CN101059088A - Rocking bar used for variable air valve mechanism - Google Patents
Rocking bar used for variable air valve mechanism Download PDFInfo
- Publication number
- CN101059088A CN101059088A CNA2007101012650A CN200710101265A CN101059088A CN 101059088 A CN101059088 A CN 101059088A CN A2007101012650 A CNA2007101012650 A CN A2007101012650A CN 200710101265 A CN200710101265 A CN 200710101265A CN 101059088 A CN101059088 A CN 101059088A
- Authority
- CN
- China
- Prior art keywords
- rocking bar
- face
- cam
- end portion
- supporting surface
- 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.)
- Pending
Links
- 230000007246 mechanism Effects 0.000 title claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000002950 deficient Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement 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
- 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
- F01L13/0021—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 rocker arm ratio
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- 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
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
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- 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
- F01L13/0021—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 rocker arm ratio
- F01L13/0026—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 rocker arm ratio by means of an eccentric
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- 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
-
- 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
- F01L2301/00—Using particular materials
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The present invention proposes a swinging rod (1a, 1b) of the stroke-variable valve mechanism in the internal combustion engine, the swinging rod is provided with a supporting surface (9) which outspreads around the revolving axial cord (8) and forms the convex cylinder shape at the end side of the first bottom part (3), it is provided with a stroke transferring area (10) which is rigidly attached to the swinging rod (1a, 1b) and is used for the valve rocker at the end side of the second bottom part (6), and an head rolling surface (14) of the cam wheel is provided at the middle part (13). Therefore, the head rolling surface of the supporting surface and cam wheel is designed to be sliding surface (7, 18) which is rigidly connected to the swing rod.
Description
Technical field
The present invention relates to a kind of rocking bar of valve mechanism of the journey variable that is used for internal-combustion engine.This rocking bar has that a wraparound shaft axis extends, as to constitute dome cylindricality supporting surface in the end face side of first end portion, and have one rigidly connected, as to be used for valve rocker stroke transfer surface in the end face side of second end portion, and in intermediate portion, have on the cam and roll face with rocking bar.
Background technique
A kind of such rocking bar is learnt by being regarded as DE10235402A1 of the same type.Jian Yi rocking bar is arranged on the slide rail in the internal-combustion engine, circular arc as adjustable transmitting element of the valve mechanism of journey variable with its first end portion with being supported on a fixed-site there, and control a valve depression bar with the stroke transfer surface that extends in second end portion, this valve depression bar loads an intake valve from its that aspect.The opening process of intake valve can be adjusted changeably, by one can by form be the supporting surface rotational axis that on slide rail, moves of eccentric regulating device together with the stroke transfer surface of forming by idle stroke curved surface and stroke curved surface, make the cam stroke of the face that rolls on the loading cam be converted to the transformable rotation motion of valve depression bar.In order to reduce the friction of valve mechanism, the face that rolls on supporting surface and the cam constitutes the roller of rolling bearing on the pin in being fixed in rocking bar respectively.
As in DE10235403A1 also of the same type, advising, also can be provided with as supporting surface and to have in the roller group of the roller of supporting separately on the slide rail and on eccentric wheel.Although can be used as, described rolling contact is used for reducing in the frictional loss of valve mechanism and the single efficiently measure of member wearing and tearing, also relevant under the valve mechanism situation of the load control of the special no throttling that exist, that be used for internal-combustion engine here of described measure with some defectives.The control time deviation that intake valve is minimum is each other only allowed on the one hand this load control, thereby valve gear member must be with the highest precision and by to have only several microns tolerance range manufacturing.But in enormous quantities and at this usually under the condition of low manufacture cost, keep this member precision obviously difficult more by described rolling bearing, because each additional member that will be connected with the rocking bar matrix has strengthened the member tolerance chain that plays a decisive role for the deviation in IVO Inlet Valve Open is made a slip of the tongue journey.This specially refers to the fluctuation that is caused by tolerance of the positioning tolerance in the hole of making, bearing play that rolling bearing has tolerance and roller in the matrix of rocking bar outer diameter holds the pin that is used for roller wheel bearing in this hole.
Another defective is caused by the weight that the rocking bar that is provided with rolling bearing increases, and its mass action must be by the spring element supporting that is provided with except valve spring.Consequent reaction force has caused obviously eliminating the original friction advantage that reaches by rolling bearing on this one side.
Summary of the invention
Therefore the objective of the invention is to, avoid above-mentioned defective, and provide a kind of rocking bar thus, this rocking bar not only can making for the IVO Inlet Valve Open member tolerance that journey plays a decisive role of making a slip of the tongue corresponding to minimum accurately, and can make inexpensively, demonstrate little mass action in addition.
This purpose reaches by following measure by the present invention, that is: the face that rolls on supporting surface and/or the cam constitutes and the rigidly connected slip surface of rocking bar.The friction defective overcompensation in this wise of moderate whole valve mechanism friction, that contact adjustment with respect to rolling, feasible required precision to rocking bar can reduce expense significantly owing to the slip surface by a rigidity replaces the surface of contact with rolling bearing of additional tolerance, and because the member complexity that reduces also can reduce cost significantly, described friction can minimize by the suitable coating of reducing friction and wearing and tearing of slip surface in addition.In addition, the weight of rocking bar and thus its mass action have positive effect limit this slip surface contact area right certainly because expend, and limit its installation on rocking bar with respect to its contact for the material of the slip surface of rigidity.
Yet each slip surface also can constitute independent and member that preferred material is connected with rocking bar in combination, of the present invention about its manufacture cost and the particularly preferred expansion structure of weight thereof in, rocking bar should be made for all-in-one-piece plate forming spare.The rocking bar that also has the face that rolls on the cam of rigidity at the textural supporting surface that not only has a rigidity is for to the favourable sidewall that also has two space distances of its shape rigidity, described sidewall on first end portion by a cylindrical housings that constitutes supporting surface, constituting the end wall of stroke transfer surface by one on second end portion and interconnecting by a horizontal fishplate bar that constitutes the face that rolls on the cam at intermediate portion.This box-shaped that replaces and structure U-shaped are in addition owing to lack that rolling bearing is relative to constitute rocking bar narrowly, and on big degree, be used for it and strengthen rigidity, thereby also can save the reinforcement U-shaped folder that being used between sidewall advise in the prior art of being quoted especially.
Description of drawings
Other features of the present invention draw from following description and simplification illustrate the accompanying drawing of the embodiment of the invention.If explanation is not arranged in addition, wherein the feature that function is identical indicates identical reference character.
In the accompanying drawing:
Fig. 1 illustrates first embodiment's of rocking bar perspective view;
Fig. 2 illustrates the side view by Fig. 1 rocking bar;
Fig. 3 illustrates second embodiment's of rocking bar perspective view.
Embodiment
First embodiment by rocking bar of the present invention of the valve mechanism that is used for journey variable is disclosed in Fig. 1 and 2, so that the load of the no throttling of internal-combustion engine control.The rocking bar 1a that is made by sheet material with punching press-bending method has the sidewall 2 of two spaces, and they are interconnecting by end wall 6 by cylindrical housings 4 and on second end portion 5 on first end portion 3.One of them slip surface 7 that extends on cylindrical housings 4 is used as a supporting surface 9 with respect to the unshowned slide rail that circular arc is extended in internal-combustion engine, and be used as the same unshowned eccentric acting surface of a regulating device simultaneously, by its with the fixed-site of rotational axis 8 on slide rail, be used to change valve stroke.
The one stroke transfer surface 10 that is used for valve rocker extends on the outside of end wall 6, this valve rocker constitutes the roller valve depression bar that is bearing on the supporting member usually, this roller valve depression bar is delivered to to-and-fro motion rocking bar 1a, that be scheduled to by stroke curved surface 11 of wraparound shaft axis 8 swings on the intake valve of internal-combustion engine, and described stroke curved surface 11 connects an idle stroke curved surface 12 on stroke transfer surface 10
In addition, rocking bar 1a is loaded by a cam in this unshowned internal combustion (IC) engine camshaft by rolling face 14 on the cam in intermediate portion 13, rolls face 14 on its cam and constitutes a slip or the roller 16 of rolling bearing on the pin 15 that connects described sidewall 2 in this embodiment.
Shown in Figure 3 one second embodiment by rocking bar 1b of the present invention.This rocking bar 1b relate to equally with punching press-bending method by sheet material make but the member that constitutes of integrated type in this case.Rocking bar 1b is that with respect to the difference of rocking bar 1a not only supporting surface 19 but also rolls the slip surface 7 and 18 that face 14 constitutes rigidity on the cam that extends on the horizontal fishplate bar 17 that connects sidewall 2.
List of numerals
1a, the b rocking bar
2 sidewalls
3 first end sections
4 cylindrical housings
5 second end sections
6 end walls
7 slip surfaces
8 rotational axis
9 supporting surfaces
10 stroke transfer surfaces
11 stroke curved surfaces
12 idle stroke curved surfaces
13 intermediate portions
Roll face on 14 cams
15 pins
16 horizontal fishplate bars
17 slip surfaces
Claims (3)
1. the rocking bar of the valve mechanism of a journey variable that is used for internal-combustion engine, this rocking bar (1a, 1b) have in the end face side of first end portion (3) that a wraparound shaft axis (8) extends, constitute the supporting surface (9) of dome cylindricality, the end face side of second end portion (6) have one with rocking bar (1a, 1b) rigidly connected, the stroke transfer surface (10) that is used for valve rocker, and in intermediate portion (13), has a face (14) that rolls on the cam, it is characterized in that, rolling face (14) on supporting surface (9) and/or the cam is designed to and rocking bar (1a, 1b) rigidly connected slip surface (7,18).
2. by the described rocking bar of claim 1, it is characterized in that rocking bar (1b) is made for all-in-one-piece plate forming spare.
3. by the described rocking bar of claim 2, it is characterized in that, rocking bar (1b) has the sidewall (2) of two spaces, described sidewall the cylindrical housings (4) of first end portion by constituting supporting surface (9), second end portion by constituting stroke transfer surface (10) end wall (6) and interconnect at the horizontal fishplate bar (17) that intermediate portion rolls face (4) on by the formation cam.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102006018511.0 | 2006-04-21 | ||
| DE102006018511A DE102006018511A1 (en) | 2006-04-21 | 2006-04-21 | Rocker arm for a variable-stroke valve train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101059088A true CN101059088A (en) | 2007-10-24 |
Family
ID=38255020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101012650A Pending CN101059088A (en) | 2006-04-21 | 2007-04-20 | Rocking bar used for variable air valve mechanism |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1847690B1 (en) |
| CN (1) | CN101059088A (en) |
| DE (1) | DE102006018511A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828793A (en) * | 2011-06-15 | 2012-12-19 | 谢夫勒科技股份两合公司 | Intermediate lever |
| CN103147818A (en) * | 2013-02-28 | 2013-06-12 | 长城汽车股份有限公司 | Drive device with variable valve lift, engine and vehicle |
| CN103161538A (en) * | 2013-02-28 | 2013-06-19 | 长城汽车股份有限公司 | Variable valve lift driving device rocker mechanism used for engine |
| CN107956527A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | Intermediate push rod of variable valve driving device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011003898B4 (en) | 2011-02-10 | 2021-09-09 | Schaeffler Technologies AG & Co. KG | Intermediate lever |
| DE102013217298A1 (en) | 2013-08-30 | 2015-03-05 | Schaeffler Technologies Gmbh & Co. Kg | Rocker arm for a valve train of an internal combustion engine of a vehicle and method for producing a rocker arm |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1178655A (en) * | 1956-07-06 | 1959-05-13 | Austin Motor Co Ltd | Mechanism for controlling overhead valves of internal combustion engines |
| DE1845656U (en) * | 1959-02-03 | 1962-01-25 | Daimler Benz Ag | DEVICE FOR OPERATING THE VALVES IN COMBUSTION ENGINE. |
| DE2819356A1 (en) * | 1978-05-03 | 1979-11-08 | Bayerische Motoren Werke Ag | ROCKING LEVER FOR THE VALVE DRIVE OF COMBUSTION ENGINE |
| US6199527B1 (en) * | 1998-03-12 | 2001-03-13 | Nsk Ltd. | Sheet metal rocker arm, manufacturing method thereof, cam follower with said rocker arm, and assembling method thereof |
| DE10017441A1 (en) * | 2000-04-07 | 2001-10-11 | Bayerische Motoren Werke Ag | Device for stroke adjustment of a gas exchange valve in the cylinder head of an internal combustion engine |
| DE10205216B4 (en) * | 2002-02-08 | 2006-04-27 | Robert Bosch Gmbh | Actuator with variable stroke for an oscillating component |
| JP2003239713A (en) * | 2002-02-18 | 2003-08-27 | Toyota Motor Corp | Valve mechanism for internal combustion engine |
| KR20060038358A (en) * | 2003-03-18 | 2006-05-03 | 제너럴 모터즈 코오포레이션 | Engine valve actuator assembly |
| DE10316990A1 (en) * | 2003-04-11 | 2004-10-28 | Rolf Jung | Fully-variable valve operating gear for vehicle engine includes cams with inclined running surfaces operated in longitudinal direction by adjuster |
| US6684832B1 (en) * | 2003-04-28 | 2004-02-03 | Roberto Marcelo Codina | Oscillating camshaft controlled valve operating device |
| JP2004353643A (en) * | 2003-05-26 | 2004-12-16 | Zenji Ishikawa | Valve mechanism of four-cycle internal combustion engine |
| JP4237643B2 (en) * | 2003-08-25 | 2009-03-11 | ヤマハ発動機株式会社 | Valve mechanism of internal combustion engine |
| JP4255878B2 (en) * | 2004-05-07 | 2009-04-15 | ダイハツ工業株式会社 | Valve mechanism in internal combustion engine |
| US7089899B1 (en) * | 2005-07-11 | 2006-08-15 | Eaton Corporation | Stamped two-step rocker arm component |
-
2006
- 2006-04-21 DE DE102006018511A patent/DE102006018511A1/en not_active Withdrawn
-
2007
- 2007-04-11 EP EP07105922A patent/EP1847690B1/en not_active Expired - Fee Related
- 2007-04-20 CN CNA2007101012650A patent/CN101059088A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828793A (en) * | 2011-06-15 | 2012-12-19 | 谢夫勒科技股份两合公司 | Intermediate lever |
| CN103147818A (en) * | 2013-02-28 | 2013-06-12 | 长城汽车股份有限公司 | Drive device with variable valve lift, engine and vehicle |
| CN103161538A (en) * | 2013-02-28 | 2013-06-19 | 长城汽车股份有限公司 | Variable valve lift driving device rocker mechanism used for engine |
| CN103161538B (en) * | 2013-02-28 | 2015-04-22 | 长城汽车股份有限公司 | Variable valve lift driving device rocker mechanism used for engine |
| CN103147818B (en) * | 2013-02-28 | 2015-05-06 | 长城汽车股份有限公司 | Drive device with variable valve lift, engine and vehicle |
| CN107956527A (en) * | 2016-10-18 | 2018-04-24 | 舍弗勒技术股份两合公司 | Intermediate push rod of variable valve driving device |
| CN107956527B (en) * | 2016-10-18 | 2022-02-25 | 舍弗勒技术股份两合公司 | Intermediate push rod of variable valve driving device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1847690A2 (en) | 2007-10-24 |
| EP1847690B1 (en) | 2013-01-16 |
| EP1847690A3 (en) | 2010-01-27 |
| DE102006018511A1 (en) | 2007-10-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |