DE102015204928A1 - Sliding cam system with a sliding block mounted on an actuator housing - Google Patents
Sliding cam system with a sliding block mounted on an actuator housing Download PDFInfo
- Publication number
- DE102015204928A1 DE102015204928A1 DE102015204928.0A DE102015204928A DE102015204928A1 DE 102015204928 A1 DE102015204928 A1 DE 102015204928A1 DE 102015204928 A DE102015204928 A DE 102015204928A DE 102015204928 A1 DE102015204928 A1 DE 102015204928A1
- Authority
- DE
- Germany
- Prior art keywords
- sliding
- sliding cam
- housing
- actuator
- cam system
- 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.)
- Ceased
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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
- F01L1/04—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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
Abstract
Vorgeschlagen ist ein Schiebenockensystem mit zumindest einem Schiebenocken (2), der auf zumindest einer axial festgelegten Grundwelle (1) einer Hubkolbenbrennkraftmaschine zur Bildung einer Nockenwelle drehfest, aber axial verschiebbar angeordnet ist, mit zumindest einer ein maschinenfestes Gehäuse (5) aufweisenden Aktorvorrichtung (6) zur Verstellung des Schiebenockens (2) in unterschiedliche axiale Positionen mittels zumindest eines mit zumindest einer Verschiebenut (4) am Umfang des Schiebenockens (2) zumindest indirekt in Wirkverbindung stehenden Aktorstiftes (16), an dem eine Rückhubfeder (17) zum Deaktivieren des Aktorstiftes (16) angreift, wobei an dem dem Schiebenocken (2) zugewandten Bereich des Gehäuses (5) ein Kulissenstein (12) parallel zur Drehachse der Grundwelle (1) verschiebbar gelagert ist und am Kulissenstein (12) ein Führungsstift (13) befestigt ist, der in die Verschiebenut (4) eingreift, wobei die Verschiebenut (4) umlaufend ohne Unterbrechung ausgeführt ist, wobei am Kulissenstein (12) dem Aktorstift (16) zugewandt zwei zum Aktorstift (16) passende Öffnungen (14) eingearbeitet sind und wobei im Gehäuse (5) mehr als ein Aktorstift (15 und 16) parallel zueinander angeordnet sind.Proposed is a sliding cam system with at least one sliding cam (2) which is rotatably but axially displaceably arranged on at least one axially fixed fundamental shaft (1) of a reciprocating internal combustion engine with at least one actuator device (6) having a machine-fixed housing (5). for adjusting the sliding cam (2) into different axial positions by means of at least one actuator pin (16) at least indirectly in operative connection with at least one sliding groove (4) on the circumference of the sliding cam (2), to which a return stroke spring (17) for deactivating the actuator pin (16) 16), wherein on the sliding cam (2) facing the region of the housing (5) a sliding block (12) parallel to the axis of rotation of the fundamental shaft (1) is slidably mounted and on the sliding block (12) a guide pin (13) is attached, the engages in the displacement groove (4), wherein the displacement groove (4) is executed circumferentially without interruption, wherein on the sliding block (12) the Aktorstift (16) facing two to Aktorstift (16) matching openings (14) are incorporated and wherein in the housing (5) more than one Aktorstift (15 and 16) are arranged parallel to each other.
Description
Die Erfindung bezieht sich auf ein Schiebenockensystem mit zumindest einem Schiebenocken, der auf einer zumindest axial festgelegten Grundwelle einer Hubkolbenbrennkraftmaschine zur Bildung einer Nockenwelle drehfest, aber axial verschiebbar angeordnet ist, mit zumindest einer ein maschinenfestes Gehäuse aufweisenden Aktorvorrichtung zur Verstellung des Schiebenockens in unterschiedliche axiale Positionen mittels zumindest eines mit zumindest einer Verschiebenut am Umfang des Schiebenockens zumindest indirekt in Wirkverbindung stehenden Aktorstiftes, an dem eine Rückhubfeder zum Deaktivieren des Aktorstiftes angreift, wobei an dem dem Schiebenocken zugewandten Bereich des Gehäuses ein Kulissenstein parallel zur Drehachse der Grundwelle verschiebbar gelagert ist und am Kulissenstein ein Führungsstift befestigt ist, der dauerhaft mit der Verschiebenut in Eingriff steht, und wobei am Kulissenstein dem Aktorstift zugewandt zwei zum Aktorstift passende Öffnungen eingearbeitet sind.The invention relates to a sliding cam system with at least one sliding cam, which is rotatably mounted on an at least axially fixed fundamental shaft of a reciprocating internal combustion engine, but axially displaceable, with at least one machine-fixed housing having actuator device for adjusting the sliding cam in different axial positions by means at least one with at least one sliding groove on the circumference of the sliding cam at least indirectly operatively Aktorstiftes on which a return spring for deactivating the Aktorstiftes engages, wherein on the sliding cam facing portion of the housing a sliding block is mounted parallel to the axis of rotation of the fundamental displaced and on the sliding block a Guide pin is fixed, which is permanently engaged with the sliding groove, and wherein the sliding block facing the Aktorstift two incorporated to Aktorstift openings are incorporated.
Derartige Schiebenockensysteme sind allgemein bekannt. Das Schiebenockensystem gemäß der
Es ist bereits vorgeschlagen worden,
Aufgabe der Erfindung ist es daher, ein Schiebenockensystem der eingangs beschriebenen Art zur Verfügung zu stellen, bei dem mehr als drei axiale Positionen mit mehr als drei Nocken geschaltet werden können. Dies soll mit einfachen kostengünstigen Mitteln erfolgen.The object of the invention is therefore to provide a sliding cam system of the type described above, in which more than three axial positions can be switched with more than three cams. This should be done with simple inexpensive means.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass im Gehäuse mehr als ein Aktorstift parallel zueinander angeordnet sind. Dadurch ist es möglich, dass jeder der Aktorstifte mit einem der passenden Öffnungen in Wirkverbindung tritt, wodurch bei zwei Aktorstiften vier axiale Positionen geschaltet werden können. Weiterhin wird vorgeschlagen, dass die Öffnungen und die Aktorstifte in Richtung der Drehachse der Grundwelle gesehen nebeneinander angeordnet sind, wodurch eine Linie durch die Öffnungen und die Aktorstifte vorgegeben ist. Der Mittenabstand der Öffnungen und der Aktorstifte soll gleich gewählt werden, so dass jeder der Aktorstifte in jede der Öffnungen eingreifen kann. Der Mittenabstand ist dabei so gewählt, dass er dem Verschiebeweg der Verschiebenut von einem Nocken zum anderen entspricht.According to the invention the object is achieved in that more than one Aktorstift are arranged parallel to each other in the housing. This makes it possible for each of the actuator pins to be operatively connected to one of the matching openings, whereby four axial positions can be switched in the case of two actuator pins. Furthermore, it is proposed that the openings and the actuator pins are arranged side by side as seen in the direction of the axis of rotation of the fundamental shaft, whereby a line through the openings and the actuator pins is predetermined. The pitch of the openings and the actuator pins should be chosen the same so that each of the actuator pins can engage in each of the openings. The center distance is chosen so that it corresponds to the displacement of the sliding groove from one cam to the other.
Die Verschiebenut ist vorzugsweise in einem radial vorstehenden Nutabschnitt eingearbeitet, wobei in einer parallel zur Drehachse der Grundwelle ausgerichteten Längsführung am Gehäuse ein Bügel gelagert ist, der den Nutabschnitt umgreift. An der Längsführung des Bügels, die seitliche Führungslaschen aufweist, und dem Gehäuse ist eine Arretiervorrichtung mit einem federbelasteten Arretierkörper vorgesehen, wobei der Arretierkörper mit vier Arretierkerben oder vier Arretiersenken an den Führungslaschen in Wirkverbindung steht. Der Bügel dient als Lager für den Kulissenstein.The displacement groove is preferably incorporated in a radially projecting groove portion, wherein in a direction parallel to the axis of rotation of the fundamental shaft-oriented longitudinal guide on the housing, a bracket is mounted, which surrounds the groove portion. On the longitudinal guide of the bracket, which has lateral guide straps, and the housing, a locking device is provided with a spring-loaded locking body, wherein the locking body is operatively connected to four locking notches or four locking grooves on the guide plates. The bracket serves as a bearing for the sliding block.
Die Erfindung ist in den Zeichnungen beschrieben:The invention is described in the drawings:
In den
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Grundwelle fundamental wave
- 22
- Schiebenocken pushers
- 33
- Nutabschnitt groove
- 44
- Verschiebenut shift groove
- 55
- Gehäuse casing
- 66
- Aktorvorrichtung actuator device
- 77
- Bügel hanger
- 88th
- Führungslaschen guide plates
- 99
- Arretiersenken Arretiersenken
- 1010
- Arretierfeder detent
- 1111
- Arretierkörper detent
- 1212
- Kulissenstein sliding block
- 1313
- Führungsstift guide pin
- 1414
- Öffnungen openings
- 1515
- Aktorstift actuator pin
- 1616
- Aktorstift actuator pin
- 1717
- Rückhubfedern Rückhubfedern
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES 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 of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- EP 0798451 A1 [0002] EP 0798451 A1 [0002]
- DE 102013218181 [0003, 0003] DE 102013218181 [0003, 0003]
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015204928.0A DE102015204928A1 (en) | 2015-03-19 | 2015-03-19 | Sliding cam system with a sliding block mounted on an actuator housing |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015204928.0A DE102015204928A1 (en) | 2015-03-19 | 2015-03-19 | Sliding cam system with a sliding block mounted on an actuator housing |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102015204928A1 true DE102015204928A1 (en) | 2016-07-21 |
Family
ID=56293767
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102015204928.0A Ceased DE102015204928A1 (en) | 2015-03-19 | 2015-03-19 | Sliding cam system with a sliding block mounted on an actuator housing |
Country Status (1)
Country | Link |
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DE (1) | DE102015204928A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0798451A1 (en) | 1996-03-25 | 1997-10-01 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Valve control of an internal combustion engine |
DE102013218181A1 (en) | 2013-09-11 | 2015-03-12 | Schaeffler Technologies Gmbh & Co. Kg | Sliding cam system with a sliding block |
-
2015
- 2015-03-19 DE DE102015204928.0A patent/DE102015204928A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0798451A1 (en) | 1996-03-25 | 1997-10-01 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Valve control of an internal combustion engine |
DE102013218181A1 (en) | 2013-09-11 | 2015-03-12 | Schaeffler Technologies Gmbh & Co. Kg | Sliding cam system with a sliding block |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R012 | Request for examination validly filed | ||
R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R230 | Request for early publication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |