DE4329590B4 - Valve train with plunger device for variable valve lift control, in particular for a gas exchange valve of an internal combustion engine - Google Patents
Valve train with plunger device for variable valve lift control, in particular for a gas exchange valve of an internal combustion engine Download PDFInfo
- Publication number
- DE4329590B4 DE4329590B4 DE19934329590 DE4329590A DE4329590B4 DE 4329590 B4 DE4329590 B4 DE 4329590B4 DE 19934329590 DE19934329590 DE 19934329590 DE 4329590 A DE4329590 A DE 4329590A DE 4329590 B4 DE4329590 B4 DE 4329590B4
- Authority
- DE
- Germany
- Prior art keywords
- locking
- valve
- tappet
- shear
- control
- 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
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Ventiltrieb
mit Stößelvorrichtung
zur variablen Ventilhubsteuerung, insbesondere für ein Gaswechselventil einer
Brennkraftmaschine,
– mit
einem von zwei gleichen, beabstandeten Steuernocken (5) einer Steuerwelle
(6) betätigbaren
Außenstößel (7)
und
– einem
relativ zu diesem mittels eines gesonderten Steuernockens (8) bewegbaren
Innenstößel (9)
, wobei
– der
maschinenseitig geführte
Außenstößel (7)
zur Verriegelung mit mit dem Innenstößel (9) ein beaufschlagtes
Riegelelement (11) umfasst, das
– mit einem im Maschinengehäuse (10)
der Außenstößel-Führung (12)
benachbart angeordneten Steuerkolben (13) quer zur Verriegelungsrichtung
(= Ventilhubrichtung) in gleitbeweglicher Verbindung steht,
dadurch
gekennzeichnet,
– dass
das Riegelelement (11) einen den Außenstößel (7) mit dem Innenstößel (9)
verriegelnden Scherbolzen (14) von relativ kleinem Durchmesser umfasst,
dem
– ein
im Innenstößel (9)
fluchtend angeordneter zweiter Scherbolzen (15) von gleichem Durchmesser
für eine
zusätzliche
Verriegelung des Innenstößels (9)
mit dem Außenstößel (7)
zugeordnet ist, wobei
– der
zweite Scherbolzen (15) vom ersten,...Valve drive with plunger device for variable valve lift control, in particular for a gas exchange valve of an internal combustion engine,
- With one of two equal, spaced control cam (5) of a control shaft (6) operable outer tappet (7) and
- A relative to this by means of a separate control cam (8) movable inner tappet (9), wherein
- The outer side ram (7), guided on the machine side, for locking with the inner ram (9) comprises an acted on locking element (11), which
- with a in the machine housing (10) of the outer tappet guide (12) adjacently disposed control piston (13) transversely to the locking direction (= valve lift direction) in slidable connection,
characterized,
- That the locking element (11) comprises a the outer plunger (7) with the inner plunger (9) locking shear bolt (14) of relatively small diameter, the
- A in the inner plunger (9) arranged in alignment second shear pin (15) of the same diameter for an additional locking of the inner plunger (9) with the outer plunger (7) is associated, wherein
- the second shear bolt (15) from the first, ...
Description
Die Erfindung geht gemäß dem Oberbegriff des Patentanspruches 1 von der Patentanmeldung P 42 06 898 aus.The Invention is according to the preamble of Claim 1 of the patent application P 42 06 898.
Der darin vorgeschlagene Ventiltrieb umfaßt eine Stößelvorrichtung zur variablen Ventilhubsteuerung mit bei einer ersten Hubsteuerung relativ zueinander beweglichen Außen- und Innenstößeln. Bei der zweiten Hubsteuerung sind einander zugeordnete Außen- und Innenstößel jeweils über ein gemeinsames Riegelelement verblockbar, wobei das Riegelelement über einen im Maschinengehäuse hydraulisch betätigbar angeordneten Steuerkolben gesteuert ist. Dieses Riegelelement ist zur kostengünstigen Fertigung durch relativ große Toleranzen als ein bei verblockten Stößeln auf Biegung beanspruchter Riegel gestaltet.Of the therein proposed valve train comprises a plunger device for variable Ventilhubsteuerung with at a first stroke control relative to each other movable exterior and inner tappets. In the second stroke control are associated with each other outside and Inner tappets each over one common locking element blockable, wherein the locking element via a in the machine housing hydraulically actuated arranged control piston is controlled. This locking element is for cost-effective production through relatively large Tolerances as a stressed in bended rams on bending Designed latch.
Weiter ist aus der DE-A 42 10 567 ein gattungsgleicher Ventiltrieb bekannt mit einer Stößelvorrichtung, bei der zum Verblocken von Außen- und Innenstößel eine quer zur Hubrichtung in eine Umfangsnut des Innenstößels über einen maschinengehäuseseitig angeordneten Steuerkolben verlagerbare Sperrscheibe als Riegelelement dient.Further is known from DE-A 42 10 567 a generic same valve train with a plunger device, in the blocking of foreign and inner tappets one transverse to the stroke direction in a circumferential groove of the inner tappet via a machine housing side arranged control piston displaceable locking disc as a locking element serves.
Schließlich ist aus der DE-A 40 32 291 ein gattungsfremder Ventiltrieb bekannt, bei dem als Riegelelemente für zu verblockende Teile zur Ventilhubsteuerung Scherbolzen dienen.Finally is from DE-A 40 32 291 a generic foreign valve train known in which as locking elements for to serve blocking parts for valve lift control Scherbolzen.
Der Erfindung liegt die Aufgabe zugrunde, bei einer kleinbauenden Stößelvorrichtung eine in den steuernockenseitigen Endbereichen von Außen- und Innenstößel anordbare Verriegelungseinrichtung aufzuzeigen.Of the Invention is based on the object in a small-sized ram device one in the control cam-side end portions of outdoor and Interior tappet can be arranged Show locking device.
Diese Aufgabe ist nach Anspruch 1 durch eine aufgrund der Beanspruchungsart vorteilhaft kleinbauende Verriegelungseinrichtung mit einem Riegelelement gelöst, das einen den Außenstößel mit dem Innenstößel verriegelnden Scherbolzen umfaßt.These Task is according to claim 1 by a due to the type of stress advantageously small-sized locking device with a locking element solved, the one with the outer ram with the inner ram locking Shear bolt included.
Die Erfindung ist in der Kombination einer von der Stößelvorrichtung extern im Maschinengehäuse angeordneten Steuereinrichtung für das Riegelelement und der Verwendung eines auf Scherung beanspruchten Riegelelementes zu sehen.The Invention is in the combination of one of the ram device externally in the machine housing arranged control device for the locking element and the use of a shear stressed To see locking element.
Wegen geringen Bauaufwandes bevorzugt ist im Innenstößel ein vom außenstößelseitigen Scherbolzen antreibbarer, weiterer Scherbolzen vorgesehen. Damit sind beide Stößel gleichmäßig belastet verblockbar.Because of Low construction cost is preferred in the inner plunger from the outer plunger side shear bolt drivable, further shear bolt provided. Both are Tappet evenly loaded into blocks.
Der innenstößelseitige Scherbolzen ist zur sicheren entriegelten Positionierung gegen die Verriegelungsrichtung be aufschlagt an einem Anschlag des Innenstößels anschlagend angeordnet. Vorzugsweise sind beide Scherbolzen einer Stößelvorrichtung federbeaufschlagt.Of the inside plunger side Shear bolt is for secure unlocked positioning against the Locking direction be aufschlagt striking a stop of the inner tappet arranged. Preferably, both shear pins of a plunger device spring-loaded.
Diese durch Federn bewirkte Rückstellung in die entriegelte Position der fluchtend in den Stößeln einer Stößelvorrichtung angeordneten Scherbolzen kann in weiterer Ausgestaltung der Erfindung vorzugsweise hydraulisch unterstützt werden, wobei eine den innenstößelseitigen Scherbolzen aufnehmende Verriegelungsbohrung im Außenstößel mit einer steuerbaren Druckleitung verbindbar ist.These spring reset in the unlocked position of the aligned in the rams of a plunger device arranged shear pin can in a further embodiment of the invention preferably hydraulically assisted be one with the inner tappet side Shear bolt receiving locking hole in outer ram with a controllable pressure line is connectable.
Die erfindungsgemäße Verriegelungseinrichtung mit extern über einen im Maschinengehäuse angeordneten Steuerkolben betätigbare Scherbolzen wird durch den vorteilhaft geringen Bauraumbedarf dieser Scherbolzen bevorzugt für eine mit einem einzigen Gaswechselventil zusammenwirkende Stößelvorrichtung mit einem dem Innenstößel zugeordneten Ventilspiel-Ausgleichselement verwendet.The Locking device according to the invention with externally over one in the machine housing arranged control piston operable Scherbolzen is due to the advantageously low space requirement of this Shear bolts preferred for a cooperating with a single gas exchange valve plunger device with an inner tappet associated Valve clearance compensating element used.
Die Erfindung ist anhand einer Prinzipdarstellung beschrieben.The The invention is described with reference to a schematic diagram.
Ein
Ventiltrieb
Zur
Erzielung einer Verriegelungseinrichtung von kleinem Bauraum im
steuerwellenseitigen Endbereich der Stößelvorrichtung
Um
die Scherbelastung in der Stößelvorrichtung
Die
in den beiden Stößeln
Aufgrund
des geringen Einbauraumes der Scherbolzen
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934329590 DE4329590B4 (en) | 1993-09-02 | 1993-09-02 | Valve train with plunger device for variable valve lift control, in particular for a gas exchange valve of an internal combustion engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19934329590 DE4329590B4 (en) | 1993-09-02 | 1993-09-02 | Valve train with plunger device for variable valve lift control, in particular for a gas exchange valve of an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE4329590A1 DE4329590A1 (en) | 1995-03-09 |
DE4329590B4 true DE4329590B4 (en) | 2005-01-27 |
Family
ID=6496630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19934329590 Expired - Fee Related DE4329590B4 (en) | 1993-09-02 | 1993-09-02 | Valve train with plunger device for variable valve lift control, in particular for a gas exchange valve of an internal combustion engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE4329590B4 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19601587A1 (en) * | 1996-01-18 | 1997-07-24 | Schaeffler Waelzlager Kg | Tappet for a valve train of an internal combustion engine |
DE19642718A1 (en) * | 1996-10-16 | 1998-04-23 | Schaeffler Waelzlager Ohg | Tappet for a valve train of an internal combustion engine |
DE10139289A1 (en) * | 2001-08-09 | 2003-02-27 | Ina Schaeffler Kg | IC engine with switchable valve gear member has retainer for switching valve housing directly mounted on cam follower |
FR2979944B1 (en) * | 2011-09-12 | 2016-05-06 | Valeo Systemes De Controle Moteur | SYSTEM FOR TRANSMITTING THE MOTION OF A CAME TO AT LEAST ONE VALVE |
FR2979945B1 (en) * | 2011-09-12 | 2016-05-06 | Valeo Systemes De Controle Moteur | SYSTEM FOR TRANSMITTING THE MOTION OF AT LEAST TWO CAMES TO AT LEAST ONE VALVE |
FR2980518B1 (en) * | 2011-09-26 | 2015-06-19 | Valeo Sys Controle Moteur Sas | SYSTEM FOR TRANSMITTING CAM MOVEMENT TO A VALVE |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63117109A (en) * | 1986-11-01 | 1988-05-21 | Honda Motor Co Ltd | Valve system for internal combustion engine |
DE4032291A1 (en) * | 1989-10-12 | 1991-04-25 | Nissan Motor | Rocking lever assembly for IC engine valve gear - has rocking lever swivelably mounted on lever shaft, with lever section coacting with plate valve |
WO1991012413A1 (en) * | 1990-02-16 | 1991-08-22 | Group Lotus Plc | Valve control means |
JPH0494405A (en) * | 1990-08-08 | 1992-03-26 | Ntn Corp | Variable valve timing device |
EP0495260A2 (en) * | 1990-12-14 | 1992-07-22 | General Motors Corporation | Apparatus for operating engine valve |
DE4202506A1 (en) * | 1991-02-12 | 1992-08-13 | Volkswagen Ag | Variable lift valve drive - has secondary pressure chamber and cams |
DE4210567A1 (en) * | 1991-04-15 | 1992-10-22 | Volkswagen Ag | Variable valve drive for IC engine - has two tappets connectable by coupling ring |
DE4206898A1 (en) * | 1992-03-05 | 1993-09-09 | Bayerische Motoren Werke Ag | Variable stroke control for IC engine valve - has cam running surface spring-loaded against adjustable support bar to give flexing action |
DE4213855A1 (en) * | 1992-04-27 | 1993-10-28 | Iav Motor Gmbh Ingenieurgesell | Valve drive for intake valves of IC engine - has hydraulic tolerance compensation device between stroke transmission element and valve |
-
1993
- 1993-09-02 DE DE19934329590 patent/DE4329590B4/en not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63117109A (en) * | 1986-11-01 | 1988-05-21 | Honda Motor Co Ltd | Valve system for internal combustion engine |
DE4032291A1 (en) * | 1989-10-12 | 1991-04-25 | Nissan Motor | Rocking lever assembly for IC engine valve gear - has rocking lever swivelably mounted on lever shaft, with lever section coacting with plate valve |
WO1991012413A1 (en) * | 1990-02-16 | 1991-08-22 | Group Lotus Plc | Valve control means |
JPH0494405A (en) * | 1990-08-08 | 1992-03-26 | Ntn Corp | Variable valve timing device |
EP0495260A2 (en) * | 1990-12-14 | 1992-07-22 | General Motors Corporation | Apparatus for operating engine valve |
DE4202506A1 (en) * | 1991-02-12 | 1992-08-13 | Volkswagen Ag | Variable lift valve drive - has secondary pressure chamber and cams |
DE4210567A1 (en) * | 1991-04-15 | 1992-10-22 | Volkswagen Ag | Variable valve drive for IC engine - has two tappets connectable by coupling ring |
DE4206898A1 (en) * | 1992-03-05 | 1993-09-09 | Bayerische Motoren Werke Ag | Variable stroke control for IC engine valve - has cam running surface spring-loaded against adjustable support bar to give flexing action |
DE4213855A1 (en) * | 1992-04-27 | 1993-10-28 | Iav Motor Gmbh Ingenieurgesell | Valve drive for intake valves of IC engine - has hydraulic tolerance compensation device between stroke transmission element and valve |
Also Published As
Publication number | Publication date |
---|---|
DE4329590A1 (en) | 1995-03-09 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20120403 |