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EP1053388B1 - Lightweight valve - Google Patents

Lightweight valve Download PDF

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Publication number
EP1053388B1
EP1053388B1 EP99908830A EP99908830A EP1053388B1 EP 1053388 B1 EP1053388 B1 EP 1053388B1 EP 99908830 A EP99908830 A EP 99908830A EP 99908830 A EP99908830 A EP 99908830A EP 1053388 B1 EP1053388 B1 EP 1053388B1
Authority
EP
European Patent Office
Prior art keywords
valve
shaft
cone
disk
lightweight
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.)
Expired - Lifetime
Application number
EP99908830A
Other languages
German (de)
French (fr)
Other versions
EP1053388A1 (en
Inventor
Marcus Abele
Thomas Glas
Andreas VON KÄNEL
Walter Krepulat
Martin Lechner
Christoph Steinmetz
Frank Sticher
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 Ventiltrieb GmbH
Original Assignee
Mahle Ventiltrieb 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 Ventiltrieb GmbH filed Critical Mahle Ventiltrieb GmbH
Priority to EP03014001A priority Critical patent/EP1359292A1/en
Publication of EP1053388A1 publication Critical patent/EP1053388A1/en
Application granted granted Critical
Publication of EP1053388B1 publication Critical patent/EP1053388B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01L3/12—Cooling of valves
    • 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
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • 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
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • F01L3/04—Coated valve members or valve-seats
    • 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
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49298—Poppet or I.C. engine valve or valve seat making
    • Y10T29/49307—Composite or hollow valve stem or head making

Definitions

  • the invention relates to a lightweight valve, in particular for an internal combustion engine according to the preamble of Claim 1.
  • valve is known from US-A-1 506 900 or DE 36 25 590 A.
  • the valve disclosed in DE-A-3 625 590 is said to contribute to development an engine type with heat-insulated combustion chambers represent.
  • the one facing the combustion chamber Valve plate is particularly thin-walled. This measure should a low heat absorption of the valve plate and cause correspondingly low heat losses.
  • About the thin walls of the valve plate are to be extended of the valve stem additional components as a support provided between the valve plate and valve stem.
  • Lightweight valves are also known for. B. from the DE 1 960 331 A, EP 0 091 097 A, US 2,731,708 or U.S. 1,294,416.
  • valve Cavity to create a relatively large, unsupported Floor area formed towards the combustion chamber, which in operation - especially with minimized wall thicknesses - due to the combustion pressure is deformed.
  • the through these deformations resulting displacements on the peripheral surface of the Valve seat contribute to premature wear of the Seat and additional stress on the valve.
  • these deformations cause additional stress in the area of the joint between the valve plate and valve cone with the risk of the connection bursting open.
  • a support of the valve plate is in itself from the US 2,439,240 known.
  • the solution presented there is due to the design of the support in terms of manufacturing technology consuming.
  • valve disc is also supported against the stem known from DE 36 25 590 A.
  • a disadvantage of those disclosed there Solutions is, however, that the support with the help an additional adapter between the valve disc and shaft is fixed, and that the wall thickness of the valve plate is very low, so that deformation of the Valve head are to be expected.
  • the invention is therefore concerned with the problem of a lightweight valve the rigidity in a simple way to increase the valve head and manufacture the To facilitate the valve.
  • Deformation values can be achieved with valves according to the invention realize that in the range of values of valves with a Valve head made of solid material.
  • the mass reduction this lightweight valve is at least 40% in comparison with solid steel valves.
  • the embodiment according to claim 1 represents an extensive Change from the usual design for lightweight valves because the valve cone is no longer integral with the Valve stem, but is manufactured as a single part and the valve stem itself - possibly with an enlarged diameter - continues to the valve plate.
  • the shaft is preferably drawn or welded Pipe made or made of solid material.
  • the valve cone is preferably fixed to the stem by soldering or welding.
  • 'Radially inside' means: away from the outside diameter of the valve plate.
  • the valve according to the invention becomes a lightweight valve created that even with thin walls and accordingly low weight and high rigidity.
  • the invention is based on the basic idea that on the Valve plate acting gas forces through direct support of the valve plate against the stem.
  • the valve disc is supported against the valve stem in connection with the valve cone a rigid Rotational surface structure with an approximately triangular cross-section.
  • a lightweight valve is known from US 4,834,036 which the shaft extends into the area of the valve plate, however, the valve head is a light, cast or forged solid material Titanium base like titanium aluminide, so this valve is generic does not belong to the hollow valves according to the invention.
  • a valve from US 1,506,900 is also still out known in 1924, which has a similar structure, from which the invention differs, however, by a different one Wall thickness ratio and another training regarding the connection of the shaft end to the valve disk different.
  • the relatively thin one disclosed there Wall thickness of the valve disc compared to the valve cone is unfavorable in terms of strength, as is the breakthrough in Valve plate for receiving the valve stem end.
  • a valve 1 for an internal combustion engine consists of a Shaft 2, a valve base, not shown, a funnel-shaped Valve plug 3 and one piece with the valve plug manufactured valve disc 4.
  • the diameter of the Shaft is expanded at the level of valve cone 3.
  • On his the lower end is the stem 2 with the valve plate 4 welded.
  • the valve cone 3 is at its upper end welded to the shaft 2.
  • the valve cone 3, the valve disk 4 and the lower, connecting both, expanded Shaft ends together form a rigid rotational surface structure.
  • the wall thickness of the valve cone 3 is smaller than the wall thickness of the valve plate 4.
  • valve plates 4 and valve cone 3 not in one piece, but by one Weld seam joined together.
  • the shaft is there made of solid material.
  • the shaft can be below the Weld also have a smaller diameter than in the area above the weld.
  • valve plate 4 and valve cone 3 are in one piece and in the valve plate 4 is a centering for the end of Shaft 2 provided.
  • a welded joint is only between the upper end of the valve plug 3 and the stem intended.
  • the wall thickness of the valve plate 4 greater than the wall thickness of the valve plug 3.
  • Fig. 4 is a valve plate 4 with a molded collar-shaped support according to claim 5 shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Description

Die Erfindung betrifft ein Leichtbauventil insbesondere für einen Verbrennungsmotor nach dem oberbegriff des Anspruchs 1.The invention relates to a lightweight valve, in particular for an internal combustion engine according to the preamble of Claim 1.

Ein derartiges Ventil ist aus der US-A-1 506 900 oder der DE 36 25 590 A bekannt. Das in DE-A-3 625 590 offenbarte Ventil soll einen Beitrag zur Entwicklung einer Motorengattung mit wärmeisolierten Verbrennungsräumen darstellen. Hierzu ist der dem Brennraum zugewandte Ventilteller besonders dünnwandig ausgebildet. Diese Maßnahme soll eine geringe Wärmeaufnahme des Ventiltellers und entsprechend niedrige Wärmeverluste bewirken. Um die Dünnwandigkeit des Ventiltellers zu ermöglichen, sind in Verlängerung des Ventilschafts zusätzliche Bauteile als Abstützung zwischen Ventilteller und Ventilschaft vorgesehen.Such a valve is known from US-A-1 506 900 or DE 36 25 590 A. The valve disclosed in DE-A-3 625 590 is said to contribute to development an engine type with heat-insulated combustion chambers represent. For this purpose, the one facing the combustion chamber Valve plate is particularly thin-walled. This measure should a low heat absorption of the valve plate and cause correspondingly low heat losses. About the thin walls of the valve plate are to be extended of the valve stem additional components as a support provided between the valve plate and valve stem.

Leichtbauventile sind ferner bekannt z. B. aus der DE 1 960 331 A, der EP 0 091 097 A, der US 2,731,708 oder der US 1,294,416.Lightweight valves are also known for. B. from the DE 1 960 331 A, EP 0 091 097 A, US 2,731,708 or U.S. 1,294,416.

Bei der Entwicklung moderner Motoren wird verstärkt auch an eine elektromagnetische, pneumatische oder hydraulische Ansteuerung des Ventiltriebs gedacht. Die für derartige Ventiltriebe aufzubringende Antriebsleistung wächst exponentiell mit dem Gewicht der oszillierenden Massen, d. h. der Ventile. Daraus ergibt sich die Forderung, Leichtbauventile bezüglich des Gewichts weiter zu optimieren, d. h. insbesondere die Wandstärken weiter zu minimieren. The development of modern engines is also increasing an electromagnetic, pneumatic or hydraulic control of the valve train. The for such valve trains the drive power to be applied is growing exponentially with the weight of the oscillating masses, d. H. the Valves. Hence the requirement for lightweight valves to further optimize in terms of weight, d. H. in particular to further minimize the wall thickness.

Bei den meisten bekannten Leichtbauventilen wird durch das Bestreben, im Innern des Ventils einen möglichst großen Hohlraum zu schaffen, eine relativ große, nicht unterstützte Bodenfläche zum Brennraum hin gebildet, die im Betrieb - insbesondere bei minimierten Wandstärken - durch den Verbrennungsdruck deformiert wird. Die durch diese Verformungen entstehenden Verschiebungen an der Umfangsfläche des Ventilsitzes tragen zu einem vorzeitigen Verschleiß des Sitzes und zur zusätzlichen Beanspruchung des Ventils bei. Außerdem bewirken diese Verformungen eine zusätzliche Beanspruchung im Bereich der Fügestelle zwischen Ventilteller und Ventilkegel mit der Gefahr eines Aufplatzens der Verbindung.In most known lightweight valves, the Aim to have the largest possible inside the valve Cavity to create a relatively large, unsupported Floor area formed towards the combustion chamber, which in operation - especially with minimized wall thicknesses - due to the combustion pressure is deformed. The through these deformations resulting displacements on the peripheral surface of the Valve seat contribute to premature wear of the Seat and additional stress on the valve. In addition, these deformations cause additional stress in the area of the joint between the valve plate and valve cone with the risk of the connection bursting open.

Eine Abstützung des Ventiltellers ist an sich aus der US 2,439,240 bekannt. Die dort dargestellte Lösung ist jedoch bedingt durch die Ausbildung der Abstützung herstellungstechnisch aufwendig.A support of the valve plate is in itself from the US 2,439,240 known. However, the solution presented there is due to the design of the support in terms of manufacturing technology consuming.

Ein weiterer Lösungsansatz ist aus der US 2,371,548 bekannt. Dort wird der Ventilteller mittig abgestützt, wobei die von der Abstützung aufgenommenen Kräfte über ein innerhalb des Schafts angeordnetes Rohrstück in das Schaftende eingeleitet werden. Diese Anordnung ist aufwendig und erzielt nur teilweise den erwünschten Effekt einer minimalen Verformung des Ventilkopfes unter Last. Insbesondere ergibt sich aufgrund des Kraftflusses über den Schaft für diesen Lösungsansatz bei gleichen geometrischen Verhältnissen sogar eine Verschlechterung der Verformungswerte verglichen mit z. B. dem aus der EP-OS 091 097 bekannten Ventil.Another approach is known from US 2,371,548. There the valve disk is supported in the middle, whereby the forces absorbed by the support via an inside of the shaft arranged tube piece in the shaft end be initiated. This arrangement is complex and achieved only partially the desired effect of a minimal Deformation of the valve head under load. In particular, results because of the flow of force over the shaft for this Solution even with the same geometric conditions a deterioration in the deformation values compared with z. B. the valve known from EP-OS 091 097.

Die Abstützung des Ventiltellers gegen den Schaft ist auch aus der DE 36 25 590 A bekannt. Nachteilig bei den dort offenbarten Lösungen ist jedoch, daß die Abstützung mit Hilfe eines zusätzlichen Zwischenstücks, das zwischen Ventilteller und Schaft fixiert ist, erfolgt und daß die Wandstärke des Ventiltellers sehr gering ist, sodaß Verformungen des Ventilkopfes zu erwarten sind.The valve disc is also supported against the stem known from DE 36 25 590 A. A disadvantage of those disclosed there Solutions is, however, that the support with the help an additional adapter between the valve disc and shaft is fixed, and that the wall thickness of the valve plate is very low, so that deformation of the Valve head are to be expected.

Die Erfindung beschäftigt sich daher mit dem Problem, bei einem Leichtbauventil auf einfache Art und Weise die Steifigkeit des Ventilkopfes zu erhöhen und die Herstellung des Ventils zu erleichtern.The invention is therefore concerned with the problem of a lightweight valve the rigidity in a simple way to increase the valve head and manufacture the To facilitate the valve.

Dieses Problem wird bei gattungsgemäßen Ventilen gelöst durch eine Ausbildung mit den kennzeichnenden Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.This problem is solved with generic valves through training with the distinctive features of Claim 1. Advantageous further developments are the subject of subclaims.

Mit erfindungsgemäßen Ventilen lassen sich Verformungswerte realisieren, die im Bereich der Werte von Ventilen mit einem Ventilkopf aus Vollmaterial liegen. Die Massenreduktion dieser Leichtbauventile beträgt mindestens 40 % im Vergleich mit Vollmaterial-Stahlventilen.Deformation values can be achieved with valves according to the invention realize that in the range of values of valves with a Valve head made of solid material. The mass reduction this lightweight valve is at least 40% in comparison with solid steel valves.

Dabei stellt die Ausführung nach Anspruch 1 eine weitgehende Abkehr von der bisher üblichen Bauform für Leichtbauventile dar, da der Ventilkegel nicht mehr einstückig mit dem Ventilschaft ist, sondern als Einzelteil hergestellt wird und der Ventilschaft sich - ggfs. mit vergrößertem Durchmesser - zum Ventilteller hin fortsetzt.The embodiment according to claim 1 represents an extensive Change from the usual design for lightweight valves because the valve cone is no longer integral with the Valve stem, but is manufactured as a single part and the valve stem itself - possibly with an enlarged diameter - continues to the valve plate.

Der Schaft ist vorzugsweise als gezogenes oder geschweißtes Rohr ausgeführt oder besteht aus Vollmaterial.The shaft is preferably drawn or welded Pipe made or made of solid material.

Die Fixierung des Ventilkegels am Schaft erfolgt vorzugsweise durch Löten oder Schweißen.The valve cone is preferably fixed to the stem by soldering or welding.

Unter 'radial innen' ist zu verstehen: entfernt vom Außendurchmesser des Ventiltellers.'Radially inside' means: away from the outside diameter of the valve plate.

Durch das erfindungsgemäße Ventil wird ein Leichtbauventil geschaffen, das auch noch bei dünnen Wandstärken und entsprechend geringem Gewicht eine hohe Steifigkeit aufweist.The valve according to the invention becomes a lightweight valve created that even with thin walls and accordingly low weight and high rigidity.

Die Erfindung beruht auf dem Grundgedanken, die auf den Ventilteller wirkenden Gaskräfte durch direkte Abstützung des Ventiltellers gegen den Schaft aufzunehmen. Durch die Abstützung des Ventiltellers gegen den Ventilschaft entsteht in Verbindung mit dem Ventilkegel ein biegesteifes Rotationsflächentragwerk mit etwa dreieckförmigem Querschnitt.The invention is based on the basic idea that on the Valve plate acting gas forces through direct support of the valve plate against the stem. Through the The valve disc is supported against the valve stem in connection with the valve cone a rigid Rotational surface structure with an approximately triangular cross-section.

Aus der US 4,834,036 ist ein Leichtbauventil bekannt, bei dem der Schaft bis in den Bereich des Ventiltellers durchgeht, bei dem Ventilkopf handelt es sich jedoch um ein leichtes, gegossenes oder geschmiedetes Vollmaterial auf Titanbasis wie Titanaluminid, sodaß dieses Ventil gattungsgemäß nicht zu den erfindungsgemäßen Hohlventilen gehört.A lightweight valve is known from US 4,834,036 which the shaft extends into the area of the valve plate, however, the valve head is a light, cast or forged solid material Titanium base like titanium aluminide, so this valve is generic does not belong to the hollow valves according to the invention.

Zwar ist außerdem noch ein Ventil aus der US 1,506,900 aus dem Jahr 1924 bekannt, das einen ähnlichen Aufbau aufweist, von dem sich die Erfindung allerdings durch ein unterschiedliches Wandstärkenverhältnis und eine andere Ausbildung bezüglich der Anbindung des Schaftendes an den Ventilteller unterscheidet. Die dort offenbarte relativ dünne Wandstärke des Ventiltellers verglichen mit dem Ventilkegel ist festigkeitsmäßig ungünstig, ebenso der Durchbruch im Ventilteller zur Aufnahme des Ventilschaftendes.A valve from US 1,506,900 is also still out known in 1924, which has a similar structure, from which the invention differs, however, by a different one Wall thickness ratio and another training regarding the connection of the shaft end to the valve disk different. The relatively thin one disclosed there Wall thickness of the valve disc compared to the valve cone is unfavorable in terms of strength, as is the breakthrough in Valve plate for receiving the valve stem end.

Die Erfindung wird im folgenden anhand von Ausführungsbeispielen näher erläutert. Es zeigt:

Fig. 1
ein erfindungsgemäßes Ventil im Querschnitt
Fig. 2
ein weiteres Ausführungsbeispiel, Ventilteller und Kegel zweistückig
Fig. 3
ein Ausführungsbeispiel mit einer Zentrierung für den Schaftfuß
Fig. 4
ein Ausführungsbeispiel mit einer am Ventilteller angeformten Abstützung.
The invention is explained in more detail below on the basis of exemplary embodiments. It shows:
Fig. 1
an inventive valve in cross section
Fig. 2
another embodiment, valve plate and cone in two pieces
Fig. 3
an embodiment with a centering for the shaft foot
Fig. 4
an embodiment with a molded on the valve plate support.

Ein Ventil 1 für einen Verbrennungsmotor besteht aus einem Schaft 2, einem nicht dargestellten Ventilfuß, einem trichterförmigen Ventilkegel 3 und einem einstückig mit dem Ventilkegel hergestellten Ventilteller 4. Der Durchmesser des Schafts ist auf Höhe des Ventilkegels 3 erweitert. An seinem unteren Ende ist der Schaft 2 mit dem Ventilteller 4 verschweißt. Der Ventilkegel 3 ist an seinem oberen Ende mit dem Schaft 2 verschweißt. Der Ventilkegel 3, der Ventilteller 4 und das beide verbindende untere, erweiterte Schaftende bilden gemeinsam ein biegesteifes Rotationsflächentragwerk. Die Wandstärke des Ventilkegels 3 ist kleiner als die Wandstärke des Ventiltellers 4.A valve 1 for an internal combustion engine consists of a Shaft 2, a valve base, not shown, a funnel-shaped Valve plug 3 and one piece with the valve plug manufactured valve disc 4. The diameter of the Shaft is expanded at the level of valve cone 3. On his the lower end is the stem 2 with the valve plate 4 welded. The valve cone 3 is at its upper end welded to the shaft 2. The valve cone 3, the valve disk 4 and the lower, connecting both, expanded Shaft ends together form a rigid rotational surface structure. The wall thickness of the valve cone 3 is smaller than the wall thickness of the valve plate 4.

Bei der in Fig. 2 dargestellten Ausführung sind Ventilteller 4 und Ventilkegel 3 nicht einstückig, sondern durch eine Schweißnaht miteinander verbunden. Der Schaft besteht aus Vollmaterial. Dabei kann der Schaft unterhalb der Schweißnaht auch einen kleineren Durchmesser aufweisen als im Bereich oberhalb der Schweißnaht.In the embodiment shown in Fig. 2 are valve plates 4 and valve cone 3 not in one piece, but by one Weld seam joined together. The shaft is there made of solid material. The shaft can be below the Weld also have a smaller diameter than in the area above the weld.

In Fig. 3 sind Ventilteller 4 und Ventilkegel 3 einstückig und im Ventilteller 4 ist eine Zentrierung für das Ende des Schafts 2 vorgesehen. Eine Schweißverbindung ist nur zwischen dem oberen Ende des Ventilkegels 3 und dem Schaft vorgesehen. Auch hier ist die Wandstärke des Ventiltellers 4 größer als die Wandstärke des Ventilkegels 3.In Fig. 3 valve plate 4 and valve cone 3 are in one piece and in the valve plate 4 is a centering for the end of Shaft 2 provided. A welded joint is only between the upper end of the valve plug 3 and the stem intended. Here too is the wall thickness of the valve plate 4 greater than the wall thickness of the valve plug 3.

In Fig. 4 ist ein Ventilteller 4 mit einer angeformten bundförmigen Abstützung gemäß Anspruch 5 dargestellt.In Fig. 4 is a valve plate 4 with a molded collar-shaped support according to claim 5 shown.

Claims (6)

  1. A lightweight valve, in particular for an internal combustion engine, having a shaft, a valve cone and a valve disk, whereby the valve cone and the valve disk together form a hollow space, and the wall thicknesses of the valve disk and the valve cone in relation to the diameter of the shaft form a ratio of less than 1:3,
    having the features
    a) the valve disk (4) is supported against the valve shaft (2) in an area on the inside radially,
    b) the valve cone (3) and the valve shaft (2) consist of two different components joined together, i.e., not in one piece,
    c) the valve (3) is secured on the valve shaft (2) at the upper end of the valve cone,
    characterized by the features
    d) the end of the valve shaft (2) is directly (without an intermediate piece) in contact with the valve disk and/or a collar which is formed in one piece with the valve disk, or the valve shaft (2) is designed in one piece with the valve disk (4),
    (e) the ratio of the wall thickness of the valve cone (3) to that of the valve disk (4) is less than 0.7,
    (f) the valve disk (4) does not have any passage through it to accommodate the end of the valve shaft.
  2. The lightweight valve according to Claim 1, characterized in that the shaft (2) is secured on the valve disk (4).
  3. The lightweight valve according to one of the preceding claims, characterized in that the shaft (2) has a larger diameter at the level of the valve cone (3) than in an area above the valve cone (3).
  4. The lightweight valve according to Claim 3, characterized in that the transition to the larger shaft diameter is shaped like a cone, so that a flush closure with the valve cone (3) is achieved when they are welded together.
  5. The lightweight valve according to Claim 1, characterized in that a support is integrally molded in one piece on the valve disk (4), so that the valve (4) is supported against the valve shaft (2).
  6. The lightweight valve according to one of the preceding claims, characterized in that the valve cone (3) and the valve disk (4) are designed in one piece.
EP99908830A 1998-02-03 1999-01-28 Lightweight valve Expired - Lifetime EP1053388B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03014001A EP1359292A1 (en) 1998-02-03 1999-01-28 Lightweight valve

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19804053A DE19804053A1 (en) 1998-02-03 1998-02-03 Lightweight valve
DE19804053 1998-02-03
PCT/EP1999/000561 WO1999040295A1 (en) 1998-02-03 1999-01-28 Lightweight valve

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP03014001.6 Division-Into 2003-06-21

Publications (2)

Publication Number Publication Date
EP1053388A1 EP1053388A1 (en) 2000-11-22
EP1053388B1 true EP1053388B1 (en) 2003-12-10

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP99908830A Expired - Lifetime EP1053388B1 (en) 1998-02-03 1999-01-28 Lightweight valve
EP03014001A Withdrawn EP1359292A1 (en) 1998-02-03 1999-01-28 Lightweight valve

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03014001A Withdrawn EP1359292A1 (en) 1998-02-03 1999-01-28 Lightweight valve

Country Status (7)

Country Link
US (1) US6354258B1 (en)
EP (2) EP1053388B1 (en)
JP (1) JP4282900B2 (en)
AR (1) AR018055A1 (en)
BR (1) BR9908554A (en)
DE (2) DE19804053A1 (en)
WO (1) WO1999040295A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013216188A1 (en) * 2013-08-14 2015-03-12 Mahle International Gmbh Light alloy inlet valve
DE102006061127B4 (en) * 2006-12-22 2016-07-14 Mahle International Gmbh Metallic lightweight valve of an internal combustion engine

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1193375B1 (en) * 2000-09-29 2002-06-05 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Engine valve
DE10256274A1 (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
DE10209770A1 (en) * 2002-03-05 2003-10-09 Daimler Chrysler Ag lightweight valve
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EP1053388A1 (en) 2000-11-22
US6354258B1 (en) 2002-03-12
JP2002502928A (en) 2002-01-29
BR9908554A (en) 2001-10-30
DE19804053A1 (en) 1999-08-05
EP1359292A1 (en) 2003-11-05
JP4282900B2 (en) 2009-06-24
WO1999040295A1 (en) 1999-08-12
AR018055A1 (en) 2001-10-31
DE59908022D1 (en) 2004-01-22

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