DE3625664C2 - - Google Patents

Info

Publication number
DE3625664C2
DE3625664C2 DE3625664A DE3625664A DE3625664C2 DE 3625664 C2 DE3625664 C2 DE 3625664C2 DE 3625664 A DE3625664 A DE 3625664A DE 3625664 A DE3625664 A DE 3625664A DE 3625664 C2 DE3625664 C2 DE 3625664C2
Authority
DE
Germany
Prior art keywords
piston
hydraulic
control
valve
master
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
Application number
DE3625664A
Other languages
German (de)
English (en)
Other versions
DE3625664A1 (de
Inventor
Jurij 8034 Germering De Gartner
Peter 8000 Muenchen De Langen
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE19863625664 priority Critical patent/DE3625664A1/de
Publication of DE3625664A1 publication Critical patent/DE3625664A1/de
Application granted granted Critical
Publication of DE3625664C2 publication Critical patent/DE3625664C2/de
Granted 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0031—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of tappet or pushrod length
    • 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
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • F01L9/12—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem
    • F01L9/14—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column with a liquid chamber between a piston actuated by a cam and a piston acting on a valve stem the volume of the chamber being variable, e.g. for varying the lift or the timing of a valve
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34446—Fluid accumulators for the feeding circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
DE19863625664 1986-07-29 1986-07-29 Vorrichtung zur beeinflussung des von einem nocken gesteuerten ventilhubes Granted DE3625664A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19863625664 DE3625664A1 (de) 1986-07-29 1986-07-29 Vorrichtung zur beeinflussung des von einem nocken gesteuerten ventilhubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19863625664 DE3625664A1 (de) 1986-07-29 1986-07-29 Vorrichtung zur beeinflussung des von einem nocken gesteuerten ventilhubes

Publications (2)

Publication Number Publication Date
DE3625664A1 DE3625664A1 (de) 1988-02-04
DE3625664C2 true DE3625664C2 (fi) 1988-06-09

Family

ID=6306237

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19863625664 Granted DE3625664A1 (de) 1986-07-29 1986-07-29 Vorrichtung zur beeinflussung des von einem nocken gesteuerten ventilhubes

Country Status (1)

Country Link
DE (1) DE3625664A1 (fi)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3809953C1 (fi) * 1988-03-24 1989-08-24 Bayerische Motoren Werke Ag, 8000 Muenchen, De
DE3833459A1 (de) * 1988-10-01 1990-04-05 Audi Ag Hydraulischer ventiltrieb fuer eine brennkraftmaschine
DE10125544C2 (de) * 2001-05-23 2003-07-10 Mtu Friedrichshafen Gmbh Einrichtung zur hydraulischen Betätigung eines Ventils
FI123927B (fi) * 2009-07-07 2013-12-31 Waertsilae Finland Oy Mäntämoottorin imuventtiilin ohjausjärjestely
EP3156619B1 (en) * 2015-10-13 2018-06-06 C.R.F. Società Consortile per Azioni System and method for variable actuation of a valve of an internal combustion engine, with a device for dampening pressure oscillations

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448311B2 (de) * 1974-10-10 1978-03-23 Maschinenfabrik Augsburg-Nuernberg Ag, 8500 Nuernberg Regelbare hydraulische Ventilsteuerung für Hubkolbenkraft- oder Arbeitsmaschinen
DE3048887A1 (de) * 1980-12-23 1982-07-22 Audi Nsu Auto Union Ag, 7107 Neckarsulm Steuerbarer ventiltrieb, insbesondere fuer die gaswechselventile einer hubkolben-brennkraftmaschine

Also Published As

Publication number Publication date
DE3625664A1 (de) 1988-02-04

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee