DE102010006414A1 - Oiling system module for cam shaft adjustment system, has valve support for positioning control valve, where each valve support has discharge opening for pressure balance - Google Patents

Abstract

The oiling system module (1) has a valve support (11) for positioning control valve, where each valve support has a discharge opening (17) for the pressure balance and another multiple discharge openings (19,21) for the connection at pressure chambers of a cam shaft verse plate, and oiling system line (15) connected to each valve support. An accumulator (13) is provided, which is attached to the oiling system line at the input side.

Description

Field of the invention

The invention relates to an oil supply module for a camshaft adjusting system comprising at least one valve receptacle for positioning a respective control valve, wherein the or each valve receptacle has a first outlet for pressure equalization, and wherein the or each valve receptacle is associated with a number of other outlets for connection to pressure chambers of a camshaft adjuster , as well as an oil supply line connected to the or each valve seat. Furthermore, the invention relates to a camshaft bearing unit for a camshaft adjusting system, comprising a bearing module with at least one receiving opening for supporting a camshaft and with an aforementioned oil supply module.

An oil supply module of the type mentioned can be used in a camshaft adjustment system to supply a hydraulic phaser for driving with oil. In this case, at least one valve receptacle for receiving the control valve for the controlled admission of the pressure chambers is provided.

Background of the invention

A camshaft adjusting system comprises at least one camshaft adjuster and an oil supply module. For oil supply usually a suitably designed device for supporting the camshaft is provided. About this storage oil is brought via the camshaft in the pressure chambers of the camshaft adjuster. One speaks also of a rotary transformer. The camshaft adjustment system is used for the targeted adjustment of a camshaft, which, for example, the performance of an internal combustion engine can be increased or the consumption can be reduced.

By means of the camshaft adjuster, the phase position between the camshaft and a crankshaft in an internal combustion engine is adjusted specifically. In order to achieve an adjustment, the camshaft adjuster must be supplied with a hydraulic fluid, such as oil. For this purpose, the camshaft adjuster has a rotatably connected to the crankshaft stator and a rotor held in this stator. The rotor is in turn rotatably connected to the camshaft and can be adjusted relative to the stator. The adjustment of the rotor is then caused by an application of pressure chambers formed in the stator with oil.

From the EP 1 249 582 A2 An internal combustion engine with an oil supply module is known. The internal combustion engine has two camshafts arranged side by side on the cylinder heads, one of which is designed for the input side and for the outlet side. The camshafts are each actuated by a hydraulic camshaft adjuster.

The oil supply module according to the EP 1 249 582 A2 has two valve receptacles for receiving in each case a control valve, via which the pressure chambers can be acted upon within a camshaft adjuster with oil. The oil supply module is mounted on the cylinder head of the internal combustion engine. For this purpose, the control valves are arranged in a space-saving manner on a common longitudinal axis extending transversely to the longitudinal axes of the camshafts.

The oil supply of the valve seats and thus the camshaft adjuster is ensured by incorporated in the cylinder head cover and in the valve seats pressure medium lines, which are connected to the camshaft. Via the pressure medium lines and arranged in these lines channels takes place starting from the control valves, the pressurization of the pressure chambers with oil.

An embodiment according to the EP 1 249 582 A2 offers a space-saving arrangement of the control valves, which is in view of the ever smaller free space in the engine compartment of interest. However, the oil supply module designed for mounting on the rotary transformer leaves no room for the attachment of additional control components.

Object of the invention

It is therefore a first object of the invention to provide a comparison with the prior art improved oil supply module, which still offers an expanded function by utilizing existing space.

A second object of the invention is to provide a camshaft bearing unit with a correspondingly improved oil supply module.

Solution of the task

The first object of the invention is achieved by an oil supply module with the feature combination according to claim 1.

Accordingly, the oil supply module for a camshaft adjusting system comprises at least one valve receptacle for positioning a respective control valve, wherein the or each valve receptacle has a first outlet for pressure equalization, and wherein the or each valve receptacle is associated with a number of further outlets for connection to pressure chambers of a camshaft adjuster, and an oil supply line connected to the or each valve receptacle. It is provided that a pressure accumulator is included, which is connected on the input side to the oil supply line.

Due to the limited space in the engine compartment, the expert assumes up to the present time that the expansion of the functions of an oil supply module by the attachment of additional components only with additional space requirement is possible. In particular, the need for applying a camshaft adjuster with oil control valves already occupy a large part of the available space.

However, the invention recognizes here that this problem can be avoided by designing an oil supply module which comprises a pressure accumulator which is connected there as part of the oil supply module to the already existing oil supply line. The pressure accumulator can thus be integrated into the oil supply module. The pressure accumulator can in particular have only a small volume to compensate for low pressure fluctuations, so that it requires only an insignificant additional space as an integrated part of the oil supply module.

An oil supply module with an integrated pressure accumulator makes it possible to compensate for pressure fluctuations within a camshaft adjustment system, without significantly increasing the need for installation space.

The oil supply module is supplied with oil via a pressure line communicating with the pressure side of the oil supply system of the internal combustion engine. The oil is pumped by a pump from an oil reservoir, such as an oil pan, via the pressure line and the oil supply line in the pressure accumulator and the valve seats and can thus be used to adjust the camshaft.

The pressure accumulator as part of the oil supply module can be introduced, for example in the form of a bore, in particular as a cylinder, in the oil supply module. In addition, the pressure accumulator with a movable biased element, for example, a displaceable piston may be formed. However, this embodiment is not absolutely necessary, since even a "non-biased" oil reservoir is able to compensate for pressure fluctuations within a certain bandwidth in the short term. By applying oil through the oil supply line, the piston can be moved against a bias. The accumulator thus takes over the function of storing pressurized oil, which is supplied by a pressure source. It offers the possibility of making the oil available when needed, for example in the case of a pressure drop in the system. Thus, in particular, the pressure supply of the hydraulic chambers is ensured when the pressure within the oil supply system subsides, as is the case, for example, in a hot idle. Also, other circumstances are conceivable in which the oil pressure in the system decreases. This is the case, for example, with leaks or high lubricant requirements due to special operating conditions of the internal combustion engine.

The oil supply module can be designed, for example, as a housing with at least one valve receptacle. In the valve receiving a particular electromagnetic control valve can be introduced. An electromagnetic control valve usually consists of an electromagnet with an electrical plug contact and a piston which is accommodated in the valve receptacle. The electrical plug contact may in particular be connected to a control module via which the control valve is regulated. With the help of the control valve, the supply and discharge of the hydraulic oil can be adjusted to and from the pressure chambers of a camshaft adjuster.

The different outlets of the oil supply module serve on the one hand to equalize the pressure in the oil supply module and on the other hand to connect to the pressure chambers of a camshaft adjuster. The pressure equalization outlets connect the oil supply module to the non-pressurized side of the oil supply system, especially to the open oil drain side. In particular, excess air can also escape. The outlets for supplying the pressure chambers are supplied with oil from the oil pressure line and can be pressed for example via the camshaft into the pressure chambers within a stator of the camshaft adjuster. The outlets are introduced, for example, as holes in the oil supply module and go within the body in particular in passages or channels that transport the oil. Overall, the outlets of the oil supply module in the mounted state with the corresponding lines, feedthroughs or outlets of a storage module communicate.

Advantageously, the oil supply module has an upper housing part and a lower housing part, wherein the pressure accumulator and the or each valve seat are arranged in the upper housing part and wherein in the lower housing part leadthroughs for the outlets and for the outlet to Pressure equalization are arranged. The training in two parts offers the possibility to easily introduce the complex lines and outlets. The housing parts may consist of a metallic material and be manufactured for example by means of a deep-drawing process or by casting. In particular, the housing parts are made of a plastic and can be produced for example by means of injection molding. As a result, the pressure accumulator introduced within the upper housing part, as well as the valve receptacles, can be produced in a process step, for example, in a mold intended for this purpose. In the individual parts, the outlets and passages can be drilled in after production. After the respective production of the two housing parts, the oil supply module can be assembled and the parts, for example via a screw connection, connected to each other.

Preferably, a vent line is included, to which the pressure accumulator is connected on the output side. The vent line on the pressure accumulator is used to escape the air when the pressure accumulator is filled with oil via the oil supply line. The vent line is formed in particular in the lower housing part of the oil supply module. About this line, the lower housing part, for example, connected to a corresponding vent line of a storage module

In an advantageous embodiment of the invention, two parallel juxtaposed valve receptacles to a longitudinal receptacle each comprise a control valve. Furthermore, it can be created particularly advantageous by the longitudinal recording of the control valves in two parallel juxtaposed valve seats space for the arrangement of the pressure accumulator. Thus, the positioning of the valve seats surprisingly makes space for the arrangement of a pressure accumulator accessible, which was not previously available.

In a particularly advantageous embodiment of the invention, the pressure accumulator is then introduced between the two valve seats, in particular formed as a hollow cylinder, which is aligned with its longitudinal direction substantially parallel to the valve seats. The space occupied by the pressure accumulator in this embodiment is provided in particular by the arrangement of the valve seats available. The fact that the valve seats are arranged parallel to each other, the resulting space can be used for the arrangement of the accumulator without additional space must be claimed.

The oil supply module is preferably designed for mounting on a bearing module of a camshaft. During assembly, in particular the outlets of the control valves are connected to the corresponding lines of the bearing module, via which the pressure chambers of the camshaft adjuster are supplied.

For this purpose, the outlets and lines of the oil supply module are formed to a communicating connection with corresponding outlets and lines of the storage module. The individual outlets are in the installed state, in particular via passages with corresponding lines of the storage module in connection. For example, the oil supply line of the oil supply module is connected to the discharge side of the oil supply module via the storage module.

In an advantageous embodiment of the invention, the pressure accumulator is designed as a force accumulator with a preloaded, movable piston. The piston may for example be made of a metallic material in a deep-drawing process. Within the piston, a spring may be arranged. Due to the pressure built up via the oil supply line, the piston is displaced against the restoring force of the spring within the pressure chamber to the outlet side of the pressure accumulator. When the pressure on the piston and thus on the spring decreases, the spring can relax and it is pressed oil from the pressure chamber in the oil supply line to compensate for the pressure loss. The oil is then available to the camshaft adjusters.

Conveniently, a bushing for receiving the piston is included. This embodiment is particularly advantageous when the oil supply module is made of a plastic. If the piston is moved back and forth within this plastic housing, any abrasion may occur on the inside of the housing due to the friction of the piston. Also, a plastic housing may not ensure the required tightness, so that the function is deteriorated. The liner can in particular be made of a metallic material such as aluminum or a steel and be injected, for example, in the production of the accumulator directly into the housing.

In a further advantageous embodiment of the invention, a number of check valves is included, which is arranged within the oil supply line. A check valve is used in particular for blocking one of the oil from the pressure storage reservoir space in the direction of the pressure source. In this way it is ensured that the oil from the pressure accumulator reaches the camshaft adjusters even with a pressure drop.

The second object of the invention is achieved by a camshaft adjusting system with the feature combination according to claim 11.

Accordingly, the camshaft bearing unit for a camshaft adjusting system comprises a bearing module having at least one receiving opening for supporting a camshaft, wherein the bearing module has a number of outlets and lines, and an oil supply module according to the aforementioned embodiments. It is provided that the oil supply module is mounted on the storage module and communicate that the outlets and lines of the oil supply module with the corresponding outlets and lines of the storage module.

The bearing module may be formed, for example, as a housing that can be mounted on a cylinder head or on a camshaft bearing cap. The storage module consists in particular of a metallic housing, preferably of aluminum. The connection of the bearing module with the oil supply module to a camshaft bearing unit is used to supply the camshaft adjuster with oil. The rotating camshaft is mounted in the receiving opening of the bearing module. Oil enters the camshaft via the bearing and from there into the camshaft adjuster. The storage module is thus designed in particular as a rotary transformer.

Preferably, the bearing module has two parallel aligned receiving openings for receiving in each case a camshaft, for example, an intake and an exhaust camshaft on. These camshafts are provided for actuating the intake valves and the exhaust valves of an internal combustion engine.

Advantageously, the pressure accumulator is connected via the oil supply line to the storage module. The oil supply line of the oil supply module thus communicates via the bearing module with the pressure side of the oil supply system.

In a further advantageous embodiment of the invention, the or each receiving opening has a number of circumferential grooves surrounding the inner circumference, which communicate via passages with the outlets of the valve receptacles of the oil supply module. The annular grooves are supplied in particular via passages or the outlets of the valve seats of the oil supply module with oil. Oil flows via these cam grooves via the camshaft into the rotating pressure chambers of the camshaft adjuster.

Preferably, the storage module comprises a vent line which communicates with the output side of the pressure accumulator and with the outlets for connection to pressure chambers of a camshaft adjuster. The vent line is used for oil supply from the valve seats and for venting the pressure accumulator. The vent line is preferably introduced into the lower housing part and offers the possibility of pressure equalization via the discharge of excess air.

Further advantageous embodiments can be found in the subclaims directed to the camshaft bearing unit, wherein the advantages mentioned for the oil supply module can be transferred analogously.

Short description of the drawing

In the following, embodiments of the invention will be explained in more detail with reference to a drawing. Showing:

1 a two-part oil supply module for a camshaft adjusting system in a three-dimensional representation,

2 a two-part bearing module of a camshaft adjustment system in a three-dimensional representation,

3 a longitudinal section through a camshaft adjusting system with an oil supply module according to 1 and a storage module according to 2 .

4 a cross section through a camshaft adjusting according to 3 , and

5 a front view of the camshaft adjusting system according to the 3 and 4 ,

Identical components in the individual exemplary embodiments are given the same reference numerals below.

Detailed description of the drawing

In 1 is a two-part oil supply module 1 for a camshaft adjustment system in a three-dimensional view. The oil supply module 1 is directly on a bearing module of a camshaft, which in 2 can be seen, mounted and serves to control the oil supply of the hydraulic chambers of a camshaft adjuster. A detailed representation of the corresponding camshaft adjustment system can 3 and 4 be removed.

The oil supply module 1 is made entirely of a plastic and includes a Housing top 3 and a housing lower part 5 , The upper housing part 3 and the lower housing part 5 are made separately. For mounting the housing parts 3 . 5 over a number of holes 7 . 9 connected with each other.

In the upper housing part 3 are two parallel valve seats 11 provided for longitudinal reception of at least the valve member in each case a control valve, not shown. The valve seats 11 are in the upper housing part 3 Shaped between the valve seats 11 extends an accumulator 13 , which is parallel to the valve seats 11 also in the longitudinal direction within the housing upper part 3 is arranged.

The accumulator 13 is as a hollow cylinder in the upper housing part 3 molded and used to store oil in order to make it available again when needed. For this purpose, the pressure accumulator 13 on the input side of an oil supply line 15 connected, which via the storage module according to 2 connected to the pressure side of an oil pump. This is done via the appropriate transmission 15 in the housing lower part 5 , That through the oil supply line 15 Pumped oil is poured over one in the top of the housing 3 of the oil supply module 1 branching of the oil supply line 15 to the valve seats 11 as well as the accumulator 13 forwarded.

Because of the valve seats 11 for longitudinal recording of each control valve are arranged side by side in parallel, it is possible to the pressure accumulator between the two valve seats 11 to arrange and so already existing and accessible by the arrangement of the control valves space 13 to use. The valves themselves then extend parallel to the oil reservoir and to the underlying in the assembled state camshafts. This allows the oil supply module 1 be mounted on a cylinder head or on a bearing module, where existing space between two parallel camshafts is used.

In the valve seats 11 , in which in each case the valve sides of the control valves are in the installed state, the oil is switched to control a camshaft adjuster. For this purpose, the valve seats 11 on the one hand an outlet 17 for oil supply as well as two outlets 19 . 21 for connection to pressure chambers of a camshaft adjuster. These outlets 17 . 19 . 21 are each as holes through the housing base 5 carried what was in 1 easy to recognize.

The control valves are designed as electromagnetic control valves whose valve side within the valve seats 11 is included. The valve side is connected to an electromagnet, which has an electrical plug-in contact on its free end face. This plug contact can be connected to a control module.

The individual outlets 17 . 19 . 21 in the housing lower part 5 of the oil supply module 1 as well as the oil supply line 15 and the vent line 23 communicate via corresponding outlets and lines of the storage module according to 2 with the corresponding pressure chambers of the camshaft adjuster as well as with the pressure side of the oil pump or the non-pressurized side of the oil supply system.

The vent line 23 extends from the output side of the pressure accumulator 13 to the passage 18 of the housing base 5 over which the vent line 23 is connected to the corresponding venting or Ölabfuhrleitung the storage module.

A storage module 31 on which the oil supply module 1 can be fastened directly is in 2 to see. The storage module 31 is used as part of a camshaft adjustment system or as part of a camshaft bearing unit. The storage module 31 is used for the storage of two parallel camshafts, which in 2 not to be seen. For this purpose, the storage module 31 two parallel receiving openings 33 on that in the housing of the storage module 33 are introduced. The housing of the storage module 31 consists of an upper housing part 35 and a housing lower part 37 , Both housing part 35 . 37 are made of aluminum.

The oil from the mounted oil supply module 1 passes over the outlets given as passages 19 . 21 over the connections 39 . 41 of the upper housing part 35 in two annular grooves 43 . 45 inside the intake openings 33 , The ring grooves 43 . 45 are thus beyond the outlets 19 . 21 the valve seats 11 of the oil supply module 1 supplied with oil.

The ring grooves 43 . 45 communicate via the camshaft with the two pressure chambers of a camshaft adjuster. Via the rotor connected to the camshaft, the oil enters the respective pressure chamber of the camshaft adjuster and can thus ensure the adjustment of the rotor within a stator.

For oil removal from the valve seats 11 and for venting the pressure accumulator 13 is the storage module 31 continue with a vent line 47 provided by the passage 18 , according to those in 1 , with the output side of the pressure accumulator 13 of the oil supply module 1 communicated.

In 3 is a section of a camshaft adjustment system 61 with an oil supply module 1 according to 1 and the upper housing part 35 of the storage module 31 according to 2 to see. The section corresponds to the plane BB according to the 1 and 2 , The oil supply module 1 and the storage module 31 are as a camshaft bearing unit 61 designated.

Due to the representation of the two in the receiving openings 33 of the storage module 31 stored camshafts 63 only one camshaft 63 to see. Both camshafts 63 are each with the rotor of a camshaft adjuster 65 connected, each of which can be connected via a pulley with a crankshaft. The camshaft 63 has to supply oil to the hydraulic chambers of the camshaft adjuster 65 counter-grooves 66 . 67 the with the ring grooves 43 . 45 inside the intake openings 33 interact.

The accumulator 13 of the oil supply module 1 is between the two valve seats 11 arranged. On average, its structure is clearly visible. The accumulator 13 is between the two valve seats 11 introduced and formed as a hollow cylinder, with its longitudinal direction parallel to the valve seats 11 is aligned. The accumulator 13 is as an energy store with a preloaded, movable piston 68 and a spring 69 educated. Inside the pressure accumulator 13 is stored oil, which can be provided if necessary.

When oil pressure is present, the piston 68 of the accumulator 13 moved against the spring force. In pressure fluctuations, oil from the accumulator 13 via the oil supply line 15 made available. This will be the function of the camshaft adjuster 65 continues to be guaranteed. The piston 68 moves inside a bushing 71 made of aluminum and in the manufacture of the upper housing part 3 of the oil supply module 1 injected into this. The bush 71 improves the sealing and Abriebeigenschaften the plastic-made housing upper part 3 of the oil supply module 1 when the piston 68 and the spring 69 within the accumulator 13 to be moved.

In 3 good may be the connection between the oil supply module 1 and the storage module 31 via the oil supply line 15 be seen. The outlet side of the pressure accumulator 13 is over the vent line 23 not visible through the passage 18 with the vent line 47 of the storage module 31 connected.

Within the oil supply line 15 is a check valve 73 arranged. The check valve 73 is located from the pressure side in front of the branch point of the oil supply line 15 to the valve seats 11 and the accumulator 13 , The check valve 73 provides the oil supply to the hydraulic chambers of the camshaft adjuster 65 from the accumulator 13 sure if the pressure inside the oil supply system collapses.

In 4 is a cross section AA according to 3 of the camshaft adjusting system 61 shown. It is good from this sectional view, the supply of valve seats 11 with oil from the accumulator 13 via the oil supply line 15 visible, noticeable. They are both camshaft adjusters 65 to see the camshafts 63 and also the storage module 31 are hidden. The control valves 95 are as electromagnetic control valves 95 formed, whose oil-side part, so the piston 97 inside the valve seats 11 is included.

The control valves 95 are in the parallel juxtaposed valve seats 11 of the oil supply module 1 introduced and extend parallel to the camshafts 65 longitudinal. This allows the accumulator 13 between the two valve seats 11 be positioned in existing space. The plug contacts 98 are outside the oil-loaded valve seats 11 arranged.

The control valves 95 serve the switching of the oil supply. They dose the amount of oil that enters the pressure chambers of the phaser 65 is brought. In this way, the position of the rotor within the stator, the two parts of the camshaft adjuster 65 are, and thus the phase angle between the camshafts 63 and a crankshaft are selectively adjusted in an internal combustion engine.

The piston 97 on the oil side of the control valve 95 is with a spring 99 biased. Depending on the control via the control valve 95 can the piston 97 the outlet 19 or the outlet 21 of the oil supply module 1 release. The outlets 19 . 21 , each of which is to serve a separate chamber, are in 4 clearly visible. Furthermore, the outlet 17 for removing oil within the lower part of the housing 5 of the oil supply module 1 to recognize.

The oil supply line 15 is seen in their branched arrangement and you can see that they are the accumulator 13 with the pistons 97 the control valves 95 inside the valve seats 11 combines. Is via the oil supply line 15 Pressure builds up, the piston becomes 68 against the spring 69 pressed. The piston 68 is against the restoring force of the spring 69 within the accumulator 13 in Moved towards the exit side. The accumulator 13 picks up oil. For example, if there is a pressure drop in the oil supply line 15 enters, leaves the pressure on the piston 68 and thus on the spring 69 to. The feather 69 can relax and it gets stored oil from the accumulator 13 via the oil supply line 15 pressed. The accumulator 13 then helps to compensate for the resulting pressure loss and passes oil through the oil supply line 15 in the valve seats 11 ,

In 5 is a camshaft adjustment system 61 according to the 3 and 4 to be seen in a front view. This front view shows the position of the phaser 65 clear to each other. In particular, the skillful utilization of existing space by the oil supply module 1 recognizable. Neither the valve seats 11 still the accumulator 13 build up a lot. Otherwise, the so far to the 1 to 4 statements made analogously to the 5 be transmitted.

LIST OF REFERENCE NUMBERS

1

Oil supply module

3

Housing bottom

5

Housing top

7

drilling

9

drilling

11

valve seats

13

accumulator

15

Oil supply line

17

Outlet for pressure equalization

18

by line

19

outlet

21

outlet

23

vent line

31

storage module

33

receiving opening

35

Housing top

37

Housing bottom

39

connection

41

connection

43

ring groove

45

ring groove

47

vent line

61

Camshaft bearing unit

62

Cam Phaser System

63

camshaft

65

Phaser

66

counter-groove

67

counter-groove

68

piston

69

feather

71

liner

73

check valve

95

control valve

97

piston

98

plug contact

99

feather

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

• EP 1249582 A2 [0005, 0006, 0008]

Claims (15)

Oil supply module ( 1 ) for a camshaft adjusting system ( 61 ), comprising at least one valve seat ( 11 ) for positioning each of a control valve ( 95 ), wherein the or each valve seat ( 11 ) a first outlet ( 17 ) for pressure equalization, and wherein the or each valve receptacle ( 11 ) a number of further outlets ( 19 . 21 ) for connection to pressure chambers of a camshaft adjuster ( 65 ), and one with the or each valve receptacle ( 11 ) connected oil supply line ( 15 ), characterized in that a pressure accumulator ( 13 ), the input side to the oil supply line ( 15 ) connected. Oil supply module ( 1 ) according to claim 1, characterized by an upper housing part ( 3 ) and by a housing lower part ( 5 ), wherein in the upper housing part ( 3 ) the accumulator and the or each valve seat ( 11 ) are arranged and wherein in the housing lower part ( 5 ) Implementation of the outlets ( 19 . 21 ) for connection to pressure chambers and for the outlet ( 17 ) are arranged for pressure equalization. Oil supply module ( 1 ) according to claim 1 or 2, characterized in that a vent line ( 23 ) to which the pressure accumulator ( 13 ) is connected on the output side. Oil supply module ( 1 ) according to one of the preceding claims, characterized in that two parallel juxtaposed valve seats ( 11 ) to a longitudinal receptacle each of a control valve ( 95 ) are included. Oil supply module ( 1 ) according to claim 4, characterized in that the pressure accumulator ( 13 ) between the two valve seats ( 11 ) is introduced, in particular as a hollow cylinder is formed, with its longitudinal direction substantially parallel to the valve seats ( 11 ) is aligned. Oil supply module ( 1 ) according to one of the preceding claims, characterized in that it can be mounted on a storage module ( 31 ) a camshaft ( 63 ) is trained. Oil supply module ( 1 ) according to claim 6, characterized in that the outlets ( 17 . 19 . 21 ) and lines ( 15 . 23 ) to a communicating connection with corresponding outlets ( 39 . 41 ) and lines ( 15 . 47 ) of the storage module ( 31 ) are formed. Oil supply module ( 1 ) according to one of the preceding claims, characterized in that the pressure accumulator ( 13 ) as an energy store with a preloaded, movable piston ( 68 ) is trained. Oil supply module ( 1 ) according to one of the claims 8, characterized in that a bushing ( 71 ) for receiving the piston ( 68 ) is included. Oil supply module ( 1 ) according to one of the preceding claims, characterized in that a number of non-return valves ( 73 ) within the oil supply line ( 15 ) is arranged. Camshaft bearing unit ( 61 ) for a camshaft adjusting system ( 62 ), comprising a storage module ( 31 ) with at least one receiving opening ( 33 ) for supporting a camshaft ( 63 ), whereby the storage module ( 31 ) a number of outlets ( 39 . 41 ) and lines ( 15 . 47 ), and an oil supply module ( 1 ) according to one of claims 1 to 10, wherein the oil supply module ( 1 ) on the storage module ( 31 ) and the outlets ( 17 . 19 . 21 ) and lines ( 15 . 23 ) of the oil supply module ( 1 ) with the corresponding outlets ( 39 . 41 ) and lines ( 15 . 47 ) of the storage module ( 31 ) communicate. Camshaft bearing unit ( 61 ) according to claim 11, wherein the storage module ( 31 ) two parallel receiving openings ( 33 ) for receiving in each case a camshaft ( 63 ) having. Camshaft bearing unit ( 61 ) according to claim 11 or 12, wherein the accumulator ( 13 ) via the oil supply line ( 15 ) with the storage module ( 31 ) connected is. Camshaft bearing unit ( 61 ) according to one of claims 11 to 13, wherein the or each receiving opening ( 33 ) a number of the inner circumference circumferential annular grooves ( 43 . 45 ), which are passed through passages ( 18 ) with the outlets ( 19 . 21 ) of the or each valve seat ( 11 ) of the oil supply module ( 1 ) communicate. Camshaft bearing unit ( 61 ) according to one of claims 11 to 14, wherein the storage module ( 31 ) a vent line ( 47 ) connected to the output side of the pressure accumulator ( 13 ) and with the outlets ( 19 . 21 ) of the oil supply module ( 1 ) for connection to pressure chambers of a camshaft adjuster ( 65 ) communicates.

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