WO2011061189A2 - Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines - Google Patents

Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines Download PDF

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Publication number
WO2011061189A2
WO2011061189A2 PCT/EP2010/067578 EP2010067578W WO2011061189A2 WO 2011061189 A2 WO2011061189 A2 WO 2011061189A2 EP 2010067578 W EP2010067578 W EP 2010067578W WO 2011061189 A2 WO2011061189 A2 WO 2011061189A2
Authority
WO
WIPO (PCT)
Prior art keywords
sliding
sliding sleeve
sealing
sealing seat
internal combustion
Prior art date
Application number
PCT/EP2010/067578
Other languages
German (de)
French (fr)
Other versions
WO2011061189A3 (en
Inventor
Otto Daude
Günter Elsbett
Original Assignee
Otto Daude
Elsbett G
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
Priority claimed from DE102009053720A external-priority patent/DE102009053720A1/en
Application filed by Otto Daude, Elsbett G filed Critical Otto Daude
Priority to JP2012539302A priority Critical patent/JP2013511639A/en
Priority to CN2010800616850A priority patent/CN102713153A/en
Priority to US13/510,854 priority patent/US20120291744A1/en
Priority to EP10781664A priority patent/EP2501900A2/en
Publication of WO2011061189A2 publication Critical patent/WO2011061189A2/en
Publication of WO2011061189A3 publication Critical patent/WO2011061189A3/en

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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
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/02—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L7/04—Rotary or oscillatory slide valve-gear or valve arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J10/00—Engine or like cylinders; Features of hollow, e.g. cylindrical, bodies in general
    • F16J10/02—Cylinders designed to receive moving pistons or plungers
    • F16J10/04—Running faces; Liners
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B19/00—Special folding or telescoping of umbrellas
    • A45B19/04—Special folding or telescoping of umbrellas with telescopic sticks
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B25/00—Details of umbrellas
    • A45B25/02—Umbrella frames
    • 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
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/04—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves
    • F01L5/06—Slide valve-gear or valve-arrangements with cylindrical, sleeve, or part-annularly shaped valves surrounding working cylinder or piston
    • 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
    • F01L5/00—Slide valve-gear or valve-arrangements
    • F01L5/24—Component parts, details or accessories, not provided for in preceding subgroups in 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
    • F01L7/00—Rotary or oscillatory slide valve-gear or valve arrangements
    • F01L7/16—Sealing or packing arrangements specially therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45B—WALKING STICKS; UMBRELLAS; LADIES' OR LIKE FANS
    • A45B25/00—Details of umbrellas
    • A45B25/10—Umbrella crowns
    • 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
    • F02B75/28—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F02B75/282—Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders the pistons having equal strokes

Definitions

  • the invention is particularly applicable to use
  • Suitable for reciprocating engines the working gas inlet and outlet control slots, or channels are arranged in the region of the upper Kolbentotissue. It is known ⁇ DE-A-1906542), the gas exchange in internal combustion engines by
  • the known cylinder seal for laterally moving pistons by means of seals against the gas pressure piston rings can not be made for reasons of space for the sliding sleeve. Rather, here either an embodiment similar to that of a valve in question, i. the sliding sleeve has a conical sealing seat on its edge which controls the channel opening, or it closes off the channel openings, as is known with slider controls
  • valve seat-like sealing end face of a sliding sleeve with the same internal diameter throughout differs in the function of conventional valves in that the gas pressure can exert no closing force on the sealing surface. On the contrary, if the
  • pressurized gas can get into the resulting gap and seeks to increase it, as a result of which the sliding sleeve can be pressed on or at least continues to leak.
  • the object of the invention is therefore the,
  • Inner diameter of the sliding sleeve reaches in the region of the sealing end face, i. the outer sealing
  • Cylinder located sealing seat are made interchangeable. This can, similar to conventional
  • Valve seats a well-suited material to be used.
  • Range is swept by the piston and piston rings, suitably a conventional
  • the sliding sleeve can be made of high-strength and heat-resistant material in the region of its sealing surface.
  • the various materials can be friction welded,
  • connection method be connected.
  • the advantage of this design with different materials is a higher strength and temperature resistance.
  • Fig. 1 shows a cross section through an opposed piston engine. Two pistons 1 and 2 move in opposite directions in one
  • Motor housing consisting of two crankcases 3 and 4 and two cylinder halves 5 and 6 which are interconnected by a cylinder center part 7.
  • the pistons are driven by two crankshafts 8 and 9, as well as the connecting rods 10 and 11. Their movement is synchronized by a gear wheel 12.
  • the pistons run in the sliding bushes 13 and 14, which in turn are slidably guided in the cylinder halves 5 and 6. By their displacement, the
  • annular gas channels 15 and 16 are opened and closed independently.
  • Fig. 2 shows the details of the aforementioned cross section in the region of the seal of the sliding sleeves 13 and first The sliding sleeve 13 is in the open state and the
  • Sealing seat for the sliding bushes is mounted in the cylinder center part 7 and as a conical sealing seat 15 and 16th
  • Sliding sleeve is used and their bursting prevented by high gas pressures.
  • Condition for a proper function is that the outer diameter of the sealing seat is not greater than the inner diameter of the sliding sleeve and the space behind the. Sealing seat is sufficiently vented, so that there is no pressure builds up in leaky seat there. This purpose of venting serve local grooves 20 which are mounted at some points of the circumference of the fit 19.
  • Fig. 3 shows an example of a replaceable seat ring 21, which is held by the flanges 22 and 23, which are fastened by means of the screws 24.
  • This embodiment has the advantage that for the seat ring 21, an optimally suitable material can be selected, regardless of the material of the cylinder center part 7. It is also shown that the
  • Sealing surfaces having front side of the sliding sleeve can be designed as a separate material-optimized part 25, which is firmly connected to the sliding sleeve.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Lift Valve (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The invention relates to a sealing system for sliding sleeves for controlling gas exchange in internal combustion engines. Said sealing system is designed such that the pressure on the sealing seat of the sliding sleeve increases when the gas pressure increases, which is similar to that of common valves in internal combustion engines. This is obtained by means of a pressure stage on the inner diameter in the region of the sealing seat of the sliding sleeve. As a result, the maximum outer diameter of the sealing seat does not exceed the inner diameter of the piston running surface of the sliding sleeve, the closing pressure acting upon the sliding sleeve being equal to or greater than the maximum possible opening pressure acting upon the sliding sleeve even when the sealing seat is subjected to a total gas pressure.

Description

Dichtungs-Ausführung für Schiebebüchsen zur  Sealing design for sliding bushes for
Gaswechseisteuerung in Verbrennungsmotoren  Gas exchange control in internal combustion engines
Die Erfindung ist insbesondere zur Anwendung bei The invention is particularly applicable to use
Gegenkolbenmotoren geeignet, deren das Arbeitsgas zu- und abführenden Steuerschlitze, bzw. Kanäle im Bereich der oberen Kolbentotpunkte angeordnet sind. Es ist bekannt {DE-A- 1906542), den Gaswechsel in Verbrennungsmotoren durch Suitable for reciprocating engines, the working gas inlet and outlet control slots, or channels are arranged in the region of the upper Kolbentotpunkte. It is known {DE-A-1906542), the gas exchange in internal combustion engines by
Schiebebüchsen zu steuern. Es ist auch bekannt Control sliding bushes. It is also known
(DE202005021624U1 und DE202006020546U1) durch solche, den Gaswechsel steuernde Schiebebüchsen in Gegenkolbenmotoren ein Schlitzüberlaufen der Kolben zu vermeiden. Hierbei sind beliebige Steuerzeiten sowohl im Zweitaktverfahren als auch im Viertaktverfahren erzielbar. Besonders kritisch gestaltet sich hierbei allerdings eine sichere Abdichtung der (DE202005021624U1 and DE202006020546U1) by such, the gas exchange controlling sliding bushes in opposed piston engines to avoid slit overflow of the piston. Any desired timing can be achieved both in the two-stroke process and in the four-stroke process. Particularly critical here, however, designed a secure seal the
Schiebebüchsen gegen die durch sie gesteuerten zu- und abführenden Gaskanäle, da insbesondere bei Dieselmotoren hohe Drücke während der Verdichtung und Expansion des Arbeitsgases auftreten . Slide bushes against the controlled by them incoming and outgoing gas ducts, since especially in diesel engines high pressures occur during the compression and expansion of the working gas.
Die bekannte Zylinderabdichtung für lateral bewegte Kolben mittels gegen den Gasdruck dichtenden Kolbenringen lässt sich jedoch aus räumlichen Gründen für die Schiebebüchse nicht vornehmen. Vielmehr kommt hier entweder eine Ausführung ähnlich der eines Ventils infrage, d.h. die Schiebebüchse weist an ihrer die Kanalöffnung steuernden Kante einen kegelförmigen Dichtsitz auf, oder sie verschließt - wie bei Schiebersteuerungen bekannt - die Kanalöffungen durch However, the known cylinder seal for laterally moving pistons by means of seals against the gas pressure piston rings can not be made for reasons of space for the sliding sleeve. Rather, here either an embodiment similar to that of a valve in question, i. the sliding sleeve has a conical sealing seat on its edge which controls the channel opening, or it closes off the channel openings, as is known with slider controls
Überdeckung. Es ist aus den o.g. Erfindungen Coverage. It is from the o.g. inventions
(DE202005021624U1 und DE202006020546U1) auch bekannt, beide Methoden der Abdichtung gleichzeitig anzuwenden.  (DE202005021624U1 and DE202006020546U1) also known to apply both methods of sealing simultaneously.
Das Überfahren der Öffnungen durch die Steuerkante der Schiebebüchse hat den Nachteil, dass sie gegen höhere Drücke nur unzulänglich abdichtet, da die Schiebebüchse ein The driving over the openings through the control edge of the sliding sleeve has the disadvantage that it seals against high pressures only inadequate, since the sliding sleeve a
Mindestspiel benötigt um ihre Bewegbarkeit sicherzustellen. Zudem muss die Überdeckungsstrecke kurz gehalten werden, um große Hübe der Schiebebüchsen als auch Reibung zu vermeiden. Durch den zwangsläufig verbleibenden Spalt kann viel Gas, besonders bei niedrigen Drehzahlen entweichen. Minimum game needed to ensure their mobility. In addition, the coverage distance must be kept short in order to to avoid large strokes of the sliding sleeves as well as friction. Due to the inevitably remaining gap can escape much gas, especially at low speeds.
Die Ausführung einer ventilsitzartig dichtenden Stirnseite einer Schiebebüchse mit durchgehend gleichem Innendurchmesser unterscheidet sich in der Funktion von üblichen Ventilen dadurch, dass der Gasdruck keine schließende Kraft auf die Abdichtungsfläche ausüben kann. Im Gegenteil, wenn die The execution of a valve seat-like sealing end face of a sliding sleeve with the same internal diameter throughout differs in the function of conventional valves in that the gas pressure can exert no closing force on the sealing surface. On the contrary, if the
Abdichtung nicht flächendeckend dicht ist, kann unter Druck stehendes Gas in den entstehenden Spalt geraten und sucht diesen zu vergrößern, wodurch die Schiebebüchse aufgedrückt werden kann oder mindestens weiter undicht würde. If the seal is not completely watertight, pressurized gas can get into the resulting gap and seeks to increase it, as a result of which the sliding sleeve can be pressed on or at least continues to leak.
Die erfindungsgemäße Aufgabe besteht somit darin, den The object of the invention is therefore the,
Gasdruck durch konstruktive Maßnahmen als Hilfskraft zum Geschlossen halten der Schiebebüchsen zu nutzen. Use gas pressure by constructive measures as an auxiliary power to keep closed the sliding bushes.
Das wird erfindungsgemäß durch eine Druckstufe im This is inventively by a pressure in the
Innendurchmesser der Schiebebüchse im Bereich der dichtenden Stirnfläche erreicht, d.h. der äußere abdichtende Inner diameter of the sliding sleeve reaches in the region of the sealing end face, i. the outer sealing
Dichtungsdurchmesser ist kleiner als der druckwirksame Seal diameter is smaller than the pressure effective
Innendurchmesser der Schiebebüchse. Durch diese Ausbildung wird erreicht, dass die büchsenschließenden Kräfte größer sind als jene, welche büchsenöffnend wirken. Da sich der Dichtsitz mit der Druckstufe im Bereich des Kolben- Feuersteges befindet, wenn der Kolben im oberen Totpunkt steht, muss zur Kollisionsvermeidung der Kolbendurchmesser in diesem Bereich kleiner als der innere Durchmesser des Inner diameter of the sliding sleeve. This design ensures that the bushing closing forces are greater than those which open the bushing. Since the sealing seat with the pressure stage is located in the region of the piston crown, when the piston is at top dead center, the piston diameter in this area must be smaller than the inner diameter of the piston to avoid collision
Dichtsitzes sein. Aus praktischen Gründen kann der im Be tight fit. For practical reasons, the in
Zylinder befindliche Dichtsitz auswechselbar ausgeführt werden. Damit kann, ähnlich wie bei konventionellen Cylinder located sealing seat are made interchangeable. This can, similar to conventional
Ventilsitzen, ein gut geeigneter Werkstoff verwendet werden. Valve seats, a well-suited material to be used.
Vergleichbar wie bei herkömmlichen Bi-Metallventilen mit unterschiedlichen Ventilschaft- und Ventilteller-Werkstoff, kann im dichtenden Bereich der Steuerbüchse ein von deren Grundmaterial abweichendes, besser geeignetes Material verwendet werden. Während im gleitenden Teil und in dem Similar to conventional bi-metal valves with different valve stem and valve disk material, in the sealing area of the control box one of the Base material deviating, better suited material can be used. While in the sliding part and in the
Bereich der von den Kolben und Kolbenringen überstrichen wird, zweckmäßigerweise ein herkömmliches Range is swept by the piston and piston rings, suitably a conventional
Zylinderbüchsenmaterial mit guten Gleiteigenschaften Cylinder liner material with good sliding properties
verwendet wird, kann die Schiebebüchse im Bereich ihrer Dichtfläche aus hochfestem und wärmebeständigen Werkstoff gefertigt sein. Wie bei herkömmlichen Ventilen können die verschiedenen Materialien durch Reibschweißen, is used, the sliding sleeve can be made of high-strength and heat-resistant material in the region of its sealing surface. As with conventional valves, the various materials can be friction welded,
Elektronenstrahlschweißen oder andere geeignete Electron beam welding or other suitable
Verbindungsverfahren verbunden sein. Der Vorteil dieser Ausführung mit unterschiedlichen Werkstoffen ist eine höhere Festigkeit und Temperaturbelastbarkeit. Connection method be connected. The advantage of this design with different materials is a higher strength and temperature resistance.
Figurenbeschreibung figure description
Fig. 1 zeigt einen Querschnitt durch einen Gegenkolbenmotor. Zwei Kolben 1 und 2 bewegen sich gegenläufig in einem Fig. 1 shows a cross section through an opposed piston engine. Two pistons 1 and 2 move in opposite directions in one
Motorgehäuse bestehend aus zwei Kurbelgehäusen 3 und 4 und zwei Zylinderhälften 5 und 6 die durch ein Zylindermittelteil 7 miteinander verbunden sind. Die Kolben werden angetrieben durch zwei Kurbelwellen 8 und 9, sowie die Pleuel 10 und 11. Ihre Bewegung wird durch einen Rädertrieb 12 synchronisiert. Die Kolben laufen in den Schiebebüchsen 13 und 14, welche ihrerseits in den Zylinderhälften 5 und 6 verschiebbar geführt sind. Durch deren Verschiebung können die Motor housing consisting of two crankcases 3 and 4 and two cylinder halves 5 and 6 which are interconnected by a cylinder center part 7. The pistons are driven by two crankshafts 8 and 9, as well as the connecting rods 10 and 11. Their movement is synchronized by a gear wheel 12. The pistons run in the sliding bushes 13 and 14, which in turn are slidably guided in the cylinder halves 5 and 6. By their displacement, the
ringförmigen Gaskanäle 15 und 16 unabhängig voneinander geöffnet und geschlossen werden. annular gas channels 15 and 16 are opened and closed independently.
Fig. 2 zeigt die Einzelheiten des vorgenannten Querschnittes im Bereich der Abdichtung der Schiebebüchsen 13 und 1 . Die Schiebebüchse 13 ist im geöffneten Zustand und die Fig. 2 shows the details of the aforementioned cross section in the region of the seal of the sliding sleeves 13 and first The sliding sleeve 13 is in the open state and the
Schiebebüchse 14 im geschlossenen Zustand gezeigt. Der Sliding sleeve 14 shown in the closed state. Of the
Dichtsitz für die Schiebebüchsen ist im Zylindermittelteil 7 angebracht und als kegelförmiger Dichtsitz 15 und 16 Sealing seat for the sliding bushes is mounted in the cylinder center part 7 and as a conical sealing seat 15 and 16th
ausgeführt, auf dem die jeweils am dichtenden Ende der executed, on which the respective at the sealing end of the
Schiebebüchsen angebrachte kegelförmige Dichtfläche im geschlossenen Zustand aufliegt. Auf der Ringfläche, die durch den inneren Durchmesser 17 der Schiebebüchse und dem inneren Durchmesser 18 des Dichtsitzes gebildet wird, lastet jeweils der Gasdruck, der auch in der Schiebebüchse während des Slide bushes attached conical sealing surface in closed state rests. On the annular surface, which is formed by the inner diameter 17 of the sliding sleeve and the inner diameter 18 of the sealing seat, each bears the gas pressure, which is also in the sliding sleeve during the
Arbeitshubes herrscht. Dieser Druck presst die Schiebebüchsen gegen den Sitz. Im geschlossenen Zustand fährt das dichtende Ende der Schiebebüchse ein kurzes Stück in eine Passung 19, welche der Unterstützung des dichtenden Endes der Working stroke prevails. This pressure presses the sliding bushes against the seat. When closed, the sealing end of the sliding sleeve moves a short distance into a fit 19, which supports the sealing end of the
Schiebebüchse dient und deren Aufplatzen durch hohe Gasdrücke verhindert. Bedingung für eine ordnungsgemäße Funktion ist, dass der äußere Durchmesser des Dichtsitzes nicht größer als der Innendurchmesser der Schiebebüchse ist und der Raum hinter dem. Dichtsitz ausreichend entlüftet ist, so dass sich bei undichtem Sitz dort kein Druck aufbaut. Diesem Zweck der Entlüftung dienen örtliche Nuten 20, die an einigen Stellen des Umfangs der Passung 19 angebracht sind. Sliding sleeve is used and their bursting prevented by high gas pressures. Condition for a proper function is that the outer diameter of the sealing seat is not greater than the inner diameter of the sliding sleeve and the space behind the. Sealing seat is sufficiently vented, so that there is no pressure builds up in leaky seat there. This purpose of venting serve local grooves 20 which are mounted at some points of the circumference of the fit 19.
Fig. 3 zeigt ein Beispiel für einen auswechselbaren Sitzring 21, der gehalten wird durch die Flansche 22 und 23, welche mittels der Schrauben 24 befestigt sind. Diese Ausführung hat den Vorteil, dass für den Sitzring 21 ein optimal geeignetes Material gewählt werden kann, unabhängig vom Material des Zylindermittelteils 7. Es ist auch gezeigt, dass die Fig. 3 shows an example of a replaceable seat ring 21, which is held by the flanges 22 and 23, which are fastened by means of the screws 24. This embodiment has the advantage that for the seat ring 21, an optimally suitable material can be selected, regardless of the material of the cylinder center part 7. It is also shown that the
Dichtflächen aufweisende Stirnseite der Schiebebüchse als separates materialoptimiertes Teil 25 ausgeführt werden kann, welches fest mit der Schiebebüchse verbunden ist. Sealing surfaces having front side of the sliding sleeve can be designed as a separate material-optimized part 25, which is firmly connected to the sliding sleeve.

Claims

Patentansprüche claims
1. Dichtungs-Ausführung für Schiebebüchsen zur 1. Sealing design for sliding bushes for
Gaswechselsteuerung in Verbrennungsmotoren, gekennzeichnet dadurch, dass die Schiebebüchse an ihrer dichtenden Gas exchange control in internal combustion engines, characterized in that the sliding sleeve at its sealing
Stirnseite einen stufenförmig ausgebildeten Front side of a step-shaped
Abdichtungsbereich aufweist, dergestalt, dass der äußere Durchmesser des Dichtsitzes gleich oder kleiner ist, als der innere, der Kolbenführung dienende Durchmesser der Sealing region, such that the outer diameter of the sealing seat is equal to or smaller than the inner, the piston guide serving diameter of the
Schiebebüchse . Sliding sleeve.
2. Dichtungs-Ausführung an Schiebebüchsen, nach Anspruch 1 gekennzeichnet dadurch, dass der Dichtsitz kegelförmig ausgeführt ist. 2. seal execution of sliding bushes, according to claim 1, characterized in that the sealing seat is designed conical.
3. Dichtungs-Ausführung an Schiebebüchsen, nach Anspruch 1 und 2 gekennzeichnet dadurch, dass der im Zylinder 3. seal execution of sliding bushes, according to claim 1 and 2 characterized in that the cylinder
angebrachte Dichtsitz, auf welchem die Schiebebüchsen im geschlossenen Zustand aufsitzen, auswechselbar ausgeführt ist. mounted sealing seat on which the sliding bushes are seated in the closed state, is made interchangeable.
4. Dichtungs-Ausführung an Schiebebüchsen, nach Anspruch 1 bis 3 gekennzeichnet dadurch, dass der im Zylinder 4. seal execution of sliding bushes, according to claim 1 to 3, characterized in that the cylinder
angebrachte Dichtsitz, auf welchem die Schiebebüchsen im geschlossenen Zustand aufsitzen, aus zweckentsprechendem anderen Material als der Zylinder ausgeführt ist. mounted sealing seat on which the sliding bushes are seated in the closed state, designed from appropriate material other than the cylinder.
5. Dichtungs-Ausführung an Schiebebüchsen, nach Anspruch 1 bis 4 gekennzeichnet dadurch, dass die Schiebebüchse im Bereich ihrer Dichtfläche aus anderem, dem Funktionszweck entsprechend angepasstem Material ausgeführt ist. 5. seal execution of sliding bushes, according to claim 1 to 4, characterized in that the sliding bush in the region of its sealing surface is made of other, the purpose of the function correspondingly adapted material.
6. Dichtungs-Ausführung an Schiebebüchsen, nach Anspruch 5 gekennzeichnet dadurch, dass der aus anderem Material bestehende Teil der Schiebebüchse, mit dieser durch 6. seal execution of sliding bushes, according to claim 5, characterized in that the existing of other material part of the sliding sleeve, with this through
Elektronenstrahl- oder Laser-Schweißen fest verbunden ist. Electron beam or laser welding is firmly connected.
PCT/EP2010/067578 2009-11-18 2010-11-16 Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines WO2011061189A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2012539302A JP2013511639A (en) 2009-11-18 2010-11-16 Seal structure of sliding sleeve for gas exchange control in internal combustion engine
CN2010800616850A CN102713153A (en) 2009-11-18 2010-11-16 Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines
US13/510,854 US20120291744A1 (en) 2009-11-18 2010-11-16 Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines
EP10781664A EP2501900A2 (en) 2009-11-18 2010-11-16 Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE202009017640U DE202009017640U1 (en) 2009-11-18 2009-11-18 Seal design for sliding bushes for gas exchange control in internal combustion engines
DE102009053720.1 2009-11-18
DE202009017640.1 2009-11-18
DE102009053720A DE102009053720A1 (en) 2009-11-18 2009-11-18 Sealing device for sealing sliding sleeve utilized for gas exchange control in opposed-piston diesel engine, has sealing seat whose outer diameter is equal to or smaller than inner diameter of sleeve serving for piston guide

Publications (2)

Publication Number Publication Date
WO2011061189A2 true WO2011061189A2 (en) 2011-05-26
WO2011061189A3 WO2011061189A3 (en) 2011-09-15

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PCT/EP2010/067578 WO2011061189A2 (en) 2009-11-18 2010-11-16 Sealing system for sliding sleeves for controlling gas exchange in internal combustion engines

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EP (1) EP2501900A2 (en)
JP (1) JP2013511639A (en)
CN (1) CN102713153A (en)
DE (1) DE202009017640U1 (en)
WO (1) WO2011061189A2 (en)

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CN102713153A (en) 2012-10-03

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