DE102008006198B4 - Rotary piston adjusting device for adjusting the angle of rotation of a camshaft in relation to a crankshaft - Google Patents
Rotary piston adjusting device for adjusting the angle of rotation of a camshaft in relation to a crankshaft Download PDFInfo
- Publication number
- DE102008006198B4 DE102008006198B4 DE102008006198.0A DE102008006198A DE102008006198B4 DE 102008006198 B4 DE102008006198 B4 DE 102008006198B4 DE 102008006198 A DE102008006198 A DE 102008006198A DE 102008006198 B4 DE102008006198 B4 DE 102008006198B4
- Authority
- DE
- Germany
- Prior art keywords
- camshaft
- sleeve
- rotary piston
- output gear
- crankshaft
- 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.)
- Expired - Fee Related
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
- F01L1/34—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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- 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
- F01L2001/0475—Hollow camshafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Rotationskolbenverstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle (1) gegenüber einer Kurbelwelle, mit einem von der Kurbelwelle antreibbaren Antriebsrad (2) und einem drehfest mit der Nockenwelle (1) verbundenen Abtriebsrad (3) aus Leichtmetall und einer Hülse (6) zur Befestigung des Abtriebsrades (3) an der Nockenwelle (1), dadurch gekennzeichnet, dass die Hülse (6) und die Nockenwelle (1) einen im wesentlichen identischen Temperaturausdehnungskoeffizienten aufweisen, wobei das Abtriebsrad (3) über die Hülse (6) direkt mit der Nockenwelle (1) verbunden ist.Rotary piston adjusting device for adjusting the angle of rotation of a camshaft (1) with respect to a crankshaft, with a drive wheel (2) that can be driven by the crankshaft and an output wheel (3) made of light metal and connected to the camshaft (1) in a rotationally fixed manner, and a sleeve (6) for fastening the output wheel (3) ) on the camshaft (1), characterized in that the sleeve (6) and the camshaft (1) have an essentially identical coefficient of thermal expansion, the output gear (3) being connected directly to the camshaft (1) via the sleeve (6) is.
Description
Gebiet der ErfindungField of invention
Die Erfindung betrifft eine Rotationskolbenverstelleinrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle, mit einem von der Kurbelwelle antreibbaren Antriebsrad, einem drehfest mit der Nockenwelle verbundenen Abtriebsrad aus Leichtmetall und einer Hülse zur Befestigung des Abtriebsrades an der Nockenwelle.The invention relates to a rotary piston adjusting device for adjusting the angle of rotation of a camshaft with respect to a crankshaft, with a drive wheel that can be driven by the crankshaft, a light metal output wheel connected in a rotationally fixed manner to the camshaft and a sleeve for fastening the output wheel to the camshaft.
Aus der
Die
Aufgabe der Erfindung ist es, eine gattungsgemäße Rotationskolbenverstelleinrichtung zu schaffen, welche auch bei wechselnden Temperaturen auf Dauer einen sicheren Verbund zwischen Antriebsrad und Nockenwelle aufweisen soll. The object of the invention is to create a generic rotary piston adjusting device which is intended to have a secure connection between the drive wheel and the camshaft over the long term, even with changing temperatures.
Die Lösung der Aufgabe erfolgt durch eine Rotationskolbenverstelleinrichtung mit den Merkmalen des Anspruchs 1. Vorteilhafte Aus- und Weiterbildungen sind den Unteransprüchen zu entnehmen.The object is achieved by a rotary piston adjusting device with the features of
Erfindungsgemäß wird vorgeschlagen, dass die Hülse und die Nockenwelle einen im Wesentlichen identischen Temperaturausdehnungskoeffizienten aufweisen, so dass ihr Ausdehnungsverhalten bei Erwärmung identisch ist und keine Spannungen zwischen beiden Teilen auftreten.According to the invention, it is proposed that the sleeve and the camshaft have an essentially identical coefficient of thermal expansion, so that their expansion behavior when heated is identical and no stresses occur between the two parts.
Es wird weiter vorgeschlagen, dass das Abtriebsrad aus einem Sinterwerkstoff hergestellt ist und die Hülse durch Aufschmelzen der Oberflächen der Hülse und/oder des Sinterwerkstoffes mit dem Abtriebsrad verbindbar ist.It is further proposed that the output gear is made of a sintered material and the sleeve can be connected to the output gear by melting the surfaces of the sleeve and / or the sintered material.
Erfindungsgemäß wird vorgeschlagen, dass das Abtriebsrad über die Hülse direkt mit der Nockenwelle verbunden ist, d.h. dass eine im Stand der Technik vorgesehene Zentralschraube entfällt. Damit vereinfacht sich der konstruktive Aufbau und Montage der Rotationskolbenverstelleinrichtung.According to the invention, it is proposed that the output gear be connected directly to the camshaft via the sleeve, i.e. that a central screw provided in the prior art is omitted. This simplifies the design and assembly of the rotary piston adjusting device.
Als einfache und kostengünstige Arten der Verbindung von Hülse und Nockenwelle wird vorgeschlagen, beide Teile zu verschweißen, zu verpressen oder zu verschrauben.As a simple and inexpensive way of connecting the sleeve and camshaft, it is proposed to weld, press or screw both parts.
Die Hülse kann vorzugsweise einen höheren Verformungswiderstand aufweisen als das Abtriebsrad, so dass die durch die Verbindung zwischen dem mit der Hülse versehenen Abtriebsrad und der Nockenwelle entstehenden Materialspannungen im wesentlichen von der Hülse aufgenommen werden und das aus Leichtmetall hergestellte Abtriebsrad nicht belastet wird.The sleeve can preferably have a higher resistance to deformation than the output gear, so that the material stresses caused by the connection between the output gear provided with the sleeve and the camshaft are essentially absorbed by the sleeve and the output gear made of light metal is not loaded.
Nachfolgend wird die Erfindung anhand zweier bevorzugten Ausführungsbeispiele näher beschrieben, wobei die Zeichnungen im Einzelnen zeigen:
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1 Rotationskolbenverstelleinrichtung mit über eine Zentralschraube an der Nockenwelle befestigtem Abtriebsrad -
2 Rotationskolbenverstelleinrichtung mit einem Abtriebsrad mit einer direkt auf der Nockenwelle befestigten Hülse
-
1 Rotary piston adjustment device with an output gear attached to the camshaft via a central screw -
2 Rotary piston adjustment device with an output gear with a sleeve attached directly to the camshaft
In
In
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008006198.0A DE102008006198B4 (en) | 2008-01-26 | 2008-01-26 | Rotary piston adjusting device for adjusting the angle of rotation of a camshaft in relation to a crankshaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008006198.0A DE102008006198B4 (en) | 2008-01-26 | 2008-01-26 | Rotary piston adjusting device for adjusting the angle of rotation of a camshaft in relation to a crankshaft |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102008006198A1 DE102008006198A1 (en) | 2009-07-30 |
DE102008006198B4 true DE102008006198B4 (en) | 2021-01-14 |
Family
ID=40794438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008006198.0A Expired - Fee Related DE102008006198B4 (en) | 2008-01-26 | 2008-01-26 | Rotary piston adjusting device for adjusting the angle of rotation of a camshaft in relation to a crankshaft |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102008006198B4 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000034909A (en) * | 1998-07-16 | 2000-02-02 | Mitsubishi Electric Corp | Valve timing varying device and manufacture of valve timing varying device |
DE10134320A1 (en) * | 2001-07-14 | 2003-01-23 | Ina Schaeffler Kg | Device for changing the control times of gas shuttle valves in internal combustion engines comprises a driven unit axially, radially and peripherally locked on a sleeve and screwed in a deformation-free manner on a camshaft |
-
2008
- 2008-01-26 DE DE102008006198.0A patent/DE102008006198B4/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000034909A (en) * | 1998-07-16 | 2000-02-02 | Mitsubishi Electric Corp | Valve timing varying device and manufacture of valve timing varying device |
DE10134320A1 (en) * | 2001-07-14 | 2003-01-23 | Ina Schaeffler Kg | Device for changing the control times of gas shuttle valves in internal combustion engines comprises a driven unit axially, radially and peripherally locked on a sleeve and screwed in a deformation-free manner on a camshaft |
Also Published As
Publication number | Publication date |
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DE102008006198A1 (en) | 2009-07-30 |
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Legal Events
Date | Code | Title | Description |
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8127 | New person/name/address of the applicant |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 H, DE |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120823 Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20120823 |
|
R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140217 Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140217 |
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R012 | Request for examination validly filed | ||
R012 | Request for examination validly filed |
Effective date: 20141006 |
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R081 | Change of applicant/patentee |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150223 |
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R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |