WO2005028816A1 - Ventiltrieb - Google Patents
Ventiltrieb Download PDFInfo
- Publication number
- WO2005028816A1 WO2005028816A1 PCT/EP2004/008066 EP2004008066W WO2005028816A1 WO 2005028816 A1 WO2005028816 A1 WO 2005028816A1 EP 2004008066 W EP2004008066 W EP 2004008066W WO 2005028816 A1 WO2005028816 A1 WO 2005028816A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rocker arm
- valve
- steel
- valve train
- train according
- Prior art date
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
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
- F01L1/183—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat 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
- 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
- F01L2001/187—Clips, e.g. for retaining rocker arm on pivot
-
- 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
- F01L2001/188—Fulcrums at upper surface
-
- 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
- F01L2305/00—Valve arrangements comprising rollers
Definitions
- a pressure oil line which is arranged in the longitudinal extension of the rocker arm frame at the level of the open end of the hydraulic elements
- the outside of the inner pistons has a first circumferential groove in the area of overlap with the inside of the outer pistons, which is connected to the interior of the inner pistons via a radial bore. In this way, the low-air leakage oil from the high-pressure chamber of the outer pistons is collected in the circumferential groove of the inner pistons and returned to the interior of the inner pistons via the radial bore.
- a second circumferential groove with a snap ring is arranged on the outer circumference of the outer bulb in the region of the open end thereof, which snap-in ring engages in a third circumferential groove in the end region of the blind holes.
- the cross section of the deep-drawn sheet steel rocker arm is designed as an upwardly open U-shaped profile with a profile base into which the spherical cap is stamped and that the sheet steel rocker arm on the outside of the profile base is a contact element for the valve stems at the valve-side end a cylindrical shape with minimal transverse crowning is provided, the center line of which is parallel to the tilt axis of the sheet steel rocker arm.
- An alternative to the guide rails is extended side walls that are bent down and back and welded to the profile floor.
- a longitudinal section A-A (see Figure 2) is shown by a sheet steel rocker arm 1, which is suspended from a rocker arm part 2.
- the sheet steel rocker arm 1 is designed as a two-armed lever. It is driven by a camshaft (not shown) via a cylindrical, needle-bearing-mounted roller 3, is supported on the rocker arm frame 2 via a spherical cap 4 and a supporting ball 5 of a hydraulic element 6, and acts on the valve stems, which are also not shown, via a cylindrical shape 7 with minimal transverse crowning.
- the hydraulic elements 6 serve to compensate for the valve clearance. They are guided in blind holes 8 in the light metal of the rocker arm frame 2.
- the grooves 29 on the side 16 of the steel disk 11 remote from the ground serve to supply an interior 18 of the inner piston 10 with largely air-free pressure oil from the lower region of the pressure oil bore 14.
- the outer piston 9 sucks from the interior 18 when the inlet and outlet valves are closed while the valve clearance compensation by the force of a pressure spring 19 arranged in the high-pressure chamber 13, pressure oil via the ball valve 12 into the high-pressure chamber 13. This pressure oil is under high pressure due to the actuating forces when the valve is opened and flows into the sealing gap between the outer and inner pistons 9, 10.
- the hydraulic elements 6 locked in the rocker arm frame 2 are captively connected to the steel sheet rocker arm 1 by retaining clips 30, which engage both in openings 31, 32 in the profile base 25 and in a fourth circumferential groove 33 at the transition from the support ball 5 to the outer piston 9. This results in an assembly-friendly unit of rocker arm frame 2 and steel sheet rocker arms 1.
- FIG. 2 shows a plan view of a part of the rocker arm frame 2 with attached steel sheet rocker arms 1 and the position information of the sectional plane A-A.
- the first and second strips 34, 35 are connected in one piece by a first web 36.
- the screw positions 27 of the screws for fastening the rocker arm frame 2 to the cylinder head and the ventilation bores 17 are also shown.
- the length and lateral offset of the sheet steel rocker arms 1 are clearly recognizable.
- FIG. 3 shows a front view of the rocker arm frame 2 with attached steel sheet rocker arms 1.
- the closed pressure oil bores 14 can be seen.
- FIG. 4 shows a partial view of the underside of the rocker arm frame 2 with attached steel sheet rocker arms 1.
- the first and second webs 36, 37 and the screw positions 27 of the screws required for screwing onto the cylinder head are shown.
- the bottom view of the sheet steel rocker arm 1 shows the cylindrical roller 3, the outside view of the spherical cap 4, which, like the cylindrical shape 7 and the guide rails 28, will be formed by plastic deformation of the profile base 25.
- the hydraulic elements 6 are captively connected by snap rings 23 to the rocker arm frame 2 and by retaining clips 30 to the steel plate rocker arms 1, which results in simple assembly of the pre-completed rocker arm frame 2;
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04741147A EP1664491B1 (de) | 2003-09-05 | 2004-07-20 | Ventiltrieb |
DE502004008497T DE502004008497D1 (de) | 2003-09-05 | 2004-07-20 | Ventiltrieb |
US10/569,765 US7261073B2 (en) | 2003-09-05 | 2004-07-20 | Valve drive |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10340944A DE10340944A1 (de) | 2003-09-05 | 2003-09-05 | Ventiltrieb |
DE10340944.0 | 2003-09-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005028816A1 true WO2005028816A1 (de) | 2005-03-31 |
Family
ID=34352766
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/008066 WO2005028816A1 (de) | 2003-09-05 | 2004-07-20 | Ventiltrieb |
Country Status (4)
Country | Link |
---|---|
US (1) | US7261073B2 (de) |
EP (1) | EP1664491B1 (de) |
DE (2) | DE10340944A1 (de) |
WO (1) | WO2005028816A1 (de) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1881165A2 (de) * | 2006-07-21 | 2008-01-23 | Schaeffler KG | Schaltbarer Ventiltrieb für eine Brennkraftmaschine |
EP1881166A1 (de) * | 2006-07-21 | 2008-01-23 | Schaeffler KG | Schaltbarer Ventiltrieb für eine Brennkraftmaschine |
EP2792859A1 (de) * | 2013-03-25 | 2014-10-22 | GT Technologies | Rückhaltevorrichtung für Ventilbetätigungsmechanismus |
US9863291B2 (en) | 2015-05-14 | 2018-01-09 | GT Technologies | Locator for use in a valvetrain of a cylinder head of an internal combustion engine |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006002996A1 (de) * | 2006-01-21 | 2007-08-02 | Schaeffler Kg | Kipphebel aus Stahlblech |
DE102008010130A1 (de) | 2007-03-22 | 2008-09-25 | Schaeffler Kg | Ventiltrieb für eine Brennkraftmaschine |
US20110239967A1 (en) * | 2010-03-30 | 2011-10-06 | Gnutti Ltd. | Valve bridge |
DE102010054407A1 (de) | 2010-12-14 | 2012-06-14 | Schaeffler Technologies Gmbh & Co. Kg | Ventiltriebsystem |
DE102011005851A1 (de) | 2011-03-21 | 2012-09-27 | Schaeffler Technologies Gmbh & Co. Kg | Ventiltriebsystem für eine Brennkraftmaschine |
US11339688B2 (en) | 2020-01-29 | 2022-05-24 | Borgwarner, Inc. | Variable camshaft timing valve assembly |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4682575A (en) * | 1986-03-31 | 1987-07-28 | Ford Motor Company | Low friction high speed rocker arm |
US4739734A (en) * | 1985-07-19 | 1988-04-26 | Honda Giken Kogyo Kabushiki Kaisha | Valve train for internal combustion engine |
DE3743854A1 (de) * | 1987-12-23 | 1989-07-06 | Michael Stirm | Vierventilsteuerung mit oberen abstuetzelementen |
US4913104A (en) * | 1988-11-30 | 1990-04-03 | Henley Manufacturing Corporation | Rocker arm for operating two valves |
WO2000020730A1 (en) * | 1998-10-05 | 2000-04-13 | Eaton Automotive S.P.A. | Valve train assembly |
DE19932348A1 (de) * | 1999-07-10 | 2001-01-11 | Porsche Ag | Ventilspielausgleich für Brennkraftmaschinen |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4500169A (en) * | 1982-07-13 | 1985-02-19 | Donnelly John H | Cosmetic and observer line of sight mirror |
JPS60116809A (ja) * | 1983-11-25 | 1985-06-24 | Mazda Motor Corp | エンジンの弁不作動装置 |
JPS62294708A (ja) * | 1986-06-14 | 1987-12-22 | Honda Motor Co Ltd | 密封型ラツシユアジヤスタ |
-
2003
- 2003-09-05 DE DE10340944A patent/DE10340944A1/de not_active Ceased
-
2004
- 2004-07-20 US US10/569,765 patent/US7261073B2/en not_active Expired - Fee Related
- 2004-07-20 EP EP04741147A patent/EP1664491B1/de not_active Expired - Lifetime
- 2004-07-20 DE DE502004008497T patent/DE502004008497D1/de not_active Expired - Lifetime
- 2004-07-20 WO PCT/EP2004/008066 patent/WO2005028816A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4739734A (en) * | 1985-07-19 | 1988-04-26 | Honda Giken Kogyo Kabushiki Kaisha | Valve train for internal combustion engine |
US4682575A (en) * | 1986-03-31 | 1987-07-28 | Ford Motor Company | Low friction high speed rocker arm |
DE3743854A1 (de) * | 1987-12-23 | 1989-07-06 | Michael Stirm | Vierventilsteuerung mit oberen abstuetzelementen |
US4913104A (en) * | 1988-11-30 | 1990-04-03 | Henley Manufacturing Corporation | Rocker arm for operating two valves |
WO2000020730A1 (en) * | 1998-10-05 | 2000-04-13 | Eaton Automotive S.P.A. | Valve train assembly |
DE19932348A1 (de) * | 1999-07-10 | 2001-01-11 | Porsche Ag | Ventilspielausgleich für Brennkraftmaschinen |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1881165A2 (de) * | 2006-07-21 | 2008-01-23 | Schaeffler KG | Schaltbarer Ventiltrieb für eine Brennkraftmaschine |
EP1881166A1 (de) * | 2006-07-21 | 2008-01-23 | Schaeffler KG | Schaltbarer Ventiltrieb für eine Brennkraftmaschine |
EP1881165A3 (de) * | 2006-07-21 | 2009-12-16 | Schaeffler KG | Schaltbarer Ventiltrieb für eine Brennkraftmaschine |
EP2792859A1 (de) * | 2013-03-25 | 2014-10-22 | GT Technologies | Rückhaltevorrichtung für Ventilbetätigungsmechanismus |
US9482120B2 (en) | 2013-03-25 | 2016-11-01 | GT Technologies | Retention device for valve actuating mechanism |
US9863291B2 (en) | 2015-05-14 | 2018-01-09 | GT Technologies | Locator for use in a valvetrain of a cylinder head of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
US20070012272A1 (en) | 2007-01-18 |
DE10340944A1 (de) | 2005-04-28 |
EP1664491B1 (de) | 2008-11-19 |
DE502004008497D1 (de) | 2009-01-02 |
EP1664491A1 (de) | 2006-06-07 |
US7261073B2 (en) | 2007-08-28 |
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