EP1485579A1 - Nockenwellenversteller - Google Patents
NockenwellenverstellerInfo
- Publication number
- EP1485579A1 EP1485579A1 EP03702645A EP03702645A EP1485579A1 EP 1485579 A1 EP1485579 A1 EP 1485579A1 EP 03702645 A EP03702645 A EP 03702645A EP 03702645 A EP03702645 A EP 03702645A EP 1485579 A1 EP1485579 A1 EP 1485579A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- electromagnet
- control
- control piston
- camshaft
- 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
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000004044 response Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 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
- 230000004907 flux Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
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
- F01L1/34—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
-
- 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
- F01L1/3442—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
- F01L2001/3443—Solenoid driven oil control valves
Definitions
- the invention relates to a camshaft adjuster according to the preamble of claim 1.
- a generic camshaft adjuster for an internal combustion engine which is fastened at one end of a camshaft by means of a central clamping screw.
- the camshaft adjuster has an outer part which is driven by a sprocket and in turn drives an inner part which is non-rotatably connected to the camshaft.
- the angular position of the outer part relative to the inner part can be adjusted hydraulically.
- an electromagnetically actuated control valve the control piston is guided axially displaceably in a control cylinder.
- the control cylinder is integrated in the central clamping screw.
- the control piston protrudes with a pin out of the control cylinder.
- a magnet armature of an electromagnet On the free end of the pin sits a magnet armature of an electromagnet whose magnet housing is screwed together with a magnetic flange to a control housing cover of an internal combustion engine.
- the magnet housing In the magnet housing there is a magnetic coil, in the central coil space of the rotating with the camshaft magnet armature is guided axially displaceable.
- the electromagnet For trouble-free operation of the camshaft adjuster, the electromagnet must be aligned radially with the magnet armature. This requires in the electromagnet assembly an alignment of the electromagnet to the control piston of the central clamping screw with the aid of a centering tool. This results in an increased production costs on the electromagnet and the spool. Furthermore, problems arise in the automated electromagnet assembly.
- a camshaft adjuster in which the central clamping screw is integrally formed on the camshaft. On a threaded part at the end of the clamping screw, a nut is screwed, with the camshaft adjuster is held on the camshaft.
- the molded clamping screw in which a control cylinder of a 4/2-way valve is integrated, can be machined together with the camshaft, so that manufacturing tolerances between the camshaft, the clamping screw and the control cylinder can be easily complied with.
- the production is complex because the camshaft with the integrally formed clamping screw is a complex component and the gap between the control cylinder and the control piston with respect to the efficiency of the electromagnet should be as small as possible. Furthermore, it is assumed that the camshaft has a perfect concentricity and the magnet armature and the electromagnet are exactly centered.
- the object of the invention is to improve the solenoid assembly and the response of the control valve and thus also the function of the camshaft adjuster with simple means.
- the object is achieved by the features of claim 1.
- Advantageous embodiments and modifications of the invention will become apparent from the dependent claims.
- the armature is firmly seated on an armature plunger, which rests loosely with a free end face on the control piston or a part fixedly connected thereto.
- the function of the electromagnet can be checked independently of the 4/2-way valve, eg before assembly.
- the design according to the invention ensures that no constraining forces occur between the magnet armature and the control piston as a result of production or assembly errors, so that minimal frictional losses occur in all operating ranges, even at extremely different temperatures.
- the gap between the control cylinder and the control piston does not affect the luff gap between the magnet armature and the magnet coil, so that small air gaps can be realized with a low production cost.
- At least one of the contact surfaces between the armature tappet on the one hand and the control piston or the pin on the other hand is convex. At the same time the contact surfaces are thereby reduced, so that a torque transmission by slip is hardly possible.
- the electromagnet is designed as a proportional magnet with a Polkem, which is provided in particular for guiding the magnetic flux and through which the armature plunger is guided.
- the solenoid of the electromagnet When the solenoid of the electromagnet is energized, the armature plunger engages the pin of the control piston and shifts it according to the current against the force of the compression spring, which acts on the control piston from the opposite side.
- the magnet armature and the armature tappet can expediently be guided axially displaceably in the inner coil space of the magnet coil and / or in the cup-shaped part of the magnet flange.
- the solenoid can be controlled so that the control piston assumes no intermediate positions, but in the energized state of the electromagnet occupies the one end position and is displaced in the de-energized state by the compression spring in the other end position. In order to obtain a sufficient degree of freedom for the axial orientation of the electromagnet, this has a larger working stroke compared to the working stroke of the control piston.
- FIGURE of the drawing shows a schematically held partial longitudinal section through a camshaft adjuster according to the invention.
- a camshaft 11 is rotatably mounted in a housing wall 12 of an internal combustion engine, not shown. At its end a camshaft adjuster 10 is fixed by means of a central clamping screw 16 which is screwed into the camshaft 11.
- the camshaft adjuster 10 has an inner part 13 and an outer part 14, wherein the inner part 13 is rotatably connected to the camshaft 11, while the outer part 14 for driving a sprocket 15 has.
- the inner part 13 can be hydraulically adjusted by a rotation angle relative to the outer part 14.
- a hydraulic adjusting mechanism which is not shown in detail, can be carried out in the manner described in DE 19654926 C2 or DE 198 17319 A1.
- the hydraulic pressure medium is supplied to the hydraulic actuating mechanism via a 4/2-way control valve, the control piston 18 is arranged axially displaceable in a control cylinder 17 integrated in the clamping screw 16.
- This has control bores 22, 23, which are controlled by the control piston 18, and over which the pressure medium is directed to and from the hydraulic actuating mechanism.
- To control the control piston 18 has control grooves 19, 20 and 21, via which the control bores 22, 23 are connected depending on the position of the control piston 18 with pressure lines or venting channels not shown.
- the end positions of the control piston 18 are limited by axial stops 26 in the control cylinder 17.
- the control piston 18 is loaded on the camshaft 11 facing the end by a compression spring 24, which presses him with a given bias against an end stop 26 in the control cylinder 17.
- a compression spring 24 which presses him with a given bias against an end stop 26 in the control cylinder 17.
- a pin 25 which is integrally formed on the control piston 18 and protrudes from the control cylinder 17 a piece.
- An oppressive proportional solenoid, a so-called pressure magnet 28 actuates the control piston 18. It has an armature plunger 34, on which a magnet armature 33 is fastened and guided in a coil space 37 of a magnet coil 31 in an axially displaceable manner.
- the magnet armature 33 moves in the magnetic field of the magnet coil 31 toward a cup-shaped pole core 36 of a magnetic flange 30.
- the armature plunger 34 sets end to the pin 25 of the control piston 18 and adjusts this according to the energization of the solenoid 31 against the force of the compression spring 24 to a maximum of an end stop 35th
- At least one of the contact surfaces between the armature plunger 34 and the pin 25 is convex, so that no tilting moments arise at the contact point at an angular deviation between the longitudinal axis of the armature plunger 34 and the control piston 18 at the contact point and transmit rotational movements become.
- the loose connection between the armature plunger 34 and the pin 25, the friction between the control piston 18 and the control cylinder 17 and between the armature 33 and the armature plunger 34 and the associated guides is minimized, so that the response of the control valve is optimal and at low Temperatures allows an adjustment of the camshaft 11.
- the magnet housing 29 and the magnetic flange 30 are screwed to a control housing cover 27 and sealed by means of a surface sealant.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10211467A DE10211467A1 (de) | 2002-03-15 | 2002-03-15 | Nockenwellerversteller |
| DE10211467 | 2002-03-15 | ||
| PCT/EP2003/001527 WO2003078803A1 (de) | 2002-03-15 | 2003-02-15 | Nockenwellenversteller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1485579A1 true EP1485579A1 (de) | 2004-12-15 |
| EP1485579B1 EP1485579B1 (de) | 2009-09-16 |
Family
ID=27771340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03702645A Expired - Lifetime EP1485579B1 (de) | 2002-03-15 | 2003-02-15 | Nockenwellenversteller |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7011059B2 (de) |
| EP (1) | EP1485579B1 (de) |
| JP (1) | JP2005530077A (de) |
| DE (2) | DE10211467A1 (de) |
| WO (1) | WO2003078803A1 (de) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE502005010369D1 (de) * | 2004-05-14 | 2010-11-25 | Schaeffler Kg | Nockenwellenversteller |
| JP4276600B2 (ja) * | 2004-09-14 | 2009-06-10 | ヤマハ発動機株式会社 | エンジン |
| DE102005048732B4 (de) * | 2005-10-12 | 2024-07-25 | Schaeffler Technologies AG & Co. KG | Elektromagnetische Stelleinheit eines hydraulischen Wegeventils |
| EP1930702A1 (de) * | 2006-12-07 | 2008-06-11 | Mettler-Toledo AG | Dosiervorrichtung für pulver- oder pastenförmiges Dosiergut |
| DE102007019923A1 (de) | 2007-04-27 | 2008-10-30 | Schaeffler Kg | Nockenwellenverstellsystem |
| DE102007020525A1 (de) * | 2007-05-02 | 2008-11-06 | Schaeffler Kg | Nockenwellenversteller für eine Brennkraftmaschine mit integriertem Ventilschieber |
| DE102007054652A1 (de) | 2007-11-16 | 2009-05-20 | Schaeffler Kg | Elektromagnetische Stelleinheit eines Magnetventils und Verfahren zur Herstellung einer solchen Stelleinheit |
| DE102008008118B4 (de) | 2008-02-08 | 2026-01-15 | Schaeffler Technologies AG & Co. KG | Elektromagnetische Stelleinheit für ein hydraulisches Wegeventil |
| DE102008010649A1 (de) | 2008-02-22 | 2009-08-27 | Schaeffler Kg | Elektromagnetische Stelleinheit für ein hydraulisches Wegeventil |
| DE102008010648A1 (de) | 2008-02-22 | 2009-08-27 | Schaeffler Kg | Elektromagnetische Stelleinheit für ein hydraulisches Wegeventil |
| DE102008010646A1 (de) | 2008-02-22 | 2009-08-27 | Schaeffler Kg | Elektromagnetische Stelleinheit für ein hydraulisches Wegeventil |
| DE102008059012A1 (de) | 2008-11-26 | 2010-05-27 | Schaeffler Kg | Elektromagnetische Stelleinheit für ein hydraulisches Wegeventil und Verfahren zu dessen Montage |
| DE102009006355A1 (de) | 2009-01-28 | 2010-07-29 | Schaeffler Technologies Gmbh & Co. Kg | Proportionalmagnet für ein hydraulisches Wegeventil und Verfahren zu dessen Herstellung |
| DE102009022869A1 (de) * | 2009-05-27 | 2010-12-09 | Hydraulik-Ring Gmbh | Flügelzellennockenwellenverstellersystem |
| DE102010012917B4 (de) | 2009-10-05 | 2021-12-09 | Schaeffler Technologies AG & Co. KG | Nockenwellenverstellvorrichtung mit einem Aktuator, der über ein Befestigungsmittel an einem Gehäuseelement befestigt ist |
| DE102010008931A1 (de) | 2010-02-23 | 2011-08-25 | Schaeffler Technologies GmbH & Co. KG, 91074 | Nockenwellenverstellvorrichtung |
| JP2011196245A (ja) * | 2010-03-19 | 2011-10-06 | Denso Corp | バルブタイミング調整装置 |
| DE102010045358A1 (de) | 2010-04-10 | 2011-10-13 | Hydraulik-Ring Gmbh | Schwenkmotornockenwellenversteller mit einem Hydraulikventil |
| DE102010019005B4 (de) | 2010-05-03 | 2017-03-23 | Hilite Germany Gmbh | Schwenkmotorversteller |
| JP5182326B2 (ja) | 2010-06-09 | 2013-04-17 | トヨタ自動車株式会社 | 流量制御弁 |
| DE102010060180B4 (de) | 2010-10-26 | 2017-06-29 | Hilite Germany Gmbh | Zentralventil |
| DE102010060181B4 (de) | 2010-10-26 | 2014-08-21 | Hilite Germany Gmbh | Zentralventil |
| DE102010061337B4 (de) | 2010-12-20 | 2015-07-09 | Hilite Germany Gmbh | Hydraulikventil für einen Schwenkmotorversteller |
| DE102010061521A1 (de) | 2010-12-23 | 2012-06-28 | Hydraulik-Ring Gmbh | Schwenkmotorversteller mit einem Zentralventil |
| CN102367751B (zh) * | 2011-09-20 | 2013-07-24 | 宁波诺依克电子有限公司 | Vvt发动机控制阀及其控制方法 |
| DE102012218406B4 (de) | 2012-10-10 | 2014-08-21 | Schaeffler Technologies Gmbh & Co. Kg | Zentralventil für einen Nockenwellenversteller |
| DE102013114625A1 (de) | 2013-12-20 | 2015-06-25 | Eto Magnetic Gmbh | Nockenwellenverstellvorrichtung, Verbrennungsmotor sowie Montageverfahren |
| DE102016221990A1 (de) | 2015-11-17 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Elektromagnet für eine Nockenwellenverstellvorrichtung |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4237193A1 (de) * | 1992-11-04 | 1994-05-05 | Bosch Gmbh Robert | Verfahren zur Ansteuerung einer Einrichtung zum relativen Verdrehen einer Welle und Einrichtung zum relativen Verdrehen der Welle einer Brennkraftmaschine |
| DE19654926C2 (de) | 1996-03-22 | 1999-10-14 | Daimler Chrysler Ag | Vorrichtung zur relativen Winkelverstellung einer Nockenwelle |
| DE19611365C2 (de) | 1996-03-22 | 1999-09-23 | Daimler Chrysler Ag | Vorrichtung zur relativen Winkelverstellung einer Nockenwelle |
| DE19817319C2 (de) | 1998-04-18 | 2001-12-06 | Daimler Chrysler Ag | Nockenwellenversteller für Brennkraftmaschinen |
| JP4013364B2 (ja) * | 1998-10-30 | 2007-11-28 | アイシン精機株式会社 | 弁開閉時期制御装置 |
| DE19955507C2 (de) | 1999-11-18 | 2003-04-24 | Daimler Chrysler Ag | Nockenwellensteller für Brennkraftmaschinen |
-
2002
- 2002-03-15 DE DE10211467A patent/DE10211467A1/de not_active Withdrawn
-
2003
- 2003-02-15 DE DE50311918T patent/DE50311918D1/de not_active Expired - Lifetime
- 2003-02-15 JP JP2003576782A patent/JP2005530077A/ja active Pending
- 2003-02-15 WO PCT/EP2003/001527 patent/WO2003078803A1/de not_active Ceased
- 2003-02-15 EP EP03702645A patent/EP1485579B1/de not_active Expired - Lifetime
-
2004
- 2004-09-14 US US10/940,937 patent/US7011059B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03078803A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50311918D1 (de) | 2009-10-29 |
| DE10211467A1 (de) | 2003-09-25 |
| EP1485579B1 (de) | 2009-09-16 |
| US7011059B2 (en) | 2006-03-14 |
| US20050056245A1 (en) | 2005-03-17 |
| WO2003078803A1 (de) | 2003-09-25 |
| JP2005530077A (ja) | 2005-10-06 |
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