EP1320666A1 - Abschaltbares abstützelement - Google Patents
Abschaltbares abstützelementInfo
- Publication number
- EP1320666A1 EP1320666A1 EP01978318A EP01978318A EP1320666A1 EP 1320666 A1 EP1320666 A1 EP 1320666A1 EP 01978318 A EP01978318 A EP 01978318A EP 01978318 A EP01978318 A EP 01978318A EP 1320666 A1 EP1320666 A1 EP 1320666A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- outer housing
- slide
- support element
- bore
- 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.)
- Withdrawn
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
- 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
-
- 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
- F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
-
- 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
- F01L13/0005—Deactivating valves
Definitions
- the invention relates to a switchable support element for a rocker arm of a valve drive of an internal combustion engine, which is installed in a cylinder head of an internal combustion engine, with an outer housing, an inner element, a slide and a housing for the slide, the outer housing being installed in a receptacle of the cylinder head and accommodates the inner element in an axially movable manner, wherein in the inner element and in the outer housing there is a bore aligned in an axial relative position, into which holes the slide for the coupling case of the inner element with the outer housing can be displaced at least in sections from the housing, and wherein the housing sits in the cylinder head and adjoins the bore of the outer housing with its inner face.
- Such a support element is already known from DE 44 22 340 A1, which is considered to be generic. This is also designed to be switchable, wherein it is cut axially below its play compensation element by a slide for coupling purposes.
- the slide runs on its side facing away from the support element in a separate housing in the cylinder head. For coupling purposes, the slide completely passes through the supporting element at the end.
- a so-called lost motion spring is provided, which acts axially below the slide on an inner element of the support element.
- the inner end face of the housing has a ring shoulder which is installed in the bore of the outer housing or that the inner end face of the housing is connected to the outer housing via a flange, the slide being electromagnetically loadable and is designed as an actuator rod with an anchor plate.
- a particularly preferred embodiment is present if, according to a subsequent subclaim, the bores of the inner element and the outer housing run radially, the bore in the inner element being made as a blind bore.
- This support element essentially does not require more installation space than non-switchable support elements, so that they can be easily adapted to cylinder heads which have been designed so far; or builds the support element shorter than the switchable solutions according to the prior art. On the one hand, this is achieved by avoiding the previously nested design by forming the bore in the inner element as a blind bore.
- connection between the ring shoulder and the outer housing which is preferably provided as a press connection, they are in the state of the Any possible misalignment of the housing and thus of the slide to the holes in the support element, which can be determined using technology, is effectively avoided.
- a hydraulic lash adjuster known per se is installed in the support element. Mechanical clearance adjustment measures or hydraulic clearance adjustment measures in the valve train can thus be dispensed with elsewhere.
- the slide is hydraulically displaced in at least one direction of displacement, it can be displaced in the opposite direction using the force of a spring means such as, for example, at least one compression spring or also using hydraulic means.
- the hydraulic medium is expediently conducted from the cylinder head adjacent to the housing into a pressure chamber located in front of a pressure plate of the slide.
- Figures 1 to 4 cross sections through the switchable support element with housing, Figures 1, 2 refer to an electromagnetically displaceable slide and Figures 3, 4 to a hydraulically displaceable slide;
- FIGS. 1 to 4 disclose a support element 1 which can be switched off and has a laterally arranged housing 2, as is known to experts in terms of its basic structure (see also DE 4422 340 A1).
- the support element 1 has an outer housing 3, which is fixed in a receptacle 4 of an indicated Cylinder head 5 is installed.
- An inner element 6 is received in the outer housing 3 so as to be axially movable. This can have a hydraulic lash adjuster 7, not shown in the drawing.
- the inner element 6 has a head for one-sided support of a rocker arm.
- a bore 9, 8 runs in each of the outer housing 3 and the inner element 6.
- the bore 8 in the inner element 6 is made as a blind bore, whereas the bore 9 in the outer housing 3 is made as a through bore.
- Both bores 8, 9 are aligned with the outer housing 3 in an axial relative position of the inner element 6. This relative position is determined by an axially separated state from the inner element 6 to the outer housing 3 for the purpose of achieving a full stroke on the gas exchange valve acted upon by the rocker arm.
- the sleeve-like housing 2 runs in the cylinder head 5. This extends orthogonally to the longitudinal axis of the support element 1 and directly adjoins the outer housing 3 with its inner end face 10. In the area of the inner end face 10 it has an annular shoulder 11 which is pressed into the bore 9, for example.
- a slide 12 runs in the housing 2 and thus laterally in the cylinder head 5. This serves to couple the inner element 6 to the outer housing 3 when the support element 1 is switched on. In the event of a shutdown, the slide 12 extends at most up to immediately before the bore 8 of the inner element 6 If it is switched on, it is shifted with partial sections into the bore 8 of the inner element 6 during a basic cycle of a cam acting on the rocker arm.
- FIG. 2 It can be seen from FIG. 2 that, in contrast to FIG. 1, the slide 12 is displaced in the coupling direction via the force of a spring means 16 such as a compression spring and in the decoupling direction via the force of an electromagnet 17.
- An anchor plate 18 is arranged on one side of the ring shoulder 11.
- FIGS. 3, 4 relate to hydraulic displacement possibilities of the slide 12.
- the slide 12 can be displaced in its coupling direction via hydraulic medium that can be applied to its pressure plate 19.
- a resetting is again accomplished via the force of at least one spring means 20, such as a compression spring.
- FIG. 5 shows that the ring shoulder 11 of the housing 2 can also be produced separately. It has an annular groove 22 on its outer jacket, in which a retaining ring 23 extends. The housing 2 with the ring extension 11 experiences a snap connection 24 via this locking ring 23.
- the support element 1 is essentially only as high as the non-switchable support elements previously implemented.
- the connection of the ring shoulder 11 with the outer housing 3 achieves an excellent positional assignment of the slide 12 to the bores 8, 9.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10048619 | 2000-09-30 | ||
DE2000148619 DE10048619A1 (de) | 2000-09-30 | 2000-09-30 | Abschaltbares Abstützelement |
US23730100P | 2000-10-02 | 2000-10-02 | |
PCT/EP2001/009979 WO2002029217A1 (de) | 2000-09-30 | 2001-08-30 | Abschaltbares abstützelement |
US237301P | 2009-08-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1320666A1 true EP1320666A1 (de) | 2003-06-25 |
Family
ID=26007229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01978318A Withdrawn EP1320666A1 (de) | 2000-09-30 | 2001-08-30 | Abschaltbares abstützelement |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1320666A1 (de) |
AU (1) | AU2002210471A1 (de) |
CA (1) | CA2421867A1 (de) |
WO (1) | WO2002029217A1 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3239941A1 (de) * | 1982-10-28 | 1984-05-03 | Volkswagenwerk Ag, 3180 Wolfsburg | Vorrichtung zur abschaltung des ventiltriebes einer brennkraftmaschine |
DE4442965A1 (de) * | 1994-12-02 | 1996-06-05 | Audi Ag | Ventiltrieb mit mechanischer Verriegelung |
DE19838909A1 (de) * | 1998-08-27 | 2000-03-02 | Schaeffler Waelzlager Ohg | Schaltbarer Ventiltrieb einer Brennkraftmaschine |
-
2001
- 2001-08-30 WO PCT/EP2001/009979 patent/WO2002029217A1/de not_active Application Discontinuation
- 2001-08-30 EP EP01978318A patent/EP1320666A1/de not_active Withdrawn
- 2001-08-30 CA CA002421867A patent/CA2421867A1/en not_active Abandoned
- 2001-08-30 AU AU2002210471A patent/AU2002210471A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0229217A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU2002210471A1 (en) | 2002-04-15 |
WO2002029217A1 (de) | 2002-04-11 |
CA2421867A1 (en) | 2003-03-10 |
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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: 20030221 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SEITZ, JOACHIM Inventor name: SCHMIDT, DIETER Inventor name: ROERIG, BODO Inventor name: HAAS, MICHAEL |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB IT SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20040302 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230522 |