EP1119689B2 - Valve train assembly - Google Patents

Valve train assembly Download PDF

Info

Publication number
EP1119689B2
EP1119689B2 EP99970148A EP99970148A EP1119689B2 EP 1119689 B2 EP1119689 B2 EP 1119689B2 EP 99970148 A EP99970148 A EP 99970148A EP 99970148 A EP99970148 A EP 99970148A EP 1119689 B2 EP1119689 B2 EP 1119689B2
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.)
Expired - Lifetime
Application number
EP99970148A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1119689A1 (en
EP1119689B1 (en
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 SRL
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(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Eaton SRL filed Critical Eaton SRL
Publication of EP1119689A1 publication Critical patent/EP1119689A1/en
Application granted granted Critical
Publication of EP1119689B1 publication Critical patent/EP1119689B1/en
Publication of EP1119689B2 publication Critical patent/EP1119689B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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 combustion engine, and to rocker arms for such an assembly.
  • the invention is particularly but not exclusively related to arrangements in which the number of parts in the assembly is reduced, in which various parts can be pre-assembled to facilitate engine assembly, and in which various pans are made more simply.
  • JP58-88412 describes a valve train assembly comprising: a valve train carrier having a plurality of individual rocker arm fulcra each of which forms part of a hydraulic lash adjuster; and a plurality of rocker arms, each rocker arm being attached to a respective fulcrum to form a self-supporting assembly and being pivotable about the fulcrum; wherein the assembly has been manufactured and then pre-assembled separately from, but is operatively attachable to, an internal combustion engine having a camshaft such that the rocker arms are movable by cams of the camshaft in order to operate valves of the engine, wherein each rocker arm has a part-spherical surface for mating with a corresponding surface of the fulcrum to which it is attached.
  • valve train assembly of claim 1 According to the invention there is provided the valve train assembly of claim 1.
  • a valve train assembly for a internal combustion engine comprises a valve train carrier having a plurality of individual rocker arm fulcra, and a rocker arm attached to each fulcrum.
  • the carrier may also have one or more camshafts mounted thereto.
  • Such an arrangement can be provided as a pre-assembled unit for fitting to a cylinder head having valves mounted therein. thus substantially facilitating the assembly of an engine.
  • Each fulcrum may form part of a hydraulic lash adjuster. Accordingly, since the lash adjusters would be fixedly mounted to the carrier, they are more easily supplied with oil, so that a smaller oil pump producing relatively low pressure can be used.
  • each rocker arm and its associated fulcrum have co-operating part-spherical surfaces which permit not only the pivoting motion required for operating the valves, but also a degree of rotation about the length of the rocker arm, to provide a self-adjusting function.
  • the rocker arm has a part-spherical recess into which a part-spherical projection is located.
  • the profile of the recess may comprise several, e.g. three, spherical segments of slightly different diameter tangential to each other, sometimes referred to as a gothic socket.
  • the rocker arm may be attached to the projection by means of a clip, possibly made of spring steel. which is fitted over the head of the projection.
  • rocker arms do not need to be fitted to rocker axles, they may be made smaller and lighter compared to existing aluminium or steel rockers.
  • the rockers are made of pressed sheet metal (with the final thickness possibly increased or decreased by the pressing operation to provide suitable weight/strength properties), and their lightness enables the use of lighter valve springs resulting in lower energy consumption.
  • rockers of equal length for all the valves. Accordingly, the rockers can be substantially identical, thereby reducing manufacturing costs.
  • Fig. 1 shows a prior art rocker (B') made of pressed aluminium, and comprising a lever of the first order mounted on a fixed axle (70), which also 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 reciprocating and pivoting hydraulic lash adjuster, referred to also as a tappet (80).
  • the tappet has a spigot or projection (81) at the base acting on the head of a valve (V).
  • a double row of camshafts (A') acts on convex surfaces of rollers (R').
  • Fig. 2 shows an example of a rocker arm arrangement according to the present invention.
  • the rocker (B) of the present invention is again a lever of the first order, i.e. it is a centre-pivoted rocker arm.
  • the rocker (B) is mounted on a tappet (4) placed between a first end of the rocker (B), which is fitted with a roller (R) displaced and pushed against a cam (C) on the camshaft, and a second end, which transmits the pressure to open the poppet 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 (12) and (12'), linked by an upper plate (13), with which it forms a U-shaped section, and is formed by bending or stamping a sheet of steel.
  • a hemispherical recess (14) is formed in the plate (13), suitable for mating with the hemispherical head (41) of a spigot or projection (42) which is part of a lash adjuster or tappet (4).
  • the tappet (4) is fitted in its own fixed seat (45, Fig. 7 ) formed by boring an aluminium cover (L) of the engine head.
  • the cover (L) constitutes a valve train carrier, and is discussed further below.
  • this spigot forms a fulcrum about which the rocker arm (B) can reciprocate in order to operate the valve (V), and around which the rocker arm may be laterally turned. It will be noted in particular that the rocker arm can rotate about an axis X ( Fig. 4 ) and about the axis of the spigot (42), to provide a degree of self-adjustment for the purposes set out below.
  • Rocker (B) comprises at one end a transverse opening (15) into which a pivoting trunnion (16) is fitted, the trunnion (16) having opposing recesses (17), one of which presses onto the head of the stem of the valve (V), adjusting itself in accordance with the relative movement of the rocker arm (B) of the valve shaft, which may vary depending on the type of engine.
  • roller (R) having needle bearings and located on an axle (20) extending through openings (22) provided in flanges (12) and (12').
  • Roller (R) is very simple, with a straight cylindrical outside surface which closely fits the outside surface of cam (C) since as described above the rocker, with its fulcrum on the hemispherical recess (14), automatically compensates for any imperfection in transverse movement, thus making a convex outside surface, as required in customary design, unnecessary.
  • 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 Fig. 5 ).
  • the resilient sheet has an inlet (27) at the top for the purpose of lubricating the trunnion (16).
  • the sheet (30) may be made of spring steel, and has an aperture which allows the rocker arm (B) to be easily snap-fitted over the head (41) of the spigot (42) and thus attached to the cover (L). The sheet (30) thus retains the rocker arm (B) on the cover (L) without inhibiting any intended operational movement of the rocker arm.
  • the projection or spigot (42) has a relatively narrow neck leading to the enlarged, part-spherical head (41), so that the aperture in the sheet (30), which has a diameter slightly larger than that of the neck, can be used to hold the rocker arm in place.
  • the aperture is elongate, with its longitudinal axis extended substantially parallel to the length of the rocker arm, so as to facilitate fitting the rocker arm to the tappet (4), and to permit a degree of freedom of movement in the longitudinal direction to ensure proper engagement with the cam shaft and valve.
  • alternative arrangements are possible.
  • the rocker arm could be fastened to the head (41) by means of a rivet or other member extending through the rocker arm into a recess at the end of 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.
  • the means attaching the rocker arm to the fulcrum be fairly loose, and arranged so as not to inhibit the intended operational movement of the rocker arm.
  • Fig. 7 is a detailed view of the tappet (4), which keeps rocker (B) pressed against one end of the valve head (V) by means of the pivoting trunnion (16), and at the other end against the cam (C) by means of roller (R).
  • Within the lower part of the chamber (43) is a high pressure tappet chamber (47), whilst above is a plunger (48) which houses a low-pressure oil reservoir (49). The oil is supplied through the inlet (50) and channels (51) in the cover (L).
  • Inlets (46) and (46') are provided in the spigot (42) for the purpose of lubricating the hemispherical end (41) which acts as the fulcrum.
  • FIGs. 8 and 9 show from the side and from above, respectively, the arrangement of a valve control train using rockers (B1), (B2), ... as described above, for operating valves V1, V2, ... in an internal combustion engine with a single central camshaft (A).
  • the engine cylinder head has a lower head part (65) into which the valves (V1) and (V2) are installed. Their springs (M) are located in recesses (60) of the lower head (65).
  • valve train carrier formed by the cover (L) has fitted thereto the rocker arms (B1) and (B2), together with any other rocker arms required for the engine (see Fig. 9 ).
  • This therefore forms a self-supporting assembly which can be manufactured and sold separately from the rest of the engine and provided in a pre-assembled state ready for fitting to the engine.
  • the individual fitting of the rocker arms can be carried out as a separate operation, so the final assembly of the engine is significantly simpler.
  • valve carrier can supply different versions of the valve carrier, all for fitting to the same engine head, but made to different specifications.
  • one version may have hydraulic lash adjusters and rocker arms provided with rollers, and another, less-expensive one may have mechanical lash adjusters and a fixed cam-engaging surface on the rocker arms rather than rollers. This facilitates the production of different types of engines, suited to the customer, while still enabling a simple assembly procedure.
  • the location of the respective fulcra on the cover (L) can be selected such that all the rocker arms may have the same length, and therefore can if desired be constructed identically.
  • the camshaft is also fitted to the cover (L) during pre-assembly.
  • Figs. 10 and 11 show an alternative embodiment of the invention, in which twin camshafts (A1, A2) drive respective rows of rocker arms (B).
  • the aluminium valve train carrier (L) is best illustrated in Fig. 11 , which shows identical rocker arms (B) mounted in two lines, the arms within each line being positioned in a staggered arrangement so that they are suitably located for driving the inlet and outlet exhaust valves.
  • the camshafts (A1, A2) are also preferably mounted to the carrier (L) before the entire assembly is fitted to the lower cylinder head of the engine.
  • the carriers (L) of either embodiment may have channels for distributing oil to the valve trains; indeed, all the required oil channels may be located in the carrier.

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 Valve train assembly Expired - Lifetime EP1119689B2 (en)

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 EP1119689A1 (en) 2001-08-01
EP1119689B1 EP1119689B1 (en) 2004-01-21
EP1119689B2 true EP1119689B2 (en) 2010-04-07

Family

ID=11380809

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99970148A Expired - Lifetime EP1119689B2 (en) 1998-10-05 1999-10-05 Valve train assembly

Country Status (7)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022109243A1 (de) 2022-04-14 2023-10-19 Bayerische Motoren Werke Aktiengesellschaft Verbrennungskraftmaschine für ein Kraftfahrzeug sowie Kraftfahrzeug

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
ES2373367T3 (es) * 2009-03-10 2012-02-02 Schaeffler Technologies Gmbh & Co. Kg Soporte de palanca basculante para un mecanismo de v�?lvula de un motor de combustión interna.
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

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 (it) * 1990-01-27 1991-10-08

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022109243A1 (de) 2022-04-14 2023-10-19 Bayerische Motoren Werke Aktiengesellschaft Verbrennungskraftmaschine für ein Kraftfahrzeug sowie Kraftfahrzeug

Also Published As

Publication number Publication date
BR9914635A (pt) 2001-07-03
EP1119689A1 (en) 2001-08-01
DE69914348T3 (de) 2011-02-03
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 (en) 2004-01-21
DE69914348D1 (de) 2004-02-26

Similar Documents

Publication Publication Date Title
EP1119689B2 (en) Valve train assembly
US4697473A (en) Rocker arm with cam-contacting roller
US5546899A (en) Valve train load transfer device for use with hydraulic roller lifters
EP0512698B1 (en) Adjustable valve system for an internal combustion engine
EP0608925A1 (en) Compact valve-lifters
US20030209217A1 (en) Two-step finger follower rocker arm assembly
US20070119397A1 (en) Engine and valvetrain with dual pushrod lifters and independent lash adjustment
GB2248667A (en) Rocker arm
US5259346A (en) Rocker arm of the cam-follower type for operating two valves
US20080283011A1 (en) Pushrod engine with multiple independent lash adjusters for each pushrod
US5864948A (en) Method for increasing available space for an intake/exhaust port in an internal combustion engine
CN110159383B (zh) 带有间隙调节的可切换的摇臂
US3626469A (en) Valve gear
US20080202456A1 (en) Engine/valvetrain with shaft-mounted cam followers having dual independent lash adjusters
CA1275016A (en) Engine rocker arm assembly
US5372097A (en) Self-lubricating cam follower
US5094197A (en) Timing system, particularly for an internal combustion engine with a number of valves per cyclinder
US11828205B2 (en) Latch assembly and compact rocker arm assembly
EP1275824B1 (en) Modular valvetrain and cylinder head structure
EP0570963B1 (en) A valve control system for a variable-timing internal combustion engine, particularly for an engine with several valves per cylinder
US4517935A (en) Device for transmitting movement
EP0129961B1 (en) Reciprocating internal combustion engine with valve train means
EP0767292A1 (en) A rocker arm assembly for an internal combustion engine
EP0444562A1 (en) Timing system, particularly for an internal combustion engine with a number of valves per cylinder
EP0125096A2 (en) Mechanism for variably controlling an internal combustion engine valve

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: 20010504

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17Q First examination report despatched

Effective date: 20020424

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

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: 20040121

Ref country code: LI

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: 20040121

Ref country code: FI

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: 20040121

Ref country code: CY

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: 20040121

Ref country code: CH

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: 20040121

Ref country code: BE

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: 20040121

Ref country code: AT

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: 20040121

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69914348

Country of ref document: DE

Date of ref document: 20040226

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

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: 20040421

Ref country code: GR

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: 20040421

Ref country code: DK

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: 20040421

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: 20040502

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
26 Opposition filed

Opponent name: INA-SCHAEFFLER KG

Effective date: 20040519

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041005

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041005

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041031

ET Fr: translation filed
PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: FORD-WERKE AKTIENGESELLSCHAFT

Effective date: 20041021

Opponent name: INA-SCHAEFFLER KG

Effective date: 20040519

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PLAB Opposition data, opponent's data or that of the opponent's representative modified

Free format text: ORIGINAL CODE: 0009299OPPO

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: EATON S.R.L.

PLBP Opposition withdrawn

Free format text: ORIGINAL CODE: 0009264

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

APBQ Date of receipt of statement of grounds of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA3O

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040621

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20100407

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20041006

REG Reference to a national code

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: DE

Ref legal event code: 8570

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 18

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20180919

Year of fee payment: 20

Ref country code: FR

Payment date: 20180920

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20180925

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69914348

Country of ref document: DE

Representative=s name: WAGNER & GEYER PARTNERSCHAFT MBB PATENT- UND R, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 69914348

Country of ref document: DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 69914348

Country of ref document: DE

Owner name: EATON INTELLIGENT POWER LIMITED, IE

Free format text: FORMER OWNER: EATON S.R.L., RIVAROLO CANAVESE, TURIN/TORINO, IT

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180819

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69914348

Country of ref document: DE

Representative=s name: WAGNER & GEYER PARTNERSCHAFT MBB PATENT- UND R, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69914348

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20191004

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 EXPIRATION OF PROTECTION

Effective date: 20191004