EP1063391A2 - Commande de soupape pour un moteur à combustion interne - Google Patents

Commande de soupape pour un moteur à combustion interne Download PDF

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Publication number
EP1063391A2
EP1063391A2 EP00112962A EP00112962A EP1063391A2 EP 1063391 A2 EP1063391 A2 EP 1063391A2 EP 00112962 A EP00112962 A EP 00112962A EP 00112962 A EP00112962 A EP 00112962A EP 1063391 A2 EP1063391 A2 EP 1063391A2
Authority
EP
European Patent Office
Prior art keywords
valve
train according
valve train
collar
spring
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
EP00112962A
Other languages
German (de)
English (en)
Other versions
EP1063391B1 (fr
EP1063391A3 (fr
Inventor
Walter Strzoda
Klaus Dr. Gebauer
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.)
TRW Deutschland GmbH
Original Assignee
TRW Deutschland GmbH
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
Application filed by TRW Deutschland GmbH filed Critical TRW Deutschland GmbH
Publication of EP1063391A2 publication Critical patent/EP1063391A2/fr
Publication of EP1063391A3 publication Critical patent/EP1063391A3/fr
Application granted granted Critical
Publication of EP1063391B1 publication Critical patent/EP1063391B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • 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
    • F01L1/32—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear
    • 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/10—Connecting springs to valve members

Definitions

  • the invention relates to a valve train for controlling the gas exchange in Internal combustion engines with the valve always in its required position holding valve spring between the valve plate and one towards the Valve axis adjustable valve spring bearing is clamped.
  • valve clearance between the tappet foot and the camshaft can be changed and thus adjusted by screwing.
  • a ring gear-like locking device is provided, in which the ram foot engages with external teeth.
  • the valve clearance can also be adjusted via the armature of an electromagnetic drive. In this valve lash adjuster, too, the distance between the actuating element and the valve stem is changed via a locking screw that oscillates with the armature.
  • the invention has for its object to provide a valve train of the type mentioned with which the setting of a defined spring preload can be carried out for each individual valve. Furthermore, a suitable connection between the parts that allow the setting of a defined spring preload and the valve stem seal should simplify securing individual parts against loss and assembly and disassembly at the customer.
  • the invention achieves the object by means of a valve train with the characterizing features of patent claim 1. Advantageous refinements are the subject of the subclaims and are explained below.
  • the solution according to the invention enables the valve spring preload to be set to a defined value, e.g. B. also with a camshaft-less valve train.
  • a defined value e.g. B. also with a camshaft-less valve train.
  • a camshaft-less valve train can reduce energy consumption to one minimum value can be reduced.
  • camshaftless, e.g. B. electromechanical Valve train the spring preloads of all valves can be set to the same level become. Different tolerances can be eliminated. Therefore, the energy requirement for all valves are the same and low according to the theoretically required force. If such a setting were not used, the energy consumption would have to be higher can be used to overcome even high forces of strong springs.
  • the adjustable valve spring bearing 1 consists of two interlocking adjusting rings 2 and 3.
  • the inner collar 2 has a radially inwardly extending Support surface 4 for supporting the valve spring 12.
  • the inner collar is in his Provide an upper collar 5 in the upper area. This points over his Set pressure surfaces 6a to 6c distributed around the circumference. However, it can also more than three signal pressure areas distributed over the circumference Find.
  • the outer circumference of the federal government 5 shows several, distributed over its circumference arranged flats 7 to attach an adjusting tool to the inner Turn the collar 2 against the outer one to adjust the spring.
  • the outer ring 3 is provided on its side facing the actuating pressure surfaces 6a to 6c of the inner adjusting ring 2 with congruent actuating pressure surfaces 8a to 8c which are operatively connected to the actuating pressure surfaces 6a to 6c. All signal pressure areas are profiled to create a positive connection between the areas involved.
  • the example shows a directional toothing with flat tooth flanks of different lengths and included flank or wedge angles of 112 °, as the details of FIGS. 8 and 11 show.
  • the inner collar 2 in Direction of the arrow 11 rotated so that the locking teeth 9 with their long Flanks 9a can slide on the long flanks 10a of the locking teeth 10 until they are with their steeper short flanks 9b behind the corresponding short flanks 10b Grasp locking teeth 10 of the outer collar. Because the teeth on thread-like increasing signal pressure surfaces are arranged, the bearing surface 4 raised and the valve spring increasingly compressed until the spring force has reached a predetermined value. In this way, every single valve spring of an engine can be set to the same value.
  • FIGS. 12 to 15 show a further embodiment of the invention, wherein identical parts are provided with the same reference numbers.
  • the outer adjusting ring 103 resting on the cylinder head (not shown) is provided with a collar-shaped extension 117 which engages through the central bore 118 of the inner adjusting ring 102.
  • depressions 120 are provided for receiving correspondingly shaped thickenings of the cylinder head surface.
  • the outline of the inner adjusting ring shows a hexagon for attaching an adjusting tool.
  • FIG. 15 shows the assembly example of a valve 20, the stem 21 of which is conventional Is guided in a valve guide 22 seated in the cylinder head 23.
  • the valve is at its upper end by multi-groove valve cone pieces 24, which with their Raising beads in the recess 25 of the valve stem end with the not shown Spring plate connected.
  • the valve stem 21 is provided with a valve stem seal 26.
  • the outer The end of the valve stem seal is sealed against by a hose spring 27 the valve stem surface pressed.
  • the inner end of the valve stem seal is with a metal bushing 28 vulcanized together. This sits in under slight pressure the central bore 121 of the outer collar 103.
  • the press fit ensures a captive connection between the valve stem seal and the outer Collar 103 after pre-assembly.
  • the gearing between the a locking compound for example an adhesive, is introduced into both adjusting rings that hardens under pressure and ensures a captive connection.
  • the edge of the collar-shaped extension 117 can be slightly deformed, for example, so that the collars 102 and 103 and the Collar with press fit valve stem seal 26 an captive unit form. It is after inserting the valve in the cylinder head over the Valve stem end pushed and positioned on the cylinder head. In addition to the Incorrect assembly is impossible if individual elements cannot be lost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP00112962A 1999-06-21 2000-06-20 Commande de soupape pour un moteur à combustion interne Expired - Lifetime EP1063391B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928284A DE19928284A1 (de) 1999-06-21 1999-06-21 Ventiltrieb für Verbrennungskraftmaschine
DE19928284 1999-06-21

Publications (3)

Publication Number Publication Date
EP1063391A2 true EP1063391A2 (fr) 2000-12-27
EP1063391A3 EP1063391A3 (fr) 2001-05-02
EP1063391B1 EP1063391B1 (fr) 2004-10-20

Family

ID=7911956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00112962A Expired - Lifetime EP1063391B1 (fr) 1999-06-21 2000-06-20 Commande de soupape pour un moteur à combustion interne

Country Status (3)

Country Link
US (1) US6279526B1 (fr)
EP (1) EP1063391B1 (fr)
DE (2) DE19928284A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437848B (zh) * 2013-08-29 2015-12-02 刘军 发动机气门弹簧张力调节装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009015428B4 (de) * 2009-03-27 2015-09-10 Unovatis Gmbh Kompensation einer altersbedingten Längenänderung eines Stellelements aus einer Formgedächtnislegierung
CN102562211A (zh) * 2012-02-21 2012-07-11 奇瑞汽车股份有限公司 一种发动机气门弹簧下座
JP6083398B2 (ja) * 2014-02-21 2017-02-22 トヨタ自動車株式会社 バルブ回転装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439674A1 (de) 1973-08-18 1975-03-06 British Leyland Uk Ltd Zusammengesetztes ventil
DE19741568A1 (de) 1997-09-20 1999-03-25 Heinz Leiber Ventil für einen Verbrennungsmotor

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3114361A (en) * 1961-10-24 1963-12-17 Wilbur L Mullen Spring tension device
US4469057A (en) * 1979-07-09 1984-09-04 Black Alfred A Poppet valve spring retainer with integral mechanical adjustable tappet
EP0172197A4 (fr) * 1984-02-20 1986-07-24 Reginald John Hardy Entrainement de soupape en champignon.
US5044330A (en) * 1990-07-06 1991-09-03 Havens Elwood L Valve spring spacer
DE4129637C2 (de) * 1991-09-06 1998-04-09 Schaeffler Waelzlager Ohg Einrichtung zur Änderung der Federkraft einer Ventilfeder
US5720468A (en) * 1992-10-05 1998-02-24 Aura Systems, Inc. Staggered electromagnetically actuated valve design
DE4403510C2 (de) * 1994-02-04 1995-11-30 Bruss Dichtungstechnik Ventilmodul für Brennkraftmaschinen und Verfahren zu dessen Einbau
KR0164488B1 (ko) * 1994-08-29 1998-12-15 전성원 외부공기를 이용한 밸브리프트 조정장치
US5558054A (en) * 1995-06-07 1996-09-24 Southwest Research Institute Variable preload system for valve springs
DE19641568A1 (de) 1995-10-09 1997-06-19 Edmund Florczak Sicherheitsschloß sowie Verfahren zu seiner Handhabung
DE19747009C2 (de) * 1997-10-24 2000-11-16 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2439674A1 (de) 1973-08-18 1975-03-06 British Leyland Uk Ltd Zusammengesetztes ventil
DE19741568A1 (de) 1997-09-20 1999-03-25 Heinz Leiber Ventil für einen Verbrennungsmotor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103437848B (zh) * 2013-08-29 2015-12-02 刘军 发动机气门弹簧张力调节装置

Also Published As

Publication number Publication date
EP1063391B1 (fr) 2004-10-20
EP1063391A3 (fr) 2001-05-02
DE50008293D1 (de) 2004-11-25
US6279526B1 (en) 2001-08-28
DE19928284A1 (de) 2000-12-28

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