EP1851469A1 - Valve for control of a clutch in a gearbox of a vehicle - Google Patents
Valve for control of a clutch in a gearbox of a vehicleInfo
- Publication number
- EP1851469A1 EP1851469A1 EP06705798A EP06705798A EP1851469A1 EP 1851469 A1 EP1851469 A1 EP 1851469A1 EP 06705798 A EP06705798 A EP 06705798A EP 06705798 A EP06705798 A EP 06705798A EP 1851469 A1 EP1851469 A1 EP 1851469A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- spool
- control
- coating
- clutch
- 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.)
- Withdrawn
Links
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 5
- 230000000737 periodic effect Effects 0.000 claims abstract description 3
- 230000005540 biological transmission Effects 0.000 claims description 12
- -1 nickel-phosphorus compound Chemical class 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- BYBLEWFAAKGYCD-UHFFFAOYSA-N Miconazole Chemical compound ClC1=CC(Cl)=CC=C1COC(C=1C(=CC(Cl)=CC=1)Cl)CN1C=NC=C1 BYBLEWFAAKGYCD-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000002048 anodisation reaction Methods 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000002816 nickel compounds Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 150000002843 nonmetals Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- OFNHPGDEEMZPFG-UHFFFAOYSA-N phosphanylidynenickel Chemical compound [P].[Ni] OFNHPGDEEMZPFG-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/005—Particular materials for seats or closure elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
Definitions
- the present invention relates to a valve for driving a clutch of a transmission of a vehicle with a movable in a housing recess spool, which at least one Steuerkana! controls.
- valves in particular of hydraulic valves, known.
- the known valves are used for hydraulic clutch control of automated transmissions.
- the valve housing and also the spool are made of aluminum.
- the surface of the control slide is hardened. It is known that the surface of the spool is hardened by hard anodization.
- valves with hard anodized spools are usually accommodated movably in an aluminum die-cast bore in the valve housing in order to control various control channels by corresponding movements.
- a valve housing may also be referred to as aluminum slide box.
- the present invention seeks to provide a valve of the type described above, which is further improved in terms of its performance and its life.
- This object can be achieved by an inventive valve for driving a clutch of a transmission of a vehicle with a movable in a housing recess spool, which controls at least one control channel, wherein the spool is provided with at least one coating, which at least one metal of the eighth subgroup and a Non-metal of the fifth main group of the periodic table.
- the proposed coating can protect the stressed regions of the control slide and the bore wall from wear in such a way that even high demands are made on the transmission behavior of the valve.
- the valve provided for the clutch driving preferably implement an applied pilot pressure of an electromagnetic actuator with almost no change in a proportional to the pilot pressure clutch pressure. Due to the lossless movement of the spool can be in a steady balance between the two acting on the respective piston surfaces pressures, with a desired clutch pressure can be adjusted by the movements of the spool in this balance of forces in cooperation with the corresponding control channels or control edges. This can be realized in the valve according to the invention without the disturbing friction or other disturbing forces between the housing wall or bore wall and the spool.
- a compound of a metal of the specified subgroup and a non-metal of the specified main group has particularly advantageous properties in order to realize optimum wear protection for the control slide.
- other metals such as e.g. Iron and / or cobalt
- another non-metal such as. As nitrogen or the like, for the coating possible.
- a nickel-phosphorus compound can be used as the coating.
- the control piston which is coated with a chemically deposited nickel compound (eg Dumi-Coat®), in particular protects an aluminum-made bore wall in the valve housing against wear.
- a nickel-phosphorus compound on the control slide in cooperation with a housing recess made of aluminum represents a particularly low coefficient of friction, which leads to no galling in the valve.
- the selected coating can protect the base material of the spool valve from the embedding of hard dirt particles.
- a possible embodiment of the present invention may provide that the valve is used as a hydraulic valve for a continuously variable transmission (CVT) control.
- the coated spool valve can be used for flow control valves, e.g. in the vehicle transmission area, are used. Due to the large power throughput, these valves are subject to special loads and tend to a particularly large hole wear.
- the inventively proposed coating of the spool in addition to the minimization of wear and the spool protect against erosion.
- a further embodiment of the present invention can provide that the valve according to the invention is designed as a pressure relief valve.
- the pressure limiting valve can be used to generate a system pressure in a controller for an automatic vehicle transmission.
- a special wear protection is advantageous due to a particularly high power throughput.
- FIGURE of the invention shows an example of an embodiment of an inventive - A - Shen valve for driving a clutch of a transmission of a vehicle, wherein the valve is designed as a hydraulic valve 1.
- the only partially shown hydraulic valve 1 has a valve housing 2 by a trained as a housing recess bore 3 is provided, in which a movable control piston 4 is guided as a spool.
- the bore is closed at one end by a sealing plug 6.
- In the bore 3 open a plurality of control channels 5, which are controlled by the moving in the bore 3 control piston 4 and acted upon by a certain pressure.
- control piston 4 is in a steady equilibrium between a pilot pressure Pvortician and a pilot pressure Pvorsteue r proportional clutch pressure P «uppiu n g-
- a coating of the surface of the control piston 4 is provided according to the invention in the illustrated hydraulic valve 1.
- the control piston 4 is coated with a chemically deposited nickel-phosphorus compound (eg with Dumi-coat®).
- a chemically deposited nickel-phosphorus compound eg with Dumi-coat®
- a coating of a nickel-phosphorus layer particularly reduces the wear between the control piston 4 and the bore 3 and thus increases the life and the performance of the hydraulic valve 1 as a whole.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Sliding Valves (AREA)
- Fluid-Driven Valves (AREA)
- Chemically Coating (AREA)
- Gear-Shifting Mechanisms (AREA)
Abstract
A valve (1), for control of a clutch in a gearbox of a vehicle, is disclosed, comprising a pilot valve (4) which may be displaced within a housing recess and which controls at least one pilot channel (5), whereby the pilot valve is provided with at least one coating, comprising at least one metal of the eighth sub-group and a non-metal of the fifth main group of the periodic table.
Description
Ventil zum Ansteuern einer Kupplung eines Getriebes eines Fahrzeuges Valve for driving a clutch of a transmission of a vehicle
Die vorliegende Erfindung betrifft ein Ventil zum Ansteuern einer Kupplung eines Getriebes eines Fahrzeuges mit einem in einer Gehäuseausnehmung bewegbaren Steuerschieber, welcher zumindest einen Steuerkana! ansteuert.The present invention relates to a valve for driving a clutch of a transmission of a vehicle with a movable in a housing recess spool, which at least one Steuerkana! controls.
Aus der Fahrzeugtechnik ist die Verwendung von derartigen Ventilen, insbesondere von Hydraulikventilen, bekannt. Beispielsweise werden die bekannten Ventile zur hydraulischen Kupplungssteuerung von automatisierten Getrieben verwendet. Üblicherweise werden die Ventilgehäuse und auch die Steuerschieber aus Aluminium hergestellt. Um einen Verschleißschutz für die Gehäuseausnehmung bzw. für die Bohrung und den darin geführten Steuerschieber zu realisieren, wird die Oberfläche des Steuerschiebers gehärtet. Es ist bekannt, dass die Oberfläche des Steuerschiebers durch Hartanodisierung gehärtet wird.From the vehicle technology, the use of such valves, in particular of hydraulic valves, known. For example, the known valves are used for hydraulic clutch control of automated transmissions. Usually, the valve housing and also the spool are made of aluminum. In order to realize wear protection for the housing recess or for the bore and the control slide guided therein, the surface of the control slide is hardened. It is known that the surface of the spool is hardened by hard anodization.
Die bekannten Ventile mit hartanodisierten Steuerschiebern sind in der Regel in einer Aluminiumdruckgussbohrung bewegbar in dem Ventilgehäuse aufgenommen, um durch entsprechende Bewegungen verschiedene Steuerkanäle anzusteuern. Ein derartiges Ventilgehäuse kann auch als Aluminiumschieberkasten bezeichnet werden.The known valves with hard anodized spools are usually accommodated movably in an aluminum die-cast bore in the valve housing in order to control various control channels by corresponding movements. Such a valve housing may also be referred to as aluminum slide box.
Es hat sich gezeigt, dass ein erhöhter Verschleiß insbesondere in der Druckgussbohrung im Bereich der Steuerkanäle aufgetreten ist. Dies beeinträchtigt die Funktion und die Lebensdauer der Ventile. Insbesondere hat sich weiter gezeigt, dass durch die ständige Bewegung des Steuerschiebers entlang der Bohrungswand Absätzen auftreten, die eine freie Bewegung des Steuerschiebers zumindest stellenweise behindert und das hydraulische Übertragungsverhalten des Ventils einschränkt. Der Verschleiß führt weiterhin zu einer erhöhten Leckage und damit zu Leistungsverlusten.It has been found that increased wear has occurred, in particular in the diecast bore in the region of the control channels. This affects the function and the life of the valves. In particular, it has further been shown that the constant movement of the spool along the bore wall heels occur that obstructs a free movement of the spool at least in places and limits the hydraulic transmission behavior of the valve. The wear continues to lead to increased leakage and thus to power losses.
Demnach liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein Ventil der eingangs beschriebenen Gattung zu schaffen, welches hinsichtlich seiner Leistungsfähigkeit und seiner Lebensdauer weiter verbessert wird.
Diese Aufgabe kann durch ein erfindungsgemäßes Ventil zum Ansteuern einer Kupplung eines Getriebes eines Fahrzeuges mit einem in einer Gehäuseausnehmung bewegbaren Steuerschieber gelöst werden, welcher zumindest ein Steuerkanal ansteuert, wobei der Steuerschieber mit zumindest einer Beschichtung versehen ist, welche zumindest ein Metall der achten Nebengruppe und ein Nichtmetall der fünften Hauptgruppe des Periodensystems um- fasst. Auf diese Weise kann ein besonders effektiver Verschleißschutz zwischen der Gehäuseausnehmung bzw. der Bohrung und dem Steuerschieber realisiert werden, so dass insgesamt die Lebensdauer und auch die Leistungsfähigkeit des erfindungsgemäßen Ventils erhöht wird. Die vorgeschlagene Beschichtung kann insbesondere die beanspruchten Bereiche des Steuerschiebers und der Bohrungswand derart vor Verschleiß schützen, dass auch hohe Anforderungen an das Übertragungsverhalten des Ventils gewährleistet werden.Accordingly, the present invention seeks to provide a valve of the type described above, which is further improved in terms of its performance and its life. This object can be achieved by an inventive valve for driving a clutch of a transmission of a vehicle with a movable in a housing recess spool, which controls at least one control channel, wherein the spool is provided with at least one coating, which at least one metal of the eighth subgroup and a Non-metal of the fifth main group of the periodic table. In this way, a particularly effective wear protection between the housing recess or the bore and the spool can be realized, so that overall the service life and the performance of the valve according to the invention is increased. In particular, the proposed coating can protect the stressed regions of the control slide and the bore wall from wear in such a way that even high demands are made on the transmission behavior of the valve.
Somit kann das zur Kupplungsansteuerung vorgesehene Ventil vorzugsweise einen angelegten Vorsteuerdruck eines elektromagnetischen Stellgliedes nahezu ohne Veränderung in einen dem Vorsteuerdruck proportionalen Kupplungsdruck umsetzen. Aufgrund der verlustfreien Bewegung kann der Steuerschieber in einem stetigen Gleichgewicht zwischen den beiden auf die jeweiligen Kolbenflächen wirkenden Drücke stehen, wobei durch die Bewegungen des Steuerschiebers in diesem Kräftegleichgewicht im Zusammenwirken mit den korrespondierenden Steuerkanälen bzw. Steuerkanten ein gewünschter Kupplungsdruck einsteilbar ist. Dies kann bei dem erfindungsgemäßen Ventil ohne die störenden Reib- oder sonstigen Störkräfte zwischen der Gehäusewand bzw. Bohrungswand und dem Steuerschieber realisiert werden.Thus, the valve provided for the clutch driving preferably implement an applied pilot pressure of an electromagnetic actuator with almost no change in a proportional to the pilot pressure clutch pressure. Due to the lossless movement of the spool can be in a steady balance between the two acting on the respective piston surfaces pressures, with a desired clutch pressure can be adjusted by the movements of the spool in this balance of forces in cooperation with the corresponding control channels or control edges. This can be realized in the valve according to the invention without the disturbing friction or other disturbing forces between the housing wall or bore wall and the spool.
Es hat sich gezeigt, dass insbesondere eine Verbindung aus einem Metall der angegebenen Nebengruppe und eines Nichtmetalls der angegebenen Hauptgruppe besonders vorteilhafte Eigenschaften aufweist, um einen optimalen Verschleißschutz für den Steuerschieber zu realisieren. Beispielsweise könnten auch andere Metalle, wie z.B. Eisen und/oder Kobalt, als Be- schichtungsmaterial verwendet werden. Des Weiteren ist auch die Verwendung eines anderen Nichtmetalls, wie z. B. Stickstoff oder dergleichen, für die Beschichtung möglich.It has been found that in particular a compound of a metal of the specified subgroup and a non-metal of the specified main group has particularly advantageous properties in order to realize optimum wear protection for the control slide. For example, other metals, such as e.g. Iron and / or cobalt, be used as coating material. Furthermore, the use of another non-metal, such as. As nitrogen or the like, for the coating possible.
Vorzugsweise kann als Beschichtung eine Nickel-Phosphor-Verbindung zum Einsatz kommen. Es hat sich gezeigt, dass der mit einer chemisch abgeschiedenen Nickelverbindung (z. B. Dumi-Coat ®) überzogene Steuerkolben bzw. Steuerschieber besonders eine aus Aluminium gefertigte Bohrungswand in dem Ventilgehäuse vor Verschleiß schützt. Dies deshalb, weil
eine Nickel-Phosphor-Verbindung an dem Steuerschieber im Zusammenwirken mit einer aus Aluminium gefertigtem Gehäuseausnehmung einen besonders geringen Reibwert darstellt, der zu keinen Fresserscheinungen bei dem Ventil führt. Zudem kann durch die gewählte Be- schichtung der Grundwerkstoff des Steuerschiebers vor der Einbettung von harten Schmutzpartikeln geschützt werden.Preferably, a nickel-phosphorus compound can be used as the coating. It has been found that the control piston, which is coated with a chemically deposited nickel compound (eg Dumi-Coat®), in particular protects an aluminum-made bore wall in the valve housing against wear. This is because a nickel-phosphorus compound on the control slide in cooperation with a housing recess made of aluminum represents a particularly low coefficient of friction, which leads to no galling in the valve. In addition, the selected coating can protect the base material of the spool valve from the embedding of hard dirt particles.
Dies gilt vor allem, wenn in vorteilhafter Weise an der Beschichtung eine Wärmehandlung durchgeführt wird. Denn aufgrund einer Wärmebehandlung kann die Härte der beschriebenen Beschichtung weiter gesteigert werden. Zudem kann dadurch die Haftung an dem Grundmaterial verbessert werden.This is especially true when a heat treatment is advantageously carried out on the coating. Because due to a heat treatment, the hardness of the coating described can be further increased. In addition, this can improve the adhesion to the base material.
Darüber hinaus wird durch die Verschleißminderung bei dem erfindungsgemäßen Ventil auch die Leckage über die Lebensdauer gering gehalten und der Wirkungsgrad des Systems insgesamt verbessert.In addition, the leakage over the life is kept low and the overall efficiency of the system improved by the wear reduction in the valve according to the invention.
Eine mögliche Ausführungsform der vorliegenden Erfindung kann vorsehen, dass das Ventil als Hydraulikventil für eine Steuerung eines stufenlos verstellbaren Getriebes (CVT) verwendet wird. Ebenso kann der beschichtete Steuerschieber für Volumenstromregelventile, z.B. im Fahrzeuggetriebebereich, eingesetzt werden. Durch den großen Leistungsdurchsatz sind diese Ventile besonderen Belastungen unterworfen und neigen zu einem besonders großen Bohrungsverschleiß. Auch hier kann die erfindungsgemäß vorgeschlagene Beschichtung des Steuerschiebers neben der Verschleißminimierung auch den Steuerschieber vor Erosion schützen.A possible embodiment of the present invention may provide that the valve is used as a hydraulic valve for a continuously variable transmission (CVT) control. Likewise, the coated spool valve can be used for flow control valves, e.g. in the vehicle transmission area, are used. Due to the large power throughput, these valves are subject to special loads and tend to a particularly large hole wear. Again, the inventively proposed coating of the spool in addition to the minimization of wear and the spool protect against erosion.
Eine weitere Ausführungsform der vorliegenden Erfindung kann vorsehen, dass das erfindungsgemäße Ventil als Druckbegrenzungsventil ausgeführt ist. Beispielsweise kann das Druckbegrenzungsventil zur Erzeugung eines Systemdrucks in einer Steuerung für ein automatisches Fahrzeuggetriebe eingesetzt werden. Auch bei diesem Ausführungsbeispiel ist aufgrund eines besonders hohen Leistungsdurchsatzes ein besonderer Verschleißschutz von Vorteil.A further embodiment of the present invention can provide that the valve according to the invention is designed as a pressure relief valve. For example, the pressure limiting valve can be used to generate a system pressure in a controller for an automatic vehicle transmission. Also in this embodiment, a special wear protection is advantageous due to a particularly high power throughput.
Nachfolgend wird die vorliegende Erfindung anhand der Zeichnung näher erläutert. Die einzige Figur der Erfindung zeigt beispielhaft ein Ausführungsbeispiel eines erfindungsgemä-
- A - ßen Ventils zum Ansteuern einer Kupplung eines Getriebes eines Fahrzeuges, bei dem das Ventil als Hydraulikventil 1 ausgeführt ist.The present invention will be explained in more detail with reference to the drawing. The single FIGURE of the invention shows an example of an embodiment of an inventive - A - Shen valve for driving a clutch of a transmission of a vehicle, wherein the valve is designed as a hydraulic valve 1.
Das nur teilweise dargestellte Hydraulikventil 1 weist ein Ventilgehäuse 2 auf, indem eine als Gehäuseausnehmung ausgebildete Bohrung 3 vorgesehen ist, in der ein bewegbarer Steuerkolben 4 als Steuerschieber geführt ist. Die Bohrung ist an einem Ende durch einen Verschlussstopfen 6 verschlossen. In die Bohrung 3 münden mehrere Steuerkanäle 5, welche durch den in der Bohrung 3 bewegten Steuerkolben 4 angesteuert werden und mit einem bestimmten Druck beaufschlagt werden.The only partially shown hydraulic valve 1 has a valve housing 2 by a trained as a housing recess bore 3 is provided, in which a movable control piston 4 is guided as a spool. The bore is closed at one end by a sealing plug 6. In the bore 3 open a plurality of control channels 5, which are controlled by the moving in the bore 3 control piston 4 and acted upon by a certain pressure.
Hierzu steht der Steuerkolben 4 in einem stetigen Gleichgewicht zwischen einem Vorsteuerdruck Pvorsteuer und einen dem Vorsteuerdruck Pvorsteuer proportionalen Kupplungsdruck P«uppiung- Die beiden Drücke wirken derart auf die jeweiligen Kolbenflächen des Steuerkolbens 4, dass durch die Bewegung des Steuerkolbens 4 ein Zusammenwirken der Steuerkanten und der korrespondierenden Steuerkanäle 5 realisiert wird, um einen gewünschten Kupplungsdruck Pκuppiung einzustellen. Da die Funktionsweise eines derartigen Hydraulikventils 1 an sich bekannt ist, wird diese hier nicht weiter beschrieben.For this purpose, the control piston 4 is in a steady equilibrium between a pilot pressure Pvorsteuer and a pilot pressure Pvorsteue r proportional clutch pressure P «uppiu n g- The two pressures acting on the respective piston surfaces of the control piston 4, that by the movement of the control piston 4, a cooperation of the Control edges and the corresponding control channels 5 is realized to set a desired clutch pressure Pκuppiu n g. Since the operation of such a hydraulic valve 1 is known per se, this will not be described further here.
Um den Verschleiß zwischen dem Steuerkolben 4 und der Wand der Bohrung 3 möglichst gering zu halten, wird bei dem dargestellten Hydraulikventil 1 erfindungsgemäß eine Be- schichtung der Oberfläche des Steuerkolbens 4 vorgesehen. Der Steuerkolben 4 wird dabei mit einer chemisch abgeschiedenen Nickel-Phosphor-Verbindung (z. B. mit Dumi-coat ®) beschichtet. Es sind auch andere. Verbindungen als Beschichtung denkbar. Jedoch hat sich gezeigt, dass eine Beschichtung aus einer Nickel-Phosphorschicht besonders den Verschleiß zwischen dem Steuerkolben 4 und der Bohrung 3 verringert und somit die Lebensdauer und die Leistungsfähigkeit des Hydraulikventils 1 insgesamt erhöht.
In order to keep the wear between the control piston 4 and the wall of the bore 3 as low as possible, a coating of the surface of the control piston 4 is provided according to the invention in the illustrated hydraulic valve 1. The control piston 4 is coated with a chemically deposited nickel-phosphorus compound (eg with Dumi-coat®). There are others too. Compounds conceivable as a coating. However, it has been found that a coating of a nickel-phosphorus layer particularly reduces the wear between the control piston 4 and the bore 3 and thus increases the life and the performance of the hydraulic valve 1 as a whole.
BezuqszeichenlisteLIST OF REFERENCES
1. Hydraulikventil1. Hydraulic valve
2. Ventilgehäuse2. Valve housing
3. Bohrung3rd hole
4. Steuerkolben4. Control piston
5. Steuerkanäle5. Control channels
6. Verschlussstopfen
6. Plug
Claims
1. Ventil zum Ansteuern einer Kupplung eines Getriebes eines Fahrzeuges mit einem in einer Gehäuseausnehmung bewegbaren Steuerschieber, welcher zumindest einen Steuerkanal ansteuert, dadurch gekennzeichnet, dass der Steuerschieber mit zumindest einer Beschichtung versehen ist, welche zumindest ein Metall der achten Nebengruppe und ein Nichtmetall der fünften Hauptgruppe des Periodensystems umfasst.1. Valve for driving a clutch of a transmission of a vehicle with a movable in a housing recess spool, which controls at least one control channel, characterized in that the spool is provided with at least one coating, which at least one metal of the eighth subgroup and a non-metal of the fifth Main group of the Periodic Table includes.
2. Ventil nach Anspruch 1 , dadurch gekennzeichnet, dass als Beschichtung des Steuerschiebers eine Nickel-Phosphor-Verbindung vorgesehen ist.2. Valve according to claim 1, characterized in that a nickel-phosphorus compound is provided as a coating of the spool.
3. Ventil nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass an der Beschichtung eine Wärmehandlung durchführbar ist.3. Valve according to one of the preceding claims, characterized in that on the coating, a heat treatment is feasible.
4. Ventil nach einen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es als Hydraulikventil (1) zum Steuern eines stufenlos verstellbaren Getriebes (CVT) ausgebildet ist.4. Valve according to one of the preceding claims, characterized in that it is designed as a hydraulic valve (1) for controlling a continuously variable transmission (CVT).
5. Ventil nach einen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es als Volumenstromregelventil ausgebildet ist.5. Valve according to one of the preceding claims, characterized in that it is designed as a flow control valve.
6. Ventil nach einen der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es als Druckbegrenzungsventil ausgebildet ist. 6. Valve according to one of the preceding claims, characterized in that it is designed as a pressure relief valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005006196 | 2005-02-11 | ||
| PCT/DE2006/000059 WO2006084427A1 (en) | 2005-02-11 | 2006-01-18 | Valve for control of a clutch in a gearbox of a vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1851469A1 true EP1851469A1 (en) | 2007-11-07 |
Family
ID=36203311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06705798A Withdrawn EP1851469A1 (en) | 2005-02-11 | 2006-01-18 | Valve for control of a clutch in a gearbox of a vehicle |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080035878A1 (en) |
| EP (1) | EP1851469A1 (en) |
| JP (1) | JP2008530452A (en) |
| CN (1) | CN101120194A (en) |
| DE (1) | DE112006000142A5 (en) |
| WO (1) | WO2006084427A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5316263B2 (en) * | 2009-06-30 | 2013-10-16 | 株式会社ジェイテクト | solenoid valve |
| US9739275B2 (en) * | 2012-02-01 | 2017-08-22 | Weatherford Technology Holdings, Llc | Self-cleaning disc valve for piston pump |
| JP2015112604A (en) * | 2013-12-06 | 2015-06-22 | 株式会社ケーヒン | Casting and method of manufacturing the same |
| US9506548B2 (en) * | 2014-03-12 | 2016-11-29 | Ford Global Technologies | Control valve and method of controlling torque converter lock-up clutch |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2645134A1 (en) * | 1975-10-08 | 1977-08-25 | Nissan Motor | Wear and corrosion resistant aluminium cylinder - operating with a piston provided on the internal surface with an aluminium oxide or nickel coating |
| DE3023475C2 (en) * | 1980-06-24 | 1984-08-30 | Leybold-Heraeus GmbH, 5000 Köln | Metal sealed valve |
| US4577549A (en) * | 1984-03-28 | 1986-03-25 | Automotive Products Plc | Hydraulic cylinder provided with low friction plated internal surface |
| JPH081217B2 (en) * | 1986-11-25 | 1996-01-10 | トヨタ自動車株式会社 | Combination sliding member |
| JP2570840B2 (en) * | 1988-12-27 | 1997-01-16 | トヨタ自動車株式会社 | Combination sliding member |
| DE9010077U1 (en) * | 1989-08-07 | 1990-10-04 | Alcan Deutschland GmbH, 3400 Göttingen | Internal combustion engine |
| US6089843A (en) * | 1997-10-03 | 2000-07-18 | Sumitomo Electric Industries, Ltd. | Sliding member and oil pump |
| JP2002027723A (en) * | 2000-07-11 | 2002-01-25 | Denso Corp | Manufacturing method for electromagnetic drive |
| DE10041386B4 (en) * | 2000-08-23 | 2008-08-21 | Daimler Ag | System for optimizing the efficiency of an oil supply |
| JP2004003599A (en) * | 2002-03-29 | 2004-01-08 | Denso Corp | Electromagnetic drive device |
-
2006
- 2006-01-18 DE DE112006000142T patent/DE112006000142A5/en not_active Ceased
- 2006-01-18 JP JP2007554416A patent/JP2008530452A/en not_active Withdrawn
- 2006-01-18 EP EP06705798A patent/EP1851469A1/en not_active Withdrawn
- 2006-01-18 CN CN200680004495.9A patent/CN101120194A/en active Pending
- 2006-01-18 WO PCT/DE2006/000059 patent/WO2006084427A1/en not_active Ceased
-
2007
- 2007-08-10 US US11/891,643 patent/US20080035878A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006084427A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101120194A (en) | 2008-02-06 |
| WO2006084427A1 (en) | 2006-08-17 |
| JP2008530452A (en) | 2008-08-07 |
| US20080035878A1 (en) | 2008-02-14 |
| DE112006000142A5 (en) | 2007-10-04 |
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