DE932463C - Pistons and cylinder covers for internal combustion engines - Google Patents

Pistons and cylinder covers for internal combustion engines

Info

Publication number
DE932463C
DE932463C DER6678A DER0006678A DE932463C DE 932463 C DE932463 C DE 932463C DE R6678 A DER6678 A DE R6678A DE R0006678 A DER0006678 A DE R0006678A DE 932463 C DE932463 C DE 932463C
Authority
DE
Germany
Prior art keywords
piston
pistons
cylinder cover
internal combustion
cylinder
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
DER6678A
Other languages
German (de)
Inventor
Peter Dipl-Ing Rembold
Viktor Dr-Ing Rembold
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DER6678A priority Critical patent/DE932463C/en
Application granted granted Critical
Publication of DE932463C publication Critical patent/DE932463C/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00Cylinders; Cylinder heads 
    • F02F1/24Cylinder heads
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02FCYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00Pistons 
    • F02F3/02Pistons  having means for accommodating or controlling heat expansion
    • F02F3/04Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Description

Bei ungekühlten und gekühlten Kolben tritt von dem @dürch die Verbrennungsgase beheizten Kolbenboden aus viel Wärme nach dem zylindrischen Teil des Kolbens über, der im allgemeinen die Kolbenringe trägt. Die Folge ist, daß bei höherer Wärmebelastung des Motors leicht die dem Verbrennungsraum am nächsten liegenden Kolbenringe festbrennen und bei größeren Kolben Rißbildungen an der Übergangsstelle zwischen Kolbenboden und dem zylindrischen Kolbenteil oder in einer der Nuten für die Kolbenringe eintreten. Es ist bekannt, diese Übergangsstelle so .dünn wie möglich zu machen, damit wenig Querschnitt für den Wärmeübergang vorhanden ist. Es ist ferner bekannt, bei Kolben mit nicht direkt gekühlten Kolbenböden in den zylindrischen Teil des Kolbens Nuten einzubringen, die den Wärmeübergang nach den Kolbenringen zu behindern.In the case of uncooled and cooled pistons, the @ through the combustion gases emerges heated piston head from a lot of heat to the cylindrical part of the piston over, which generally carries the piston rings. The consequence is that with higher heat load of the engine can easily burn the piston rings closest to the combustion chamber and with larger pistons, cracks at the transition point between the piston crown and enter the cylindrical piston part or in one of the grooves for the piston rings. It is known to make this transition point as thin as possible, so little Cross-section for heat transfer is available. It is also known in pistons with not directly cooled piston crowns in the cylindrical part of the piston grooves bring in that hinder the heat transfer to the piston rings.

Der Gegenstand der Erfindung besteht in der Gestaltung eines Teils der Kolbenwand zwischen dem Kolbenboden und den Kolbenringen alsFaltenrohr, was durch Vorsehen von Nuten in der Kolbenwand sowohl von außen als auch von innen her geschieht. Dadurch wird eine weitere Drosselung für den Wärmeübergang erzielt und insbesondere bei gekühlten Kolben wirkungsvoll die Kühlfläche vergrößert. Die Kolbenringe bleiben kälter, und der Motor kann höher belastet werden. Durch dieses so entstandene Faltenrohrstück ist der Kolben an dieser Stelle sehr viel elastischer. Risse können weniger leicht auftreten.The object of the invention is the design of a part the piston wall between the piston crown and the piston rings as a folded tube, what by providing grooves in the piston wall both from the outside and from the inside happens. As a result, a further throttling for the heat transfer is achieved and especially with cooled pistons, the cooling surface is effectively enlarged. The piston rings stay colder and the engine can be subjected to higher loads. Through this so created The piston is much more elastic at this point. Cracks can occur less easily.

Auch bei Zylinderdeckeln, die in den Zylinder hineinragen, ist diese Maßnahme von Wert, da durch das verhältnismäßig dünnwandige . Faltenrohrstück ebenso wie beim Kolben weniger Wärme an die Dichtungsstelle zwischen Zylinderdeckel und Zylinder übertreten kann und der Zylinderdeckel ebenfalls elastischer wird. Auch an Stellen, an denen im Zylinderdeckel Öffnungen für das Einsetzen von Ventilen vorhanden sind, ist dieselbe Maßnahme von Wert. Es bleiben die Dichtungsstellen kälter, und Risse im Zylinderdecke4 werden vermieden.This is also the case with cylinder covers that protrude into the cylinder Measure of value, as it is relatively thin-walled. Pleated pipe piece as well As with the piston, less heat is sent to the sealing point between the cylinder cover and Cylinder and the cylinder cover is also more elastic. Even in places with openings in the cylinder cover for inserting valves are present, the same measure is of value. The sealing points remain colder, and cracks in the cylinder roof4 are avoided.

In Abb. 1 ist der Kolben a, der die Kolbenringe b trägt, mit dem Faltenrohrstück c versehen, das aus einem Stück mit dem Kolben bestehen kann oder auch besonders aufgesetzt wird. In der Abbildung ist angenommen, daß die äußeren Nuten d und ebenso die inneren e durch Einstechen eines Ringes entstanden sind, der bei f und g mit dem Kolben a verschweißt ist. Der Zylinderdeckel h nach. Abb. 2 ist mit einer Öffnung i zur Aufnahme von Ventilen versehen. Er ist außen mit dem Faltenrohrstück k und innen mit dem Faltenrohrstück l versehen. Es ist angenommen, daß das Faltenrohrstück k in die oben kegelförmig ausgebildete Zylinderbüchse hineinreicht. Die Dichtungsstelle m, die den Zylinder gegen die Zylinderbüchse abdichtet, und ebenso die Dichtungsstelle n, die den Ventileinsatz abdichtet, bleiben durch diese Maßnahme kälter, und es werden Risse an den Übergangsstellen vermieden.In Fig. 1, the piston a, which carries the piston rings b, is provided with the folded tube piece c, which can consist of one piece with the piston or is specially fitted. In the figure it is assumed that the outer grooves d and also the inner e are created by piercing a ring which is welded to the piston a at f and g. The cylinder cover h after. Fig. 2 is provided with an opening i for receiving valves. It is provided on the outside with the folded tube piece k and on the inside with the folded tube piece l. It is assumed that the folded tube piece k extends into the cylinder liner which is conical at the top. The sealing point m, which seals the cylinder against the cylinder liner, and also the sealing point n, which seals the valve insert, remain colder as a result of this measure, and cracks at the transition points are avoided.

Besonders wirkungsvoll ist die Kühlung der Faltenrohre, wenn das Kühlmittel eine kreisende Bewegung ausführt, was durch bekannte Maßnahmen erreicht werden kann.The cooling of the folded tubes is particularly effective when the coolant executes a circular motion, which can be achieved by known measures.

Es sei bemerkt, daß die Einschaltung von faltenrohrartigen Bauelementen in die Wandungen, z. B. Zylinderwandungen, einer Brennkraftmaschine an sich bekannt ist. Die Verwirklichung dieses Konstruktionsprinzips an denjenigen Stellen eines Kolbens oder Zylinderdeckels, wie sie im vorausgehenden beschrieben worden sind, ist hingegen neu und bringt im Rahmen dieser Beschränkung der Erfindung die im vorausgehenden genannten besonderen und vorteilhaften Wirkungen mit sich.It should be noted that the inclusion of bellows-like components in the walls, e.g. B. cylinder walls, an internal combustion engine known per se is. The realization of this construction principle at those points of a Piston or cylinder cover, as they have been described above, is, however, new and brings the preceding within the scope of this limitation of the invention mentioned special and beneficial effects.

Claims (2)

PATENTANSPRÜCHE: i. Kolben und ebenso Zylinderdeckel eines Verbrennungsmotors, dadurch gekennzeichnet, daß zwischen dem Kolbenboden und den Kolbenringen (b) bzw. Zylinderdeckelboden und den Dichtungen am Zylinderdeckel (m und n) Übergangsstellen vorhanden sind, die als Faltenrohre (c, k, l) ausgebildet sind, die den Wärmeübergang behindern und die Verbindung zwischen Boden und dem.übrigen Teil elastischer gestalten. PATENT CLAIMS: i. Pistons and also the cylinder cover of an internal combustion engine, characterized in that there are transition points between the piston head and the piston rings (b) or cylinder cover base and the seals on the cylinder cover (m and n), which are designed as folded tubes (c, k, l) , which hinder the heat transfer and make the connection between the floor and the rest of the part more elastic. 2. Kolben und ebenso Zylinderdeckel nach Anspruch 1, dadurch gekennzeichnet, daß die Wandteile (c, k, l). mit den Nuten besonders eingesetzt oder eingeschweißt sind. Angezogene Druckschriften: Deutsche Patentschriften Nr. 733 931, 408 738, 380 8971 266 053; britische Patentschriften Nr. 448 054, 13 670 (19z3). Automobiltechnische Zeitschrift 1938, S. 325 bis 329.2. Piston and also cylinder cover according to claim 1, characterized in that the wall parts (c, k, l). are particularly inserted or welded with the grooves. Cited publications: German Patent Nos. 733 931, 408 738, 38 0 8971 266 0 53; British Patent Nos. 448 054, 13 670 (19z3). Automobiltechnische Zeitschrift 1938, pp. 325 to 329.
DER6678A 1951-09-13 1951-09-13 Pistons and cylinder covers for internal combustion engines Expired DE932463C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER6678A DE932463C (en) 1951-09-13 1951-09-13 Pistons and cylinder covers for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER6678A DE932463C (en) 1951-09-13 1951-09-13 Pistons and cylinder covers for internal combustion engines

Publications (1)

Publication Number Publication Date
DE932463C true DE932463C (en) 1955-09-01

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DER6678A Expired DE932463C (en) 1951-09-13 1951-09-13 Pistons and cylinder covers for internal combustion engines

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DE (1) DE932463C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306340A1 (en) * 1975-03-29 1976-10-29 Kloeckner Humboldt Deutz Ag CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE WITH ALTERNATIVE STRAIGHT PISTONS
DE2717028A1 (en) * 1977-04-18 1978-10-26 Elsbett L PISTON FOR PISTON PISTON INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL ENGINES
WO1992018762A1 (en) * 1991-04-10 1992-10-29 Elsbett L Internal-combustion engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE266053C (en) *
GB191313670A (en) * 1913-06-13 1914-04-23 Frederick Peel Improvements in the Cylinders of Internal Combustion Engines.
DE380897C (en) * 1917-09-06 1923-09-14 William Joseph Still Cylinder for stationary internal combustion engines
DE408738C (en) * 1925-01-24 Eric Brown Internal combustion piston engine
GB448054A (en) * 1935-01-07 1936-06-02 Albert George Elliott Improvements in liquid cooled internal combustion engines
DE733931C (en) * 1940-11-23 1943-04-05 Sulzer Ag Pistons for internal combustion engines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE266053C (en) *
DE408738C (en) * 1925-01-24 Eric Brown Internal combustion piston engine
GB191313670A (en) * 1913-06-13 1914-04-23 Frederick Peel Improvements in the Cylinders of Internal Combustion Engines.
DE380897C (en) * 1917-09-06 1923-09-14 William Joseph Still Cylinder for stationary internal combustion engines
GB448054A (en) * 1935-01-07 1936-06-02 Albert George Elliott Improvements in liquid cooled internal combustion engines
DE733931C (en) * 1940-11-23 1943-04-05 Sulzer Ag Pistons for internal combustion engines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2306340A1 (en) * 1975-03-29 1976-10-29 Kloeckner Humboldt Deutz Ag CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE WITH ALTERNATIVE STRAIGHT PISTONS
DE2717028A1 (en) * 1977-04-18 1978-10-26 Elsbett L PISTON FOR PISTON PISTON INTERNAL COMBUSTION ENGINES, ESPECIALLY DIESEL ENGINES
WO1992018762A1 (en) * 1991-04-10 1992-10-29 Elsbett L Internal-combustion engine

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