EP1286024A2 - Location of a cam shaft in the cylinder head of an internal combustion engine - Google Patents
Location of a cam shaft in the cylinder head of an internal combustion engine Download PDFInfo
- Publication number
- EP1286024A2 EP1286024A2 EP02015997A EP02015997A EP1286024A2 EP 1286024 A2 EP1286024 A2 EP 1286024A2 EP 02015997 A EP02015997 A EP 02015997A EP 02015997 A EP02015997 A EP 02015997A EP 1286024 A2 EP1286024 A2 EP 1286024A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft collar
- housing
- bearing
- cylinder head
- 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
-
- 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
- F01L1/34403—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft
- F01L1/34406—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft the helically teethed sleeve being located in the camshaft driving pulley
Definitions
- the invention relates according to the preamble of claim 1 to a Arrangement of a camshaft in the cylinder head of an internal combustion engine, in which the arranged in the cylinder head via a plain bearing combined with a thrust bearing Camshaft is equipped with a hydraulically controlled phaser, the a hydraulic medium from arranged in the cylinder head channels over a circumferential with a cylinder head side housing cooperating shaft collar and further channels in the camshaft is supplied, wherein the first channels with the second channels arranged in the shaft collar, covered by the housing and outwardly sealed circumferential grooves are in communication.
- Such an arrangement of a camshaft is known for example from FIGS and 4 of the German patent DE 195 25 836 C1.
- This known arrangement of a separate Wellenbundes next to a separate combined sliding / thrust bearing disadvantageously requires an additional length of the camshaft.
- the invention is based on the object, the generic arrangement of a To improve camshaft so that a camshaft with a shorter overall length achieved.
- camshafts 1, 1 ' which are each shown in half in FIGS. 1 and 2, differ from each other by phaser side differently shaped ends, what in relation to the inventive arrangement of a camshaft 1, 1 'in Cylinder head 2 of an internal combustion engine not shown in detail but without meaning is.
- a camshaft 1, 1 'in Cylinder head 2 of an internal combustion engine not shown in detail but without meaning is.
- the cylinder head 2 via a combined with a thrust bearing 3
- Slide bearing 4 arranged camshaft 1, 1 'with a hydraulically controlled Phasing plate 5 equipped.
- This phaser 5 is a hydraulic medium from arranged in the cylinder head 2 channels 6 and 7 over a circumferentially with a cylinder head side housing 8 cooperating shaft collar 9 and further channels 10 and 11 in the camshaft 1, 1 'supplied, wherein the first Channels 6, 7 with the second channels 10, 11 arranged in the shaft collar 9, Covered from the housing 8 and sealed to the outside circumferential grooves 12, 12 'in Connection stand.
- Camshaft is inventively proposed that divided in one trained housing 8 arranged shaft collar 9 an integrated arranged Slide bearing 4 with thrust bearing 3 comprises trained with both sides of the sliding bearing 4 axial thrust bearing abutment surfaces 13, 13 'in relation to the slide bearing diameter larger recesses 14, 14 'in the housing 8. In these recesses 14, 14 'engages the camshaft 1, 1' with diameter-adapted Weilbund sections 9 ', 9 "with circumferential or radial clearance such that in the shaft collar sections 9 ', 9 "arranged circumferential grooves 12, 12' only to the respective outer end side 15, 15 'of the housing 8 out in the recesses 14, 14' sealed are.
- a particularly effective and reliable sealing of the circumferential grooves 12, 12 'in the shaft collar sections 9', 9 "against the recesses 14, 14 'in the housing 8 is achieved by means arranged in annular grooves 17 hook rings 18, which in FIG 3 are shown in enlarged detail with cooperating at 19 Hook.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung bezieht sich nach dem Oberbegriff des Patentanspruches 1 auf eine
Anordnung einer Nockenwelle im Zylinderkopf einer Brennkraftmaschine, bei der die
im Zylinderkopf über ein mit einem Spurlager kombiniertes Gleitlager angeordnete
Nockenwelle mit einem hydraulisch gesteuerten Phasensteller ausgerüstet ist, dem
ein Hydraulikmedium aus im Zylinderkopf angeordneten Kanälen über einen umfänglich
mit einem zylinderkopfseitigen Gehäuse zusammenwirkenden Wellenbund
und weiteren Kanälen in der Nockenwelle zugeführt ist, wobei die ersten Kanäle mit
den zweiten Kanälen über im Wellenbund angeordnete, vom Gehäuse abgedeckte
und nach außen abgedichtete Umfangsnuten in Verbindung stehen.The invention relates according to the preamble of
Eine derartige Anordnung einer Nockenwelle ist beispielsweise aus den Figuren 1 und 4 der deutschen Patentschrift DE 195 25 836 C1 bekannt. Hierbei umfasst die Nockenwelle neben dem kombinierten Gleit-/Spurlager einen gesonderten Wellenbund mit Einrichtungen zum Verteilen des Hydraulikmediums entsprechend einer gewünschten Steuerung des Phasenstellers. Diese bekannte Anordnung eines gesonderten Wellenbundes neben einem gesonderten kombinierten Gleit-/Spurlager erfordert in nachteiliger Weise eine zusätzliche Baulänge der Nockenwelle.Such an arrangement of a camshaft is known for example from FIGS and 4 of the German patent DE 195 25 836 C1. This includes the Camshaft next to the combined sliding / thrust bearing a separate shaft collar with means for distributing the hydraulic medium according to a desired control of the phaser. This known arrangement of a separate Wellenbundes next to a separate combined sliding / thrust bearing disadvantageously requires an additional length of the camshaft.
Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Anordnung einer Nockenwelle derart zu verbessern, dass eine Nockenwelle mit kürzerer Baulänge erzielt ist. The invention is based on the object, the generic arrangement of a To improve camshaft so that a camshaft with a shorter overall length achieved.
Diese Aufgabe ist mit dem Patentanspruch 1 dadurch gelöst, dass der in einem geteilt
ausgebildeten Gehäuse angeordnete Wellenbund ein integriert angeordnetes
Gleitlager mit Spurlager umfasst mit beiderseits des Gleitlagers ausgebildeten
axialen Spurlager-Anschlagflächen in gegenüber dem Gleitlager-Durchmesser
größeren Ausnehmungen im Gehäuse, in die die Nockenwelle mit im Durchmesser
angepassten Wellenbund-Abschnitten mit Umfangs- bzw. Radialspiel derart eingreift,
dass die in den Wellenbund-Abschnitten angeordneten Umfangsnuten lediglich
zur jeweiligen äußeren Stirnseite des Gehäuses hin in den Ausnehmungen abgedichtet
sind.This object is achieved with the
Mit der erfindungsgemäßen Integration des kombinierten Gleit-/Spurlagers im Wellenbund ist in vorteilhafter Weise eine verkürzte Baulänge der Nockenwelle erzielt, wobei als weiterer Vorteil der Fortfall der gegenseitigen Abdichtung der Umfangsnuten zu nennen ist.With the integration of the combined sliding / track bearing according to the invention in the shaft collar is achieved advantageously a shortened length of the camshaft, as a further advantage of the elimination of the mutual sealing of the circumferential grooves to call.
Gemäß einer vorteilhaften Weiterbildung der Erfindung stehen ein im Gleitlager austretender Schmierkanal und die ersten und zweiten Hydraulikkanäle für den Phasensteller mit dem Schmiersystem der Brennkraftmaschine in Verbindung, wobei die Wellenbund-Abschnitte relativ zur Breite des Gleitlagers zwischen den Spurlager-Anschlagflächen mit Axialspiel beabstandet angeordnet sind.According to an advantageous embodiment of the invention are in a plain bearing leaking lubrication channel and the first and second hydraulic channels for the Phase adjuster with the lubrication system of the internal combustion engine in conjunction, wherein the shaft collar sections relative to the width of the sliding bearing between the Spur bearing abutment surfaces are spaced apart with axial play.
Mit dieser Ausgestaltung kann bei einem Ausfall des Schmierkanals für das Gleitlager dieses über das dem Schmiersystem der Brennkraftmaschine entnommene Steueröl für den Phasensteller zumindest notlaufmäßig versorgt werden.With this configuration, in case of failure of the lubrication channel for the sliding bearing this removed via the lubricating system of the internal combustion engine Control oil for the phaser are at least emergency supplied.
Gemäß einem weiteren Vorschlag ist die Abdichtung der Umfangsnuten in den Wellenbund-Abschnitten gegen die Ausnehmungen im Gehäuse mittels in Ringnuten angeordneten Hakenringen bewirkt.According to another proposal, the sealing of the circumferential grooves in the Shaft sections against the recesses in the housing by means of annular grooves arranged hook rings causes.
Diese nach Art von Kolbenringen eine radiale Spannkraft aufweisenden Hakenringe ergeben durch die labyrinthartige Verhakung eine hohe Dichtwirkung, so dass bei ggf. gesondert geförderten Steueröl für den Phasensteller die Schmierung des Gleitlagers über das Spurlager-Axialspiel sichergestellt ist. This according to the type of piston rings a radial clamping force having hook rings result from the labyrinthine entanglement a high sealing effect, so that at if necessary separately promoted control oil for the phaser the lubrication of Slide bearing is ensured via the thrust bearing end play.
Die Erfindung ist anhand eines in der Zeichnung dargestellten Ausführungsbeispiels beschrieben. Es zeigt
Figur 1- die Anordnung einer Nockenwelle mit kurzem stirnseitigem Ende,
- Figur 2
- die Anordnung einer Nockenwelle mit einem langen, stirnseitigen Überstand,
- Figur 3
- in einem vergrößerten Ausschnitt die ineinander greifenden Haken eines Hakenringes.
- FIG. 1
- the arrangement of a camshaft with a short frontal end,
- FIG. 2
- the arrangement of a camshaft with a long, front projection,
- FIG. 3
- in an enlarged section, the interlocking hooks of a hook ring.
Die in den Figuren 1 und 2 jeweils hälftig dargestellten Nockenwellen 1, 1' unterscheiden
sich voneinander durch phasenstellerseitig unterschiedlich gestaltete Enden,
was in Bezug auf die erfindungsgemäße Anordnung einer Nockenwelle 1, 1' im
Zylinderkopf 2 einer nicht näher gezeigten Brennkraftmaschine jedoch ohne Bedeutung
ist. Hierbei ist die im Zylinderkopf 2 über ein mit einem Spurlager 3 kombiniertes
Gleitlager 4 angeordnete Nockenwelle 1, 1' mit einem hydraulisch gesteuerten
Phasensteller 5 ausgerüstet. Diesem Phasensteller 5 ist ein Hydraulikmedium
aus im Zylinderkopf 2 angeordneten Kanälen 6 und 7 über einen umfänglich mit
einem zylinderkopfseitigen Gehäuse 8 zusammenwirkenden Wellenbund 9 und
weiteren Kanälen 10 und 11 in der Nockenwelle 1, 1' zugeführt, wobei die ersten
Kanäle 6, 7 mit den zweiten Kanälen 10, 11 über im Wellenbund 9 angeordnete,
vom Gehäuse 8 abgedeckte und nach außen abgedichtete Umfangsnuten 12, 12' in
Verbindung stehen.The
Zur Erzielung einer gegenüber dem aufgezeigten Stand der Technik kürzer bauenden
Nockenwelle wird erfindungsgemäß vorgeschlagen, dass der in einem geteilt
ausgebildeten Gehäuse 8 angeordnete Wellenbund 9 ein integriert angeordnetes
Gleitlager 4 mit Spurlager 3 umfasst mit beiderseits des Gleitlagers 4 ausgebildeten
axialen Spurlager-Anschlagflächen 13, 13' in gegenüber dem Gleitlager-Durchmesser
größeren Ausnehmungen 14, 14' im Gehäuse 8. In diese Ausnehmungen
14, 14' greift die Nockenwelle 1, 1' mit im Durchmesser angepassten Weilenbund-Abschnitten
9', 9" mit Umfangs- bzw. Radialspiel derart ein, dass die in den Wellenbund-Abschnitten
9', 9" angeordneten Umfangsnuten 12, 12' lediglich zur jeweiligen
äußeren Stirnseite 15, 15' des Gehäuses 8 hin in den Ausnehmungen 14, 14' abgedichtet
sind.To achieve a shorter compared to the cited prior art building
Camshaft is inventively proposed that divided in one
trained
Weiter stehen ein im Gleitlager 4 austretender Schmierkanal 16 und die ersten und
zweiten Hydraulikkanäle 6, 7 und 10, 11 für den Phasensteller 5 mit dem Schmiersystem
der Brennkraftmaschine in Verbindung, wobei die Wellenbund-Abschnitte 9',
9" relativ zur Breite des Gleitlagers 4 zwischen den Spurlager-Anschlagflächen 13,
13' mit Axialspiel beabstandet angeordnet sind. Damit kann in sehr kleinem Umfang
Steueröl aus den Umfangsnuten 12, 12' bei ungenügender Schmierung des Gleitlagers
4 in dieses übertreten zur Erzielung einer gewissen Notlaufeigenschaft.Next are a leaking in the sliding bearing 4 lubrication channel 16 and the first and
second
Eine besonders wirksame und betriebssichere Abdichtung der Umfangsnuten 12,
12' in den Wellenbund-Abschnitten 9', 9" gegen die Ausnehmungen 14, 14' im Gehäuse
8 ist mittels in Ringnuten 17 angeordneten Hakenringen 18 erzielt, die in Figur
3 ausschnittsweise vergrößert dargestellt sind mit bei 19 zusammenwirkenden
Haken.A particularly effective and reliable sealing of the
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10141213 | 2001-08-23 | ||
DE2001141213 DE10141213B4 (en) | 2001-08-23 | 2001-08-23 | Arrangement of a camshaft in the cylinder head of an internal combustion engine |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1286024A2 true EP1286024A2 (en) | 2003-02-26 |
EP1286024A3 EP1286024A3 (en) | 2003-11-19 |
EP1286024B1 EP1286024B1 (en) | 2008-02-27 |
Family
ID=7696286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020015997 Expired - Lifetime EP1286024B1 (en) | 2001-08-23 | 2002-07-18 | Location of a cam shaft in the cylinder head of an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1286024B1 (en) |
DE (2) | DE10141213B4 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008028902A1 (en) * | 2006-09-07 | 2008-03-13 | Mahle International Gmbh | Adjustable camshaft |
CN103080484A (en) * | 2010-09-03 | 2013-05-01 | 株式会社捷太格特 | Camshaft device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108915814B (en) * | 2018-08-28 | 2023-10-20 | 河南柴油机重工有限责任公司 | Cam shaft driving device of common rail diesel engine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19525836C1 (en) | 1995-07-15 | 1996-08-01 | Bayerische Motoren Werke Ag | Positioning device for relative angular adjustment of camshaft of IC engine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2924777B2 (en) * | 1996-04-08 | 1999-07-26 | トヨタ自動車株式会社 | Variable valve timing mechanism for internal combustion engine |
DE19616266A1 (en) * | 1996-04-24 | 1997-10-30 | Schaeffler Waelzlager Kg | Compact unit adjusting relative angular positions of cam-and crank shaft |
EP0818640B1 (en) * | 1996-07-11 | 2001-01-03 | Carraro S.P.A. | A phase variator |
DE19724989A1 (en) * | 1997-06-13 | 1998-12-17 | Schaeffler Waelzlager Ohg | Control time adjusting device for internal combustion engine |
DE19747244A1 (en) * | 1997-10-27 | 1999-04-29 | Schaeffler Waelzlager Kg | Cylinder head for internal combustion engine |
DE19951391A1 (en) * | 1999-10-26 | 2001-07-05 | Schaeffler Waelzlager Ohg | Device for changing the control times of gas exchange valves of an internal combustion engine, in particular hydraulic camshaft adjusting device in the direction of rotation |
-
2001
- 2001-08-23 DE DE2001141213 patent/DE10141213B4/en not_active Expired - Fee Related
-
2002
- 2002-07-18 EP EP20020015997 patent/EP1286024B1/en not_active Expired - Lifetime
- 2002-07-18 DE DE50211771T patent/DE50211771D1/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19525836C1 (en) | 1995-07-15 | 1996-08-01 | Bayerische Motoren Werke Ag | Positioning device for relative angular adjustment of camshaft of IC engine |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008028902A1 (en) * | 2006-09-07 | 2008-03-13 | Mahle International Gmbh | Adjustable camshaft |
CN103080484A (en) * | 2010-09-03 | 2013-05-01 | 株式会社捷太格特 | Camshaft device |
EP2613029A1 (en) * | 2010-09-03 | 2013-07-10 | JTEKT Corporation | Camshaft device |
EP2613029A4 (en) * | 2010-09-03 | 2015-01-07 | Jtekt Corp | Camshaft device |
US8991359B2 (en) | 2010-09-03 | 2015-03-31 | Jtekt Corporation | Camshaft device |
CN103080484B (en) * | 2010-09-03 | 2015-12-02 | 株式会社捷太格特 | Camshaft device |
Also Published As
Publication number | Publication date |
---|---|
EP1286024B1 (en) | 2008-02-27 |
DE10141213B4 (en) | 2008-11-20 |
DE50211771D1 (en) | 2008-04-10 |
EP1286024A3 (en) | 2003-11-19 |
DE10141213A1 (en) | 2003-03-06 |
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