DE367003C - Cooling device for valves of internal combustion engines - Google Patents

Cooling device for valves of internal combustion engines

Info

Publication number
DE367003C
DE367003C DEB94205D DEB0094205D DE367003C DE 367003 C DE367003 C DE 367003C DE B94205 D DEB94205 D DE B94205D DE B0094205 D DEB0094205 D DE B0094205D DE 367003 C DE367003 C DE 367003C
Authority
DE
Germany
Prior art keywords
valves
internal combustion
cooling device
combustion engines
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.)
Expired
Application number
DEB94205D
Other languages
German (de)
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.)
GEORG BERGMANN DR ING
Original Assignee
GEORG BERGMANN DR ING
Publication date
Priority to DEB94205D priority Critical patent/DE367003C/en
Application granted granted Critical
Publication of DE367003C publication Critical patent/DE367003C/en
Expired 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
    • 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

Landscapes

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

Description

Kühlvorrichtung für Ventile von Verbrennungskraftmaschinen. Das Auspuffventil eines Explosionsmotors ist derjenige Teil, welcher der stärksten Überhitzung ausgesetzt ist. Seine Temperatur gibt im allgemeinen die Grenze für die Höhe der Verdichtung ab. Da es unmöglich ist, den Ventilteller unmittelbar zu kühlen, so sind viele Versuche angestellt worden, durch besonders gute Wärmeleiter die Wärme möglichst schnell aus dem Ventile abzuführen. So wurden beispielsweise Silberstifte verwandt, welche in das Ventil eingesetzt wurden und die Wärme aus dem Kerne des Ventiltellers beschleunigt zum Ventilrande führen sollten.Cooling device for valves of internal combustion engines. The exhaust valve of an explosion engine is the part that is exposed to the greatest overheating is. Its temperature generally sets the limit for the level of compression away. Since it is impossible to cool the valve disc immediately, many attempts are made been employed, the heat as quickly as possible thanks to particularly good heat conductors discharge from the valves. For example, silver pens were used, which inserted into the valve and accelerates the heat from the core of the valve disk should lead to the valve rim.

Die verschiedenen Versuche haben jedoch zu keinem Erfolge .geführt, weil ,die besondere Art der Wärmebelastung des Ventils unberücksichtigt :blieb. Die Temperatur des Yentiltellers ist im Kerne am höchsten und nimmt zum Rande zu immer mehr ab. Da für Wärmeleitung mit hohem. Temperaturgefälle nur geringer Querschnitt erforderlich ist, während bei niederem Temperaturgefälle durch die geringere Fließgeschwindigkeit größerer Fließquerschnitt notwendig ist, so muß der abfließenden Wärme von der Ventilmitte bis zum Rande ein .dauernd steigender Ouerschnitt zur Verfügung stehen.The various attempts, however, have not led to any success. because the special type of heat load on the valve was not taken into account: remained. The temperature of the Yentil plate is highest in the core and increases towards the edge more and more from. As for heat conduction with high. Temperature gradient only small cross-section is required, while at a lower temperature gradient due to the lower flow rate larger flow cross-section is necessary, then the dissipating heat must be from the center of the valve a continuously increasing cross section are available up to the edge.

In dem vorliegenden Patent wird ein Ventil beschrieben, dessen Teller durch eine Schicht aus gut wärmeleitendem Metall überzogen ist.In the present patent a valve is described, the disc is covered by a layer of highly thermally conductive metal.

In der beiliegenden Abbildung ist a das Ventil, das aus Festigkeitsrücksichten aus hochwertigem Stahl angefertigt ist, b ein Überzug aus gut wärmeleitendem Metall, c die Wand des Zylinders. Der Querschnitt des Überzuges ist in -der Mitte des Ventiltellers nur dünn. entsprechend :dem hohen Wärmegefälle, und wird zum Rande zu immer dicker, so daß in jedem Augenblicke der abzuführenden Wärme der notwendige Fließquerschnitt zur Verfügung steht.In the accompanying figure, a is the valve, which for reasons of strength is made of high quality steel, b a coating made of metal that conducts heat well, c the wall of the cylinder. The cross-section of the coating is in the middle of the valve disk just thin. corresponding to: the high heat gradient, and becomes thicker and thicker towards the edge, so that at every moment the heat to be dissipated has the necessary flow cross-section is available.

Claims (1)

PATENT-ANspRUcH: Kühlvorrichtung für Ventile für Verbrennungskraftmaschinen, dadurch gekennzeichnet, daß,clie Oberfläche des Ventils durch gut leitendes Metall gebildet ist, ,dessen Verteilung so vorgenommen ist, daß nach dem Ventilrande zu der Querschnitt des Überzu'es wächst.PATENT CLAIM: Cooling device for valves for internal combustion engines, characterized in that the surface of the valve is made of highly conductive metal is formed, whose distribution is made so that after the valve edge to the cross-section of the over-inflation grows.
DEB94205D Cooling device for valves of internal combustion engines Expired DE367003C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB94205D DE367003C (en) Cooling device for valves of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB94205D DE367003C (en) Cooling device for valves of internal combustion engines

Publications (1)

Publication Number Publication Date
DE367003C true DE367003C (en) 1923-01-15

Family

ID=6987420

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB94205D Expired DE367003C (en) Cooling device for valves of internal combustion engines

Country Status (1)

Country Link
DE (1) DE367003C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881500A (en) * 1987-12-04 1989-11-21 Ngk Spark Plug Co., Ltd. Poppet valve made of ceramics
WO2003089768A1 (en) * 2002-04-20 2003-10-30 Mahle Ventiltrieb Gmbh Moveable valve sealing body exposed to hot gases
EP2182183A1 (en) 2008-10-31 2010-05-05 Mahle International GmbH Mobile sealing body of a valve exposed to hot gasses
JP2014062522A (en) * 2012-09-24 2014-04-10 Mitsubishi Heavy Ind Ltd Engine valve

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4881500A (en) * 1987-12-04 1989-11-21 Ngk Spark Plug Co., Ltd. Poppet valve made of ceramics
WO2003089768A1 (en) * 2002-04-20 2003-10-30 Mahle Ventiltrieb Gmbh Moveable valve sealing body exposed to hot gases
DE10217719A1 (en) * 2002-04-20 2003-11-06 Mahle Ventiltrieb Gmbh Movable closure body of a valve exposed to hot gases
EP2182183A1 (en) 2008-10-31 2010-05-05 Mahle International GmbH Mobile sealing body of a valve exposed to hot gasses
DE102008054266A1 (en) 2008-10-31 2010-05-06 Mahle International Gmbh Movable, hot gases exposed closure body of a valve
US8726873B2 (en) 2008-10-31 2014-05-20 Mahle International Gmbh Moveable valve sealing body exposed to hot gases
JP2014062522A (en) * 2012-09-24 2014-04-10 Mitsubishi Heavy Ind Ltd Engine valve

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