EP2010758A1 - Hydraulisches abstützelement für einen hebelartigen nockenfolger eines ventiltriebs einer brennkraftmaschine - Google Patents
Hydraulisches abstützelement für einen hebelartigen nockenfolger eines ventiltriebs einer brennkraftmaschineInfo
- Publication number
- EP2010758A1 EP2010758A1 EP07727961A EP07727961A EP2010758A1 EP 2010758 A1 EP2010758 A1 EP 2010758A1 EP 07727961 A EP07727961 A EP 07727961A EP 07727961 A EP07727961 A EP 07727961A EP 2010758 A1 EP2010758 A1 EP 2010758A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pressure piston
- passage
- deflecting element
- head
- housing
- 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
- F01L1/20—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
- 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
Definitions
- the invention relates to a hydraulic support element for a lever-like cam follower of a valve train of an internal combustion engine, with a pot-like housing which can be installed with its outer shell in a cylinder head of the internal combustion engine or in a connected to the internal combustion engine component and in its bore an axially movable, a Storage space for hydraulic means enclosing and acted upon by a spring means away from the housing pressure piston which projects beyond a front of the housing with a ball head for the cam follower and bore side has a ring web with a check valve, between which ring land and a bottom of the housing a high-pressure chamber for the Hydraulic means is formed, which is fed from the reservoir via the check valve with the hydraulic fluid, wherein the housing is at least one passage for the hydraulic fluid from the cylinder head immanent, the radially inward with at least communicates with a passage in the pressure piston and wherein in the reservoir a sleeve-like deflection element for the hydraulic medium extends between the outer shell and an
- Such a support element is disclosed in DE 10 2004 006 903 A1.
- This has a multipart pressure piston, which is laborious to add. It can be seen that its deflecting element with its head end extends only approximately to a region of a constriction below the ball head and has a relatively large radial distance from the inner surface of the pressure piston above the passage.
- the deflecting element thus includes only an insufficient amount of hydraulic fluid.
- a hydraulic medium-tight fastening of the deflecting proves to be critical.
- the object of the invention is therefore to provide a support element in which the disadvantages listed are eliminated.
- this object is achieved in that a) the pressure piston is shown completely in one piece; b) that the deflecting element with its head distant forehead is directly on the annular web and axially below the passage directly up to the head distant forehead sealing against the inner surface of the pressure piston; c) that the deflecting element follows at least substantially immediately adjacent to a passage of a contour of the inner jacket of the pressure piston or at least predominantly on the inner shell, except for the climbing path, and that d) the head end of the deflecting approximately or axially o lies beyond a center of rotation of the ball head.
- the deflecting element is inserted into the pressure piston before the ball head is closed by a production process such as press fitting or the like.
- the deflecting element can be represented for example from a sheet metal material. However, it is also intended for a training in plastic.
- the deflecting element extends with its head-side forehead close to or at least as close as possible (oil passage) to the underside of the ball head, so that here a maximum high oil column can be enclosed.
- a simple variant of a fastening of the sleeve-like deflecting element on the inner jacket of the pressure piston is present when it is snapped to a region axially below a Ringeinformung, glued, crimped, pressed, welded, soldered, clamped o.
- the aforementioned Ring indentation be provided for particular axial fixation of the deflecting element.
- the deflecting element rests axially all around the passage in the pressure piston, and rests with its head on a ring ridge of the pressure piston with the non-return valve, a particularly good sealing of the riser path from the reservoir (interior of the deflecting element) is given.
- the ball head of the pressure piston may still have a passage such as a central bore, so that a lubrication of the cam follower is given in the contact area.
- the deflection element above the passage follows a contour of the inner jacket of the pressure piston or rests directly against this inner jacket except for the climbing path.
- the climbing path can also run in the inner jacket of the pressure piston and sealed by the deflecting element or be arranged completely in the pressure piston.
- the deflecting element can be installed secured against rotation in the pressure piston, which is intended here to a simple longitudinal representation to be represented on a component that communicates with a complementary-forming on each other component.
- An alternative variant proposes to increase the storable volume of hydraulic fluid in the pressure piston by a largely largely pulled upwards passage in the pressure piston, wherein on the outer surface of the pressure piston, a riser runs axially upwardly connected to the passage and axially down to the passage.
- hydraulic fluid may leak to a maximum of a lower edge of the elevated passage.
- cam follower that can be mounted on the support element, in particular a towing lever (switchable or Vietnameseschaltbarer nature) but also to a rocker arm (switchable or Vietnameseschaltbarer nature) is intended.
- cam followers can rest, which serve for the simultaneous actuation of several identical gas exchange valves.
- Figure 1 in a longitudinal section a first variant of a support element according to the invention
- Figure 2 shows the deflecting element of Figure 1 in a three-dimensional view
- Figure 3 shows a further variant of a support element according to the invention with largely allumend lying deflecting element
- FIG. 4 is a partial sectional view of a three-dimensional representation of the pressure piston according to FIG. 3;
- FIG. 6 shows a further variant of a support element
- FIG. 8 shows a further variant of a support element according to the invention with equidistant spacing from the inner jacket of FIG. 8
- FIG. 9-1 1 in schematic partial views of the deflecting element with differently shaped head-side forehead. Detailed description of the drawing
- a hydraulic support element 1 consisting of a cup-shaped housing 2, in the bore 4 axially movable, a pressure piston 7 is installed.
- the housing 2 is closed by a bottom 12 and can be installed via its outer shell 3 in a receptacle of a cylinder head, not shown o. The like. Stationary.
- the pressure piston 7 protrudes with its ball head 9 a forehead 8 of the housing 2.
- a rocker arm (switchable, non-switchable) are pivotally mounted.
- a constriction 23 is arranged in the pressure piston 7. This guarantees a free pivoting mobility of the resting cam follower.
- the pressure piston 7 includes a reservoir 5 for hydraulic fluid. This is the housing side limited by an annular web 10 with a check valve attached thereto 1 1. Axially below the annular web 10, a high-pressure chamber 13 is formed. This is supplied with hydraulic fluid from the aforementioned storage space 5 via the check valve 1 1 in a known manner.
- an axially almost continuous, sleeve-like deflection element 16 is installed in the interior of the pressure piston 7. This is preferably (no condition) with his head distant forehead 22 on the ring land 10. Axially below a ring indentation 29 extending inside the housing 2 (see, for example, FIG. 3), the deflecting element 16 is sealingly applied to the inner jacket 18 of the pressure piston 7. In approximately in the area of the ring indentation 29, the pressure piston 7 has a passage 15 for hydraulic fluid. This communicates with a passage 14 in the housing 2. In this case, an annular groove is introduced in the bore 4 of the housing 2, so that the pressure piston 7 can be installed without rotation.
- the aforesaid deflecting element 16 extends in the pressure piston 7, which is integral with all variants, with its head end 21 directly below the ball head 9. In this case, according to FIG. 1, it has a roof-like ring collar 30. This ensures a special leakage safety.
- the deflecting element 16 on the outer casing 17 has a rising path 19 for supplying the hydraulic medium into its interior space 21 a, on the side of the passage 15, which here serves as a longitudinal channel 28 (according to FIG 1, 2).
- the outer sheath 17 of the deflecting element 16 is designed to be completely smooth-cylindrical and lies in the region of the constriction 23 against the inner casing 18 of the pressure piston 7. In this embodiment (FIGS. 1, 2), a rotationally secured installation of the deflecting element 16 is therefore unnecessary.
- the deflecting element 16 rests completely on the inner jacket 18 of the pressure piston 7 except for the rising path 19. Only in the outer jacket 17 of the deflecting element 16 is a longitudinal channel 24 introduced as a rising path 19, which is in fluid communication with the passage 15. In the latter variant, the deflecting element 16 should be installed against rotation. Specifically, this consists of a longitudinal shaping 26 on the deflection element 16, which is in operative connection with a complementary indentation 27 on the inner casing 18 of the pressure piston 7.
- FIG. 6 discloses a variant of a leak-proof support element 1, in which the deflection element 16 is dispensed with.
- the passage 15 is arranged axially “elevated” in comparison to previous embodiments, so that the reservoir 5 can run to a maximum of a lower edge of the passage 15. So that the passage 14 in the housing 2 and thus also the supply line in the cylinder head need not be changed
- Figure 8 discloses a further variant of a casserole safe support element 1 with deflecting 16. This follows here largely with its contour of the contour of the inner shell 18 of the pressure piston 7. Thus, an all-round climbing path 19, starting from the passage 15 to the head end 21, shown.
- the arrows symbolize the flow direction of the hydraulic fluid (valid for all variants).
- FIGS. 9-1 show different variants of a design of the head 21 of the deflecting element 16.
- the deflecting element 16 can be open like a sleeve in this area (see also FIGS. 3, 8).
- a ring collar 30 which projects radially inwardly and which is tapered like a roof here.
- the vorgenante annular collar 30 is employed orthogonal to the outer jacket 17 of the deflecting element 16. Exactly the latter two variants offer an additional leakage protection.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Check Valves (AREA)
- Actuator (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL07727961T PL2010758T3 (pl) | 2006-04-13 | 2007-04-11 | Hydrauliczny element podparcia dla dźwigniowego popychacza krzywkowego napędu zaworu silnika spalinowego |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006017442A DE102006017442A1 (de) | 2006-04-13 | 2006-04-13 | Hydraulisches Abstützelement für einen hebelartigen Nockenfolger eines Ventiltriebs einer Brennkraftmaschine |
PCT/EP2007/053493 WO2007118820A1 (de) | 2006-04-13 | 2007-04-11 | Hydraulisches abstützelement für einen hebelartigen nockenfolger eines ventiltriebs einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2010758A1 true EP2010758A1 (de) | 2009-01-07 |
EP2010758B1 EP2010758B1 (de) | 2015-07-29 |
Family
ID=38197721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07727961.0A Not-in-force EP2010758B1 (de) | 2006-04-13 | 2007-04-11 | Hydraulisches abstützelement für einen hebelartigen nockenfolger eines ventiltriebs einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2010758B1 (de) |
CN (1) | CN201228569Y (de) |
DE (1) | DE102006017442A1 (de) |
PL (1) | PL2010758T3 (de) |
WO (1) | WO2007118820A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102393314A (zh) * | 2011-10-21 | 2012-03-28 | 煤炭科学研究总院 | 一种液压支架综合性能试验装置 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8490590B2 (en) * | 2009-06-10 | 2013-07-23 | Nittan Valve Co., Ltd. | Hydraulic lash adjuster for internal combustion engine |
DE102010047138A1 (de) | 2010-09-30 | 2012-04-05 | Schaeffler Technologies Gmbh & Co. Kg | Durckmittelführendes Motorelement einer Brennkraftmaschine |
DE102011075042A1 (de) | 2011-05-02 | 2012-11-08 | Schaeffler Technologies AG & Co. KG | Hydraulisches Abstützelement |
CN102788154B (zh) * | 2012-08-17 | 2015-08-26 | 杭州新坐标科技股份有限公司 | 一体式液压挺柱柱塞及其整体滚压成型方法 |
JP5989563B2 (ja) | 2013-02-14 | 2016-09-07 | 株式会社オティックス | ラッシュアジャスタ |
JP2014156782A (ja) | 2013-02-14 | 2014-08-28 | Otics Corp | ラッシュアジャスタ |
JP5943854B2 (ja) | 2013-02-15 | 2016-07-05 | 株式会社オティックス | ラッシュアジャスタ |
JP6050698B2 (ja) * | 2013-02-15 | 2016-12-21 | 株式会社オティックス | ラッシュアジャスタ |
JP6045934B2 (ja) * | 2013-02-15 | 2016-12-14 | 株式会社オティックス | ラッシュアジャスタ |
US9157340B2 (en) | 2013-03-25 | 2015-10-13 | GT Technologies | Dual feed hydraulic lash adjuster for valve actuating mechanism |
WO2015100641A1 (zh) * | 2013-12-31 | 2015-07-09 | 杭州新坐标科技股份有限公司 | 一体式液压挺柱柱塞及其整体滚压成型方法 |
CN103939162B (zh) | 2014-03-24 | 2018-01-02 | 杭州新坐标科技股份有限公司 | 柱状式液压挺柱 |
CN104131852B (zh) * | 2014-07-01 | 2017-07-07 | 杭州新坐标科技股份有限公司 | 一种柱状式液压挺柱及其柱塞制备方法 |
DE102014220386B3 (de) * | 2014-10-08 | 2016-02-04 | Schaeffler Technologies AG & Co. KG | Mechanischer Rollenstößel |
CN104612776B (zh) * | 2014-12-11 | 2017-08-29 | 杭州新坐标科技股份有限公司 | 一种柱状式液压挺柱 |
DE102015209336A1 (de) | 2015-05-21 | 2016-11-24 | Schaeffler Technologies AG & Co. KG | Hydraulisches Ausgleichselement für den Ventiltrieb einer Brennkraftmaschine |
DE102015222629A1 (de) | 2015-11-17 | 2017-05-18 | Schaeffler Technologies AG & Co. KG | Hydraulisches Abstützelement |
CN105545400B (zh) * | 2016-02-04 | 2019-01-08 | 杭州新坐标科技股份有限公司 | 一种无限位卡簧的柱状式液压挺柱 |
DE102019105607A1 (de) | 2019-03-06 | 2020-01-09 | Schaeffler Technologies AG & Co. KG | Hydraulisches Abstützelement für einen Ventiltrieb einer Brennkraftmaschine |
DE102020103411A1 (de) | 2020-02-11 | 2021-08-12 | Schaeffler Technologies AG & Co. KG | Handhabungsvorrichtung |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2343269A1 (de) * | 1973-08-28 | 1975-03-06 | Motomak | Hydraulisches spielausgleichselement fuer die ventilsteuerung von brennkraftmaschinen |
FR2542372B1 (fr) * | 1983-03-08 | 1987-01-23 | Mitsubishi Motors Corp | Culbuteur et son procede de fabrication |
JPH072967Y2 (ja) * | 1988-09-30 | 1995-01-30 | 富士バルブ株式会社 | 油圧式バルブラッシュアジャスタ |
JPH06173622A (ja) * | 1992-12-04 | 1994-06-21 | Nippon Seiko Kk | 油圧式ラッシュアジャスターおよびその製造方法 |
DE19614668A1 (de) * | 1996-04-13 | 1997-10-16 | Schaeffler Waelzlager Kg | Hydraulisches Abstützelement für eine Ventilsteuerung einer Brennkraftmaschine |
DE19805511A1 (de) * | 1998-02-11 | 1999-08-12 | Bayerische Motoren Werke Ag | Hydraulisches Ventilspiel-Ausgleichselement für einen Ventiltrieb einer Brennkraftmaschine |
JP2004197665A (ja) * | 2002-12-19 | 2004-07-15 | Otics Corp | ラッシュアジャスタ及びそのプランジャの製造方法 |
DE102004006903A1 (de) * | 2004-02-12 | 2005-09-22 | Ina-Schaeffler Kg | Hydraulisches Abstützelement |
-
2006
- 2006-04-13 DE DE102006017442A patent/DE102006017442A1/de not_active Withdrawn
-
2007
- 2007-04-11 EP EP07727961.0A patent/EP2010758B1/de not_active Not-in-force
- 2007-04-11 PL PL07727961T patent/PL2010758T3/pl unknown
- 2007-04-11 CN CNU2007900000429U patent/CN201228569Y/zh not_active Expired - Lifetime
- 2007-04-11 WO PCT/EP2007/053493 patent/WO2007118820A1/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007118820A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102393314A (zh) * | 2011-10-21 | 2012-03-28 | 煤炭科学研究总院 | 一种液压支架综合性能试验装置 |
CN102393314B (zh) * | 2011-10-21 | 2016-08-24 | 煤炭科学技术研究院有限公司 | 一种液压支架综合性能试验装置 |
Also Published As
Publication number | Publication date |
---|---|
PL2010758T3 (pl) | 2016-02-29 |
CN201228569Y (zh) | 2009-04-29 |
EP2010758B1 (de) | 2015-07-29 |
WO2007118820A1 (de) | 2007-10-25 |
DE102006017442A1 (de) | 2007-10-18 |
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