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WO1999005397A1 - Soupape a gaz a deux voies - Google Patents

Soupape a gaz a deux voies Download PDF

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Publication number
WO1999005397A1
WO1999005397A1 PCT/EP1998/004516 EP9804516W WO9905397A1 WO 1999005397 A1 WO1999005397 A1 WO 1999005397A1 EP 9804516 W EP9804516 W EP 9804516W WO 9905397 A1 WO9905397 A1 WO 9905397A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
gas exchange
tube
funnel
exchange valve
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.)
Ceased
Application number
PCT/EP1998/004516
Other languages
German (de)
English (en)
Inventor
Karl Heinz Leiber
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.)
LSP Innovative Automotive Systems GmbH
Original Assignee
LSP Innovative Automotive Systems 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
Priority to CNB988013932A priority Critical patent/CN1160750C/zh
Application filed by LSP Innovative Automotive Systems GmbH filed Critical LSP Innovative Automotive Systems GmbH
Priority to EP98943746A priority patent/EP0998622A1/fr
Publication of WO1999005397A1 publication Critical patent/WO1999005397A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F01L3/12—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
    • 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
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group

Definitions

  • the invention relates to a gas exchange valve with the features of the preamble of claim 1.
  • the invention has for its object to provide another solution to the problem.
  • materials with the lowest thermal expansion are used for the force-transmitting device, in particular for the rod or the tube.
  • Magnetic materials with high magnetostriction, which decrease with increasing temperature, are particularly suitable, which results in a decrease in volume, which largely compensates for a temperature-related expansion of the material. So with these materials in particular in the temperature range from -30 ° C to + 50 ° C Thermal expansion coefficient reached with low values down to 2 x 10 "6 K " 1 .
  • Materials with high magnetostriction are e.g. Nickel, iron-nickel as well as iron-cobalt and iron-aluminum alloys.
  • a Fe-Ni alloy known under the name Invar steel with 36% ⁇ 0.5% nickel content is particularly preferably used, in which the following values are not exceeded: C ⁇ 0.04%, Si ⁇ 0.2%, Mn ⁇ 0.4%, P ⁇ 0.01% and S ⁇ 0.015%.
  • this alloy has a particularly low thermal expansion with a minimum of about 2 x 10 "6 K " 1 .
  • Other nickel components are also possible at the expense of minimal thermal expansion, with alloys with 30-50% nickel the thermal expansion being less than 10 x 10 "6 K " 1 .
  • Steels with 42-55% nickel have thermal expansions that are comparable to that of glass.
  • the invention is of particular interest for electromagnetic valve actuations, because problems would arise there when realizing hydraulic valve lash compensation.
  • a cylinder head 7 is shown, in the gas channel 8, which acts as an outlet channel, fuel gases flow out, as indicated by an arrow 9.
  • the gas exchange valve designated overall by 10, has a valve plate 11 and a valve stem 12.
  • the valve plate 11 is directed against a combustion chamber 13. It has a plate part 14, the edge of which is designated 15.
  • On the Edge 15 has a heat shield 16, preferably a ceramic plate.
  • the heat shield 16 is attached to the plate part 14.
  • the valve stem 12 has a tube 30.
  • a first discharge funnel 25 which is preferably made of aluminum sheet, encloses the tube 30 with its upper, tapered end.
  • the first discharge funnel 25 is fastened to the plate part 24 at its lower, enlarged end.
  • the first discharge funnel 25 is only to be understood as an option; it can also be omitted. It serves for better cooling and heat dissipation of the valve plate 1.
  • a second, outer discharge funnel 26 which is made of a ceramic material.
  • the second discharge funnel 26 surrounds the valve stem 12 with its upper, tapered end. H. in the illustrated embodiment, the pipe 30.
  • the lower, widened end of the second discharge funnel 26 is connected to the edge 15 of the plate part 14, for example by flanging, as indicated at 27.
  • an inner space 28 remains between it and the tube 30 or the plate part 14 and specifically its inner membrane 20.
  • an Invar rod 31 is provided in the interior of the tube 30, which causes the force transmission from the part 34 to the membrane 20.
  • This rod is supported by a ring 35 on the outer tube as kink protection.
  • the tube 30 is only a protective tube.
  • Sodium 32 is filled between the Invar rod 31 and the tube 20 for heat dissipation.
  • Other alkali metals are also possible.
  • the Invar rod is shrunk into both the part 34 and the membrane 20. Other connection techniques are conceivable. It can be seen that the tube 30 is displaceable relative to the part 34. It contributes nothing to the power transmission and, when heated, shifts relative to part 34.
  • Suitable materials for the force-transmitting part are generally materials with high magnetostriction, which decreases with increasing temperature, resulting in a A decrease in volume results, which largely compensates for a temperature-related expansion of the material.
  • Materials with high magnetostriction are, for example, nickel, iron-nickel as well as iron-cobalt and iron-aluminum alloys.
  • the Fe-Ni alloy known above under the name Invar steel with 36% ⁇ 0.5% nickel content can be used, in which the following values are not exceeded: C ⁇ 0.04%, Si ⁇ 0.2%, Mn ⁇ 0.4%, P ⁇ 0.01% and S ⁇ 0.015%.
  • this alloy has a particularly low thermal expansion with a minimum of about 2 x 10 "6 K " 1 . It is also possible to use alloys with other nickel or cobalt contents, thermal expansions smaller than 10 x 10 "6 K " 1 being achieved with alloys with 30-50% nickel. Alloys with 42-55% nickel have thermal expansions comparable to that of glass.
  • valve is shown cut on one side.
  • the pipe 40 is made of Invar or a material with a small coefficient of expansion.
  • This tube 40 is connected to the part 41 on which the force acts, for. B. by welding.
  • a valve funnel 43 is attached, which has a shoulder 44 and connected to the valve plate at the edge and in the center, for. B. is laser welded.
  • the tube 40 is inserted into the funnel 43, is supported on the shoulder 44 and is welded to the funnel 43.
  • the tube has a kink protection in the form of beads 45.
  • Fig. 2a shows a section through the tube in the area of the beads. A possible outer tube for protection is not shown in FIG. With this kink protection, the tube can be made very thin-walled and lightweight.
  • Fig. 3 half of the lower part of the valve is shown.
  • the tube is labeled 50, the funnel 53, the valve disk 52.
  • the funnel 53 is connected to the valve plate 52 by flanges at the edge and in the center, possibly shrink-wrapped at 56.
  • the connection of the tube 50 to the funnel can be realized in that a section 57 of the funnel is finished. (turned, ground) and that the pipe has shrunk in this area, which has a small step due to the fine machining.
  • the inside of the tube 50 and possibly also the funnel is filled with sodium 59. Other alkali metals can also be used here.
  • An outer tube 58 (protective tube) is also provided here.
  • beads can be provided in the inner tube as kink protection.
  • FIG. 4 largely corresponds to that of FIG. 3.
  • the funnel 63 is welded to the valve disk at 67.
  • the tube 60 is also welded to the funnel 63 at 68; and finally the outer tube is welded to the funnel at 69.
  • a bead 65 is visible here. The beads protrude into the valve guide at the inlet valve, up to the valve guide at the outlet valve.
  • the exhaust valve can be designed like the intake valve.

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

L'invention concerne une soupape à gaz à deux voies dotée d'une tige de soupape et d'un siège sensiblement métallique qui, lorsque la soupape est montée, ferme ou ouvre une chambre d'explosion d'un moteur à combustion interne vis-à-vis d'un canal de gaz pouvant être relié à la chambre d'explosion. Lorsque la soupape est en position ouverte, des gaz de combustion s'écoulent sur la face arrière de la soupape et cette face arrière est dotée d'un entonnoir déflecteur qui s'étend du pourtour du siège vers la tige de soupape en s'effilant et qui entoure cette dernière. L'équipement qui transmet la force d'actionnement de la soupape au siège de soupape est largement réalisé dans un matériau à faible dilatation thermique p.ex. Invar.
PCT/EP1998/004516 1997-07-22 1998-07-22 Soupape a gaz a deux voies Ceased WO1999005397A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CNB988013932A CN1160750C (zh) 1997-09-23 1998-07-21 开关
EP98943746A EP0998622A1 (fr) 1997-07-22 1998-07-22 Soupape a gaz a deux voies

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997131382 DE19731382A1 (de) 1997-07-22 1997-07-22 Gaswechselventil und Verfahren zum Messen des Druckes in einem Brennraum einer Brennkraftmaschine
DE19731382.5 1997-07-22

Publications (1)

Publication Number Publication Date
WO1999005397A1 true WO1999005397A1 (fr) 1999-02-04

Family

ID=7836473

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/004516 Ceased WO1999005397A1 (fr) 1997-07-22 1998-07-22 Soupape a gaz a deux voies

Country Status (3)

Country Link
EP (1) EP0998622A1 (fr)
DE (1) DE19731382A1 (fr)
WO (1) WO1999005397A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354074A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354085A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354076A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
US7862007B2 (en) * 2003-11-19 2011-01-04 Daimler Ag Lightweight valve
US7905468B2 (en) 2003-11-19 2011-03-15 Daimler Ag Lightweight valve

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10312491B3 (de) * 2003-03-20 2005-02-03 Robert Bosch Gmbh Drucksensor mit Hitzeschild zum Einsatz in Verbrennungskraftmaschinen
GB2445761A (en) * 2007-01-22 2008-07-23 Lotus Car An internal combustion engine with in-cylinder pressure measurement system
DE102013210900A1 (de) 2013-06-11 2014-12-11 Mahle International Gmbh Gaswechselventil einer Brennkraftmaschine
DE102017004835A1 (de) 2017-05-19 2017-11-23 Daimler Ag Gaswechselventil für eine Brennkraftmaschine und Verfahren zum Herstellen eines solchen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1727621A (en) * 1928-02-18 1929-09-10 Gen Motors Corp Exhaust valve
US2371548A (en) * 1943-12-06 1945-03-13 Thomas F Saffady Valve
FR2540176A1 (fr) * 1983-01-27 1984-08-03 Laing Oliver Soupape pour moteurs a combustion interne
EP0709552A2 (fr) * 1994-10-31 1996-05-01 Eaton Corporation ContrÔle de la température dans une soupape de moteur ultra légère

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1727621A (en) * 1928-02-18 1929-09-10 Gen Motors Corp Exhaust valve
US2371548A (en) * 1943-12-06 1945-03-13 Thomas F Saffady Valve
FR2540176A1 (fr) * 1983-01-27 1984-08-03 Laing Oliver Soupape pour moteurs a combustion interne
EP0709552A2 (fr) * 1994-10-31 1996-05-01 Eaton Corporation ContrÔle de la température dans une soupape de moteur ultra légère

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354074A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354085A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354076A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354085B4 (de) * 2003-11-19 2005-11-24 Daimlerchrysler Ag Leichtbauventil
DE10354074B4 (de) * 2003-11-19 2006-01-26 Daimlerchrysler Ag Leichtbauventil
DE10354076B4 (de) * 2003-11-19 2006-03-09 Daimlerchrysler Ag Leichtbauventil
US7862007B2 (en) * 2003-11-19 2011-01-04 Daimler Ag Lightweight valve
US7905468B2 (en) 2003-11-19 2011-03-15 Daimler Ag Lightweight valve
US7941922B2 (en) 2003-11-19 2011-05-17 Daimler Ag Method of manufacturing a lightweight valve

Also Published As

Publication number Publication date
DE19731382A1 (de) 1999-01-28
EP0998622A1 (fr) 2000-05-10

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