AT217785B - Internal combustion engine with oil-cooled piston - Google Patents

Internal combustion engine with oil-cooled piston

Info

Publication number
AT217785B
AT217785B AT210960A AT210960A AT217785B AT 217785 B AT217785 B AT 217785B AT 210960 A AT210960 A AT 210960A AT 210960 A AT210960 A AT 210960A AT 217785 B AT217785 B AT 217785B
Authority
AT
Austria
Prior art keywords
piston
connecting rod
combustion engine
internal combustion
piston crown
Prior art date
Application number
AT210960A
Other languages
German (de)
Inventor
Siegfried Dipl Ing Pachernegg
Hans Dipl Ing Dr Techn List
Original Assignee
Hans Dipl Ing Dr Techn List
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 Hans Dipl Ing Dr Techn List filed Critical Hans Dipl Ing Dr Techn List
Priority to AT210960A priority Critical patent/AT217785B/en
Application granted granted Critical
Publication of AT217785B publication Critical patent/AT217785B/en

Links

Classifications

    • 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
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • 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
    • 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F01M2001/083—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating cylinders

Landscapes

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

Description

  

   <Desc/Clms Page number 1> 
 



  Brennkraftmaschine mit   ölgekühltem   Kolben 
 EMI1.1 
 

 <Desc/Clms Page number 2> 

 



   Der Boden des Kolbens enthält den Brennraum 1, der von der Rotationsfläche 2 begrenzt ist. Der Mittelteil des Kolbenbodens 3 ist eine thermisch hoch belastete Stelle des Kolbens. Zur Wärmeableitung wird durch die Bohrung 4 der Pleuelstange 6 Schmiermittel in den zwischen dem Pleuelstangenauge 6'und dem Kolbenboden 3 befindlichen Spalt 7 eingebracht. Der Spalt wird durch   Zylinderflächen   9, 10 begrenzt, die einerseits vom Kolbenboden 3 und anderseits vom Pleuelstangenauge 6'gebildet werden und deren Achsen mit der des Kolbenbolzens 8 zusammenfallen.

   Durch die pendelnde Bewegung der Pleuelstange um die in Fig.   l   dargestellte Mittellage bestreicht die Mündung 5 des Kanals 4 bei jeder Kurbelwellenumdrehung die an   der Kolbenbodeninnenseite   liegende Zylinderfläche 9, wodurch das aus der Bohrung 4austretende Schmiermittel in den Spalt 7 zwischen dem Pleuelstangenauge 6'und Kolbenboden 3 verteilt wird und nach Erfüllung seiner   Kühlfunktion   am Rand der Spaltfläche austritt. 



   Im Rahmen der Erfindung sind mannigfaltige Abänderungen des beschriebenen Ausbildungsbeispieles einer Kolbenkühlung möglich. So können selbstverständlich die Achsen der beiden Zylinderflächen an der Kolbenbodeninnenseite und an der Aussenseite des Pleuelstangenauges im Abstand voneinander angeordnet sein, so dass ein im Schnitt senkrecht zur Kolbenbolzenachse keilförmig zulaufender Spalt entsteht. Eine solche Ausbildung wird insbesondere dann vorzusehen sein, wenn die Wärmebelastung mit Bezug auf die Kolbenbolzenachse unsymmetrisch verteilt ist und sich deshalb die erforderliche Kühlwirkung über den Schwenkbereich, den die Mündung des Spritzmundstückes durchläuft, verändert.

   Die Dicke des Spaltes zwischen der die Austrittsöffnung enthaltenden Fläche des Pleuelstangenauges und der zu kühlenden Fläche des Kolbenbodens soll mindestens 0,   2%   und höchstens   30/0   des Kolbendurchmessers betragen.



   <Desc / Clms Page number 1>
 



  Internal combustion engine with oil-cooled piston
 EMI1.1
 

 <Desc / Clms Page number 2>

 



   The bottom of the piston contains the combustion chamber 1, which is delimited by the surface of rotation 2. The middle part of the piston head 3 is a thermally highly stressed point on the piston. For heat dissipation, lubricant is introduced through the bore 4 of the connecting rod 6 into the gap 7 located between the connecting rod eye 6 ′ and the piston head 3. The gap is delimited by cylinder surfaces 9, 10 which are formed on the one hand by the piston crown 3 and on the other hand by the connecting rod eye 6 ′ and whose axes coincide with that of the piston pin 8.

   As a result of the oscillating movement of the connecting rod around the central position shown in FIG 3 is distributed and exits after fulfilling its cooling function at the edge of the gap area.



   Various modifications of the described exemplary embodiment of piston cooling are possible within the scope of the invention. The axes of the two cylinder surfaces on the inside of the piston crown and on the outside of the connecting rod eye can of course be arranged at a distance from one another, so that a wedge-shaped gap is created in the section perpendicular to the piston pin axis. Such a design should be provided in particular if the heat load is distributed asymmetrically with respect to the piston pin axis and therefore the required cooling effect changes over the pivoting range through which the mouth of the injection nozzle passes.

   The thickness of the gap between the surface of the connecting rod eye containing the outlet opening and the surface of the piston crown to be cooled should be at least 0.2% and at most 30/0 of the piston diameter.

Claims (1)

PATENTANSPRUCH : Brennkraftmaschine mit im Kolbenboden angeordneten Brennraum, dessen Kühlung durch Schmieröl erfolgt, das durch die Pleuelstange geleitet und aus mindestens einem an der dem Kolbenboden zugekehrten Fläche des Pleuelstangenauges angeordneten Spritzmundstück gegen den Kolbenboden gespritzt wird, dadurch gekennzeichnet, dass das Spritzmundstück in an sich bekannter Weise bis nahe an die Kolbenbodeninnenseite herangeführt ist. und dass der das Spritzmundstück bildende Teil, dessen die Austrittsöffnung (5) des Kanals (4) enthaltende Fläche (10), quer zur Achse des Kolbenbolzens (8) gemessen, breiter ist als die von der Austrittsöffnung im Betrieb bestrichene Wegstrecke, mit der Pleuelstange einstückig ausgebildet ist. PATENT CLAIM: Internal combustion engine with a combustion chamber arranged in the piston crown, which is cooled by lubricating oil which is passed through the connecting rod and is injected against the piston crown from at least one injection nozzle arranged on the surface of the connecting rod eye facing the piston crown, characterized in that the injection nozzle in a manner known per se up to is brought close to the inside of the piston crown. and that the part forming the injection nozzle, whose surface (10) containing the outlet opening (5) of the channel (4), measured transversely to the axis of the piston pin (8), is wider than the distance covered by the outlet opening during operation, with the connecting rod is formed in one piece.
AT210960A 1960-03-18 1960-03-18 Internal combustion engine with oil-cooled piston AT217785B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT210960A AT217785B (en) 1960-03-18 1960-03-18 Internal combustion engine with oil-cooled piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT210960A AT217785B (en) 1960-03-18 1960-03-18 Internal combustion engine with oil-cooled piston

Publications (1)

Publication Number Publication Date
AT217785B true AT217785B (en) 1961-10-25

Family

ID=3527952

Family Applications (1)

Application Number Title Priority Date Filing Date
AT210960A AT217785B (en) 1960-03-18 1960-03-18 Internal combustion engine with oil-cooled piston

Country Status (1)

Country Link
AT (1) AT217785B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005686A (en) * 1975-06-26 1977-02-01 J. Wizemann & Co. Piston-pin for liquid cooled pistons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005686A (en) * 1975-06-26 1977-02-01 J. Wizemann & Co. Piston-pin for liquid cooled pistons

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