EP3219941A1 - Hydraulic slider valve for a vane cell camshaft adjuster for a camshaft - Google Patents
Hydraulic slider valve for a vane cell camshaft adjuster for a camshaft Download PDFInfo
- Publication number
- EP3219941A1 EP3219941A1 EP17158314.9A EP17158314A EP3219941A1 EP 3219941 A1 EP3219941 A1 EP 3219941A1 EP 17158314 A EP17158314 A EP 17158314A EP 3219941 A1 EP3219941 A1 EP 3219941A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- hydraulic
- check valve
- working port
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims abstract description 4
- 238000006073 displacement reaction Methods 0.000 claims description 9
- 230000008961 swelling Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
- F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
- F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
- F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/34409—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear by torque-responsive means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
- F02D13/0215—Variable control of intake and exhaust valves changing the valve timing only
- F02D13/0219—Variable control of intake and exhaust valves changing the valve timing only by shifting the phase, i.e. the opening periods of the valves are constant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
- F01L2001/34433—Location oil control valves
Definitions
- the invention relates to a hydraulic valve, in particular for a Schwenkmotorversteller a camshaft of an internal combustion engine of a motor vehicle.
- a hydraulic valve in which a variable cam timing phaser has a piston, a plurality of check valves and channels from the feed chamber and the retard chamber to an opening in the spool.
- the piston which has at least two slide bodies separated by a central rod, is displaceably mounted within a bore in the rotor.
- hydraulic fluid flows from the feed chamber through the passage and the opening to the bore surrounding the central rod of the spool and through a check valve and the port to the passage to the retard chamber.
- hydraulic fluid from the retard chamber flows through the passage and the aperture to the bore surrounding the central rod of the spool and through a check valve and the port to the passage to the feed chamber.
- An object of the invention is to provide a hydraulic valve which allows a good control behavior of a Schwenkmotorverstellers in a simple and compact design.
- Another object of the invention is to provide a Schwenkmotorversteller a camshaft, which has a good control behavior in a simple and compact design.
- a hydraulic valve in particular for a Schwenkmotorversteller a camshaft having a bushing with a longitudinally displaceably disposed in a bore piston, a supply port for supplying a hydraulic fluid, at least a first working port and a second working port, and at least one tank drain for discharging of the hydraulic fluid.
- the first working connection and the second working connection can be connected by displacing the piston via at least one check valve alternately with one another and / or with the supply connection and / or with the at least one tank outflow.
- the at least one check valve is arranged in an inner region of the piston.
- the check valve comprises a band-like flexible member and, in an open position, releases communication between an outside of the piston and the inside thereof.
- An inside of the piston has an outer stop for the check valve, so that the element by a on the outside of the Piston prevailing hydraulic pressure, in particular a pulse-like hydraulic pressure, can be opened inwardly.
- Pulsed hydraulic pressures are on the one hand alternating moments on the hydraulic piston, which both temporarily have a positive, variable component and a temporary negative component.
- swelling moments are those moments which, although they change in magnitude, remain over a longer period of several milliseconds in the same sign range of the torque characteristic.
- a motor hydraulic circuit of a camshaft adjuster with a counter-rotating hydraulic piston with at least two hydraulic chambers acts an external moment that acts either alternately or swelling.
- the hydraulic circuit performs, by a hydraulic pump removable, different pressurization of the counter-rotating hydraulic chambers a change in position.
- a hydraulic Weichenver ein preferably embodied by a valve which directs the pressurization of the hydraulic fluid to the piston, the negative portion of the alternating torque is used to change the hydraulic piston in position.
- the swelling portion of the moment is hidden by other means, such as check valves.
- each hydraulic connection paths can be provided from a chamber of one type to the working port for the other type of chamber.
- the valve can pass the hydraulic pressure, since it is possible to divert the negative portion of the alternating torque on the one working connection for one chamber type via at least one check valve to the second working connection of the other type of chamber. It can be done alternately.
- the Pressurization of the pressurized port forwarded to the second working port.
- the alternate passage of the hydraulic medium is carried out from both the one chamber and the other chamber to the corresponding counter-rotating chamber.
- the function of the check valves can be referred to as a bypass, which feed only the negative part of the alternating force in front of the camshaft adjuster again.
- a suitable place of re-injection may be the supply connection of the camshaft adjuster.
- the check valve, or if there are a plurality of check valves, the check valves, can then be arranged so that only in the direction of the pressure side of the camshaft adjuster a passage of the hydraulic pressure originating from the chambers of the piston, is made possible.
- the at least one check valve of the hydraulic valve is arranged in an inner region of the piston in order to allow the most compact possible construction of the hydraulic valve.
- the check valve is designed as a band check valve, which comprises a band-like flexible element, for example an annular, overlapping band of spring steel, as a closing element of the check valve.
- a flexible band has the necessary spring tension to oppose against hydraulic pressure from the outside a resistance, so that the band yields only when a certain pressure threshold is exceeded, can bend inwards and opens the valve cross-section.
- the pressure threshold can be adjusted by selecting the material and the thickness of the material.
- the inside of the piston constitutes an outer stop for the band against which the band bears, as long as the hydraulic pressure is below the threshold pressure, and the check valve is thus closed. When the pressure threshold is exceeded, the band lifts off from the stop inwardly, and opens the valve cross-section inwardly, so that hydraulic fluid can flow from an outer side of the piston into the inner region.
- the check valve is opened by the hydraulic pressure of the chamber to be emptied of the camshaft adjuster inwardly, the hydraulic pressure is maintained in the chamber to be emptied.
- the chamber to be emptied is so through the Check valve sealed off and blocked against inflowing hydraulic fluid. The check valve thus prevents a pressure surge movement of the piston of the hydraulic valve.
- the first working port and the second working port may each be assigned a check valve in the interior of the piston.
- each associated check valves can be opened inwardly by pressure pulses both on the first working port and on the second working port and so the pressure pulses are forwarded to the second or the first working port to the function of the alternating torques so low for the adjustment of the camshaft adjuster exploit.
- a first working position of the hydraulic valve may be provided, in which a first fluid path of the hydraulic fluid from the first working port via the first working port associated check valve to the second working port is open, and a second working position may be provided, in which a second fluid path the hydraulic fluid from the second working port is open to the first working port via the check valve associated with the second working port.
- a third, so-called center position of the hydraulic valve in which the first working port and the second working port are closed independently of the check valves and are not connected to the check valves.
- This third position thus corresponds to a control position or middle position of the hydraulic valve.
- a further fluid path of the hydraulic fluid can be provided from the outside of the piston to the at least one check valve via bores in the piston.
- the hydraulic fluid can press on the holes in the wall of the piston on the ribbon-like flexible element of the check valve and thus open the check valve inwards.
- the band can abut against the stop on the inside of the piston and is pressed only by hydraulic pressure from outside to inside and thereby opened.
- the piston radially circumferential cam for supplying the holes with hydraulic fluid. This can be ensured that the attacking hydraulic pressure acts radially circumferentially in the same way on the outside of the piston and the hydraulic pressure no rotation of the piston is initiated. About the control groove, the hydraulic pressure can then be passed through the holes in the wall of the piston on the tape of the check valve and actuate this.
- the outer side of the piston in the region of the bores may be configured in each case partially as a flat surface.
- the outer side of the piston may be designed in sections as flat surfaces, which flattenings of the cylindrical outer wall represent of the piston, which adjoin each other circumferentially.
- the area values are conveniently balanced so that the piston is not rotated or moved axially by hydraulic pressure applied.
- a bore for supplying the check valve with the hydraulic pressure is provided in each area.
- the band-like flexible element may be secured against displacement in the longitudinal direction by means of a fixation element comprising the element axially.
- the band-like flexible member is thus held axially in one position and can move only radially through the hydraulic pressure applied to open the check valve inwardly or close by re-applying to the inside of the piston.
- the check valve is fixed as a whole in the interior of the piston.
- the check valve may be formed with at least one sleeve as an integrated unit which comprises the band-like flexible element and the fixing element, wherein the band-like flexible element biased against an inner side of the sleeve.
- the check valve can be pre-assembled as a mounting unit and particularly easy to arrange in the interior of the piston in the axially desired position.
- the stop of the band-like flexible element depending on the design of the band, at least be predetermined by the inside of the sleeve.
- the assembly of the check valve in the piston is very favored by this solution.
- two sleeves may be provided which comprise the band from both sides in the longitudinal direction.
- the band-like flexible element can be secured in a bore of the piston arranged with at least one annular fixing element against displacement in the longitudinal direction.
- the band is arranged directly in the interior of the piston and is fixed only by a fixing element in the axial direction, so that the band also in the function as a check valve when it is pressed inward, do not move axially can.
- the annular fixing element is equipped with a certain thickness or with radially extending fixing elements and / or still has an inner stop, which prevents the band beyond the annular fixing element can still move axially.
- the fixing element may be cylindrical or hollow cylindrical and axially spaced having two regions with radially projecting projections, wherein the ribbon-like flexible member is disposed around the fixing member and between the two regions and is axially fixed by the projections on the fixing element.
- These radially projecting projections may be configured in the form of webs or serrations which axially fix the band and are radially outward or inward in the longitudinal direction before and after the band. Already a lead before and after the band can fulfill this function. For reasons of symmetry, it is advantageous to provide three or more projections on the fixing element.
- the fixing element can form a stop for the band-like flexible element inwards.
- the stop inwards can cause a limitation of the effective hydraulic pressure, which is forwarded from one working port to the other work port. Also, such a stable mounting of the band-like flexible element in the integrated unit of the check valve is favored and the position of the band is maintained even at higher pressure surges.
- the radially projecting projections may be provided for supporting the at least one sleeve.
- the sleeve can be held by the radially projecting projections in the axial direction and supported in the radial direction, which favors the formation of a mounting unit for the check valve.
- the fixing element in the sleeve itself is firmly anchored.
- a further check valve may be provided with a band-like flexible element at the supply connection within the piston, wherein the further check valve can be opened inwardly by a hydraulic pressure prevailing at the supply connection.
- the invention relates in another aspect to a Schwenkmotorversteller a camshaft comprising a hydraulic valve, wherein a first working port is connected to a first pressure chamber of the Schwenkmotorverstellers and a second working port is connected to a second pressure chamber of the Schwenkmotorverstellers.
- the first working connection and the second working connection can be connected by displacing the piston via at least one check valve alternately with one another and / or with the supply connection and / or with the at least one tank outflow.
- the at least one check valve is arranged in an inner region of the piston.
- the check valve comprises a band-like flexible member and, in an open position, releases communication between an outer side of the piston and the inner portion thereof, an inner side of the piston having an outer stopper for the check valve, so that the member is dominated by an outer side of the piston Hydraulic pressure, in particular a pulse-like hydraulic pressure, can be opened inwardly.
- the hydraulic valve is intended to pass through the torque fluctuations, which can occur both as alternating torques and as swelling moments, with the hydraulic pressure from the supply connection, in particular in the case of the pivoting motor-like camshaft adjuster.
- Working connections that lead to the chambers of the hydraulic piston, depending on the switching position of the hydraulic piston within the valve alternately switched through or interrupted. Without torque fluctuations, the valve temporarily directs the hydraulic pressure in one of the chambers of the Schwenkmotorverstellers. In the hydraulic circuit creates another hydraulic pressure, which comes from the negative portion of the alternating torque.
- the hydraulic pressure resulting from the negative portion of the alternating torque is always at least via a check valve ausleitbar. The discharged pressure is passed on to the second working connection.
- the described condition is a special condition because most of the time the pressurization of the Supply connection is derived, is forwarded to the appropriate work connection. There is a wider use of pressures within the hydraulic circuit beyond the steady-state pressure.
- the bypass line resulting from the check valve takes advantage of the negative moment, while the standard adjustment is ensured by the selected standard position of the hydraulic piston. In addition to an advantageous energetic use of additional pressure resources, the feedback quality and even the adjustment speed are evened out or improved by this feedback.
- check valves are used for passing the negative portion of the alternating torque.
- the check valves are arranged to prevent hydraulic fluid flow from the supply port to the working port when the pressure resulting from the amount of the negative portion of the alternating torque exceeds the absolute pressure of the supply port.
- the valves work as directional throttles, so to speak.
- FIG. 1 shows a hydraulic valve 12 for adjusting a Schwenkmotorverstellers 14 according to an embodiment of the invention in a first operating position 54, shown in a longitudinal section.
- the hydraulic valve 12 comprises a bushing 15 with a piston 44 displaceably arranged in a bore 42 along a longitudinal direction L.
- the piston 44 is supported on the bush 15 by a helical compression spring 24.
- the bushing 15 has a supply port 30 for supplying a hydraulic fluid, a first working port 34 and a second working port 36, and two tank outlets 38, 40 for discharging the hydraulic fluid.
- the first working port 34 and the second working port 36 can be connected by displacing the piston 44 via at least one check valve 46, 48 alternately with each other and / or with the supply port 30 and / or with the at least one tank drain 38, 40.
- the two check valves 46, 48 are arranged in the inner region 64 of the piston 44.
- the check valves 46, 48 comprise a band-like flexible element 80, which in an open position, a connection between the outer side 66 of the piston 44 and the inner region 64 releases.
- the inside 65 of the piston 44 has an outer stop for the check valves 46, 48, so that the element 80 can be opened inwardly by a hydraulic pressure prevailing on the outside 66 of the piston 44, in particular a pulse-like hydraulic pressure.
- a check valve 46, 48 in the inner region 64 of the piston 44 is assigned to each of the first working connection 34 and the second working connection 36.
- a further check valve 32 is provided with a belt-like flexible member 94 within the piston 44. This check valve 32 can also be opened inwardly by means of a hydraulic pressure prevailing at the supply connection 30.
- the band-like flexible element 94 is in this non-return valve 32 in the non-pressurized state in which the check valve 32 is closed, on the inner wall 20 of the sleeve 15 at.
- the check valve 46, 48 has a fixing element 82, which is designed as a hollow cylinder with laterally projecting projections 92.
- the ribbon-like flexible element 80 is axially fixed between the projections 92 and can only move radially.
- Two sleeves 84 comprise the fixing element 82 from both ends and are supported by the projections 92, wherein the band-like flexible member 80 biased partially against the inner side 88 of the sleeve 84 and so the non-return valve 46, 48 closes.
- the check valve 46, 48 is designed as a preassembled integrated unit 86, which can be mounted as a whole low in the inner region 64 of the piston 44.
- FIG. 1 the hydraulic valve 12 is shown in a first operating position 54, in which a first fluid path 52 of the hydraulic fluid from the first working port 34 via the non-return valve 46 associated with the first working port 34 to the second working port 36 is open.
- the check valve 46 can be opened by the pending at the first working port 34 hydraulic pressure.
- the check valve 46 itself is shown in the closed state with adjacent band-like flexible element 80.
- the fluid path 74 from the supply port 30 via the inner region 64 of the piston 44 to the second working port 36 is open.
- FIG. 2 shows the hydraulic valve 12 according to FIG. 1 in a middle position 57, in which the first working port 34 and the second working port 36 are closed independently of the check valves 46, 48. Both working ports 34, 36 are closed by the control piston 44, so that thereby there is no connection between the two working ports 34, 36 and the check valves 46, 48.
- FIG. 3 is the hydraulic valve 12 according to FIG. 1 in a second operating position 56, in which a second fluid path 72 of the hydraulic fluid from the second working port 36 via the second working port 36 associated check valve 48 to the first working port 34 is open.
- the check valve 48 can be opened by the pending at the second working port 36 hydraulic pressure.
- the check valve 48 itself is shown in the closed state with adjacent band-like flexible element 80.
- the fluid path 74 from the supply port 30 via the inner region 64 of the piston 44 to the first working port 34 is open.
- FIG. 4 shows a check valve 46 according to an embodiment of the invention in a closed function, shown in a longitudinal section.
- the check valve 46 has the fixing element 82, which may be cylindrical or hollow cylindrical in shape (in FIG FIG. 4 it is hollow cylinder-shaped) and axially spaced two areas with radially projecting projections 92 has.
- the ribbon-like flexible member 80 is disposed around the fixing member 82 and between the two portions, and fixed axially on the fixing member 82 by the projections 92.
- the band-like flexible element 80 is secured with the element 80 axially comprehensive fixation element 82 against displacement in the longitudinal direction L.
- Two sleeves 84 comprise the fixing element 82 from both ends and are supported by the projections 92, wherein the band-like flexible member 80 biased partially against the inner side 88 of the sleeve 84 and so the non-return valve 46, 48 closes.
- the check valve 46, 48 is designed as a preassembled integrated unit 86, which can be mounted as a whole low in the inner region 64 of the piston 44.
- the band-like flexible element 80 is biased on the inside 88 of the sleeves 84 and can be opened by hydraulic pressure from the outside.
- the fixing element 82 forms a stop for the band-like flexible element 80 inwards.
- FIG. 5 shows the check valve 46 according to FIG. 4 in an exploded view.
- the individual components of the check valve 46 are shown separately according to a mounting sequence: the fixing member 82 as a central component of the check valve 46, the ribbon-like flexible member 80 which is positioned between the projections 92 of the fixing member 82 and the two sleeves 84, which subsequently on the Projections 92 of the fixing element 82 are pushed from both ends.
- the ribbon-like flexible element 80 is pressed to something inside, so that the element 80 biased against the inside 88 of the sleeves 84 and closes the check valve 46 in a pressureless state. It is in the embodiment in FIG.
- each three projections 92 are shown equally distributed over the circumference of the fixing element 82, but it can also each four and more projections 92 may be arranged. Less than three projections 92 is also possible as long as the sleeves 84 can thus be supported on the fixing element 82.
- FIG. 6 is the check valve 46 according to FIG. 4 shown in an open function in a longitudinal section.
- the band-like flexible element 80 is pressed inwardly by externally applied hydraulic pressure and rests on the inner stop of the fixing element 82.
- the thus opened fluid paths 52 are in FIG. 6 shown with.
- the upper two fluid paths 52 in the drawing are shown in dashed lines, since they extend in front of or behind the plane of the drawing, since the projections 92 are cut in the plane of the drawing.
- FIG. 7 shows a hydraulic valve 12 according to another embodiment of the invention, shown in a longitudinal section.
- two check valves 46, 48 are used, which have only a band-like flexible element 80 which is secured in the bore 50 of the piston 44 with at least one annular fixing element 90 against displacement in the longitudinal direction L.
- the band-like flexible element 80 is biased in this embodiment in unpressurized, ie closed state of the check valve 46, 48 directly on the inside 65 of the inner region 64 of the piston 44 on one side to a stop of the bore 50 and is through the annular fixing element 90th , which is for example pressed into the bore 50, secured against displacement in the longitudinal direction L.
- FIG. 8 a hydraulic valve 12 is shown according to a further embodiment of the invention in a longitudinal section.
- the check valves 46, 48 have fixing elements 82 similar to those in the FIGS. 4 to 6 illustrated check valve 46, in which the ribbon-like flexible member 80 is disposed between axially spaced projections 92.
- the fixing element 82 is pressed directly into the bore 50 of the inner portion 64 of the piston 44, so that the ribbon-like flexible member 80 in the unpressurized, ie closed state of the check valve 46, 48 biased directly on the inside 65 of the inner region 64 is present.
- FIG. 9 shows a piston 44 of a hydraulic valve 12 according to an embodiment of the invention in an isometric view.
- the piston 44 has bores 62 for the hydraulic connection of the outer side 66 of the piston 44 with the inner region 64. Further, the piston 44 has bores 60 which form a further fluid path 75 of the hydraulic fluid from the outer side 66 of the piston 44 to the check valves 46, 48 in FIG Provide piston 44. Through these holes 60 arranged in the inner region 64 of the piston 44 check valves 46, 48 are acted upon by the hydraulic pressure.
- a at least partially on the outer side 66 of the piston 44 radially encircling control groove 68 is provided for supplying the holes 60 with hydraulic fluid, so that the hydraulic fluid on the outside 66 of the Piston 44 can penetrate via the cam 68 in the holes 60.
- FIG. 10 shows a piston 44 of a hydraulic valve 12 according to another embodiment of the invention, in which the hydraulic supply of the holes 60 is provided in other ways.
- the outer side 66 of the piston 44 in the region of the bores 60 in each case partially configured as a flat surface 70.
- the flat surfaces 70 are each provided coextensive, so that when pressurized thereby no unwanted movement of the piston 44 is triggered.
- FIG. 11 shows a Schwenkmotorversteller 14 of a camshaft 18 in a cross section.
- the Schwenkmotorversteller 14 is for cooperation with a example in the FIGS. 1 to 3 illustrated hydraulic valve 12, wherein a first working port 34 is connected to a first pressure chamber 9 of the Schwenkmotorverstellers 14 and a second working port 36 is connected to a second pressure chamber 10 of the Schwenkmotorverstellers 14.
- the first working port 34 and the second working port 36 by a displacement of the piston 44 via at least one check valve 46, 48, as shown in the FIGS. 4 to 6 is shown, alternately with each other and / or with the supply port 30 and / or with the at least one tank outlet 38, 40th connectable.
- the at least one check valve 46, 48 is arranged in an inner region of the piston 44.
- the check valve 46, 48 includes a band-like flexible member 80 and, in an open position, communicates between an outer side 66 of the piston 44 and its inner portion 64, with an inner side 65 of the piston 44 having an outer stop for the check valve 46, 48. so that the element 80 can be opened inwardly by a hydraulic pressure prevailing on an outer side 66 of the piston 44, in particular a pulse-like hydraulic pressure.
- the Schwenkmotorversteller 14 has a cylindrical stator 1 which is rotatably connected to the drive wheel 2.
- the drive wheel 2 is a sprocket over which a chain, not shown, is guided.
- the drive wheel 2 may also be a toothed belt wheel, via which a drive belt is guided as a drive element.
- the stator 1 is drivingly connected to the crankshaft.
- the stator 1 comprises a cylindrical stator base body 3, on the inside of which protrude webs 4 at equal intervals radially inwardly. Between adjacent webs 4 gaps 5 are formed, in, for example, via a in the FIGS. 1 to 3 controlled hydraulic valve 12 shown controlled, hydraulic fluid is introduced.
- the hydraulic valve 12 is designed as a decentralized valve, but can also be designed in one embodiment as a central valve. Between adjacent webs 4 protrude wings 6, which project radially outward from a cylindrical rotor hub 7 of a rotor 8. These wings 6 divide the spaces 5 between the webs 4 in each case in two pressure chambers 9 and 10th
- the webs 4 lie with their end faces sealingly against the outer circumferential surface of the rotor hub 7.
- the wings 6 in turn lie with their end faces sealingly against the cylindrical inner wall of the stator main body 3.
- the rotor 8 is rotatably connected to the camshaft 18. In order to change the angular position between the camshaft 18 and the drive wheel 2, the rotor 8 is rotated relative to the stator 1. For this purpose, depending on the desired direction of rotation, the hydraulic fluid in the pressure chambers 9 or 10 is pressurized, while the respective other pressure chambers 10 or 9 are relieved to the tank of the hydraulic fluid out. In order to pivot the rotor 8 counterclockwise relative to the stator 1 into the illustrated position, an annular first rotor channel in the rotor hub 7 is pressurized by the hydraulic valve 12. From this first rotor channel then lead further channels 11 in the pressure chambers 10. This first rotor channel is assigned to the first working port 34.
- the hydraulic valve 12 pressurizes a second annular rotor channel in the rotor hub 7.
- This second rotor channel is associated with the second working port 36.
- These two rotor channels are arranged with respect to a central axis 22 axially spaced from each other.
- the Schwenkmotorverstellers 14 is placed on the designed as a hollow tube 16 built camshaft 18th For this purpose, the rotor 8 is placed on the camshaft 18.
- the Schwenkmotorversteller 14 is by means of in FIG. 2 pivotable hydraulic valve 12 visible.
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Abstract
Die Erfindung betrifft ein Hydraulikventil (12), insbesondere für einen Schwenkmotorversteller (14) einer Nockenwelle (18), umfassend eine Buchse (15) mit einem in einer Bohrung (42) entlang einer Längsrichtung (L) verschiebbar angeordneten Kolben (44), einen Versorgungsanschluss (30) zum Zuführen eines Hydraulikfluids, wenigstens einen ersten Arbeitsanschluss (34) und einen zweiten Arbeitsanschluss (36), sowie wenigstens einen Tankabfluss (38, 40) zum Ableiten des Hydraulikfluids. Der erste Arbeitsanschluss (34) und der zweite Arbeitsanschluss (36) sind durch ein Verschieben des Kolbens (44) über wenigstens ein Rückschlagventil (46, 48) wechselweise miteinander und/oder mit dem Versorgungsanschluss (30) und/oder mit dem wenigstens einen Tankabfluss (38, 40) verbindbar. Das wenigstens eine Rückschlagventil (46, 48) ist in einem Innenbereich (64) des Kolbens (44) angeordnet, welches Rückschlagventil (46, 48) ein bandartiges flexibles Element (80) umfasst. Das Element (80) ist durch einen an der Außenseite (66) des Kolbens (44) herrschenden Hydraulikdruck, insbesondere einen pulsartigen Hydraulikdruck, nach innen öffenbar.The invention relates to a hydraulic valve (12), in particular for a Schwenkmotorversteller (14) of a camshaft (18) comprising a bushing (15) in a bore (42) along a longitudinal direction (L) slidably disposed piston (44), a Supply port (30) for supplying a hydraulic fluid, at least one first working port (34) and a second working port (36), and at least one tank outflow (38, 40) for discharging the hydraulic fluid. The first working port (34) and the second working port (36) are alternately with each other and / or with the supply port (30) and / or with the at least one tank drain by displacing the piston (44) via at least one check valve (46, 48) (38, 40) connectable. The at least one check valve (46, 48) is arranged in an inner region (64) of the piston (44), which check valve (46, 48) comprises a band-like flexible element (80). The element (80) can be opened inwardly by a hydraulic pressure prevailing on the outer side (66) of the piston (44), in particular a pulsed hydraulic pressure.
Description
Die Erfindung betrifft ein Hydraulikventil, insbesondere für einen Schwenkmotorversteller einer Nockenwelle einer Brennkraftmaschine eines Kraftfahrzeugs.The invention relates to a hydraulic valve, in particular for a Schwenkmotorversteller a camshaft of an internal combustion engine of a motor vehicle.
Aus der
Eine Aufgabe der Erfindung ist es, ein Hydraulikventil zu schaffen, das in einer einfachen und kompakten Bauweise ein gutes Steuerungsverhalten eines Schwenkmotorverstellers ermöglicht.An object of the invention is to provide a hydraulic valve which allows a good control behavior of a Schwenkmotorverstellers in a simple and compact design.
Eine weitere Aufgabe der Erfindung ist es, einen Schwenkmotorversteller einer Nockenwelle zu schaffen, der in einer einfachen und kompakten Bauweise ein gutes Steuerungsverhalten aufweist.Another object of the invention is to provide a Schwenkmotorversteller a camshaft, which has a good control behavior in a simple and compact design.
Die vorgenannten Aufgaben werden nach einem Aspekt der Erfindung gelöst mit den Merkmalen der unabhängigen Ansprüche.The above objects are achieved according to one aspect of the invention with the features of the independent claims.
Günstige Ausgestaltungen und Vorteile der Erfindung ergeben sich aus den weiteren Ansprüchen, der Beschreibung und der Zeichnung.Favorable embodiments and advantages of the invention will become apparent from the other claims, the description and the drawings.
Es wird ein Hydraulikventil vorgeschlagen, insbesondere für einen Schwenkmotorversteller einer Nockenwelle, das eine Buchse mit einem in einer Bohrung entlang einer Längsrichtung verschiebbar angeordneten Kolben, einen Versorgungsanschluss zum Zuführen eines Hydraulikfluids, wenigstens einen ersten Arbeitsanschluss und einen zweiten Arbeitsanschluss, sowie wenigstens einen Tankabfluss zum Ableiten des Hydraulikfluids umfasst. Der erste Arbeitsanschluss und der zweite Arbeitsanschluss sind durch ein Verschieben des Kolbens über wenigstens ein Rückschlagventil wechselweise miteinander und/oder mit dem Versorgungsanschluss und/oder mit dem wenigstens einen Tankabfluss verbindbar. Das wenigstens eine Rückschlagventil ist in einem Innenbereich des Kolbens angeordnet. Das Rückschlagventil umfasst ein bandartiges flexibles Element und gibt in einer geöffneten Position eine Verbindung zwischen einer Außenseite des Kolbens und dessen Innenbereich frei. Eine Innenseite des Kolbens weist einen äußeren Anschlag für das Rückschlagventil auf, so dass das Element durch einen an der Außenseite des Kolbens herrschenden Hydraulikdruck, insbesondere einen pulsartigen Hydraulikdruck, nach innen öffenbar ist.It is proposed a hydraulic valve, in particular for a Schwenkmotorversteller a camshaft having a bushing with a longitudinally displaceably disposed in a bore piston, a supply port for supplying a hydraulic fluid, at least a first working port and a second working port, and at least one tank drain for discharging of the hydraulic fluid. The first working connection and the second working connection can be connected by displacing the piston via at least one check valve alternately with one another and / or with the supply connection and / or with the at least one tank outflow. The at least one check valve is arranged in an inner region of the piston. The check valve comprises a band-like flexible member and, in an open position, releases communication between an outside of the piston and the inside thereof. An inside of the piston has an outer stop for the check valve, so that the element by a on the outside of the Piston prevailing hydraulic pressure, in particular a pulse-like hydraulic pressure, can be opened inwardly.
Pulsartige Hydraulikdrücke stellen zum einen Wechselmomente an dem hydraulischen Kolben dar, die sowohl zeitweilig einen positiven, veränderlichen Anteil als auch einen zeitweise negativen Anteil aufweisen. Demgegenüber sind schwellende Momente solche Momente, die sich zwar betragsmäßig verändern, jedoch über einen längeren Zeitraum von mehreren Millisekunden im gleichen Vorzeichenbereich der Momentenkennlinie verbleiben.Pulsed hydraulic pressures are on the one hand alternating moments on the hydraulic piston, which both temporarily have a positive, variable component and a temporary negative component. By contrast, swelling moments are those moments which, although they change in magnitude, remain over a longer period of several milliseconds in the same sign range of the torque characteristic.
Auf einen Kraftfahrzeughydraulikkreis eines Nockenwellenverstellers mit einem gegenläufigen Hydraulikkolben mit wenigstens zwei Hydraulikkammern wirkt ein äußeres Moment, das entweder wechselnd oder schwellend einwirkt. Der Hydraulikkreis führt durch, einer Hydraulikpumpe entnehmbare, unterschiedliche Druckbeaufschlagung der gegenläufigen Hydraulikkammern eine Positionsveränderung durch. Neben einer hydraulischen Weichenverstellung, vorzugsweise durch ein Ventil verkörpert, die die Druckbeaufschlagung auf das Hydraulikfluid auf den Kolben leitet, wird der negative Anteil des Wechselmoments genutzt, um den Hydraulikkolben in seiner Position zu verändern. Der schwellende Anteil des Moments wird hingegen durch weitere Mittel, wie zum Beispiel Rückschlagventile, ausgeblendet. Die selektive Nutzung von Momenten, insbesondere durch die Freigabe über Rückschlagventile, führt zu einer Linearisierung der Verstellgeschwindigkeit über der Drehzahl des Motors, während die fortdauernde Nutzung einer möglichst kleinen Hydraulikversorgung aus einer Pumpe zur Verstellung des Kolbens auch bei reinen Schwellanteilen des Moments die hohe Verstellgeschwindigkeit sicherstellt.On a motor hydraulic circuit of a camshaft adjuster with a counter-rotating hydraulic piston with at least two hydraulic chambers acts an external moment that acts either alternately or swelling. The hydraulic circuit performs, by a hydraulic pump removable, different pressurization of the counter-rotating hydraulic chambers a change in position. In addition to a hydraulic Weichenverstellung, preferably embodied by a valve which directs the pressurization of the hydraulic fluid to the piston, the negative portion of the alternating torque is used to change the hydraulic piston in position. The swelling portion of the moment, however, is hidden by other means, such as check valves. The selective use of moments, in particular by the release via check valves, leads to a linearization of the adjustment speed over the speed of the engine, while the continued use of the smallest possible hydraulic supply from a pump for adjusting the piston ensures the high adjustment even with pure Schwellanteilen the moment ,
Beispielsweise können jeweils hydraulische Verbindungswege von einer Kammer des einen Typs auf den Arbeitsanschluss für den anderen Kammertyp vorgesehen sein. Somit ergibt sich ein Hydraulikkreis mit einem Ventil. Das Ventil kann den Hydraulikdruck, da aus dem negativen Anteil des Wechselmoments auf dem einen Arbeitsanschluss für jeweils einen Kammertyp über wenigstens ein Rückschlagventil ausleitbar ist, auf den zweiten Arbeitsanschluss des jeweils anderen Kammertyps durchreichen. Es kann eine wechselweise Durchreichung erfolgen. Im Übrigen wird die Druckbeaufschlagung des druckbeaufschlagten Anschlusses zu dem zweiten Arbeitsanschluss weitergeleitet. Die wechselweise Durchreichung des hydraulischen Mediums ist sowohl von der einen Kammer als auch von der anderen Kammer auf die korrespondierende gegenläufige Kammer durchzuführen. Die Funktion der Rückschlagventile kann als Bypass bezeichnet werden, die nur den negativen Anteil der wechselnden Kraft vor dem Nockenwellenversteller wieder einspeisen. Ein geeigneter Ort der Wiedereinspeisung kann der Versorgungsanschluss des Nockenwellenverstellers darstellen. Das Rückschlagventil, bzw. wenn mehrere Rückschlagventile vorhanden sind, die Rückschlagventile, können dann so angeordnet sein, dass nur in Richtung auf die Druckseite des Nockenwellenverstellers eine Durchleitung des Hydraulikdrucks, der aus den Kammern des Kolbens stammt, ermöglicht wird.For example, each hydraulic connection paths can be provided from a chamber of one type to the working port for the other type of chamber. This results in a hydraulic circuit with a valve. The valve can pass the hydraulic pressure, since it is possible to divert the negative portion of the alternating torque on the one working connection for one chamber type via at least one check valve to the second working connection of the other type of chamber. It can be done alternately. Incidentally, the Pressurization of the pressurized port forwarded to the second working port. The alternate passage of the hydraulic medium is carried out from both the one chamber and the other chamber to the corresponding counter-rotating chamber. The function of the check valves can be referred to as a bypass, which feed only the negative part of the alternating force in front of the camshaft adjuster again. A suitable place of re-injection may be the supply connection of the camshaft adjuster. The check valve, or if there are a plurality of check valves, the check valves, can then be arranged so that only in the direction of the pressure side of the camshaft adjuster a passage of the hydraulic pressure originating from the chambers of the piston, is made possible.
Das wenigstens eine Rückschlagventil des Hydraulikventils ist in einem Innenbereich des Kolbens angeordnet, um einen möglichst kompakten Aufbau des Hydraulikventils zu ermöglichen. Insbesondere ist das Rückschlagventil als ein Band-Rückschlagventil ausgeführt, welches ein bandartiges flexibles Element, beispielsweise ein ringförmiges, sich überlappendes Band aus Federstahl, als schließendes Element des Rückschlagventils umfasst. Ein solches flexibles Band weist die notwendige Federspannung auf, um gegen hydraulischen Druck von außen einen Widerstand entgegenzusetzen, so dass das Band erst bei Überschreiten einer bestimmten Druckschwelle nachgibt, sich nach innen krümmen lässt und den Ventilquerschnitt öffnet. Die Druckschwelle kann dabei durch Auswahl des Materials sowie der Stärke des Materials eingestellt werden. Die Innenseite des Kolbens stellt einen äußeren Anschlag für das Band dar, an dem das Band, solange der hydraulische Druck unter der Druckschwelle ist, anliegt und das Rückschlagventil so geschlossen ist. Bei Überschreiten der Druckschwelle hebt sich das Band von dem Anschlag nach innen ab, und öffnet den Ventilquerschnitt nach innen, so dass Hydraulikfluid von einer Außenseite des Kolbens in den Innenbereich strömen kann.The at least one check valve of the hydraulic valve is arranged in an inner region of the piston in order to allow the most compact possible construction of the hydraulic valve. In particular, the check valve is designed as a band check valve, which comprises a band-like flexible element, for example an annular, overlapping band of spring steel, as a closing element of the check valve. Such a flexible band has the necessary spring tension to oppose against hydraulic pressure from the outside a resistance, so that the band yields only when a certain pressure threshold is exceeded, can bend inwards and opens the valve cross-section. The pressure threshold can be adjusted by selecting the material and the thickness of the material. The inside of the piston constitutes an outer stop for the band against which the band bears, as long as the hydraulic pressure is below the threshold pressure, and the check valve is thus closed. When the pressure threshold is exceeded, the band lifts off from the stop inwardly, and opens the valve cross-section inwardly, so that hydraulic fluid can flow from an outer side of the piston into the inner region.
Dadurch, dass das Rückschlagventil durch den Hydraulikdruck der zu entleerenden Kammer des Nockenwellenverstellers nach innen geöffnet wird, wird der Hydraulikdruck in der zu entleerenden Kammer gehalten. Die zu entleerende Kammer ist so durch das Rückschlagventil abgeschottet und gegen einströmendes Hydraulikfluid gesperrt. Das Rückschlagventil verhindert so eine Druckstoßbewegung des Kolbens des Hydraulikventils.Characterized in that the check valve is opened by the hydraulic pressure of the chamber to be emptied of the camshaft adjuster inwardly, the hydraulic pressure is maintained in the chamber to be emptied. The chamber to be emptied is so through the Check valve sealed off and blocked against inflowing hydraulic fluid. The check valve thus prevents a pressure surge movement of the piston of the hydraulic valve.
Durch diese Funktion eines Rückschlagventils im Innenbereich des Kolbens lässt sich eine bessere Regelgüte des Hydraulikventils mit einer besonders kompakten und kostengünstigen Bauweise des Hydraulikventils verknüpfen. Auch wird das Risiko, dass der Fluss des Hydraulikfluids durch das Rückschlagventil blockiert wird, gemindert. Ein solches Rückschlagventil mit einem bandartigen flexiblen Element öffnet besser als vergleichbare Rückschlagventile und schließt schneller. Das Hydraulikventil kann durch ein solches Rückschlagventil auftretende Momente durch pulsartigen Hydraulikdruck effektiv umsetzen und für die Funktion des angeschlossenen Nockenwellenverstellers nutzen.Through this function of a check valve in the interior of the piston, a better control quality of the hydraulic valve can be combined with a particularly compact and cost-effective design of the hydraulic valve. Also, the risk of the flow of hydraulic fluid being blocked by the check valve is reduced. Such a check valve with a band-like flexible element opens better than comparable check valves and closes faster. The hydraulic valve can effectively implement by such a check valve occurring moments by pulsed hydraulic pressure and use for the function of the connected camshaft adjuster.
Gemäß einer vorteilhaften Ausgestaltung kann dem ersten Arbeitsanschluss und dem zweiten Arbeitsanschluss jeweils ein Rückschlagventil im Innenbereich des Kolbens zugeordnet sein. Auf diese Weise können durch Druckpulse sowohl auf dem ersten Arbeitsanschluss als auch auf dem zweiten Arbeitsanschluss jeweils zugeordnete Rückschlagventile nach innen geöffnet werden und so die Druckpulse auf den zweiten oder den ersten Arbeitsanschluss weitergeleitet werden, um die Funktion der Wechselmomente so günstig für die Verstellung des Nockenwellenverstellers auszunutzen.According to an advantageous embodiment, the first working port and the second working port may each be assigned a check valve in the interior of the piston. In this way, each associated check valves can be opened inwardly by pressure pulses both on the first working port and on the second working port and so the pressure pulses are forwarded to the second or the first working port to the function of the alternating torques so low for the adjustment of the camshaft adjuster exploit.
Gemäß einer vorteilhaften Ausgestaltung kann eine erste Arbeitsposition des Hydraulikventils vorgesehen sein, in welcher ein erster Fluidpfad des Hydraulikfluids von dem ersten Arbeitsanschluss über das dem ersten Arbeitsanschluss zugeordnete Rückschlagventil zu dem zweiten Arbeitsanschluss offen ist, und eine zweite Arbeitsposition vorgesehen sein, in welcher ein zweiter Fluidpfad des Hydraulikfluids von dem zweiten Arbeitsanschluss über das dem zweiten Arbeitsanschluss zugeordnete Rückschlagventil zu dem ersten Arbeitsanschluss offen ist. Dadurch kann in der ersten Arbeitsposition des Hydraulikventils der Hydraulikdruck direkt von dem ersten Arbeitsanschluss auf den zweiten Arbeitsanschluss durchgeleitet werden, während in der zweiten Arbeitsposition der Hydraulikdruck direkt von dem zweiten Arbeitsanschluss auf den ersten Arbeitsanschluss durchgereicht werden kann, was für ein schnelles Regelverhalten des Hydraulikventils vorteilhaft ist.According to an advantageous embodiment, a first working position of the hydraulic valve may be provided, in which a first fluid path of the hydraulic fluid from the first working port via the first working port associated check valve to the second working port is open, and a second working position may be provided, in which a second fluid path the hydraulic fluid from the second working port is open to the first working port via the check valve associated with the second working port. As a result, in the first operating position of the hydraulic valve, the hydraulic pressure can be passed directly from the first working port to the second working port, while in the second operating position the hydraulic pressure is directly from the second Work connection can be passed to the first work connection, which is advantageous for a fast control behavior of the hydraulic valve.
Gemäß einer vorteilhaften Ausgestaltung kann eine dritte, sogenannte Mittenposition des Hydraulikventils vorgesehen sein, in welcher der erste Arbeitsanschluss und der zweite Arbeitsanschluss unabhängig von den Rückschlagventilen geschlossen sind und nicht mit den Rückschlagventilen verbunden sind. In dieser Mittenposition sind damit die Rückschlagventile und die Kammern eines angeschlossenen Nockenwellenverstellers verschlossen und gegeneinander abgeschottet. Diese dritte Position entspricht damit einer Kontrollstellung oder Mittelstellung des Hydraulikventils.According to an advantageous embodiment, a third, so-called center position of the hydraulic valve may be provided, in which the first working port and the second working port are closed independently of the check valves and are not connected to the check valves. In this center position so that the check valves and the chambers of a connected camshaft adjuster are closed and sealed off from each other. This third position thus corresponds to a control position or middle position of the hydraulic valve.
Gemäß einer vorteilhaften Ausgestaltung kann ein weiterer Fluidpfad des Hydraulikfluids von der Außenseite des Kolbens zu dem wenigstens einen Rückschlagventil über Bohrungen im Kolben vorgesehen sein. Das Hydraulikfluid kann über die Bohrungen in der Wandung des Kolbens auf das bandartige flexible Element des Rückschlagventils drücken und so das Rückschlagventil nach innen öffnen. Auf diese Weise kann das Band an dem Anschlag auf der Innenseite des Kolbens anliegen und wird nur durch Hydraulikdruck von außen nach innen gedrückt und dadurch geöffnet.According to an advantageous embodiment, a further fluid path of the hydraulic fluid can be provided from the outside of the piston to the at least one check valve via bores in the piston. The hydraulic fluid can press on the holes in the wall of the piston on the ribbon-like flexible element of the check valve and thus open the check valve inwards. In this way, the band can abut against the stop on the inside of the piston and is pressed only by hydraulic pressure from outside to inside and thereby opened.
Gemäß einer vorteilhaften Ausgestaltung kann eine wenigstens teilweise auf der Außenseite des Kolbens radial umlaufende Steuernut zur Versorgung der Bohrungen mit Hydraulikfluid vorgesehen sein. Damit kann gewährleistet werden, dass der angreifende Hydraulikdruck radial umlaufend in gleicher Weise auf die Außenseite des Kolbens wirkt und durch den Hydraulikdruck keine Rotation des Kolbens eingeleitet wird. Über die Steuernut kann der Hydraulikdruck dann durch die Bohrungen in der Wandung des Kolbens auf das Band des Rückschlagventils durchgeleitet werden und dieses betätigen.According to an advantageous embodiment may be provided at least partially on the outside of the piston radially circumferential cam for supplying the holes with hydraulic fluid. This can be ensured that the attacking hydraulic pressure acts radially circumferentially in the same way on the outside of the piston and the hydraulic pressure no rotation of the piston is initiated. About the control groove, the hydraulic pressure can then be passed through the holes in the wall of the piston on the tape of the check valve and actuate this.
Gemäß einer vorteilhaften Ausgestaltung kann die Außenseite des Kolbens im Bereich der Bohrungen jeweils bereichsweise als ebene Fläche ausgestaltet sein. In einer alternativen Ausführungsform kann die Außenseite des Kolbens abschnittsweise als ebene Flächen gestaltet sein, welche Abflachungen der zylinderförmigen Außenwand des Kolbens darstellen, die umlaufend aneinandergrenzen. Die Flächenwerte sind günstigerweise ausgeglichen, so dass durch angreifenden Hydraulikdruck der Kolben nicht gedreht oder axial bewegt wird. Vorteilhaft wird dazu in jeder Fläche eine Bohrung zur Versorgung des Rückschlagventils mit den Hydraulikdruck vorgesehen.According to an advantageous embodiment, the outer side of the piston in the region of the bores may be configured in each case partially as a flat surface. In an alternative embodiment, the outer side of the piston may be designed in sections as flat surfaces, which flattenings of the cylindrical outer wall represent of the piston, which adjoin each other circumferentially. The area values are conveniently balanced so that the piston is not rotated or moved axially by hydraulic pressure applied. Advantageously, a bore for supplying the check valve with the hydraulic pressure is provided in each area.
Gemäß einer vorteilhaften Ausgestaltung kann das bandartige flexible Element mit einem das Element axial umfassendes Fixierungselement gegen Verschieben in Längsrichtung gesichert sein. Das bandartige flexible Element wird so axial in einer Position gehalten und kann sich durch den angreifenden Hydraulikdruck lediglich in radialer Richtung bewegen, um das Rückschlagventil nach innen zu öffnen oder durch Wiederanlegen an der Innenseite des Kolbens zu schließen. So ist das Rückschlagventil als Ganzes im Innenbereich des Kolbens fixiert.According to an advantageous embodiment, the band-like flexible element may be secured against displacement in the longitudinal direction by means of a fixation element comprising the element axially. The band-like flexible member is thus held axially in one position and can move only radially through the hydraulic pressure applied to open the check valve inwardly or close by re-applying to the inside of the piston. Thus, the check valve is fixed as a whole in the interior of the piston.
Gemäß einer vorteilhaften Ausgestaltung kann das Rückschlagventil mit wenigstens einer Hülse als integrierte Einheit ausgebildet sein, welche das bandartige flexible Element und das Fixierungselement umfasst, wobei das bandartige flexible Element vorgespannt an einer Innenseite der Hülse anliegt. Auf diese Weise lässt sich das Rückschlagventil als Montageeinheit vormontieren und besonders leicht im Innenbereich des Kolbens in der axial gewünschten Position anordnen. Dadurch kann auch der Anschlag des bandartigen flexiblen Elements, je nach Ausbildung des Bandes, mindestens durch die Innenseite der Hülse vorgegeben sein. Die Montage des Rückschlagventils im Kolben ist durch diese Lösung sehr begünstigt. Vorteilhaft können auch zwei Hülsen vorgesehen sein, welche das Band von beiden Seiten in Längsrichtung umfassen.According to an advantageous embodiment, the check valve may be formed with at least one sleeve as an integrated unit which comprises the band-like flexible element and the fixing element, wherein the band-like flexible element biased against an inner side of the sleeve. In this way, the check valve can be pre-assembled as a mounting unit and particularly easy to arrange in the interior of the piston in the axially desired position. As a result, the stop of the band-like flexible element, depending on the design of the band, at least be predetermined by the inside of the sleeve. The assembly of the check valve in the piston is very favored by this solution. Advantageously, two sleeves may be provided which comprise the band from both sides in the longitudinal direction.
Gemäß einer vorteilhaften Ausgestaltung kann das bandartige flexible Element in einer Bohrung des Kolbens angeordnet mit wenigstens einem ringförmigen Fixierungselement gegen Verschieben in Längsrichtung gesichert sein. In alternativer Weise ist auch möglich, dass das Band direkt im Innenbereich des Kolbens angeordnet ist und lediglich durch ein Fixierungselement in axialer Richtung fixiert ist, so dass das Band auch in der Funktion als Rückschlagventil, wenn es nach innen gedrückt wird, sich axial nicht bewegen kann. Dazu ist das ringförmige Fixierungselement mit einer bestimmten Dicke oder mit radial verlaufenden Fixierungselementen ausgestattet und/oder weist noch einen inneren Anschlag auf, der verhindert, dass das Band über das ringförmige Fixierungselement hinaus sich doch axial verschieben lässt.According to an advantageous embodiment, the band-like flexible element can be secured in a bore of the piston arranged with at least one annular fixing element against displacement in the longitudinal direction. Alternatively, it is also possible that the band is arranged directly in the interior of the piston and is fixed only by a fixing element in the axial direction, so that the band also in the function as a check valve when it is pressed inward, do not move axially can. For this purpose, the annular fixing element is equipped with a certain thickness or with radially extending fixing elements and / or still has an inner stop, which prevents the band beyond the annular fixing element can still move axially.
Gemäß einer vorteilhaften Ausgestaltung kann das Fixierungselement zylinderförmig oder hohlzylinderförmig ausgebildet sein und axial beabstandet zwei Bereiche mit radial abstehenden Vorsprüngen aufweisen, wobei das bandartige flexible Element um das Fixierungselement herum und zwischen den beiden Bereichen angeordnet ist und durch die Vorsprünge axial auf dem Fixierungselement fixiert ist. Diese radial abstehenden Vorsprünge können in Form von Stegen oder Zacken ausgestaltet sein, welche das Band axial fixieren und in Längsrichtung vor und nach dem Band radial nach außen oder innen stehen. Bereits jeweils ein Vorsprung vor und nach dem Band kann diese Funktion erfüllen. Aus Symmetriegründen ist es vorteilhaft drei oder mehr Vorsprünge auf dem Fixierungselement vorzusehen.According to an advantageous embodiment, the fixing element may be cylindrical or hollow cylindrical and axially spaced having two regions with radially projecting projections, wherein the ribbon-like flexible member is disposed around the fixing member and between the two regions and is axially fixed by the projections on the fixing element. These radially projecting projections may be configured in the form of webs or serrations which axially fix the band and are radially outward or inward in the longitudinal direction before and after the band. Already a lead before and after the band can fulfill this function. For reasons of symmetry, it is advantageous to provide three or more projections on the fixing element.
Gemäß einer vorteilhaften Ausgestaltung kann das Fixierungselement einen Anschlag für das bandartige flexible Element nach innen bilden. Der Anschlag nach innen kann eine Begrenzung des wirkenden Hydraulikdruckes bewirken, der von einem Arbeitsanschluss auf den jeweils anderen Arbeitsanschluss weitergeleitet wird. Auch ist so eine stabile Montage des bandartigen flexiblen Elements in der integrierten Einheit des Rückschlagventils begünstigt und die Position des Bandes wird auch bei höheren Druckstößen beibehalten.According to an advantageous embodiment, the fixing element can form a stop for the band-like flexible element inwards. The stop inwards can cause a limitation of the effective hydraulic pressure, which is forwarded from one working port to the other work port. Also, such a stable mounting of the band-like flexible element in the integrated unit of the check valve is favored and the position of the band is maintained even at higher pressure surges.
Gemäß einer vorteilhaften Ausgestaltung können die radial abstehenden Vorsprünge zur Abstützung der wenigstens einen Hülse vorgesehen sein. Die Hülse kann durch die radial abstehenden Vorsprünge in axialer Richtung gehalten sowie in radialer Richtung abgestützt werden, was die Bildung einer Montageeinheit für das Rückschlagventil begünstigt. Damit ist auch das Fixierungselement in der Hülse selbst fest verankerbar.According to an advantageous embodiment, the radially projecting projections may be provided for supporting the at least one sleeve. The sleeve can be held by the radially projecting projections in the axial direction and supported in the radial direction, which favors the formation of a mounting unit for the check valve. Thus, the fixing element in the sleeve itself is firmly anchored.
Gemäß einer vorteilhaften Ausgestaltung kann an dem Versorgungsanschluss innerhalb des Kolbens ein weiteres Rückschlagventil mit einem bandartigen flexiblen Element vorgesehen sein, wobei das weitere Rückschlagventil durch einen an dem Versorgungsanschluss herrschenden Hydraulikdruck nach innen öffenbar ist. Ein solches Rückschlagventil an dem Versorgungsanschluss kann dafür sorgen, dass der Versorgungsdruck des Hydraulikfluids konstant gehalten wird und eventuelle Druckstöße von den Arbeitsanschlüssen nicht auf den Versorgungsanschluss durchschlagen, sondern höchstens einen Abfluss des Hydraulikfluids in den Tankabfluss bewirken können.According to an advantageous embodiment, a further check valve may be provided with a band-like flexible element at the supply connection within the piston, wherein the further check valve can be opened inwardly by a hydraulic pressure prevailing at the supply connection. Such a check valve on the supply connection can ensure that the Supply pressure of the hydraulic fluid is kept constant and any pressure surges from the working ports not penetrate the supply port, but at most can cause a drain of the hydraulic fluid in the tank drain.
Die Erfindung betrifft nach einem weiteren Aspekt einen Schwenkmotorversteller einer Nockenwelle, welcher ein Hydraulikventil umfasst, wobei ein erster Arbeitsanschluss mit einer ersten Druckkammer des Schwenkmotorverstellers verbunden ist und ein zweiter Arbeitsanschluss mit einer zweiten Druckkammer des Schwenkmotorverstellers verbunden ist. Der erste Arbeitsanschluss und der zweite Arbeitsanschluss sind durch ein Verschieben des Kolbens über wenigstens ein Rückschlagventil wechselweise miteinander und/oder mit dem Versorgungsanschluss und/oder mit dem wenigstens einen Tankabfluss verbindbar. Das wenigstens eine Rückschlagventil ist in einem Innenbereich des Kolbens angeordnet. Das Rückschlagventil umfasst ein bandartiges flexibles Element und gibt in einer geöffneten Position eine Verbindung zwischen einer Außenseite des Kolbens und dessen Innenbereich frei, wobei eine Innenseite des Kolbens einen äußeren Anschlag für das Rückschlagventil aufweist, so dass das Element durch einen an einer Außenseite des Kolbens herrschenden Hydraulikdruck, insbesondere einen pulsartigen Hydraulikdruck, nach innen öffenbar ist.The invention relates in another aspect to a Schwenkmotorversteller a camshaft comprising a hydraulic valve, wherein a first working port is connected to a first pressure chamber of the Schwenkmotorverstellers and a second working port is connected to a second pressure chamber of the Schwenkmotorverstellers. The first working connection and the second working connection can be connected by displacing the piston via at least one check valve alternately with one another and / or with the supply connection and / or with the at least one tank outflow. The at least one check valve is arranged in an inner region of the piston. The check valve comprises a band-like flexible member and, in an open position, releases communication between an outer side of the piston and the inner portion thereof, an inner side of the piston having an outer stopper for the check valve, so that the member is dominated by an outer side of the piston Hydraulic pressure, in particular a pulse-like hydraulic pressure, can be opened inwardly.
Das Hydraulikventil soll insbesondere bei dem schwenkmotorartigen Nockenwellenversteller die Momentenschwankungen, die sowohl als Wechselmomente als auch als schwellende Momente auftreten können, mit dem Hydraulikdruck aus dem Versorgungsanschluss durchreichen. Arbeitsanschlüsse, die auf die Kammern des Hydraulikkolbens führen, werden je nach Schaltstellung des Hydraulikkolbens innerhalb des Ventils wechselweise durchgeschaltet bzw. unterbrochen. Ohne Momentenschwankungen leitet das Ventil den Hydraulikdruck zeitweilig in eine der Kammern des Schwenkmotorverstellers. In dem Hydraulikkreis entsteht ein weiterer Hydraulikdruck, der aus dem negativen Anteil des Wechselmoments stammt. Der Hydraulikdruck, der aus dem negativen Anteil des Wechselmoments herrührt, ist immer wenigstens über ein Rückschlagventil ausleitbar. Der ausgeleitete Druck wird auf den zweiten Arbeitsanschluss durchgereicht. Der beschriebene Zustand ist ein Sonderzustand, weil die meiste Zeit die Druckbeaufschlagung, die vom Versorgungsanschluss stammt, zu dem entsprechenden Arbeitsanschluss weitergeleitet wird. Es findet eine weitergehende Nutzung von Drücken innerhalb des Hydraulikkreises über den Dauerdruck hinaus statt. Die sich aus dem Rückschlagventil ergebende Bypassleitung nützt das negative Moment, während die Standardverstellung durch die gewählte Standardposition des Hydraulikkolbens sichergestellt wird. Neben einer vorteilhaften energetischen Nutzung von zusätzlichen Druckressourcen wird durch diese Rückkoppelung die Regelgüte und sogar die Verstellgeschwindigkeit vergleichmäßigt oder verbessert.The hydraulic valve is intended to pass through the torque fluctuations, which can occur both as alternating torques and as swelling moments, with the hydraulic pressure from the supply connection, in particular in the case of the pivoting motor-like camshaft adjuster. Working connections that lead to the chambers of the hydraulic piston, depending on the switching position of the hydraulic piston within the valve alternately switched through or interrupted. Without torque fluctuations, the valve temporarily directs the hydraulic pressure in one of the chambers of the Schwenkmotorverstellers. In the hydraulic circuit creates another hydraulic pressure, which comes from the negative portion of the alternating torque. The hydraulic pressure resulting from the negative portion of the alternating torque is always at least via a check valve ausleitbar. The discharged pressure is passed on to the second working connection. The described condition is a special condition because most of the time the pressurization of the Supply connection is derived, is forwarded to the appropriate work connection. There is a wider use of pressures within the hydraulic circuit beyond the steady-state pressure. The bypass line resulting from the check valve takes advantage of the negative moment, while the standard adjustment is ensured by the selected standard position of the hydraulic piston. In addition to an advantageous energetic use of additional pressure resources, the feedback quality and even the adjustment speed are evened out or improved by this feedback.
Insbesondere für das Durchreichen des negativen Anteils des Wechselmoments werden zwei Rückschlagventile verwendet. Die Rückschlagventile sind so angeordnet, dass sie einen Hydraulikmittelfluss von dem Versorgungsanschluss auf den Arbeitsanschluss verhindern, wenn der sich aus dem Betrag des negativen Anteils des Wechselmoments ergebende Druck absolut den Druck des Versorgungsanschlusses übersteigt. Die Ventile funktionieren sozusagen als Richtungsdrosseln.In particular, for passing the negative portion of the alternating torque two check valves are used. The check valves are arranged to prevent hydraulic fluid flow from the supply port to the working port when the pressure resulting from the amount of the negative portion of the alternating torque exceeds the absolute pressure of the supply port. The valves work as directional throttles, so to speak.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen sind Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnungen, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawings, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
- Fig. 1Fig. 1
- ein Hydraulikventil zur Verstellung eines Schwenkmotorverstellers nach einem Ausführungsbeispiel der Erfindung in einer ersten Arbeitsposition, dargestellt in einem Längsschnitt;a hydraulic valve for adjusting a Schwenkmotorverstellers according to an embodiment of the invention in a first working position, shown in a longitudinal section;
- Fig. 2Fig. 2
-
das Hydraulikventil gemäß
Figur 1 in einer Mittenposition;the hydraulic valve according toFIG. 1 in a middle position; - Fig. 3Fig. 3
-
das Hydraulikventil gemäß
Figur 1 in einer zweiten Arbeitsposition;the hydraulic valve according toFIG. 1 in a second working position; - Fig. 4Fig. 4
- ein Rückschlagventil nach einem Ausführungsbeispiel der Erfindung in geschlossener Funktion, dargestellt in einem Längsschnitt;a check valve according to an embodiment of the invention in a closed function, shown in a longitudinal section;
- Fig. 5Fig. 5
-
das Rückschlagventil gemäß
Figur 4 in einer Explosionsdarstellung;the check valve according toFIG. 4 in an exploded view; - Fig. 6Fig. 6
-
das Rückschlagventil gemäß
Figur 4 in offener Funktion, dargestellt in einem Längsschnitt;the check valve according toFIG. 4 in open function, shown in a longitudinal section; - Fig. 7Fig. 7
- ein Hydraulikventil nach einem weiteren Ausführungsbeispiel der Erfindung, dargestellt in einem Längsschnitt;a hydraulic valve according to another embodiment of the invention, shown in a longitudinal section;
- Fig. 8Fig. 8
- ein Hydraulikventil nach einem weiteren Ausführungsbeispiel der Erfindung, dargestellt in einem Längsschnitt;a hydraulic valve according to another embodiment of the invention, shown in a longitudinal section;
- Fig. 9Fig. 9
- einen Kolben eines Hydraulikventils nach einem Ausführungsbeispiel der Erfindung in einer isometrischen Darstellung;a piston of a hydraulic valve according to an embodiment of the invention in an isometric view;
- Fig. 10Fig. 10
- einen Kolben eines Hydraulikventils nach einem weiteren Ausführungsbeispiel der Erfindung in einer isometrischen Darstellung; unda piston of a hydraulic valve according to another embodiment of the invention in an isometric view; and
- Fig. 11Fig. 11
- einen Schwenkmotorversteller nach einem Ausführungsbeispiel der Erfindung in einem Querschnitt.a Schwenkmotorversteller according to an embodiment of the invention in a cross section.
In den Figuren sind gleiche oder gleichartige Komponenten mit gleichen Bezugszeichen beziffert. Die Figuren zeigen lediglich Beispiele und sind nicht beschränkend zu verstehen.In the figures, the same or similar components are numbered with the same reference numerals. The figures are merely examples and are not intended to be limiting.
Die Buchse 15 weist einen Versorgungsanschluss 30 zum Zuführen eines Hydraulikfluids, einen ersten Arbeitsanschluss 34 und einen zweiten Arbeitsanschluss 36, sowie zwei Tankabflüsse 38, 40 zum Ableiten des Hydraulikfluids auf. Der erste Arbeitsanschluss 34 und der zweite Arbeitsanschluss 36 sind durch ein Verschieben des Kolbens 44 über wenigstens ein Rückschlagventil 46, 48 wechselweise miteinander und/oder mit dem Versorgungsanschluss 30 und/oder mit dem wenigstens einen Tankabfluss 38, 40 verbindbar. Die beiden Rückschlagventile 46, 48 sind im Innenbereich 64 des Kolbens 44 angeordnet. Die Rückschlagventile 46, 48 umfassen ein bandartiges flexibles Element 80, welches in einer geöffneten Position eine Verbindung zwischen der Außenseite 66 des Kolbens 44 und dessen Innenbereich 64 freigibt. Die Innenseite 65 des Kolbens 44 weist einen äußeren Anschlag für die Rückschlagventile 46, 48 auf, so dass das Element 80 durch einen an der Außenseite 66 des Kolbens 44 herrschenden Hydraulikdruck, insbesondere einen pulsartigen Hydraulikdruck, nach innen öffenbar ist. Dem ersten Arbeitsanschluss 34 und dem zweiten Arbeitsanschluss 36 ist jeweils ein Rückschlagventil 46, 48 im Innenbereich 64 des Kolbens 44 zugeordnet. An dem Versorgungsanschluss 30 ist innerhalb des Kolbens 44 ein weiteres Rückschlagventil 32 mit einem bandartigen flexiblen Element 94 vorgesehen. Auch dieses Rückschlagventil 32 ist durch einen an dem Versorgungsanschluss 30 herrschenden Hydraulikdruck nach innen öffenbar. Das bandartige flexible Element 94 liegt bei diesem Rückschlagventil 32 im drucklosen Zustand, in dem das Rückschlagventil 32 geschlossen ist, an der Innenwandung 20 der Buchse 15 an.The
Das Rückschlagventil 46, 48 weist ein Fixierungselement 82 auf, welches als Hohlzylinder mit seitlich abstehenden Vorsprüngen 92 ausgeführt ist. Das bandartige flexible Element 80 ist zwischen den Vorsprüngen 92 axial fixiert und kann sich nur radial bewegen. Zwei Hülsen 84 umfassen das Fixierungselement 82 von beiden Enden und werden durch die Vorsprünge 92 abgestützt, wobei das bandartige flexible Element 80 vorgespannt teilweise an der Innenseite 88 der Hülse 84 anliegt und so in drucklosem Zustand das Rückschlagventil 46, 48 schließt. Das Rückschlagventil 46, 48 ist so als vormontierte integrierte Einheit 86 ausgebildet, die als Ganzes günstig im Innenbereich 64 des Kolbens 44 montiert werden kann.The
In
In
Zwei Hülsen 84 umfassen das Fixierungselement 82 von beiden Enden und werden durch die Vorsprünge 92 abgestützt, wobei das bandartige flexible Element 80 vorgespannt teilweise an der Innenseite 88 der Hülse 84 anliegt und so in drucklosem Zustand das Rückschlagventil 46, 48 schließt. Das Rückschlagventil 46, 48 ist so als vormontierte integrierte Einheit 86 ausgebildet, die als Ganzes günstig im Innenbereich 64 des Kolbens 44 montiert werden kann. Das bandartige flexible Element 80 liegt vorgespannt an der Innenseite 88 der Hülsen 84 an und kann durch Hydraulikdruck von außen geöffnet werden. Das Fixierungselement 82 bildet dabei einen Anschlag für das bandartige flexible Element 80 nach innen.Two
In
In
Mit einem Schwenkmotorversteller 14 gemäß
Der Stator 1 umfasst einen zylindrischen Statorgrundkörper 3, an dessen Innenseite radial nach innen in gleichen Abständen Stege 4 abstehen. Zwischen benachbarten Stegen 4 werden Zwischenräume 5 gebildet, in die, beispielsweise über ein in den
Die Stege 4 liegen mit ihren Stirnseiten dichtend an der Außenmantelfläche der Rotornabe 7 an. Die Flügel 6 ihrerseits liegen mit ihren Stirnseiten dichtend an der zylindrischen Innenwand des Statorgrundkörpers 3 an.The
Der Rotor 8 ist drehfest mit der Nockenwelle 18 verbunden. Um die Winkellage zwischen der Nockenwelle 18 und dem Antriebsrad 2 zu verändern, wird der Rotor 8 relativ zum Stator 1 gedreht. Hierzu wird je nach gewünschter Drehrichtung das Hydraulikfluid in den Druckkammern 9 oder 10 unter Druck gesetzt, während die jeweils anderen Druckkammern 10 oder 9 zum Tank des Hydraulikfluids hin entlastet werden. Um den Rotor 8 gegenüber dem Stator 1 entgegen dem Uhrzeigersinn in die dargestellte Stellung zu verschwenken, wird vom Hydraulikventil 12 ein ringförmiger erster Rotorkanal in der Rotornabe 7 unter Druck gesetzt. Von diesem ersten Rotorkanal führen dann weitere Kanäle 11 in die Druckkammern 10. Dieser erste Rotorkanal ist dem ersten Arbeitsanschluss 34 zugeordnet. Um den Rotor 8 hingegen im Uhrzeigersinn zu verschwenken, wird vom Hydraulikventil 12 ein zweiter ringförmiger Rotorkanal in der Rotornabe 7 unter Druck gesetzt. Dieser zweite Rotorkanal ist dem zweiten Arbeitsanschluss 36 zugeordnet. Diese beiden Rotorkanäle sind bezüglich einer Zentralachse 22 axial beabstandet zueinander angeordnet.The
Der Schwenkmotorverstellers 14 ist auf die als Hohlrohr 16 ausgeführte gebaute Nockenwelle 18 aufgesetzt. Dazu ist der Rotor 8 auf die Nockenwelle 18 gesteckt. Der Schwenkmotorversteller 14 ist mittels des in
Claims (15)
wobei der erste Arbeitsanschluss (34) und der zweite Arbeitsanschluss (36) durch ein Verschieben des Kolbens (44) über wenigstens ein Rückschlagventil (46, 48) wechselweise miteinander und/oder mit dem Versorgungsanschluss (30) und/oder mit dem wenigstens einen Tankabfluss (38, 40) verbindbar sind,
wobei das wenigstens eine Rückschlagventil (46, 48) in einem Innenbereich (64) des Kolbens (44) angeordnet ist, welches Rückschlagventil (46, 48) ein bandartiges flexibles Element (80) umfasst und in einer geöffneten Position eine Verbindung zwischen einer Außenseite (66) des Kolbens (44) und dessen Innenbereich (64) freigibt, wobei eine Innenseite (65) des Kolbens (44) einen äußeren Anschlag für das Rückschlagventil (46, 48) aufweist, so dass das Element (80) durch einen an einer Außenseite (66) des Kolbens (44) herrschenden Hydraulikdruck, insbesondere einen pulsartigen Hydraulikdruck, nach innen öffenbar ist.A swivel motor adjuster (14) of a camshaft (18), comprising a hydraulic valve (12) according to any one of the preceding claims, wherein a first working port (34) is connected to a first pressure chamber (9) of the Schwenkmotorverstellers (14) and a second working port (36) is connected to a second pressure chamber (10) of the Schwenkmotorverstellers (14),
wherein the first work connection (34) and the second work connection (36) by a displacement of the piston (44) via at least one check valve (46, 48) alternately with each other and / or with the supply port (30) and / or with the at least one tank outlet (38, 40) are connectable,
wherein the at least one check valve (46, 48) is arranged in an inner region (64) of the piston (44), which check valve (46, 48) comprises a band-like flexible element (80) and in an open position a connection between an outer side (64). 66) of the piston (44) and its inner region (64) releases, wherein an inner side (65) of the piston (44) has an outer stop for the check valve (46, 48), so that the element (80) by a at one Outer side (66) of the piston (44) prevailing hydraulic pressure, in particular a pulse-like hydraulic pressure, can be opened inwardly.
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DE102016104560.8A DE102016104560A1 (en) | 2016-03-14 | 2016-03-14 | Hydraulic valve for a Schwenkmotorversteller a camshaft |
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EP3219941B1 EP3219941B1 (en) | 2019-04-10 |
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EP17158314.9A Active EP3219941B1 (en) | 2016-03-14 | 2017-02-28 | Hydraulic slider valve for a vane cell camshaft adjuster for a camshaft |
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US (1) | US10605127B2 (en) |
EP (1) | EP3219941B1 (en) |
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Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112682122B (en) | 2016-10-06 | 2022-09-09 | 博格华纳公司 | Dual flap valve for variable cam timing system |
US11111827B2 (en) | 2016-10-06 | 2021-09-07 | Borgwarner, Inc. | Double flapper valve for a variable cam timing system |
US10760454B2 (en) * | 2017-09-19 | 2020-09-01 | ECO Holding 1 GmbH | Oil control valve to control a cam phaser with a spool positioned by an external actuator and having a groove |
DE102017217924A1 (en) * | 2017-10-09 | 2019-04-11 | Robert Bosch Gmbh | Hydraulic slide valve |
RU2687663C1 (en) * | 2018-01-23 | 2019-05-15 | Федеральное государственное бюджетное учреждение науки Институт проблем нефти и газа РАН (ИПНГ РАН) | Method of gas well operation |
JP7043973B2 (en) * | 2018-01-31 | 2022-03-30 | 株式会社アイシン | Valve opening / closing timing control device |
US10662827B2 (en) * | 2018-02-21 | 2020-05-26 | ECO Holding 1 GmbH | Center bolt oil control valve to control a cam phaser with a calibration cap having a pressure check valve and filter |
US20200269379A1 (en) * | 2019-02-22 | 2020-08-27 | Borgwarner Inc. | Centerless grinding through the application of a helical twist to axial grooves |
CN109854322B (en) * | 2019-04-01 | 2024-06-21 | 绵阳富临精工机械股份有限公司 | Central slide valve structure |
CN109958489B (en) * | 2019-04-25 | 2024-07-05 | 绵阳富临精工机械股份有限公司 | Reciprocating type central valve structure of adjusting |
CN110318836B (en) * | 2019-08-12 | 2024-08-20 | 富临精工股份有限公司 | Radial loop energy-saving engine oil control valve |
CN110360337A (en) * | 2019-08-12 | 2019-10-22 | 绵阳富临精工机械股份有限公司 | A kind of self_adaptive adjusting valve |
CN110359976B (en) * | 2019-08-12 | 2024-09-24 | 绵阳富临精工机械股份有限公司 | Energy-saving engine oil control valve with circulation regulation function |
US11174762B1 (en) | 2020-08-14 | 2021-11-16 | Borgwarner, Inc. | VCT valve with reed check |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060225791A1 (en) * | 2005-03-18 | 2006-10-12 | Hydraulik-Ring Gmbh | Valve with check valve |
DE602005000504T2 (en) | 2004-09-28 | 2007-11-15 | Borgwarner Inc., Auburn Hills | Gate valve device for a camshaft adjuster with integrated non-return valves |
US20090107433A1 (en) * | 2007-10-25 | 2009-04-30 | Denso Corporation | Valve timing controller |
US20130019830A1 (en) * | 2010-04-26 | 2013-01-24 | Schaeffler Technologies AG & Co. KG | Control valve having a curved spring band serving as a non-return valve |
EP2977569A1 (en) * | 2014-07-25 | 2016-01-27 | Delphi Technologies, Inc. | Camshaft phaser |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900822A (en) | 1974-03-12 | 1975-08-19 | Ledex Inc | Proportional solenoid |
US7209020B2 (en) | 2003-06-09 | 2007-04-24 | Borgwarner Inc. | Variable force solenoid |
DE102005048732B4 (en) | 2005-10-12 | 2024-07-25 | Schaeffler Technologies AG & Co. KG | Electromagnetic actuator of a hydraulic directional control valve |
DE102009022869A1 (en) | 2009-05-27 | 2010-12-09 | Hydraulik-Ring Gmbh | Vane phaser system |
DE102009024026B4 (en) * | 2009-06-05 | 2022-12-08 | Schaeffler Technologies AG & Co. KG | Control valve for controlling the flow of pressure medium with an integrated non-return valve |
DE102010022896B4 (en) * | 2010-06-07 | 2021-11-11 | Schaeffler Technologies AG & Co. KG | Camshaft adjusting device for an internal combustion engine that can be actuated by pressure medium |
DE102010061337B4 (en) * | 2010-12-20 | 2015-07-09 | Hilite Germany Gmbh | Hydraulic valve for a Schwenkmotorversteller |
DE102014101236B4 (en) * | 2014-01-31 | 2017-06-08 | Hilite Germany Gmbh | Hydraulic valve for a Schwenkmotorversteller a camshaft |
-
2016
- 2016-03-14 DE DE102016104560.8A patent/DE102016104560A1/en not_active Withdrawn
- 2016-12-02 US US15/367,444 patent/US10605127B2/en not_active Expired - Fee Related
-
2017
- 2017-01-11 CN CN201710019769.1A patent/CN107191237B/en not_active Expired - Fee Related
- 2017-02-28 EP EP17158314.9A patent/EP3219941B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE602005000504T2 (en) | 2004-09-28 | 2007-11-15 | Borgwarner Inc., Auburn Hills | Gate valve device for a camshaft adjuster with integrated non-return valves |
US20060225791A1 (en) * | 2005-03-18 | 2006-10-12 | Hydraulik-Ring Gmbh | Valve with check valve |
US20090107433A1 (en) * | 2007-10-25 | 2009-04-30 | Denso Corporation | Valve timing controller |
US20130019830A1 (en) * | 2010-04-26 | 2013-01-24 | Schaeffler Technologies AG & Co. KG | Control valve having a curved spring band serving as a non-return valve |
EP2977569A1 (en) * | 2014-07-25 | 2016-01-27 | Delphi Technologies, Inc. | Camshaft phaser |
Also Published As
Publication number | Publication date |
---|---|
US10605127B2 (en) | 2020-03-31 |
DE102016104560A1 (en) | 2017-09-14 |
EP3219941B1 (en) | 2019-04-10 |
US20170260883A1 (en) | 2017-09-14 |
CN107191237B (en) | 2019-06-28 |
CN107191237A (en) | 2017-09-22 |
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