DE4410141B4 - Closing of production-related holes in pistons with cooling channel - Google Patents

Closing of production-related holes in pistons with cooling channel Download PDF

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Publication number
DE4410141B4
DE4410141B4 DE19944410141 DE4410141A DE4410141B4 DE 4410141 B4 DE4410141 B4 DE 4410141B4 DE 19944410141 DE19944410141 DE 19944410141 DE 4410141 A DE4410141 A DE 4410141A DE 4410141 B4 DE4410141 B4 DE 4410141B4
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Germany
Prior art keywords
piston
production
bore
closing
cooling channel
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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 - Fee Related
Application number
DE19944410141
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German (de)
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DE4410141A1 (en
Inventor
Reinhold Fuchs
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Mahle GmbH
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Mahle GmbH
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Priority to DE19944410141 priority Critical patent/DE4410141B4/en
Publication of DE4410141A1 publication Critical patent/DE4410141A1/en
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Publication of DE4410141B4 publication Critical patent/DE4410141B4/en
Anticipated expiration legal-status Critical
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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 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/10—Cooling by flow of coolant through pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/08—Constructional features providing for lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P2003/006—Liquid cooling the liquid being oil
    • 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 

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

Abstract

Kolben für einen Verbrennungsmotor mit einem Hohlraum für Kühl oder Schmiermittel, in welchen herstellungsbedingt mindestens eine, in Kolbenlängsachse verlaufende, bei der Herstellung des Kolbens gebildete Bohrung (2) mündet, dadurch gekennzeichnet, dass zum Verschließen des offenen Endes (3) der Bohrung (2) eine geschlitzte Leichtspannhülse (5) vorgesehen ist, die in einer Bohrung (4) liegt, die die zu verschließende Bohrung (2) senkrecht durchdringt.piston for one Internal combustion engine with a cavity for cooling or lubricant, in which At least one, running in the piston longitudinal axis, at the Production of the piston formed hole (2) opens, characterized that for closing of the open end (3) of the bore (2) a slotted light-tensioning sleeve (5) is provided, which lies in a bore (4), which closes the hole to be closed (2) penetrates vertically.

Figure 00000001
Figure 00000001

Description

Die Erfindung betrifft einen Kolben für Verbrennungsmotoren mit den Merkmalen nach dem Oberbegriff des Anspruchs 1.The The invention relates to a piston for internal combustion engines with the Features according to the preamble of claim 1.

Aus der Praxis sind derartige Kolben bekannt, bei denen auf Höhe der Kolbenringpartie ein umlaufender, ringförmiger Kühlkanal oder zwei getrennte Kühlkanäle mit nur den halben Umfang des Kolbens entsprechend DE 1 725 611 U vorgesehen sind, in den zur Zu- und Abfuhr des Kühlmittels in Kolbenlängsachse verlaufende Bohrungen münden. Die Zufuhr des Kühlmittels erfolgt hierbei zwangsweise über das Kolbenpleuel, den hohlen Kolbenbolzen, entsprechende Aussparungen in den Kolbenbolzennaben und den oben angesprochenen Zulaufbohrungen, die mit den Aussparungen in den Kolbenbolzennaben in Verbindung stehen. Um hierbei ein Austreten des Kühlmittels aus diesen Bohrungen zu verhindern, muss das durch die Herstellung der Bohrung bedingte offene Ende im Bereich der Kolbenbolzennabe verschlossen werden. Der Verschluss kann, wie in DE 1 033 954 B beschrieben, durch eine Schweißnaht oder nach der DE 37 35 590 C1 mittels Spiralstiften erfolgen oder wird durch einen eingeklebten Gewindestift erreicht.From practice such pistons are known in which at the height of the piston ring section a circumferential, annular cooling channel or two separate cooling channels with only half the circumference of the piston accordingly DE 1 725 611 U are provided, open into extending to the supply and discharge of the coolant in the piston longitudinal axis bores. The supply of the coolant in this case takes place forcibly via the Kolbenpleuel, the hollow piston pin, corresponding recesses in the piston pin bosses and the above-mentioned inlet bores, which are in communication with the recesses in the piston pin bosses. In order to prevent leakage of the coolant from these holes, the conditional by the production of the bore open end in the region of the piston pin hub must be closed. The closure can, as in DE 1 033 954 B described by a weld or after the DE 37 35 590 C1 by means of spiral pins or is achieved by a glued threaded pin.

Nachteilig an einer solchen Ausführung ist ein erhöhter Arbeits- und Montageaufwand, da die Festigkeit, insbesondere der Verklebung, noch zusätzlich geprüft werden muss.adversely on such an execution is an elevated one Labor and assembly costs, since the strength, in particular the Gluing, in addition checked must become.

Problem der vorliegenden Erfindung ist es daher, auf konstruktiv einfach Weise ein Mittel zu finden, das mit geringem Arbeits- und Montageaufwand das Verschließen der herstellungsbedingten zum Hohlraum führenden Bohrungen ermöglicht und einen absolut sicheren Halt gewährleistet.problem The present invention is therefore to be structurally simple Way to find a means that with low labor and assembly costs the close allows the production-related holes leading to the cavity and ensures a completely secure hold.

Gelöst wird dieses Problem mit einem Sperrmittel mit den Merkmalen des Anspruchs 1.Is solved This problem with a locking means with the features of the claim 1.

Die Erfindung ist anhand eines bevorzugten, in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The The invention is based on a preferred, shown in the drawing Embodiment explained in more detail.

Es zeigtIt shows

1 einen Ausschnitt eines Kolbens mit der erfindungsgemäßen Maßnahme in Seitenansicht im Schnitt 1 a section of a piston with the inventive measure in side view in section

2 eine Unteransicht der 1 2 a bottom view of the 1

3 einen Schnitt III-III gem. 1. 3 a section III-III gem. 1 ,

Ein einteiliger Kolben 1 (nur ausschnittsweise gezeichnet) für einen Verbrennungsmotor, insbesondere Dieselmotor, weist im Bereich hinter der Ringpartie zur Kühlung in seinem Kolbenkopf einen ringförmig umlaufenden Kühlkanal mit entsprechendem Zu- und Ablauf für das Kühlöl auf.A one-piece piston 1 (Only partially drawn) for an internal combustion engine, in particular diesel engine, has in the area behind the ring section for cooling in its piston head an annular peripheral cooling channel with a corresponding inlet and outlet for the cooling oil.

Zur Zuführung des Kühlöls ist mindestens eine in Kolben längsachse verlaufende Bohrung 2 vorgesehen, die im Kolbenbolzennabenbereich herstellungsbedingt ein offendes Ende 3 aufweist. Um eine zwangsweise Kühlölzuführung zum Kühlkanal über Kolbenpleuel, Kolbenbolzen und Aussparungen in den Kolbenbolzennaben, mit denen die Bohrung 2 in Verbindung steht, zu gewährleisten, muß die Bohrung 2 an ihrem durch die Herstellung bedingten offenen Ende 3 verschlossen werden.For supplying the cooling oil is at least one piston longitudinal axis extending bore 2 provided, the production in the piston pin hub area due to an offending end 3 having. To a forced cooling oil supply to the cooling channel via Kolbenpleuel, piston pin and recesses in the piston pin bosses with which the bore 2 To ensure the bore must be 2 at their production-related open end 3 be closed.

Um die Bohrung 2 zu verschließen, ist senkrecht zu dieser Bohrung 2 und sie durchdringend eine Bohrung 4 vorgesehen – deren Durchmesser gleich oder geringfügig größer als der der Bohrung 2 ist –, in der als Sperrmittel eine geschlitzte Leichtspannhülse 5 (nach DIN 7346) fest eingebracht ist. Da die Leichtspannhülse 5 quer zur Hubrichtung des Kolbens 1 angeordnet ist, haben die Fliehkräfte bezogen auf die Hubkolbenbewegungen keine Einwirkungen in Bewegungsrichtung der Leichtspannhülse 5, so daß diesbezüglich keine weiteren Sicherheitsvorkehrungen zu treffen sind.Around the hole 2 to close, is perpendicular to this hole 2 and she pervades a hole 4 provided - whose diameter is equal to or slightly larger than that of the bore 2 is - in which as a blocking means a slotted light clamping sleeve 5 (according to DIN 7346) is firmly inserted. Because the light clamping sleeve 5 transverse to the stroke direction of the piston 1 is arranged, the centrifugal forces related to the Hubkolbenbewegungen no effects in the direction of movement of the light clamping sleeve 5 so that no further safety precautions need to be taken in this regard.

Mit einer derartigen Ausführung wird daher auf konstruktiv einfache Weise bei einem Kolben für einen Verbrennungsmotor ein Verschluß für die o.a. Bohrung erreicht, der mit einfachen Mitteln ohne großen Aufwand montiert werden kann.With such an embodiment is therefore in a structurally simple manner in a piston for a Internal combustion engine a closure for the o.a. drilling achieved, which can be mounted with simple means without much effort can.

Claims (1)

Kolben für einen Verbrennungsmotor mit einem Hohlraum für Kühl oder Schmiermittel, in welchen herstellungsbedingt mindestens eine, in Kolbenlängsachse verlaufende, bei der Herstellung des Kolbens gebildete Bohrung (2) mündet, dadurch gekennzeichnet, dass zum Verschließen des offenen Endes (3) der Bohrung (2) eine geschlitzte Leichtspannhülse (5) vorgesehen ist, die in einer Bohrung (4) liegt, die die zu verschließende Bohrung (2) senkrecht durchdringt.Piston for an internal combustion engine with a cavity for coolant or lubricant, in which, as a result of production, at least one bore extending in the piston longitudinal axis and formed in the production of the piston (US Pat. 2 ), characterized in that for closing the open end ( 3 ) of the bore ( 2 ) a slotted light clamping sleeve ( 5 ) provided in a bore ( 4 ), which closes the bore ( 2 ) penetrates vertically.
DE19944410141 1994-03-24 1994-03-24 Closing of production-related holes in pistons with cooling channel Expired - Fee Related DE4410141B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944410141 DE4410141B4 (en) 1994-03-24 1994-03-24 Closing of production-related holes in pistons with cooling channel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944410141 DE4410141B4 (en) 1994-03-24 1994-03-24 Closing of production-related holes in pistons with cooling channel

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DE4410141A1 DE4410141A1 (en) 1995-09-28
DE4410141B4 true DE4410141B4 (en) 2008-05-08

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960913A1 (en) 1999-12-17 2001-06-21 Mahle Gmbh Bottom cover of a cold room for pistons of internal combustion engines

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1725611U (en) * 1956-04-21 1956-07-05 Mahle Kg PISTONS FOR THERMALLY HIGHLY LOADED COMBUSTION MACHINES.
DE1033954B (en) * 1955-08-18 1958-07-10 Maschf Augsburg Nuernberg Ag Cooled light alloy piston
DE1075379B (en) * 1960-02-11 Mahle Komm.-Ges., Stuttgart-Bad Cannstatt Light metal pistons for internal combustion engines with coolant channels and process for their production
DE1099797B (en) * 1958-05-09 1961-02-16 Daimler Benz Ag Device for cooling pistons for internal combustion engines
DE2530736B2 (en) * 1975-07-10 1978-07-27 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Thermally loaded component of an internal combustion engine with a hot wall
DE2829494A1 (en) * 1978-07-05 1980-01-17 Mahle Gmbh OIL COOLED PISTON FOR COMBUSTION ENGINES
GB2031112A (en) * 1978-09-06 1980-04-16 Nohab Diesel Ab Gudgeon pin
DE3735590C1 (en) * 1987-10-21 1989-01-05 Mahle Gmbh Closing of holes in cast pistons resulting from the manufacturing process
DE3919872A1 (en) * 1989-06-19 1990-12-20 Mahle Gmbh SUBMERSIBLE PISTON FOR COMBUSTION ENGINES WITH A PISTON HEAD FLOODED WITH COOLING OIL

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075379B (en) * 1960-02-11 Mahle Komm.-Ges., Stuttgart-Bad Cannstatt Light metal pistons for internal combustion engines with coolant channels and process for their production
DE1033954B (en) * 1955-08-18 1958-07-10 Maschf Augsburg Nuernberg Ag Cooled light alloy piston
DE1725611U (en) * 1956-04-21 1956-07-05 Mahle Kg PISTONS FOR THERMALLY HIGHLY LOADED COMBUSTION MACHINES.
DE1099797B (en) * 1958-05-09 1961-02-16 Daimler Benz Ag Device for cooling pistons for internal combustion engines
DE2530736B2 (en) * 1975-07-10 1978-07-27 Maschinenfabrik Augsburg-Nuernberg Ag, 8900 Augsburg Thermally loaded component of an internal combustion engine with a hot wall
DE2829494A1 (en) * 1978-07-05 1980-01-17 Mahle Gmbh OIL COOLED PISTON FOR COMBUSTION ENGINES
GB2031112A (en) * 1978-09-06 1980-04-16 Nohab Diesel Ab Gudgeon pin
DE3735590C1 (en) * 1987-10-21 1989-01-05 Mahle Gmbh Closing of holes in cast pistons resulting from the manufacturing process
DE3919872A1 (en) * 1989-06-19 1990-12-20 Mahle Gmbh SUBMERSIBLE PISTON FOR COMBUSTION ENGINES WITH A PISTON HEAD FLOODED WITH COOLING OIL

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8339 Ceased/non-payment of the annual fee