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DE426314C - Pistons for injection machines with self-ignition and combustion chamber arranged in the piston crown - Google Patents

Pistons for injection machines with self-ignition and combustion chamber arranged in the piston crown

Info

Publication number
DE426314C
DE426314C DEA44718D DEA0044718D DE426314C DE 426314 C DE426314 C DE 426314C DE A44718 D DEA44718 D DE A44718D DE A0044718 D DEA0044718 D DE A0044718D DE 426314 C DE426314 C DE 426314C
Authority
DE
Germany
Prior art keywords
combustion chamber
pistons
ignition
piston crown
self
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
DEA44718D
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.)
ACRO AG
Original Assignee
ACRO AG
Publication date
Priority to DEA44718D priority Critical patent/DE426314C/en
Application granted granted Critical
Publication of DE426314C publication Critical patent/DE426314C/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
    • F02F3/14—Pistons  having surface coverings on piston heads within combustion chambers
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0603—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head
    • 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
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0675—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston the combustion space being substantially spherical, hemispherical, ellipsoid or parabolic
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Description

Kolben für Einspritzmaschinen mit Selbstzündung und im Kolbenboden angeordnetem Verbrennungsraum. Es sind Kolben für Verbrennungskraftmaschinen bekannt, bei welchen der Kolbenboden mit einer Schutzkappe versehen ist, die im Kolbenboden derart gelagert ist, daß ihr äußerster Teil sich frei ausdehnen kann, während zwischen - dem mittleren Teil und dem Kolbenboden ein mit leicht schmelzbarem Metall gefüllter Hohlraum liegt.Pistons for injection machines with compression ignition and in the piston crown arranged combustion chamber. There are known pistons for internal combustion engines, in which the piston head is provided with a protective cap, which is in the piston head is mounted so that its outermost part can expand freely while between - the middle part and the piston crown filled with easily fusible metal Cavity lies.

Bekannt ist ferner, den oberen Teil des Kolbenbodens halbkugelschalenartig zu gestalten und in die Schale eine Kappe unter Zwischenfügung eines Isoliermittels einzubringen.It is also known that the upper part of the piston head is hemispherical to shape and in the shell a cap with the interposition of an insulating agent bring in.

Demgegenüber bezieht sich die Erfindung auf einen Kolben für Einspritzmaschinen mit Selbstzündung zu dem Zwecke, einen guten Wärmeschutz während des Anlaufens herzustellen, so daß die Maschine bereits im kalten Zustande Selbstzündungen ergibt und im Leerlauf sowie bei jeglicher Belastung andauernd gleichmäßig beibehält.In contrast, the invention relates to a piston for injection machines with self-ignition for the purpose of providing good thermal protection during start-up, so that the machine gives auto-ignition when cold and when idling as well as consistently maintained under any load.

Das Kennzeichen der Erfindung besteht darin, daß der birnenförmige Kolbenverbrennungsraum mit einem Einsatz aus einem einen guten Wärmeschutz während des Anlaufens abgebenden Stoff versehen, selbst aber so dünnwandig gehalten ist, daß er die etwa zufolge Temperatursteigerung noch auftretenden Formänderungen ohne Gefahr von Rißbildung ausführen kann.The feature of the invention is that the pear-shaped Piston combustion chamber with an insert made of a good thermal protection during the starting substance is provided, but is itself so thin-walled that that he does not have any changes in shape that may occur as a result of the increase in temperature Risk of cracking can run.

Auf der Zeichnung ist ein derartiger Kolben schematisch im Schnitt veranschaulicht. Hierbei ist mit a der Kolben, mit b der Verbrennungsraum und mit d der Einsatz bezeichnet.Such a piston is illustrated schematically in section in the drawing. Here, the piston is designated with a, the combustion chamber with b and the insert with d.

Im gezeichneten Falle ist der Kolben aus Aluminium, der Einsatz aus Gußeisen gedacht. Selbstverständlich können jedoch jede sonst gegenseitig für die genannten Zwecke geeigneten Baustoffe Verwendung finden.In the case shown, the piston is made of aluminum and the insert is made of Cast iron thought. Of course, however, each other for each other suitable building materials are used.

Claims (1)

PATENTANSPRUCH: Kolben für Einspritzmaschinen mit Selbstzündung und im Kolbenboden angeordnetem Verbrennungsraum, dadurch gekennzeichnet, daß der birnenförmige Kolbenverbrennungsraum (b) mit einem Einsatz (d) aus einem einen guten Wärmeschutz während des Anlaufens abgebenden Stoff versehen, selbst aber so dünnwandig gehalten ist, daß er die etwa zufolge Temperatursteigerung noch auftretenden Formänderungen ohne Gefahr von Rißbildung ausführen kann. PATENT CLAIM: Pistons for injection machines with compression ignition and a combustion chamber arranged in the piston crown, characterized in that the pear-shaped piston combustion chamber (b) is provided with an insert (d) made of a substance that provides good thermal protection during start-up, but is itself so thin-walled that it is the shape changes still occurring as a result of the temperature increase without the risk of cracking.
DEA44718D Pistons for injection machines with self-ignition and combustion chamber arranged in the piston crown Expired DE426314C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEA44718D DE426314C (en) Pistons for injection machines with self-ignition and combustion chamber arranged in the piston crown

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA44718D DE426314C (en) Pistons for injection machines with self-ignition and combustion chamber arranged in the piston crown

Publications (1)

Publication Number Publication Date
DE426314C true DE426314C (en) 1926-03-08

Family

ID=6934346

Family Applications (1)

Application Number Title Priority Date Filing Date
DEA44718D Expired DE426314C (en) Pistons for injection machines with self-ignition and combustion chamber arranged in the piston crown

Country Status (1)

Country Link
DE (1) DE426314C (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749901A (en) * 1952-04-16 1956-06-12 Gen Motors Corp Combustion chamber
DE1041728B (en) * 1955-11-05 1958-10-23 Karl Schmidt Ges Mit Beschraen Light metal piston for internal combustion engines with a specially preformed and cast-in combustion chamber body
DE3328435A1 (en) * 1982-09-10 1984-03-15 Volkswagenwerk Ag, 3180 Wolfsburg Piston for internal combustion engines
DE3301724A1 (en) * 1983-01-20 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln PISTON FOR AN INTERNAL COMBUSTION ENGINE WITH COMBUSTION TANK IN THE PISTON BOTTOM
JPWO2015029985A1 (en) * 2013-08-26 2017-03-02 日本碍子株式会社 Internal combustion engine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2749901A (en) * 1952-04-16 1956-06-12 Gen Motors Corp Combustion chamber
DE1041728B (en) * 1955-11-05 1958-10-23 Karl Schmidt Ges Mit Beschraen Light metal piston for internal combustion engines with a specially preformed and cast-in combustion chamber body
DE3328435A1 (en) * 1982-09-10 1984-03-15 Volkswagenwerk Ag, 3180 Wolfsburg Piston for internal combustion engines
DE3301724A1 (en) * 1983-01-20 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln PISTON FOR AN INTERNAL COMBUSTION ENGINE WITH COMBUSTION TANK IN THE PISTON BOTTOM
JPWO2015029985A1 (en) * 2013-08-26 2017-03-02 日本碍子株式会社 Internal combustion engine

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