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DE943917C - Piston head covered with a heat-insulating layer - Google Patents

Piston head covered with a heat-insulating layer

Info

Publication number
DE943917C
DE943917C DED13049D DED0013049D DE943917C DE 943917 C DE943917 C DE 943917C DE D13049 D DED13049 D DE D13049D DE D0013049 D DED0013049 D DE D0013049D DE 943917 C DE943917 C DE 943917C
Authority
DE
Germany
Prior art keywords
piston
insulating layer
silicon
piston head
covered
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
DED13049D
Other languages
German (de)
Inventor
Dr Joseph Dornauf
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.)
JOSEPH DORNAUF DR
Original Assignee
JOSEPH DORNAUF DR
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
Application filed by JOSEPH DORNAUF DR filed Critical JOSEPH DORNAUF DR
Priority to DED13049D priority Critical patent/DE943917C/en
Application granted granted Critical
Publication of DE943917C publication Critical patent/DE943917C/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/10—Pistons  having surface coverings
    • F02F3/12—Pistons  having surface coverings on piston heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Description

Mit einer wärmeisolierenden Schicht abgedeckter Kolbenboden Es ist vorgeschlagen, Kolbenböden von Verbrennungsmaschinen mit einer Schicht zu versehen, die den Wärmeübergang der Verbrennungsgase auf den Kolbenboden verringern soll mit dem Ziel, den Verbrennungsgasen möglichst wenig Wärme zu entziehen und die Lebensdauer der Kolben zu erhöhen. Bei thermisch hoch beanspruchten Maschinen erwärmt sich besonders der dem Kolbenboden am nächsten liegende Kolbenring und es schlagen deshalb die Nuten, die den Kolbenring tragen, infolge der Hitze schnell aus.Piston crown covered with a heat-insulating layer It is proposed to provide piston heads of internal combustion engines with a layer, which is intended to reduce the heat transfer of the combustion gases to the piston crown the aim of extracting as little heat as possible from the combustion gases and extending the service life increase the piston. Machines that are subject to high thermal loads are particularly hot the piston ring closest to the piston crown and therefore hit the Grooves that carry the piston ring are quickly made due to the heat.

:Ulan hat bereits vorgeschlagen, den Kolbenloden, der mit dem Verbrennungsgas in Berührung kommt, mit isolierenden Schichten keramischer Art zu versehen. Nach der Erfindung soll eine Schicht von Silicium auf pulvermetallurgischen Wege auf dem Kolbenboden angebracht werden. Dieses Metall hat als Kol.benwerks,toff besondere Vorteile, wie z. B. geringes spezifisches Gewicht, hohe Korrosionsbeständigkeit gegen Verbrennungsgase, hohe Warmhärte, eine schlechte Wärmeleitfähigkeit und einen geringen Wärmeau°sdehnungsleoeffizienten.: Ulan has already proposed the piston loden that is used with the combustion gas comes into contact to be provided with insulating layers of ceramic type. To The invention aims at a layer of silicon by powder metallurgical means attached to the piston crown. As Kol.benwerks, toff, this metal has special features Advantages such as B. low specific weight, high corrosion resistance against combustion gases, high hot hardness, poor thermal conductivity and a low thermal expansion coefficient.

Auf dem gießtechnischen Wege ist eine Aufbringung von Silicium nicht möglich. Die Pulvermetallurgie gestattet nun die Herstellung eines geeigneten Kolbenbodens aus Metallpulver und gestattet zugleich die Herstellung des Kolbenbodens aus Schichten verschiedener Zusammensetzung, und zwar kann auf dem Kolbenboden, der von Verbrennungsgasen umspült wird, reines Silicium und anschließend Schichten mit gewissen Konzentrationen Silicium mit dem Kolbenwerksfoff vorgesehen werden, so daß ein allmählicher Übergang von dem Silicium nach dem Kolbenwerkstoff =und damit auch eine gute Bindung stattfindet. '- Es können außer Silicium auch noch Beimengungen, . z. B. von. Silicium mit Siliciumdioxyd, mit Verwendung finden.It is not possible to apply silicon by casting possible. Powder metallurgy now allows the manufacture of a suitable piston crown made of metal powder and at the same time allows the piston crown to be manufactured from layers different composition, namely can be on the piston crown, by combustion gases is washed around, pure silicon and then layers with certain concentrations Silicon be provided with the Kolbenwerkfoff, so that a gradual transition from the silicon after the piston material = and thus a good bond takes place. In addition to silicon, admixtures,. z. B. from. Silicon with silicon dioxide, with use.

Der Kolben kann dabei gegossen oder gepreßt sein. Er kann auch mitsamt dem Kolbenboden äui pulvermetallurgischem Wege hergestellt werden.The piston can be cast or pressed. He can also take it with you the piston crown can be produced using powder metallurgy methods.

Claims (1)

PATENTANSPRÜCHE: i. Mit einer wärmeisolierenden Schicht abgedeckter Kolbenboden, dadurch gekerin2eichnet, daß die Schicht aus Silicium oder einer Mischung von Silicium mit anderen -Stoffen, z. B. Siliciumdioxyd, besteht und, auf Pulver- , metallurgischem Wege aufgebracht ist. -2,.- 'Mit einer. wärmeisolierenden Schicht abgedckter Kolbenboden nach Anspruch i, dadurch gekennzeichnet; daß die dem Verbrennungsraum zugekehrte Seite aus Silicium besteht und zonenweise allmählich seine Zusammensetzung ändert, und zwar so, daß die dem Kolben zugekehrte Schicht etwa der Zusammensetzung des Kolbenkörpers entspricht. 3. Mit einer wärmeisolierenden Schicht abgedeckter Kolbenboden nach Anspruch i und 2, dadurch gekennzeichnet, daß die Herstellung der Abdeckschicht zugleich mit der Pulvermetallurgischen Herstellung des Kolbens er-'_ .folgt. Angezogene Druckschriften: Deutsche: Patentschriften Nr. 402 349, 454 809, 646 796, 66o o64.PATENT CLAIMS: i. Covered with a heat insulating layer Piston head, characterized by the fact that the layer of silicon or a mixture of silicon with other substances, e.g. B. silicon dioxide, and, on powder , metallurgical way is applied. -2, .- 'With a. heat insulating layer Covered piston head according to claim i, characterized in that; that the combustion chamber The opposite side consists of silicon and gradually changes its composition in zones changes, in such a way that the layer facing the piston approximately corresponds to the composition of the piston body corresponds. 3. Covered with a heat insulating layer Piston head according to claims i and 2, characterized in that the manufacture of the Cover layer at the same time as the powder metallurgical production of the piston er -'_ .follows. Printed publications: German: Patent specifications No. 402 349, 454 809, 646 796, 66o o64.
DED13049D 1944-09-10 1944-09-10 Piston head covered with a heat-insulating layer Expired DE943917C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED13049D DE943917C (en) 1944-09-10 1944-09-10 Piston head covered with a heat-insulating layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED13049D DE943917C (en) 1944-09-10 1944-09-10 Piston head covered with a heat-insulating layer

Publications (1)

Publication Number Publication Date
DE943917C true DE943917C (en) 1956-06-01

Family

ID=7034283

Family Applications (1)

Application Number Title Priority Date Filing Date
DED13049D Expired DE943917C (en) 1944-09-10 1944-09-10 Piston head covered with a heat-insulating layer

Country Status (1)

Country Link
DE (1) DE943917C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320424A1 (en) * 1975-08-08 1977-03-04 Nat Res Dev INTERNAL COMBUSTION ENGINE PART MADE FROM SILICON NITRIDE AND ITS PRODUCTION PROCESS
WO1979001103A1 (en) * 1978-05-23 1979-12-13 British Internal Combust Eng Composite materials
EP0027782A1 (en) * 1979-08-30 1981-04-29 Conort Engineering Ab Process for achieving stoichiometric combustion in two-stroke Otto engines, and system therefor
EP0143330A2 (en) * 1983-10-26 1985-06-05 Ae Plc Reinforced pistons

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE402349C (en) * 1922-08-30 1924-09-19 Charles Whipple Philip Pistons, especially for internal combustion engines
DE454809C (en) * 1924-05-09 1928-01-19 Fried Krupp Akt Ges Internal combustion engine
DE606796C (en) * 1934-12-10 Anton Bode Heat protection cover that closes on all sides for coffee, tea and similar pots
DE660064C (en) * 1935-03-26 1938-05-16 Ernst Mahle Dipl Ing Light metal pistons for internal combustion engines

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE606796C (en) * 1934-12-10 Anton Bode Heat protection cover that closes on all sides for coffee, tea and similar pots
DE402349C (en) * 1922-08-30 1924-09-19 Charles Whipple Philip Pistons, especially for internal combustion engines
DE454809C (en) * 1924-05-09 1928-01-19 Fried Krupp Akt Ges Internal combustion engine
DE660064C (en) * 1935-03-26 1938-05-16 Ernst Mahle Dipl Ing Light metal pistons for internal combustion engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320424A1 (en) * 1975-08-08 1977-03-04 Nat Res Dev INTERNAL COMBUSTION ENGINE PART MADE FROM SILICON NITRIDE AND ITS PRODUCTION PROCESS
WO1979001103A1 (en) * 1978-05-23 1979-12-13 British Internal Combust Eng Composite materials
EP0027782A1 (en) * 1979-08-30 1981-04-29 Conort Engineering Ab Process for achieving stoichiometric combustion in two-stroke Otto engines, and system therefor
EP0143330A2 (en) * 1983-10-26 1985-06-05 Ae Plc Reinforced pistons
EP0143330A3 (en) * 1983-10-26 1986-04-30 Ae Plc Reinforced pistons
US4708104A (en) * 1983-10-26 1987-11-24 Ae Plc Reinforced pistons

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