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EP1076162A2 - Commande électromagnétique de soupape pour un moteur à piston - Google Patents

Commande électromagnétique de soupape pour un moteur à piston Download PDF

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Publication number
EP1076162A2
EP1076162A2 EP00115285A EP00115285A EP1076162A2 EP 1076162 A2 EP1076162 A2 EP 1076162A2 EP 00115285 A EP00115285 A EP 00115285A EP 00115285 A EP00115285 A EP 00115285A EP 1076162 A2 EP1076162 A2 EP 1076162A2
Authority
EP
European Patent Office
Prior art keywords
valve
plate
anchor plate
electromagnetically actuated
train according
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.)
Withdrawn
Application number
EP00115285A
Other languages
German (de)
English (en)
Other versions
EP1076162A3 (fr
Inventor
Anton Bock
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
Publication of EP1076162A2 publication Critical patent/EP1076162A2/fr
Publication of EP1076162A3 publication Critical patent/EP1076162A3/fr
Withdrawn legal-status Critical Current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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/10—Connecting springs to valve members
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution

Definitions

  • the invention relates to an electromagnetically actuated valve train for a Lift valve of a reciprocating piston internal combustion engine, the valve stem of the Lift valve an oscillating between two electromagnetic coils Anchor plate carries two oscillating springs on the opposite side attack.
  • the technical environment is next to the DE 196 24 296 A1 referred to DE 196 10 468 A1.
  • An electromagnetic lift valve actuator has immense advantages since the so-called valve timing, i.e. the opening time and the Closing time of the globe valves, as well as the valve lift and valve lift curve are freely adjustable. However, such an electromagnetic Lift valve actuator any way to Compensation for the valve clearance may be provided. With the first mentioned above scripture for this is a known (hydraulic) valve lash compensation element intended.
  • DE 196 24 296 A1 shows such an independent guided valve actuation plunger, while in the input second-mentioned DE 196 10 468 A1 at least in the form of a schematic diagram a construction is shown without a valve tappet, i.e. in which the valve stem of the lift valve itself carries the anchor plate.
  • an internal combustion engine lift valve 1 which is known in the art Way is arranged in the engine cylinder head 2, one in it Set of 3 designated electromagnetic actuator intended.
  • This consists of a so-called actuator housing 4, inside whose two electromagnetic coils 5a, 5b are arranged, between which an anchor plate 6 is guided longitudinally displaceably in the valve axis direction 7.
  • This Armature plate 6 is by the correspondingly excited electromagnetic coils 5a, 5b moves and transmits their movement directly to the valve stem 1 ' of the lift valve 1.
  • This electromagnetic valve train is known designed as a vibration system, i.e. on the anchor plate 6 engage each other two so-called oscillating springs 8a, 8b, which act as helical compression springs are trained to.
  • valve stem 1 ' is considerably longer than with conventional globe valves trained and extends almost over the entire height of the electromagnetic actuator 3 into this. So can the valve stem 1 ', which, as usual, is inserted in a cylinder head 2 Valve guide 9 is longitudinally displaceable (i.e. in valve axis direction 7), even carry the anchor plate 6.
  • the anchor plate 6 is not rigid connected to the valve stem 1 ', but the armature plate 6 is supported with an opening movement of the lift valve 1 directly and with a closing movement of the lift valve 1 with the interposition of a valve lash adjuster ensuring spring element 10 on the valve stem 1 ', as will be explained in more detail below.
  • the valve stem 1 ' is provided with a support sleeve 12, the spring element 10 ensuring valve clearance compensation being clamped between this support sleeve 12 and the anchor plate 6.
  • the support sleeve 12 which is virtually pushed onto the valve stem 1 ', is designed in several parts, a sleeve part 12a penetrating the anchor plate 6 being provided at the end with a collar 12a' which can rest on the side of the anchor plate 6 facing the valve plate 1 '' of the globe valve 1 .
  • a support plate 12b which interacts with the said spring element 10. The latter is fastened with a screw nut 13 to the valve stem 1 ', which is threaded in this area.
  • the collar 12a 'of the support sleeve 12, viewed in the valve axis direction 7, can be slightly spaced from the armature plate 6, which means that when the armature plate 6 is in the closed position, ie, it rests against the upper electromagnetic coil 5a
  • the lifting valve 1 is securely closed or can be closed, ie the lifting valve 1 then lies securely with its valve disk 1 ′′ on the valve seat 2a integrated in the cylinder head 2. If an opening movement of the lift valve 1 is now to be initiated, the upper electromagnetic coil 5a is de-energized and the lower electromagnetic coil 5b is excited, whereby the armature plate 6 is moved downward in the direction of the arrow 11.
  • the anchor plate 6 first hits the collar 12a 'of the support sleeve 12, whereby this comes to rest on the underside of the anchor plate 6 facing the valve plate 1'', so that the valve 1 is carried along in the further movement of the anchor plate 6 in the direction of the arrow 11 and this opens. During this opening movement in the direction of arrow 11, the anchor plate 6 is thus supported directly on the lift valve 1.
  • the armature plate 6 is moved upward in the opposite direction of the arrow 11 by subsequent de-excitation of the lower electromagnetic coil 5b and excitation of the upper electromagnetic coil 5a. Via the spring element 10 and the support plate 12b of the support sleeve 12 (and the nut 13), this movement is transmitted to the valve stem 1 'and thus to the lift valve 1.
  • the armature plate 6 is supported on the valve stem 1 'via the spring element 10.
  • the lifting valve 1 with its valve plate 1 ′′ can strike the valve seat 2a before the armature plate 6 comes to rest on the upper electromagnetic coil 5b, ie after the lifting valve valve plate 1 ′′ has hit the valve seat 2a the anchor plate 6 can still be moved slightly against the direction of the arrow 11. With this design, the valve clearance compensation known to the person skilled in the art is thus ensured.
  • a shim 17 between the actuator housing 4 and the engine cylinder head 2 is provided.
  • This shim 17 can in different in the valve axis direction 7 measured heights are available, e.g. graded in 0.1 mm increments.
  • the with the reference number 18 provided mounting aid, with the help of which Lift valve 1 during the assembly of the actuator 3 in its is held in the closed position.
  • the actuator housing 4 itself is essentially in two parts, i.e. in the plane the anchor plate 6 is divided. There are adapter sleeves in this separation point 19 is provided, specifically in the area of the actuating device 3 on the cylinder head 2 attaching tie rod 20, which the actuator housing 4 in the edge area in the valve axis direction 7 (each in a bore) penetrate. These tie rods 20 are also in the transition area between the actuator housing 4 and the cylinder head 2 such Pass bushings 19 provided.
  • valve shaft 1 Between the cylinder head 2 and the electromagnetic actuator 3 also shows a valve shaft 1 'enveloping, in Form of a bellows formed valve stem seal 21, the one Tightness to the cylinder head 2 or to the gas exchange channel provided in this 22 out, which opens from the lift valve 2 downwards or is closed.
  • a bellows result lower friction losses than with conventional valve stem seals, where the valve stem always slides along a fixed sealing lip.
  • the stroke movement of the valve is now more energy efficient taken up by the bellows.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
EP00115285A 1999-08-13 2000-07-14 Commande électromagnétique de soupape pour un moteur à piston Withdrawn EP1076162A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19938451A DE19938451A1 (de) 1999-08-13 1999-08-13 Elektromagnetisch betätigter Ventiltrieb für ein Hubventil einer Hubkolben-Brennkraftmaschine
DE19938451 1999-08-13

Publications (2)

Publication Number Publication Date
EP1076162A2 true EP1076162A2 (fr) 2001-02-14
EP1076162A3 EP1076162A3 (fr) 2001-11-14

Family

ID=7918321

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00115285A Withdrawn EP1076162A3 (fr) 1999-08-13 2000-07-14 Commande électromagnétique de soupape pour un moteur à piston

Country Status (2)

Country Link
EP (1) EP1076162A3 (fr)
DE (1) DE19938451A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867226A1 (fr) * 2004-03-05 2005-09-09 Simcoo Nouveau moyen d'etancheite pour queues de soupapes de moteurs thermiques de faible puissance et ses utilisations
FR2867225A1 (fr) * 2004-03-05 2005-09-09 Simcoo Nouveau moyen d'etancheite pour moteurs thermiques de faible puissance et ses utilisations

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19610468A1 (de) 1995-08-08 1997-02-13 Fev Motorentech Gmbh & Co Kg Verfahren zur lastabhängigen Steuerung der Gaswechselventile an einer Kolbenbrennkraftmaschine
DE19624296A1 (de) 1996-06-18 1998-01-02 Bayerische Motoren Werke Ag Elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19531437A1 (de) * 1995-08-26 1997-02-27 Fev Motorentech Gmbh & Co Kg Verfahren zur Erfassung des Ventilspiels an einem durch einen elektromagnetischen Aktuator betätigten Gaswechselventil
DE19607019A1 (de) * 1996-02-24 1997-08-28 Daimler Benz Ag Vorrichtung zur elektromagnetischen Betätigung eines Gaswechselventiles für Verbrennungsmotoren
US5645019A (en) * 1996-11-12 1997-07-08 Ford Global Technologies, Inc. Electromechanically actuated valve with soft landing and consistent seating force
DE19723782C2 (de) * 1997-06-06 2001-02-01 Daimler Chrysler Ag Elektromagnetischer Aktuator zur Betätigung eines Gaswechselventils
DE19745522C2 (de) * 1997-10-15 2001-03-22 Daimler Chrysler Ag Vorrichtung zur Betätigung eines Gaswechselventiles einer Hubkolbenbrennkraftmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19610468A1 (de) 1995-08-08 1997-02-13 Fev Motorentech Gmbh & Co Kg Verfahren zur lastabhängigen Steuerung der Gaswechselventile an einer Kolbenbrennkraftmaschine
DE19624296A1 (de) 1996-06-18 1998-01-02 Bayerische Motoren Werke Ag Elektromagnetische Betätigungsvorrichtung für Brennkraftmaschinen-Hubventile

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2867226A1 (fr) * 2004-03-05 2005-09-09 Simcoo Nouveau moyen d'etancheite pour queues de soupapes de moteurs thermiques de faible puissance et ses utilisations
FR2867225A1 (fr) * 2004-03-05 2005-09-09 Simcoo Nouveau moyen d'etancheite pour moteurs thermiques de faible puissance et ses utilisations

Also Published As

Publication number Publication date
DE19938451A1 (de) 2001-02-15
EP1076162A3 (fr) 2001-11-14

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