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DE102008019815A1 - Electric motor valve controller or actuator for controlling control element, particularly gas shuttle valve of internal-combustion engine, has linear motor and valve shaft, where valve shaft has axially running valve shaft channel - Google Patents

Electric motor valve controller or actuator for controlling control element, particularly gas shuttle valve of internal-combustion engine, has linear motor and valve shaft, where valve shaft has axially running valve shaft channel Download PDF

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Publication number
DE102008019815A1
DE102008019815A1 DE102008019815A DE102008019815A DE102008019815A1 DE 102008019815 A1 DE102008019815 A1 DE 102008019815A1 DE 102008019815 A DE102008019815 A DE 102008019815A DE 102008019815 A DE102008019815 A DE 102008019815A DE 102008019815 A1 DE102008019815 A1 DE 102008019815A1
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Germany
Prior art keywords
valve
valve shaft
valve stem
channel
linear motor
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Application number
DE102008019815A
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German (de)
Inventor
Ruediger Ufermann
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Individual
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Individual
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Priority to DE102008019815A priority Critical patent/DE102008019815A1/en
Publication of DE102008019815A1 publication Critical patent/DE102008019815A1/en
Withdrawn legal-status Critical Current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
    • F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
    • 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
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
    • 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
    • F01L2009/2105—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by solenoids comprising two or more coils
    • 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
    • F01L2009/2125—Shaft and armature construction
    • F01L2009/2126—Arrangements for amplifying the armature stroke
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/05—Related to pressure difference on both sides of a valve
    • 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
    • F01L3/12—Cooling of valves
    • F01L3/16—Cooling of valves by means of a fluid flowing through or along valve, e.g. air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Valve Device For Special Equipments (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The electric motor valve controller or actuator (1) has a linear motor and a valve shaft (4), where the valve shaft has an axially running valve shaft channel (12) with a piston channel (15) or a valve shaft cross hole. The valve shaft channel is discharged directly into a pressure chamber (5), so that a combustion chamber (10) and the pressure chamber stand in flow connection with the valve shaft.

Description

Die Erfindung betrifft einen Elektromotorischen Ventiltrieb (EMVT) mit Linearmotor nach der im Oberbegriff des Anspruches 1 angegebenen Art.The The invention relates to an electromotive valve train (EMVT) with Linear motor according to the specified in the preamble of claim 1 Art.

Ventilsteuerungen der zuvor genannten Art sind in unterschiedlichen Technologien und Ausführungsformen bekannt, wobei aber bisher keine Serienanwendungen bekannt sind.valve controls of the aforementioned type are in different technologies and embodiments known, but so far no series applications are known.

Der im Stand der Technik beschriebene Feder-Masse-Schwinger (Schwingankerprinzip) ist zwar hinsichtlich der Öffnungs- und Schließzeiten eines Ventils vollvariabel, nicht aber hinsichtlich deren Hübe. Diese Nachteile entfallen mit einem Linearmotor als Aktuator, der eine vollvariable Ventilsteuerung der Öffnungs- und Schließzeiten als auch des Ventilhubs zulässt. Beide Systeme sind bisher steuerungsmäßig noch schwer zu beherrschen. Weiter müssen die Systeme bisher sehr großbauend ausgeführt werden, da extrem hohe Ventilöffnungskräfte zu überwinden sind.Of the Spring-mass oscillator (oscillating armature principle) described in the prior art Although, with regard to the opening and closing times a valve fully variable, but not in terms of their strokes. These Disadvantages omitted with a linear motor as an actuator, the one fully variable valve control of the opening and closing times as well as the valve lift allows. Both systems are still difficult to control in terms of control. Next must the Systems so far very large-scale accomplished be overcome because of extremely high valve opening forces are.

Der Erfindung liegt daher die Aufgabe zugrunde eine Ventilsteuerung vorzuschlagen, die die zuvor genannten Nachteile nicht aufweist und insbesondere auch eine bessere Energiebilanz beinhaltet. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass in einer ersten Ausführungsform der Ventilschaft eines Gaswechselventils in seinem distalen Abschnitt eine axiale Durchbohrung aufweist, die einen Druckausgleich vom Brennraum des Zylinders zu einem vor einem Linearmotor platzierten und damit in Strömungsverbindung stehendem Druckraum aufweist, wobei der Kolben der im Zylinder des Druckraumes läuft, kraft- oder formschlüssig mit dem Ventilschaft verbunden ist, so dass durch den nun geschaffenen Druckausgleich P je – nach motorischen Gegebenheiten – immer gleich P' ist, so dass der Linearmotor, dessen Läufer ebenfalls kraft- oder formschlüssig mit dem Ventilschaft verbunden ist, nur noch die relativ geringen dynamischen Kräfte der Druckfeder zur Ventilsteuerung überwinden muss. So reduzieren sich gegenüber den ansonsten zur Ansteuerung der Gaswechselventile von EMTV erforderlichen extrem hohen Kraft- und Energiedichten wesentlich, was zu einer insgesamt besseren Energiebilanz führt.Of the Invention is therefore the object of a valve control to propose that does not have the aforementioned disadvantages and in particular also includes a better energy balance. These Task is inventively characterized solved, that in a first embodiment the valve stem of a gas exchange valve in its distal portion has an axial through hole, which is a pressure equalization of Combustion chamber of the cylinder placed in front of a linear motor and in fluid communication with it has standing pressure chamber, wherein the piston in the cylinder of the pressure chamber running, positive or positive connected to the valve stem, so that created by the now Pressure equalization P depending - after motor conditions - always is equal to P ', so that the linear motor, whose runner also non-positive or positive connected to the valve stem, only the relatively small dynamic forces the compression spring for valve control must overcome. So reduce opposite otherwise required to control the gas exchange valves of EMTV extremely high power and energy densities significantly, resulting in a overall better energy balance leads.

Vorteilhafte Weiterbildungen der Erfindung sind durch die nach der im Oberbegriff des Anspruches 1 angegebenen Art von diesem Anspruch abhängigen Ansprüche gekennzeichnet.advantageous Further developments of the invention are by the in the preamble Of the claim 1 specified type dependent on this claim claims.

In folgendem wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels in Verbindung mit drei Zeichnungen beschrieben. Dabei zeigt:In The following is the invention with reference to a preferred embodiment described in conjunction with three drawings. Showing:

1 einen vereinfachten Längsschnitt der Ventilsteuerung (1). 1 a simplified longitudinal section of the valve control ( 1 ).

Linearmotoren haben zur Steuerung von Gaswechselventilen gegenüber EMTV nach dem Feder-Masse-Prinzip (Schwingankerprinzip) viele Vorteile:
Variabler Ventilhub, aktives Abbremsen des Ventils, einfachere Steuerung der Auftreffgeschwindigkeit, allg. Steuerbarkeit wie Geschwindigkeit und Position des Ventils über den gesamten Ventilweg, aktives Abbremsen des Ventils, adaptives Einstellen der Ventilkraft und ein kleiner konstanter Luftspalt über den gesamten Arbeitsbereich.Linear motors have many advantages for the control of gas exchange valves compared to EMTV according to the spring-mass principle (oscillating armature principle):
Variable valve lift, active valve deceleration, easier control of impact velocity, general controllability such as speed and position of the valve over the entire valve travel, active valve deceleration, adaptive valve force adjustment and a small constant air gap over the entire working range.

Bisher waren zur Ansteuerung von Gaswechselventilen, insbesondere durch den Gasgegendruck, sehr hohe Kraft- und Energiedichten erforderlich. Die Entwicklung zeigt einen Weg auf, dass die Kraft- und Energiedichten erheblich dadurch reduziert werden können, dass der Ventilschaft (4) der mit dem Läufer (2) des Linearmotors (20) kraft- oder formschlüssig verbunden ist, den axial verlaufenden Ventilschaftkanal (12) mit dem Kolbenkanal (15) oder der Ventilschaftquerbohrung (18) aufweist, wodurch der Brennraum (10) des Zylinders (9) mit dem Druckraum (5) des Druckraumzylinders (14) so in Strömungsverbindung steht, dass der Druck P im Brennraum des (10) bei allen motorischen Gegebenheiten immer gleich dem Druck P' im Druckraum (5) ist, so dass der Linearmotor (20) lediglich die dynamischen Kräfte der Druckfeder (7) überwinden muss, die sich gegen das Widerlager (17), welches kraft- oder formschlüssig mit dem Ventilschaft (4) verbunden, abstützt. Dies führt zu wesentlichen Verbesserungen in der allgemeinen Beherrschung der Steuerbarkeit der Gaswechselventile, bei einer spürbar besseren Energiebilanz. Anstatt des Ventilschaftkanal s (12) kann auch eine direkte externe Druckleitung vom Zylinder (9) zum Druckraum (5) als Strömungsverbindung eingesetzt werden, um evtl. thermische Probleme besser zu beherrschen. Die Entwicklung kann auch unmittelbar auf EMVT nach dem Schwingankerprinzip und leicht modifiziert auf klassische Nockenwellentriebe übertragen werden.So far, very high power and energy densities were required to control gas exchange valves, in particular by the gas back pressure. The development shows a way that the power and energy densities can be significantly reduced by the fact that the valve stem ( 4 ) with the runner ( 2 ) of the linear motor ( 20 ) is positively or positively connected, the axially extending valve stem channel ( 12 ) with the piston channel ( 15 ) or the valve stem transverse bore ( 18 ), whereby the combustion chamber ( 10 ) of the cylinder ( 9 ) with the pressure chamber ( 5 ) of the pressure chamber cylinder ( 14 ) is in flow communication such that the pressure P in the combustion chamber of the ( 10 ) in all motor conditions always equal to the pressure P 'in the pressure chamber ( 5 ), so that the linear motor ( 20 ) only the dynamic forces of the compression spring ( 7 ), which is against the abutment ( 17 ), which positively or positively with the valve stem ( 4 ), supported. This leads to significant improvements in the overall control of the controllability of the gas exchange valves, with a noticeably better energy balance. Instead of the valve stem channel s ( 12 ) can also be a direct external pressure line from the cylinder ( 9 ) to the pressure room ( 5 ) can be used as a flow connection to better control any thermal problems. The development can also be transferred directly to EMVT according to the oscillating armature principle and slightly modified to classic camshaft drives.

2 Modifikation bei der sich die Druckfeder (7) im Druckraumzylinder (14) gegen die Unterseite des Kolbens (6) abstützt. 2 Modification in which the compression spring ( 7 ) in the pressure cylinder ( 14 ) against the underside of the piston ( 6 ) is supported.

3 eine Modifikation bei der sich der Druckraumzylinder (14), dem Kolben (6) und dem Druckraum (5) oberhalb des Linearmotors (20) angeordnet ist und durch einen axial durchgehend geführten Ventilschaftkanal (12) mit dem Brennraum (10) in Strömungsverbindung steht. 3 a modification in which the pressure cylinder ( 14 ), the piston ( 6 ) and the pressure chamber ( 5 ) above the linear motor ( 20 ) is arranged and by an axially continuous valve stem channel ( 12 ) with the combustion chamber ( 10 ) is in flow communication.

11
Ventilsteuerungvalve control
22
Läuferrunner
33
Statorstator
44
Ventilschaftvalve stem
55
Druckraumpressure chamber
66
Kolbenpiston
77
Druckfedercompression spring
88th
Ventiltellervalve disc
99
Zylindercylinder
1010
Brennraumcombustion chamber
1111
DruckraumkolbenPressure chamber piston
1212
VentilschaftkanalValve stem channel
1313
Belüftungsöffnungventilation opening
1414
DruckraumzylinderPressure chamber cylinder
1515
Kolbenkanalplunger passage
1616
DruckraumzylinderbuchsePressure chamber cylinder liner
1717
Widerlagerabutment
1818
VentilschaftquerbohrungValve stem cross hole
2020
Linearmotorlinear motor

Claims (3)

Ventilsteuerung bzw. Aktuator zur Steuerung eines Stellgliedes, insbesondere eines Gaswechselventils von Brennkraftmaschinen mit Linearmotor, dadurch gekennzeichnet, dass der Ventilschaft (4) den axial verlaufenden Ventilschaftkanal (12) mit dem Kolbenkanal (15) oder der Ventilschaftquerbohrung (18) aufweist, wobei diese oder nach 3 der Ventilschaftkanal (12) direkt in den Druckraum (5) einmündet, so dass der Brennraum (10) und der Druckraum (5) in Strömungsverbindung stehen und der kraft- oder formschlüssig mit dem Ventilschaft (4) verbundene Kolben (6) im Druckraumzylinder (14) läuft und der Ventilschaft (4) die Druckraumzylinderbuchse (16) hermetisch dicht durchläuft, wobei sich die Druckfeder (7) gegen das Widerlager (17) oder nach 2 im Druckraumzylinder (14) gegen die Unterseite des Kolbens (6) abstützt und der Ventilschaft (4) in seinem oberen Abschnitt den kraft- oder formschlüssig damit verbundenen Läufer (2) aufweist, der im Stator (3) des Linearmotors (20) läuft, wobei der Ventilschaftkanal (12), der Kolbenkanal (15) bzw. die Ventilschaftquerbohrung (15) auch entfallen kann und durch eine äußere Strömungsverbindung zwischen dem Brennraum (10) und dem Druckraum (5) ersetzt werden kann und der Druckraumzylinder (14) und der Linearmotor (20) in die Luft- und/oder Ölkühlung der Brennkraftmaschine einbezogen sind.Valve control or actuator for controlling an actuator, in particular a gas exchange valve of internal combustion engines with a linear motor, characterized in that the valve stem ( 4 ) the axially extending valve stem channel ( 12 ) with the piston channel ( 15 ) or the valve stem transverse bore ( 18 ), this or after 3 the valve stem channel ( 12 ) directly into the pressure chamber ( 5 ), so that the combustion chamber ( 10 ) and the pressure chamber ( 5 ) are in flow communication and the positive or positive fit with the valve stem ( 4 ) connected pistons ( 6 ) in the pressure cylinder ( 14 ) and the valve stem ( 4 ) the pressure cylinder cylinder bushing ( 16 ) passes hermetically sealed, wherein the compression spring ( 7 ) against the abutment ( 17 ) or after 2 in the pressure cylinder ( 14 ) against the underside of the piston ( 6 ) and the valve stem ( 4 ) in its upper portion of the force or positively associated runner ( 2 ), which in the stator ( 3 ) of the linear motor ( 20 ), wherein the valve stem channel ( 12 ), the piston channel ( 15 ) or the valve stem transverse bore ( 15 ) can also be omitted and by an external flow connection between the combustion chamber ( 10 ) and the pressure chamber ( 5 ) and the pressure cylinder ( 14 ) and the linear motor ( 20 ) are included in the air and / or oil cooling of the internal combustion engine. Ventilsteuerung nach Anspruch 1, dadurch gekennzeichnet, dass der Kolben (6) denselben Durchmesser wie der Ventilteller (8) hat bzw. auch kleiner oder größer sein kann.Valve controller according to claim 1, characterized in that the piston ( 6 ) the same diameter as the valve plate ( 8th ) or may be smaller or larger. Ventilsteuerung nach Anspruch 1 und 2, dadurch gekennzeichnet, dass der Linearmotor (20) durch einen EMVT nach dem Feder-Masse-Schwinger Prinzip oder durch einen Nockenwellentrieb ersetzt wir.Valve control according to claim 1 and 2, characterized in that the linear motor ( 20 ) by an EMVT according to the spring-mass-oscillator principle or by a camshaft drive we replaced.
DE102008019815A 2008-04-19 2008-04-19 Electric motor valve controller or actuator for controlling control element, particularly gas shuttle valve of internal-combustion engine, has linear motor and valve shaft, where valve shaft has axially running valve shaft channel Withdrawn DE102008019815A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102008019815A DE102008019815A1 (en) 2008-04-19 2008-04-19 Electric motor valve controller or actuator for controlling control element, particularly gas shuttle valve of internal-combustion engine, has linear motor and valve shaft, where valve shaft has axially running valve shaft channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008019815A DE102008019815A1 (en) 2008-04-19 2008-04-19 Electric motor valve controller or actuator for controlling control element, particularly gas shuttle valve of internal-combustion engine, has linear motor and valve shaft, where valve shaft has axially running valve shaft channel

Publications (1)

Publication Number Publication Date
DE102008019815A1 true DE102008019815A1 (en) 2009-10-22

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DE102008019815A Withdrawn DE102008019815A1 (en) 2008-04-19 2008-04-19 Electric motor valve controller or actuator for controlling control element, particularly gas shuttle valve of internal-combustion engine, has linear motor and valve shaft, where valve shaft has axially running valve shaft channel

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014114552A1 (en) * 2013-01-22 2014-07-31 Lsp Innovative Automotive Systems Gmbh Variable electrohydraulic valve controller
FR3001762A1 (en) * 2013-02-07 2014-08-08 Andre Chaneac Thermal engine, has cylinder heads, and electromagnets fixed in cavities that are closed by waterproof caps formed integral with inlet valves, where caps stay in communication with ducts of intake valves through channels

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014114552A1 (en) * 2013-01-22 2014-07-31 Lsp Innovative Automotive Systems Gmbh Variable electrohydraulic valve controller
FR3001762A1 (en) * 2013-02-07 2014-08-08 Andre Chaneac Thermal engine, has cylinder heads, and electromagnets fixed in cavities that are closed by waterproof caps formed integral with inlet valves, where caps stay in communication with ducts of intake valves through channels

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