DE19602720B4 - globe valve - Google Patents
globe valve Download PDFInfo
- Publication number
- DE19602720B4 DE19602720B4 DE1996102720 DE19602720A DE19602720B4 DE 19602720 B4 DE19602720 B4 DE 19602720B4 DE 1996102720 DE1996102720 DE 1996102720 DE 19602720 A DE19602720 A DE 19602720A DE 19602720 B4 DE19602720 B4 DE 19602720B4
- Authority
- DE
- Germany
- Prior art keywords
- valve
- seat
- crowned
- lifting
- radius
- 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
Links
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
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
Abstract
Hubventil (10) als Gaswechselventil für eine Brennkraftmaschine, das aus Keramik hergestellt ist, mit einem an einem Ventilschaft (12) angeformten Ventilteller (14), der mit einer ringförmigen Sitzfläche (16) versehen ist, wobei die Sitzfläche (16) ballig mit einem Radius (r) ausgeführt ist, dadurch gekennzeichnet, dass der Radius (r) der ballig ausgeführten Sitzfläche (16) etwa dem Durchmesser (D) des Ventiltellers (14) entspricht.globe valve (10) as a gas exchange valve for an internal combustion engine made of ceramic, with a on a valve stem (12) integrally formed valve disc (14) with an annular seat (16), wherein the seat surface (16) is crowned with a radius (r) accomplished characterized in that the radius (r) of the crowned seat (16) approximately corresponds to the diameter (D) of the valve disc (14).
Description
Die Erfindung betrifft ein Hubventil als Gaswechselventil für eine Brennkraftmaschine, gemäß dem Oberbegriff des Patentanspruches 1.The Invention relates to a lift valve as a gas exchange valve for an internal combustion engine, according to the generic term of claim 1.
Hubventile
der gattungsgemäßen Art
mit ballig ausgestalteten Sitzflächen
der Ventilteller zeigen beispielsweise die Druckschriften
Zur
Beherrschung der auftretenden Wechselspannungen innerhalb des Ventilschaftes
und des Ventiltellers ist der Druckschrift
Aufgabe der Erfindung ist es, ein Hubventil der gattungsgemäßen Art vorzuschlagen, das mit geringem zusätzlichem Aufwand eine erhöhte Betriebssicherheit besitzt.task The invention is a lifting valve of the generic type to propose that with little additional effort increased operational safety has.
Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind den weiteren Patentansprüchen entnehmbar.These Task is according to the invention with the characterizing features of claim 1. advantageous Further developments of the invention can be taken from the further claims.
Es wurde erfindungsgemäß erkannt, dass durch die ballig ausgeführte Sitzfläche des Ventiltellers des Hubventils, deren Radius etwa dem Durchmesser des Ventiltellers entspricht, eine weitgehend homogene Spannungsverteilung in den auftretendem Belastungsfällen (geöffnet – geschlossen) erreicht wird. Zu berücksichtigen ist dabei die Thermospannung, die permanent im Ventil wirkt, und die Überlagerung dieser Spannung mit der mechanisch induzierten Spannung durch den Verbrennungsdruck. Es werden in verstärktem Maße punktuelle Bereiche durch Kantenträger, Toleranzen, etc. vermieden, die im Betrieb starken Wechselspannungen bzw. Zug-Druckspannungen ausgesetzt sind, mit der Gefahr einer Rissinitiierung am Ventilteller. Vielmehr schafft die ballige Gestaltung der Sitzflächen eine Vergrößerung der punktuellen Krafteinleitungsstellen und damit eine Verringerung der spezifischen Belastung bzw. Flächenpressung und Wechselspannungen. Der definierte Radius r der balligen Sitzfläche stellt dabei sicher, daß unter Berücksichtigung fertigungstechnischer Toleranzen der Druckberührungspunkt zwischen Ventilsitzfläche und Ventilsitzring im Zylinderkopf in ausreichendem Abstand von den Ventilsitzkanten bleibt bzw. relativ mittig positioniert bleibt.It has been recognized according to the invention, that through the crowned running seat the valve disk of the lift valve whose radius is about the diameter corresponds to the valve plate, a largely homogeneous stress distribution in the occurring load cases (open closed) is reached. To be considered is the thermoelectric voltage that acts permanently in the valve, and the overlay this voltage with the mechanically induced voltage through the Combustion pressure. There are more selective areas through Edge carrier, Tolerances, etc. avoided the strong AC voltages during operation or Tensile compressive stresses are exposed, with the risk of crack initiation on the valve plate. Rather, the spherical design of the seats creates an enlargement of the punctual transfer of force and thus a reduction the specific load or surface pressure and alternating voltages. The defined radius r of the spherical seat ensures that under consideration manufacturing tolerances of the pressure contact point between the valve seat surface and Valve seat ring in the cylinder head at a sufficient distance from the valve seat edges remains or remains relatively centrally positioned.
Da die Biegebelastung des Ventiltellers in Folge des "Abrollens" der Sitzfläche auf dem Ventilsitzring etwas ansteigt, wird ferner vorgeschlagen, den Ventilteller durch eine ballige oder parabolische Gestaltung der den Brennraum zugewandten Seite des Ventiltellers zu verstärken. Insbesondere durch die parabolische Ausbildung des Ventiltellers wird eine opitmale Ausnutzung des Werkstoffes erreicht, wobei bis zur Randfaser des Ventiltellers eine relativ konstante Spannung wirkt.There the bending load of the valve disk due to the "rolling" of the seat on the valve seat ring rises slightly, it is also proposed that the Valve plate by a spherical or parabolic design of the to strengthen the combustion chamber facing side of the valve disk. Especially Due to the parabolic formation of the valve disk becomes an opitmale Utilization of the material achieved, with up to the edge of the fiber Valve plate a relatively constant tension acts.
Schließlich kann zumindest die ballige Sitzfläche im Quick-point-Schleifverfahren hergestellt sein, mit dem ballige Konturen fertigungstechnisch günstig schleifbar sind.Finally, can at least the crowned seat be produced in a quick-point grinding process, with the crowned Contours production technology favorable are sandable.
Ein Ausführungsbeispiel der Erfindung ist im folgenden mit weiteren Einzelheiten näher erläutert. Die anliegende Zeichnung zeigt ein Hubventil als Gaswechselventil einer Hubkolben-Brennkraftmaschine aus Siliziumnitrid mit balliger Sitzfläche und parabelförmig verstärktem Ventilteller.One embodiment The invention is explained in more detail below with further details. The attached drawing shows a globe valve as a gas exchange valve Reciprocating internal combustion engine made of silicon nitride with crowned seat and parabolic reinforced valve disc.
Das
dargestellte Hubventil
Die
Sitzfläche
Zur
Verstärkung
des Widerstandmomentes des Ventiltellers ist dessen den Brennraum
zugewandte Seite
Die
Sitzfläche
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996102720 DE19602720B4 (en) | 1996-01-26 | 1996-01-26 | globe valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1996102720 DE19602720B4 (en) | 1996-01-26 | 1996-01-26 | globe valve |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19602720A1 DE19602720A1 (en) | 1997-07-31 |
DE19602720B4 true DE19602720B4 (en) | 2008-03-27 |
Family
ID=7783716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1996102720 Expired - Lifetime DE19602720B4 (en) | 1996-01-26 | 1996-01-26 | globe valve |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19602720B4 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011090203A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Design of a valve closing body |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5036799B2 (en) * | 2009-12-21 | 2012-09-26 | 川崎重工業株式会社 | 4-stroke internal combustion engine |
CN105240072B (en) * | 2015-11-03 | 2017-07-14 | 济南大学 | A kind of exhaust valve attachment means of Electromagnetic Control |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1475948A1 (en) * | 1965-09-06 | 1969-04-24 | Von Arnim Sche Werke Gmbh | Control valve |
DE2545860A1 (en) * | 1975-10-14 | 1977-04-28 | Elsbett L | VALVE, IN PARTICULAR FOR PISTON INTERNAL COMBUSTION MACHINES, SUCH AS DIESEL ENGINES ETC. |
DE3302650A1 (en) * | 1983-01-27 | 1984-08-02 | Oliver Dipl.-Phys. 7148 Remseck Laing | COMBUSTION ENGINE VALVE |
DE3926431A1 (en) * | 1989-08-10 | 1991-02-14 | Audi Ag | Reciprocating valve, for IC engine cylinder head - has metal valve core assembled so that it exerts high compressive stress on ceramic valve body |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD42058A (en) * |
-
1996
- 1996-01-26 DE DE1996102720 patent/DE19602720B4/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1475948A1 (en) * | 1965-09-06 | 1969-04-24 | Von Arnim Sche Werke Gmbh | Control valve |
DE2545860A1 (en) * | 1975-10-14 | 1977-04-28 | Elsbett L | VALVE, IN PARTICULAR FOR PISTON INTERNAL COMBUSTION MACHINES, SUCH AS DIESEL ENGINES ETC. |
DE3302650A1 (en) * | 1983-01-27 | 1984-08-02 | Oliver Dipl.-Phys. 7148 Remseck Laing | COMBUSTION ENGINE VALVE |
DE3926431A1 (en) * | 1989-08-10 | 1991-02-14 | Audi Ag | Reciprocating valve, for IC engine cylinder head - has metal valve core assembled so that it exerts high compressive stress on ceramic valve body |
Non-Patent Citations (2)
Title |
---|
JP 58-178062 A., In: Patents Abstracts of Japan, M-270,Jan. 24,1984,Vol. 8,No. 16 |
JP 58178062 A., In: Patents Abstracts of Japan, M-270,Jan. 24,1984,Vol. 8,No. 16 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011090203A1 (en) * | 2011-12-30 | 2013-07-04 | Continental Automotive Gmbh | Design of a valve closing body |
Also Published As
Publication number | Publication date |
---|---|
DE19602720A1 (en) | 1997-07-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0494285A1 (en) | Assembly of a cylindrical body made to finished dimensions. | |
DE3222582A1 (en) | METHOD FOR PRODUCING A PISTON BOTTOM FOR A BUILTED PISTON | |
EP1552145B1 (en) | High pressure pump, especially for a fuel injection device in an internal combustion engine | |
DE3429169C1 (en) | Control element for the valve train of an internal combustion engine | |
DE3809702A1 (en) | COMPONENT IN THE VALVE CONTROL DRIVE OF AN INTERNAL COMBUSTION ENGINE | |
DE19602720B4 (en) | globe valve | |
EP3450707B2 (en) | Valve for a combustion engine | |
EP0056107A1 (en) | Cylinder head for an internal-combustion engine | |
EP1819921B1 (en) | Piston for a combustion engine | |
DE102010049904A1 (en) | Cylinder head assembly for an internal combustion engine and manufacturing process | |
EP1912754B1 (en) | Unmachined cylinder head casting, cast cylinder head for diesel internal combustion engines, and process for producing an unmachined cylinder head casting | |
WO2007036447A1 (en) | Lever pertaining to a shiftable cam follower device and method for producing the same | |
DE3902518A1 (en) | VALVE SEAL | |
DE102005058548A1 (en) | Valve drive for internal combustion (IC) engine, has one of two zero stroke cams axially longer than other cam and contacted to gas intake valve actuator and radial bearing in one mode and to bearing only in other mode | |
EP1561057B1 (en) | Valve | |
EP1134406A3 (en) | Internal combustion engine with injection valves | |
DE3444901A1 (en) | Cam control | |
EP0629263B1 (en) | Ceramic engine valve | |
DE19849849A1 (en) | Fuel pressure regulator valve for combustion engine has contact surface of valve closure made of ceramic material | |
DE19721406A1 (en) | Valve seat | |
EP0172492A2 (en) | Valve for an internal-combustion engine | |
DE19911618A1 (en) | Procedure for making gas exchange valves, seat rings or cylinder heads with increased abrasion resistance of seating face for IC engines | |
AT414014B (en) | VALVE SEAT USE | |
DE10213693B4 (en) | Sealing arrangement for a plugged into a bore of a housing valve of an internal combustion engine | |
EP3507395B1 (en) | Wear resistant valve cotter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8120 | Willingness to grant licences paragraph 23 | ||
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
R071 | Expiry of right |