DE102010016037A1 - Switchover valve, particularly for controlling hydraulic fluid flow of internal combustion engine, has ballpoint mechanism, which is engaged by applying actuating impulse to actuating unit of ballpoint mechanism - Google Patents
Switchover valve, particularly for controlling hydraulic fluid flow of internal combustion engine, has ballpoint mechanism, which is engaged by applying actuating impulse to actuating unit of ballpoint mechanism Download PDFInfo
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- DE102010016037A1 DE102010016037A1 DE102010016037A DE102010016037A DE102010016037A1 DE 102010016037 A1 DE102010016037 A1 DE 102010016037A1 DE 102010016037 A DE102010016037 A DE 102010016037A DE 102010016037 A DE102010016037 A DE 102010016037A DE 102010016037 A1 DE102010016037 A1 DE 102010016037A1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
- F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/524—Mechanical actuating means with crank, eccentric, or cam with a cam
- F16K31/52475—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a sliding valve
- F16K31/52483—Mechanical actuating means with crank, eccentric, or cam with a cam comprising a sliding valve comprising a multiple-way sliding valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/52—Mechanical actuating means with crank, eccentric, or cam
- F16K31/528—Mechanical actuating means with crank, eccentric, or cam with pin and slot
- F16K31/5286—Mechanical actuating means with crank, eccentric, or cam with pin and slot comprising a sliding valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/56—Mechanical actuating means without stable intermediate position, e.g. with snap action
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/10—Bearings, parts of which are eccentrically adjustable with respect to each other
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/06—Adjustable connecting-rods
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Multiple-Way Valves (AREA)
- Mechanically-Actuated Valves (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Sliding Valves (AREA)
- Fluid-Driven Valves (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die vorliegende Erfindung bezieht sich auf ein Umschaltventil, insbesondere zum Steuern eines Hydraulikflüssigkeitsstroms, und auf einen Verbrennungsmotor mit einem derartigen Umschaltventil.The present invention relates to a switching valve, in particular for controlling a hydraulic fluid flow, and to an internal combustion engine with such a switching valve.
Obwohl auf beliebige Fahrzeuge anwendbar, wird die vorliegende Erfindung sowie die ihr zugrunde liegende Problematik in Bezug auf ein Personenkraftfahrzeug näher erläutert.Although applicable to any vehicle, the present invention and its underlying problem is explained in more detail with respect to a passenger car.
Bei Verbrennungsmotoren wirkt sich ein hohes Verdichtungsverhältnis positiv auf den Wirkungsgrad des Verbrennungsmotors aus. Unter Verdichtungsverhältnis wird im Allgemeinen das Verhältnis des gesamten Zylinderraumes vor der Verdichtung zum verbliebenen Zylinderraum nach der Verdichtung verstanden. Bei Verbrennungsmotoren mit Fremdzündung, insbesondere Ottomotoren, die ein festes Verdichtungsverhältnis aufweisen, darf das Verdichtungsverhältnis jedoch nur so hoch gewählt werden, dass bei Volllastbetrieb ein so genanntes ”Klopfen” des Verbrennungsmotors vermieden wird. Jedoch könnte für den weitaus häufiger auftretenden Teillastbereich des Verbrennungsmotors, also bei geringer Zylinderfüllung, das Verdichtungsverhältnis mit höheren Werten gewählt werden, ohne dass ein ”Klopfen” auftreten würde. Der wichtige Teillastbereich eines Verbrennungsmotors kann verbessert werden, wenn das Verdichtungsverhältnis variabel einstellbar ist. Zur Verstellung des Verdichtungsverhältnisses sind verschiedene Systeme beschrieben.In internal combustion engines, a high compression ratio has a positive effect on the efficiency of the internal combustion engine. Under compression ratio is generally understood the ratio of the entire cylinder space before compression to the remaining cylinder space after compression. In internal combustion engines with spark ignition, in particular gasoline engines, which have a fixed compression ratio, the compression ratio, however, may only be selected so high that so-called "knocking" of the internal combustion engine is avoided during full-load operation. However, for the much more frequently occurring partial load range of the internal combustion engine, ie with low cylinder filling, the compression ratio with higher values could be selected without "knocking" occurring. The important part load range of an internal combustion engine can be improved if the compression ratio is variably adjustable. Various systems are described for adjusting the compression ratio.
Die
Somit liegt der vorliegenden Erfindung die Aufgabe zugrunde, ein verbessertes Umschaltventil zu schaffen, welches die oben genannten Nachteile beseitigt.Thus, the present invention has for its object to provide an improved changeover valve, which eliminates the disadvantages mentioned above.
Diese Aufgabe wird erfindungsgemäß durch ein Umschaltventil mit den Merkmalen des Patentanspruchs 1 und/oder durch einen Verbrennungsmotor mit den Merkmalen des Patentanspruchs 13 gelöst.This object is achieved by a switching valve with the features of
Demgemäß sind vorgesehen:
Ein Umschaltventil, insbesondere zum Steuern eines Hydraulikflüssigkeitsstroms, mit einer Kugelschreibermechanik, welche durch Aufbringen eines Betätigungsimpulses auf ein Betätigungsmittel der Kugelschreibermechanik wechselweise in einer ersten oder in einer zweiten Raststellung einrastbar und derart mit dem Umschaltventil gekoppelt ist, dass die erste oder die zweite Raststellung einer jeweiligen ersten oder zweiten Schaltstellung eines Steuerkolbens des Umschaltventils entspricht.Accordingly, it is provided:
A switching valve, in particular for controlling a hydraulic fluid flow, with a ballpoint pen mechanism, which is engageable by applying an actuating pulse to an actuating means of the ballpoint pen mechanism alternately in a first or in a second detent position and coupled to the switching valve, that the first or the second detent position of a respective first or second switching position of a control piston of the switching valve corresponds.
Ein Verbrennungsmotor, welcher ein einstellbares Verdichtungsverhältnis aufweist, mit: einem derartigen Umschaltventil; und einer Pleuelstangenanordnung mit einer in einem Pleuellagerauge und/oder einem Hublagerauge angeordneten hydraulisch verstellbaren Exzentereinrichtung zur Verstellung einer effektiven Pleuelstangenlänge, wobei ein Verstellweg der Exzentereinrichtung mittels des Umschaltventils steuerbar ist.An internal combustion engine having an adjustable compression ratio, comprising: such a switching valve; and a connecting rod assembly with a arranged in a connecting rod eye and / or a Hublagerauge hydraulically adjustable eccentric means for adjusting an effective connecting rod length, wherein an adjustment of the eccentric means of the switching valve is controllable.
Die Grundidee der vorliegenden Erfindung besteht darin, ein Umschaltventil vorzusehen, welches mit einer Kugelschreibermechanik versehen ist, die durch Aufbringen eines Betätigungsimpulses das Umschaltventil wechselweise von einer ersten in eine zweite Schaltstellung und umgekehrt schaltet.The basic idea of the present invention is to provide a change-over valve which is provided with a ball-point pen mechanism which switches the change-over valve alternately from a first to a second switching position and vice versa by applying an actuating pulse.
In den Unteransprüchen finden sich vorteilhafte Ausgestaltungen und Verbesserungen des im Patentanspruch 1 angegebenen Umschaltventils bzw. des im Patentanspruch 13 angegebenen Verbrennungsmotors.In the dependent claims are advantageous refinements and improvements of the specified in
Gemäß einer bevorzugten Weiterbildung ist zum Schalten des Umschaltventils von der ersten Schaltstellung in die zweite Schaltstellung durch Aufbringen des Betätigungsimpulses auf das Betätigungsmittel der Kugelschreibermechanik der Steuerkolben des Umschaltventils in etwa entgegen einer Richtung des Betätigungsimpulses um einen vorbestimmten Weg verlagerbar. Dies ermöglicht vorteilhaft ein einfaches Umschalten des Umschaltventils von der ersten Schaltstellung in die zweite Schaltstellung.According to a preferred development is for switching the switching valve from the first switching position to the second switching position by applying the actuating pulse to the actuating means of the ballpoint pen mechanism of the control piston of the switching valve in a direction opposite to a direction of the actuating pulse displaced by a predetermined distance. This advantageously allows a simple switching of the switching valve from the first switching position to the second switching position.
Gemäß einem weiteren bevorzugten Ausführungsbeispiel ist zum Schalten des Umschaltventils von der zweiten Schaltstellung in die erste Schaltstellung durch Aufbringen des Betätigungsimpulses auf das Betätigungsmittel der Kugelschreibermechanik der Steuerkolben des Umschaltventils in etwa in der Richtung des Betätigungsimpulses um den vorbestimmten Weg verlagerbar. Dies ermöglicht vorteilhaft ein einfaches Umschalten des Umschaltventils von der zweiten Schaltstellung in die erste Schaltstellung. According to a further preferred embodiment, for switching the switching valve from the second switching position to the first switching position by applying the actuating pulse to the actuating means of the ballpoint pen mechanism of the control piston of the switching valve in approximately the direction of the actuating pulse by the predetermined distance displaced. This advantageously allows a simple switching of the switching valve from the second switching position to the first switching position.
Gemäß einer weiteren bevorzugten Weiterbildung ist die Kugelschreibermechanik nach Art einer SecuritTM-Mechanik ausgebildet, insbesondere mit: einer Steuerhülse zur axialen Führung des Betätigungsmittels und einer Verdrehhülse; und einer Federeinrichtung, welche den Steuerkolben, die Verdrehhülse und das Betätigungsmittel gegen den Betätigungsimpuls axial federvorverspannt, wobei die Verdrehhülse mit der Steuerhülse und dem Betätigungsmittel derart in Wirkverbindung steht, dass bei dem Aufbringen des Betätigungsimpulses auf das Betätigungsmittel dieses bezüglich der Steuerhülse mitsamt der Verdrehhülse derart axial verlagerbar ist, dass die Verdrehhülse wechselweise von der ersten in die zweite Raststellung bringbar ist. Hierdurch ist bei einer Betätigung des Umschaltventils aus nur einer Betätigungsrichtung dieses zuverlässig in die beiden Schaltstellungen bringbar, wodurch sich die Anwendung des Umschaltventils vereinfacht.According to a further preferred development, the ballpoint pen mechanism is designed in the manner of a Securit ™ mechanism, in particular with: a control sleeve for the axial guidance of the actuating means and a torsion sleeve; and a spring device which axially prestresses the control piston, the rotary sleeve and the actuating means against the actuating pulse, wherein the rotary sleeve is in operative connection with the control sleeve and the actuating means such that when the actuating pulse is applied to the actuating means, this with respect to the control sleeve together with the rotary sleeve is axially displaceable, that the turning sleeve can be brought alternately from the first to the second detent position. In this way, upon actuation of the reversing valve from only one actuating direction, this can be brought reliably into the two switching positions, which simplifies the use of the reversing valve.
Gemäß einer weiteren bevorzugten Ausführungsform ist das Umschaltventil gekennzeichnet durch eine Steuerhülse, welche auf einer Innenwand angeordnete bezüglich einer Längsrichtung der Steuerhülse axial verlaufende Steuerhülsenrippen, einer Stirnseite der Steuerhülse zugeordnete schräge Steuerhülsenrippen-Stirnflächen und zwischen jeweils zwei benachbarten Steuerhülsenrippen angeordnete Steuerhülsennuten aufweist, welche bezüglich der Längsrichtung der Steuerhülse abwechselnd verschiedene Steuerhülsennuten-Tiefen aufweisen; eine zumindest abschnittsweise in der Steuerhülse angeordnete Verdrehhülse, welche zu den Steuerhülsennuten komplementäre Verdrehhülsenrippen und den schrägen Steuerhülsenrippen-Stirnflächen zugewandte schräge Verdrehhülsenrippen-Stirnflächen aufweist; den Steuerkolben, welcher in Wirkkontakt mit einer Stirnfläche der Verdrehhülse steht; das Betätigungsmittel, welches mittels Betätigungsmittelrippen in den Steuerhülsennuten führbar ist und eine gezahnte Ringfläche aufweist, welche in Wirkkontakt mit den Verdrehhülsenrippen-Stirnflächen steht; und eine Federeinrichtung, welche den Steuerkolben, die Verdrehhülse und das Betätigungsmittel gegen den Betätigungsimpuls federvorverspannt. Hierdurch ist eine einfache Herstellbarkeit des Umschaltventils gewährleistet.According to a further preferred embodiment, the changeover valve is characterized by a control sleeve, which arranged on an inner wall with respect to a longitudinal direction of the control sleeve axially extending control sleeve ribs, an end face of the control sleeve associated oblique control sleeve rib end faces and between each two adjacent control sleeve ribs arranged Steuerhülsennuten, which with respect to the longitudinal direction the control sleeve alternately have different control sleeve groove depths; an at least partially arranged in the control sleeve rotational sleeve having complementary to the control sleeve grooves Verdrehhülsenrippen and the oblique control sleeve rib end faces facing oblique Verdrehhülsenrippen-end faces; the control piston, which is in operative contact with an end face of the torque tube; the actuating means, which is feasible by means of actuating means ribs in the Steuerhülsennuten and having a toothed annular surface, which is in operative contact with the Verdrehhülsenrippen-end faces; and spring means biasing the control piston, the torque tube, and the actuating means against the actuating pulse. This ensures easy manufacturability of the switching valve.
Gemäß einer weiteren bevorzugten Weiterbildung ist bei einem Aufbringen des Betätigungsimpulses auf das Betätigungsmittel dieses mit der Verdrehhülse in die Steuerhülse hinein gegen eine Federkraft der Federeinrichtung derart verlagerbar, dass die Verdrehhülsenrippen außer Eingriff mit den zugeordneten Steuerhülsennuten mit einer ersten Steuerhülsennuten-Tiefe gelangen, wobei die verzahnte Ringfläche und die Verdrehhülsenrippen-Stirnflächen derart in Wirkkontakt stehen, dass die Verdrehhülse eine erste Rotationsbewegung vollzieht, wobei die Steuerhülsenrippen-Stirnflächen und die Verdrehhülsenrippen-Stirnflächen derart aufeinander abgleiten, dass die Verdrehhülse eine zweite Rotationsbewegung vollzieht, wobei die Verdrehhülsenrippen in Steuerhülsennuten mit einer zweiten Steuerhülsennuten-Tiefe eingreifen, wobei die Verdrehhülse in einer der Raststellungen einrastet, und wobei der Steuerkolben aufgrund der Wirkverbindung mit der Verdrehhülse in eine der Schaltstellungen verbringbar ist. Dies ermöglicht ein zuverlässiges und sicheres Umschalten von der ersten in die zweite Schaltstellung und umgekehrt, wodurch sich die Zuverlässigkeit des Umschaltventils erhöht.According to a further preferred development, when the actuating pulse is applied to the actuating means, the latter is displaceable with the torsion sleeve into the control sleeve against a spring force of the spring device in such a way that the torsion sleeve ribs disengage from the associated control sleeve grooves with a first depth of the control sleeve groove, wherein the toothed Ring face and the Verdrehhülsenrippen-end faces are in operative contact, that the Verdrehhülse performs a first rotational movement, the Steuerhülsenrippen end faces and Verdrehhülsenrippen-end surfaces slide on each other such that the Verdrehhülse performs a second rotational movement, the Verdrehhülsenrippen in Steuerhülsennuten with a second Steuerhülsennuten Engage depth, the rotational sleeve engages in one of the locking positions, and wherein the control piston due to the operative connection with the rotary sleeve in one of the Schaltst is achievable. This allows a reliable and safe switching from the first to the second switching position and vice versa, whereby the reliability of the switching valve increases.
Gemäß einem weiteren bevorzugten Ausführungsbeispiel entspricht eine Anzahl der Verdrehhülsenrippen der Hälfte einer Anzahl der Steuerhülsennuten. Hierdurch wird zuverlässig gewährleistet, dass die Verdrehhülse in der Steuerhülse geführt ist.According to a further preferred embodiment, a number of Verdrehhülsenrippen the half of a number of Steuerhülsennuten. This reliably ensures that the torsion sleeve is guided in the control sleeve.
Gemäß einer weiteren bevorzugten Weiterbildung ist die Kugelschreibermechanik nach Art einer Kugel-Mechanik ausgebildet, insbesondere mit: einer Steuerhülse zur axialen Führung des Betätigungsmittels; einer Kugel, welche verschieblich in einer Radialnut der Steuerhülse angeordnet ist; und einer Federeinrichtung, welche den Steuerkolben und das Betätigungsmittel gegen den Betätigungsimpuls axial federvorverspannt, wobei die Kugel mit einer in dem Betätigungsmittel vorgesehenen Nut derart in Wirkverbindung steht, dass bei dem Aufbringen des Betätigungsimpulses auf das Betätigungsmittel dieses bezüglich der Steuerhülse derart axial verlagerbar ist, dass das Betätigungsmittel aufgrund der Wirkverbindung mit der Kugel wechselweise von der ersten in die zweite Raststellung bringbar ist. Dies ermöglicht eine besonders einfache Herstellbarkeit des Umschaltventils.According to a further preferred development, the ballpoint pen mechanism is designed in the manner of a ball mechanism, in particular with: a control sleeve for the axial guidance of the actuating means; a ball which is slidably disposed in a radial groove of the control sleeve; and a spring device which axially prestresses the control piston and the actuating means against the actuating pulse, wherein the ball is in operative connection with a groove provided in the actuating means such that when the actuating pulse is applied to the actuating means, it is axially displaceable with respect to the control sleeve the actuating means due to the operative connection with the ball can be brought alternately from the first to the second detent position. This allows a particularly easy manufacturability of the switching valve.
Gemäß einer weiteren bevorzugten Ausführungsform ist die Nut als herzförmige Nut ausgebildet. Dies ermöglicht eine zuverlässige Führung der Kugel in die beiden Raststellungen der Kugelschreibermechanik.According to a further preferred embodiment, the groove is formed as a heart-shaped groove. This allows a reliable guidance of the ball in the two detent positions of the ballpoint pen mechanism.
Gemäß einer weiteren bevorzugten Weiterbildung ist die Steuerhülse als Ventilbohrung ausgebildet, insbesondere als Ventilbohrung in einem Ventilblock mit jeweiligen Fluidnuten des Steuerkolbens zugeordneten die Ventilbohrung durchbrechenden Fluidleitungen. Hierdurch wird der Einsatzbereich des Umschaltventils vorteilhaft erweitert. According to a further preferred development, the control sleeve is designed as a valve bore, in particular as a valve bore in a valve block with respective fluid grooves of the control piston associated with the valve bore through the fluid lines. As a result, the range of application of the changeover valve is advantageously extended.
Gemäß einer bevorzugten Ausführungsform ist der Betätigungsimpuls durch einen Fluiddruck aufbringbar, wodurch die Bedienung des Umschaltventils vereinfacht wird und dessen Einsatzbereich erweitert wird.According to a preferred embodiment, the actuating pulse can be applied by a fluid pressure, whereby the operation of the switching valve is simplified and its application area is expanded.
Gemäß einer bevorzugten Weiterbildung ist die Federeinrichtung derart ausgebildet, dass ein Betätigen des Umschaltventils erst bei einem Betätigungsimpuls oberhalb eines vorbestimmten Schwellwertes erfolgt. Dies verhindert zuverlässig ein ungewolltes Schalten des Umschaltventils, wodurch dessen Zuverlässigkeit erhöht wird.According to a preferred embodiment, the spring device is designed such that an actuation of the changeover valve takes place only at an actuation pulse above a predetermined threshold value. This reliably prevents accidental switching of the switching valve, thereby increasing its reliability.
Gemäß einer weiteren bevorzugten Weiterbildung ist das Umschaltventil in die Pleuelstangenanordnung, insbesondere in einen Bereich des Hublagerauges, integriert, wodurch das Umschaltventil nur geringen Bauraum einnimmt. Hierdurch wird der Einsatzbereich des Umschaltventils vorteilhaft erweitert.According to a further preferred development, the changeover valve is integrated in the connecting rod arrangement, in particular in a region of the lifting bearing eye, whereby the changeover valve takes up only small installation space. As a result, the range of application of the changeover valve is advantageously extended.
Gemäß einer bevorzugten Ausführungsform ist der Betätigungsimpuls durch einen Motoröldruck aufbringbar, wobei der Verbrennungsmotor Mittel, beispielsweise eine regelbare Ölpumpe oder einen Druckspeicher, zum kurzzeitigen Erhöhen des Motoröldrucks aufweist. Dies ermöglicht vorteilhaft eine Integration des Umschaltventils in vorhandene Motorölsysteme, wodurch der Einsatzbereich des Umschaltventils erweitert wird.According to a preferred embodiment, the actuating pulse can be applied by an engine oil pressure, wherein the internal combustion engine has means, for example a controllable oil pump or a pressure accumulator, for briefly increasing the engine oil pressure. This advantageously makes it possible to integrate the changeover valve into existing engine oil systems, thereby widening the range of use of the changeover valve.
Die Erfindung wird im Folgenden anhand von Ausführungsbeispielen unter Bezugnahme auf die beiliegenden schematischen Figuren der Zeichnung näher erläutert.The invention is explained in more detail below with reference to embodiments with reference to the accompanying schematic figures of the drawing.
Von den Figuren zeigen:From the figures show:
In den Figuren der Zeichnung bezeichnen dieselben Bezugszeichen gleiche oder funktionsgleiche Komponenten, soweit nichts Gegenteiliges angegeben ist.In the figures of the drawing, the same reference numerals designate the same or functionally identical components, unless indicated otherwise.
Die
An einer zweiten Stirnfläche
Die
Der zweite Zylinderabschnitt
Die Steuerhülse
Die Funktionsweise des Umschaltventils
Zum Überführen der Kugelschreibermechanik
Die
Die
Beim Wirken des Betätigungsimpulses I auf die Stirnfläche
Die
Die Verdrehung der verstellbaren Exzentereinrichtung
Bevorzugt im Bereich des Hublagerauges
Die
Bei einem kurzzeitigen Erhöhen des Motoröldrucks, beispielsweise über eine regelbare Ölversorgungspumpe des Verbrennungsmotors oder über einen Hydraulikspeicher wird das Betätigungsmittel
Die
Das Umschaltventil
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102005055199 [0004] DE 102005055199 [0004]
Claims (15)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010016037.7A DE102010016037B4 (en) | 2010-03-19 | 2010-03-19 | Combustion engine that has an adjustable compression ratio with a changeover valve |
FR1152203A FR2957648B1 (en) | 2010-03-19 | 2011-03-17 | INVERSION VALVE AND INTERNAL COMBUSTION ENGINE COMPRISING SUCH AN INVERSION VALVE |
CN201110068526XA CN102213332B (en) | 2010-03-19 | 2011-03-18 | Reversing valve and combustion engine with the reversing valve |
JP2011062072A JP5260698B2 (en) | 2010-03-19 | 2011-03-22 | Internal combustion engine with switching valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010016037.7A DE102010016037B4 (en) | 2010-03-19 | 2010-03-19 | Combustion engine that has an adjustable compression ratio with a changeover valve |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102010016037A1 true DE102010016037A1 (en) | 2011-09-22 |
DE102010016037B4 DE102010016037B4 (en) | 2022-07-28 |
Family
ID=44558419
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010016037.7A Active DE102010016037B4 (en) | 2010-03-19 | 2010-03-19 | Combustion engine that has an adjustable compression ratio with a changeover valve |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP5260698B2 (en) |
CN (1) | CN102213332B (en) |
DE (1) | DE102010016037B4 (en) |
FR (1) | FR2957648B1 (en) |
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Also Published As
Publication number | Publication date |
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FR2957648A1 (en) | 2011-09-23 |
FR2957648B1 (en) | 2014-12-26 |
JP2011196549A (en) | 2011-10-06 |
CN102213332B (en) | 2013-12-04 |
CN102213332A (en) | 2011-10-12 |
DE102010016037B4 (en) | 2022-07-28 |
JP5260698B2 (en) | 2013-08-14 |
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