CN103502583A - Intermediate lever - Google Patents
Intermediate lever Download PDFInfo
- Publication number
- CN103502583A CN103502583A CN201280021514.4A CN201280021514A CN103502583A CN 103502583 A CN103502583 A CN 103502583A CN 201280021514 A CN201280021514 A CN 201280021514A CN 103502583 A CN103502583 A CN 103502583A
- Authority
- CN
- China
- Prior art keywords
- lever
- positive end
- cam
- lug boss
- stroke
- 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 abstract description 4
- 239000000463 material Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000005242 forging Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000003801 milling Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 238000005245 sintering Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000470 constituent Substances 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 2
- 238000010923 batch production Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 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
- 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
- F01L13/0063—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
-
- 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
- F01L13/0063—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
- F01L2013/0068—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 by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot with an oscillating cam acting on the valve of the "BMW-Valvetronic" type
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Transmission Devices (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
An intermediate lever (1) for a variable valve gear of an internal combustion engine is proposed, said intermediate lever being present in the form of a solid, bar-like compact block, wherein a supporting surface (3) for a slotted guide track and a run-on surface (4) for a cam disc are applied in the region of one end (2), wherein a surface (6) for the variable lifting transfer of a cam onto a tap of a follow-on member sits at a further end (5), wherein a counter-running surface (8) for a lifting cam runs in a section (7) between the ends (2, 5), and wherein the run-on and counter-running surfaces (4, 8) and also the surface (6) for the variable lifting transfer are sliding surfaces.
Description
Technical field
The present invention relates to a kind of middle lever of the variable stigmatic opening transmission device for internal-combustion engine, wherein, in the zone of a positive end, implement for the supporting surface of chute guide rail and the abutment facing of implementing to be used for cam disk, wherein, in another positive end, and extend in the section between end for the pairing moving surface of stroke cam for the face of crawl section that the stroke changeable of cam is delivered to follower.
Background technique
In the middle of such, lever is known from Fig. 5, Fig. 6 of DE 10 2,006 018 512 A1.This centre lever has the sidewall of two beam types.On a positive end, these sidewalls surround the roller of three rolling bearings altogether, and two rollers wherein are used as to support rollers, for the pairing campaign on the chute guide rail, and the roller between these two rollers are used as to abutment facing, for cam disk.At centre portion, middle lever has the roller of additional rolling bearing as matching moving surface for stroke cam.On another positive end, the sidewall stroke transfer surface that these sidewalls are connected that is used to form close to each other.
The shortcoming of above-mentioned design proposal is the structure of its more complicated.Middle lever with expensive, that by a plurality of process step, is formed and so the mode that remains expensive bending ram forming process in batch production by the sheet material manufacture.In the in the end stage, four rollers are relative expensive with the combination of support equally.Because sidewall externally surrounds roller, so middle lever is likely made widely.
Summary of the invention
Therefore, the present invention is based on following task, a kind of middle lever of the above-mentioned type is provided, eliminate whereby pointed shortcoming.Particularly, should design a kind of can be with the middle lever of manufacturing very at low cost and can install simply.
According to the present invention, this task be done in such a way that, middle lever is the compact piece of the similar beam type that at least roughly seals, and abutment facing and pairing moving surface and be slip surface for the face of stroke changeable transmission.
Thus, provide a kind of middle lever that there is no above-mentioned shortcoming.This centre lever metal slabs that for example used thickness is preferably the width with middle lever simply carry out punching or manufacture with forging method.This centre lever also can be as an alternative in the mode (milling is like that) of cutting or at least to cut accurately machined mode or to manufacture by casting/sintering.In addition, middle lever also can be made by section bar.Also can consider metal powder injection molded (MIM) structural scheme.Middle lever is therefore as simple block or exist as solid member.Above-mentioned brake forming process is omitted.
In addition, owing to having cancelled combined roller, middle lever make relative narrower and can manufacture with low-down cost in the middle of lever.At least one in existing slip surface or these slip surfaces can also for example stand independent wear resistance processing by being coated with trowel coating or heat treatment.
Middle lever can find application at the full variable stigmatic opening transmission device of controlling for the non-air throttle load, as the middle lever used under " Valvetronic " sign by Bavaria engine shop.
The protuberance that stretches out in outer wall an end can a change programme according to the present invention integrally be connected with middle lever, perhaps can as the member of being fixed independently, exist according to another design proposal, this protuberance be suggested to as supporting surface for the chute guide rail otherwise as abutment facing for cam disk.For the design proposal of integral type, compacting, impact extrusion, forging etc. or to also have the cutting manufacture be applicable.For multipart design proposal, consider to engage, push, weld, spin, the method such as ca(u)lk.Free end separately also can start to stretch out to both sides from outer wall, and independently strengthening member is on these free ends, or independently member utilizes during free end reinforces in the hole of the outer wall of middle lever.
All faces (abutment facing and pairing moving surface, the face transmitted for stroke changeable) can be also smooth or be convex in case of necessity.
In the change programme situation of the suggestion according to the present invention, in this scheme, be present in the both sides of middle lever for the supporting surface of chute guide rail on a positive end, this makes middle lever have good especially anti-tipping property.
What the professional workforce was not difficult to recognize in addition is, middle lever has a kind of very simple, elongated moulding by following structural scheme, in this structural scheme for the abutment facing of cam disk otherwise the supporting surface for the chute guide rail lug boss (Auswoelbung) as the front of the lever material a positive end, this produces very favorable impact to cost in batch production.Equally also be suitable for cam pairing moving surface, the about medium position in the middle of this cam pairing moving surface is preferably placed between the positive end of lever.
Face for variable transmission cam stroke is comprised of zero stroke range and stroke range in another end.In the middle of this face integrally is fixed on lever, and this face extends on the bottom side of extending portion, and this extending portion is arciform along the lever swing direction and stretches out to both sides.In case of necessity, also can consider change programme or following this design proposal with joint method in this zone, only stretch out an extending portion in this design proposal.
Preferably, in order to guide the cam return spring to middle lever generation effect, contact pin should integrally be stretched out from upside or the front, end of extending portion.These contact pin can for example be manufactured by compacting, bending or cutting simply.
The accompanying drawing explanation
With reference to the accompanying drawings the present invention is set forth.Wherein:
The stereogram of the first change programme of lever in the middle of Fig. 1 illustrates; And
The stereogram of the second change programme of lever in the middle of Fig. 2 illustrates.
Embodiment
Show a kind of middle lever 1 of the variable stigmatic opening transmission device for internal-combustion engine.This centre lever has a kind of geometrical shape of similar beam type of sealing, and is formed by steel plate punched.
According to Fig. 1, middle lever 1 has the supporting surface 3 for the chute guide rail in the zone of positive end 2, and this supporting surface is integrally fixed and existed as slip surface.This supporting surface 3 is comprised of two similar fan-shaped protuberances 10, and these protuberances 10 are positioned on the outer wall 9 that is parallel to the extension of lever swing direction at 2 places, a positive end.These protuberances 10 have respectively superposed peripheral part section 11 for the chute guide rail against.In addition, be highlighted section 10 abutment facing for cam disk 4 that surround and that be configured to slip surface and extend on this positive end 2, this abutment facing 4 exceeds protuberance 10 and as the lug boss 12 in the front of lever material and exist.
The face 6 of integrally being fixed mediates on another positive end 5 of lever 1, and this face is for being delivered to the stroke changeable of cam the crawl section of follower (draw-bar).This face 6 is positioned on the bottom side 18 of extending portion 16,17 and is manufactured to equally slip surface, at this extending portion, along the lever swing direction, to both sides, stretches out.Need to know, two contact pin of integrally being fixed 20 are stretched out on the front, end 19 of extending portion 16.The end of bootable cam return spring between these two contact pin 20, in the middle of this cam return spring makes, lever 1 loads.
Be formed on the outer wall 15 of middle lever 1 for the pairing moving surface 8 of stroke cam, this outer wall extends transverse to lever swing direction ground on middle section 7, and this pairing moving surface being made into to the material lug boss of integrally being fixed, this lug boss does not exceed outer wall 15.Again realize the slip crawl section for stroke cam.
As can be seen from Figure 2, be positioned at the outer wall 9 of middle lever 1 at 2 places, a positive end for the abutment facing 4 of cam disk, and this abutment facing is comprised of two opposed similar fan-shaped protuberances 13, be useful on the direct superposed peripheral part section 14 against cam disk on protuberance 13.Peripheral part section 14 surrounds for the supporting surface 3 of chute guide rail and exceeds this supporting surface 3, and this supporting surface is present on a positive end 2 as the lug boss 12 of the material of middle lever 1.
Reference numerals list
Claims (10)
1. the middle lever (1) of the variable stigmatic opening transmission device for internal-combustion engine, wherein, the abutment facing (4) that is provided for the supporting surface (3) of chute guide rail and is provided for cam disk in the zone of a positive end (2), wherein, for the cam stroke changeable is delivered to the face (6) of the crawl section of follower in another positive end (5), and for the pairing moving surface (8) of stroke cam in described positive end (2, 5) in the section between (7), extend, it is characterized in that, in the middle of described, lever (1) is the compact piece of the similar beam type that at least roughly seals, and described abutment facing and described pairing moving surface (4, 8) and the described face (6) transmitted for stroke changeable be slip surface.
2. lever in the middle of according to claim 1, it is characterized in that, at least one of described abutment facing and described pairing moving surface (4,8) and the described face (6) transmitted for stroke changeable or these faces is the constituent element of the integral type of described middle lever.
3. lever in the middle of according to claim 1, it is characterized in that, at least one of described abutment facing and described pairing moving surface (4,8) and the described face (6) transmitted for stroke changeable or these faces exists as member independently with respect to lever (1) in the middle of described.
4. according to the described middle lever of claim 2 or 3, it is characterized in that, two opposed similar circles or similar fan-shaped protuberance (10) in a described positive end (2), locate to be positioned at described in the middle of lever (1) to be parallel to the outer wall (9) that the lever swing direction extends upper, directly on the peripheral part section (11) of a described positive end (2), be formed with the supporting surface (3) (referring to Fig. 1) for the chute guide rail at described protuberance.
5. lever in the middle of according to claim 4, it is characterized in that, be present in a described positive end (2) for the abutment facing (4) of cam disk as the lug boss (12) of the cylinder segmentation of the material of lever (1) in the middle of described, wherein, described protuberance (10) is placed in described lug boss side, and described lug boss (12) exceeds described protuberance.
6. according to the described middle lever of claim 2 or 3, it is characterized in that, two opposed similar circles or similar fan-shaped protuberance (13) in a positive end (2), locate to be positioned at described in the middle of lever (1) to be parallel to the outer wall (9) that the lever swing direction extends upper, directly on the peripheral part section (14) of a described positive end (2), be formed with the described abutment facing for described cam disk (4) (referring to Fig. 2) at described protuberance.
7. lever in the middle of according to claim 6, it is characterized in that, be present in a described positive end (2) for the supporting surface (3) of chute guide rail as the lug boss (12) of the cylinder segmentation of the material of lever (1) in the middle of described, wherein, described protuberance (13) is placed in described lug boss (12) side, and exceeds described lug boss.
8. lever in the middle of according to claim 1, it is characterized in that, the described moving surface of the pairing for described stroke cam (8) is formed on the outer wall (15) extended transverse to the lever swing direction of described middle lever (1), and, described pairing moving surface otherwise be manufactured to described in the middle of lever (1) be parallel to the material lug boss that the outer wall (9) that extends on lever swing direction ground exists with flushing, or be manufactured to by described transverse to the lever swing direction the outer wall (15) of extension be the material lug boss that wing is widened.
9. lever in the middle of according to claim 1, is characterized in that, described in the middle of lever (1) by the chipless method for example punching press/forging/casting/sintering/metal powder injection molded (MIM) or by cutting method for example milling manufacture.
10. lever in the middle of according to claim 1, it is characterized in that, for the described face (6) transmitted for stroke changeable of upper formation in described another positive end (9), described another positive end (5) has the extending portion (16 stretched out along the lever swing direction in both sides, 17), at described extending portion, the described face (6) transmitted for stroke changeable is located to have in public bottom side (18), wherein, at described extending portion (16, two contact pin that integrally connected (20) are stretched out at the end of one of them extending portion 17) positive (19) or upside place, the end of bootable cam return spring between described contact pin, described cam return spring loads described middle lever (1).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011075236.6 | 2011-05-04 | ||
| DE102011075236A DE102011075236A1 (en) | 2011-05-04 | 2011-05-04 | intermediate lever |
| PCT/EP2012/052197 WO2012150052A1 (en) | 2011-05-04 | 2012-02-09 | Intermediate lever |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103502583A true CN103502583A (en) | 2014-01-08 |
| CN103502583B CN103502583B (en) | 2016-08-17 |
Family
ID=45592383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280021514.4A Expired - Fee Related CN103502583B (en) | 2011-05-04 | 2012-02-09 | Intermediate lever |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN103502583B (en) |
| DE (1) | DE102011075236A1 (en) |
| WO (1) | WO2012150052A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132584A (en) * | 2014-04-02 | 2016-11-16 | 舍弗勒技术股份两合公司 | For the method manufacturing intermediate bar |
| CN107956529A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | The intermediate lever of variable stigmatic opening transmission device |
| CN110719872A (en) * | 2017-06-06 | 2020-01-21 | 蓬塞有限公司 | Construction in a machine and forestry machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012222373A1 (en) * | 2012-12-06 | 2014-06-12 | Schaeffler Technologies Gmbh & Co. Kg | intermediate lever |
| DE102020121201A1 (en) | 2020-08-12 | 2022-02-17 | Schaeffler Technologies AG & Co. KG | Intermediate lever for a variable-stroke valve drive of an internal combustion engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1143118A2 (en) * | 2000-04-07 | 2001-10-10 | Bayerische Motoren Werke Aktiengesellschaft | Device for varying the valve lift in an engine cylinder head |
| WO2004088099A1 (en) * | 2003-03-29 | 2004-10-14 | Boesl Flierl Gerlinde | Variable valve lift control system for a combustion engine with underneath camshaft |
| EP1496211A1 (en) * | 2003-07-08 | 2005-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Rocker arm for a variable lift valve drive |
| WO2005052326A1 (en) * | 2003-10-29 | 2005-06-09 | Ricardo Uk Limited, | Engine valvegear |
| EP1847691A2 (en) * | 2006-04-21 | 2007-10-24 | Schaeffler KG | Roller element for a pivotable machine part |
| US20090151678A1 (en) * | 2007-12-14 | 2009-06-18 | Hyundai Motor Company | Variable valve lift apparatus |
-
2011
- 2011-05-04 DE DE102011075236A patent/DE102011075236A1/en not_active Withdrawn
-
2012
- 2012-02-09 WO PCT/EP2012/052197 patent/WO2012150052A1/en active Application Filing
- 2012-02-09 CN CN201280021514.4A patent/CN103502583B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1143118A2 (en) * | 2000-04-07 | 2001-10-10 | Bayerische Motoren Werke Aktiengesellschaft | Device for varying the valve lift in an engine cylinder head |
| WO2004088099A1 (en) * | 2003-03-29 | 2004-10-14 | Boesl Flierl Gerlinde | Variable valve lift control system for a combustion engine with underneath camshaft |
| EP1496211A1 (en) * | 2003-07-08 | 2005-01-12 | Bayerische Motoren Werke Aktiengesellschaft | Rocker arm for a variable lift valve drive |
| WO2005052326A1 (en) * | 2003-10-29 | 2005-06-09 | Ricardo Uk Limited, | Engine valvegear |
| EP1847691A2 (en) * | 2006-04-21 | 2007-10-24 | Schaeffler KG | Roller element for a pivotable machine part |
| US20090151678A1 (en) * | 2007-12-14 | 2009-06-18 | Hyundai Motor Company | Variable valve lift apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106132584A (en) * | 2014-04-02 | 2016-11-16 | 舍弗勒技术股份两合公司 | For the method manufacturing intermediate bar |
| CN107956529A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | The intermediate lever of variable stigmatic opening transmission device |
| CN107956529B (en) * | 2016-10-18 | 2021-08-24 | 舍弗勒技术股份两合公司 | Intermediate lever of variable valve gear |
| CN110719872A (en) * | 2017-06-06 | 2020-01-21 | 蓬塞有限公司 | Construction in a machine and forestry machine |
| US11273880B2 (en) | 2017-06-06 | 2022-03-15 | Ponsse Oyj | Forest machine |
| CN110719872B (en) * | 2017-06-06 | 2022-04-15 | 蓬塞有限公司 | Construction in a machine and forestry machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012150052A1 (en) | 2012-11-08 |
| CN103502583B (en) | 2016-08-17 |
| DE102011075236A1 (en) | 2012-11-08 |
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| ASS | Succession or assignment of patent right |
Owner name: SCHAEFFLER FIFTH INVESTMENT MANAGEMENT GMBH + CO., Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG Effective date: 20150723 |
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Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG TO: SCHAEFFLER TECHNOLOGY GMBH + CO. KG Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER FIFTH INVESTMENT MANAGEMENT GMBH + CO., KG TO: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG Free format text: CORRECT: ADDRESS; FROM: |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20150723 Address after: German Herzogenaurach Applicant after: Fifth Schaeffler investment management GmbH & Co.KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES AG & CO. KG |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 |