off. Furthermore, axial piston machines can be used with a larger pivot angle, or, with a large possible pivoting, but this requires greater space, or the problem of over-dimensioning in standard operation results. Furthermore, axial piston machines with increased pivot angle have a large projection length of the pistons from the associated cylinder. This lowers the efficiency in part-load operation of the machine, since the ratio between the projection length and the guide length in the cylinder is decisive for the efficiency. The guide length can not be increased arbitrarily, due to space and viscous losses. Another disadvantage arises for the servomotors of the adjustment at a large tilt angle, as higher forces are overcome to adjust the pivoting cradle.

Disclosure of the invention

The invention is based on the object to provide a higher torque on the axial piston machine.

According to the invention, an axial piston machine with a housing for pump and / or motor operation with variably adjustable displacement is proposed, the axial piston machine having a pivotable by a first adjustment within a predetermined angular range by the first adjustment pivoting cradle having at least one surface and the axial piston machine rotatably arranged on an axis piston drum having disposed in the piston drum piston, wherein the piston abut on the surface of the pivoting cradle such that between the piston and the pivoting cradle pressure forces can be transmitted. The invention is characterized by a second adjusting device of the axial piston machine which is movable in such a way that the absorption volume of the axial piston machine can be changed in addition to the displacement volume which can be variably adjusted by the first adjusting device.

Advantages result from the additionally variable absorption volume in that, in standard operation, only the maximum absorption volume predetermined by the first adjustment device and the resulting torque can be achieved. This is also required in normal or standard operation in order to be in a good power and efficiency ratio of the axial piston machine. However, in certain operating conditions, such as when starting a motor vehicle with a hydraulic hybrid powertrain, it may be necessary for the axial piston engine to provide excessive torque. This is achieved according to the invention in that a second adjusting device is movable in such a way that the absorption volume of the axial piston machine can be changed in addition to the intake volume which can be variably adjusted by the first adjusting device.

The axial piston machine according to the invention has the advantage that it offers the advantages of a conventional axial piston machine in standard operation, such as a good efficiency, and flexibly and temporarily delivers a required higher torque in special operation, without, for example, an increase in pressure of the hydraulics would be required, or the entire Axial piston machine would have to be designed for a larger pivoting, as required for standard operation. It is particularly advantageous that a torque increase at low speeds of the axial piston machine is possible by the invention. The axial piston machine can thus be designed so that a smaller displacement is possible in standard operation, which ensures a more compact machine with low construction volume. Furthermore, the speed range of the axial piston machine is expandable.

The second adjusting device can be controlled, for example, via a higher-level control, in particular a motor control.

The axial piston machine may further be designed so that the surface of the pivoting cradle and / or that a support for the pivoting cradle by the second adjusting device is movable. This leads to a Hubvergrößerung in the overhead piston and thus to an increase in the intake volume of the axial piston engine. According to the invention, the projecting length of the pistons is thus increased in order to increase the volume of swallowing without the guide length having to be significantly increased. The Auskraglänge can be designed to the necessary length for the special operation, for example, the operating time when starting a motor vehicle to the total operating time is relatively low, so that the device is compact and can be manufactured material and cost.

The advantages of this design are that the axial piston machine can be made compact.

The second adjusting device can be designed so that it moves the support of the pivoting cradle, or the pivoting cradle via a linear guide, or that it deflects the surface of the pivoting cradle via an additional pivoting, or that it provides an additional twisting of the surface of the pivoting cradle.

A first embodiment of the invention is characterized in that the support is arranged in the piston drum and the piston drum or the support by the second adjusting device is axially movable. The support is, for example, an axial ball bearing, which is pressed or shrunk into the piston drum directly or shrunk. The support may for example also be indirectly connected to the piston drum, preferably in a holder which is firmly connected to the piston drum. In a further embodiment, the axially displaceable support can be arranged to be movable directly in the piston drum by the second adjusting device, or via a holder which is movable in the piston drum via the second adjusting device.

The second adjusting device of the axial piston machine is arranged indirectly for the first embodiment on the housing or in the piston drum.

The abovementioned embodiments have the advantage that the second adjusting device can be controlled pneumatically, hydraulically, mechanically or electrically.

Another embodiment of the invention comprises a multi-part pivoting cradle. In this case, the pivoting cradle may further comprise a pivoting body and a pivoting cradle arranged in the pivoting body with the surface, wherein the pivoting cradle is movable by the second adjusting device.

This embodiment has the advantage that only the pivoting cradle in the axial piston machine has to be exchanged to implement the concept essential to the invention and relatively little installation space is required. Particularly advantageous is the arrangement of the second adjustment in the pivoting cradle, as this is particularly space-saving.

Furthermore, the axial piston machine according to the invention can be arranged in a hydraulic hybrid drive train. Particularly advantageous is a serial hydraulic hybrid arrangement, wherein one or more axial piston machines are arranged directly or indirectly behind an internal combustion engine.

However, the axial piston machine according to the invention can also be used in other areas of the hydraulic machines. For example, for hydrostatic travel drives or hydrostatic rotary actuators in general. Here as a motor, pump or gearbox.

Further advantages and advantageous embodiments will become apparent from the description and the following drawings.

Short description of the drawing

Embodiments of the invention are illustrated in the drawings and explained in more detail in the following description.

Show it:

1 : shows an axial piston machine in swash plate design in longitudinal section with too a pivot axis of vertical pivoting cradle according to the prior art;

2 : shows an axial piston machine 1 in pump mode under full load in longitudinal section according to the prior art;

3 : shows an axial piston machine 1 in engine operation under partial load in longitudinal section according to the prior art;

4 : shows a first embodiment of an axial piston machine in standard operation (partial load);

5 : shows the first embodiment of an axial piston machine in standard operation (full load);

6 : shows the first embodiment of an axial piston machine in special operation

7 shows a second embodiment of an axial piston machine in standard operation (neutral position);

8th : shows the second embodiment of an axial piston machine in standard operation (full load);

nine : shows the second embodiment of an axial piston machine in special operation

Embodiments of the invention

Based on 1 . 2 and 3 becomes the operation of an axial piston machine 18 in swash plate design according to the prior art explained. In 1 are the essential components of this axial piston machine 18 exemplified. A pivoting cradle 2 is about a pivot 26 rotatably mounted, wherein the fulcrum 26 an axis 24 can cut. weighing pan 2 are also known under the terms swash plate or swash plate. Above the axis 24 is an adjusting device 3 shown in the form of a (telescopic) adjusting piston which is fixedly connected to a housing, not shown here. By adjusting the adjustment 3 becomes the pivoting cradle 2 , what a 1 perpendicular to the axis 24 stands and accordingly assumes an inclination angle α of 90 °, relative to the axis 24 deflected, as in the 2 and 3 is visible. Here is the adjustment 3 with the swivel cradle 2 connected such that only a movement in translational direction is possible. Around the axis 24 is a wave 4 rotatably arranged in the translational and rotational direction fixed with a piston drum 7 connected is. In the piston drum 7 are parallel to the axis 24 first cylinder 21 arranged, in which first pistons 12 with first piston bottoms 19 are located. The first pistons 12 lie with their first sliding shoes 20 on a surface 22 the pivoting cradle 4 , About this connection pressure forces can be transmitted. The first pistons 12 slide along a first cylinder wall 30 , The first cylinders 21 are circular and concentric about the axis 24 arranged. The cylinders are connected to both a high pressure H and a low pressure N. The section through the piston drum 7 is selected such that of the first cylinders connected to the high pressure H 21 one above the axis 24 is shown. Furthermore, the section is through the piston drum 7 selected such that of the first cylinders connected to the low pressure N 21 one below the axis 24 is shown. One of the surface 22 the pivoting cradle 2 opposite side 23 the piston drum 7 is fluid-tight rotatable with a fixedly connected to a housing not shown here connection plate 8th connected.

In the in 1 illustrated operation of the axial piston machine 18 become the first pistons 12 by a rotation of the shaft 4 not moved to each other, so one in the first cylinders 21 fluid is neither compressed nor relaxed.

2 shows the axial piston machine 18 out 1 in pump mode under full load in longitudinal section. It is clearly visible that the pivoting cradle 2 by means of the adjusting device 3 was deflected into its maximum position and thus the between the pivoting cradle 2 and the axis 24 included inclination angle α is considerably greater than 90 °. The swashplate machine 18 in the present embodiment is operated as an axial piston pump, also called Hydrostat, operated in a swash plate design. It is clearly visible that the first piston crown 19 of the first piston 12 between a first bottom dead center 34 and a first top dead center 36 emotional. This route is also called the first piston stroke 32 designated. The first displacement 28 is limited by the first cylinder wall 25 , from the first piston crown 19 when he reaches his first bottom dead center 34 is displaced, and the first piston crown 19 when he's in his first top dead center 36 is relocated.

The wave 4 is driven by a drive unit, not shown. The drive unit can be the shaft 4 rotate. Also, the drive shaft can be rotated speed or torque-controlled A fluid is through which in the direction of the pivoting cradle 2 from the first lower one 34 to the first top dead center 36 shifting first piston 12 sucked on the low pressure side N and by means of the then in the direction of connecting plate 8th from the first upper one 36 to the bottom dead center 34 shifting first piston 12 displaced on the high pressure side H.

3 shows the axial piston machine 18 out 1 in engine operation under partial load. Here is the pivoting cradle 2 by means of the adjusting device 3 in the opposite direction as in 2 adjusted, so that the inclination angle α between the pivoting cradle 2 and the axis 24 an inclination angle α of less than 90 ° occupies. Because of the pivoting cradle 2 is not as distracted as in the 2 shown, is the first piston stroke 32 also lower.

The high pressure H of the fluid is the high pressure side H of the in 3 shown supplied motor. By the fluid are in the first bottom dead center 34 shifted first piston 12 in the direction of the swivel cradle 2 until its top dead center 36 relocated. By the displacement of the pistons 12 becomes a rotation of the piston drum 7 and the wave associated with it 4 initiated. The wave 4 can now drive an affiliated end user. Subsequently, the expanded fluid on the low pressure side N is replaced by that of the upper one 36 to the bottom dead center 34 ejected to be displaced first piston from the axial piston motor. The ejected fluid becomes the low pressure side of the axial piston pump 2 fed.

The torque of the axial piston machine 18 results among other things from the so-called displacement in pump or engine operation. The displacement is that amount of hydraulic fluid that is the axial piston machine 18 consumed per revolution. With adjustable swivel cradle 2 the displacement is variably adjustable. The angle range is at the pivoting cradle 2 to 1 to 3 given and depending on the deflection of the adjustment 3 , The larger the angle α, the higher the displacement and the higher the torque results.

The axial piston machine according to the invention 18 should allow a "boosting", that is, that an operating state of the axial piston machine 18 is possible, in which a torque increase compared to the standard operation is made. In the following, the standard operation sets the state in the normal operation of the axial piston machine 18 and the special mode the state of the torque increase, or the "Boostens".

The 4 to 6 show a first embodiment of the axial piston machine according to the invention 18 with a housing 1 in which about a front shaft bearing 5 and a rear shaft bearing 6 the wave 4 is stored. The basic structure of the axial piston machine according to the invention 18 is equal to the structure of the axial piston machine 18 from the representation of 1 to 3 ,

The axial piston machine according to the invention 18 has a first adjustment 3 on, the rotatably mounted pivoting cradle 2 by the angle α with respect to the axis 24 deflects. The first adjusting device 3 specifies an angular range in which the axial piston machine 18 can be operated in standard mode. The one of the first adjustment 3 predetermined angle thus provides a critical angle there, with the first adjustment 3 maximum can be set. The pivoting cradle 2 is for example via a bearing shell or a backdrop in the housing 1 rotatably mounted.

The deflection of the swivel cradle 2 is also called pivoting β, in which case the value of the pivoting β, the angle between the perpendicular to the axis 24 and the surface 22 the pivoting cradle 2 is. A usual maximum pivoting β in axial piston machines 18 is included, for example 15 to 17 °, since there is an advantageous ratio between power and efficiency of the axial piston machine 18 established. At a larger pivoting β increases the power, or the torque, but the efficiency of the axial piston machine decreases 18 , The maximum pivoting β in standard operation is the critical angle caused by the first adjustment 3 is given.

The piston drum 7 , with in the piston drum 7 arranged piston 12 . 120 , is about a cylinder toothing 10 axially displaceable and non-rotatable with the shaft 4 connected and the cylinder teeth 10 has a stop ring 13 on, on which the piston drum 7 in standard operation of the axial piston machine 18 towards the swivel cradle 2 supported. In the sectional views of the 4 to nine are each a piston 12 in the highest possible position (high point) of the cutting plane and a piston 120 represented in the lowest possible position (low point) of the cutting plane.

Furthermore, the axial piston machine 18 a second adjustment nine on, in this embodiment by hydraulically operated displacement piston nine which is shown on the connection plate 8th are arranged. The connection plate 8th , also called distribution plate, moves in the axial direction with the piston drum 7 With. The axial displacement of the piston drum 7 For example, pneumatically, electrically, mechanically or via other actuators. Furthermore, the piston drum 7 a support 11 for the pivoting cradle 2 in the form of a thrust bearing. The pivoting cradle 2 has a surface 22 on, on the pistons 12 . 120 lie in such a way that between the piston 12 . 120 and the swivel cradle 2 Compressive forces can be transmitted.

4 shows the first embodiment of the axial piston machine 18 in a mean pivoting β of about 5 °. The piston drum 7 lies on the stop ring 13 on and the surface 22 the pivoting cradle 2 is free and not at the support 11 at. The piston 12 in the high point is not quite out of his cylinder 21 extended and the piston 120 in the low point is not yet completely in his cylinder 21 retracted.

5 shows the first embodiment of the axial piston machine 18 in a maximum pivoting β in the standard mode of about 15 °, the first adjustment 3 their maximum possible Ausklenkung on the pivoting cradle 2 exercises and thus the critical angle is reached in standard operation. The piston drum 7 lies on the stop ring 13 on, or is supported by this and the surface 22 the pivoting cradle 2 is at the support 11 at. The piston 12 in the high point is for standard operation maximum out of his cylinder 21 extended and the piston 120 The low point is almost completely in his cylinder 21 retracted.

In 6 is the axial piston machine 18 shown in special mode. The piston drum 7 is through the second adjustment nine axially in the direction of the pivoting cradle 2 away adjusted. At the same time the support becomes 11 for the pivoting cradle 2 axially with the piston drum 7 emotional. Because the swivel cradle 2 is mounted on a housing fixed bearing and the first adjustment 3 has reached its maximum possible deflection, the upper piston moves 12 at the highest point still further out of his cylinder 21 as in standard mode and the piston 120 in the low point takes almost the same position as in the standard mode, so that the projection length of the upper piston 12 increases thereby the swallow volume of the axial piston machine 18 increases and the torque increases. The upper piston 12 is therefore overstretched and the pivoting β increases in comparison to the standard operation and is for example 20 °. The critical angle to standard operation is thus exceeded.

The 7 to nine show a second embodiment of the axial piston machine according to the invention 18 with a housing 1 whose wave 4 also via the front shaft bearing 5 and the rear shaft bearing 6 is stored. The basic structure of the axial piston machine according to the invention 18 is just like the structure of the axial piston machine 18 from the representation of 1 to 3 and 4 to 6 ,

The axial piston machine 18 The second embodiment, like the first embodiment, has a first adjustment device 3 on, the rotatably mounted pivoting cradle 2 by the angle α with respect to the axis 24 deflects. The first adjusting device 3 Here too, there is an angular range in which the axial piston machine 18 can be operated in standard mode. The maximum pivoting β in standard operation is the critical angle caused by the first adjustment 3 is given.

The pivoting cradle 2 is for example via a bearing shell or a backdrop in the housing 1 rotatably mounted.

The pivoting cradle 2 The second embodiment of the invention is a multi-part pivoting cradle 2 , consisting of a pivoting body 200 , one in the swiveling body 200 movable swiveling cradle 17 located on a lower side of the pivoting cradle 2 about a support 40 is supported in the form of a bearing dome and on the upper side of the pivoting cradle 2 via a second adjusting device 16 in the form of an additional piston movable in the pivoting body 200 is supported.

The piston drum 7 , with in the piston drum 7 arranged piston 12 . 120 , is axially fixed and non-rotatable with the shaft 4 connected.

The second adjusting device 16 the axial piston machine 18 is designed for example by hydraulically operated auxiliary piston. The displacement of the swiveling cradle 17 can also be done pneumatically, electrically, mechanically or via other actuators. The surface 22 the panning bugle 17 is designed so that the pistons on it 12 . 120 lie in such a way that between the pistons 12 . 120 and the swivel cradle 2 Compressive forces can be transmitted.

7 shows the second embodiment of the axial piston machine 18 in a pivoting β of 0 ° in standard operation. The swiveling cradle 17 , or their surface 22 is parallel to the pivoting body 200 aligned, with the pivoting cradle 17 on the lower side of the pivoting body 200 is supported and the second adjustment 16 in standard position. The piston 12 in the high point and the piston 120 in the low point are quasi in middle position in their cylinders 21 ,

8th shows the second embodiment of the axial piston machine 18 in a maximum pivoting β in the standard mode of about 15 °, the first adjustment 3 their maximum possible Ausklenkung on the pivoting cradle 2 exercises and thus the critical angle is reached in standard operation. The swiveling cradle 17 , or their surface 22 is still parallel to the pivoting body 200 aligned, with the pivoting cradle 17 on the lower side of the swivel cradle 2 is supported and the second adjustment 16 in standard position. The piston 12 in the high point is for standard operation maximum out of his cylinder 21 extended and the piston 120 The low point is almost completely in his cylinder 21 retracted.

In nine is the axial piston machine 18 shown in special mode. The swiveling cradle 17 is through the second adjustment 16 relative to the pivoting body 200 adjusted so that the surface 22 the panning bugle 17 no longer parallel to the pivoting body 200 is aligned. The adjustment happens in the direction away from the piston drum 7 , At the same time, the swiveling cradle rotates 17 for the support 40 on the lower side of the swivel cradle 2 , so that the upper piston 12 at the highest point still further out of his cylinder 21 moved out as in standard mode and the piston 120 in the low point takes almost the same position as in the standard mode, so that the displacement of the axial piston machine 18 increases and the torque increases as required. The upper piston 12 is therefore overstretched and the pivoting β increases in comparison to the standard operation and is for example 20 °. The critical angle to standard operation is thus exceeded.

A third embodiment, not shown, of the axial piston machine according to the invention 18 with a housing 1 in which about a front shaft bearing 5 and a rear shaft bearing 6 the wave 4 is mounted, has a basically the same structure as the axial piston machine 18 from the representation of 4 to 6 ,

The axial piston machine 18 The third embodiment has a first adjusting device 3 on, which is the rotatably mounted and axially displaceable pivoting cradle 2 by the angle α with respect to the axis 24 deflects. The first adjusting device 3 Here too, there is an angular range in which the axial piston machine 18 can be operated in standard mode. The pivoting cradle 2 is axially displaceable and rotationally fixed in the housing in this embodiment 1 stored. The Schwenkwiegenlagerung can be done via a bearing shell or a backdrop.

The pivoting cradle 2 is axially displaceable via a device and rotatably indirectly on the housing 1 connected.

Furthermore, the axial piston machine 18 the third embodiment, a second adjustment, which is the pivoting cradle 2 axially to the shaft 4 can move. The axial displacement of the pivoting cradle 2 can be pneumatic, electrical, mechanical or other actuators. The pivoting cradle 2 has a surface 22 on, on the pistons 12 . 120 lie in such a way that between the pistons 12 . 120 and the swivel cradle 2 Compressive forces can be transmitted. The axial displacement of the pivoting cradle 2 takes place via an axial displacement of the pivotal rolling bearing by the second adjusting device.

The axial piston machine 18 The third embodiment may, in the standard mode, as described in the other embodiments, a pivoting β exert to about 15-17 ° and thus reach the critical angle in standard operation.

In special operation, the pivoting cradle 2 by the second adjusting device axially in the direction of the piston drum 7 away adjusted. Since the piston drum 7 not moved axially and the first adjustment 3 has reached its maximum possible deflection, the upper piston moves 12 at the highest point still further out of his cylinder 21 as in standard mode and the piston 120 in the low point takes almost the same position as in the standard mode, so that the displacement of the axial piston machine 18 increases and the torque increases. The upper piston 12 is therefore overstretched and the pivoting β increases in comparison to the standard operation and is for example 20 °.

Another embodiment, not shown, has a support 11 in a piston drum 7 on, with the piston drum 7 axially fixed and non-rotatable with the shaft 4 connected and the support 11 axially displaceable in the piston drum 7 is arranged. The axial displacement of the support 11 via a second adjustment. The second adjusting device can, for example, in the piston drum 7 be arranged.

Another not shown embodiment of an axial piston machine has a split pivot cradle 2 on, which has a similar operation, as the pivoting cradle of the second embodiment. The difference is that the split pivot cradle 2 is formed of twisted conical disks. The conical disks are moved by the second adjusting device and ensure an increase in the absorption volume of the axial piston machine 18 ,

Another not shown embodiment of an axial piston machine has a split pivot cradle 2 on, which has a similar operation, as the pivoting cradle of the second embodiment. The difference is that the split pivot cradle 2 from one divided pivoting cradle is formed. An upper part of the pivoting cradle is moved by the second adjusting device and ensures an increase in the absorption volume of the axial piston machine 18 ,

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 102011005356 [0003]
• DE 102010038651 [0004]

Claims (8)

Axial piston machine ( 18 ) with housing ( 1 ) for the pump and / or motor operation with variably adjustable absorption volume, with a by a first adjustment ( 3 ) within a first adjustment device ( 3 ) predetermined angular range pivoting pivoting cradle ( 2 ), which has at least one surface ( 22 ) and a rotationally fixed on an axis ( 24 ) arranged piston drum ( 7 ) with in the piston drum ( 7 ) arranged piston ( 12 . 120 ), the pistons ( 12 . 120 ) on the surface ( 22 ) of the pivoting cradle ( 2 ) in such a way that between the pistons ( 12 . 120 ) and the pivoting cradle ( 2 ) Pressure forces can be transmitted, characterized in that the axial piston machine ( 18 ) a second adjusting device ( nine . 16 ) which is movable such that the displacement volume of the axial piston machine ( 18 ) in addition to the first adjusting device ( 3 ) variably adjustable absorption volume is variable. Axial piston machine ( 18 ) according to claim 1, characterized in that the surface ( 22 ) of the pivoting cradle ( 2 ) and / or that a support ( 11 ) for the pivoting cradle ( 2 ) by the second adjusting device ( nine . 16 ) is movable. Axial piston machine ( 18 ) according to one of the preceding claims, characterized in that the support ( 11 ) in the piston drum ( 7 ) is arranged and the piston drum ( 7 ) or the support ( 11 ) by the second adjusting device ( nine ) is axially movable. Axial piston machine ( 18 ) according to one of the preceding claims, characterized in that the second adjusting device ( nine ) indirectly on the housing ( 1 ) or in the piston drum ( 7 ) is arranged Axial piston machine ( 18 ) according to one of claims 1 or 2, characterized in that the pivoting cradle ( 2 ) is formed in several parts. Axial piston machine ( 18 ) according to claim 5, characterized in that the pivoting cradle ( 2 ) a pivoting body ( 200 ) and one in the pivoting body ( 200 ) arranged flyer ( 17 ) with the surface ( 22 ), wherein the pivoting plunger ( 17 ) by the second adjusting device ( 16 ) is movable. Axial piston machine ( 18 ) according to one of claims 5 or 6, characterized in that the second adjusting device ( 16 ) in the pivoting cradle ( 2 ) is arranged. Hydraulic hybrid powertrain with an axial piston engine ( 18 ) according to one of claims 1 to 7.

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