EP0172492B1 - Valve for an internal-combustion engine - Google Patents

Valve for an internal-combustion engine Download PDF

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Publication number
EP0172492B1
EP0172492B1 EP85109908A EP85109908A EP0172492B1 EP 0172492 B1 EP0172492 B1 EP 0172492B1 EP 85109908 A EP85109908 A EP 85109908A EP 85109908 A EP85109908 A EP 85109908A EP 0172492 B1 EP0172492 B1 EP 0172492B1
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EP
European Patent Office
Prior art keywords
valve
head
valve head
stem
valve stem
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
Application number
EP85109908A
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German (de)
French (fr)
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EP0172492A3 (en
EP0172492A2 (en
Inventor
Hugo Göbel
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz AG
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Filing date
Publication date
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Publication of EP0172492A2 publication Critical patent/EP0172492A2/en
Publication of EP0172492A3 publication Critical patent/EP0172492A3/en
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Publication of EP0172492B1 publication Critical patent/EP0172492B1/en
Expired 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
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials

Definitions

  • the invention relates to a valve for an internal combustion engine according to the preamble of the first claim.
  • Valves subject to high thermal loads in particular of supercharged reciprocating piston internal combustion engines, e.g.
  • the inlet and outlet valves used to control the gas exchange usually designed as plate valves, or those used to control the exhaust gas pressure of the blow-off valves used in front of an exhaust gas turbocharger tend to have a short service life due to hot corrosion, strength and hardness drop due to the increasingly sought-after performance increases in reciprocating piston internal combustion engines.
  • such valves show a poor sealing behavior, which is primarily due to the hot corrosion in the area of the valve seat surfaces.
  • FR-A-2 532 360 describes a valve according to the preamble of the first claim, wherein the valve stem is connected to the valve disk by a press fit. With such a press fit, there is the possibility that the valve disk loosens or detaches from the valve stem during operation of the internal combustion engine.
  • FR-A-2 158654 describes a valve for an internal combustion engine which is liquid-cooled and has a valve stem which is connected to the valve plate by a screw connection. Furthermore, the valve stem is connected to the valve plate by hard soldering by means of a hard solder filling the spaces at the connection point and in particular between the threads.
  • This design has the disadvantage that both the valve stem and the valve plate must each be provided with a thread or counter thread, which complicates the manufacturing process and thus contributes to higher costs. Furthermore, the replacement of a worn valve plate is made difficult or impossible.
  • the invention has for its object to improve a valve of the type mentioned in such a way that a flawless connection between the valve stem and valve plate is ensured with the least possible manufacturing and assembly effort.
  • the all-round collar serves as a limiting element.
  • the annular groove in the valve stem adjoining the circumferential collar which can be filled with an end region of the valve plate on the valve stem side, ensures that the valve stem and valve plate can be connected to one another in a simple manner by inserting the valve stem into the receiving space of the valve plate. If the valve disk is to be replaced, this is easily possible since it can simply be pulled off the valve stem.
  • valve stem and valve plate can be connected to one another in a simple manner by inserting the valve stem into the receiving space of the valve plate.
  • the valve stem extends on the valve plate side to the bottom of the valve plate, and the circumferential collar serves as a limiting element at the end of the valve plate on the valve stem side.
  • the valve according to the invention also ensures that the valve temperature is evened out, in that heat is dissipated from the valve plate bottom and the valve seat surface of the valve plate via the heat-conducting valve stem and e.g. is forwarded to the valve stem guides of the cylinder head of the internal combustion engine.
  • the invention therefore results in a valve that is highly suitable for use in supercharged internal combustion engines operated with residual oils (heavy oils).
  • 1 is an exhaust valve according to the invention 1, which is shown in the embodiment in FIG. 1 in its arrangement in the exhaust port 2 of the cylinder head 3 of an internal combustion engine (not shown in further detail).
  • the outlet valve 1 consists of a valve plate 4 and a valve stem 5, both the valve plate 4 and the valve stem 5 having been manufactured completely separately in their outer shape before assembly.
  • the valve disc 4 consists of a high-temperature, corrosion-resistant material such as X45 CrSi93, whereas the valve stem is made of an extremely thermally conductive Kupffer-Beryllium-Bronze alloy.
  • valve seat surface areas 4a of the exhaust valve 1 interact with a valve seat ring 6 arranged in the cylinder head 3 of the internal combustion engine. It should be noted that, of course, the valve seat areas can be reinforced with an additional insert body.
  • the valve plate 4 has a central, essentially cylindrical receiving space 8 which extends close to the valve plate bottom 4b.
  • the end area 7 of the valve stem 5 on the valve plate side is delimited by a circumferential collar 9, to which a circumferential annular groove 10 adjoins below.
  • valve stem 5 To connect the valve stem 5 to the valve plate 4, the cylindrically shaped end region 7 is inserted into the receiving space 8, the end face of the valve stem reaching as far as the bottom of the valve plate, ie in contact with the hottest areas of the valve plate 4. After screwing the valve stem 5 into the receiving space 8, the valve stem end 4c of the valve disc 4 is rolled into the annular groove 10, so that the valve stem 5 is held securely in the receiving space 7 and, moreover, the valve stem 5 is in a heat-conducting connection with the valve disc in a form-fitting manner .

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

Description

Die Erfindung betrifft ein Ventil für eine Brennkraftmaschine nach dem Oberbegriff des ersten Anspruchs. Thermisch hochbelastete Ventile insbesondere von aufgeladenen Hubkolbenbrennkraftmaschinen, wie z.B. die zur Steuerung des Ladungswechsels eingesetzten, üblicherweise als Tellerventile ausgebildeten Ein- und Auslassventile oder aber die zur Steuerung des Abgasdruckes der vor einem Abgasturbolader eingesetzten Abblaseventile neigen aufgrund der in zunehmendem Masse angestrebten Leistungssteigerungen bei Hubkolbenbrennkraftmaschinen zu geringen Standzeiten infolge Heisskorrosion, Festigkeits- und Härteabfall. Daneben zeigen derartige Ventile mit zunehmender Betriebsdauer ein vornehmlich auf die Heisskorrosion im Bereich der Ventilsitzflächen zurückführendes mangelhaftes Dichtverhalten. Insbesondere bei den Auslassventilen von Brennkraftmaschinen, die mit Rückstandsölen (Schwerölen) betrieben werden, ist ein mangelhaftes Dichtverhalten schon nach relativ kurzen Einsatzzeiten des Ventils zu beobachten. Daneben können Taupunktunterschreitungen schwefelhaltiger Abgase im Bereich der Ventilführung Kaltkorrosionen am Ventilschaft bewirken; ein Mangel, der ebenfalls verstärkt bei mit Rückstandsölen betriebenen aufgeladenen Hubkolbenbrennkraftmaschinen auftritt.The invention relates to a valve for an internal combustion engine according to the preamble of the first claim. Valves subject to high thermal loads, in particular of supercharged reciprocating piston internal combustion engines, e.g. The inlet and outlet valves used to control the gas exchange, usually designed as plate valves, or those used to control the exhaust gas pressure of the blow-off valves used in front of an exhaust gas turbocharger tend to have a short service life due to hot corrosion, strength and hardness drop due to the increasingly sought-after performance increases in reciprocating piston internal combustion engines. In addition, with increasing operating time, such valves show a poor sealing behavior, which is primarily due to the hot corrosion in the area of the valve seat surfaces. In the exhaust valves of internal combustion engines in particular, which are operated with residual oils (heavy oils), poor sealing behavior can be observed even after the valve has been used for a relatively short time. In addition, falling below the dew point of sulfur-containing exhaust gases in the area of the valve guide can cause cold corrosion on the valve stem; a deficiency that also occurs increasingly in the case of supercharged reciprocating piston internal combustion engines operated with residual oils.

Die FR-A-2 532 360 beschreibt ein Ventil nach dem Oberbegriff des ersten Anspruchs, wobei der Ventilschaft mit dem Ventilteller durch einen Pressverband miteinander verbunden ist. Bei einem derartigen Pressverband besteht die Mög- !ichkeit, dass sich der Ventilteller während des Betriebes der Brennkraftmaschine vom Ventilschaft lockert bzw. löst.FR-A-2 532 360 describes a valve according to the preamble of the first claim, wherein the valve stem is connected to the valve disk by a press fit. With such a press fit, there is the possibility that the valve disk loosens or detaches from the valve stem during operation of the internal combustion engine.

In der FR-A-2 158654 ist ein Ventil für eine Brennkraftmaschine beschrieben, welches flüssigkeitsgekühlt ist und einen Ventilschaft aufweist, der mit dem Ventilteller durch eine Verschraubung verbunden ist. Desweiteren ist der Ventilschaft mit dem Ventilteller durch Hartlöten vermittels eines die Zwischenräume an der Verbindungsstelle und insbesondere zwischen den Gewinden ausfüllenden Hartlots verbunden. Diese Ausbildung hat den Nachteil, dass sowohl der Ventilschaft als auch der Ventilteller jeweils mit einem Gewinde bzw. Gegengewinde versehen werden müssen, welches den Fertigungsprozess erschwert und damit zu grösseren Kosten beiträgt. Ferner ist das Auswechseln eines verschlissenen Ventiltellers erschwert bzw. unmöglich gemacht.FR-A-2 158654 describes a valve for an internal combustion engine which is liquid-cooled and has a valve stem which is connected to the valve plate by a screw connection. Furthermore, the valve stem is connected to the valve plate by hard soldering by means of a hard solder filling the spaces at the connection point and in particular between the threads. This design has the disadvantage that both the valve stem and the valve plate must each be provided with a thread or counter thread, which complicates the manufacturing process and thus contributes to higher costs. Furthermore, the replacement of a worn valve plate is made difficult or impossible.

Der Erfindung liegt die Aufgabe zugrunde, ein Ventil der eingangs genannten Art dahingehend zu verbessern, dass mit möglichst geringem Fertigungs- und Montageaufwand eine einwandfreie Verbindung zwischen Ventilschaft und Ventilteller gewährleistet ist.The invention has for its object to improve a valve of the type mentioned in such a way that a flawless connection between the valve stem and valve plate is ensured with the least possible manufacturing and assembly effort.

Diese Aufgabe wird durch die erfindungsgemässen Merkmale des Anspruchs 1 gelöst. Der umlaufende Kragen dient als Begrenzungselement. Durch die an den umlaufenden Kragen angrenzende Ringnut im Ventilschaft, die mit einem ventilschaftseitigen Endbereich des Ventiltellers ausfüllbar ist, ist sichergestellt, dass Ventilschaft und Ventilteller auf einfache Weise durch Einsetzen des Ventilschaftes in den Aufnahmeraum des Ventiltellers unverrückbar miteinander verbindbar sind. Soll der Ventilteller ausgetauscht werden, so ist dies leicht möglich, da er einfach vom Ventilschaft abgezogen werden kann.This object is achieved by the features of claim 1 according to the invention. The all-round collar serves as a limiting element. The annular groove in the valve stem adjoining the circumferential collar, which can be filled with an end region of the valve plate on the valve stem side, ensures that the valve stem and valve plate can be connected to one another in a simple manner by inserting the valve stem into the receiving space of the valve plate. If the valve disk is to be replaced, this is easily possible since it can simply be pulled off the valve stem.

Die zweistückige Ausbildung und der jeweils in seiner äusseren Formgebung separat herstellbare Ventilteller und Ventilschaft des Ventiles ermöglichen es, dass selbst geometrisch komplizierte Formgebungen der Kontur z.B. des Ventiltellers bei der Herstellung in optimaler Weise Berücksichtigung finden können. Daneben ist sichergestellt, dass Ventilschaft und Ventilteller auf einfache Weise durch Einsetzen des Ventilschaftes in den Aufnahmeraum des Ventiltellers miteinander zu verbinden sind. Dabei reicht der Ventilschaft ventiltellerseitig bis an den Ventiltellerboden, und der umlaufende Kragen dient an dem ventilschaftseitigen Ende des Ventiltellers als Begrenzungselement. Durch die Wärmeleitfähigkeit der den Ventiltellerboden berührenden Stirnseite und der Umfangsbereiche des Ventilschaftes ist bei dem Ventil nach der Erfindung darübernhinaus für eine Vergleichsmässigung der Ventiltemperatur Sorge getragen, indem über den wärmeleitenden Ventilschaft vom Ventiltellerboden und der Ventilsitzfläche des Ventiltellers Wärme abgeführt und z.B. an die Ventilschaftführungen des Zylinderkopfes der Brennkraftmaschine weitergeleitet wird. Hierdurch ist der Gefahr von Heisskorrosion im Ventilteller (Ventiltellerboden, Ventilsitzflächenbereich) und der Gefahr von Kaltkorrosion im Bereich der Ventilschaftführung bzw. des Ventilschaftes wirksam entgegengetreten, da z.B. Taupunktunterschreitungen schwefelhaltiger Abgase im Bereich der Ventilschaftführung aufgrund der Temperaturvergleichmässigung weitgehend ausgeschlossen sind. Insgesamt ergibt sich daher durch die Erfindung ein Ventil, das in hohem Masse geeignet ist, in mit Rückstandsölen (Schwerölen) betriebenen aufgeladenen Brennkraftmaschinen Verwendung zu finden.The two-piece design and the valve plate and valve stem of the valve, each of which can be produced separately in its outer shape, make it possible that even geometrically complicated shapes of the contour e.g. of the valve plate can be optimally taken into account during manufacture. In addition, it is ensured that the valve stem and valve plate can be connected to one another in a simple manner by inserting the valve stem into the receiving space of the valve plate. The valve stem extends on the valve plate side to the bottom of the valve plate, and the circumferential collar serves as a limiting element at the end of the valve plate on the valve stem side. Due to the thermal conductivity of the end face touching the valve plate bottom and the circumferential areas of the valve stem, the valve according to the invention also ensures that the valve temperature is evened out, in that heat is dissipated from the valve plate bottom and the valve seat surface of the valve plate via the heat-conducting valve stem and e.g. is forwarded to the valve stem guides of the cylinder head of the internal combustion engine. This effectively counteracts the risk of hot corrosion in the valve disc (valve disc base, valve seat area) and the risk of cold corrosion in the area of the valve stem guide or valve stem, e.g. Below the dew point of sulfur-containing exhaust gases in the area of the valve stem guide are largely excluded due to the temperature uniformity. Overall, the invention therefore results in a valve that is highly suitable for use in supercharged internal combustion engines operated with residual oils (heavy oils).

Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Zeichnungsbeschreibung, in denen zwei Ausführungsbeispiele der Erfindung vereinfacht dargestellt sind. Es zeigen:

  • Fig. 1 in einer Schnittdarstellung ein in einem Auslasskanal einer Brennkraftmaschine angeordnetes Ventil;
  • Fig. 2 in einer schematischen Schnittdarstellung eine alternative Ausbildungsmöglichkeit des Ventils nach dem Ausführungsbeispiel von Fig. 1.
Further advantageous refinements of the invention result from the subclaims and the following description of the drawings, in which two exemplary embodiments of the invention are shown in simplified form. Show it:
  • 1 shows a sectional view of a valve arranged in an outlet duct of an internal combustion engine;
  • FIG. 2 shows a schematic sectional illustration of an alternative embodiment of the valve according to the exemplary embodiment from FIG. 1.

In den Fig. sind grundsätzlich, soweit im einzelnen dargestellt, gleichwirkende Elemente mit gleichen Bezugsziffern versehen. Mit 1 ist allgemein ein erfindungsgemässes Auslassventil bezeichnet, das in dem Ausführungsbeispiel nach Fig. 1 in seiner Anordnung im Auslasskanal 2 des im einzelnen nicht weiter dargestellten Zylinderkopfes 3 einer Brennkraftmaschine dargestellt ist. Das Auslassventil 1 besteht aus einem Ventilteller 4 und einem Ventilschaft 5, wobei sowohl der Ventilteller 4 als auch der Ventilschaft 5 jeweils vor der Montage in ihrer äusseren Formgebung vollständig separat hergestellt worden sind. Der Ventilteller 4 besteht aus einem hochwarmfesten, korrosionsbeständigen Werkstoff wie beispielsweise X45 CrSi93, wohingegen der Ventilschaft aus einer äusserst wärmeleitfähigen Kupffer-Beryllium-Bronze-Legierung hergestellt ist. Die Ventilsitzflächenbereiche 4a des Auslassventils 1 wirken mit einem im Zylinderkopf 3 der Brennkraftmaschine angeordneten Ventilsitzring 6 zusammen. Es ist darauf hinzuweisen, dass selbstversändlich z.B. die Ventilsitzflächenbereiche mit einem zusätzlichen Einsatzkörper armiert sein können. Zur Aufnahme des ventiltellerseitigen Endbereiches 7 des Ventilschaftes 5 weist der Ventilteller 4 einen zentralen, im wesentlichen zylindrisch ausgebildeten Aufnahmeraum 8 auf, der bis nahe an den Ventiltellerboden 4b reicht. Der ventiltellerseitige Endbereich 7 des Ventilschaftes 5 wird durch einen umlaufenden Kragen 9 begrenzt, an den sich unterhalb eine umlaufende Ringnut 10 anschliesst. Zur Verbindung des Ventilschaftes 5 mit dem Ventilteller 4 wird der zylindrisch ausgebildete Endbereich 7 in den Aufnahmeraum 8 eingesetzt, wobei die Stirnfläche des Ventilschaftes bis an den Ventiltellerboden reicht, d.h. mit den heissesten Bereichen des Ventiltellers 4 in Berührung steht. Das ventilschaftseitige Ende 4c des Ventiltellers 4 ist nach dem Einschrauben des Ventilschaftes 5 in den Aufnahmeraum 8 in die Ringnut 10 eingewalzt, so dass der Ventilschaft 5 sicher in dem Aufnahmeraum 7 gehalten ist und darüber hinaus der Ventilschaft 5 formschlüssig mit dem Ventilteller in wärmeleitender Verbindung steht.In the figures, elements with the same effect are generally provided with the same reference numbers, as far as they are shown in detail. 1 is an exhaust valve according to the invention 1, which is shown in the embodiment in FIG. 1 in its arrangement in the exhaust port 2 of the cylinder head 3 of an internal combustion engine (not shown in further detail). The outlet valve 1 consists of a valve plate 4 and a valve stem 5, both the valve plate 4 and the valve stem 5 having been manufactured completely separately in their outer shape before assembly. The valve disc 4 consists of a high-temperature, corrosion-resistant material such as X45 CrSi93, whereas the valve stem is made of an extremely thermally conductive Kupffer-Beryllium-Bronze alloy. The valve seat surface areas 4a of the exhaust valve 1 interact with a valve seat ring 6 arranged in the cylinder head 3 of the internal combustion engine. It should be noted that, of course, the valve seat areas can be reinforced with an additional insert body. To accommodate the end area 7 of the valve stem 5 on the valve plate side, the valve plate 4 has a central, essentially cylindrical receiving space 8 which extends close to the valve plate bottom 4b. The end area 7 of the valve stem 5 on the valve plate side is delimited by a circumferential collar 9, to which a circumferential annular groove 10 adjoins below. To connect the valve stem 5 to the valve plate 4, the cylindrically shaped end region 7 is inserted into the receiving space 8, the end face of the valve stem reaching as far as the bottom of the valve plate, ie in contact with the hottest areas of the valve plate 4. After screwing the valve stem 5 into the receiving space 8, the valve stem end 4c of the valve disc 4 is rolled into the annular groove 10, so that the valve stem 5 is held securely in the receiving space 7 and, moreover, the valve stem 5 is in a heat-conducting connection with the valve disc in a form-fitting manner .

Wie in dem Ausführungsbeispiel nach Fig. 1 durch die durchgezogenen Pfeile angedeutet, findet insbesondere im thermisch hochbeanspruchten Ventiltellerboden ein stetiger Wärmefluss durch den wärmeleitenden Ventilschaft 5 in die den Ventilschaft führende Ventilschaftführung 11 bzw. den Zylinderkopf 3 statt. Insgesamt ist daher die Ventiltemperatur vergleichmässigt, so dass der Gefahr von Heisskorrosion im Ventiltellerbereich und der Gefahr von Kaltkorrosion im Ventilschaftbereich wirksam entgegengetreten ist.As indicated by the solid arrows in the exemplary embodiment according to FIG. 1, there is a constant heat flow through the heat-conducting valve stem 5 into the valve stem guide 11 or the cylinder head 3, particularly in the thermally highly stressed valve plate base. Overall, the valve temperature is therefore even, so that the risk of hot corrosion in the valve disc area and the risk of cold corrosion in the valve stem area have been effectively counteracted.

Claims (5)

1. A valve (1) for an internal combustion engine, especially an outlet and/or blow-off valve for a supercharged reciprocating-piston internal combustion engine, the valve comprising a valve head (4) made of a high-temperature and corrosion-resistant material and a valve stem (5) made of a material different from that of the valve head (4), in which the valve stem's (5) end portion (7) in contact with the valve head (4) is arranged in a receptacle (8) centrally disposed in the valve head (4) and, preferably, extending into the vicinity of the valve head's bottom (4b), in which the valve stem (5) and the valve head (4) are designed, as far as their respective external shape essential for meeting operational requirements is concerned, to be manufactured as separate components, in which the shape of the receptacle (8) and at least that of the end portion (7) of the valve stem (5) in contact with the valve head is a substantially cylindrical one, and in which at least the valve stem's (5) end face facing the valve head's bottom (4b) and the stem's peripheral regions consist of a heat-conducting material, characterized in that the valve stem (5) is provided with a continuous collar (9) which terminates the end portion (7) in contact with the valve head and which, by virtue of its form-locking abutment on the valve head (4), communicates heat-conduc- tingly therewith, that the end portion (7) in contact with the valve head is provided with an annular groove (10) bordering on the continuous collar (9), and in that the annular groove is occupied entirely bay the valve head's (4) end portion (4c) remote from the head's bottom.
2. A valve according to claim 1, characterized in that the valve head's (4) end portin (4c) remote from its bottom is rolled into the annular groove (10).
3. A valve according to claim 1 or claim 2, characterized in that the valve stem is made of a copper-beryllium-bronze alloy.
4. A valve according to any of the claims 1 to 3, characterized in that the end portion (7) in contact with the valve head and /or the continuous collar (9) of the valve stem (5) is, or are, soldered to the valve head (4).
5. A valve according to any of the claims 1 to 4, characterized in that the valve stem's (5) end portion (7) in contact with the vlave head (4) is screwable into the receptacle (8) thereof.
EP85109908A 1984-08-08 1985-08-07 Valve for an internal-combustion engine Expired EP0172492B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3429173 1984-08-08
DE19843429173 DE3429173A1 (en) 1984-08-08 1984-08-08 VALVE FOR AN INTERNAL COMBUSTION ENGINE

Publications (3)

Publication Number Publication Date
EP0172492A2 EP0172492A2 (en) 1986-02-26
EP0172492A3 EP0172492A3 (en) 1987-02-25
EP0172492B1 true EP0172492B1 (en) 1988-12-07

Family

ID=6242590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109908A Expired EP0172492B1 (en) 1984-08-08 1985-08-07 Valve for an internal-combustion engine

Country Status (2)

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DE (2) DE3429173A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3613299A1 (en) * 1986-04-19 1987-10-22 Opel Adam Ag Valve, especially exhaust valve for internal combustion engines
DE3914262A1 (en) * 1989-04-29 1990-10-31 Daimler Benz Ag Valve for internal combustion engine - has metal valve head attached to push rod made of fibre reinforced plastics
CN105221203B (en) * 2015-10-14 2017-12-15 济南大学 A kind of high-temperature resistance combined type valve attachment means

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US881191A (en) * 1906-04-23 1908-03-10 Detroit Steam Engine Company Valve.
GB123416A (en) * 1918-02-28 1919-02-27 John Buchanan Composite Valve for all Classes of Internal Combustion Engines.
US1547125A (en) * 1921-01-10 1925-07-21 Gen Motors Corp Valve manufacture
US1619901A (en) * 1922-02-23 1927-03-08 Oliver Typewriter Co Method of making two-piece valves
DE522326C (en) * 1928-05-09 1931-04-07 Meccanica G Zanzi Off Valve for internal combustion engines
US2057858A (en) * 1931-03-09 1936-10-20 Thompson Prod Inc Valve construction
GB531986A (en) * 1939-08-10 1941-01-15 Frank Ernest Bullock Improvements in and in the manufacture of poppet valves
US2360795A (en) * 1943-04-24 1944-10-17 Rich Mfg Corp Valve
DE861172C (en) * 1950-05-04 1952-12-29 Entwicklungsinstitut Fuer Moto Valve subject to the action of high temperatures, especially in internal combustion engines
US3583672A (en) * 1968-12-10 1971-06-08 Federal Mogul Corp Composite high-temperature valve and method of making the same
FR2158654A5 (en) * 1971-10-27 1973-06-15 Semt
JPS5623507A (en) * 1979-08-02 1981-03-05 Toshiba Corp Exhaust valve
US4433652A (en) * 1982-06-11 1984-02-28 Standard Oil Company Composite valve and process
DE3233392A1 (en) * 1982-08-31 1984-03-01 Gebrüder Sulzer AG, 8401 Winterthur Disc valve for a gas-changing valve

Also Published As

Publication number Publication date
DE3566705D1 (en) 1989-01-12
EP0172492A3 (en) 1987-02-25
EP0172492A2 (en) 1986-02-26
DE3429173A1 (en) 1986-02-20

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