EP1260681A2 - Stössel für einen Ventiltrieb - Google Patents
Stössel für einen Ventiltrieb Download PDFInfo
- Publication number
- EP1260681A2 EP1260681A2 EP02009906A EP02009906A EP1260681A2 EP 1260681 A2 EP1260681 A2 EP 1260681A2 EP 02009906 A EP02009906 A EP 02009906A EP 02009906 A EP02009906 A EP 02009906A EP 1260681 A2 EP1260681 A2 EP 1260681A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- bottom part
- tappet
- cam
- cams
- inner bottom
- 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
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001133 acceleration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000029305 taxis Effects 0.000 description 1
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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/143—Tappets; Push rods for use with overhead 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
- F01L1/20—Adjusting or compensating clearance
- F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
- F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
- F01L1/245—Hydraulic tappets
- F01L1/25—Hydraulic tappets between cam and valve stem
-
- 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
- F01L2307/00—Preventing the rotation of tappets
Definitions
- the cam contact surface for the outer cams protrudes somewhat into the circular one Recess into it, however, the one for the loading by the External cam provided annular surface of the outer bottom part is sufficiently large, as explained in more detail below.
- the inner part is rotatably received in the outer part.
- the rectangular recess must be exactly aligned to other anti-rotation surfaces There is no need to prevent the inner part from tilting or jamming this exact alignment in the tappet according to the invention because of rotationally symmetrical circular recess.
- the inner part 7 acts via a play compensation element (not explained in more detail) 11 together with at least one gas exchange valve of the internal combustion engine.
- the outer part 8 works against a so-called lost motion spring 12.
- the outer part 8 of the plunger has two diametrically opposite one another Place the outer base part 2 on base 17.
- the locking piston 10 is slidably received in base holes 18. These bases are advantageous if the locking plunger is not installed further below the plunger surface due to installation can be arranged.
- the cam contact surfaces 5, 6 of the base parts 2, 3 in a plane of curvature parallel to the camshaft is convexly curved.
- the cam contact surfaces are parallel to the camshaft axis in the viewing direction 5, 6 convexly curved.
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
- Figur 1
- eine perspektivische Darstellung eines erfindungsgemäßen Stößel und
- Figur 2
- einen Schnitt durch den Stößel aus Figur 1.
- 1
- Boden
- 2
- äußeres Bodenteil
- 3
- inneres Bodenteil
- 4
- Schlüsselfläche
- 5
- Nockenkontaktfläche
- 6
- Nockenkontaktfläche
- 7
- Innenteil
- 8
- Außenteil
- 9
- Arretiereinrichtung
- 10
- Arretierkolben
- 11
- hydraulisches Spielausgleichselement
- 12
- Lost-motion-Feder
- 13
- Kreisbogenabschnitt
- 14
- Innenwandung
- 15
- kreisförmige Ausnehmung
- 16 17
- Sockel
- 18
- Sockelbohrung
Claims (7)
- Stößel für einen Ventiltrieb insbesondere einer Verbrennungskraftmaschine, dessen Außenteil (8) einen äußeren Bodenteil (2) aufweist und ein mit einem inneren Bodenteil (3) versehenes zylindrisches Innenteil (7) umgibt, wobei das Außenteil (8) und das Innenteil (7) in Betätigungsrichtung des Stößels relativ zueinander verschiebbar sind, und wobei das äußere Bodenteil (2) von zwei Außennocken und wobei der innere Bodenteil (3) von einem zwischen den Außennocken angeordneten Innennocken beaufschlagbar ist, und wobei der mit einer kreisförmigen Kontur versehene innere Bodenteil (3) an seinem Umfang zwei einander gegenüberliegende Abflachungen (4) zur Freistellung der Außennocken aufweist, wobei zwischen den Abflachungen (4) umfangsseitig Kreisbogenabschnitte (13) an dem inneren Bodenteil (3) ausgebildet sind dadurch gekennzeichnet, daß der äußere Bodenteil (2) mit einer Innenwandung (14) eine kreisförmige Ausnehmung (15) begrenzt, die eine Nockenkontaktlinie der Außennocken schneidet, wobei der innere Bodenteil (3) in der kreisförmigen Ausnehmung (15) angeordnet ist, und wobei die umfangsseitigen Kreisbogenabschnitte (13) des inneren Bodenteils (3) mit geringem radialen Abstand und koaxial zur Innenwandung (14) angeordnet ist.
- Stößel nach Anspruch 1, bei dem das Verhältnis des Außendurchmessers des inneren Bodenteils (3) zum Außendurchmesser des äußeren Bodenteils (2) mindestens 0,4 beträgt.
- Stößel nach Anspruch 1, bei dem das Verhältnis des Außendurchmessers des inneren Bodenteils (3) zum Außendurchmesser des äußeren Bodenteils (2) zwischen 0,4 und 0,7, vorzugsweise jedoch zwischen 0,5 und 0,6 liegt.
- Stößel nach Anspruch 1, bei dem eine Arretiereinrichtung (9) zum lösbaren Arretieren des Außenteils (8) mit dem Innenteil (7) vorgesehen ist.
- Stößel nach Anspruch 4, bei dem die Arretiereinrichtung (9) einen Arretierstift oder Arretierkolben (10) umfaßt, der entlang einer Achse verschiebbar ist, die parallel zu den Abflachungen (4) angeordnet ist.
- Stößel nach Anspruch 5 bei dem das äußere Bodenteil (2) des Außenteils (8) zwei diametral einander gegenüberliegende Sockel (7) aufweist, in deren Sockelbohrung (18) der Arretierkolben (10) verschiebbar aufgenommen ist.
- Stößel nach Anspruch 1, bei dem die Nockenkontaktfläche (5, 6) des inneren Bodenteils (7) und des äußeren Bodenteils (8) in einer zur Nockenwellenachse parallelen Krümmungsebene konvex gekrümmt sind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10123963 | 2001-05-17 | ||
| DE10123963A DE10123963A1 (de) | 2001-05-17 | 2001-05-17 | Stößel für einen Ventiltrieb |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1260681A2 true EP1260681A2 (de) | 2002-11-27 |
| EP1260681A3 EP1260681A3 (de) | 2003-01-08 |
| EP1260681B1 EP1260681B1 (de) | 2004-03-03 |
Family
ID=7685090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02009906A Expired - Lifetime EP1260681B1 (de) | 2001-05-17 | 2002-05-03 | Stössel für einen Ventiltrieb |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1260681B1 (de) |
| JP (1) | JP2002349213A (de) |
| AT (1) | ATE261055T1 (de) |
| DE (2) | DE10123963A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006002757A1 (en) * | 2004-07-01 | 2006-01-12 | Schaeffler Kg | Switchable cam follower |
| WO2007045618A1 (de) * | 2005-10-18 | 2007-04-26 | Robert Bosch Gmbh | Vorrichtung zum betätigen eines gaswechselventils einer brennkraftmaschine |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004056457A1 (de) | 2004-11-23 | 2006-06-08 | Schaeffler Kg | Tassenstößel für eine Brennkraftmaschine |
| DE102005017409A1 (de) * | 2005-04-15 | 2006-10-19 | Schaeffler Kg | Außenteil eines schaltbaren Tassenstößels |
| DE102017109017A1 (de) | 2017-04-27 | 2018-10-31 | Schaeffler Technologies AG & Co. KG | Verbrennungskolbenmotor und Verfahren zur Steuerung des Ansaugluftvolumenstroms eines Verbrennungskolbenmotors |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19652180A1 (de) | 1996-12-14 | 1998-06-18 | Schaeffler Waelzlager Ohg | Stößel für einen Ventiltrieb einer Brennkraftmaschine |
| EP0857860A1 (de) | 1997-02-06 | 1998-08-12 | General Motors Corporation | Schaltbarer Ventilstössel für schmalen Nocken |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3826365A1 (de) * | 1988-08-03 | 1990-02-15 | Bayerische Motoren Werke Ag | Ventilsteuerung fuer brennkraftmaschinen |
| JP2563713B2 (ja) * | 1990-02-16 | 1996-12-18 | グループ ロータス リミテッド | 弁制御手段 |
| DE4244287C2 (de) * | 1992-04-27 | 2001-12-13 | Iav Motor Gmbh | Ventiltrieb für Ladungswechselventile, vorzugsweise Einlaßventile von Hubkolbenbrennkraftmaschinen |
| US5555861A (en) * | 1992-04-27 | 1996-09-17 | Iav Motor Gmbh | Drive for gas exchange valves, preferably inlet valves for reciprocating internal combustion engines |
| DE4213856C2 (de) * | 1992-04-27 | 1994-08-04 | Iav Motor Gmbh | Ventiltrieb für Ladungswechselventile, von Hubkolbenbrennkraftmaschinen |
| US5361733A (en) * | 1993-01-28 | 1994-11-08 | General Motors Corporation | Compact valve lifters |
| DE4314619A1 (de) * | 1993-05-04 | 1994-11-10 | Schaeffler Waelzlager Kg | Stößel |
| DE4337330C2 (de) * | 1993-11-02 | 1996-03-21 | Iav Motor Gmbh | Rollenstößel mit zwei Rollen je Ventil für Ventiltriebe von Verbrennungsmotoren mit oben liegender Nockenwelle |
| JP3310490B2 (ja) * | 1994-10-27 | 2002-08-05 | 株式会社ユニシアジェックス | 内燃機関の動弁装置 |
| DE19502332A1 (de) * | 1995-01-26 | 1996-08-01 | Schaeffler Waelzlager Kg | Vorrichtung und Verfahren zum Betrieb eines Ventiltriebs einer Brennkraftmaschine |
-
2001
- 2001-05-17 DE DE10123963A patent/DE10123963A1/de not_active Withdrawn
-
2002
- 2002-05-03 EP EP02009906A patent/EP1260681B1/de not_active Expired - Lifetime
- 2002-05-03 AT AT02009906T patent/ATE261055T1/de not_active IP Right Cessation
- 2002-05-03 DE DE50200267T patent/DE50200267D1/de not_active Expired - Fee Related
- 2002-05-16 JP JP2002141319A patent/JP2002349213A/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19652180A1 (de) | 1996-12-14 | 1998-06-18 | Schaeffler Waelzlager Ohg | Stößel für einen Ventiltrieb einer Brennkraftmaschine |
| EP0857860A1 (de) | 1997-02-06 | 1998-08-12 | General Motors Corporation | Schaltbarer Ventilstössel für schmalen Nocken |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006002757A1 (en) * | 2004-07-01 | 2006-01-12 | Schaeffler Kg | Switchable cam follower |
| US7401584B2 (en) | 2004-07-01 | 2008-07-22 | Schaeffler Kg | Adjustable engine |
| WO2007045618A1 (de) * | 2005-10-18 | 2007-04-26 | Robert Bosch Gmbh | Vorrichtung zum betätigen eines gaswechselventils einer brennkraftmaschine |
Also Published As
| Publication number | Publication date |
|---|---|
| ATE261055T1 (de) | 2004-03-15 |
| EP1260681B1 (de) | 2004-03-03 |
| DE50200267D1 (de) | 2004-04-08 |
| DE10123963A1 (de) | 2002-11-21 |
| EP1260681A3 (de) | 2003-01-08 |
| JP2002349213A (ja) | 2002-12-04 |
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