EP0968357A1 - Actuator operating device for electromagnetic valve actuation in internal combustion engines - Google Patents

Actuator operating device for electromagnetic valve actuation in internal combustion engines

Info

Publication number
EP0968357A1
EP0968357A1 EP98965229A EP98965229A EP0968357A1 EP 0968357 A1 EP0968357 A1 EP 0968357A1 EP 98965229 A EP98965229 A EP 98965229A EP 98965229 A EP98965229 A EP 98965229A EP 0968357 A1 EP0968357 A1 EP 0968357A1
Authority
EP
European Patent Office
Prior art keywords
actuator
actuators
internal combustion
lead frame
control unit
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
EP98965229A
Other languages
German (de)
French (fr)
Other versions
EP0968357B1 (en
Inventor
Hermann Bäumel
Gunther Breu
Günther ALBERTER
Werner Flierl
Matthias Gramann
Gerhard Hettich
Werner Wiedemann
Wolfgang Thiel
Kurt Maute
Horst Kretschmer
Jürgen Schenk
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
Daimler Benz AG
Temic Telefunken Microelectronic 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
Application filed by DaimlerChrysler AG, Daimler Benz AG, Temic Telefunken Microelectronic GmbH filed Critical DaimlerChrysler AG
Publication of EP0968357A1 publication Critical patent/EP0968357A1/en
Application granted granted Critical
Publication of EP0968357B1 publication Critical patent/EP0968357B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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

Definitions

  • the invention relates to a device for operating actuators for electromagnetic valve control in internal combustion engines.
  • the actuators designed as a separate assembly essentially consist of an opening magnet and a closing magnet, which are connected to one another by at least one housing part.
  • the opening magnet and the closing magnet are electromagnets, each consisting of an excitation coil and a yoke.
  • the excitation coils of the electromagnets are energized via several contacts which are led out of the housing part by means of a plug. Between the
  • the opening magnet has a bushing for a plunger that connects the armature plate to an actuator spring plate.
  • An actuator spring plate and the housing part or the outside of the opening magnet, an actuator spring is arranged.
  • An actuator forms a functional unit with a gas exchange valve, whereby the gas exchange valve, corresponding to a conventional cylinder head with camshafts, is inserted into the valve seat of the.
  • a functional unit consisting of an actuator and a gas exchange valve
  • the actuator spring plate and the valve spring plate are pressed against one another.
  • the anchor plate In the rest position of the functional unit, the anchor plate is located exactly in the middle between the opening magnet and the closing magnet.
  • the gas exchange valve is in a middle position between the Valve seat of the cylinder head at which the valve is closed and the position in which the valve is open to the maximum.
  • the actuators are controlled via an actuator control device which controls the valve clearance of the internal combustion engine through the start and duration of the energization of the opening magnets and the closing magnets.
  • an actuator control device which controls the valve clearance of the internal combustion engine through the start and duration of the energization of the opening magnets and the closing magnets.
  • data provided by sensors are required, from which the actuator control device determines, for example, the crankshaft speed and the crankshaft rotation angle.
  • At least two actuators are necessary for an internal combustion engine using two-valve technology with one cylinder.
  • a four-valve internal combustion engine with six cylinders up to 24 actuators are integrated in one cylinder head.
  • the invention has for its object to provide a device for operating actuators for electromagnetic valve control in internal combustion engines, in which the actuators are arranged in a maintenance-friendly manner, the cooling is ensured and the connection to the actuator control unit takes place.
  • An actuator control device is arranged on the actuator support and is connected to further control devices, to motor sensors and to the power supply.
  • the internal combustion engine has a cylinder head, on which the actuator carrier is mounted as a separate component in a non-positive and positive manner.
  • the actuator shafts in the actuator carrier are surrounded by coolant channels which are connected to coolant channels of the cylinder head or to a coolant circuit of the internal combustion engine,
  • the further control devices are integrated in the actuator control device.
  • the actuator support has a cover that encompasses the actuator control device, which cover may serve as a design support for the manufacturer of the internal combustion engine and is, for example, made of plastic.
  • the cover has a plug device through which the actuator control device is connected to external electronic components.
  • a lead frame with lead frame connections is injected into a plastic part and is arranged between the actuators and the control device.
  • a cooled intermediate level is arranged between the actuator carrier and the actuator control device, which is advantageously designed as an aluminum plate.
  • the cooled intermediate level has bushings for the lead frame connections of the lead frame.
  • the cooled intermediate level is connected to the coolant channels of the cylinder head or to the coolant circuit of the internal combustion engine.
  • the actuator control device is arranged directly at the actuators, with the cooling of the
  • Actuator control unit and the actuators is guaranteed. Due to the layered structure, the actuators are easy to reach during maintenance work.
  • FIG. 1 shows a schematic representation of a sectional view through an actuator designed as a separate assembly
  • FIG. 2 shows the schematic representation of the layered structure of the device for operating actuators for electromagnetic valve control of a four-cylinder in-line engine
  • Figure 3 is a schematic representation of a section through a piston internal combustion engine of the actuator carrier with the actuators, the cooled
  • the actuator A consists essentially of an opening magnet ⁇ M with a bushing and a closing magnet SM, which are connected to each other by a housing part GT.
  • the opening magnet ⁇ M and the closing magnet SM are electromagnets, each consisting of a yoke and an excitation coil.
  • a circular armature plate AP made of a ferromagnetic material is arranged between the opening magnet ⁇ M and the closing magnet SM.
  • the anchor plate AP is connected to an actuator spring plate AFT via a plunger S.
  • the plunger S is guided through the opening magnet ⁇ M.
  • An actuator spring AF is arranged between the actuator spring plate AFT and the opening magnet ⁇ M, which brings about the resetting of the anchor plate AP after it has been attracted by the closer magnet SM.
  • FIG. 2 shows the layered structure of the device for operating actuators A for electromagnetic valve control for a four-cylinder piston internal combustion engine of a motor vehicle.
  • the cylinders of the piston internal combustion engine are designed using four-valve technology, with an actuator A being provided for each gas exchange valve GV.
  • 6 actuators A are arranged in the actuator shafts AS of the actuator support AT 1.
  • the actuator bracket AT is screwed to the cylinder head ZK of the piston internal combustion engine in a positive and non-positive manner.
  • An actuator A forms a functional unit with a gas exchange valve GV.
  • the gas exchange valves GV are installed in the cylinder head ZK of the piston internal combustion engine.
  • the gas exchange valves GV are each drawn into the valve seat of the cylinder head ZK by a valve spring VF via a valve spring plate VFT attached to the valve stem VS of the gas exchange valve GV.
  • a functional nellen unit consisting of a gas exchange valve GV and an actuator A
  • the actuator spring plate AFT and the valve spring plate VFT are pressed against each other, the armature plate AP being exactly in a central position between the opening magnet ⁇ M and the closing magnet SM.
  • the valve spring VF causes the armature plate AP to return to this central position after the actuator spring plate AFT has moved away from it
  • Opening magnet ⁇ M was opened to open the gas exchange valve GV.
  • the actuator shafts AS which serve to receive the actuators A, are each milled out with the angles to the bottom surface of the actuator carrier such that the tappet of the actuators A forms a straight line with the valve stem VS of the gas exchange valves GV.
  • Each actuator shaft AS of an actuator carrier AT has a device for fixing the actuators A. This device can be designed, for example, as a bayonet lock.
  • the actuator shafts AS are equipped with the actuators A.
  • the connectors SR of the actuators A with the contacts K protrude from the actuator carrier AT.
  • the contacts K are with the excitation coil of the opening magnet ⁇ M and
  • the actuator carrier AT has cooling water channels WK which surround each actuator A and which are connected to the cooling water circuit of the internal combustion engine via the cylinder head ZK.
  • the cooling water located in the cooling water channels WK of the actuator bracket AT forms a water jacket which considerably reduces the damping of the
  • a cooled intermediate level which is designed as an aluminum plate AE, is attached to the actuator support AT with the actuators A.
  • the aluminum plate AE also has cooling water channels WK, which are horizontally worked into the aluminum plate AE and which are connected to the cooling water channels WK of the actuator bracket AT. If necessary, the cooling water channels WK of the actuator bracket AT and the aluminum plate AE are connected to the cooling water circuit of the internal combustion engine via cooling water hoses which are led out to the side.
  • the aluminum plate AE has bushings for lead frame connections of a lead frame.
  • the lead frame is injected into a multi-functional plastic part KT, which is attached to the aluminum plate AE.
  • the plastic part KT takes over the insulation of the lead frame SG, for example from the Aluminum plate AE.
  • the feedthroughs of the aluminum plate AE, into which the multifunctional plastic part KT with the lead frame connections is inserted, are designed as solid mechanical slots. Through these slots, the connectors SR of the actuators A are fixed with the contacts K, and the lead frame connections of the lead frame are reliably electrically connected to the contacts K of the connectors SR of the actuators A.
  • An actuator control device AG is attached to the multifunctional plastic part KT, which takes over all functions necessary for the control of the actuators A.
  • the actuator control unit AG is connected to the power supply of the motor vehicle as well
  • the engine sensors enable the actuator control unit AG to determine the crankshaft rotation angle and the crankshaft speed.
  • the actuator control unit AG can be connected to further sensors, which for example recognize the load state of the piston internal combustion engine.
  • the actuator control unit AG is protected against excessive heating due to the high heat development during the operation of the actuators A by the cooling of the aluminum plate AE.
  • the aluminum plate AE with the multifunctional plastic part KT and the actuator control unit AG is covered by a cover AD.
  • the cover AD is off
  • Manufactured plastic and also serves as a design carrier of the manufacturer of the piston internal combustion engine or motor vehicle.
  • the cover AD prevents moisture from penetrating into the interior of the cover.
  • a plug-in device SV is provided on the side of the cover AD, through which the actuator control unit AG with the power supply, further control units and further sensors of the
  • Piston engine is connected.
  • FIG. 3 shows a section through the device for operating actuators A for electromagnetic valve control in the assembled state.
  • the figure shows primarily the compact structure of the device. In the event of a defect, the plug device SV of the cover will be repaired
  • the cover AD can then be removed by yourself.
  • the Actuator control unit AG, the multifunctional plastic part KT with the lead frame and the aluminum plate AE are removed together. From the now exposed actuators A, the defective actuator can be lifted out of the actuator shaft AS of the actuator support AT. This is done, for example, with a special tool that is used to release the bayonet lock by turning it a quarter turn.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The invention relates to an actuator operating device for electromagnetic valve actuation in internal combustion engines.

Description

Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen Device for operating actuators for electromagnetic valve control in internal combustion engines
Die Erfindung betrifft eine Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen. Die als separate Baugruppe ausgeführten Aktoren bestehen im wesentlichen aus einem Öffnermagnet und einem Schließermagnet, die durch mindestens ein Gehäuseteil miteinander verbunden sind. Der Öffnermagnet und der Schließermagnet sind Elektromagneten, die jeweils aus einer Erregerspule und einem Joch bestehen. Die Erregerspulen der Elektromagnete werden über mehrere Kontakte, die mittels eines Steckers aus dem Gehäuseteil herausgeführt werden, bestromt. Zwischen demThe invention relates to a device for operating actuators for electromagnetic valve control in internal combustion engines. The actuators designed as a separate assembly essentially consist of an opening magnet and a closing magnet, which are connected to one another by at least one housing part. The opening magnet and the closing magnet are electromagnets, each consisting of an excitation coil and a yoke. The excitation coils of the electromagnets are energized via several contacts which are led out of the housing part by means of a plug. Between the
Öffnermagnet und dem Schließermagnet befindet sich eine Ankerplatte aus einem ferromagnetischen Werkstoff, Die Ankerplatte wird durch Bestromen der Erregerspule des Öffnermagneten oder der Erregerspule des Schließermagneten in die jeweilige Richtung bewegt. Der Öffnermagnet weist eine Durchführung für einen Stößel auf, der die Ankerplatte mit einem Aktorfederteller verbindet. Zwischen demThere is an armature plate made of a ferromagnetic material in the opening magnet and the closing magnet. The armature plate is moved in the respective direction by energizing the excitation coil of the opening magnet or the excitation coil of the closing magnet. The opening magnet has a bushing for a plunger that connects the armature plate to an actuator spring plate. Between the
Aktorfederteller und dem Gehäuseteil bzw. der Außenseite des Öffnermagneten ist eine Aktorfeder angeordnet.An actuator spring plate and the housing part or the outside of the opening magnet, an actuator spring is arranged.
Ein Aktor bildet mit einem Gaswechselventil eine funktioneile Einheit, wobei das Gaswechselventil, entsprechend einem konventionellen Zylinderkopf mit Nocken- wellen, mittels einer Ventilfeder und einem Ventilfederteller in den Ventilsitz desAn actuator forms a functional unit with a gas exchange valve, whereby the gas exchange valve, corresponding to a conventional cylinder head with camshafts, is inserted into the valve seat of the. By means of a valve spring and a valve spring plate
Zylinderkopfes gezogen wird.Cylinder head is pulled.
Ist eine funktioneile Einheit aus einem Aktor und einem Gaswechselventil an der Brennkraftmaschine montiert, werden der Aktorfederteller und der Ventiifederteller gegeneinander gepreßt. In der Ruhelage der funktionellen Einheit befindet sich die Ankerplatte exakt in der Mitte zwischen dem Öffnermagnet und dem Schließermagnet. Das Gaswechselventil befindet sich dabei in einer Mittelstellung zwischen dem Ventilsitz des Zylinderkopfes, bei der das Ventil geschlossen ist, und der Position, in der das Ventil maximal geöffnet ist.If a functional unit consisting of an actuator and a gas exchange valve is mounted on the internal combustion engine, the actuator spring plate and the valve spring plate are pressed against one another. In the rest position of the functional unit, the anchor plate is located exactly in the middle between the opening magnet and the closing magnet. The gas exchange valve is in a middle position between the Valve seat of the cylinder head at which the valve is closed and the position in which the valve is open to the maximum.
Da die Leistungsaufnahme eines Aktors im Bereich von einigen hundert Watt liegen kann, müssen Vorkehrungen zum Kühlen der Aktoren bzw. zum Abführen der un- vermeidlich anfallenden Wärme vorgesehen werden.Since the power consumption of an actuator can be in the range of a few hundred watts, measures must be taken to cool the actuators or to dissipate the inevitable heat.
Die Ansteuerung der Aktoren erfolgt über ein Aktorsteuergerät, welches durch den Beginn und die Dauer des Bestromens der Öffnermagneten und der Schließermagneten das Ventilspiel der Brennkraftmaschine steuert. Dazu werden von Sensoren bereitgestellte Daten benötigt, aus denen das Aktorsteuergerät beispielsweise die Kurbelwellendrehzahl und den Kurbelwellendrehwinkel bestimmt.The actuators are controlled via an actuator control device which controls the valve clearance of the internal combustion engine through the start and duration of the energization of the opening magnets and the closing magnets. For this purpose, data provided by sensors are required, from which the actuator control device determines, for example, the crankshaft speed and the crankshaft rotation angle.
Für eine Brennkraftmaschine in Zwei - Ventil - Technik mit einem Zylinder sind mindestens zwei Aktoren notwendig. Bei einer in Vier - Ventil - Technik ausgeführten Brennkraftmaschine mit sechs Zylindern werden bis zu 24 Aktoren in einem Zylinderkopf integriert. Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen anzugeben, bei der die Aktoren wartungsfreundlich angeordnet sind, die Kühlung gewährleistet ist und die Anbindung an das Aktorsteuergerät erfolgt.At least two actuators are necessary for an internal combustion engine using two-valve technology with one cylinder. In a four-valve internal combustion engine with six cylinders, up to 24 actuators are integrated in one cylinder head. The invention has for its object to provide a device for operating actuators for electromagnetic valve control in internal combustion engines, in which the actuators are arranged in a maintenance-friendly manner, the cooling is ensured and the connection to the actuator control unit takes place.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruches 1 gelöst, wobei die Aktoren zur elektromagnetischen Ventilsteuerung als diskreteThis object is achieved according to the features of claim 1, wherein the actuators for electromagnetic valve control as discrete
Baugruppe ausgeführt und in einem Aktorträger in Aktorschächten angeordnet sind. Auf dem Aktorträger ist ein Aktorsteuergerät angeordnet, das mit weiteren Steuergeräten, mit Motorsensoren sowie mit der Stromversorgung verbunden ist.Assembly performed and arranged in an actuator bracket in actuator shafts. An actuator control device is arranged on the actuator support and is connected to further control devices, to motor sensors and to the power supply.
Die Brennkraftmaschine weist einen Zylinderkopf auf, auf den der Aktorträger als separates Bauteil kraft - und formschlüssig montiert ist.The internal combustion engine has a cylinder head, on which the actuator carrier is mounted as a separate component in a non-positive and positive manner.
Die Aktorschächte im Aktorträger sind von Kühlmittelkanälen umgeben, die mit Kühlmittelkanälen des Zylinderkopfes bzw. mit einem Kühlmittelkreislauf der Brennkraftmaschine verbunden sind,The actuator shafts in the actuator carrier are surrounded by coolant channels which are connected to coolant channels of the cylinder head or to a coolant circuit of the internal combustion engine,
In einer Weiterbildung der Erfindung ist vorgesehen, daß die weiteren Steuergeräte in dem Aktorsteuergerät integriert sind. In einer weiteren Weiterbildung der Erfindung ist vorgesehen, daß der Aktorträger eine das Aktorsteuergerät umfassende Abdeckung aufweist, die gegebenenfalls als Designträger des Herstellers der Brennkraftmaschine dient und beispielsweise aus Kunststoff gefertigt ist. Die Abdeckung weist eine Steckvorrichtung auf, durch die das Aktorsteuergerät mit externen elektronischen Komponenten verbunden ist.In a development of the invention it is provided that the further control devices are integrated in the actuator control device. In a further development of the invention, it is provided that the actuator support has a cover that encompasses the actuator control device, which cover may serve as a design support for the manufacturer of the internal combustion engine and is, for example, made of plastic. The cover has a plug device through which the actuator control device is connected to external electronic components.
Zwischen den Aktoren und dem Steuergerät ist ein in ein Kunststoffteil eingespritztes Stanzgitter mit Stanzgitteranschlüssen angeordnet, wobei die Stanzgitteranschlüsse des Stanzgitters mit den Kontakten der Stecker der Aktoren kontaktiert sind, und die den Stanzgitteranschlüssen entgegengesetzten Enden des Stanzgitters mit dem Aktorsteuergerät kontaktiert sind.A lead frame with lead frame connections is injected into a plastic part and is arranged between the actuators and the control device.
In einer vorteilhaften Weiterbildung der Er indung ist vorgesehen, daß zwischen dem Aktorträger und dem Aktorsteuergerät eine gekühlte Zwischenebene angeordnet ist, die vorteilhaft als Aluminiumplatte ausgeführt ist.In an advantageous further development of the invention, it is provided that a cooled intermediate level is arranged between the actuator carrier and the actuator control device, which is advantageously designed as an aluminum plate.
Die gekühlte Zwischenebene weist dabei Durchführungen für die Stanzgitteran- Schlüsse des Stanzgitters auf.The cooled intermediate level has bushings for the lead frame connections of the lead frame.
Zudem ist die gekühlte Zwischenebene mit den Kühlmittelkanälen des Zylinderkopfes bzw. mit dem Kühlmittelkreislauf der Brennkraftmaschine verbunden.In addition, the cooled intermediate level is connected to the coolant channels of the cylinder head or to the coolant circuit of the internal combustion engine.
Durch den kompakten Aufbau der erfindungsgemäßen Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen ist das Aktorsteuergerät unmittelbar bei den Aktoren angeordnet, wobei die Kühlung desDue to the compact structure of the device according to the invention for operating actuators for electromagnetic valve control in internal combustion engines, the actuator control device is arranged directly at the actuators, with the cooling of the
Aktorsteuergerätes und der Aktoren gewährleistet ist. Durch den schichtweisen Aufbau sind die Aktoren bei Wartungsarbeiten einfach zu erreichen.Actuator control unit and the actuators is guaranteed. Due to the layered structure, the actuators are easy to reach during maintenance work.
Im folgenden wird die erfindungsgemäße Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung anhand von einem Ausführungsbeispiei für eine Kolbenbrennkraftmaschine mit vier, in Reihe angeordneten Zylindern im Zusammenhang mit drei Figuren dargestellt und erläutert.In the following, the device according to the invention for operating actuators for electromagnetic valve control is illustrated and explained on the basis of an exemplary embodiment for a piston internal combustion engine with four cylinders arranged in series in connection with three figures.
Es zeigen:Show it:
Figur 1 die schematische Darstellung eines Schnittbildes durch einen als separate Baugruppe ausgeführten Aktor, Figur 2 die schematische Darstellung des schichtweisen Aufbaus der Vorrichtung zum Betrieb von Aktoren zur elektromagnetischen Ventilsteuerung eines Vierzylinder Reihenmotors,FIG. 1 shows a schematic representation of a sectional view through an actuator designed as a separate assembly, FIG. 2 shows the schematic representation of the layered structure of the device for operating actuators for electromagnetic valve control of a four-cylinder in-line engine,
Figur 3 die schematische Darstellung eines Schnittes durch eine Kolben- brennkraftmaschine des Aktorträgers mit den Aktoren, der gekühltenFigure 3 is a schematic representation of a section through a piston internal combustion engine of the actuator carrier with the actuators, the cooled
Zwischenebene, dem multifunktionalen Kunststoffteil sowie der Abdeckung.Intermediate level, the multifunctional plastic part and the cover.
In der Figur 1 ist ein als vormontierte Baugruppe ausgeführter Aktor A dargestellt. Der Aktor A besteht im wesentlichen aus einem Öffnermagnet ÖM mit einer Durchführung und einem Schließermagnet SM, die durch ein Gehäuseteil GT miteinander verbunden sind. Der Öffnermagnet ÖM und der Schließermagnet SM sind Elektromagneten, die jeweils aus einem Joch und einer Erregerspule bestehen. Zwischen dem Öffnermagnet ÖM und dem Schließermagnet SM ist eine kreisrunde Ankerplat- te AP aus einem ferromagnetischen Werkstoff angeordnet. Die Ankerplatte AP ist über einen Stößel S mit einem Aktorfederteller AFT verbunden. Der Stößel S wird dabei durch die Durchführung des Öffnermagneten ÖM geführt. Zwischen dem Aktorfederteller AFT und dem Öffnermagnet ÖM ist eine Aktorfeder AF angeordnet, die die Rückstellung der Ankerplatte AP bewirkt, nachdem diese von dem Schlie- ßermagneten SM angezogen wurde.1 shows an actuator A designed as a preassembled module. The actuator A consists essentially of an opening magnet ÖM with a bushing and a closing magnet SM, which are connected to each other by a housing part GT. The opening magnet ÖM and the closing magnet SM are electromagnets, each consisting of a yoke and an excitation coil. A circular armature plate AP made of a ferromagnetic material is arranged between the opening magnet ÖM and the closing magnet SM. The anchor plate AP is connected to an actuator spring plate AFT via a plunger S. The plunger S is guided through the opening magnet ÖM. An actuator spring AF is arranged between the actuator spring plate AFT and the opening magnet ÖM, which brings about the resetting of the anchor plate AP after it has been attracted by the closer magnet SM.
In der Figur 2 ist der schichtweise Aufbau der Vorrichtung zum Betrieb von Aktoren A zur elektromagnetischen Ventilsteuerung für eine vierzylindrige Kolbenbrennkraftmaschine eines Kraftfahrzeuges dargestellt. Die Zylinder der Kolbenbrennkraftmaschine sind in Vier - Ventil - Technik ausgeführt, wobei für jedes Gaswechselventil GV ein Aktor A vorgesehen ist. Dabei sind in den Aktorschächten AS des Aktorträgers AT 1 6 Aktoren A angeordnet. Der Aktorträger AT wird auf dem Zylinderkopf ZK der Kolbenbrennkraftmaschine kraft - und formschlüssig verschraubt. Ein Aktor A bildet mit einem Gaswechselventil GV eine funktioneile Einheit. Die Gaswechselventile GV sind im Zylinderkopf ZK der Kolbenbrennkraftmaschine mon- tiert. Dabei werden die Gaswechselventile GV von jeweils einer Ventilfeder VF über einen am Ventilschaft VS des Gaswechselventils GV befestigten Ventilfederteller VFT in den Ventilsitz des Zylinderkopfes ZK gezogen. In der Ruhelage einer funktio- nellen Einheit aus einem Gaswechselventil GV und einem Aktor A werden der Aktorfederteller AFT und der Ventilfederteller VFT gegeneinander gepreßt, wobei sich die Ankerplatte AP exakt in einer Mittellage zwischen dem Öffnermagneten ÖM und dem Schließermagneten SM befindet. Die Ventilfeder VF bewirkt die Rückstellung der Ankerplatte AP in diese Mittellage, nachdem der Aktorfederteller AFT von demFIG. 2 shows the layered structure of the device for operating actuators A for electromagnetic valve control for a four-cylinder piston internal combustion engine of a motor vehicle. The cylinders of the piston internal combustion engine are designed using four-valve technology, with an actuator A being provided for each gas exchange valve GV. In this case, 6 actuators A are arranged in the actuator shafts AS of the actuator support AT 1. The actuator bracket AT is screwed to the cylinder head ZK of the piston internal combustion engine in a positive and non-positive manner. An actuator A forms a functional unit with a gas exchange valve GV. The gas exchange valves GV are installed in the cylinder head ZK of the piston internal combustion engine. The gas exchange valves GV are each drawn into the valve seat of the cylinder head ZK by a valve spring VF via a valve spring plate VFT attached to the valve stem VS of the gas exchange valve GV. In the rest position of a functional nellen unit consisting of a gas exchange valve GV and an actuator A, the actuator spring plate AFT and the valve spring plate VFT are pressed against each other, the armature plate AP being exactly in a central position between the opening magnet ÖM and the closing magnet SM. The valve spring VF causes the armature plate AP to return to this central position after the actuator spring plate AFT has moved away from it
Öffnermagneten ÖM zum Öffnen des Gaswechselventil GV angezogen wurde.Opening magnet ÖM was opened to open the gas exchange valve GV.
Die Aktorschächte AS, die zur Aufnahme der Aktoren A dienen, sind jeweils mit den Winkeln zur Bodenfläche des Aktorträgers ausgefräst, daß der Stößel der Aktoren A mit dem Ventilschaft VS der Gaswechselventile GV eine Gerade bildet. Jeder Aktor- schacht AS eines Aktorträgers AT weist eine Vorrichtung zum Fixieren der Aktoren A auf. Diese Vorrichtung kann beispielsweise als Bajonettverschluß ausgeführt sein.The actuator shafts AS, which serve to receive the actuators A, are each milled out with the angles to the bottom surface of the actuator carrier such that the tappet of the actuators A forms a straight line with the valve stem VS of the gas exchange valves GV. Each actuator shaft AS of an actuator carrier AT has a device for fixing the actuators A. This device can be designed, for example, as a bayonet lock.
Nach der Montage des Aktorträgers AT auf dem Zylinderkopf ZK der Kolbenbrennkraftmaschine werden die Aktorschächte AS mit den Aktoren A bestückt. Dabei stehen die Stecker SR der Aktoren A mit den Kontakten K aus dem Aktorträger AT hervor. Die Kontakte K sind mit der Erregerspule des Öffnermagneten ÖM und derAfter mounting the actuator bracket AT on the cylinder head ZK of the piston internal combustion engine, the actuator shafts AS are equipped with the actuators A. The connectors SR of the actuators A with the contacts K protrude from the actuator carrier AT. The contacts K are with the excitation coil of the opening magnet ÖM and
Erregerspule des Schließermagneten SM verbunden. Neben den Aktorschächten AS weist der Aktorträger AT Kühlwasserkanäle WK auf, die jeden Aktor A umgeben, und die über den Zylinderkopfes ZK mit dem Kühlwasserkreislauf der Brennkraftmaschine verbunden sind. Das in den Kühlwasserkanälen WK des Aktorträgers AT befindli- ehe Kühlwasser bildet einen Wassermantel, der erheblich zur Dämpfung der beimExcitation coil of the closer magnet SM connected. In addition to the actuator shafts AS, the actuator carrier AT has cooling water channels WK which surround each actuator A and which are connected to the cooling water circuit of the internal combustion engine via the cylinder head ZK. The cooling water located in the cooling water channels WK of the actuator bracket AT forms a water jacket which considerably reduces the damping of the
Betrieb der Aktoren A entstehenden Schallwellen beiträgt.Operation of the actuators A contributes sound waves.
Auf den Aktorträger AT mit den Aktoren A wird eine gekühlte Zwischenebene angebracht, die als Aluminiumplatte AE ausgeführt ist. Die Aluminiumplatte AE weist ebenfalls Kühlwasserkanäle WK auf, die horizontal in die Aluminiumplatte AE einge- arbeitet sind, und die mit den Kühlwasserkanälen WK des Aktorträgers AT verbunden sind. Gegebenenfalls sind die Kühlwasserkanäle WK des Aktorträgers AT und der Aluminiumplatte AE über seitlich herausgeführte Kühlwasserschläuche mit dem Kühlwasserkreislauf der Brennkraftmaschine verbunden. Die Aluminiumplatte AE weist Durchführungen für Stanzgitteranschlüsse eines Stanzgitters auf. Das Stanzgitter ist in einem multifunktionalen Kunststoffteil KT eingespritzt, das auf der Aluminiumplatte AE befestigt wird. Das Kunststoffteil KT übernimmt dabei die Isolierung des Stanzgitter SG, beispielsweise gegenüber der Aluminiumplatte AE.A cooled intermediate level, which is designed as an aluminum plate AE, is attached to the actuator support AT with the actuators A. The aluminum plate AE also has cooling water channels WK, which are horizontally worked into the aluminum plate AE and which are connected to the cooling water channels WK of the actuator bracket AT. If necessary, the cooling water channels WK of the actuator bracket AT and the aluminum plate AE are connected to the cooling water circuit of the internal combustion engine via cooling water hoses which are led out to the side. The aluminum plate AE has bushings for lead frame connections of a lead frame. The lead frame is injected into a multi-functional plastic part KT, which is attached to the aluminum plate AE. The plastic part KT takes over the insulation of the lead frame SG, for example from the Aluminum plate AE.
Die Durchführungen der Aluminiumplatte AE, in die das multifunktionale Kunststoffteil KT mit den Stanzgitteranschlüssen eingesetzt wird, sind als solide mechanische Steckplätze ausgebildet. Durch diese Steckplätze werden die Stecker SR der Akto- ren A mit den Kontakten K fixiert, und die Stanzgitteranschlüsse des Stanzgitters werden mit den Kontakten K der Stecker SR der Aktoren A zuverlässig elektrisch verbunden.The feedthroughs of the aluminum plate AE, into which the multifunctional plastic part KT with the lead frame connections is inserted, are designed as solid mechanical slots. Through these slots, the connectors SR of the actuators A are fixed with the contacts K, and the lead frame connections of the lead frame are reliably electrically connected to the contacts K of the connectors SR of the actuators A.
Auf dem multifunktionalen Kunststoffteil KT ist ein Aktorsteuergerät AG angebracht, daß alle für die Steuerung der Aktoren A notwendigen Funktionen übernimmt. Das Aktorsteuergerät AG ist mit der Stromversorgung des Kraftfahrzeuges sowie mitAn actuator control device AG is attached to the multifunctional plastic part KT, which takes over all functions necessary for the control of the actuators A. The actuator control unit AG is connected to the power supply of the motor vehicle as well
Motorsensoren verbunden.Motor sensors connected.
Die Motorsensoren ermöglichen dem Aktorsteuergerät AG die Bestimmung des Kurbelwellendrehwinkels und der Kurbelwellendrehzahl. Zudem kann das Aktorsteuergerät AG mit weiteren Sensoren verbunden sein, die beispielsweise den Lastzu- stand der Kolbenbrennkraftmaschine erkennen.The engine sensors enable the actuator control unit AG to determine the crankshaft rotation angle and the crankshaft speed. In addition, the actuator control unit AG can be connected to further sensors, which for example recognize the load state of the piston internal combustion engine.
Das Aktorsteuergerät AG ist durch die Kühlung der Aluminiumplatte AE vor einer übermäßigen Erwärmung aufgrund der hohen Wärmeentwicklung beim Betrieb der Aktoren A geschützt.The actuator control unit AG is protected against excessive heating due to the high heat development during the operation of the actuators A by the cooling of the aluminum plate AE.
Die Aluminiumplatte AE mit dem multifunktionalen Kunststoffteil KT und dem Aktor- Steuergerät AG ist von einer Abdeckung AD abgedeckt. Die Abdeckung AD ist ausThe aluminum plate AE with the multifunctional plastic part KT and the actuator control unit AG is covered by a cover AD. The cover AD is off
Kunststoff gefertigt und dient zugleich als Designträger des Herstellers der Kolbenbrennkraftmaschine oder Kraftfahrzeuges. Die Abdeckung AD verhindert das Eindringen von Feuchtigkeit in den Innenraum der Abdeckung. Seitlich an der Abdek- kung AD ist eine Steckvorrichtung SV vorgesehen, durch die das Aktorsteuergerät AG mit der Stromversorgung, weiteren Steuergeräten und weiteren Sensoren derManufactured plastic and also serves as a design carrier of the manufacturer of the piston internal combustion engine or motor vehicle. The cover AD prevents moisture from penetrating into the interior of the cover. A plug-in device SV is provided on the side of the cover AD, through which the actuator control unit AG with the power supply, further control units and further sensors of the
Kolbenbrennkraftmaschine verbunden ist.Piston engine is connected.
In der Figur 3 ist ein Schnitt durch die Vorrichtung zum Betrieb von Aktoren A zur elektromagnetischen Ventilsteuerung im montierten Zustand dargestellt. Die Figur zeigt primär den kompakten Aufbau der Vorrichtung. Im Fall eines Defektes wird zur Reparatur die Steckvorrichtung SV der AbdeckungFIG. 3 shows a section through the device for operating actuators A for electromagnetic valve control in the assembled state. The figure shows primarily the compact structure of the device. In the event of a defect, the plug device SV of the cover will be repaired
AD abgezogen. Danach kann die Abdeckung AD selbst demontiert werden. Das Aktorsteuergerät AG, das multifunktionale Kunststoffteil KT mit dem Stanzgitter und die Aluminiumplatte AE werden zusammen abmontiert. Von den nun freiliegenden Aktoren A kann der defekte Aktor aus dem Aktorschacht AS des Aktorträgers AT gehoben werden. Dies geschieht beispielsweise mit einem Spezialwerkzeug, mit dem durch eine Vierteldrehung der Bajonettverschluß gelöst wird. AD deducted. The cover AD can then be removed by yourself. The Actuator control unit AG, the multifunctional plastic part KT with the lead frame and the aluminum plate AE are removed together. From the now exposed actuators A, the defective actuator can be lifted out of the actuator shaft AS of the actuator support AT. This is done, for example, with a special tool that is used to release the bayonet lock by turning it a quarter turn.

Claims

Patentansprüche claims
1 . Vorrichtung zum Betrieb von Aktoren (A) zur elektromagnetischen Ventilsteuerung bei Brennkraftmaschinen, wobei die Aktoren (A) als diskrete Baugruppe ausgeführt sind und jeweils einen Stecker (SR) mit mehreren Kontakten (K) aufweisen, dadurch gekennzeichnet, daß die Aktoren (A) in einem Aktorträger (AT) in Aktorschächten (AS) angeordnet sind, daß auf dem Aktorträger (AT) ein Aktorsteuergerät (AG) angeordnet ist und daß das Aktorsteuergerät (AG) mit weiteren Steuergeräten, mit Motorsensoren sowie mit der Stromversorgung verbunden ist. 1 . Device for operating actuators (A) for electromagnetic valve control in internal combustion engines, the actuators (A) being designed as a discrete assembly and each having a plug (SR) with a plurality of contacts (K), characterized in that the actuators (A) in an actuator carrier (AT) are arranged in actuator shafts (AS), that an actuator control unit (AG) is arranged on the actuator carrier (AT) and that the actuator control unit (AG) is connected to further control units, to motor sensors and to the power supply.
2. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die Brennkraftmaschine einen Zylinderkopf (ZK) aufweist, und daß der Aktorträger (AT) als separates Bauteil auf dem Zylinderkopf (ZK) montiert ist.2. Device according to claim 1, characterized in that the internal combustion engine has a cylinder head (ZK), and that the actuator support (AT) is mounted as a separate component on the cylinder head (ZK).
3. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Aktorschächte (AS) im Aktorträger (AT) von Kühlmittelkanälen (WK) umgeben sind, die mit Kühlmittelkanälen () des Zylinderkopfes (ZK) bzw. mit einem Kühlmittelkreislauf der Brennkraftmaschine verbunden sind.3. Apparatus according to claim 1 or 2, characterized in that the actuator shafts (AS) in the actuator carrier (AT) are surrounded by coolant channels (WK) which are connected to coolant channels () of the cylinder head (ZK) or to a coolant circuit of the internal combustion engine .
4. Vorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die weiteren Steuergeräte in dem Aktorsteuergerät (AG) integriert sind.4. The device according to claim 1, characterized in that the further control devices are integrated in the actuator control device (AG).
5. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeich- net, daß der Aktorträger (AT) eine das Aktorsteuergerät (AG) umfassende Abdek- kung (AD) aufweist.5. Device according to one of the preceding claims, characterized in that the actuator support (AT) has a cover (AD) comprising the actuator control device (AG).
6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Abdeckung (AD) als Designträger dient.6. The device according to claim 5, characterized in that the cover (AD) serves as a design carrier.
7. Vorrichtung nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Abdek- kung (AD) aus Kunststoff gefertigt ist. 7. The device according to claim 5 or 6, characterized in that the cover (AD) is made of plastic.
8. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß zwischen den Aktoren (A) und dem Aktorsteuergerät (AG) ein in ein Kunststoffteil (KT) eingespritztes Stanzgitter mit Stanzgitteranschlüssen angeordnet ist, wobei die Stanzgitteranschlüsse des Stanzgitters mit den Kontakten (K) der Stecker (SR) der Aktoren (A) kontaktiert sind, und wobei das Stanzgitter mit dem Aktorsteuergerät (AG) kontaktiert ist.8. Device according to one of the preceding claims, characterized in that between the actuators (A) and the actuator control unit (AG) a lead frame injected into a plastic part (KT) with lead frame connections is arranged, the lead frame connections of the lead frame with the contacts (K) the plug (SR) of the actuators (A) are contacted, and the lead frame is contacted with the actuator control unit (AG).
9. Vorrichtung nach einem der vorangegangenen Ansprüche, dadurch gekennzeichnet, daß zwischen dem Aktorträger (AT) und dem Aktorsteuergerät (AG) eine gekühlte Zwischenebene (AE) angeordnet ist. 10Norrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die gekühlte Zwischenebene (AE) als Aluminiumplatte ausgeführt ist.9. Device according to one of the preceding claims, characterized in that a cooled intermediate level (AE) is arranged between the actuator carrier (AT) and the actuator control unit (AG). 10Device according to claim 9, characterized in that the cooled intermediate plane (AE) is designed as an aluminum plate.
1 1 .Vorrichtung nach Anspruch 9 oder 10, dadurch gekennzeichnet, daß die gekühlte Zwischenebene (AE) Durchführungen für die Stanzgitteranschlüsse des Stanzgitters aufweist. 1 2Norrichtung nach einem der Ansprüche 9 bis 1 1 , dadurch gekennzeichnet, daß die gekühlte Zwischenebene (AE) mit den Kühlmittelkanälen () des Zylinderkopfes (ZK) bzw. mit dem Kühlmittelkreislauf der Brennkraftmaschine verbunden ist. 1 1 .Device according to claim 9 or 10, characterized in that the cooled intermediate level (AE) has bushings for the lead frame connections of the lead frame. 1 2Device according to one of claims 9 to 1 1, characterized in that the cooled intermediate level (AE) is connected to the coolant channels () of the cylinder head (ZK) or to the coolant circuit of the internal combustion engine.
EP98965229A 1997-12-17 1998-12-03 Actuator operating device for electromagnetic valve actuation in internal combustion engines Expired - Lifetime EP0968357B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19756095 1997-12-17
DE19756095A DE19756095C2 (en) 1997-12-17 1997-12-17 Device for operating actuators for electromagnetic valve control in internal combustion engines
PCT/EP1998/007879 WO1999031359A1 (en) 1997-12-17 1998-12-03 Actuator operating device for electromagnetic valve actuation in internal combustion engines

Publications (2)

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EP0968357A1 true EP0968357A1 (en) 2000-01-05
EP0968357B1 EP0968357B1 (en) 2003-06-25

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EP98965229A Expired - Lifetime EP0968357B1 (en) 1997-12-17 1998-12-03 Actuator operating device for electromagnetic valve actuation in internal combustion engines

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US (1) US6164253A (en)
EP (1) EP0968357B1 (en)
JP (1) JP2001514721A (en)
DE (1) DE19756095C2 (en)
WO (1) WO1999031359A1 (en)

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US6164253A (en) 2000-12-26
WO1999031359A1 (en) 1999-06-24
JP2001514721A (en) 2001-09-11
DE19756095A1 (en) 1999-06-24
DE19756095C2 (en) 2001-11-22
EP0968357B1 (en) 2003-06-25

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