EP0191376B1 - Entraînement de soupape avec transmission hydraulique - Google Patents

Entraînement de soupape avec transmission hydraulique Download PDF

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Publication number
EP0191376B1
EP0191376B1 EP86101217A EP86101217A EP0191376B1 EP 0191376 B1 EP0191376 B1 EP 0191376B1 EP 86101217 A EP86101217 A EP 86101217A EP 86101217 A EP86101217 A EP 86101217A EP 0191376 B1 EP0191376 B1 EP 0191376B1
Authority
EP
European Patent Office
Prior art keywords
piston
auxiliary shaft
valve
hydraulic
valve drive
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
EP86101217A
Other languages
German (de)
English (en)
Other versions
EP0191376A1 (fr
Inventor
Gabriel Dipl.-Ing. Tittizer
Ewald Dipl.-Ing. Junghans
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.)
Interatom Internationale Atomreaktorbau GmbH
Original Assignee
Interatom Internationale Atomreaktorbau 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
Priority claimed from DE19853504639 external-priority patent/DE3504639A1/de
Application filed by Interatom Internationale Atomreaktorbau GmbH filed Critical Interatom Internationale Atomreaktorbau GmbH
Priority to AT86101217T priority Critical patent/ATE34803T1/de
Publication of EP0191376A1 publication Critical patent/EP0191376A1/fr
Application granted granted Critical
Publication of EP0191376B1 publication Critical patent/EP0191376B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B7/00—Systems in which the movement produced is definitely related to the output of a volumetric pump; Telemotors
    • F15B7/02—Systems with continuously-operating input and output apparatus
    • 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
    • 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
    • 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
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder

Definitions

  • the present application relates to hydraulic control for valves of internal combustion engines, i.e. of four-stroke gasoline or diesel engines according to the preamble of claim 1.
  • Such machines have at least 2 valves per cylinder, which, according to the currently preferred technique, are pressed into their closed position by spring force n and thereby brought into their open position in that a force opposing and exceeding the spring force is applied to the valve stem; this is done in such a way that cams are mounted on an auxiliary shaft driven by the crankshaft at half the speed, which apply the required force to the valve lifters via rocker arms.
  • Hydraulic valve drives are known, for example from DE-C-46 74 40. This results in greater freedom of movement in the coupling between the crankshaft and the closing element of the valve. In order to compensate for losses of hydraulic fluid and to prevent the occurrence of air bubbles in the system, this document suggests that the displacement of the primary, active hydraulic piston be dimensioned somewhat larger than that of the secondary, passive piston and the excess conveyed in this way.
  • the object of the present invention is to enable a larger valve lift while at the same time adhering to the conventional design of the motors mentioned and at the same time to eliminate parts which are susceptible to wear. This is intended to achieve a more favorable control behavior of the valves.
  • the hydraulic power transmission 1 can translate the movement of the first piston in that the second piston has a noticeably smaller cross section than the first piston.
  • the former follows the movement imposed by the latter with a stroke which is enlarged in the ratio of the cross-sectional areas when the overall system is closed.
  • FIG. 1 An embodiment is shown in the drawing, namely in the longitudinal axial section.
  • the figure partially shows the combustion chamber 1 of a cylinder of an internal combustion engine, to which a fuel / air mixture is supplied via an intake duct 2; an outlet valve can be designed in basically the same way.
  • the intake duct 2 is closed off from the combustion chamber 1 by a valve disk 4, which forms a unit with a tappet 5.
  • the valve 4 is loaded in the direction of its closed position by a helical spring 6, which is supported on an abutment 7.
  • a crankshaft of the machine (not shown here) with a reduction ratio of 2: 1 drives an auxiliary shaft 8 with an out-of-round cross-section (exaggerated for clarity), on which a roller bearing is attached.
  • the rolling bearing consists in a known manner of an inner race 9, rolling elements 10 (balls or rollers) and an outer race 11.
  • the races 9, 11 are capable of following the deformations and material to a certain degree, based on dimensions and material, without these components being stressed beyond their elastic limit.
  • the outer race 11 is fixed in space so that it cannot follow the rotational movements of the auxiliary shaft 8 and the inner race 9 fastened thereon in the circumferential direction, but instead performs an oscillating radial movement, depending on the angular position of the auxiliary shaft 8 in question
  • Their shape is not necessarily a double oval, as shown here, but will have to be selected by the person skilled in the art depending on the desired valve timing, a shape also being possible which is not unlike that of the cams conventionally used for valve controls.
  • the movement of the outer race 11 communicates with a first piston 12, which slides in a first hydraulic cylinder 13 and is always pressed against the outer race 11 by a further helical spring 14.
  • the first hydraulic cylinder 13 is connected to a second hydraulic cylinder 16 via a line 15 that can be designed almost arbitrarily in terms of length and shape, in which a second piston 17 slides, which acts on the valve stem 5 on its part. Since the displacement swept by both pistons 12, 17 must be the same and the diameter D of the first cylinder 13 is larger than that d of the second cylinder 16, the relatively small reciprocating movement h of the first piston 12 converts into a correspondingly larger movement H of the second piston 17. The size of the corresponding stroke of the valve 4 can thus be increased beyond what can be achieved with the aid of conventional camshafts.
  • the outer race 11 simultaneously actuates a plurality of first pistons 13 distributed over its circumference, which, via the similar hydraulic transmissions described, control as many valves 4 (not shown here), in the example shown, the four intake valves of a four-cylinder engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (2)

1. Commande hydraulique pour soupapes (4) de moteurs à combustion interne, comprenant un arbre auxiliaire (8) entraîné par le vilebrequin et possédant une section droite non circulaire, de même que pour chaque soupape, un premier piston (12) actionné par l'arbre auxiliaire et coulissant dans un premier cylindre hydraulique, et un second piston (12), pressé contre la tige (5) de la soupape et coulissant dans un second cylindre hydraulique (16), ainsi qu'une canalisation (15) reliant le premier et le second cylindre hydraulique entre eux, caractérisé en ce qu'un palier à roulement (9 à 11) est fixé sur l'arbre auxiliaire (8), contre la bague extérieure (11) duquel est pressé le premier piston (12), cette bague étant fixée dans l'espace et étant seulement sollicitée dans le domaine élastique lors de la déformation qui lui est imprimée pendant la rotation de l'arbre auxiliaire.
2. Commande selon la revendication 1, caractérisée en ce que le premier piston (12) possède une plus grand section droite que le second piston (17).
EP86101217A 1985-02-11 1986-01-30 Entraînement de soupape avec transmission hydraulique Expired EP0191376B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86101217T ATE34803T1 (de) 1985-02-11 1986-01-30 Ventiltrieb mit hydraulischer uebersetzung.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3504639 1985-02-11
DE19853504639 DE3504639A1 (de) 1985-02-11 1985-02-11 Hydraulische steuerung fuer ventile von verbrennungskraftmaschinen
DE3534388 1985-09-26
DE3534388 1985-09-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP87107613.9 Division-Into 1987-05-25

Publications (2)

Publication Number Publication Date
EP0191376A1 EP0191376A1 (fr) 1986-08-20
EP0191376B1 true EP0191376B1 (fr) 1988-06-01

Family

ID=25829292

Family Applications (2)

Application Number Title Priority Date Filing Date
EP86101217A Expired EP0191376B1 (fr) 1985-02-11 1986-01-30 Entraînement de soupape avec transmission hydraulique
EP87107613A Expired - Lifetime EP0244878B1 (fr) 1985-02-11 1986-01-30 Commande électromagnétique-hydraulique de soupapes des moteurs à combustion interne

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP87107613A Expired - Lifetime EP0244878B1 (fr) 1985-02-11 1986-01-30 Commande électromagnétique-hydraulique de soupapes des moteurs à combustion interne

Country Status (4)

Country Link
EP (2) EP0191376B1 (fr)
JP (1) JPS61187505A (fr)
DE (2) DE3660265D1 (fr)
ES (1) ES8702577A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1621816A3 (ru) * 1987-02-10 1991-01-15 Интератом Гмбх (Фирма) Гидравлическое устройство управлени клапанами двигател внутреннего сгорани
DE8717456U1 (de) * 1987-08-26 1988-12-29 INTERATOM GmbH, 5060 Bergisch Gladbach Rotationskolbenpumpe mit ungleichmäßiger Pumpleistung, insbesondere zur Ventilsteuerung von Verbrennungskraftmaschinen
DE3836725C1 (fr) * 1988-10-28 1989-12-21 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE3920931A1 (de) * 1989-06-27 1991-01-03 Fev Motorentech Gmbh & Co Kg Elektromagnetisch arbeitende stelleinrichtung
DE4004876A1 (de) * 1990-02-16 1991-09-26 Ulrich Karrer Elektrisch betaetigte ventilsteuerung fuer periodisch betriebene ventile fuer kraftmaschinen
DE4020776A1 (de) * 1990-06-29 1992-01-09 Pi Patente Gmbh Vorrichtung zum antrieb eines werkzeuges fuer eine axiale hin- und herbewegung des werkzeuges
DE19723924B4 (de) * 1997-06-06 2008-02-28 Hoffmann, Bernhard Elektrischer Linearmotor
DE19829857A1 (de) * 1998-07-05 2000-01-13 Bayerische Motoren Werke Ag Brennkraftmaschine mit einem pneumatischen und/oder hydraulischen Aktuator für ein Gaswechsel-Hubventil
DK176152B1 (da) * 2000-07-10 2006-10-16 Man B & W Diesel As Fremgangsmåde til aktivering af en udstödsventil til en forbrændingsmotor samt en sådan udstödsventil
AT411090B (de) * 2000-12-12 2003-09-25 Jenbacher Ag Vollvariabler hydraulischer ventilantrieb
DE102004057574A1 (de) * 2004-11-30 2006-06-08 Luk Lamellen Und Kupplungsbau Beteiligungs Kg Variabler Ventiltrieb einer Brennkraftmaschine
DE102005017482B4 (de) 2005-04-15 2007-05-03 Compact Dynamics Gmbh Gaswechselventilaktor für einen ventilgesteuerten Verbrennungsmotor
DE102005017481B4 (de) 2005-04-15 2007-08-30 Compact Dynamics Gmbh Linearaktor
WO2013000155A1 (fr) * 2011-06-30 2013-01-03 Lio Pang-Chian Dispositif de télécommande à transmission hydraulique
CN105822377B (zh) * 2016-05-04 2018-05-18 哈尔滨工程大学 电磁控制增压式配气***
CN106958470A (zh) * 2017-05-23 2017-07-18 海南大学 电磁液压配气机构

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR471102A (fr) * 1913-10-02 1914-10-15 Ettore Bugatti Commande hydraulique de moteur avec piston de réglage formant compensateur
FR573596A (fr) * 1922-10-02 1924-06-26 Perfectionnements apportés à la commande de certains éléments, en mouvement périodique, de moteurs, notamment à celle d'éléments, tels que les soupapes, les organes d'injection et les dispositifs de graissage, dont le mouvement alterne avec des périodes de repos
DE467440C (de) * 1927-05-08 1928-10-25 Waggon Und Maschb Akt Ges Goer Druckfluessigkeitssteuerung fuer Ventile von Brennkraftmaschinen
FR932936A (fr) * 1946-07-31 1948-04-06 Perfectionnement aux commandes hydrauliques d'organes de moteurs et de machines diverses
FR941789A (fr) * 1947-01-16 1949-01-20 Dispositif de commande hydraulique de soupapes
US2635544A (en) * 1948-03-06 1953-04-21 Lossau Earl Hydraulic valve lifting mechanism
DE1002563B (de) * 1951-07-09 1957-02-14 Gerhard Schaller Hydraulischer Ventilantrieb fuer Brennkraftmaschinen
FR1380557A (fr) * 1963-10-02 1964-12-04 Glaenzer Spicer Sa Tourillon
DE2057639A1 (de) * 1969-12-05 1971-06-24 Inst Regelungstechnik Digitaler hydraulischer Stellantrieb
GB1591421A (en) * 1977-01-12 1981-06-24 Lucas Industries Ltd Valve operating mechanism
DE2907033A1 (de) * 1979-02-23 1980-09-04 Bosch Gmbh Robert Einrichtung zur betaetigung eines gaswechselventils bei brennkraftmaschinen
DE3024109A1 (de) * 1980-06-27 1982-01-21 Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen Elektromagnetisch arbeitende stelleinrichtung
DE3046891A1 (de) * 1980-12-12 1982-07-15 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnet
GB2122257B (en) * 1982-06-04 1986-04-16 Paul Julian Moloney Valve operating mechanism for internal combustion and like-valved engines
DE3311250C2 (de) 1983-03-28 1985-08-01 FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen Vorrichtung zur elektromagnetischen Betätigung eines Gaswechselventils für Verdrängungsmaschinen

Also Published As

Publication number Publication date
EP0244878A3 (en) 1987-12-23
EP0191376A1 (fr) 1986-08-20
EP0244878A2 (fr) 1987-11-11
JPS61187505A (ja) 1986-08-21
DE3660265D1 (en) 1988-07-07
EP0244878B1 (fr) 1990-10-31
ES551808A0 (es) 1986-12-16
DE3675387D1 (de) 1990-12-06
ES8702577A1 (es) 1986-12-16

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