EP2013450A1 - Schaltbarer schlepphebel eines ventiltriebs einer brennkraftmaschine - Google Patents
Schaltbarer schlepphebel eines ventiltriebs einer brennkraftmaschineInfo
- Publication number
- EP2013450A1 EP2013450A1 EP07727963A EP07727963A EP2013450A1 EP 2013450 A1 EP2013450 A1 EP 2013450A1 EP 07727963 A EP07727963 A EP 07727963A EP 07727963 A EP07727963 A EP 07727963A EP 2013450 A1 EP2013450 A1 EP 2013450A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- valve
- arms
- drag
- gas exchange
- 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
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
- F01L1/18—Rocking arms or levers
- F01L1/185—Overhead end-pivot rocking arms
-
- 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
Definitions
- the invention relates to a switchable rocker arm of a valve train of an internal combustion engine, with an outer lever which includes an inner lever with its arms, which components pivot relative to each other on a common axis applied to a valve end and the inner lever at a bottom at the valve end Plant for a gas exchange valve and at the other end has a complementary surface for storage on a head of a support element, wherein the outer and inner levers are selectively connectable via coupling means to achieve a large valve lift, wherein when decoupling a small or O-valve stroke can be displayed, at least the outer lever has on its upper side at least one contact surface for a lifting cam and wherein the system is bounded laterally by two projecting from the cam follower in the valve direction guide plates for the gas exchange valve.
- the object of the invention is therefore to provide a switchable drag lever of the aforementioned type, in which the cited disadvantages are eliminated.
- the guide tabs emanate from the underside of the outer lever.
- these tabs should be integrally formed with the inner lever and their outer sides are aligned with outer surfaces of the arms of the outer lever.
- the guide tabs may be formed on the outer lever as separate components and connected by a suitable connection method such as welding, joining, etc. with the outer lever.
- the inner lever and thus the entire drag lever can be made narrower at least at the valve end.
- less space is required, so that a subsequent installation in cramped cylinder head concepts is possible.
- the total mass of the tow hebeis can be lowered.
- the moment of inertia is reduced compared to previous versions. Since the elimination of the guide tabs on the inner lever, the system for the gas exchange valve is virtually "open", a processing of this area is much easier.
- lever parts can be produced by punching and bending, for example, from sheet steel / steel strip, wherein the projecting guide straps can be punched out or bent in one operation.
- the axis with stumps at both ends protrudes beyond the outer surfaces of the arms of the outer lever and that precisely at this projecting area at least one Lost Motion spring as a torsion leg spring in per se known Way is applied.
- This may be another contribution towards “narrowing" the rocker arm on its valve side (as compared to incorporating the lost-motion springs about the axis between outer surfaces of the inner lever and inner sides of the arms of the outer lever or generally within the arms of the outer lever ).
- the contact surfaces for the Quhubnocken on the outer lever are designed as projecting from the upper sides outwardly projecting collar, which thus represent a sliding surface as a contact partner.
- a roll can be applied here in each case.
- the inner lever may have a role as a contact surface.
- a sliding surface can also be applied here.
- outer lever box-like so that it is connected by a respective double-ended crossbar.
- This training has advantages in terms of stiffness and stability of the outer lever.
- the arms of the outer lever are connected in the region of the other end (support element side) by a cross bar, this can be under the handles for the coupling case of a longitudinally extending from the inner lever slide as a coupling means.
- This slide extends above the complementary surface of the inner lever for the Ab micle- ment.
- the rocker arms parts or at least one of the arms (possibly except for an insert with the complementary surface) of the drag lever can also be made by casting.
- a lightweight material such as plastic, which is optionally fiber or particle reinforced.
- a particularly narrow-built rocker arm is present when dispensed to the aforementioned collar, which protrude from the top of the arms, and thus only the width of the top of the arms is used as a cam contact surface.
- Figure 2 shows the drag lever of Figure 1, partially cut and from another perspective.
- a switchable drag lever 1 of a valve train of an internal combustion engine This consists of a box-like outer lever 2 with two arms 3.
- the arms 3 are connected at a valve-side end 5 and at an opposite other end 9 by a respective cross bow 17, 18.
- the outer lever 2 includes an inner lever 4, wherein both levers 2, 4 are pivotally movable relative to each other. For this purpose, they run on an axis 6, which is applied approximately in the area above a gas exchange valve 8a.
- the axis 6 projects beyond a respective stump 15 outer surfaces 14 of the arms 3 of the outer lever 2. Exactly in this area, each stump 15 can be surrounded by a rotary leg spring o. The like.
- a lost motion spring in a conventional manner ,
- the inner lever 4 has in the region of the valve-side end 5 on a lower side 7 a system 8 for the gas exchange valve 8a.
- a dome-shaped here complementary surface 10 for storage on a head of a support element.
- This complementary surface 10 may be provided in the inner lever 4 is a hydraulically displaceable in at least one direction slide as coupling means.
- the inner lever 4 has a roller as a contact surface 19 for a low-lift cam. This is flanked on both sides by sliding surfaces as contact surfaces 1 1 on tops 10a of the arms 3 of the outer lever 2.
- the contact surfaces 1 1 are formed as outwardly projecting, thin-walled longitudinal collar, which are preferably integrally connected to the outer lever 2. Run against these contact surfaces 1 1 respectively adjhubnocken.
- the outer surfaces 14 of the arms 3 of the outer lever 2 are stepped. In the area of the valve-side end 5, they have their smallest thickness. Behind the axis 6, viewed in the direction of the other end 9, the outer surfaces 14 thicken each via a step 16. As shown in more detail in FIG. 2, the respective step 16 encloses the corresponding stump 15 in a half-shell-like manner at a small distance.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74531706P | 2006-04-21 | 2006-04-21 | |
PCT/EP2007/053495 WO2007122105A1 (de) | 2006-04-21 | 2007-04-11 | Schaltbarer schlepphebel eines ventiltriebs einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2013450A1 true EP2013450A1 (de) | 2009-01-14 |
EP2013450B1 EP2013450B1 (de) | 2013-06-19 |
Family
ID=38222161
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07727963.6A Expired - Fee Related EP2013450B1 (de) | 2006-04-21 | 2007-04-11 | Schaltbarer schlepphebel eines ventiltriebs einer brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
US (1) | US8132551B2 (de) |
EP (1) | EP2013450B1 (de) |
WO (1) | WO2007122105A1 (de) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9708942B2 (en) * | 2010-03-19 | 2017-07-18 | Eaton Corporation | Rocker arm assembly and components therefor |
US20190309663A9 (en) | 2008-07-22 | 2019-10-10 | Eaton Corporation | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US9581058B2 (en) | 2010-08-13 | 2017-02-28 | Eaton Corporation | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US9938865B2 (en) | 2008-07-22 | 2018-04-10 | Eaton Corporation | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US10415439B2 (en) | 2008-07-22 | 2019-09-17 | Eaton Intelligent Power Limited | Development of a switching roller finger follower for cylinder deactivation in internal combustion engines |
US9228454B2 (en) | 2010-03-19 | 2016-01-05 | Eaton Coporation | Systems, methods and devices for rocker arm position sensing |
US8434440B2 (en) * | 2009-06-01 | 2013-05-07 | Schaeffler Technologies AG & Co. KG | Switchable finger lever |
US9194261B2 (en) | 2011-03-18 | 2015-11-24 | Eaton Corporation | Custom VVA rocker arms for left hand and right hand orientations |
US10087790B2 (en) | 2009-07-22 | 2018-10-02 | Eaton Corporation | Cylinder head arrangement for variable valve actuation rocker arm assemblies |
US11181013B2 (en) | 2009-07-22 | 2021-11-23 | Eaton Intelligent Power Limited | Cylinder head arrangement for variable valve actuation rocker arm assemblies |
US8733311B2 (en) * | 2010-02-12 | 2014-05-27 | Schaeffler Technologies AG & Co. KG | Switchable roller finger follower |
DE102010010733A1 (de) * | 2010-03-09 | 2011-09-15 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbarer Schlepphebel |
US9874122B2 (en) | 2010-03-19 | 2018-01-23 | Eaton Corporation | Rocker assembly having improved durability |
US9885258B2 (en) | 2010-03-19 | 2018-02-06 | Eaton Corporation | Latch interface for a valve actuating device |
US8286600B2 (en) * | 2010-03-22 | 2012-10-16 | GM Global Technology Operations LLC | Engine having variable lift valvetrain |
US8286599B2 (en) * | 2010-03-22 | 2012-10-16 | GM Global Technology Operations LLC | Engine having variable lift valvetrain |
US8584630B2 (en) * | 2010-03-30 | 2013-11-19 | Schaeffler Technologies AG & Co. KG | Switchable roller finger follower assembly |
US8627796B2 (en) * | 2011-04-21 | 2014-01-14 | Eaton Corporation | Pivot foot for deactivating rocker arm |
US20130186358A1 (en) * | 2012-01-23 | 2013-07-25 | Schaeffler Technologies AG & Co. KG | Roller finger follower with swivelable valve pallet |
DE112015000034T5 (de) | 2014-03-03 | 2015-11-19 | Eaton Corporation | Ventilbetätigungsvorrichtung und Verfahren zu deren Herstellung |
CN107208500A (zh) * | 2015-01-28 | 2017-09-26 | 伊顿公司 | 具有另外的分立气门动作的轴向凸轮移位气门组件 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5544626A (en) * | 1995-03-09 | 1996-08-13 | Ford Motor Company | Finger follower rocker arm with engine valve deactivator |
US5615647A (en) | 1995-03-28 | 1997-04-01 | Eaton Corporation | Latch assembly for a valve control system |
US6591798B2 (en) * | 2001-12-17 | 2003-07-15 | Delphi Technologies, Inc. | Variable valve actuation assembly for an internal combustion engine |
US6668779B2 (en) | 2002-05-08 | 2003-12-30 | Delphi Technologies, Inc. | Two-step finger follower rocker arm assembly |
DE10220904B4 (de) * | 2002-05-10 | 2005-04-07 | Meta Motoren- Und Energie-Technik Gmbh | Vorrichtung zum Verstellen des Hubs eines von einer Nockenwelle betätigten Ventils |
DE10257705A1 (de) * | 2002-12-11 | 2004-06-24 | Ina-Schaeffler Kg | Schlepphebel eines Ventiltriebs einer Brennkraftmaschine |
DE10318295A1 (de) | 2003-04-23 | 2004-11-11 | Ina-Schaeffler Kg | Schlepphebel eines Ventiltriebs einer Brennkraftmaschine |
DE102004029555A1 (de) | 2004-06-18 | 2006-01-05 | Ina-Schaeffler Kg | Schaltbarer Schlepphebel eines Ventiltriebs einer Brennkraftmaschine |
US6925978B1 (en) * | 2004-08-24 | 2005-08-09 | Delphi Technologies, Inc. | Two-step roller finger cam follower having angled lock pin |
US7308872B2 (en) * | 2004-12-30 | 2007-12-18 | Delphi Technologies, Inc. | Method and apparatus for optimized combustion in an internal combustion engine utilizing homogeneous charge compression ignition and variable valve actuation |
US20070113813A1 (en) * | 2005-11-21 | 2007-05-24 | Lalone Barry G | Two-step rocker arm having roller element cam followers |
US7484487B2 (en) * | 2005-11-21 | 2009-02-03 | Eaton Corporation | Dual lift rocker arm latch mechanism and actuation arrangement therefor |
-
2007
- 2007-04-11 US US12/282,706 patent/US8132551B2/en not_active Expired - Fee Related
- 2007-04-11 WO PCT/EP2007/053495 patent/WO2007122105A1/de active Application Filing
- 2007-04-11 EP EP07727963.6A patent/EP2013450B1/de not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007122105A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20090064954A1 (en) | 2009-03-12 |
WO2007122105A1 (de) | 2007-11-01 |
EP2013450B1 (de) | 2013-06-19 |
US8132551B2 (en) | 2012-03-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2013450B1 (de) | Schaltbarer schlepphebel eines ventiltriebs einer brennkraftmaschine | |
EP1785595B1 (de) | Schaltbarer Schlepphebel eines Ventiltriebs einer Brennkraftmaschine | |
DE102005037052B4 (de) | Schaltbarer Schlepphebel eines Ventiltriebs einer Brennkraftmaschine | |
EP1616082B1 (de) | Schlepphebel eines ventiltriebs einer brennkraftmaschine | |
DE102004007766A1 (de) | Schlepphebel eines Ventiltriebs einer Brennkraftmaschine | |
DE4336360C2 (de) | Kipphebel zur Betätigung von zwei Ventilen | |
WO2008037663A2 (de) | Schaltbarer schlepphebel eines ventiltriebs einer brennkraftmaschine | |
DE102010015719A1 (de) | Schaltbarer Schlepphebel für einen Ventiltrieb einer Brennkraftmaschine | |
DE102005048984A1 (de) | Schaltbarer Schlepphebel | |
DE10330881A1 (de) | Verfahren zur Herstellung eines Außenhebels eines schaltbaren Schlepphebels | |
DE102009035531A1 (de) | Schaltbarer Schlepphebel | |
DE10226821A1 (de) | Schlepphebel eines Ventiltriebs einer Brennkraftmaschine | |
DE102012213662A1 (de) | Kipphebel | |
WO2004079164A1 (de) | Schlepphebel eines ventiltriebs einer brennkraftmaschine | |
DE102004041231A1 (de) | Verbindungselement zur verliersicheren Halterung eines hebelartigen Nockenfolgers | |
DE102009056367A1 (de) | Baueinheit für einen Ventiltrieb einer Brennkraftmaschine | |
WO1999025958A1 (de) | Spanlos geformter schlepphebel | |
WO2003042510A1 (de) | Schlepphebel eines ventiltriebs einer brennkraftmaschine | |
WO2014071926A1 (de) | Blechkipphebel | |
DE102012204727A1 (de) | Schlepphebel | |
WO2008052874A1 (de) | Ventiltriebs-hebel für eine brennkraftmaschine | |
DE10308995B4 (de) | Schlepphebel eines Ventiltriebs einer Brennkraftmaschine | |
DE102019118615A1 (de) | Schaltbarer Betätigungshebel für Ventiltriebe | |
DE102010011826A1 (de) | Schaltbarer Schlepphebel für einen Ventiltrieb einer Brennkraftmaschine | |
DE102019118616A1 (de) | Schaltbarer Betätigungshebel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20081121 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR MK RS |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502007011923 Country of ref document: DE Effective date: 20130814 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130930 |
|
RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502007011923 Country of ref document: DE Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140218 Ref country code: DE Ref legal event code: R081 Ref document number: 502007011923 Country of ref document: DE Owner name: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES AG & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20140218 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20140320 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20130619 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502007011923 Country of ref document: DE Effective date: 20140320 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140411 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140411 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502007011923 Country of ref document: DE Owner name: SCHAEFFLER TECHNOLOGIES AG & CO. KG, DE Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH & CO. KG, 91074 HERZOGENAURACH, DE Effective date: 20150223 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 10 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20190429 Year of fee payment: 13 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20200430 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20210618 Year of fee payment: 15 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502007011923 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20221103 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |