EP1869295A1 - Aussenteil eines schaltbaren tassenstössels - Google Patents
Aussenteil eines schaltbaren tassenstösselsInfo
- Publication number
- EP1869295A1 EP1869295A1 EP06723461A EP06723461A EP1869295A1 EP 1869295 A1 EP1869295 A1 EP 1869295A1 EP 06723461 A EP06723461 A EP 06723461A EP 06723461 A EP06723461 A EP 06723461A EP 1869295 A1 EP1869295 A1 EP 1869295A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outer part
- shirt
- web
- inlet
- part according
- 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
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000001746 injection moulding Methods 0.000 claims abstract description 12
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000005520 cutting process Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000012530 fluid Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 238000005495 investment casting Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 210000001061 forehead Anatomy 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 238000003466 welding 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
- F01L1/12—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
- 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
Definitions
- the invention relates to an outer part of a switchable bucket tappet for a drive of an internal combustion engine, with a hollow cylindrical shirt which is receivable via its outer jacket in a guide bore of a cylinder head of the engine, which shirt is limited on its cam-side end by a bottom cam as cam surface, wherein concentric to Shirt a extending from an inner edge of the bottom in the cam-distal direction guide bushing extends with a bore for an inner part of the bucket tappet; wherein the shirt is connected to the guide bushing via a diametrically extending through the outer part and extending axially below the bottom first web in which a guide bore for at least one slider-like coupling means is applied, which first web cut laterally on a radial side of a supply hole for hydraulic means which is fed by a first channel emanating from a first inlet on the outer coat of the shirt.
- An outer part for a switchable bucket tappet is apparent from the considered as generic forming DE 43 14 619 A1. This is, for example, produced by extrusion or machining. It can be seen that inside the Externally an additional sheet metal part for generating hydraulic fluid channels for supplying this is provided to coupling means and a hydraulic clearance compensation element. The sheet metal part must be laboriously welded to an inner jacket of the shirt of the outer part and sealed there. In order to guarantee the seal, the inner jacket also requires a subsequent machining. In sum, the production costs for the aforementioned outer part is unnecessarily high, which leads to unnecessarily high costs in mass production.
- the object of the invention is therefore to provide an outer part of the aforementioned type, in which the cited disadvantages are eliminated.
- this object is achieved in that the outer part is shown integrally by metal injection molding (MIM) or investment casting.
- MIM metal injection molding
- the outer part should preferably be created with its all components such as webs, channels, etc. by metal injection or by investment casting.
- an inner part of the switchable tappet is to be arranged within the guide bush, which is provided with a hydraulic clearance compensation device.
- a hydraulic clearance compensation device In order to supply this with hydraulic means, it is provided to apply to the first inlet on the outer jacket of the shirt diametrically opposite another inlet on the outer jacket of the shirt, through which hydraulic means can be passed to the play compensation element.
- the two inlets are located radially outward on a further web, which further web preferably orthogonally intersects the first web with the guide bore in plan view.
- the first channel extends obliquely through the cup tappet in front of the guide bore with the coupling means.
- the further channel can be formed directly in the other web, so that it intersects the bore of the guide bushing perpendicular to the axial line of the outer part.
- a longitudinal groove is provided at each inlet on the outer jacket of the shirt. This is to communicate with a guide bore of the cylinder head respectively cutting supply line.
- the first and second channel are constantly under Hydraulikstoffschbeetzwegung or unnecessary longitudinal grooves in the guide bore of the cylinder head.
- the hydraulic medium should preferably be passed directly to the at least one coupling means and the hydraulic clearance compensation element, dispensing with the storage spaces provided in the aforementioned prior art.
- the bottom of the outer part to contact two on both sides of the guide bush extending Quigenocken.
- a slide pack known per se or at least one slide is provided, which or which is preferably displaced in one direction via the hydraulic medium pressure and in the other direction via the force of at least one mechanical spring.
- Figure 1 is a perspective view of an inventive outer part
- Figure 2 shows a longitudinal section through the outer part along the other web
- Figure 3 is another view of the outer part with a separate ring part as a spring system
- Figure 4 shows a longitudinal section through the outer part, again in the region of the further web, obliquely from below and the
- Figure 5 shows the apparent from Figure 3 ring part.
- Figures 1 - 4 reveal an outer part 1 for a switchable bucket tappet, which is created with all its components, preferably by Metai Ispritzgie hybrid (MIM) or alternatively by investment casting.
- MIM Metai Ispritzgie hybrid
- the outer part 1 has a hollow cylindrical shirt 2, which can be arranged over its outer casing 3 in a Aufnahrnebohrung a cylinder head.
- the shirt 2 is delimited on its cam-side end 4 by a bottom 5, which is cylindrically bulged here in the cam migration direction, as a cam contact surface.
- an inner part of the switchable tappet can be arranged. This may or may not have a hydraulic lash adjuster.
- Axially below the bottom 5 extends diametrically through the outer part 1, a first web 9.
- This has a guide bore 10, in which at least one hydraulically acted upon in a direction of displacement coupling means can be arranged.
- the guide bore 10 is cut on a radial side 11 of a first channel 13 for hydraulic fluid. This goes from a first inlet 14 on the outer jacket of the shirt. 2 from and has been shown in one piece in the MIM method with.
- the first channel 13 runs here skewed by the outer part 1 in the direction of the guide bore 10th
- first inlet 14 is in fluid communication with a longitudinal groove 16 on the outer jacket 3 of the shirt 2.
- second inlet 15 has a connection with a further longitudinal groove 17.
- Each longitudinal groove 16, 17 communicates with a supply bore for hydraulic means, which intersects the guide bore of the cylinder head for the outer part 1.
- a second channel 14a passes directly through the further web 18, starting from the second inlet 15. It opens radially inward to the bore 8 and serves to supply the arranged in the inner part, not shown hydraulic ' play compensation element hydraulic center !.
- the second channel 14a has preferably also been formed during the metal injection molding process.
- a lost-motion spring or a spring assembly can be applied to this ring member 5.
- the collar 29 serves to center the lost-motion spring.
- Another essential part of the outer part 1 described here is that the bottom 5 is shown lowered outside a cam contact surface.
- This "lowering" of the bottom 5 has a stiffening effect on the entire outer part 1, so that this may be thinner if necessary.
- each inlet 14, 15 from the outer shell 3 on the bottom 5 also two tabs 23, 24 from. These "seal" the supply lines in the guide bore of the cylinder head during a plunging movement of the outer part 1 in the direction away from the cam.
- the outer part 1 thus produced preferably by metal injection molding (MIM) with integrally molded channels 13, 14a and two webs 9, 18 crossing in an imaginary extension is relatively inexpensive compared to the prior art. It can largely be dispensed with a subsequent machining or on additional measures such as welding. It is also conceivable, of course, the inner part which is to run in the guide bush 7 to represent by metal injection molding.
- MIM metal injection molding
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005017409A DE102005017409A1 (de) | 2005-04-15 | 2005-04-15 | Außenteil eines schaltbaren Tassenstößels |
| PCT/EP2006/002404 WO2006108483A1 (de) | 2005-04-15 | 2006-03-16 | Aussenteil eines schaltbaren tassenstössels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1869295A1 true EP1869295A1 (de) | 2007-12-26 |
| EP1869295B1 EP1869295B1 (de) | 2014-01-15 |
Family
ID=36660760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06723461.7A Ceased EP1869295B1 (de) | 2005-04-15 | 2006-03-16 | Aussenteil eines schaltbaren tassenstössels |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1869295B1 (de) |
| JP (1) | JP2008536046A (de) |
| KR (1) | KR101304629B1 (de) |
| CN (1) | CN100554650C (de) |
| DE (1) | DE102005017409A1 (de) |
| WO (1) | WO2006108483A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008062185A1 (de) * | 2008-12-13 | 2010-06-17 | Schaeffler Kg | Schaltbarer Tassenstößel |
| EP2937566B1 (de) * | 2014-04-22 | 2016-10-19 | Aktiebolaget SKF | Nockenstößelrollenvorrichtung, insbesondere für eine Kraftstoffeinspritzpumpe |
| EP2947285B1 (de) * | 2014-05-22 | 2017-07-12 | Aktiebolaget SKF | Mechanisches System zur Darstellung eines Nockenfolgers bzw. eines Kipphebels mit einem inneren Volumen zur Aufnahme eines Ölbades |
| DE102017109303B3 (de) | 2017-05-02 | 2018-06-21 | Schaeffler Technologies AG & Co. KG | Aktor zur Verstellung des Verdichtungsverhältnisses eines Hubkolbenmotors |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3920729A1 (de) * | 1989-06-24 | 1991-01-10 | Gmb Giesserei & Maschinenbau B | Tassenstoesselkoerper fuer ventilstoessel |
| GB9011125D0 (en) * | 1990-05-17 | 1990-07-04 | T & N Technology Ltd | Tappets |
| US5090364A (en) * | 1990-12-14 | 1992-02-25 | General Motors Corporation | Two-step valve operating mechanism |
| DE4244711A1 (de) * | 1992-04-27 | 1994-03-03 | Iav Motor Gmbh | Ventiltrieb für Ladungswechselventile von Hubkolbenbrennkraftmaschinen |
| DE4309602C2 (de) * | 1993-03-24 | 1997-01-09 | Bayerische Motoren Werke Ag | Ventilstößel für zumindest zwei Brennkraftmaschinen-Hubventile |
| DE4343876A1 (de) * | 1993-12-22 | 1995-06-29 | Schaeffler Waelzlager Kg | Stößel für den Ventiltrieb einer Brennkraftmaschine |
| DE9400453U1 (de) * | 1994-01-13 | 1994-02-24 | INA Wälzlager Schaeffler KG, 91074 Herzogenaurach | Stößel für einen Ventiltrieb einer Brennkraftmaschine |
| US5431133A (en) * | 1994-05-31 | 1995-07-11 | General Motors Corporation | Low mass two-step valve lifter |
| DE19515284A1 (de) * | 1995-04-26 | 1996-10-31 | Schaeffler Waelzlager Kg | Nockenfolger eines Ventiltriebs einer Brennkraftmaschine |
| DE19603915A1 (de) * | 1996-02-03 | 1997-08-07 | Schaeffler Waelzlager Kg | Stößel für einen Ventiltrieb einer Brennkraftmaschine |
| DE19645964A1 (de) * | 1996-11-07 | 1998-05-14 | Bayerische Motoren Werke Ag | Schaltbarer Tassenstößel für Gaswechselventile von Brennkraftmaschinen, insbesondere mit Zylinderabschaltung |
| WO1999020417A1 (en) * | 1997-10-20 | 1999-04-29 | James Buckley | Making precision castings using thixotropic materials |
| DE19801603A1 (de) * | 1998-01-17 | 1999-07-22 | Schaeffler Waelzlager Ohg | Auf unterschiedliche Hübe für wenigstens ein Gaswechselventil schaltbarer Nockenfolger eines Ventiltriebs einer Brennkraftmaschine |
| JP3535421B2 (ja) * | 1998-12-22 | 2004-06-07 | 本田技研工業株式会社 | 内燃機関の動弁装置 |
| US5979383A (en) * | 1999-04-23 | 1999-11-09 | General Motors Corporation | Rocker arm assembly lubrication |
| DE19952909B4 (de) * | 1999-11-03 | 2010-06-24 | Schaeffler Kg | Schaltbares Abstützelement |
| DE10123963A1 (de) * | 2001-05-17 | 2002-11-21 | Ina Schaeffler Kg | Stößel für einen Ventiltrieb |
| DE10212327A1 (de) * | 2001-09-11 | 2003-03-27 | Porsche Ag | Ventiltrieb für eine Brennkraftmaschine |
| KR20030048704A (ko) * | 2001-12-12 | 2003-06-25 | 현대자동차주식회사 | 고강도 반응고 알루미늄 태핏 및 그 제조 방법 |
| DE10330673A1 (de) * | 2002-08-02 | 2005-02-03 | Bayerische Motoren Werke Ag | Schwenkhebel für einen hubvariablen Ventiltrieb |
| DE10318295A1 (de) * | 2003-04-23 | 2004-11-11 | Ina-Schaeffler Kg | Schlepphebel eines Ventiltriebs einer Brennkraftmaschine |
| DE10330881A1 (de) * | 2003-07-09 | 2005-01-27 | Ina-Schaeffler Kg | Verfahren zur Herstellung eines Außenhebels eines schaltbaren Schlepphebels |
| KR20050030732A (ko) * | 2003-09-26 | 2005-03-31 | 현대자동차주식회사 | 2 스텝 가변 리프트 태핏 |
-
2005
- 2005-04-15 DE DE102005017409A patent/DE102005017409A1/de not_active Withdrawn
-
2006
- 2006-03-16 JP JP2008505753A patent/JP2008536046A/ja active Pending
- 2006-03-16 WO PCT/EP2006/002404 patent/WO2006108483A1/de not_active Ceased
- 2006-03-16 KR KR1020077023458A patent/KR101304629B1/ko not_active Expired - Fee Related
- 2006-03-16 EP EP06723461.7A patent/EP1869295B1/de not_active Ceased
- 2006-03-16 CN CNB2006800124313A patent/CN100554650C/zh not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006108483A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101160453A (zh) | 2008-04-09 |
| JP2008536046A (ja) | 2008-09-04 |
| DE102005017409A1 (de) | 2006-10-19 |
| KR20070122214A (ko) | 2007-12-28 |
| CN100554650C (zh) | 2009-10-28 |
| KR101304629B1 (ko) | 2013-09-05 |
| EP1869295B1 (de) | 2014-01-15 |
| WO2006108483A1 (de) | 2006-10-19 |
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