DE102008001802A1 - Cam shaft rotation angle position changing device, has pressure reservoir e.g. spring-tensioned piston reservoir, which is flow connected with oil supply line downstream to check valve and upstream to control valve by connecting pipe - Google Patents
Cam shaft rotation angle position changing device, has pressure reservoir e.g. spring-tensioned piston reservoir, which is flow connected with oil supply line downstream to check valve and upstream to control valve by connecting pipe Download PDFInfo
- Publication number
- DE102008001802A1 DE102008001802A1 DE200810001802 DE102008001802A DE102008001802A1 DE 102008001802 A1 DE102008001802 A1 DE 102008001802A1 DE 200810001802 DE200810001802 DE 200810001802 DE 102008001802 A DE102008001802 A DE 102008001802A DE 102008001802 A1 DE102008001802 A1 DE 102008001802A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- oil supply
- accumulator
- supply line
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000011144 upstream manufacturing Methods 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 5
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000005086 pumping 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
- 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
- F01L2001/34446—Fluid accumulators for the feeding circuit
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Stand der TechnikState of the art
Die Erfindung geht aus von einer Vorrichtung zum Verändern der Drehwinkellage einer Nockenwelle nach der Gattung des Hauptanspruchs.The The invention is based on a device for changing the angular position of a camshaft according to the preamble of the main claim.
Es
ist schon eine Vorrichtung zum Verändern der Drehwinkellage
einer Nockenwelle aus der
Vorteile der ErfindungAdvantages of the invention
Die erfindungsgemäße Vorrichtung mit den kennzeichnenden Merkmalen des Hauptanspruchs hat demgegenüber den Vorteil, dass in der den Phasensteller aufweisenden ersten Ölversorgungsleitung ein höherer Druck einstellbar ist als in der zweiten Ölversorgungsleitung, so dass der Druck in der zweiten Ölversorgungsleitung abgesehen von der kurzen Aufladephase unverändert bleiben kann und für den Phasensteller in der ersten Ölversorgungsleitung ein höherer Druck zur Verfügung steht. Erfindungsgemäß wird dies erreicht, indem ein in der ersten Ölversorgungsleitung angeordnetes Rückschlagventil und ein Druckspeicher vorgesehen ist, wobei der Druckspeicher über eine Verbindungsleitung mit der ersten Ölversorgungsleitung stromab des Rückschlagventils und stromauf des Steuerventils strömungsverbunden ist. Durch den Druckspeicher wird die erste Ölversorgungsleitung zwischen dem Rückschlagventil und dem Steuerventil auf einen höheren Druck angehoben, so dass der Phasensteller durch den höheren Druck schneller verstellbar ist.The inventive device with the characterizing Features of the main claim has the advantage over in that the first oil supply line having the phaser a higher pressure is adjustable than in the second oil supply line, so that the pressure in the second oil supply line aside from the short charging phase can remain unchanged and for the phaser in the first oil supply line higher pressure is available. According to the invention accomplish this by putting one in the first oil supply line arranged check valve and a pressure accumulator provided is, the pressure accumulator via a connecting line with the first oil supply line downstream of the check valve and is fluidly connected upstream of the control valve. Through the accumulator is the first oil supply line between the check valve and the control valve raised a higher pressure so that the phaser is faster adjustable by the higher pressure.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Hauptanspruch angegebenen Vorrichtung möglich.By the measures listed in the dependent claims are advantageous developments and improvements in the main claim specified device possible.
Gemäß einer vorteilhaften Ausführung ist der Druckspeicher als Blasenspeicher oder als federbelasteter Kolbenspeicher ausgeführt. Bei beiden Ausführungen wird das darin enthaltene Öl durch elastische Federkräfte unter Druck gesetzt.According to one advantageous embodiment of the pressure accumulator is a bladder accumulator or designed as a spring-loaded piston accumulator. at both versions will contain the oil contained therein pressurized by elastic spring forces.
Besonders vorteilhaft ist, wenn der Druckspeicher mittels des Förderaggregates durch vorübergehendes Erzeugen eines höheren Drucks aufgeladen wird. Auf diese Weise wird die zweite Ölversorgungsleitung nur in den kurzzeitigen Aufladephasen mit dem höheren Druck beaufschlagt.Especially is advantageous if the pressure accumulator by means of the delivery unit by temporarily generating a higher pressure is charged. In this way, the second oil supply line only in the short-term charging phases with the higher pressure applied.
Weiterhin vorteilhaft ist, wenn ein Steuergerät vorgesehen ist, das den vom Förderaggregat erzeugten Druck abhängig von einem zwischen dem Rückschlagventil und dem Steuerventil herrschenden Druck zum Aufladen des Druckspeichers vorübergehend erhöht. Auf diese Weise können vorzugweise Schubphasen des Motors genutzt werden, um den Druck zu erhöhen und den Speicher zu laden. Diese Vorgehensweise spart Brennstoff. Für den seltenen Fall, dass der Speicher nach einer Aufladung so intensiv genutzt wurde, dass er entladen ist, muss der Systemdruck aus Komfort- und Sicherheitsgründen im normalen Fahrbetrieb bedarfsgerecht kurzeitig angehoben werden, wenn eine schnelle Vertellung des Phasenstellers erforderlich ist.Farther is advantageous if a control device is provided, the dependent on the pressure generated by the delivery unit from one between the check valve and the control valve prevailing pressure to charge the accumulator temporarily elevated. In this way, preferably shear phases the engine can be used to increase the pressure and to load the memory. This procedure saves fuel. For the rare case that the store after charging so intense has been used, that the system pressure has to be exhausted and safety reasons in normal driving operation as needed be raised in a short time, if a rapid displacement of the phaser is required.
Sehr vorteilhaft ist es, wenn ein Drucksensor vorgesehen ist, der den im Druckspeicher zur Verfügung stehenden Druck erfasst. Auf diese Weise wird eine Steuerung der Aufladung des Druckspeichers ermöglicht.Very It is advantageous if a pressure sensor is provided which the recorded in the pressure accumulator available pressure. In this way, a control of the charge of the pressure accumulator is made possible.
Auch vorteilhaft ist, wenn dem Steuerventil ein weiteres Rückschlagventil vorgeschaltet ist und der Druckspeicher in die erste Ölversorgungsleitung stromab des Rückschlagventils und stromauf des weiteren Rückschlagventils mündet, da durch das weitere Rückschlagventil ein Rückströmen von Öl aus dem Phasensteller in die erste Ölversorgungsleitung verhindert wird.Also is advantageous if the control valve another check valve upstream and downstream of the accumulator in the first oil supply line the check valve and upstream of the other check valve opens, as through the additional check valve a backflow of oil from the phaser is prevented in the first oil supply line.
Desweiteren vorteilhaft ist, wenn das Aufladen des Druckspeichers in vorbestimmten Betriebszuständen, beispielsweise im Schubbetrieb, der Brennkraftmaschine oder nach Unterschreiten eines vorbestimmten Drucks im Druckspeicher erfolgt.Furthermore is advantageous if the charging of the accumulator in predetermined Operating conditions, for example, in overrun mode, the internal combustion engine or after falling below a predetermined pressure in the pressure accumulator he follows.
Außerdem vorteilhaft ist, wenn in der Verbindungsleitung ein von dem Steuergerät steuerbares Ventil vorgesehen ist, das welches zum Laden und Entladen des Speichers geöffnet ist und zum Speichern des Druckes geschlossen ist. Durch das Ventil wird der Phasensteller nur mit dem Druck des Druckspeichers beaufschlagt, wenn hohe Verstellgeschwindigkeiten erforderlich sind.Furthermore is advantageous if in the connecting line from the control unit controllable valve is provided, which for loading and unloading the memory is open and to save the pressure closed is. Through the valve, the phaser is only with the pressure of the pressure accumulator applied when high displacement speeds required are.
Zeichnungdrawing
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert.One Embodiment of the invention is in the drawing shown simplified and in the following description in more detail explained.
Beschreibung des AusführungsbeispielsDescription of the embodiment
Die Zeichnung zeigt schematisch eine erfindungsgemäße Vorrichtung.The Drawing shows schematically an inventive Contraption.
Die
Vorrichtung
Die
Drehwinkellage bzw. der Phasenwinkel wird auf bekannte Art und Weise
verstellt, indem die Rotorflügel
Der
hydraulische Druck in der Vorrichtung wird mittels eines Förderaggregates
Zukünftige
Brennverfahren erfordern zumindest zeitweise hohe Verstellgeschwindigkeiten
des Phasenstellers
Dem
Steuerventil
Der
Druckspeicher
In
der Verbindungsleitung
Der
Drucksensor
Selbstverständlich
können anstatt eines einzigen Phasenstellers
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - EP 1533484 A2 [0002] EP 1533484 A2 [0002]
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810001802 DE102008001802A1 (en) | 2008-05-15 | 2008-05-15 | Cam shaft rotation angle position changing device, has pressure reservoir e.g. spring-tensioned piston reservoir, which is flow connected with oil supply line downstream to check valve and upstream to control valve by connecting pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200810001802 DE102008001802A1 (en) | 2008-05-15 | 2008-05-15 | Cam shaft rotation angle position changing device, has pressure reservoir e.g. spring-tensioned piston reservoir, which is flow connected with oil supply line downstream to check valve and upstream to control valve by connecting pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102008001802A1 true DE102008001802A1 (en) | 2009-11-19 |
Family
ID=41180219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200810001802 Withdrawn DE102008001802A1 (en) | 2008-05-15 | 2008-05-15 | Cam shaft rotation angle position changing device, has pressure reservoir e.g. spring-tensioned piston reservoir, which is flow connected with oil supply line downstream to check valve and upstream to control valve by connecting pipe |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102008001802A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017217908A1 (en) * | 2016-06-15 | 2017-12-21 | Scania Cv Ab | Internal combustion engine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533484A2 (en) | 2003-11-17 | 2005-05-25 | BorgWarner Inc. | Camshaft phasing device |
-
2008
- 2008-05-15 DE DE200810001802 patent/DE102008001802A1/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533484A2 (en) | 2003-11-17 | 2005-05-25 | BorgWarner Inc. | Camshaft phasing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017217908A1 (en) * | 2016-06-15 | 2017-12-21 | Scania Cv Ab | Internal combustion engine |
| US10927720B2 (en) | 2016-06-15 | 2021-02-23 | Scania Cv Ab | Internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R005 | Application deemed withdrawn due to failure to request examination |