EP0191376A1 - Entraînement de soupape avec transmission hydraulique - Google Patents

Entraînement de soupape avec transmission hydraulique Download PDF

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Publication number
EP0191376A1
EP0191376A1 EP86101217A EP86101217A EP0191376A1 EP 0191376 A1 EP0191376 A1 EP 0191376A1 EP 86101217 A EP86101217 A EP 86101217A EP 86101217 A EP86101217 A EP 86101217A EP 0191376 A1 EP0191376 A1 EP 0191376A1
Authority
EP
European Patent Office
Prior art keywords
piston
valve
cylinder
electromagnet
valve train
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
EP86101217A
Other languages
German (de)
English (en)
Other versions
EP0191376B1 (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 a valve train for internal combustion engines, ie for 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 and thereby brought into their open position in that a force which counteracts and exceeds the spring force is applied to the valve stem; this 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 tappets via rocker arms.
  • Hydraulic valve drives are known, for example from DE-C-467 440. 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.
  • Electromagnetic valve drives are also already known, namely from DE-A-33 .11 250 and 30 24 109.
  • an attempt is made to close the valve, which is designed as an armature of an electromagnet, via the selected displacement path (for example in a motor vehicle engine of 100 KW can be a few mm) by exciting the former.
  • This requires relatively large electromagnets, which are not only complex, but also often difficult to accommodate in the immediate vicinity of the engine block.
  • the object of the present invention is to allow a larger valve lift while at the same time adhering to the conventional construction of the aforementioned motors 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.
  • This return spring can be dispensed with in an embodiment of the invention according to the fifth claim, or its strength can be reduced to the extent that is sufficient to compensate for mechanical play.
  • the differential piston arrangement has the effect that a displacement of one piston, no matter in which direction, always results in a corresponding displacement of the other piston.
  • a pot magnet appears to be particularly suitable for use in the construction described.
  • the second piston and the valve stem with the integrally formed valve plate can be made in one piece, which also further reduces the possibility of play in the transmission.
  • FIG. 1 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 exhaust 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.
  • An auxiliary shaft 8 is driven by a crankshaft of the machine (not shown here) with a reduction ratio of 2: 1 (exaggerated here for clarification) ) non-circular cross-section on which a rolling 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 in terms of dimensions and material able to provide them with a certain amount of forced deformation. To be followed straight without these components being stressed beyond their elastic limit. This is the case here since the outer race 11 is fixed in space so that it.
  • Rotational movements of the auxiliary shaft 8 and the inner race 9 fastened thereon cannot follow in the circumferential direction, however performs an oscillating radial movement, depending on the angular position of the auxiliary shaft 8.
  • Its shape is not necessarily a double oval, as shown here, but will have to be selected by a person skilled in the art depending on the desired valve timing, whereby a form that is similar to that of the Cam used conventionally for valve controls is not dissimilar.
  • 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 length and shape, in which a second piston 17 slides, which in turn acts on the valve stem 5. 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 of the second cylinder 16, the relatively small reciprocating movement h of the first piston 12 results in a correspondingly larger movement H of the second piston 17 um. 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 12 distributed over its circumference, the same number of valves 4, not shown here, via the similar hydraulic transmissions described, in the example shown the four intake valves one Control four-cylinder engine.
  • the first piston 12 is made in one piece with an armature 19.
  • the armature 19 is in contact with a first electromagnet 20 or a second electromagnet 21, depending on the alternating excitation to be carried out.
  • the air gap s to the electromagnet removed in each case is only about 1 to 1.5 mm in size, so that relatively weak and thus small electromagnets can be used. This is particularly the case when, as shown here, it is not necessary to work against a strong return spring, but rather a spring 6 which presses the valve plate 4 into its closed position only serves to compensate for play and can be dimensioned correspondingly weak.
  • the excitation of the electromagnets 20, 21 takes place alternately by a control unit 26, in which not only the respective, for. B.
  • the first cylinder 13 is connected to the second cylinder 16 via two lines 15, 18 in such a way that each line opens on one side of the first and second piston 12 and 17, respectively. Without a return spring, the latter then follows every movement of the former.

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)
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 1986-01-30

Publications (2)

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

Family

ID=25829292

Family Applications (2)

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
EP86101217A Expired EP0191376B1 (fr) 1985-02-11 1986-01-30 Entraînement de soupape avec transmission hydraulique

Family Applications Before (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) EP0244878B1 (fr)
JP (1) JPS61187505A (fr)
DE (2) DE3660265D1 (fr)
ES (1) ES8702577A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0306735A1 (fr) * 1987-08-26 1989-03-15 INTERATOM Gesellschaft mit beschränkter Haftung Commande de soupape pour moteur à combustion interne par pompe à piston rotatif et à débit intermittent
US4821689A (en) * 1987-02-10 1989-04-18 Interatom Gmbh Valve drive with a hydraulic transmission and a characteristic variable by means of a link control
CN1329635C (zh) * 2000-07-10 2007-08-01 曼B与W狄赛尔公司 一种用于驱动内燃机的排气阀的方法及其排气阀
CN105822377A (zh) * 2016-05-04 2016-08-03 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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Citations (14)

* 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
GB1079759A (en) * 1963-10-02 1967-08-16 Glaenzer Spicer Sa Improvements in or relating to bearings
DE2057639A1 (de) * 1969-12-05 1971-06-24 Inst Regelungstechnik Digitaler hydraulischer Stellantrieb
FR2377525A1 (fr) * 1977-01-12 1978-08-11 Lucas Industries Ltd Mecanisme de commande d'une soupape champignon de moteur
EP0054107A1 (fr) * 1980-12-12 1982-06-23 Robert Bosch Gmbh Electro-aimant
GB2122257A (en) * 1982-06-04 1984-01-11 Paul Julian Moloney Valve operating mechanism for internal combustion and like-valved engines
EP0043426B1 (fr) * 1980-06-27 1984-07-11 Pischinger, Franz, Prof. Dr. techn. Dispositif de réglage à commande électromagnétique
GB2137420A (en) * 1983-03-28 1984-10-03 Fev Forsch Energietech Verbr Electromagnetically-operated adjusting means

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2907033A1 (de) * 1979-02-23 1980-09-04 Bosch Gmbh Robert Einrichtung zur betaetigung eines gaswechselventils bei brennkraftmaschinen

Patent Citations (14)

* 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
GB1079759A (en) * 1963-10-02 1967-08-16 Glaenzer Spicer Sa Improvements in or relating to bearings
DE2057639A1 (de) * 1969-12-05 1971-06-24 Inst Regelungstechnik Digitaler hydraulischer Stellantrieb
FR2377525A1 (fr) * 1977-01-12 1978-08-11 Lucas Industries Ltd Mecanisme de commande d'une soupape champignon de moteur
EP0043426B1 (fr) * 1980-06-27 1984-07-11 Pischinger, Franz, Prof. Dr. techn. Dispositif de réglage à commande électromagnétique
EP0054107A1 (fr) * 1980-12-12 1982-06-23 Robert Bosch Gmbh Electro-aimant
GB2122257A (en) * 1982-06-04 1984-01-11 Paul Julian Moloney Valve operating mechanism for internal combustion and like-valved engines
GB2137420A (en) * 1983-03-28 1984-10-03 Fev Forsch Energietech Verbr Electromagnetically-operated adjusting means

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4821689A (en) * 1987-02-10 1989-04-18 Interatom Gmbh Valve drive with a hydraulic transmission and a characteristic variable by means of a link control
EP0306735A1 (fr) * 1987-08-26 1989-03-15 INTERATOM Gesellschaft mit beschränkter Haftung Commande de soupape pour moteur à combustion interne par pompe à piston rotatif et à débit intermittent
US4896633A (en) * 1987-08-26 1990-01-30 Interatom Gmbh Valve control of internal combustion engines by means of a rotary piston pump with unequal pumping output
CN1329635C (zh) * 2000-07-10 2007-08-01 曼B与W狄赛尔公司 一种用于驱动内燃机的排气阀的方法及其排气阀
CN105822377A (zh) * 2016-05-04 2016-08-03 哈尔滨工程大学 电磁控制增压式配气***
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

Also Published As

Publication number Publication date
EP0244878A2 (fr) 1987-11-11
EP0244878B1 (fr) 1990-10-31
ES551808A0 (es) 1986-12-16
EP0244878A3 (en) 1987-12-23
JPS61187505A (ja) 1986-08-21
EP0191376B1 (fr) 1988-06-01
DE3660265D1 (en) 1988-07-07
ES8702577A1 (es) 1986-12-16
DE3675387D1 (de) 1990-12-06

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