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EP2060755A3 - Valve driving mechanism unit in a combustion engine - Google Patents

Valve driving mechanism unit in a combustion engine Download PDF

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Publication number
EP2060755A3
EP2060755A3 EP08167286A EP08167286A EP2060755A3 EP 2060755 A3 EP2060755 A3 EP 2060755A3 EP 08167286 A EP08167286 A EP 08167286A EP 08167286 A EP08167286 A EP 08167286A EP 2060755 A3 EP2060755 A3 EP 2060755A3
Authority
EP
European Patent Office
Prior art keywords
housing
recess
combustion engine
slave
bore
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
EP08167286A
Other languages
German (de)
French (fr)
Other versions
EP2060755A2 (en
EP2060755B1 (en
Inventor
Calin Petru Itoafa
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.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler KG
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 Schaeffler KG filed Critical Schaeffler KG
Publication of EP2060755A2 publication Critical patent/EP2060755A2/en
Publication of EP2060755A3 publication Critical patent/EP2060755A3/en
Application granted granted Critical
Publication of EP2060755B1 publication Critical patent/EP2060755B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

Vorgeschlagen ist eine Baueinheit (1) eines Ventiltriebs einer Brennkraftmaschine mit hydraulisch variabler Gaswechselventilbetätigung, umfassend ein Gehäuse (2) mit einer Ausnehmung (3), ein fest darin eingepasstes Nehmergehäuse (4) und einen in einer Bohrung (5) des Nehmergehäuses axialbeweglich gelagerten Nehmerkolben (6), der einerseits mit einem Gaswechselventil (9) zusammenwirkt und andererseits eine in der Bohrung verlaufende Nehmerkammer (10) begrenzt, wobei das durch die Wandung (25) der Ausnehmung radial ausgerichtete Nehmergehäuse eine einem Boden (19) der Ausnehmung zugewandte Stirnseite (18) mit einer Dichtfläche (27) aufweist, die zumindest mittelbar gegen den Boden verspannt ist. Dabei soll im Spannungsfluss zwischen der Stirnseite und dem Boden zumindest ein Spaltausgleichselement mit vorbestimmter axialer Verformbarkeit zur Erzielung einer wenigstens nahezu vollständigen Dichtwirkung der Dichtfläche angeordnet sein.

Figure imgaf001
Proposed is a structural unit (1) of a valve drive of an internal combustion engine with hydraulically variable gas exchange valve actuation, comprising a housing (2) with a recess (3), a firmly housed therein slave housing (4) and in a bore (5) of the slave housing axially movably mounted slave piston (6) which on the one hand cooperates with a gas exchange valve (9) and on the other hand delimits a receiving chamber (10) extending in the bore, wherein the housing housing radially oriented through the wall (25) of the recess has a front side facing a bottom (19) of the recess (Fig. 18) with a sealing surface (27), which is clamped at least indirectly against the ground. In this case, at least one gap compensation element with predetermined axial deformability should be arranged in the voltage flow between the end face and the bottom to achieve an at least almost complete sealing effect of the sealing surface.
Figure imgaf001
EP08167286A 2007-11-13 2008-10-22 Valve driving mechanism unit in a combustion engine Not-in-force EP2060755B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007053981A DE102007053981A1 (en) 2007-11-13 2007-11-13 Assembly of a valve train of an internal combustion engine

Publications (3)

Publication Number Publication Date
EP2060755A2 EP2060755A2 (en) 2009-05-20
EP2060755A3 true EP2060755A3 (en) 2011-08-31
EP2060755B1 EP2060755B1 (en) 2012-09-05

Family

ID=40414026

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08167286A Not-in-force EP2060755B1 (en) 2007-11-13 2008-10-22 Valve driving mechanism unit in a combustion engine

Country Status (2)

Country Link
EP (1) EP2060755B1 (en)
DE (1) DE102007053981A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009043649A1 (en) 2009-09-29 2011-03-31 Schaeffler Technologies Gmbh & Co. Kg Hydraulic valve train for use in cylinder head for stroke variable actuation of charge-cycle-valve in internal combustion engine, has valve cap running within cylinder section and axially supported towards base section using fixation units
DE102009043659A1 (en) 2009-09-29 2011-03-31 Schaeffler Technologies Gmbh & Co. Kg Hydraulic valve-train assembly for variable operation of gas exchange valve of internal combustion engine, has valve element with internal housing fastened in external housing, where seat is formed and cap is held at internal housing
DE102011004403A1 (en) * 2011-02-18 2012-08-23 Schaeffler Technologies Gmbh & Co. Kg Hydraulic valve train of an internal combustion engine
DE102012212054A1 (en) * 2012-07-11 2014-01-16 Schaeffler Technologies AG & Co. KG Pump unit for transmitting mechanical actuating force to hydraulic medium of hydraulic system, has actuating piston that is urged directly or indirectly relative to housing by spring unit
DE102019128826B4 (en) * 2019-10-25 2022-09-29 Schaeffler Technologies AG & Co. KG Hydraulic unit of an electrohydraulic gas exchange valve control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245799A2 (en) * 2001-03-23 2002-10-02 C.R.F. Società Consortile per Azioni Internal-combustion engine with variable-operation valves and auxiliary hydraulic tappet
EP1674673A1 (en) * 2004-12-23 2006-06-28 C.R.F. Società Consortile per Azioni Internal combustion engine with hydraulic variable valves

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20020234A1 (en) 2002-03-15 2003-09-15 Fiat Ricerche INTERNAL COMBUSTION MULTI-CYLINDER ENGINE WITH ELECTRONICALLY CONTROLLED HYDRAULIC DEVICE FOR VARIABLE OPERATION OF VALVES AND D

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245799A2 (en) * 2001-03-23 2002-10-02 C.R.F. Società Consortile per Azioni Internal-combustion engine with variable-operation valves and auxiliary hydraulic tappet
EP1674673A1 (en) * 2004-12-23 2006-06-28 C.R.F. Società Consortile per Azioni Internal combustion engine with hydraulic variable valves

Also Published As

Publication number Publication date
EP2060755A2 (en) 2009-05-20
EP2060755B1 (en) 2012-09-05
DE102007053981A1 (en) 2009-05-14

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