DE3149775A1 - Mixture compressing internal combustion engine - Google Patents

Mixture compressing internal combustion engine

Info

Publication number
DE3149775A1
DE3149775A1 DE19813149775 DE3149775A DE3149775A1 DE 3149775 A1 DE3149775 A1 DE 3149775A1 DE 19813149775 DE19813149775 DE 19813149775 DE 3149775 A DE3149775 A DE 3149775A DE 3149775 A1 DE3149775 A1 DE 3149775A1
Authority
DE
Germany
Prior art keywords
combustion chamber
internal combustion
combustion engine
chamber lining
compressing internal
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
Application number
DE19813149775
Other languages
German (de)
Other versions
DE3149775C2 (en
Inventor
Wolf Dr.-Ing. 7000 Stuttgart Boll
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to DE19813149775 priority Critical patent/DE3149775C2/en
Publication of DE3149775A1 publication Critical patent/DE3149775A1/en
Application granted granted Critical
Publication of DE3149775C2 publication Critical patent/DE3149775C2/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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/02—Surface coverings of combustion-gas-swept parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • 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 
    • F02F3/0084—Pistons  the pistons being constructed from specific materials
    • 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
    • F02F3/14—Pistons  having surface coverings on piston heads within combustion chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

A mixture compressing internal combustion engine comprises a heat insulating ceramic combustion chamber lining. In order to be able to fix the combustion chamber lining to the surfaces defining the combustion chamber by simple means, the combustion chamber lining is pretreated and then fixed to the surfaces by a solder.

Description

Daimler-Benz Aktiengesellschaft Daim 13 335/4Daimler-Benz Aktiengesellschaft Daim 13 335/4

Stuttgart-Untertürkheim" l4. Dezember 1981Stuttgart-Untertürkheim "December 14, 1981

"Gemischverdichtende Brennkraftmaschine""Mixture-compressing internal combustion engine"

Die Erfindung bezieht sich auf eine gemischverdichtende Brennkraftmaschine nach dem Oberbegriff des Patentanspruches 1.The invention relates to a mixture-compressing one Internal combustion engine according to the preamble of claim 1.

Es ist bekannt, die Oberfläche des Kolbenbodens vom Kolben für Brennkraftmaschinen mit wärmeisolierenden Werkstoffen zu versehen (DE-PS 807 868). Bei dieser Ausführung sind die kegel stumpf artigen keramischen Körper vor dem Gießen des Kolbens in die Gießform einzusetzen. Diese Art der Herstellung erfordert ein nachträgliches Schleifen des Kolbenbodens, damit die keramischen Körper und der. Kolbenboden eine Ebene bilden. Zwar ist es grundsätzlich bekannt (DS-PS 733 93l)i eine keramische Brennraumauskleidung durch Schraubenverbindungen an brenriraumbegrenzenden Flächen zu befestigen, jedoch erfordert dies einen erheblichen Fertigungsaufwand.It is known the surface of the piston crown from the piston for internal combustion engines with heat-insulating materials to be provided (DE-PS 807 868). In this version, the truncated cone-like ceramic bodies are before casting insert the piston into the mold. This type of production requires subsequent grinding of the Piston crown so that the ceramic body and the. Piston crown form a level. Although it is basically known (DS-PS 733 93l) i a ceramic combustion chamber lining by screw connections at the limits of the combustion chamber To fasten surfaces, however, this requires a considerable manufacturing effort.

Aufgabe der Erfindung ist es, eine Befestigungsart zu finden, mit der eine wärmeisolierende keramische Brennraumauskleidung an den brennraumbegrenzenden Flächen, auf einfache Art befestigt werden kann.The object of the invention is to provide a type of fastening find a heat-insulating ceramic combustion chamber lining can be easily attached to the surfaces delimiting the combustion chamber.

- "jf - Daim 13 335/4- "jf - Daim 13 335/4

Erfindungsgemäß wird diese Aufgabe durch die gekennzeichneten Merkmale des Patentanspruches 1 gelöst.According to the invention, this object is achieved by the characterized features of claim 1.

Weitere Merkmale der Erfindung beinhalten die Unteransprüche. Further features of the invention are contained in the subclaims.

Die erfindungsgemäße Befestigungsart der wärmeisolierenden keramischen Brennraumauskleidung weist den Vorteil auf, daß allein durch eine einfache Vorbehandlung der Brennraumauskleidung, z.B. durch Metallbedampfung/eine Lötverbindung zwischen der Brennraumauskleidung und den brennraumbegrenzenden Flächen möglich wird, die den unterschiedlichen Temperaturausdehnungskoeffizienten der Brennraumauskleidung einerseits und andererseits z.B. des Zylinderkopfes Rechnung trägt.The method of fastening the heat-insulating ceramic combustion chamber lining according to the invention has the advantage that a simple pretreatment of the combustion chamber lining, e.g. metal vapor deposition / a soldered connection between the combustion chamber lining and the surfaces delimiting the combustion chamber, makes it possible to take into account the different temperature expansion coefficients of the combustion chamber lining on the one hand and e.g. the cylinder head on the other wearing.

In der Zeichnung ist die Erfindung in zwei beispielsweisen Ausführungsformen dargestellt. Es zeigt:In the drawing, the invention is shown in two exemplary embodiments. It shows:

Fig. 1 eine Schnittdarsteilung durch eine Brennkraftmaschine im Bereich des 'schema ti sch dargestellten Brennraumes,1 shows a sectional view through an internal combustion engine in the area of the combustion chamber shown in the diagram,

Fig. 2 eine Draufsicht des Kolbens der Fig. 1 mit Dehnfügen undFig. 2 is a plan view of the piston of Fig. 1 with expansion joints and

Fig. 3 einen Schnitt durch einen Kolben, bei dem die kolbenseitige Brennraumauskleidung durch eine Anzahl keramischer Körper gebildet wird.3 shows a section through a piston in which the piston-side combustion chamber lining is formed by a number of ceramic bodies.

Der in Fig. 1 dargestellte Brennraum 1 einer Brennkraftmaschine wird durch eine Fläche 2 einer Zylinderlaufbuchse 3# einer Fläche 4 eines Kolbens 5 und einer Fläche 6 einesThe illustrated in Fig. 1 combustion chamber 1 of an internal combustion engine is formed by a surface 2 of a cylinder liner 3 #, a surface 4 of a piston 5 and a surface 6 of a

- .::.. i ■*;:.:"; -\ 3 u 9-77 5-. :: .. i ■ *;:.: "; - \ 3 u 9-77 5

-f- " ' ; Daira 13 335/4 -f- "'; Daira 13 335/4

Zylinderkopfes 7 begrenzt. Ein im Zylinderkopf 7 befindlicher Strömungskanal 8 wird von einem mit einem Ventilsitz zusammenwirkenden Ventil l4 verschlossen. Eine wärmeisolierende Brennraumauskleidung 10, Il und 12 ist an den begrenzenden Flächen 2, 4 und 6 mit einem Lot, vorzugsweise einem Weichlot 13/befestigt. Zur Ermöglichung dieser Lötverbindung sind die den brennraumbegrenzenden Flächen 2, 4 und 6 zugewandten Oberflächen 151 l6 und 17 vorbehandelt worden, z.B. durch Metallaufdampfung.Cylinder head 7 limited. One located in the cylinder head 7 Flow channel 8 is closed by a valve 14 cooperating with a valve seat. A heat insulating one Combustion chamber lining 10, II and 12 is at the limiting Areas 2, 4 and 6 are fastened with a solder, preferably a soft solder 13 /. To enable this solder connection are those facing the surfaces 2, 4 and 6 delimiting the combustion chamber Surfaces 151, 16 and 17 have been pretreated, e.g. by metal vapor deposition.

In der Fig. 2 ist die kolbenbodenseitige wärmeisolierende Brennraumauskleidung 12 in der Draufsicht veranschaulicht, die feuerseitig mit Dehnfugen, z.B. in Form von nutartigen Einschnitten 25, versehen ist, durch die die wärmeisolierende Brennraumauskleidung 12 in quadratische Felder l4 unterteilt ist. Die temperaturabhängige Längenänderung der wärmeisolierenden Brennraumauskleidung 12 wird in den Einschnitten l8 kompensiert.In Fig. 2, the piston bottom side is heat insulating Combustion chamber lining 12 illustrated in plan view, which is provided on the fire side with expansion joints, e.g. in the form of groove-like incisions 25, through which the heat-insulating Combustion chamber lining 12 is divided into square fields l4. The temperature-dependent change in length of the heat-insulating The combustion chamber lining 12 is compensated for in the incisions 18.

In Fig. 3 ist anhand eines Kolbens 19 ein Ausführungsbeispiel dargestellt, bei dem eine kolbenseitige wärmeisolierende Brennraumauskleidung 20 durch eine Anzahl keramischer Körper 21 gebildet ist. Dabei sind die keramischen Körper unter Beibehaltung von Dehnfugen 22 durch eine Weichlotschicht mit dem Kolbenboden 24 des Kolbens 19 verbunden.In Fig. 3, using a piston 19, an embodiment is shown in which a piston-side heat insulating Combustion chamber lining 20 is formed by a number of ceramic bodies 21. Here are the ceramic bodies while maintaining expansion joints 22 connected to the piston head 24 of the piston 19 by a layer of soft solder.

LeerseiteBlank page

Claims (4)

Daimler-Benz Aktiengesellschaft Daim 13 335/4Daimler-Benz Aktiengesellschaft Daim 13 335/4 Stuttgart-Untertürkheim l4. Dezember 1981Stuttgart-Untertürkheim l4. December 1981 AnsprücheExpectations ( 1.)Gemischverdichtende Brennkraftmaschine, die mit einer ^-^ wärmeisolierenden keramischen Brennraumauskleidung(1.) Mixture-compressing internal combustion engine with a ^ - ^ heat-insulating ceramic combustion chamber lining versehen ist, dadurch gekennzeichnet, daß die wärmeisolierende keramische Brennraumauskleidung (10, 11, 12, 20) durch eine Vorbehandlung mit einem Lot an die brennraumbegrenzenden Flächen (2, 4, 6, 23) befestigbar ist.is provided, characterized in that that the heat-insulating ceramic combustion chamber lining (10, 11, 12, 20) by pretreatment with a solder on the surfaces delimiting the combustion chamber (2, 4, 6, 23) can be fastened. 2. Gemischverdichtende Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Vorbehandlung Metallaufdampfung und das Lot Weichlot (13) ist.2. mixture-compressing internal combustion engine according to claim 1, characterized in that the Pre-treatment metal vapor deposition and the solder soft solder (13) is. 3. Gemischverdichtende Brennkraftmaschine nach Anspruch l, dadurch gekennzeichnet, daß di e wärmeisolierende keramische Brennraumauskleidung (lO, 11, 12, 20) mit Dehnfugen (22, 25),z.B. in Form von nutartigen Einschnitten, versehen ist.3. mixture-compressing internal combustion engine according to claim l, characterized in that the heat-insulating ceramic combustion chamber lining (10, 11, 12, 20) with expansion joints (22, 25), e.g. in the form of groove-like incisions. 4. Gemischverdichtende Brennkraftmaschine nach den Ansprüchen 1 bis 3i dadurch gekennzeichnet, daß die wärmeisolierende keramische Brennraumauskleidung4. Mixture-compressing internal combustion engine according to the claims 1 to 3i characterized in that the heat-insulating ceramic combustion chamber lining (20) durch β·*ηβ Anzahl keramischer Körper (21) ausbiidbar ist.(20) can be formed by β * ηβ number of ceramic bodies (21) is.
DE19813149775 1981-12-16 1981-12-16 Mixture-compressing internal combustion engine Expired DE3149775C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19813149775 DE3149775C2 (en) 1981-12-16 1981-12-16 Mixture-compressing internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813149775 DE3149775C2 (en) 1981-12-16 1981-12-16 Mixture-compressing internal combustion engine

Publications (2)

Publication Number Publication Date
DE3149775A1 true DE3149775A1 (en) 1983-06-23
DE3149775C2 DE3149775C2 (en) 1985-11-07

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0285312A2 (en) * 1987-03-24 1988-10-05 Ngk Insulators, Ltd. Ceramic materials to be insert-cast and ceramic port liners
EP0287236A2 (en) * 1987-04-11 1988-10-19 Isuzu Motors Limited Heat-insulating engine structure and method of manufacturing the same
US4817578A (en) * 1986-07-31 1989-04-04 Honda Giken Kogyo Kabushiki Kaisha Internal combustion engine
US4856462A (en) * 1986-11-13 1989-08-15 Honda Giken Kogyo Kabushiki Kaisha Cylinder block made of fiber-reinforced light alloy for internal combustion engine
EP0409428A1 (en) * 1989-07-17 1991-01-23 Isuzu Motors Limited Four-cycle heat insulating engine
US5260116A (en) * 1987-03-24 1993-11-09 Ngk Insulators, Ltd. Ceramicm port liners
WO2018039541A1 (en) * 2016-08-25 2018-03-01 Corning Incorporated Segmented thermal barriers for internal combustion engines and methods of making the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729230A1 (en) * 1977-06-29 1979-01-11 Daimler Benz Ag Thermal insulation on IC engine parts - with stressed areas covered with ceramic bonded on with adhesive

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2729230A1 (en) * 1977-06-29 1979-01-11 Daimler Benz Ag Thermal insulation on IC engine parts - with stressed areas covered with ceramic bonded on with adhesive

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE-Lit. Dubbels Taschenbuch für den Maschinenbau, 1963, S.640-643 *
DE-Lit. Otto Kraemer, Bau und Berechnung von Verbrennungs- motoren, Springer-Verlag 1963, S.50 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4817578A (en) * 1986-07-31 1989-04-04 Honda Giken Kogyo Kabushiki Kaisha Internal combustion engine
US4856462A (en) * 1986-11-13 1989-08-15 Honda Giken Kogyo Kabushiki Kaisha Cylinder block made of fiber-reinforced light alloy for internal combustion engine
EP0285312A2 (en) * 1987-03-24 1988-10-05 Ngk Insulators, Ltd. Ceramic materials to be insert-cast and ceramic port liners
EP0285312A3 (en) * 1987-03-24 1989-03-22 Ngk Insulators, Ltd. Ceramic materials to be insert-cast and ceramic port liners
US5055435A (en) * 1987-03-24 1991-10-08 Ngk Insulators, Ltd. Ceramic materials to be insert-cast
US5260116A (en) * 1987-03-24 1993-11-09 Ngk Insulators, Ltd. Ceramicm port liners
EP0287236A2 (en) * 1987-04-11 1988-10-19 Isuzu Motors Limited Heat-insulating engine structure and method of manufacturing the same
US4838235A (en) * 1987-04-11 1989-06-13 Isuzu Motors Limited Heat-insulating engine structure and method of manufacturing the same
EP0287236A3 (en) * 1987-04-11 1989-12-20 Isuzu Motors Limited Heat-insulating engine structure and method of manufacturing the same
EP0409428A1 (en) * 1989-07-17 1991-01-23 Isuzu Motors Limited Four-cycle heat insulating engine
US5080081A (en) * 1989-07-17 1992-01-14 Isuzu Motors Limited Four-cycle heat insulating engine
WO2018039541A1 (en) * 2016-08-25 2018-03-01 Corning Incorporated Segmented thermal barriers for internal combustion engines and methods of making the same

Also Published As

Publication number Publication date
DE3149775C2 (en) 1985-11-07

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8125 Change of the main classification

Ipc: F02B 23/08

D2 Grant after examination
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