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EP1382807A2 - Spool valve with oil filter for variable camshaft drive - Google Patents

Spool valve with oil filter for variable camshaft drive Download PDF

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Publication number
EP1382807A2
EP1382807A2 EP03013770A EP03013770A EP1382807A2 EP 1382807 A2 EP1382807 A2 EP 1382807A2 EP 03013770 A EP03013770 A EP 03013770A EP 03013770 A EP03013770 A EP 03013770A EP 1382807 A2 EP1382807 A2 EP 1382807A2
Authority
EP
European Patent Office
Prior art keywords
oil
solenoid valve
engine
variable camshaft
oil filter
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
Application number
EP03013770A
Other languages
German (de)
French (fr)
Other versions
EP1382807B1 (en
EP1382807A3 (en
Inventor
Leonhard Halmanseger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1382807A2 publication Critical patent/EP1382807A2/en
Publication of EP1382807A3 publication Critical patent/EP1382807A3/en
Application granted granted Critical
Publication of EP1382807B1 publication Critical patent/EP1382807B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • 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
    • 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
    • F01L2001/3443—Solenoid driven 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
    • 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
    • F01L2001/34436—Features or method for avoiding malfunction due to foreign matters in oil
    • F01L2001/3444—Oil filters

Definitions

  • the present invention relates to a variable camshaft timing according to the Preamble of claim 1.
  • the object of the invention is to provide a camshaft control, in which the Problem of failure of the solenoid valves in the first "life phase" of the engine is avoided by "original dirt".
  • the basic principle of the invention is prior to the engine oil inlet of the solenoid valve
  • a filter or a sieve after the running-in phase of the engine can be removed during the inspection.
  • the sieve is intended during the running-in phase of the engine "the original dirt", d. H. Chips and abrasion catch the engine or cylinder head and an intrusion into the solenoid valve to prevent.
  • After the running-in phase of the engine z. B. after 15,000 km Usually the entire "original dirt washed out of the engine.”
  • the filter or sieve before the engine oil inlet of the solenoid valve can then in the context of Inspection to be removed. It does not need to be replaced by a new filter or sieve to become.
  • the filter or screen prevents penetration of the "original dirt” in the Magnetic valve. A pollution-related failure of the solenoid valve "Urschmutz” is thus prevented.
  • At the first inspection only that needs Filter to be removed. An exchange of the solenoid valve is unnecessary.
  • the oil filter or oil strainer is directly on Engine oil inlet of the solenoid valve arranged.
  • the solenoid valve is in an inspection with a few simple steps from the motor housing, in particular removable from the cylinder head.
  • the oil filter or oil strainer attached directly to the solenoid valve and can be used together with the Solenoid valve to be removed. After removing the solenoid valve that needs Oil filter or oil strainer only to be removed from the solenoid valve.
  • the solenoid valve has a Shank section on.
  • the engine oil input of the solenoid valve is through one or more distributed in the circumferential direction of the shaft portion arranged radial bores educated.
  • control outputs can be provided on the shaft section, which may also be formed by radial bores.
  • the Shaft portion of the solenoid valve in the engine oil input a circumferential Groove on.
  • the oil filter or oil strainer is inserted into this groove.
  • the oil filter or sieve may have the shape of a Manschnette, in the Groove of the shaft portion is inserted.
  • Fig. 1 shows schematically the end face 1 of an engine block of a V-engine with two Cylinder heads 2, 3.
  • two solenoid valves 4, 5 used in a known manner to control an adjustment of the Camshaft control are provided.
  • the solenoid valves 4, 5 covered by a cover 6.
  • Fig. 2 shows details of the solenoid valve 4.
  • the solenoid valve 4 has a rear Section 7, in which the solenoids and the armature are housed, the be powered by a power connector 8 with electricity.
  • the solenoid valve 4 has Further, a front, substantially cylindrical portion 9, which by three adjacent circumferential grooves 10 - 12 is formed.
  • the shaft section 9 has in the grooves 10 - 12 each arranged a plurality of circumferentially distributed radial bores 15, which with the interior of the shaft portion 9 in conjunction stand.
  • Inside the shaft portion 9 is a by electrical actuation arranged the solenoid valve sliding control piston.
  • the middle hole 14 forms in the embodiment shown here the engine oil input of Solenoid valve 4.
  • the other two holes 13, 15 act as control outputs, via a duct system or line system with the adjustment the camshaft control are in pressure communication. That is, engine oil is flowing via the bore 14 in the solenoid valve and the control bores 13, 15 off out of the solenoid valve.
  • FIG. 3 shows a receiving bore 16 provided in the cylinder head 2 (see FIG. in which the solenoid valve 4 or more precisely the shaft 9 of the solenoid valve used becomes.
  • transverse channels 17 - 19 are provided, which are the holes 13 - 15 are assigned in the shaft 9 of the solenoid valve 4, as well as a likewise in the receiving bore 16 opening longitudinal bore 20th
  • the basic principle of the present invention is now in front of the engine oil inlet the solenoid valve 4, d. H. before the holes 14, an oil filter or an oil screen to arrange.
  • the oil filter or oil strainer inserted into the circumferential groove 11 of the shaft 9 of the solenoid valve 4.
  • FIGS. 4-7 show a first embodiment of such an oil filter or Oil strainer 21.
  • the oil filter or oil strainer 21 has a carrier body 22, which, as on Best seen in FIGS. 5 and 6, from two semi-cylindrical carrier body halves 22a, 22b, which at one end via a pivot joint 23 with each other are connected.
  • the pivot joint 23 may for example by a Material necking be formed.
  • the other two ends 24, 25 of the semi-cylindrical Carrier body halves 22a, 22b form a clip closure.
  • Fig. 5 shows the fauxgeclipsten state
  • Fig. 6 shows the opened state.
  • the carrier body halves 22a, 22b have a plurality of recesses 26 distributed in the circumferential direction 33, via the engine oil from radially outside to radially inside into the solenoid valve 4 can flow.
  • About the recesses 26, d. H. over the entire circumference of the Carrier body 22 is placed a screen plate 34 and fixed to the carrier body 22.
  • the Oil filter or oil sieve 21 is in the open state (see Fig .. 6) over the shaft of the solenoid valve 4 and inserted into the groove 11 and then clipped together.
  • the solenoid valve 4 is dismantled in a few simple steps and the oil filter or oil strainer 21 is removed from the groove 11. Subsequently, the solenoid valve 4 rebuilt and now without oil filter or oil strainer.
  • the oil filter or oil strainer is here by a cuff-like Screen plate 34 is formed, which is inserted into the groove 11 of the shaft 9 of the solenoid valve is.
  • the two end sections 35, 36 of the screen plate are here by a laser spot welding 37 interconnected.
  • the one end portion 36 has additionally a tab-like extension 38 which extends in the circumferential direction from the end portion 36 protrudes.
  • the solenoid valve 9 is together with removed the screen plate 34. With a pair of needle nose pliers can the tab-like extension 38 are taken. Subsequently, the seam 37 is torn open with the needle-nose pliers and the oil strainer 21 is removed from the shaft 9 of the solenoid valve 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The variable camshaft controller has an adjuster for a camshaft for adjusting opening and closing times of valves in the engine. The angular position of the camshaft can be controlled by a magnetic valve with an engine oil inlet connected to the engine cooling circuit. An oil filter or oil sieve (21) associated with the magnetic valve is arranged before the engine oil inlet.

Description

Die vorliegende Erfindung betrifft eine variable Nockenwellensteuerung gemäß dem Oberbegriff des Patentanspruches 1.The present invention relates to a variable camshaft timing according to the Preamble of claim 1.

Aus der DE 198 31 515 A1 ist eine derartige variable Nockenwellensteuerung bekannt. In Abhängigkeit vom Lastzustand und von der Drehzahl des Motors kann die Nockenwelle mittels einer an den Motorölkreislauf angeschlossenen Verstelleinrichtung verdreht werden. Durch die Verdrehung der Nockenwelle können die Öffnungs- und Schließzeiten sowie die Ventilüberschneidung verkürzt oder verlängert werden. Die Verdrehstellung der Nockenwelle ist durch ein Magnetventil steuerbar, das an den Motorölkreislauf angeschlossen ist. Das Motoröl wird aus der Ölwanne von der Ölpumpe angesaugt und über den Ölfilter in den Motorblock sowie in den Zylinderkopf gepumpt. Von dort strömt das Motoröl zum Magnetventil der Nockenwellensteuerung.From DE 198 31 515 A1 such a variable camshaft control is known. Depending on the load condition and the speed of the engine, the Camshaft by means of an adjusting device connected to the engine oil circuit to be twisted. Due to the rotation of the camshaft, the opening and closing times and the valve overlap shortened or extended become. The rotational position of the camshaft is controlled by a solenoid valve, which is connected to the engine oil circuit. The engine oil is removed from the oil pan sucked by the oil pump and the oil filter in the engine block and in the Cylinder head pumped. From there, the engine oil flows to the solenoid valve of the camshaft control.

Bei der Fertigung neuer Motoren ist es fast unvermeidlich, dass im Motorblock bzw. Zylinderkopf Metallspäne bzw. Verschmutzungen zurück bleiben. Ferner besteht die Gefahr, dass sich Grate von Bohrungsverschneidungen der Kurbelgehäuseund/oder Zylinderkopfwandungen ablösen und über das Motoröl zum Magnetventil der Nockenwellensteuerung gelangen. Dies kann zum "Blockieren" des Kolbens des Magnetventils und somit zum Ausfall der Nockenwellensteuerung führen. When manufacturing new engines, it is almost inevitable that in the engine block or Cylinder head Metal chips or soiling remain behind. Furthermore, there is the Danger that burrs of Bohrungsschneckungen the crankcase and / or Remove the cylinder head walls and the engine oil to the solenoid valve get the camshaft control. This can "block" the piston of the Solenoid valve and thus lead to failure of the camshaft control.

Das Problem, däss Grate, Späne bzw. Abrieb über das Motoröl zum Magnetventil der Nockenwellensteuerung gelangen, tritt zwar meist nur in der ersten "Lebensphase" des Motors auf, z. B. bis zu einer Laufleistung von etwa 15.000 km, da danach der "Urschmutz" bzw. Späne und Grate üblicherweise von den Motorund Zylinderkopfwandungen abgespült sind. Die Rückstände können dann über das Motoröl zu den Magnetventilen der Nockenwellensteuerung gelangen und die Magnetventile schädigen. Häufig muss dann bei der Inspektion das gesamte Magnetventil ausgetauscht werden, was mit erheblichen Kosten verbunden ist.The problem, burrs, chips or abrasion over the engine oil to the solenoid valve get the camshaft control occurs, although usually only in the first "Life phase" of the engine, z. B. up to a mileage of about 15,000 km, since then the "original dirt" or chips and burrs usually from the engine and Cylinder head walls are rinsed off. The residues can then over the Engine oil get to the solenoid valves of the camshaft control and the Damage solenoid valves. Often then at the inspection the entire Solenoid valve are replaced, which is associated with significant costs.

Aufgabe der Erfindung ist es, eine Nockenwellensteuerung zu schaffen, bei der das Problem des Ausfalls der Magnetventile in der ersten "Lebensphase" des Motors durch "Urschmutz" vermieden wird.The object of the invention is to provide a camshaft control, in which the Problem of failure of the solenoid valves in the first "life phase" of the engine is avoided by "original dirt".

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.This object is solved by the features of claim 1. advantageous Refinements and developments of the invention are the dependent claims remove.

Das Grundprinzip der Erfindung besteht darin, vor dem Motoröleingang des Magnetventils ein Filter bzw. ein Sieb anzuordnen, das nach der Einlaufphase des Motors bei der Inspektion entfernt werden kann. Das Sieb ist dazu vorgesehen, während der Einlaufphase des Motors "den Urschmutz", d. h. Späne und Abrieb aus dem Motor bzw. Zylinderkopf aufzufangen und ein Eindringen in das Magnetventil zu verhindern. Nach der Einlaufphase des Motors, z. B. nach 15.000 km ist üblicherweise der gesamte "Urschmutz aus dem Motor ausgewaschen. Das Filter bzw. Sieb vor dem Motoröleingang des Magnetventils kann dann im Rahmen der Inspektion entfernt werden. Es braucht nicht durch ein neues Filter bzw. Sieb ersetzt zu werden. Das Filter bzw. Sieb verhindert ein Eindringen des "Urschmutz" in das Magnetventil. Ein verschmutzungsbedingter Ausfall des Magnetventils durch "Urschmutz" wird somit verhindert. Bei der ersten Inspektion braucht lediglich das Filter entfernt zu werden. Ein Austausch des Magnetventils erübrigt sich.The basic principle of the invention is prior to the engine oil inlet of the solenoid valve To arrange a filter or a sieve, after the running-in phase of the engine can be removed during the inspection. The sieve is intended during the running-in phase of the engine "the original dirt", d. H. Chips and abrasion catch the engine or cylinder head and an intrusion into the solenoid valve to prevent. After the running-in phase of the engine, z. B. after 15,000 km Usually the entire "original dirt washed out of the engine." The filter or sieve before the engine oil inlet of the solenoid valve can then in the context of Inspection to be removed. It does not need to be replaced by a new filter or sieve to become. The filter or screen prevents penetration of the "original dirt" in the Magnetic valve. A pollution-related failure of the solenoid valve "Urschmutz" is thus prevented. At the first inspection, only that needs Filter to be removed. An exchange of the solenoid valve is unnecessary.

Nach einer Weiterbildung der Erfindung ist das Ölfilter bzw. Ölsieb unmittelbar am Motoröleingang des Magnetventils angeordnet. According to a development of the invention, the oil filter or oil strainer is directly on Engine oil inlet of the solenoid valve arranged.

Das Magnetventil ist bei einer Inspektion mit wenigen Handgriffen vom Motorgehäuse, insbesondere vom Zylinderkopf demontierbar. Vorzugsweise ist das Ölfilter bzw. Ölsieb unmittelbar am Magnetventil befestigt und kann zusammen mit dem Magnetventil ausgebaut werden. Nach dem Ausbau des Magnetventils braucht das Ölfilter bzw. Ölsieb lediglich noch vom Magnetventil entfernt zu werden.The solenoid valve is in an inspection with a few simple steps from the motor housing, in particular removable from the cylinder head. Preferably, the oil filter or oil strainer attached directly to the solenoid valve and can be used together with the Solenoid valve to be removed. After removing the solenoid valve that needs Oil filter or oil strainer only to be removed from the solenoid valve.

Nach einer Weiterbildung der Erfindung weist das Magnetventil einen Schaftabschnitt auf. Der Motoröleingang des Magnetventils ist durch eine oder mehrere in Umfangsrichtung des Schaftabschnitts verteilt angeordnete radiale Bohrungen gebildet. Ferner können am Schaftabschnitt Steuerausgänge vorgesehen sein, die ebenfalls durch radiale Bohrungen gebildet sein können. Vorzugsweise weist der Schaftabschnitt des Magnetventils im Bereich des Motoröleingangs eine umlaufende Nut auf.According to a development of the invention, the solenoid valve has a Shank section on. The engine oil input of the solenoid valve is through one or more distributed in the circumferential direction of the shaft portion arranged radial bores educated. Furthermore, control outputs can be provided on the shaft section, which may also be formed by radial bores. Preferably, the Shaft portion of the solenoid valve in the engine oil input a circumferential Groove on.

Nach einer Weiterbildung der Erfindung ist das Ölfilter bzw. Ölsieb in diese Nut eingesetzt. Das Ölfilter bzw. Ölsieb kann die Form einer Manschnette haben, die in die Nut des Schaftabschnitts eingesetzt ist.According to a development of the invention, the oil filter or oil strainer is inserted into this groove. The oil filter or sieve may have the shape of a Manschnette, in the Groove of the shaft portion is inserted.

Hinsichtlich der konstruktiven Gestaltung des Ölfilters bzw. Ölsiebs schlägt die Erfindung zwei verschiedene Varianten vor:

  • a) Bei der einen Variante weist das Ölfilter bzw. Ölsieb einen z. B. aus Kunststoff bestehenden Trägerkörper auf, der durch zwei halbzylindrische Hälften gebildet ist, die an ihren ersten Enden über ein Schwenkgelenk miteinander verbunden sind und die an ihren zweiten Enden öffenbar, z. B. mit einem Clipverschluss miteinander verbunden. Die halbkreiszylindrischen Hälften des Trägerkörpers weisen über den Umfang verteilt mehrere Ausnehmungen auf. Ferner ist ein sich über den gesamten Umfang des Trägerkörpers erstreckendes Filter- bzw. Siebelement vorgesehen, das am Trägerkörper fixiert ist.
  • b) Bei der anderen Variante ist das Ölfilter bzw. Ölsieb durch ein Siebblech gebildet. Das Siebblech ist vergleichbar mit einem "Schnittblech", wie es von Trockenrasierern bekannt ist. Vorzugsweise ist das Siebblech unmittelbar in die Nut des Schaftabschnitts des Magnetventils eingesetzt. Die beiden Enden des Siebblechs können beispielsweise durch Laserpunktschweißung miteinander verbunden werden. Vorzugsweise ist ein Endabschnitt der miteinander verschweißten Endbereiche des Siebbleches laschenartig verlängert. Dieser Endabschnitt fungiert als "Aufreißlasche". Bei einer Inspektion kann dann beispielsweise mit einer Spitzzange die Aufreißlasche gegriffen und das Siebblech aufgerissen und vom Magnetventilschaft entfernt werden.
    • With regard to the structural design of the oil filter or oil sieve, the invention proposes two different variants:
  • a) In one variant, the oil filter or oil strainer has a z. B. made of plastic carrier body, which is formed by two semi-cylindrical halves, which are interconnected at their first ends via a pivot joint and the openable at their second ends, z. B. connected to each other with a clip closure. The semicircular cylindrical halves of the carrier body have distributed over the circumference a plurality of recesses. Furthermore, an over the entire circumference of the carrier body extending filter or sieve element is provided, which is fixed to the carrier body.
  • b) In the other variant, the oil filter or oil screen is formed by a screen plate. The screen plate is similar to a "cut sheet", as it is known by dry shavers. Preferably, the screen plate is inserted directly into the groove of the shaft portion of the solenoid valve. The two ends of the screen plate can be connected to each other, for example by laser spot welding. Preferably, an end portion of the welded together end portions of the screen plate is extended lashing. This end section acts as a "pull-tab". During an inspection, the tear-open tab can then be gripped, for example with a pair of needle-nose pliers, and the perforated plate can be torn open and removed from the solenoid valve stem.

    • Im folgenden wird die Erfindung anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläuter t. Es zeigen:

    Fig. 1
    die prinzipielle Anordnung von Magnetventilen einer Nockenwellensteuerung am Zylinderkopf;
    Fig. 2
    ein Magnetventil einer Nockenwellensteuerung;
    Fig. 3
    eine zylindrische Ausnehmung im Zylinderkopf, in die das Magnetventil der Fig. 2 eingesetzt wird;
    Fig. 4 - 7
    verschiedene Ansichten eines durch einen Trägerkörper gebildeten Ölfilters bzw. Ölsiebs;
    Fig. 8, 9
    ein Ausführungsbeispiel, bei dem das Ölfilter bzw. Ölsieb als einfaches Siebblech ausgebildet ist.
    In the following the invention with reference to exemplary embodiments in conjunction with the drawings erläuter t. Show it:
    Fig. 1
    the basic arrangement of solenoid valves of a camshaft control on the cylinder head;
    Fig. 2
    a solenoid valve of a camshaft controller;
    Fig. 3
    a cylindrical recess in the cylinder head into which the solenoid valve of Fig. 2 is inserted;
    Fig. 4-7
    different views of an oil filter formed by a carrier or oil filter;
    Fig. 8, 9
    an embodiment in which the oil filter or oil strainer is designed as a simple screen plate.

    Fig. 1 zeigt schematisch die Stirnseite 1 eines Motorblocks eines V-Motors mit zwei Zylinderköpfen 2, 3. In die Stirnseite des Zylinderkopfs 2 sind zwei Magnetventile 4, 5 eingesetzt, die in bekannter Weise zur Steuerung einer Verstelleinrichtung der Nockenwellensteuerung vorgesehen sind. Im montierten Zustand sind die Magnetventile 4, 5 durch einen Deckel 6 abgedeckt.Fig. 1 shows schematically the end face 1 of an engine block of a V-engine with two Cylinder heads 2, 3. In the front side of the cylinder head 2 are two solenoid valves 4, 5 used in a known manner to control an adjustment of the Camshaft control are provided. In the assembled state, the solenoid valves 4, 5 covered by a cover 6.

    Fig. 2 zeigt Einzelheiten des Magnetventils 4. Das Magnetventil 4 weist einen hinteren Abschnitt 7 auf, in dem die Magnetspulen und der Anker untergebracht sind, die über einen Stromanschluss 8 mit Strom versorgt werden. Das Magnetventil 4 weist ferner einen vorderen, im wesentlichen zylindrischen Abschnitt 9 auf, der durch drei nebeneinanderliegende umlaufende Nuten 10 - 12 gebildet ist. Der Schaftabschnitt 9 weist in den Nuten 10 - 12 jeweils mehrere in Umfangsrichtung verteilt angeordnete radiale Bohrungen 15 auf, die mit dem Inneren des Schaftabschnitts 9 in Verbindung stehen. Im Inneren des Schaftabschnitts 9 ist ein durch elektrische Betätigung des Magnetventils verschiebbarer Steuerkolben angeordnet. Die mittlere Bohrung 14 bildet bei dem hier gezeigten Ausführungsbeispiel den Motoröleingang des Magnetventils 4. Die anderen beiden Bohrungen 13, 15 fungieren als Steuerausgänge, die über ein Kanalsystem bzw. Leitungssystem mit der Verstelleinrichtung der Nockenwellensteuerung in Druckverbindung stehen. Das heißt, Motoröl strömt über die Bohrung 14 in das Magnetventil und über die Steuerbohrungen 13, 15 aus dem Magnetventil heraus.Fig. 2 shows details of the solenoid valve 4. The solenoid valve 4 has a rear Section 7, in which the solenoids and the armature are housed, the be powered by a power connector 8 with electricity. The solenoid valve 4 has Further, a front, substantially cylindrical portion 9, which by three adjacent circumferential grooves 10 - 12 is formed. The shaft section 9 has in the grooves 10 - 12 each arranged a plurality of circumferentially distributed radial bores 15, which with the interior of the shaft portion 9 in conjunction stand. Inside the shaft portion 9 is a by electrical actuation arranged the solenoid valve sliding control piston. The middle hole 14 forms in the embodiment shown here the engine oil input of Solenoid valve 4. The other two holes 13, 15 act as control outputs, via a duct system or line system with the adjustment the camshaft control are in pressure communication. That is, engine oil is flowing via the bore 14 in the solenoid valve and the control bores 13, 15 off out of the solenoid valve.

    Fig. 3 zeigt eine im Zylinderkopf 2 (vgl. Fig. 1) vorgesehene Aufnahmebohrung 16, in die das Magnetventil 4 bzw. genauer gesagt der Schaft 9 des Magnetventils eingesetzt wird. Im Zylinderkopf 2 sind Querkanäle 17 - 19 vorgesehen, die den Bohrungen 13 - 15 im Schaft 9 des Magnetventils 4 zugeordnet sind, sowie eine ebenfalls in die Aufnahmebohrung 16 mündende Längsbohrung 20.3 shows a receiving bore 16 provided in the cylinder head 2 (see FIG. in which the solenoid valve 4 or more precisely the shaft 9 of the solenoid valve used becomes. In the cylinder head 2 transverse channels 17 - 19 are provided, which are the holes 13 - 15 are assigned in the shaft 9 of the solenoid valve 4, as well as a likewise in the receiving bore 16 opening longitudinal bore 20th

    Das Grundprinzip der vorliegenden Erfindung besteht nun darin, vor dem Motoröleingang des Magnetventils 4, d. h. vor den Bohrungen 14 ein Ölfilter bzw. ein Ölsieb anzuordnen. Bei dem hier gezeigten Ausführungsbeispiel wird das Ölfilter bzw. Ölsieb in die umlaufende Nut 11 des Schafts 9 des Magnetventils 4 eingesetzt.The basic principle of the present invention is now in front of the engine oil inlet the solenoid valve 4, d. H. before the holes 14, an oil filter or an oil screen to arrange. In the embodiment shown here, the oil filter or oil strainer inserted into the circumferential groove 11 of the shaft 9 of the solenoid valve 4.

    Die Fig. 4 - 7 zeigen ein erstes Ausführungsbeispiel eines solchen Ölfilters bzw. Ölsiebs 21. Das Ölfilter bzw. Ölsieb 21 weist einen Trägerkörper 22 auf, der, wie am besten aus den Fig. 5 und 6 ersichtlich ist, aus zwei halbzylindrischen Trägerkörperhälften 22a, 22b besteht, die an einem Ende über ein Schwenkgelenk 23 miteinander verbunden sind. Das Schwenkgelenk 23 kann beispielsweise durch eine Materialeinschnürung gebildet sein. Die anderen beiden Enden 24, 25 der halbzylindrischen Trägerkörperhälften 22a, 22b bilden einen Clipverschluss. Fig. 5 zeigt den zusammengeclipsten Zustand, Fig. 6 den geöffneten Zustand. Die Trägerkörperhälften 22a, 22b weisen in Umfangsrichtung verteilt mehrere Ausnehmungen 26 - 33 auf, über die Motoröl von radial außen nach radial innen in das Magnetventil 4 strömen kann. Über die Ausnehmungen 26, d. h. über den gesamten Umfang des Trägerkörpers 22 ist ein Siebblech 34 gelegt und am Trägerkörper 22 fixiert. Das Ölfilter bzw. Ölsieb 21 wird im geöffneten Zustand (vgl. Fig. 6) über den Schaft 9 des Magnetventils 4 gestülpt und in die Nut 11 eingesetzt und anschließend zusammengeclipst. Zum Beispiel bei der ersten Inspektion, d. h. nach der Einlaufphase des Motors, wird mit wenigen Handgriffen das Magnetventil 4 demontiert und das Ölfilter bzw. Ölsieb 21 aus der Nut 11 entfernt. Anschließend wird das Magnetventil 4 wieder eingebaut und zwar jetzt ohne Ölfilter bzw. Ölsieb.FIGS. 4-7 show a first embodiment of such an oil filter or Oil strainer 21. The oil filter or oil strainer 21 has a carrier body 22, which, as on Best seen in FIGS. 5 and 6, from two semi-cylindrical carrier body halves 22a, 22b, which at one end via a pivot joint 23 with each other are connected. The pivot joint 23 may for example by a Material necking be formed. The other two ends 24, 25 of the semi-cylindrical Carrier body halves 22a, 22b form a clip closure. Fig. 5 shows the zusammengeclipsten state, Fig. 6 shows the opened state. The carrier body halves 22a, 22b have a plurality of recesses 26 distributed in the circumferential direction 33, via the engine oil from radially outside to radially inside into the solenoid valve 4 can flow. About the recesses 26, d. H. over the entire circumference of the Carrier body 22 is placed a screen plate 34 and fixed to the carrier body 22. The Oil filter or oil sieve 21 is in the open state (see Fig .. 6) over the shaft of the solenoid valve 4 and inserted into the groove 11 and then clipped together. For example, at the first inspection, d. H. after the warm-up phase of the engine, the solenoid valve 4 is dismantled in a few simple steps and the oil filter or oil strainer 21 is removed from the groove 11. Subsequently, the solenoid valve 4 rebuilt and now without oil filter or oil strainer.

    Die Fig. 8, 9 zeigen in schematischer Darstellung eine andere Variante eines Ölfilters bzw. Ölsiebs. Das Ölfilter bzw. Ölsieb ist hier durch ein manschettenartiges Siebblech 34 gebildet, das in die Nut 11 des Schafts 9 des Magnetventils eingesetzt ist. Die beiden Endabschnitte 35, 36 des Siebblechs sind hier durch eine Laserpunktschweißung 37 miteinander verbunden. Der eine Endabschnitt 36 weist zusätzlich einen laschenartigen Fortsatz 38 auf, der in Umfangsrichtung vom Endabschnitt 36 absteht. Bei der ersten Inspektion wird das Magnetventil 9 zusammen mit dem Siebblech 34 ausgebaut. Mit einer Spitzzange kann der laschenartige Fortsatz 38 gefasst werden. Anschließend wird die Naht 37 mit der Spitzzange aufgerissen und das Ölsieb 21 vom Schaft 9 des Magnetventils 4 entfernt.8, 9 show a schematic representation of another variant of an oil filter or oil strainer. The oil filter or oil strainer is here by a cuff-like Screen plate 34 is formed, which is inserted into the groove 11 of the shaft 9 of the solenoid valve is. The two end sections 35, 36 of the screen plate are here by a laser spot welding 37 interconnected. The one end portion 36 has additionally a tab-like extension 38 which extends in the circumferential direction from the end portion 36 protrudes. In the first inspection, the solenoid valve 9 is together with removed the screen plate 34. With a pair of needle nose pliers can the tab-like extension 38 are taken. Subsequently, the seam 37 is torn open with the needle-nose pliers and the oil strainer 21 is removed from the shaft 9 of the solenoid valve 4.

    Bei beiden Varianten kann also das Ölfilter bzw. Ölsieb wenn es verstopft ist, z. B. bei der ersten Inspektion, vom Magnetventil 4 entfernt werden. Anschließend wird das Magnetventil 4 wieder eingebaut und zwar ohne Ölfilter bzw. Ölsieb.In both variants, so the oil filter or oil strainer if it is clogged, z. B. at the first inspection, be removed from the solenoid valve 4. Subsequently, will the solenoid valve 4 installed again and without oil filter or oil strainer.

    Claims (12)

    Variable Nockenwellensteuerung für Verbrennungsmotoren, mit
    einer Verstelleinrichtung zum Verstellen einer Nockenwelle, wobei durch das Verstellen der Nockenwelle Öffnungs- und Schließzeiten von Ventilen des Verbrennungsmotors verstellbar sind, und die Verdrehstellung der Nockenwelle durch ein Magnetventil (4) steuerbar ist, das einen Motoröleingang (14) aufweist, der an den Motorölkreislauf angeschlossen ist, dadurch gekennzeichnet, dass vor dem Motoröleingang (14) ein dem Magnetventil (4) zugeordnetes Ölfilter bzw. Ölsieb (21) angeordnet ist.    Variable camshaft control for internal combustion engines, with
    an adjusting device for adjusting a camshaft, wherein by adjusting the camshaft opening and closing times of valves of the internal combustion engine are adjustable, and the rotational position of the camshaft by a solenoid valve (4) is controllable, having a motor oil inlet (14) connected to the engine oil circuit is connected, characterized in that a the solenoid valve (4) associated with oil filter or oil filter (21) is arranged in front of the engine oil inlet (14).         Variable Nockenwellensteuerung nach Anspruch 1, wobei das Ölfilter bzw. Ölsieb (21) unmittelbar am Motoröleingang (14) des Magnetventils (4) angeordnet ist.Variable camshaft control according to claim 1, wherein the oil filter or Oil strainer (21) arranged directly on the engine oil inlet (14) of the solenoid valve (4) is. Variable Nockenwellensteuerung nach Anspruch 1 oder 2, wobei das Magnetventil (4) ein vom Verbrennungsmotor demontierbares Bauteil ist und das Ölfilter bzw. Ölsieb (21) lösbar am Magnetventil (4) befestigt und zusammen mit dem Magnetventil (4) demontierbar ist. Variable camshaft control according to claim 1 or 2, wherein the Solenoid valve (4) is a disassembled from the engine component and the Oil filter or oil strainer (21) releasably attached to the solenoid valve (4) and together with the solenoid valve (4) is removable. Variable Nockenwellensteuerung nach einem der Ansprüche 1 bis 3, wobei das Magnetventil (4) mindestens einen Steuerölausgang (13, 15) zum Ansteuern der Verstelleinrichtung aufweist.Variable camshaft control according to one of claims 1 to 3, wherein the solenoid valve (4) at least one control oil outlet (13, 15) for driving comprising the adjusting device. Variable Nockenwellensteuerung nach Anspruch 4, wobei das Magnetventil (4) einen zylindrischen Schaftabschnitt (9) aufweist, wobei der Motoröleingang (14) und der mindestens einen Steuerausgang (13) durch eine oder mehrere über den Umfang des Schaftabschnitts (9) verteilt angeordnete radiale Bohrungen (13, 15) gebildet sind, die in das Innere des Schaftabschnitts (9) münden und wobei sich das Ölfilter bzw. Ölsieb (21) im Bereich des Öleingangs (14) manschettenartig um den Schaftabschnitt (9) herum erstreckt.Variable camshaft control according to claim 4, wherein the solenoid valve (4) has a cylindrical shaft portion (9), wherein the engine oil inlet (14) and the at least one control output (13) through one or more of the Circumference of the shaft section (9) distributed radial bores (13, 15) are formed, which open into the interior of the shaft portion (9) and wherein the Oil filter or oil strainer (21) in the region of the oil inlet (14) like a sleeve around the Shaft portion (9) extends around. Variable Nockenwellensteuerung nach Anspruch 5, wobei der Schaftabschnitt (9) im Bereich des Öleingangs (14) eine umlaufende Nut (11) aufweist, in die das Ölfilter bzw. Ölsieb (21) von außen her eingesetzt ist.The variable camshaft controller of claim 5, wherein the Shaft portion (9) in the region of the oil inlet (14) has a circumferential groove (11), in which the oil filter or oil strainer (21) is inserted from the outside. Variable Nockenwellensteuerung nach einem der Ansprüche 1 bis 6, wobei das Ölfilter bzw. Ölsieb (21) ein Filter- bzw. Siebelement (34) aufweist, das durch einen Trägerkörper (22) gehalten ist.Variable camshaft control according to one of claims 1 to 6, wherein the oil filter or oil sieve (21) has a filter or sieve element (34) which passes through a support body (22) is held. Variable Nockenwellensteuerung nach Anspruch 7, wobei der Trägerkörper (22) öffenbar ist und durch zwei halbzylindrische Hälften (22a, 22b) gebildet ist, die an ihren ersten Enden über ein Schwenkgelenk (23) miteinander verbunden sind und die an ihren zweiten Enden (24, 25) öffenbar miteinander verbunden sind.Variable camshaft control according to claim 7, wherein the carrier body (22) is openable and formed by two semi-cylindrical halves (22a, 22b), the at their first ends via a pivot joint (23) are interconnected and which are openably connected to each other at their second ends (24, 25). Variable Nockenwellensteuerung nach Anspruch 8, wobei die zweiten Enden (24, 25) der halbzylindrischen Hälften (22a, 22b) als Clipverschluss ausgebildet sind.The variable cam timing controller of claim 8, wherein the second ends (24, 25) of the semi-cylindrical halves (22a, 22b) formed as a clip closure are. Variable Nockenwellensteuerung nach einem der Ansprüche 1 bis 6, wobei das Ölfilter bzw. Ölsieb (21) durch ein Siebblech (34) gebildet ist, das sich im Bereich des Öleingangs (14) um den Schaftabschnitt (9) herum erstreckt und dessen Endabschnitte (35, 36) miteinander verbunden sind. Variable camshaft control according to one of claims 1 to 6, wherein the oil filter or oil sieve (21) is formed by a screen plate (34) located in the area of the oil inlet (14) extends around the shaft portion (9) and its End portions (35, 36) are interconnected. Variable Nockenwellensteuerung nach Anspruch 11, wobei die Endabschnitte (35, 36) miteinander verschweißt sind.The variable camshaft controller of claim 11, wherein the end portions (35, 36) are welded together. Variable Nockenwellensteuerung nach einem der Ansprüche 10 oder 11, wobei der eine Endabschnitt (36) einen laschenartigen Fortsatz (38) aufweist, der zum Aufreißen der Verbindung (37) der Endabschnitte (35, 36) und zum Entfernen des Ölfilters bzw. Ölsiebs (21) vom Magnetventil (4) vorgesehen ist.Variable camshaft control according to one of claims 10 or 11, wherein the one end portion (36) has a tab-like extension (38) which for tearing open the connection (37) of the end sections (35, 36) and for removal of the oil filter or oil strainer (21) is provided by the solenoid valve (4).
    EP20030013770 2002-07-18 2003-06-18 Spool valve with oil filter for variable camshaft drive Expired - Lifetime EP1382807B1 (en)

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    DE2002132528 DE10232528B4 (en) 2002-07-18 2002-07-18 Solenoid valve with oil filter for variable camshaft control
    DE10232528 2002-07-18

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    FR2857720A1 (en) * 2003-07-16 2005-01-21 Denso Corp VALVE FOR PERMUTATION OF OIL PASSAGES CONTAINING AN OIL FILTER
    WO2008040741A1 (en) * 2006-10-05 2008-04-10 Delphi Technologies, Inc. Fluid control valve
    FR2910529A3 (en) * 2006-12-22 2008-06-27 Renault Sas Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall
    EP1635044A3 (en) * 2004-09-14 2010-08-04 Yamaha Hatsudoki Kabushiki Kaisha Engine
    LU92162B1 (en) * 2012-03-05 2014-09-29 Schaeffler Technologies Ag Filter arrangement of a control valve for a camshaft adjuster
    WO2016122829A1 (en) * 2015-01-30 2016-08-04 Caterpillar Inc. Injector inlet fuel screen
    EP3306055A1 (en) * 2016-10-04 2018-04-11 ECO Holding 1 GmbH Selector valve and connecting rod for a combustion engine with variable compression
    US10302059B2 (en) 2017-01-24 2019-05-28 Caterpillar Inc. Filter for a fuel injector
    US10352202B2 (en) 2016-10-04 2019-07-16 ECO Holding 1 GmbH Switch valve and connecting rod for variable compression internal combustion engine

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    DE102004036096B4 (en) 2004-07-24 2017-09-14 Schaeffler Technologies AG & Co. KG Control valve for a device for changing the timing of an internal combustion engine
    DE102007050447B4 (en) 2007-10-19 2017-01-12 Hilite Germany Gmbh Hydraulic cartridge valve with sieve
    DE102020113906A1 (en) 2020-05-25 2021-11-25 Schaeffler Technologies AG & Co. KG Magnetic actuator for a camshaft adjuster and method for actuating an actuator of a camshaft adjuster

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    Cited By (12)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    FR2857720A1 (en) * 2003-07-16 2005-01-21 Denso Corp VALVE FOR PERMUTATION OF OIL PASSAGES CONTAINING AN OIL FILTER
    US7328773B2 (en) 2003-07-16 2008-02-12 Denso Corporation Oil passage switching valve having oil filter
    EP1635044A3 (en) * 2004-09-14 2010-08-04 Yamaha Hatsudoki Kabushiki Kaisha Engine
    WO2008040741A1 (en) * 2006-10-05 2008-04-10 Delphi Technologies, Inc. Fluid control valve
    FR2910529A3 (en) * 2006-12-22 2008-06-27 Renault Sas Hydraulic system i.e. hydraulic stop, for internal combustion engine of motor vehicle, has oil filter placed around external surface of cylindrical wall constituting body of system, and another filter placed on internal surface of wall
    LU92162B1 (en) * 2012-03-05 2014-09-29 Schaeffler Technologies Ag Filter arrangement of a control valve for a camshaft adjuster
    US8931449B2 (en) 2012-03-05 2015-01-13 Schaeffler Technologies Gmbh & Co. Kg Filter arrangement of a control valve for a camshaft adjuster
    WO2016122829A1 (en) * 2015-01-30 2016-08-04 Caterpillar Inc. Injector inlet fuel screen
    EP3306055A1 (en) * 2016-10-04 2018-04-11 ECO Holding 1 GmbH Selector valve and connecting rod for a combustion engine with variable compression
    EP3456938A1 (en) * 2016-10-04 2019-03-20 ECO Holding 1 GmbH Connecting rod for a combustion engine with variable compression
    US10352202B2 (en) 2016-10-04 2019-07-16 ECO Holding 1 GmbH Switch valve and connecting rod for variable compression internal combustion engine
    US10302059B2 (en) 2017-01-24 2019-05-28 Caterpillar Inc. Filter for a fuel injector

    Also Published As

    Publication number Publication date
    DE10232528A1 (en) 2004-02-19
    DE10232528B4 (en) 2004-07-22
    EP1382807B1 (en) 2011-03-16
    EP1382807A3 (en) 2007-12-26
    DE50313539D1 (en) 2011-04-28

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