EP0283671B1 - Internal combustion engine inlet valve control process - Google Patents
Internal combustion engine inlet valve control process Download PDFInfo
- Publication number
- EP0283671B1 EP0283671B1 EP88101222A EP88101222A EP0283671B1 EP 0283671 B1 EP0283671 B1 EP 0283671B1 EP 88101222 A EP88101222 A EP 88101222A EP 88101222 A EP88101222 A EP 88101222A EP 0283671 B1 EP0283671 B1 EP 0283671B1
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- EP
- European Patent Office
- Prior art keywords
- inlet valve
- setting
- open setting
- valve
- electromagnet
- 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
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Classifications
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- 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
Definitions
- the invention relates to a method for operating an intake valve of an internal combustion engine according to the preamble of claim 1.
- the gas exchange valve is held in its open and in its closed position and leaves its closed position only by a corresponding control impulse on the electromagnet.
- the object of the invention is to show a way to allow only small amounts of the fuel-air mixture to occur in internal combustion engines of the type mentioned in areas with low load requirements.
- claim 1 The object is achieved by claim 1 or claim 2
- the gas exchange valve is opened from its closed position for short-term opening by a corresponding wiring of the magnets and is acted upon by the spring action in the direction of the open position.
- the gas exchange valve is not caught, as in the prior art, in order to then be moved back into the closed position in a defined manner, but the catching mechanism of the open position is not activated.
- the electromagnet assigned to the open position is activated so that the gas exchange valve is repelled again. This process can even be supported by a corresponding wiring of the electromagnet.
- the electromagnet assigned to the open position is not energized, so that the armature, which moves into the area of attraction of the electromagnet, which is assigned to the open position, is not attracted there, but by the spring action in the reverse direction is immediately brought back in the direction of the magnet associated with the closed position.
- This now re-energized closing magnet then ensures that the gas exchange valve remains in its closed position.
- a particularly favorable point in time for the corresponding actuation of the gas exchange valve is the point in time shortly after bottom dead center, that is to say when a maximum negative pressure has set in the interior of the cylinder and the piston is already moving upwards again. Under these conditions, an optimal swirling of the mixture within the cylinder is achieved, which has a favorable effect on the subsequent combustion process. The fuel requirement of an engine can be greatly reduced in this way.
- the figure shows schematically an arrangement for controlling a gas exchange valve.
- (10) shows the interior of a cylinder, to which a gasoline-air mixture can be supplied via an intake duct (12).
- a valve disk (14) of an inlet valve opens the opening of the inlet channel (12) when it is lifted out of its seat, so that the mixture can enter the cylinder (10).
- the valve plate (14) of the inlet valve is moved via a valve stem (16) which is connected to an anchor plate (18).
- the anchor plate (18) is in the closed position of the valve on the poles of an electromagnet (20), in the open position of the valve on the poles of an electromagnet ten (22).
- the electromagnets (20) and (22) are arranged in a housing (24).
- a bore (26) is provided which surrounds part of the valve stem (16) and in which springs (28) and (30) are provided.
- the springs (28) are supported on one edge of the bore (26) and act on the anchor plate (18) in the closed position of the valve in the direction of the movement to the open position, the springs (30) are also on the other side of the anchor plate on the edge the bore and act on the anchor plate (18) of the valve in the open position in the direction of the movement to the closed position.
- the electromagnets (20) are energized, while the springs (28) act on the armature plate in the direction away from the electromagnets (20), that is, counter to the attractive force of the electromagnets.
- the force exerted by the springs (28) is less than the holding force of the electromagnet (20).
- the electromagnet (20) is switched off, the armature (18) is pushed away by the springs (28), the valve moves into its open position. If the electromagnets (22) are now energized, the armature (18) is attracted to the electromagnets (22) when they approach it, the spring (30) is then tensioned and the spring (28) is relaxed.
- the electromagnet (22) is not actuated during this movement from the closed position into the open position, so that after the springs (28) have been relaxed and the springs (30) have been compressed, the springs (30) immediately reverse the direction of movement and press the armature (18) back near the electromagnets (20) so that the system has performed a single vibration.
- the electromagnet (20) has meanwhile been energized again, so that with this approach of the armature plate (18) to the electromagnet (20), the armature (18) is attracted again by the electromagnet (20) and the valve closes again.
- the valve disc (14) has thus only very briefly lifted off its seat and immediately moved back into its closed position, so that a fuel-air mixture could only enter the interior of the cylinder (10) for a very short period of time.
- the time of the greatest pressure difference between the ambient pressure in the intake manifold and the cylinder interior (10) can be exploited, namely the time at or immediately after reaching bottom dead center.
- An entry of the fuel-air mixture at this time ensures an optimal swirl in the combustion chamber, so that the energy content of the fuel-air mixture is optimally used and at the same time the exhaust gas behavior is positively influenced.
Description
Die Erfindung betrifft ein Verfahren zum Betreiben eines Einlaßventiles einer Brennkraftmaschine gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for operating an intake valve of an internal combustion engine according to the preamble of claim 1.
Brennkraftmaschinen mit Gaswechselventilen, die durch die Erregung oder Entregung eines Elektromagneten gesteuert werden, sind Stand der Technik. Beispiele dafür finden sich in der DE-OS 30 24 109 oder DE-OS 35 00 530. Durch das Ein-oder Ausschalten eines Elektromagneten kann sich ein Anker, der bewegungsmäßig mit dem Gaswechselventil gekoppelt ist, von dem Elektromagneten lösen und wird durch Federkraft weggedrückt. In der Mittelstellung wird er beidseitig von Federn beaufschlagt, wird jedoch durch den erhaltenen Impuls und die erhaltene Energie weitergedrückt bis in die Nähe des gegenüberliegenden Elektromagneten, wo durch entsprechende Ansteuerung dafür gesorgt wird, daß das Gaswechselventil in seine Öffnungsstellung gerät. Zum Schließen wird der gleiche Vorgang in umgekehrter Reihefolge durchgeführt.Internal combustion engines with gas exchange valves, which are controlled by the excitation or de-excitation of an electromagnet, are state of the art. Examples of this can be found in DE-OS 30 24 109 or DE-OS 35 00 530. By switching an electromagnet on or off, an armature, which is coupled in terms of movement to the gas exchange valve, can detach from the electromagnet and is pushed away by spring force . In the middle position it is acted upon by springs on both sides, but is further pushed by the impulse and the energy obtained up to the vicinity of the opposite electromagnet, where appropriate control ensures that the gas exchange valve gets into its open position. To close, the same process is carried out in reverse order.
Im Stand der Technik ist beschrieben, daß das Gaswechselventil jeweils in seiner Öffnungs- und in seiner Schließstellung gehalten wird und seine Schließstellung nur durch einen entsprechenden Steuerungsimpuls auf den Elektromagneten verläßt.In the prior art it is described that the gas exchange valve is held in its open and in its closed position and leaves its closed position only by a corresponding control impulse on the electromagnet.
Weiterhin ist es Stand der Technik, daß man bei üblichen Nockenwellenmotoren die Phase, über die das Einlaßventil sich öffnet, immer im gleichen Winkelbereich der Kurbelwellenstellung ausführt, wobei der Öffnungszeitpunkt bereits vor dem oberen Totpunkt (OT) einsetzt, über die gesamte Abwärtsbewegung des Kolbens, dem sogenannten Saugtakt, andauert, und etwa 35° bis 90° nach dem unteren Totpunkt (UT) das Einlaßventil geschlossen wird. Die Menge der Gase, mit denen der Zylinder auf diese Weise befüllt wird, wird durch die Stellung der Drosselklappe gesteuert.Furthermore, it is state of the art that, in conventional camshaft engines, the phase over which the intake valve opens is always carried out in the same angular range of the crankshaft position, with the opening time already beginning before top dead center (TDC), over the entire downward movement of the piston, the so-called suction cycle, continues, and about 35 ° to 90 ° after bottom dead center (UT) the inlet valve is closed. The amount of gases with which the cylinder is filled in this way is controlled by the position of the throttle valve.
Die im Stand der Technik genannten Brennkraftmaschinen, die mit über Elektromagnete gesteuerten Gaswechselventilen arbeiten, können vom Prinzip her ohne Drosselklappe betrieben werden. Dabei stellt sich jedoch die Schwierigkeit ein, daß das Federsystem sehr steif ausgelegt werden muß, damit auch im Leerlauf oder bei geringer Lastanforderung die öffnungszeiten des Einlaßventiles ausreichend klein sind, um nur geringe Brennstoff-Luftgemische eintreten zu lassen.The internal combustion engines mentioned in the prior art, which work with gas exchange valves controlled by electromagnets, can in principle be operated without a throttle valve. The difficulty arises, however, that the spring system has to be designed very stiff so that the opening times of the inlet valve are sufficiently short even when idling or with a low load requirement to allow only small amounts of fuel and air to enter.
Aufgabe der Erfindung ist es, einen Weg aufzuzeigen, bei Brennkraftmaschinen der eingangs genannten Art in Bereichen niedriger Lastanforderung nur geringe Mengen des Brennstoff-Luftgemisches eintreten zu lassen.The object of the invention is to show a way to allow only small amounts of the fuel-air mixture to occur in internal combustion engines of the type mentioned in areas with low load requirements.
Die Aufgabe wird gelöst durch den Anspruch 1 oder Anspruch 2The object is achieved by claim 1 or claim 2
Erfindungsgemäß ist vorgesehen, daß das Gaswechselventil zum kurzzeitigen öffnen durch eine entsprechende Beschaltung der Magnete aus seiner Schließstellung bewegt wird und durch die Federwirkung in Richtung der öffnungsstellung beaufschlagt wird. Dort jedoch wird das Gaswechselventil nicht wie beim Stand der Technik eingefangen, um dann definiert wieder in die Schließstellung bewegt zu werden, sondern der Einfangmechanismus der öffnungsstellung wird nicht aktiviert. Bei einer Anordnung, wie sie in der DE-OS 35 00 530 beschrieben ist, wird also der der öffnungsstellung zugeordnete Elektromagnet aktiviert, so daß das Gaswechselventil wieder abgestoßen wird. Dieser Vorgang läßt sich durch eine entsprechende Beschaltung des Elektromagneten sogar noch unterstützen.According to the invention, it is provided that the gas exchange valve is opened from its closed position for short-term opening by a corresponding wiring of the magnets and is acted upon by the spring action in the direction of the open position. There, however, the gas exchange valve is not caught, as in the prior art, in order to then be moved back into the closed position in a defined manner, but the catching mechanism of the open position is not activated. In an arrangement as described in DE-OS 35 00 530, the electromagnet assigned to the open position is activated so that the gas exchange valve is repelled again. This process can even be supported by a corresponding wiring of the electromagnet.
Bei dem Gegenstand der DE-OS 30 24 109 wird der der Öffnungsstellung zugeordnete Elektromagnet nicht erregt, so daß der Anker, der sich in den Anziehungsbereich des Elektromagneten, der der Öffnungsstellung zugeordnet ist, bewegt, dort nicht angezogen wird, sondern durch die Federbeaufschlagung in die umgekehrte Richtung gleich wieder in Richtung des der Schließstellung zugeordneten Magneten gebracht wird. Dieser inzwischen wieder erregte Schließmagnet trägt dann Sorge, daß das Gaswechselventil in seiner Schließstellung bleibt.In the subject of DE-OS 30 24 109, the electromagnet assigned to the open position is not energized, so that the armature, which moves into the area of attraction of the electromagnet, which is assigned to the open position, is not attracted there, but by the spring action in the reverse direction is immediately brought back in the direction of the magnet associated with the closed position. This now re-energized closing magnet then ensures that the gas exchange valve remains in its closed position.
Ein besonders günstiger Zeitpunkt für die entsprechende Ansteuerung des Gaswechselventiles ist der Zeitpunkt kurz nach dem unteren Totpunkt, also dann, wenn sich im Inneren des Zylinders ein maximaler Unterdruck eingestellt hat und der Kolben sich bereits wieder in Aufwärtsbewegung befindet. Unter diesen Bedingungen wird eine optimale Verwirbelung des Gemisches innerhalb des Zylinders erreicht, was sich auf den nachfolgenden Verbrennungsprozeß günstig auswirkt. Der Kraftstoffbedarf eines Motors läßt sich auf diese Weise stark verringern.A particularly favorable point in time for the corresponding actuation of the gas exchange valve is the point in time shortly after bottom dead center, that is to say when a maximum negative pressure has set in the interior of the cylinder and the piston is already moving upwards again. Under these conditions, an optimal swirling of the mixture within the cylinder is achieved, which has a favorable effect on the subsequent combustion process. The fuel requirement of an engine can be greatly reduced in this way.
Die Auswahl des Zeitpunktes ist allerdings nur möglich, wenn das im Anspruch 1 beschriebene Verfahren durchgeführt wird, d.h. daß trotz des starken Druckunterschiedes zwischen dem Saugrohr und dem Zylinderinnern nur eine geringe Menge Brennstoff-Luftgemisch eintreten kann, was durch die vorgeschlagenen Maßnahmen, nämlich sehr kurze Öffnungszeiten zu erreichen, erzielt wird. Die in dem genannten Stand der Technik beschriebenen gattungsgemäßen Motoren konnten diesen Zeitpunkt der optimalen Verwirbelung des Gemisches nicht ausnutzen, da bei den bisherigen Ansteuerungsverfahren bei einer Öffnung zu diesem Zeitpünkt bereits zu viel Brennstoff-Luftgemisch in das Zylinderinnere eintrat, aus diesem Grunde mußte bei derartigen Motoren der Ansaughub auf einen früheren Zeitpunkt verlegt werden, nämlich in den Bereich zwischen OT und UT des Saughubes, wenn der Druckunterschied zwischen Saugrohr und Zylinderinnern noch nicht so groß war.However, the selection of the point in time is only possible if the method described in claim 1 is carried out, i.e. that despite the strong pressure difference between the intake manifold and the cylinder interior, only a small amount of fuel-air mixture can occur, which is achieved by the proposed measures, namely to achieve very short opening times. The generic engines described in the cited prior art could not take advantage of this point in time of the optimal swirling of the mixture, since in the previous control methods, too much fuel-air mixture already entered the cylinder interior at an opening at this time, for this reason such engines had to the suction stroke is moved to an earlier point in time, namely in the area between TDC and LDC of the suction stroke, if the pressure difference between the suction pipe and the cylinder interior was not yet so great.
Im folgenden wird die Erfindung anhand der Figur beschrieben. Die Figur zeigt schematisch eine Anordnung zur Ansteuerung eines Gaswechselventiles. Mit (10) ist das Innere eines Zylinders gezeigt, dem über einen Ansaugkanal (12) ein Benzin-Luftgemisch zugeführt werden kann. Ein Ventilteller (14) eines Einlaßventiles gibt beim Ausheben aus seinem Sitz die Öffnung des Einlaßkanales (12) frei, so daß das Gemisch in den Zylinder (10) eintreten kann. Der Ventilteller (14) des Einlaßventiles wird über einen Ventilschaft (16) bewegt, der mit einer Ankerplatte (18) verbunden ist. Die Ankerplatte (18) liegt in der Schließstellung des Ventils an den Polen eines Elektromagneten (20) an, in der Offnungsstellung des Ventiles an den Polen eines Elektromagneten (22). Die Elektromagnete (20) und (22) sind in einem Gehäuse (24) angeordnet. In diesem Gehäuse (24) ist gleichzeitig eine Bohrung (26) vorgesehen, die einen Teil des Ventilschaftes (16) umgibt und in der Federn (28) und (30) vorgesehen sind. Die Federn (28) stützen sich an einem Rand der Bohrung (26) ab und beaufschlagen die Ankerplatte (18) in der Schließstellung des Ventils in Richtung der Bewegung zur Öffnungsstellung, die Federn (30) liegen auf der anderen Seite der Ankerplatte ebenfalls am Rand der Bohrung an und beaufschlagen die Ankerplatte (18) des Ventiles in der Öffnungsstellung in Richtung der Bewegung zur Schließstellung. In der Schließstellung sind die Elektromagnete (20) erregt, während die Federn (28) die Ankerplatte in Richtung weg von den Elektromagneten (20), also entgegengesetzt zur Anziehungskraft der Elektromagnete beaufschlagen. Die durch die Federn (28) ausgeübte Kraft ist jedoch geringer als die Haltekraft des Elektromagneten (20). Mit Abschalten des Elektromagneten (20) wird der Anker (18) durch die Federn (28) weggedrückt, das Ventil bewegt sich in seine Offnungsstellung. Sind nun die Elektromagnete (22) erregt, wird der Anker (18) bei seiner Annäherung an die Elektromagnete (22) von diesen angezogen, die Feder (30) wird dann gespannt und die Feder (28) ist entspannt.The invention is described below with reference to the figure. The figure shows schematically an arrangement for controlling a gas exchange valve. (10) shows the interior of a cylinder, to which a gasoline-air mixture can be supplied via an intake duct (12). A valve disk (14) of an inlet valve opens the opening of the inlet channel (12) when it is lifted out of its seat, so that the mixture can enter the cylinder (10). The valve plate (14) of the inlet valve is moved via a valve stem (16) which is connected to an anchor plate (18). The anchor plate (18) is in the closed position of the valve on the poles of an electromagnet (20), in the open position of the valve on the poles of an electromagnet ten (22). The electromagnets (20) and (22) are arranged in a housing (24). In this housing (24) a bore (26) is provided which surrounds part of the valve stem (16) and in which springs (28) and (30) are provided. The springs (28) are supported on one edge of the bore (26) and act on the anchor plate (18) in the closed position of the valve in the direction of the movement to the open position, the springs (30) are also on the other side of the anchor plate on the edge the bore and act on the anchor plate (18) of the valve in the open position in the direction of the movement to the closed position. In the closed position, the electromagnets (20) are energized, while the springs (28) act on the armature plate in the direction away from the electromagnets (20), that is, counter to the attractive force of the electromagnets. However, the force exerted by the springs (28) is less than the holding force of the electromagnet (20). When the electromagnet (20) is switched off, the armature (18) is pushed away by the springs (28), the valve moves into its open position. If the electromagnets (22) are now energized, the armature (18) is attracted to the electromagnets (22) when they approach it, the spring (30) is then tensioned and the spring (28) is relaxed.
Erfindungsgemäß ist vorgesehen, bei dieser Bewegung von der Schließstellung in die Öffnungsstellung den Elektromagneten (22) nicht anzusteuern, so daß nach Entspannung der Federn (28) und nach dem Zusammendrücken der Federn (30) die Federn (30) sofort wieder die Bewegungsrichtung umkehren und den Anker (18) wieder zurück in die Nähe der Elektromagneten (20) drücken, so daß das System eine einzige Schwingung durchgeführt hat. Der Elektromagnet (20) ist inzwischen wieder erregt worden, so daß mit dieser Annäherung der Ankerplatte (18) an den Elektromagneten (20) der Anker (18) von dem Elektromagneten (20) wieder angezogen wird und das Ventil wieder schließt. Der Ventilteller (14) hat sich somit nur sehr kurz von seinem Sitz abgehoben und sogleich wieder in seine Schließstellung bewegt, so daß nur für einen sehr kurzen Zeitraum ein Brennstoff-Luftgemisch in das Innere des Zylinders (10) eintreten konnte.According to the invention, the electromagnet (22) is not actuated during this movement from the closed position into the open position, so that after the springs (28) have been relaxed and the springs (30) have been compressed, the springs (30) immediately reverse the direction of movement and press the armature (18) back near the electromagnets (20) so that the system has performed a single vibration. The electromagnet (20) has meanwhile been energized again, so that with this approach of the armature plate (18) to the electromagnet (20), the armature (18) is attracted again by the electromagnet (20) and the valve closes again. The valve disc (14) has thus only very briefly lifted off its seat and immediately moved back into its closed position, so that a fuel-air mixture could only enter the interior of the cylinder (10) for a very short period of time.
Auf diese Weise läßt sich der Zeitpunkt des größten Druckunterschiedes zwischen dem Umgebungsdruck im Saugrohr und dem Zylinderinnern (10) ausnutzen, nämlich der Zeitpunkt um oder direkt nach dem Erreichen des unteren Totpunktes. Ein Eintritt des Brennstoff-Luftgemisches zu diesem Zeitpunkt sorgt für eine optimale Verwirbelung im Brennraum, so daß der Energiegehalt des Brennstoff-Luftgemisches optimal ausgenutzt wird und gleichzeitig das Abgasverhalten positiv beeinflußt wird.In this way, the time of the greatest pressure difference between the ambient pressure in the intake manifold and the cylinder interior (10) can be exploited, namely the time at or immediately after reaching bottom dead center. An entry of the fuel-air mixture at this time ensures an optimal swirl in the combustion chamber, so that the energy content of the fuel-air mixture is optimally used and at the same time the exhaust gas behavior is positively influenced.
Claims (3)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3708373A DE3708373C1 (en) | 1987-03-14 | 1987-03-14 | Method for operating an intake valve of an internal combustion engine |
| DE3708373 | 1987-03-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0283671A1 EP0283671A1 (en) | 1988-09-28 |
| EP0283671B1 true EP0283671B1 (en) | 1990-10-24 |
Family
ID=6323111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88101222A Expired - Lifetime EP0283671B1 (en) | 1987-03-14 | 1988-01-28 | Internal combustion engine inlet valve control process |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4841923A (en) |
| EP (1) | EP0283671B1 (en) |
| JP (1) | JP2545110B2 (en) |
| DE (2) | DE3708373C1 (en) |
| ES (1) | ES2018307B3 (en) |
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| DE3826978A1 (en) * | 1988-08-09 | 1990-02-15 | Meyer Hans Wilhelm | ELECTROMAGNETICALLY OPERABLE ACTUATOR |
| DE3826977A1 (en) * | 1988-08-09 | 1990-02-15 | Meyer Hans Wilhelm | CONTROL DEVICE FOR A GAS EXCHANGE VALVE OF AN INTERNAL COMBUSTION ENGINE |
| DE3836725C1 (en) * | 1988-10-28 | 1989-12-21 | Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De | |
| JPH0617642B2 (en) * | 1988-10-31 | 1994-03-09 | いすゞ自動車株式会社 | Electromagnetically driven valve controller |
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| DE4035376C2 (en) * | 1989-11-16 | 2000-04-27 | Volkswagen Ag | Actuator for a lift valve |
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| JP3724542B2 (en) * | 1998-11-18 | 2005-12-07 | 日産自動車株式会社 | Intake air amount control device for variable valve engine |
| DE10246182B3 (en) * | 2002-10-02 | 2004-03-04 | Meta Motoren- Und Energie-Technik Gmbh | Auxiliary control valve for intake channel of reciprocating piston engine has flow body defining annular flow channel and cooperating valve element displaced from central position by opening and closure magnets |
| US7004120B2 (en) * | 2003-05-09 | 2006-02-28 | Warren James C | Opposed piston engine |
| DE10321017A1 (en) * | 2003-05-10 | 2004-12-02 | Bayerische Motoren Werke Ag | Stroke actuator for internal combustion engines with electric valve train |
| US7270093B2 (en) * | 2005-04-19 | 2007-09-18 | Len Development Services Corp. | Internal combustion engine with electronic valve actuators and control system therefor |
| US8037853B2 (en) * | 2005-04-19 | 2011-10-18 | Len Development Services Usa, Llc | Internal combustion engine with electronic valve actuators and control system therefor |
| US10344682B1 (en) | 2017-01-13 | 2019-07-09 | Andre H Vandenberg | Engine valve shaft with flow passages for intake and exhaust control |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2630512A1 (en) * | 1976-07-07 | 1978-01-12 | Daimler Benz Ag | Valve control gear for IC engine - has two electromagnets and one armature acting as stops operating at either end position of valve |
| WO1981001626A1 (en) * | 1979-12-03 | 1981-06-11 | M Gottschall | A two position mechanism |
| DE3024109A1 (en) * | 1980-06-27 | 1982-01-21 | Pischinger, Franz, Prof. Dipl.-Ing. Dr.Techn., 5100 Aachen | ELECTROMAGNETIC OPERATING DEVICE |
| DE3401362C3 (en) * | 1983-02-04 | 1998-03-26 | Fev Motorentech Gmbh | Process for controlling four-stroke piston internal combustion engines |
| DE3307070C2 (en) * | 1983-03-01 | 1985-11-28 | FEV Forschungsgesellschaft für Energietechnik und Verbrennungsmotoren mbH, 5100 Aachen | Setting device for a switching element that can be adjusted between two end positions |
| DE3307683C1 (en) * | 1983-03-04 | 1984-07-26 | Klöckner, Wolfgang, Dr., 8033 Krailling | Method for activating an electromagnetic actuator and device for carrying out the method |
| DE3500530A1 (en) * | 1985-01-09 | 1986-07-10 | Binder Magnete GmbH, 7730 Villingen-Schwenningen | Device for the electromagnetic control of piston valves |
-
1987
- 1987-03-14 DE DE3708373A patent/DE3708373C1/en not_active Expired
-
1988
- 1988-01-28 ES ES88101222T patent/ES2018307B3/en not_active Expired - Lifetime
- 1988-01-28 EP EP88101222A patent/EP0283671B1/en not_active Expired - Lifetime
- 1988-01-28 DE DE8888101222T patent/DE3860854D1/en not_active Expired - Lifetime
- 1988-03-08 US US07/165,484 patent/US4841923A/en not_active Expired - Lifetime
- 1988-03-11 JP JP63059203A patent/JP2545110B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19712063A1 (en) * | 1997-03-24 | 1998-10-01 | Braunewell Markus | Electro-magnetic drive for activating valve of combustion engine |
| DE19712669A1 (en) * | 1997-03-26 | 1998-10-08 | Daimler Benz Ag | Electromagnetically operated engine gas changeover valve |
| DE19712669C2 (en) * | 1997-03-26 | 2000-03-30 | Daimler Chrysler Ag | Electromagnetically controlled valve |
| DE19743081A1 (en) * | 1997-09-30 | 1999-04-01 | Bayerische Motoren Werke Ag | Electromagnetic actuator arrangement for control of lift valve |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3708373C1 (en) | 1988-07-14 |
| JP2545110B2 (en) | 1996-10-16 |
| US4841923A (en) | 1989-06-27 |
| ES2018307B3 (en) | 1991-04-01 |
| DE3860854D1 (en) | 1990-11-29 |
| EP0283671A1 (en) | 1988-09-28 |
| JPS63248907A (en) | 1988-10-17 |
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