EP1193375A1 - Ventil für Brennkraftmaschinen - Google Patents
Ventil für Brennkraftmaschinen Download PDFInfo
- Publication number
- EP1193375A1 EP1193375A1 EP00121412A EP00121412A EP1193375A1 EP 1193375 A1 EP1193375 A1 EP 1193375A1 EP 00121412 A EP00121412 A EP 00121412A EP 00121412 A EP00121412 A EP 00121412A EP 1193375 A1 EP1193375 A1 EP 1193375A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- cone
- recess
- valve plate
- plate
- 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
Links
Images
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
- F01L3/12—Cooling of valves
- F01L3/14—Cooling of valves by means of a liquid or solid coolant, e.g. sodium, in a closed chamber in a valve
-
- 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 valve, in particular for internal combustion engines, according to the preamble of claim 1.
- valves inside can coke very easily, resulting in a drastic deterioration in performance and Emissions behavior leads.
- a valve with liquid cooling is known from US 4169488, in which the Valve stem is hollow on the inside with an inner second tube, with coolant through the valve stem up to the valve plug and back to be led.
- a valve is only suitable for engines with very large valves, and because such a valve is complicated, it is accordingly also complex and expensive to manufacture.
- US 5771852 discloses a valve with a hollow valve cone and valve stem, which are both made in one piece from a hollow tube.
- the Transition from the valve stem to the valve plug are in the direction of the valve axis elongated or curved impressions arranged, on the one hand, the Increase the strength of the valve, on the other hand to swirl the Flow and thus lead to better heat dissipation.
- the disadvantage here is that the heat input into the valve cone through Valve plate is not prevented and the valve cone is therefore very high Experienced heat load, which then dissipated only in the area of the indentations becomes.
- the object of the invention is therefore to design a valve so that it is easy to manufacture and in the area of the valve stem and valve cone remains cool during operation so that the lubricating oil located there does not carbonized.
- valve plate one has a smaller diameter than the recess in the valve cone, that between the recess in the valve cone and the valve plate edge Isolation gap is created.
- valve cone By direct heat conduction from the valve plate to the valve cone through the Isolation gap is interrupted, the valve cone is only a fraction of the Heat applied with a firm, better heat-conducting connection to the valve plate would act on him. Because the one located directly in the combustion chamber The surface of the valve cone represents only a narrow circular ring heat introduced into the valve cone via this surface slightly above the Valve seat can be removed.
- valve plate is exposed to the full heat load because of the constructively necessary contact with the valve cone only slight Amounts of heat are dissipated.
- valve provides that in the recess of the valve cone is arranged a radially circumferential shoulder on which the Support the valve plate in the direction of the valve axis.
- a paragraph makes sense to the valve plate resulting from the combustion pressure introduce the pressure forces acting on the valve cone into the valve seat.
- Such a paragraph also serves as a stop for the assembly of the valve the exact axial positioning of the valve plate relative to the valve plug.
- Valve cone and valve plate one or more joints on the circumference of the Valve plate edge.
- the contact surfaces caused by the joining between valve cone and valve disc and thus the occurring The additions are only to keep heat transfer as low as possible arranged in sections on the circumference of the valve plate edge.
- the Joining by caulking, by welding or by rolling on Valve cone. Other additions are possible as long as the Strength and low heat transfer requirements are met.
- Another advantageous embodiment provides that radial at the edge of the valve plate Centering cams are arranged. These serve to center the valve disc in the recess during assembly. By centering is a constant insulation gap on the entire circumference of the valve plate edge guaranteed.
- valve cone radial center cam be arranged. They do the same job there as with the arrangement on the edge of the valve plate. Another advantage is that in the case When the valve cone and valve disc are caulked, these cams act as Mortising material can be used.
- valve stem 2 The installation arrangement of the valve in the cylinder head 1 is shown in Figure 1.
- the Valve has valve stem 2, valve cone 3 and valve disk 4.
- the Valve stem 2 is slidably mounted in the valve stem guide 5. Goes down the valve stem 2 in the valve cone 3 over. Both are in the illustration made in one piece. It is not a hindrance to the concept presented if - here not shown - valve stem 2 and valve plug 3 in two or more parts are executed.
- the valve cone has a recess 3a in which the valve disk 4 is arranged centrally. Due to the smaller diameter of the Valve plates 4 with respect to the recess 3a result in the insulating gap 6 between the recess 3a and the valve plate edge 4a. Centering in radial direction takes place over several, on the circumference of the valve plate edge 4a arranged centering cam 7. By means of the annular shoulder 3b is the Valve plate 4 with respect to the valve cone 3 in the axial direction of the valve positioned. At the valve plate edge 4a there are several welding spots 8 on the circumference attached, which represent the joint between valve cone 3 and valve plate 4.
- valve plate 4 The heat transfer from the valve plate 4 to the valve cone 3 is due to the Contact areas between the two parts determined. Result in contact areas essentially at the welding points 8, at paragraph 3b of the valve cone 3 and on the centering cams 7. Otherwise there are valve cone 3 and valve plate 4 essentially through the insulating gap 6 and between the two parts forming cavity 9 thermally insulated.
- valve stem 2 and valve cone 3 experience additional cooling through the Fresh air supply in the intake duct 11.
- valve plate 4 In Figure 2, the view of the valve on the valve plate 4 is shown. Through the Centering cam 7, the valve plate is centered in the recess 3a of the Valve plug 3 arranged. The insulating gap 6 runs around the entire circumference Valve plate edge 4a. The three welding points 8 make the fixed connection between valve cone 3 and valve plate 4.
- FIG 3 it is shown how the valve plate 4 with the valve cone 3 through a Caulking 12 is added. This is done at regular intervals on the scope the recess 3a pressed material from the valve cone 3 onto the valve plate 4. Caulking at high temperature differences between is advantageous the two components. Because of the non-material connection of the two Components build voltage peaks with different thermal expansion by moving the two components against each other.
- valve plate 4 and valve cone 3 by rolling Material from the ring flange 3c are joined.
- the resulting ring bead 13 has similar advantageous properties with regard to thermal stresses as the caulking 12.
- Relationships used in subclaims point to the others Training the subject of the main claim by the features of respective subclaim; they are not a waiver of attainment an independent, objective protection for the characteristics of the to understand related subclaims.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Lift Valve (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
- Fig. 1
- einen Querschnitt durch die Anordnung eines erfindungsgemäßen Ventils im Zylinderkopf;
- Fig. 2
- die Ansicht eines Ventils von unten auf den Ventilteller;
- Fig. 3
- einen Querschnitt durch ein Ventil mit einer Verstemmung; und
- Fig. 4
- einen Querschnitt durch ein Ventil mit eingerolltem Ventilteller.
Claims (9)
- Ventil, vorzugsweise für Brennkraftmaschinen, mit einem Ventilschaft, einem Ventilkegel und einem Ventilteller, wobei der Ventilkegel eine Ausnehmung zur Aufnahme des Ventiltellers aufweist, und Ventilkegel und Ventilteller gemeinsam einen Hohlraum bilden,
dadurch gekennzeichnet, daß
der Ventilteller einen geringeren Durchmesser als die Ausnehmung im Ventilkegel aufweist derart, daß zwischen der Ausnehmung im Ventilkegel und dem Ventiltellerrand ein Isolierspalt entsteht. - Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß
in der Ausnehmung des Ventilkegels ein radial umlaufender Absatz angeordnet ist, auf dem sich der Ventilteller in Richtung der Ventilachse abstützt. - Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß
in der Ausnehmung des Ventilkegels mehrere im Umfang verteilte Absätze angeordnet sind, auf denen sich der Ventilteller in Richtung der Ventilachse abstützt. - Ventil nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, daß
Ventilkegel und Ventilteller durch eine oder mehrere Fügungen am Umfang des Ventiltellerrandes verbunden sind. - Ventil nach Anspruch 4,
dadurch gekennzeichnet, daß
eine Fügung durch Verstemmen erfolgt. - Ventil nach Anspruch 4,
dadurch gekennzeichnet, daß
eine Fügung durch Schweißen erfolgt. - Ventil nach Anspruch 4,
dadurch gekennzeichnet, daß
eine Fügung durch Einrollen am Ventilkegel erfolgt. - Ventil nach einem der Anspruch 1 bis 7,
dadurch gekennzeichnet, daß
am Ventiltellerrand radiale Zentriernocken angeordnet sind. - Ventil nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet, daß
in der Ausnehmung des Ventilkegels radiale Zentriemocken angeordnet sind.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE50000201T DE50000201D1 (de) | 2000-09-29 | 2000-09-29 | Ventil für Brennkraftmaschinen |
EP00121412A EP1193375B1 (de) | 2000-09-29 | 2000-09-29 | Ventil für Brennkraftmaschinen |
JP2001294311A JP2002180811A (ja) | 2000-09-29 | 2001-09-26 | 内燃機関用バルブ |
US09/966,283 US6453867B1 (en) | 2000-09-29 | 2001-09-28 | Valve for combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00121412A EP1193375B1 (de) | 2000-09-29 | 2000-09-29 | Ventil für Brennkraftmaschinen |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1193375A1 true EP1193375A1 (de) | 2002-04-03 |
EP1193375B1 EP1193375B1 (de) | 2002-06-05 |
Family
ID=8169983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00121412A Expired - Lifetime EP1193375B1 (de) | 2000-09-29 | 2000-09-29 | Ventil für Brennkraftmaschinen |
Country Status (4)
Country | Link |
---|---|
US (1) | US6453867B1 (de) |
EP (1) | EP1193375B1 (de) |
JP (1) | JP2002180811A (de) |
DE (1) | DE50000201D1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10204122C1 (de) * | 2002-02-01 | 2003-05-08 | Daimler Chrysler Ag | Gebautes Ventil für Hubkolbenmaschinen und Verfahren zu dessen Herstellung |
WO2017050453A1 (de) * | 2015-09-22 | 2017-03-30 | Federal-Mogul Valvetrain Gmbh | Gekühltes ventil für verbrennungsmotoren mit entlastungsnut |
EP3450707A1 (de) * | 2017-08-30 | 2019-03-06 | MAN Truck & Bus AG | Ventil für einen verbrennungsmotor |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002285895A (ja) * | 2001-03-26 | 2002-10-03 | Nissan Motor Co Ltd | 内燃機関 |
DE10340320B4 (de) * | 2003-08-29 | 2005-11-17 | Daimlerchrysler Ag | Mehrteiliges zusammengesetztes Ventil für eine Brennkraftmaschine |
US20050154279A1 (en) * | 2003-12-31 | 2005-07-14 | Wenguang Li | System and method for registering an image with a representation of a probe |
JP2007285186A (ja) * | 2006-04-14 | 2007-11-01 | Suncall Corp | バルブアッセンブリ |
JP4771868B2 (ja) | 2006-06-06 | 2011-09-14 | サンコール株式会社 | 内燃機関用バルブ構造 |
US10760455B2 (en) | 2016-12-20 | 2020-09-01 | Caterpillar Inc. | Poppet valve for an internal combustion engine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169488A (en) | 1977-11-23 | 1979-10-02 | Caterpillar Tractor Co. | Cooled engine valve |
DE3625590A1 (de) * | 1986-07-29 | 1988-02-04 | Odilo Schwaiger | Ventile fuer brennkraftmaschinen |
US5771852A (en) | 1997-03-04 | 1998-06-30 | Trw Inc. | Poppet valve with embossed neck structure |
DE19804053A1 (de) * | 1998-02-03 | 1999-08-05 | Mwp Mahle J Wizemann Pleuco Gm | Leichtbauventil |
US6006713A (en) * | 1997-08-19 | 1999-12-28 | Trw Deutschi And Gmbh | Hollow valve for internal combustion engines |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1960331A1 (de) * | 1969-12-02 | 1971-06-03 | Porsche Kg | Kegelventil,insbesondere fuer Brennkraftmaschinen |
US4346870A (en) * | 1980-11-26 | 1982-08-31 | Eaton Corporation | Thermal barrier for poppet valve |
-
2000
- 2000-09-29 EP EP00121412A patent/EP1193375B1/de not_active Expired - Lifetime
- 2000-09-29 DE DE50000201T patent/DE50000201D1/de not_active Expired - Fee Related
-
2001
- 2001-09-26 JP JP2001294311A patent/JP2002180811A/ja active Pending
- 2001-09-28 US US09/966,283 patent/US6453867B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4169488A (en) | 1977-11-23 | 1979-10-02 | Caterpillar Tractor Co. | Cooled engine valve |
DE3625590A1 (de) * | 1986-07-29 | 1988-02-04 | Odilo Schwaiger | Ventile fuer brennkraftmaschinen |
US5771852A (en) | 1997-03-04 | 1998-06-30 | Trw Inc. | Poppet valve with embossed neck structure |
US6006713A (en) * | 1997-08-19 | 1999-12-28 | Trw Deutschi And Gmbh | Hollow valve for internal combustion engines |
DE19804053A1 (de) * | 1998-02-03 | 1999-08-05 | Mwp Mahle J Wizemann Pleuco Gm | Leichtbauventil |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10204122C1 (de) * | 2002-02-01 | 2003-05-08 | Daimler Chrysler Ag | Gebautes Ventil für Hubkolbenmaschinen und Verfahren zu dessen Herstellung |
WO2017050453A1 (de) * | 2015-09-22 | 2017-03-30 | Federal-Mogul Valvetrain Gmbh | Gekühltes ventil für verbrennungsmotoren mit entlastungsnut |
EP3450707A1 (de) * | 2017-08-30 | 2019-03-06 | MAN Truck & Bus AG | Ventil für einen verbrennungsmotor |
EP3450707B1 (de) | 2017-08-30 | 2020-09-30 | MAN Truck & Bus SE | Ventil für einen verbrennungsmotor |
US10934900B2 (en) | 2017-08-30 | 2021-03-02 | Man Truck & Bus Ag | Valve for an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
US6453867B1 (en) | 2002-09-24 |
DE50000201D1 (de) | 2002-07-11 |
US20020066432A1 (en) | 2002-06-06 |
EP1193375B1 (de) | 2002-06-05 |
JP2002180811A (ja) | 2002-06-26 |
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