EP1119689A1 - Ventiltrieb - Google Patents

Ventiltrieb

Info

Publication number
EP1119689A1
EP1119689A1 EP99970148A EP99970148A EP1119689A1 EP 1119689 A1 EP1119689 A1 EP 1119689A1 EP 99970148 A EP99970148 A EP 99970148A EP 99970148 A EP99970148 A EP 99970148A EP 1119689 A1 EP1119689 A1 EP 1119689A1
Authority
EP
European Patent Office
Prior art keywords
rocker arm
assembly
fulcrum
rocker
carrier
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
Application number
EP99970148A
Other languages
English (en)
French (fr)
Other versions
EP1119689B2 (de
EP1119689B1 (de
Inventor
Majo Cecur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eaton SRL
Original Assignee
Eaton Automotive SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11380809&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1119689(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eaton Automotive SpA filed Critical Eaton Automotive SpA
Publication of EP1119689A1 publication Critical patent/EP1119689A1/de
Application granted granted Critical
Publication of EP1119689B1 publication Critical patent/EP1119689B1/de
Publication of EP1119689B2 publication Critical patent/EP1119689B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead 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
    • 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
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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
    • F01L2305/00—Valve arrangements comprising rollers

Definitions

  • the present invention relates to a valve train assembly for an internal
  • rocker arms which are mounted on a common pivot or axle and which
  • combustion engine comprises a valve train carrier having a plurality of
  • carrier may also have one or more camshafts mounted thereto.
  • Such an arrangement can be provided as a pre-assembled unit for
  • Each fulcrum may form part of a hydraulic lash adjuster. Accordingly,
  • associated fulcrum have co-operating part-spherical surfaces which permit not
  • the rocker arm has a part-spherical recess into which a
  • arm may be attached to the projection by means of a clip, possibly made of
  • the rockers are made of pressed sheet metal (with the final
  • rocker a roller with a wide surface which is flat in a direction parallel to the
  • the camshaft need not be so strong, and indeed it is possible to
  • rockers can be substantially identical, thereby reducing manufacturing costs. .Arrangements embodying the invention will now be described by way
  • Fig. 1 is a side view of a prior art rocker arm
  • Fig. 2 is a side view, partly in section, of a rocker arm arrangement
  • Fig. 3 is a side view of the rocker arm of Figure 2;
  • Fig. 4 is a plan view of the rocker arm shown in Fig. 3;
  • Fig. 5 is a section along the line V-V of Fig. 3;
  • Fig. 6 shows is a section along the line VI-VI in Fig. 3;
  • Fig. 7 is a section through a hydraulic tappet forming a fulcrum of the
  • Fig. 8 is a transverse section showing a valve train carrier of the
  • Fig. 9 is a plan view of the valve train carrier as shown in Fig. 7;
  • Fig. 10 is a side view showing another embodiment of a valve train
  • Fig. 11 is a perspective view, from below, of a valve train carrier of
  • Fig. 1 shows a prior art rocker (B) made of pressed aluminium
  • rocker (B) carries other rockers arranged in a row.
  • One end of the rocker (B) is in contact with a cam (C) by means of a roller (R'), while the other end has a
  • the tappet has a spigot or projection (81) at the base acting on the head
  • a double row of camshafts (A') acts on convex surfaces of
  • Fig. 2 shows an example of a rocker arm arrangement according to the
  • the rocker (B) of the present invention is again a lever of the first
  • rocker (B) is a centre-pivoted rocker arm.
  • rocker (B) is a centre-pivoted rocker arm.
  • V valve (V) against the resilient force of a spring (M).
  • the rocker (B) shown in Figs. 3 to 6 is made up of two lateral flanges
  • the tappet (4) is fitted in its own fixed seat (45, Fig. 7)
  • rocker arm can rotate about an axis X (Fig. 4) and about the
  • Rocker (B) comprises at one end a transverse opening (15) into which
  • a pivoting trunnion (16) is fitted, the trunnion (16) having opposing recesses
  • (B) of the valve shaft which may vary depending on the type of engine.
  • roller (R) having needle bearings and located
  • Roller (R) is very simple, with a straight cylindrical outside surface
  • a resilient sheet (25) is used with flanges (26) folded back on themselves so that the lower section can be attached to the rocker flanges (see
  • the resilient sheet has an inlet (27) at the top for the purpose of
  • the sheet (30) may be
  • the projection or spigot (42) has a relatively
  • the aperture is elongate, with its longitudinal axis extended
  • cam shaft and valve cam shaft and valve.
  • alternative arrangements are possible.
  • the rocker arm could be fastened to the head (41) by means of a rivet
  • the head (41) possibly engaging therein by means of a screw thread or by a resilient enlarged portion which engages in an annular ridge within the recess.
  • fulcrum be fairly loose, and arranged so as not to inhibit the intended
  • Fig. 7 is a detailed view of the tappet (4), which keeps rocker (B)
  • fulcrum forms a plunger which is attached to a chamber (43) which slides in a
  • the oil is supplied through the inlet (50) and
  • Inlets (46) and (46') are provided in the spigot (42) for the purpose of
  • engine cylinder head has a lower head part (80) into which the valves (VI) and (V2) are installed. Their springs (M) are located in recesses (60) of the
  • valve train carrier formed by the cover (L)
  • one version may have hydraulic lash adjusters
  • rocker arms provided with rollers, and another, less-expensive one may
  • the camshaft is also fitted to the cover (L) during pre-
  • A2) are also preferably mounted to the carrier (L) before the entire assembly
  • the carriers (L) of either embodiment may have channels for

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)
  • Electrically Driven Valve-Operating Means (AREA)
  • Magnetically Actuated Valves (AREA)
  • Fluid-Driven Valves (AREA)
EP99970148A 1998-10-05 1999-10-05 Ventiltrieb Expired - Lifetime EP1119689B2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITMI982136 1998-10-05
IT1998MI002136A IT1302601B1 (it) 1998-10-05 1998-10-05 Bilanciere dotato di elemento idraulico nel fulcro per un treno dicomando di valvole.
PCT/IB1999/001699 WO2000020730A1 (en) 1998-10-05 1999-10-05 Valve train assembly

Publications (3)

Publication Number Publication Date
EP1119689A1 true EP1119689A1 (de) 2001-08-01
EP1119689B1 EP1119689B1 (de) 2004-01-21
EP1119689B2 EP1119689B2 (de) 2010-04-07

Family

ID=11380809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99970148A Expired - Lifetime EP1119689B2 (de) 1998-10-05 1999-10-05 Ventiltrieb

Country Status (7)

Country Link
EP (1) EP1119689B2 (de)
JP (1) JP4558938B2 (de)
AT (1) ATE258271T1 (de)
BR (1) BR9914635A (de)
DE (1) DE69914348T3 (de)
IT (1) IT1302601B1 (de)
WO (1) WO2000020730A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233704A1 (de) * 2009-03-10 2010-09-29 Schaeffler Technologies AG & Co. KG Kipphebelträger für einen Ventiltrieb einer Brennkraftmaschine

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10041466B4 (de) * 2000-08-23 2008-10-09 Man Diesel Se Ventiltrieb für Gaswechselventile einer Brennkraftmaschine
FR2821891B1 (fr) * 2001-03-09 2003-05-23 Renault Culasse de moteur thermique comportant un element superieur, formant couvre-culasse, qui porte l'arbre a cames
ATE384857T1 (de) * 2003-07-23 2008-02-15 Eaton Srl Blechklammer für kipphebel
DE10340944A1 (de) * 2003-09-05 2005-04-28 Ina Schaeffler Kg Ventiltrieb
DE102004005831A1 (de) * 2004-02-06 2005-08-25 Ina-Schaeffler Kg Verbindungsvorrichtung für einen Betätigungshebel und ein Abstützelement einer Ventilsteuerung einer Brennkraftmaschine
JP4144625B2 (ja) * 2006-01-19 2008-09-03 トヨタ自動車株式会社 内燃機関のカムシャフト支持構造
JP4238874B2 (ja) * 2006-01-19 2009-03-18 トヨタ自動車株式会社 内燃機関のカムシャフト支持構造
DE102006002996A1 (de) * 2006-01-21 2007-08-02 Schaeffler Kg Kipphebel aus Stahlblech
DE102006031031A1 (de) 2006-07-05 2008-01-10 Schaeffler Kg Hebelartiger Nockenfolger eines Ventiltriebs einer 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
JP4611964B2 (ja) * 2006-12-05 2011-01-12 株式会社オティックス ロッカアーム組付モジュール
DE102008022601A1 (de) 2008-05-07 2009-11-12 Schaeffler Kg Hebelartiger Nockenfolger
US8375909B2 (en) 2009-01-30 2013-02-19 Eaton Corporation Rocker arm retention
JP5345075B2 (ja) * 2010-01-08 2013-11-20 株式会社オティックス ロッカアームの製造方法
DE102010013942A1 (de) 2010-04-06 2011-10-06 Schaeffler Technologies Gmbh & Co. Kg Hebelartiger Nockenfolger
DE102011005851A1 (de) 2011-03-21 2012-09-27 Schaeffler Technologies Gmbh & Co. Kg Ventiltriebsystem für eine Brennkraftmaschine
GB2501876A (en) 2012-05-08 2013-11-13 Eaton Srl Hydraulic lash adjuster
US9482120B2 (en) 2013-03-25 2016-11-01 GT Technologies Retention device for valve actuating mechanism
DE102014215129A1 (de) * 2014-08-01 2016-02-04 Schaeffler Technologies AG & Co. KG Hebel für die Ventilbetätigung einer Brennkraftmaschine
DE112016001685T5 (de) * 2015-05-07 2018-01-25 Eaton Corporation Ventiltriebbaugruppe
DE112016001680T5 (de) * 2015-05-07 2018-02-15 Eaton Corporation Ventiltriebbaugruppe mit Deaktivierung
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
ITUA20163586A1 (it) * 2016-04-29 2017-10-29 Gnutti Carlo Spa Apparato di azionamento delle valvole in motore endotermico
CN113047921B (zh) * 2016-05-10 2022-11-29 伊顿智能动力有限公司 模块化排气阀门摇臂组件及装配其的方法
US10934897B2 (en) * 2016-06-17 2021-03-02 Nittan Valve Co., Ltd. Mechanical lash adjuster
DE102022109243A1 (de) 2022-04-14 2023-10-19 Bayerische Motoren Werke Aktiengesellschaft Verbrennungskraftmaschine für ein Kraftfahrzeug sowie Kraftfahrzeug

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT87113B (de) * 1915-09-06 1922-01-25 Daimler Motoren Ventilsteuerung für Kraftmaschinen.
DE1260864B (de) * 1965-12-07 1968-02-08 Porsche Kg Luftgekuehlte Brennkraftmaschine
JPS5888412A (ja) * 1981-11-20 1983-05-26 Honda Motor Co Ltd 頭上弁式動弁機構
US4682575A (en) * 1986-03-31 1987-07-28 Ford Motor Company Low friction high speed rocker arm
US4762099A (en) * 1986-07-08 1988-08-09 Honda Giken Koygo Kabushiki Kaisha Valve actuating device of four-cycle internal combustion engine
US4913104A (en) * 1988-11-30 1990-04-03 Henley Manufacturing Corporation Rocker arm for operating two valves
JPH0397505U (de) * 1990-01-27 1991-10-08

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0020730A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2233704A1 (de) * 2009-03-10 2010-09-29 Schaeffler Technologies AG & Co. KG Kipphebelträger für einen Ventiltrieb einer Brennkraftmaschine

Also Published As

Publication number Publication date
BR9914635A (pt) 2001-07-03
DE69914348T3 (de) 2011-02-03
EP1119689B2 (de) 2010-04-07
DE69914348T2 (de) 2004-11-04
IT1302601B1 (it) 2000-09-29
WO2000020730A1 (en) 2000-04-13
JP4558938B2 (ja) 2010-10-06
ITMI982136A1 (it) 2000-04-06
JP2002526707A (ja) 2002-08-20
ATE258271T1 (de) 2004-02-15
EP1119689B1 (de) 2004-01-21
DE69914348D1 (de) 2004-02-26

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