EP0245614B1 - Vorrichtung zum Betätigen eines Gaswechsel-Tellerventils einer Hubkolben-Brennkraftmaschine - Google Patents

Vorrichtung zum Betätigen eines Gaswechsel-Tellerventils einer Hubkolben-Brennkraftmaschine Download PDF

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Publication number
EP0245614B1
EP0245614B1 EP87103881A EP87103881A EP0245614B1 EP 0245614 B1 EP0245614 B1 EP 0245614B1 EP 87103881 A EP87103881 A EP 87103881A EP 87103881 A EP87103881 A EP 87103881A EP 0245614 B1 EP0245614 B1 EP 0245614B1
Authority
EP
European Patent Office
Prior art keywords
valve
poppet valve
armature
bearing
damping
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 - Lifetime
Application number
EP87103881A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0245614A1 (de
Inventor
Hans Dipl.-Ing. Mezger
Hans-Joachim Dr. Dipl. Ing. Esch
Reinhard Könneker
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.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche 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 Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP0245614A1 publication Critical patent/EP0245614A1/de
Application granted granted Critical
Publication of EP0245614B1 publication Critical patent/EP0245614B1/de
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
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing 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
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/21—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • F01L2009/2109—The armature being articulated perpendicularly to the coils axes

Definitions

  • the invention relates to a device for actuating a gas exchange valve designed as a poppet valve of a reciprocating piston internal combustion engine according to the preamble of claim 1.
  • Such a valve actuation device is known from EP-PS 0 118 591.
  • Two electromagnets which are excited out of phase with each other, form an oscillation system with two coil springs, which rest on both sides of an armature disk attracted by the electromagnets.
  • the poppet valve connected to the armature disk is moved back and forth and thereby opens or closes a fluid passage opening.
  • a tight closing of the poppet valve should also be ensured if the end positions of the two stroke movements have tolerances caused by the production.
  • the characterizing features of claim 1 serve to solve this problem.
  • the torsion bar spring used for valve actuation does not have any oscillating masses which negatively influence the oscillating system. Even the rocker arm rigidly connected to the torsion bar spring, which is in operative connection with the poppet valve, has only a very small reduced mass, so that the armature articulated on the valve lever follows the alternating excitations of the electromagnets almost without inertia and can control the poppet valve accordingly.
  • a similar torsion bar spring is known from DE-AS 1 120 804 for a purely mechanical valve control actuated by a cam.
  • the use of a torsion bar spring for an electromagnetic valve control has the decisive advantage that it becomes functional in the first place by eliminating the translationally moved spring masses and correspondingly reducing the inertial forces and can be operated with a still reasonable amount of energy for the power supply of the electromagnets.
  • a resilient tolerance compensation is achieved in that the free end of the valve lever rests on a sliding sleeve which is longitudinally guided on the valve stem and is arranged at a short distance from a holding sleeve.
  • the torsion bar spring is rotatably connected at one end to the valve lever and is mounted in two bearing blocks arranged on both sides of the valve lever; at the other end, the torsion bar is clamped in a rotationally fixed manner in a holding bush screwed to the cylinder head.
  • the armature which is mounted longitudinally movably in the center of the two electromagnets, is articulated on the valve lever in such a way that its distance from the longitudinal axis of the poppet valve is considerably smaller than its distance from the longitudinal axis of the torsion bar or the center of the bearing of the valve lever. In this way, an adapted path translation can be achieved, from the valve stroke of the poppet valve, which is optimized from a thermodynamic point of view, to the stroke movement of the armature which is useful for commercially available electromagnets.
  • a hydraulic damping device is installed in the cylinder head above the valve stem.
  • damping discs are located in an oil-filled, cylindrical damping space.
  • a magnet housing 2 is fixed to the cylinder head 1 of a reciprocating piston internal combustion engine, in which a first electromagnet 3 and a second electromagnet 4 are fixedly attached at a distance a1 from one another.
  • an armature disk 6 which is fastened to an armature 5 and which is drawn towards the respectively excited electromagnet 3 or 4.
  • the armature is mounted at its free end in a bearing 7 of the magnet housing 2.
  • the other end of the armature 5 is screwed into a rod head 8 which is articulated with a pin 9 to a fork 10 of a one-armed valve lever 11; the just milled rod head 8 lies with lateral play between the fork 10.
  • the front end of the fork 10 engages between a thrust washer 13 resting on a shoulder of the valve stem 12 and a sliding sleeve 14 which is longitudinally movable on the valve stem 12 and is compensate by a helical spring 15 against a holding sleeve 16 fastened to the valve stem 12 is supported.
  • a small distance b is provided between the sliding sleeve 14 and the holding sleeve 16 in order to enable a resilient tolerance compensation between the armature stroke a2 and the valve stroke s of the poppet valve 17.
  • a damping sleeve 18 is fastened which, when the poppet valve 17 is closed, penetrates into the oil-filled damping cylinder 19 formed in the cylinder head, in which a plurality of damping disks 20 lie.
  • the end is designed as a bearing tube 25 with two radially projecting collars.
  • the bearing tube 25 is mounted on both sides in a bearing block 27 or 28 screwed to the cylinder head 1; the collars 26 lying on the end faces of the bearing blocks 27, 28 secure the bearing tube 25 against axial displacement.
  • one end of a cylindrical torsion bar spring 29 is fastened in the bearing tube 25 with a serration connection 30.
  • the other end of the torsion bar spring 29 is also non-rotatably connected with a serration connection 30 in a holding bush 31 which is provided with elongated holes 32 and is flanged to the cylinder head 1.
  • the distance c1 of the articulation point of the armature 5 on the valve lever to the longitudinal axis of the poppet valve 17 is smaller than the distance c2 to the center of the bearing of the valve lever 17 in order to be able to translate away from the armature stroke a2 to the valve stroke s.
  • the electromagnet 3 is energized.
  • the electromagnet 3 is de-energized and at the same time the electromagnet 4 is energized, but because of the large distance a2 it cannot exert any noticeable force on the armature disk.
  • the initial movement to open the poppet valve is effected by the tensioned torsion bar 29, which is only relaxed on half of the armature stroke. From here, the armature disk 6 is applied to the electromagnet 4 by the strongly progressively increasing magnetic force of the electromagnet 4 and the inertia force of the valve mechanism, the poppet valve 17 going into the open position and the torsion bar spring 29 being tensioned again, this time in the other direction of rotation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
EP87103881A 1986-05-16 1987-03-17 Vorrichtung zum Betätigen eines Gaswechsel-Tellerventils einer Hubkolben-Brennkraftmaschine Expired - Lifetime EP0245614B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3616540 1986-05-16
DE19863616540 DE3616540A1 (de) 1986-05-16 1986-05-16 Vorrichtung zum betaetigen eines gaswechsel-tellerventils einer hubkolben-brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0245614A1 EP0245614A1 (de) 1987-11-19
EP0245614B1 true EP0245614B1 (de) 1990-09-26

Family

ID=6300980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87103881A Expired - Lifetime EP0245614B1 (de) 1986-05-16 1987-03-17 Vorrichtung zum Betätigen eines Gaswechsel-Tellerventils einer Hubkolben-Brennkraftmaschine

Country Status (5)

Country Link
US (1) US4762095A (enrdf_load_stackoverflow)
EP (1) EP0245614B1 (enrdf_load_stackoverflow)
JP (1) JPS62271915A (enrdf_load_stackoverflow)
DE (2) DE3616540A1 (enrdf_load_stackoverflow)
ES (1) ES2018491B3 (enrdf_load_stackoverflow)

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US5161494A (en) * 1992-01-15 1992-11-10 Brown Jr John N Electromagnetic valve actuator
DE9412763U1 (de) * 1994-08-08 1995-12-07 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Motorbremsvorrichtung für einen Nutzfahrzeugmotor
DE69517335T2 (de) * 1994-11-09 2001-01-04 Aura Systems Inc., El Segundo Elektromagnetisch gelenktes ventil mit gelenkter armatur
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DE19707810C1 (de) * 1997-02-27 1998-05-07 Daimler Benz Ag Vorrichtung für eine elektromagnetische Ventilsteuerung
DE19717405A1 (de) * 1997-04-24 1998-10-29 Braunewell Markus Elektromagnetischer Antrieb E 13
DE19712056A1 (de) * 1997-03-24 1998-10-01 Braunewell Markus Elektromagnetischer Antrieb E8
DE59800892D1 (de) 1997-03-24 2001-07-26 Lsp Innovative Automotive Sys Elektromagnetischer antrieb
DE19712054A1 (de) * 1997-03-24 1998-10-01 Braunewell Markus Verbrennungsmotor E9
DE19741571A1 (de) * 1997-09-20 1999-03-25 Heinz Leiber Elektromagnetische Antriebseinheit
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DE19746832C1 (de) * 1997-10-23 1999-02-18 Isad Electronic Sys Gmbh & Co Elektromagnetische Stelleinrichtung
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JP3921311B2 (ja) * 1998-10-30 2007-05-30 株式会社日立製作所 機関弁の電磁駆動装置
WO2000029722A1 (de) * 1998-11-14 2000-05-25 Heinz Leiber Elektromagnetischer antrieb (stellantrieb für ein ventil eines verbrennungsmotors)
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IT1311131B1 (it) * 1999-11-05 2002-03-04 Magneti Marelli Spa Metodo per il controllo di attuatori elettromagnetici perl'azionamento di valvole di aspirazione e scarico in motori a
DE10120399A1 (de) 2001-04-25 2002-10-31 Daimler Chrysler Ag Drehstabfeder
DE10120401A1 (de) * 2001-04-25 2002-10-31 Daimler Chrysler Ag Vorrichtung zur Betätigung eines Gaswechselventils
US6681731B2 (en) * 2001-12-11 2004-01-27 Visteon Global Technologies, Inc. Variable valve mechanism for an engine
US20030217713A1 (en) * 2002-01-30 2003-11-27 Richardson Donald G. Variable valve opening for an internal combustion engine
DE10220788A1 (de) * 2002-05-10 2003-11-20 Daimler Chrysler Ag Elektromagnetischer Aktuator mit einem Schwenkanker
DE10224866A1 (de) * 2002-06-05 2003-12-24 Daimler Chrysler Ag Elektromagnetischer Aktuator
DE10231374A1 (de) * 2002-07-11 2004-01-22 Daimlerchrysler Ag Aktuator
DE20305920U1 (de) * 2003-04-11 2003-08-14 TRW Deutschland GmbH, 30890 Barsinghausen Vorrichtung zur nockenwellenlosen Betätigung eines Gaswechselventils
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Also Published As

Publication number Publication date
ES2018491B3 (es) 1991-04-16
JPS62271915A (ja) 1987-11-26
DE3616540C2 (enrdf_load_stackoverflow) 1989-11-30
DE3765167D1 (de) 1990-10-31
US4762095A (en) 1988-08-09
DE3616540A1 (de) 1987-11-19
EP0245614A1 (de) 1987-11-19

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