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EP1731723A1 - Gas exchange valve of an internal combustion engine - Google Patents

Gas exchange valve of an internal combustion engine Download PDF

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Publication number
EP1731723A1
EP1731723A1 EP06113928A EP06113928A EP1731723A1 EP 1731723 A1 EP1731723 A1 EP 1731723A1 EP 06113928 A EP06113928 A EP 06113928A EP 06113928 A EP06113928 A EP 06113928A EP 1731723 A1 EP1731723 A1 EP 1731723A1
Authority
EP
European Patent Office
Prior art keywords
valve
cone
gas exchange
shaft part
shaft
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
EP06113928A
Other languages
German (de)
French (fr)
Other versions
EP1731723B1 (en
Inventor
Marcus Abele
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.)
Mahle International GmbH
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Mahle International 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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1731723A1 publication Critical patent/EP1731723A1/en
Application granted granted Critical
Publication of EP1731723B1 publication Critical patent/EP1731723B1/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01L3/20—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
    • 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
    • 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

Definitions

  • the invention relates to a gas exchange valve of an internal combustion engine according to the preamble of patent claim 1.
  • Such a valve is off DE 102 57 505 B4 known.
  • this valve with a relatively small valve stem outer diameter outside the valve disk, an as large as possible, directly adjacent to the bottom of the valve disk inner shank cavity is provided by a shaft diameter increase within the valve disk for filling with an example shaker capable, good thermal conductivity coolant.
  • an axially as far as possible from the bottom of the valve plate extending, outer, annular cavity of the valve disk should be present and have an insulating effect. To achieve the insulating effect of this cavity can be easily filled in the air or filled with a planteoliermedium of any kind.
  • valve disk due to the inside of the valve disk optimally large inner diameter of the valve stem heat can be withdrawn extremely effective the bottom of the valve disk, wherein the particular shaker-shaped cooling medium within of the shaft cavity for good heat dissipation in the valve disc axially opposite direction in that valve stem area provides, in which the valve stem is guided within the cylinder head and in which the heat can flow into the valve head.
  • valve plug is welded at its tapered end to the outer portion of the valve cone engaging shaft.
  • weld forms on the outer circumference of the shank an annular step whose radial inner edge of the outer circumference of the shank and whose outer radial edge are formed by the outer circumference of the valve cone at its tapered end.
  • This annular step represents an undesirable flow disturbing edge for gas flowing around the valve during a gas exchange. This disturbing edge promotes coking of constituents capable of coking within the gases flowing around, with the result of a coke deposit, preferably at the interfering edge. Such coke deposition is harmful.
  • the invention is concerned with the problem of avoiding coke deposits on the peripheral regions of the valve stem and poppet consisting of valve stem and poppet.
  • the invention is based on the general idea of providing the component composed of valve plug and valve stem outside the valve bottom with an outer surface which is as smooth as possible, that is to say in particular stepless, in order to avoid flow disturbing edges which promote coke deposits.
  • the connection area between the valve stem and valve plug in the tapered valve cone area is advantageously achieved in that the respective axial end portions of the valve cone and the upper shaft part outside flush, ie with the same outer diameter, directly abut each other.
  • the shaft connecting region that is to say the region in which the upper and lower shaft parts are connected to one another, on the one hand, and the connecting region between the valve shaft and the valve cone, on the other hand, are designed to be interlocking.
  • a such a design may be, for example, that a common weld is placed through the impact gap between the valve cone and directly adjacent, upper shaft part.
  • a valve stem 1 is composed of two parts in a gas exchange valve according to the invention, namely an upper shaft part 2 and a lower shaft part 3, which are telescopically pushed into one another and connected in a connecting region 4, preferably welded. In the telescopic connection, the lower shaft part 3 engages in the upper shaft part 2.
  • Such constructed valves are also referred to as lightweight valves.
  • connection region 4 is composed of two axially separate special connection regions, namely a first and a second special connection region 4 'or 4 ".
  • the upper shaft part 2 with the valve cone 6 closed by a valve bottom 5 are welded together as components abutting thereon flush with the outside, wherein the welded joint thus obtained simultaneously incorporates the lower shaft part 3 into this connection.
  • the outer areas of the valve cone 6 on the one hand and the lower shaft part 3 on the other side have the same outer diameters, so that there is a smooth peripheral connection area, along which the gas flow can slide along without interference edges.
  • the valve of the exemplary embodiment is primarily an intake valve of an internal combustion engine, whereby an exhaust valve may also be designed accordingly.
  • the valve plate 7 of such a valve is composed here of a series of individual, each welded together parts, namely a hollow valve plug 6, the valve bottom 5 and the lower shaft portion 3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Lift Valve (AREA)

Abstract

The valve has a valve shaft (1) made up of two parts, namely an upper shaft part (2) and a lower shaft part (3). The shaft parts are telescoped together and joined in a connecting area (4) that is made up of two axially separate special joining areas. The upper shaft is welded to a valve cone (6) sealed by a valve tray (5), where outer areas of the valve cone and the lower shaft part have same outside diameter. Hollow spaces exist between the lower shaft part and the valve cone in a form of an annular space and within the lower shaft part in the form of a hollow cone.

Description

Die Erfindung betrifft ein Gaswechselventil eines Verbrennungsmotors nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a gas exchange valve of an internal combustion engine according to the preamble of patent claim 1.

Stand der TechnikState of the art

Ein solches Ventil ist aus DE 102 57 505 B4 bekannt. Bei diesem Ventil ist bei einem relativ kleinen Ventilschaftaußendurchmesser außerhalb des Ventiltellers durch eine Schaftdurchmesservergrößerung innerhalb des Ventiltellers ein möglichst großer, direkt an den Boden des Ventiltellers angrenzender, innerer Schafthohlraum zum Befüllen mit einem beispielsweise shakerfähigen, gut wärmeleitfähigen Kühlmittel vorgesehen. Gleichzeitig soll ein sich möglichst axial weit von dem Boden des Ventiltellers erstreckender, äußerer, ringförmiger Hohlraum des Ventiltellers vorhanden sein und isolierend wirken. Zur Erzielung der Isolierwirkung kann dieser Hohlraum in einfachster Weise luftgefüllt oder mit einem Wärmeisoliermedium beliebiger Art gefüllt sein. Die besondere Wirkung einer solchen erfindungsgemäßen Ausführung besteht darin, dass durch den im Inneren des Ventiltellers optimal großen Innendurchmesser des Ventilschaftes äußerst wirksam dem Boden des Ventiltellers Wärme entzogen werden kann, wobei das insbesondere shakerförmige Kühlmedium innerhalb des Schafthohlraumes für eine gute Wärmeabführung in die vom Ventilteller axial entgegengesetzte Richtung in demjenigen Ventilschaftbereich sorgt, in dem der Ventilschaft innerhalb des Zylinderkopfes geführt ist und in dem die Wärme in den Ventilkopf abfließen kann.Such a valve is off DE 102 57 505 B4 known. In the case of this valve, with a relatively small valve stem outer diameter outside the valve disk, an as large as possible, directly adjacent to the bottom of the valve disk inner shank cavity is provided by a shaft diameter increase within the valve disk for filling with an example shaker capable, good thermal conductivity coolant. At the same time, an axially as far as possible from the bottom of the valve plate extending, outer, annular cavity of the valve disk should be present and have an insulating effect. To achieve the insulating effect of this cavity can be easily filled in the air or filled with a Wärmeisoliermedium of any kind. The particular effect of such an embodiment according to the invention is that due to the inside of the valve disk optimally large inner diameter of the valve stem heat can be withdrawn extremely effective the bottom of the valve disk, wherein the particular shaker-shaped cooling medium within of the shaft cavity for good heat dissipation in the valve disc axially opposite direction in that valve stem area provides, in which the valve stem is guided within the cylinder head and in which the heat can flow into the valve head.

Bei jenem Ventil ist der Ventilkegel an seinem verjüngten Ende mit dem Außenbereich des in den Ventilkegel eingreifenden Schaft verschweißt. Dabei bildet die Schweißnaht an dem Schaftaußenumfang eine Ringstufe, deren radiale Innenkante von dem Schaftaußenumfang und deren radiale Außenkante von dem Außenumfang des Ventilkegels an dessen verjüngtem Ende gebildet werden. Diese Ringstufe stellt eine unerwünschte Strömungsstörkante für bei einem Gaswechsel das Ventil umströmendes Gas dar. Diese Störkante fördert eine Verkokung von verkokungsfähigen Bestandteilen innerhalb der umströmenden Gase mit der Folge einer Koksablagerung vorzugsweise an der Störkante. Eine solche Koksablagerung ist schädlich.In that valve, the valve plug is welded at its tapered end to the outer portion of the valve cone engaging shaft. In this case, the weld forms on the outer circumference of the shank an annular step whose radial inner edge of the outer circumference of the shank and whose outer radial edge are formed by the outer circumference of the valve cone at its tapered end. This annular step represents an undesirable flow disturbing edge for gas flowing around the valve during a gas exchange. This disturbing edge promotes coking of constituents capable of coking within the gases flowing around, with the result of a coke deposit, preferably at the interfering edge. Such coke deposition is harmful.

Problemproblem

Die Erfindung beschäftigt sich mit dem Problem, Koksablagerungen an den außerhalb des Ventilbodens liegenden Umfangsbereichen der aus Ventilschaft und Ventilkegel bestehenden Einrichtung zu vermeiden.The invention is concerned with the problem of avoiding coke deposits on the peripheral regions of the valve stem and poppet consisting of valve stem and poppet.

Lösungsolution

Gelöst wird dieses Problem durch eine Ausführung eines gattungsgemäßen Gaswechselventils nach dem kennzeichnenden Merkmal des Patentanspruchs 1.This problem is solved by an embodiment of a generic gas exchange valve according to the characterizing feature of patent claim 1.

Vorteileadvantages

Die Erfindung beruht auf dem allgemeinen Gedanken, das sich aus Ventilkegel und Ventilschaft zusammensetzende Bauteil außerhalb des Ventilbodens mit einer möglichst insgesamt glatten, das heißt insbesondere stufenfrei, verlaufenden Außenoberfläche zu versehen, um koksablagerungsfördernde Strömungstörkanten zu vermeiden. Besonderes Augenmerk legt die Erfindung dabei auf den Verbindungsbereich zwischen Ventilschaft und Ventilkegel im verjüngten Ventilkegelbereich. Erreicht wird dies vorteilhaft dadurch, dass die betreffenden axialen Endbereiche des Ventilkegels und des oberen Schaftteiles außenbündig, das heißt mit gleichem Außendurchmesser, direkt aneinander stoßen.The invention is based on the general idea of providing the component composed of valve plug and valve stem outside the valve bottom with an outer surface which is as smooth as possible, that is to say in particular stepless, in order to avoid flow disturbing edges which promote coke deposits. Particular attention is paid to the invention, the connection area between the valve stem and valve plug in the tapered valve cone area. This is advantageously achieved in that the respective axial end portions of the valve cone and the upper shaft part outside flush, ie with the same outer diameter, directly abut each other.

Ausgestaltungen der ErfindungEmbodiments of the invention

Vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Advantageous embodiments of the invention are the subject of the dependent claims.

Bei einer Ausgestaltung nach Anspruch 2 sind der Schaftverbindungsbereich, das heißt der Bereich, in dem das obere und untere Schaftteil miteinander verbunden sind, einerseits und der Verbindungsbereich zwischen dem Ventilschaft und dem Ventilkegel andererseits ineinandergreifend ausgebildet. Eine solche Ausführung kann beispielsweise darin bestehen, dass eine gemeinsame Schweißnaht durch den Stoßspalt zwischen Ventilkegel und direkt angrenzendem, oberem Schaftteil gelegt wird.In an embodiment according to claim 2, the shaft connecting region, that is to say the region in which the upper and lower shaft parts are connected to one another, on the one hand, and the connecting region between the valve shaft and the valve cone, on the other hand, are designed to be interlocking. A such a design may be, for example, that a common weld is placed through the impact gap between the valve cone and directly adjacent, upper shaft part.

Alternativ kann es entsprechend Anspruch 3 zweckmäßig sein, zu einem gemeinsamen Verbindungsbereich noch einen zusätzlichen, axial getrennten, ausschließlichen Verbindungsbereich zwischen oberem und unterem Schaftteil vorzusehen.Alternatively, it may be expedient according to claim 3, to provide a common connection area nor an additional, axially separate, exclusive connection area between the upper and lower shaft part.

Ausführungsbeispielembodiment

Die Erfindung wird im Folgenden anhand eines vorteilhaften Ausführungsbeispieles näher erläutert.The invention will be explained in more detail below with reference to an advantageous embodiment.

Es zeigt die einzige

Fig. 1
einen Längsschnitt durch ein Gaswechselventil.
It shows the only one
Fig. 1
a longitudinal section through a gas exchange valve.

Ein Ventilschaft 1 setzt sich bei einem erfindungsgemäßen Gaswechselventil aus zwei Teilen zusammen, nämlich aus einem oberen Schaftteil 2 und einem unteren Schaftteil 3, welche teleskopartig ineinander geschoben und in einem Verbindungsbereich 4 verbunden, vorzugsweise verschweißt, sind. Bei der Teleskopverbindung greift das untere Schaftteil 3 in das obere Schaftteil 2 ein. Derart aufgebaute Ventile werden auch als Leichtbauventile bezeichnet.A valve stem 1 is composed of two parts in a gas exchange valve according to the invention, namely an upper shaft part 2 and a lower shaft part 3, which are telescopically pushed into one another and connected in a connecting region 4, preferably welded. In the telescopic connection, the lower shaft part 3 engages in the upper shaft part 2. Such constructed valves are also referred to as lightweight valves.

Der Verbindungsbereich 4 setzt sich aus zwei axial voneinander getrennten Spezialverbindungsbereichen zusammen, nämlich einem ersten und einem zweiten Spezialverbindungsbereich 4' beziehungsweise 4".The connection region 4 is composed of two axially separate special connection regions, namely a first and a second special connection region 4 'or 4 ".

In dem ersten Spezialverbindungsbereich 4' sind miteinander verschweißt als dort axial, außenbündig aneinanderstoßende Bauteile das obere Schaftteil 2 mit dem durch einen Ventilboden 5 verschlossenen Ventilkegel 6, wobei die hierdurch erzielte Schweißverbindung gleichzeitig das untere Schaftteil 3 mit in diese Verbindung einbezieht.In the first special connection area 4 ', the upper shaft part 2 with the valve cone 6 closed by a valve bottom 5 are welded together as components abutting thereon flush with the outside, wherein the welded joint thus obtained simultaneously incorporates the lower shaft part 3 into this connection.

In einem bei dem Ausführungsbeispiel enthaltenen, axial in Richtung des freien Schaftendes von dem ersten Spezialverbindungsbereich 4' beabstandeten, zweiten Spezialverbindungsbereich 4" sind lediglich das obere und untere Schaftteil 2, 3 miteinander verschweißt und zwar derart, dass eine ringförmige Schweißnaht axial vollständig in demjenigen Bereich liegt, in dem sich oberes und unteres Schaftteil 2, 3 überlappen.In a second special connection area 4 "spaced axially from the first special connection area 4 'in the exemplary embodiment, only the upper and lower shaft parts 2, 3 are welded together in such a way that an annular weld extends axially completely in that area lies, in which upper and lower shaft part 2, 3 overlap.

In dem ersten Spezialverbindungsbereich 4' besitzen die hier einmündenden Außenbereiche des Ventilkegels 6 einerseits und des unteren Schaftteils 3 andererseits jeweils gleiche Außendurchmesser, so dass ein glatter Umfangsverbindungsbereich vorliegt, an dem die Gasströmung störkantenfrei entlanggleiten kann.In the first special connection area 4 ', the outer areas of the valve cone 6 on the one hand and the lower shaft part 3 on the other side have the same outer diameters, so that there is a smooth peripheral connection area, along which the gas flow can slide along without interference edges.

Bei dem Ventil des Ausführungsbeispieles handelt es sich in erster Linie um ein Einlassventil eines Verbrennungsmotors, wobei auch ein Auslassventil entsprechend ausgebildet sein kann. Der Ventilteller 7 eines solchen Ventiles setzt sich hier aus einer Reihe einzelner, jeweils miteinander verschweißter Teile zusammen, nämlich einem hohlen Ventilkegel 6, dem Ventilboden 5 sowie dem unteren Schaftteil 3. Dabei bestehen Hohlräume einerseits zwischen dem unteren Schaftteil 3 und dem Ventilkegel 6 in der Form eines Ringraumes sowie innerhalb des unteren Schaftteiles 3 in der Form eines Hohlkegels, dessen erweiterter Bereich an dem Ventilboden 5 angrenzt.The valve of the exemplary embodiment is primarily an intake valve of an internal combustion engine, whereby an exhaust valve may also be designed accordingly. The valve plate 7 of such a valve is composed here of a series of individual, each welded together parts, namely a hollow valve plug 6, the valve bottom 5 and the lower shaft portion 3. There are cavities on the one hand between the lower shaft part 3 and the valve plug 6 in the Shape of an annular space and within the lower shaft portion 3 in the form of a hollow cone whose extended area adjacent to the valve bottom 5.

Durch den erfindungsgemäßen, bündigen Übergang von oberem Schaft 2 in den angrenzenden Außenumfang des Ventilkegels 6 werden hauptsächlich bei einem Einlassventil eines Verbrennungsmotors, aber auch bei einem Auslassventil die Strömungseigenschaften deutlich verbessert, was in diesem Bereich verkokungsartige Wandablagerungen verhindert.Due to the inventive, flush transition from upper shaft 2 in the adjacent outer periphery of the valve plug 6, the flow characteristics are significantly improved mainly in an intake valve of an internal combustion engine, but also in an exhaust valve, which prevents coking-like wall deposits in this area.

Durch eine doppelte Verbindung, vorzugsweise eine Stumpfnahtschweißung im Schaftbereich zwischen einerseits dem Ventilkegel 6 und dem oberen Schaftteil 2 und andererseits zwischen oberem Schaftteil 2 und unterem Schaftteil 3 wird eine besonders hohe Stabilität eines Gaswechselventils eines Verbrennungsmotors erreicht.By a double connection, preferably a butt weld in the shaft area between on the one hand the valve cone 6 and the upper shaft part 2 and on the other hand between upper shaft part 2 and lower shaft part 3 a particularly high stability of a gas exchange valve of an internal combustion engine is achieved.

Claims (4)

Gaswechselventil eines Verbrennungsmotors mit jeweils einem hohlen Ventilschaft (1) und Ventilteller (7), bei dem - der Ventilteller (7) aus einem Ventilboden (5) und einem mit dessen äußerem Rand verbundenen Ventilkegel (6) besteht, wobei der Ventilkegel (6) sich mit von dem Ventilboden (5) zunehmendem Abstand verjüngt, - der hohle Ventilschaft (1) - den von dem Ventilkegel (6) umschlossenen Raum vollständig durchdringend - einerseits fest mit dem Ventilboden (5) und andererseits mit dem verjüngten Ende des Ventilkegels (6) verbunden ist, - der Ventilschaft (1) aus teleskopartig ineinander geschobenen Teilen besteht, nämlich einem dem Ventilboden (5) zugewandten unteren Schaftteil (3) und einem, sich daran anschließenden oberen Schaftteil (2), wobei das untere in das obere Schaftteil (3, 2) formschlüssig eingreift, - oberes und unteres Schaftteil (2, 3) in einem Schaftverbindungsbereich (4) miteinander verbunden, insbesondere miteinander verschweißt sind, dadurch gekennzeichnet,
dass das obere Schaftteil (2) an seinem Außenumfang bündig in den angrenzenden Außenumfang des Ventilkegels (6) übergeht, wozu das obere Schaftteil (2) und der direkt angrenzende Bereich des Ventilkegels (6) gleiche Außendurchmesser aufweisen.Gas exchange valve of an internal combustion engine, each with a hollow valve stem (1) and valve disc (7), in which - The valve plate (7) consists of a valve bottom (5) and connected to the outer edge of the valve cone (6), wherein the valve cone (6) tapers from the valve bottom (5) increasing distance, - The hollow valve stem (1) - the completely enclosed by the valve cone (6) space penetrating - on the one hand firmly connected to the valve bottom (5) and the other with the tapered end of the valve plug (6) - The valve stem (1) consists of telescopically nested parts, namely a valve bottom (5) facing the lower shaft portion (3) and an adjoining upper shaft portion (2), wherein the lower in the upper shaft portion (3, 2) positively engages, Upper and lower shaft part (2, 3) in a shaft connecting region (4) connected to each other, in particular welded together, characterized,
that the upper shaft part (2) on its outer circumference merges flush with the adjacent outer periphery of the valve cone (6), including the upper shaft part (2) and the directly adjacent Area of the valve cone (6) have the same outer diameter. Gaswechselventil nach Anspruch 1,
dadurch gekennzeichnet,
dass der Schaftverbindungsbereich und der Verbindungsbereich zwischen dem Ventilschaft (1) und dem Ventilkegel (6) ineinandergreifend als Verbindungsbereich (4') ausgebildet sind.Gas exchange valve according to claim 1,
characterized,
in that the shaft connection region and the connection region between the valve stem (1) and the valve cone (6) are designed to be interlocking as a connection region (4 '). Gaswechselventil nach Anspruch 1,
dadurch gekennzeichnet,
dass ein ausschließlicher Schaftverbindungsbereich (4'') einerseits und der Verbindungsbereich (4') nach Anspruch 2 andererseits in Richtung der Achse des Ventilschaftes (1) voneinander beabstandet liegen.Gas exchange valve according to claim 1,
characterized,
that an exclusive shaft connecting area (4 '') on the one hand and the connecting area (4 ') according to claim 2 on the other hand in the direction of the axis of the valve stem (1) are spaced apart. Gaswechselventil nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass der ausschließliche Schaftverbindungsbereich (4") vollständig innerhalb eines Bereiches liegt, in dem sich oberes und unteres Schaftteil (2, 3) axial überlappen.Gas exchange valve according to one of the preceding claims,
characterized,
in that the exclusive shaft connecting region (4 ") lies completely within a region in which upper and lower shaft parts (2, 3) overlap axially.
EP06113928A 2005-06-11 2006-05-15 Gas exchange valve of an internal combustion engine Ceased EP1731723B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005027130A DE102005027130A1 (en) 2005-06-11 2005-06-11 Gas exchange valve of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1731723A1 true EP1731723A1 (en) 2006-12-13
EP1731723B1 EP1731723B1 (en) 2007-09-26

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EP06113928A Ceased EP1731723B1 (en) 2005-06-11 2006-05-15 Gas exchange valve of an internal combustion engine

Country Status (3)

Country Link
US (1) US7603976B2 (en)
EP (1) EP1731723B1 (en)
DE (2) DE102005027130A1 (en)

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DE102006061127B4 (en) * 2006-12-22 2016-07-14 Mahle International Gmbh Metallic lightweight valve of an internal combustion engine
JP2013019379A (en) * 2011-07-13 2013-01-31 Honda Motor Co Ltd Valve cooling device of internal combustion engine
DE102013210899A1 (en) * 2013-06-11 2014-12-11 Mahle International Gmbh Method for producing a built-up hollow valve
DE102013210900A1 (en) 2013-06-11 2014-12-11 Mahle International Gmbh Gas exchange valve of an internal combustion engine

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DE10257505A1 (en) * 2001-12-27 2003-07-17 Mahle Ventiltrieb Gmbh Producing method of gas shuttle valve for internal combustion engine involves correctly fitting and permanently bonding valve shaft and thrust section to predetermined length
DE10204122C1 (en) * 2002-02-01 2003-05-08 Daimler Chrysler Ag Valve, for reciprocating piston machine, comprises a valve disk having an undercut expansion axially protruding over an enlarged area of a valve shaft to axially clamp the enlarged area and produce a form-locking connection
DE10354074A1 (en) * 2003-11-19 2005-06-02 Daimlerchrysler Ag lightweight valve
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CN114086718A (en) * 2020-12-31 2022-02-25 江苏沪宁钢机股份有限公司 High-precision horn-shaped elliptical cone and manufacturing method thereof

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DE102005027130A1 (en) 2006-12-14
DE502006000114D1 (en) 2007-11-08
US20060278193A1 (en) 2006-12-14
US7603976B2 (en) 2009-10-20

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