EP1241324B1 - Verfahren beim Abstellen einer Brennkraftmaschine mit elektromagnetisch betätigten Gaswechselventilen - Google Patents
Verfahren beim Abstellen einer Brennkraftmaschine mit elektromagnetisch betätigten Gaswechselventilen Download PDFInfo
- Publication number
- EP1241324B1 EP1241324B1 EP02002500A EP02002500A EP1241324B1 EP 1241324 B1 EP1241324 B1 EP 1241324B1 EP 02002500 A EP02002500 A EP 02002500A EP 02002500 A EP02002500 A EP 02002500A EP 1241324 B1 EP1241324 B1 EP 1241324B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- armature
- gas exchange
- exchange valve
- valve
- internal combustion
- 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
Links
Images
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
- 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
- F01L2009/2132—Biasing means
- F01L2009/2134—Helical springs
- F01L2009/2136—Two opposed springs for intermediate resting position of the armature
-
- 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
- F01L9/40—Methods of operation thereof; Control of valve actuation, e.g. duration or lift
- F01L2009/4086—Soft landing, e.g. applying braking current; Levitation of armature close to core surface
-
- 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
- F01L9/40—Methods of operation thereof; Control of valve actuation, e.g. duration or lift
- F01L2009/4098—Methods of operation thereof; Control of valve actuation, e.g. duration or lift relating to gap between armature shaft and valve stem end
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/03—Stopping; Stalling
Definitions
- the invention relates to a method for switching off an internal combustion engine electromagnetically operated gas exchange valves.
- the anchor has an anchor plunger that is at least partially is in direct contact with a valve tappet and therefore also the valve moved back and forth between an open and a closed position.
- Embodiments are known in which between the anchor plunger and there is a rigid connection to the valve lifter.
- the present invention is directed however, relate to embodiments in which there is no rigid connection between Armature and valve lifters are present.
- valve and Anchor tappet there is between valve and Anchor tappet a so-called valve lash adjuster, with which the distance of the two aforementioned parts can be adjusted to each other.
- valve plate is moved from the armature into an open position of the armature in its open position spent.
- the anchor tappet must always be on the valve tappet seated.
- the valve disc In the other end position, however, in which the anchor on one So-called normally open electromagnet is present, the valve disc is in its closed position on the cylinder head, and is in this state with the invention Embodiments a distance between the valve lifter and the armature lifter. It can now be released by controlling the electromagnets accordingly the anchor from its end position corresponding to the closed position of the normally closed electromagnet, it moves to the other end position on its way to a position at which the anchor tappet for resting on the valve tappet arrives.
- the object of the present invention is the known method mentioned at the outset to develop in such a way that even when the engine is switched off, if possible wear and noise-free operation can be guaranteed.
- the deactivation can preferably take place in a controlled manner, i. H. it can be a regulated one Braking the armature in the direction of its rest position can be brought about. This can be achieved, for example, by further energizing the opening electromagnets. With such a controlled or regulated decay process be avoided that the electromagnetically operated valve again in a Position in which there is a distance between the armature and the valve tappet, which in turn can lead to the disadvantages mentioned above.
- the electromagnetically operated gas exchange valve shown in Figures 1 and 2 is built up essentially in a known manner.
- an actuator 10 provided with two spaced poles 12 and 14, in the grooves of each an electromagnetic coil is embedded.
- an armature 16 is arranged, which by alternating energization of the two Coils can be moved back and forth.
- the anchor has an anchor shaft 34, which - in the present figures - protrudes downwards.
- the actuator 10 is seated on a cylinder head 22, of which however only a section is shown.
- the cylinder head 22 has a recess, at the end opposite the actuator 10, a valve with a valve lifter 28 is mounted to slide back and forth.
- a valve plate 30 is arranged, against which one is shown only schematically Spring 20 is supported.
- the other end of the spring 20 is supported against one another spring seat 24, which is arranged on the cylinder head 22.
- the spring 20 biases the valve 26 to its closed position.
- a spring plate 32 is also arranged at the lower end of the armature tappet 34, against which a second valve spring 18 is supported.
- the valve spring 18 is supported their other end against the housing of the actuator 10 and acts on the Anchor in its open position.
- the armature 16 is shown by the alternating loading of the Coils moved back and forth, whereby the gas exchange valve 26 between its open and closed position is moved back and forth.
- 1 shows the closed position of the valve and the upper end position of the armature 16
- 2 shows the open position of the valve 26 and the other end position of the armature 16.
- the valve plate of valve 26 is on the cylinder head and the anchor 16 comes to rest on the upper yoke 12.
- valve tappet 28 There is between the valve tappet 28 and the armature tappet 34 a distance 36 upper coil deactivated and the lower coil activated, so the anchor - too using the energy stored in the spring 18 - in its other end position moves, whereby the armature plunger 34 after the distance 36 hits the valve lifter and urges the valve into its open position.
- measures are provided so that the Anchor plunger 34 as possible after detaching the anchor 16 from the upper yoke 12 strikes the plunger 28 gently.
- the upper coil briefly energized again, resulting in a braking pulse and thus a slower one Detachment and "flying away" of the anchor leads, reducing the speed of the armature when the armature tappet 34 is placed on the valve tappet 28 is low can be held.
- the lower electromagnet is activated so that the valve 26 in its in Fig. 2 shown open position can be spent.
- the problem is solved that even after the parking the internal combustion engine as little noise and wear as possible of the armature tappet can be reached on the valve tappet 28.
- To this Purpose is in an internal combustion engine with several electromagnetically actuated Gas exchange valves checked which anchor is essentially in its open position. With this anchor, the measure then becomes gentle Placing the anchor tappet 34 on the valve tappet 28 is still carried out and in addition the anchor operated for this period. Only then will the actuator 10 deactivated.
- a controlled one The armature is brought to a halt by the opening magnet 12 as well after placing the anchor tappet 34 on the valve tappet 28 still slightly is energized. As a result, a restrained moment comes to anchor 16 to the effect, so that this slower and without further reverberation in moves its rest position.
- the present invention thus also when the internal combustion engine is switched off ensures a low-noise and low-wear mode of operation.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Description
- Fig. 1
- eine schematische Teilschnittansicht durch ein elektromagnetisch betätigtes Gaswechselventil in seiner Geschlossenstellung und
- Fig. 2
- eine schematische Darstellung wie in Fig. 1, wobei das Gaswechselventil sich jedoch in seiner Offenstellung befindet.
Claims (6)
- Verfahren beim Abstellen einer Brennkraftmaschine mit elektromagnetisch betätigten Gaswechselventilen, bei denen ein Anker durch alternierende Bestromung zweier Elektromagnete zwischen zwei Endstellungen hin- und herbewegt wird und ein Gaswechselventil beaufschlagt, so dass dieses zwischen einer Offen- und einer Geschlossenstellung hin- und herbewegt wird, und wobei in der Geschlossenstellung des Gaswechselventils der Anker nicht unmittelbar an dem Gaswechsetventil selbst anliegt,
mit den Schritten,
dass beim normalen Betrieb der Gaswechselventile durch entsprechende Steuerung der Spulenströme eine Maßnahme zum sanften Aufsetzen des von der Geschlossenstellung des Gaswechselventils kommenden Ankers auf das Gaswechselventil durchgeführt wird,
dadurch gekennzeichnet, dass beim Abstellen der Brennkraftmaschine vor dem Außerbetriebsetzen der einzelnen Gaswechselventile geprüft wird, ob sich ein Anker im wesentlichen in seiner geöffneten Position befindet, und bei positivem Ergebnis der Prüfung die Maßnahme zum sanften Aufsetzen des Ankers auf das Gaswechselventil solange durchgeführt und ein Außerbetriebsetzen solange ausgesetzt wird, bis ein negatives Prüfungsergebnis vorliegt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass es sich bei der Maßnahme zum sanften Aufsetzen des Ankers auf das Gaswechselventil um einen Bremsvorgang beim Ablösen des Ankers von einem Offenstellungs-Elektromagneten handelt. - Verfahren nach Anspruch 2,
dadurch gekennzeichnet, dass der Abbremsvorgang durch Bestromen der Spule des Offenstellungs-Elektromagneten herbeigeführt wird. - Verfahren nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass ein gesteuertes oder geregeltes Anhalten des Ankers durchgeführt wird. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet, dass die Anker gesteuert oder geregelt in die Ruheposition verbracht werden. - Verfahren nach Anspruch 4 oder 5,
dadurch gekennzeichnet, dass das gesteuerte oder geregelte Anhalten des Ankers durch Bestromung der Elektromagnete bewirkt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10112999 | 2001-03-17 | ||
DE10112999A DE10112999A1 (de) | 2001-03-17 | 2001-03-17 | Verfahren beim Abstellen einer Brennkraftmaschine mit elektromagnetisch betätigten Gaswechselventilen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1241324A1 EP1241324A1 (de) | 2002-09-18 |
EP1241324B1 true EP1241324B1 (de) | 2003-08-20 |
Family
ID=7677899
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02002500A Expired - Lifetime EP1241324B1 (de) | 2001-03-17 | 2002-02-02 | Verfahren beim Abstellen einer Brennkraftmaschine mit elektromagnetisch betätigten Gaswechselventilen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1241324B1 (de) |
DE (2) | DE10112999A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2829177B1 (fr) * | 2001-08-30 | 2005-12-02 | Peugeot Citroen Automobiles Sa | Dispositif de commande de soupape pour moteur a combustion interne |
SE542805C2 (sv) | 2018-07-31 | 2020-07-14 | Hedman Ericsson Patent Ab | Elektriskt aktiverad ventilaktuator för en internförbränningsmotor |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19529155B4 (de) * | 1995-08-08 | 2007-05-24 | Fev Motorentechnik Gmbh | Verfahren zur Messung des Ventilspiels an einem durch einen elektromagnetischen Aktuator betätigten Gaswechselventil |
DE19710974A1 (de) * | 1997-03-17 | 1998-09-24 | Bayerische Motoren Werke Ag | Verfahren zur Schließhalterung eines mit einem elektromagnetischen Aktuators betätigten Gaswechselorgans einer Brennkraftmaschine |
DE19905492C1 (de) * | 1999-02-10 | 2000-05-04 | Daimler Chrysler Ag | Verfahren zur elektromagnetischen Steuerung der Gaswechselventile von Brennkraftmaschinen |
EP1041252B1 (de) * | 1999-03-31 | 2005-06-01 | FEV Motorentechnik GmbH | Gaswechselventilanordnung mit elektromagnetischem Aktuator |
DE10081384D2 (de) * | 1999-05-19 | 2001-08-09 | Fev Motorentech Gmbh | Verfahren zur Ansteuerung eines elektromagnetischen Ventiltriebs für ein Gaswechselventil an einer Kolbenbrennkraftmaschine |
DE10005247C1 (de) * | 2000-02-05 | 2001-02-15 | Daimler Chrysler Ag | Vorrichtung zum Betätigen eines Gaswechselventils einer Brennkraftmaschine |
-
2001
- 2001-03-17 DE DE10112999A patent/DE10112999A1/de not_active Withdrawn
-
2002
- 2002-02-02 DE DE50200028T patent/DE50200028D1/de not_active Expired - Lifetime
- 2002-02-02 EP EP02002500A patent/EP1241324B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE10112999A1 (de) | 2002-09-19 |
EP1241324A1 (de) | 2002-09-18 |
DE50200028D1 (de) | 2003-09-25 |
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