DE2743350A1 - Reciprocating IC engine piston - is guided in cylinder by two axially spaced sets of oil pressure pockets around piston circumference - Google Patents

Reciprocating IC engine piston - is guided in cylinder by two axially spaced sets of oil pressure pockets around piston circumference

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Publication number
DE2743350A1
DE2743350A1 DE19772743350 DE2743350A DE2743350A1 DE 2743350 A1 DE2743350 A1 DE 2743350A1 DE 19772743350 DE19772743350 DE 19772743350 DE 2743350 A DE2743350 A DE 2743350A DE 2743350 A1 DE2743350 A1 DE 2743350A1
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Germany
Prior art keywords
piston
oil
guided
cylinder
circumference
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.)
Ceased
Application number
DE19772743350
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German (de)
Inventor
Klaus Bruchner
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19772743350 priority Critical patent/DE2743350A1/en
Publication of DE2743350A1 publication Critical patent/DE2743350A1/en
Ceased legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J1/00Pistons; Trunk pistons; Plungers
    • F16J1/09Pistons; Trunk pistons; Plungers with means for guiding fluids

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

Abstract

The combustion engine piston is guided in its cylinder by means of hydrostatic pressure in two axially spaced sets of pressure pockets (A) equally spaced around the circumference of the piston. The seal between the combustion chamber and the crank case may be effected by pressurised oil. The combustion gases may be separated from the pressurised oil by a piston ring (R) which also serves as a scraper ring. The return flow of the oil in the upper area of the piston may be controlled by the piston ring (R).

Description

Patentanmeldung Patent application

Hydrostatisch geführter Kolben Sie Erfindung bezieht sich auf den Kolben einer Brennkraftmaschine, der hyarostatisch im Zylinder gefithrt wird, wobei die Abdichtung des Verbrennungsraumes gegenüber dem Kurbelgehäuse ebenfalls von dem Drucköl übernommen wird. Hydrostatically Guided Piston You invention relates to the Piston of an internal combustion engine which is hyarostatically guided in the cylinder, whereby the sealing of the combustion chamber with respect to the crankcase also from the pressure oil is taken over.

Hiercturch besteht die Mölichkeit, die Anzahl der Kolbenringe bis auf einen Steuerring zu reduzieren, wodurch sich eine erhebliche Verbesserung des mechanischen Wirkungsgrades ergibt.This makes it possible to increase the number of piston rings up to to a control ring, which significantly improves the mechanical efficiency results.

Bei herkömmlichen Kolben beträgt die mechanische Verlustarbeit durch die Kolbenringe allein bis zu 5C % der gesamten mechanischen Verluste.With conventional pistons, the mechanical work loss is through the piston rings alone account for up to 5C% of the total mechanical losses.

Durch die hydrostatische Führung des Kolbens entfällt zudem die mechanische Beruhrung zwischen Kolben und Zylinderwand, wodurch zusätzliche Reibarbeit vermieden wird.The hydrostatic guidance of the piston also eliminates the mechanical Contact between piston and cylinder wall, which avoids additional friction work will.

Die Abdichtung des Verbrennungsraumes gegenüber dem Kurbelgehause mittels Drucköl führt dazu, daß die Leckverluste entfallen. Hierdurch ergibt sich bei gleicher Energiezufuhr ein Anstieg der spezifischen Arbeit we.The sealing of the combustion chamber against the crankcase by means of pressure oil leads to the fact that the leakage losses are eliminated. This results in with the same energy input, an increase in the specific work we.

Da sich durch die hydrostatische Führung die Fiíhrungsaufgahe des Kolbenhemdes ertibrigt, kann der Kolben kürzer gebaut werden. ties führt zu einer geringeren Masse des Kolbens und hat die Verminderung der oszillierenden Massen bzw. eine Minderung der oszillierenden Massenkräfte zur Folge.Since the management tasks of the If the piston skirt is finished, the piston can be made shorter. ties leads to one lower mass of the piston and has the reduction of the oscillating masses or a reduction in the oscillating inertia forces.

Die benötigte Arheit zur Erzeugung des Öldruckes, die vom Motor aufzubringen ist, ist erheblich geringer als die mechanische Verlustarbeit am Kolben und an den Kolbenringen. Dabei wird das Drucköl den einzelnen am Umfang verteilten Stützquellen (Taschen) A iiber das (z. B.) Pleuel, en Kolbenbolzen, die senkrechten Verteilungsbohrungen V und die Drosseln D zugeführt.The required Arheit to generate the oil pressure to be applied by the engine is considerably less than the mechanical loss work on the piston and on the Piston rings. Included the pressure oil is distributed to the individual on the circumference Sources of support (pockets) A over the (e.g.) connecting rod, gudgeon pin, the vertical Distribution holes V and the throttles D supplied.

Die Fiihrung des Kolbens wirö durch 2 in axialer Richtung versetzter Reihen von <laschen ermöglicht. Mine Verlagerung des Kolbens durch äußere Kräfte verändert das Stiel zwischen Kolben und Zylinderwand. Durch einen kleiner werdenden Spalt fließt die gleiche Ölmenge nur unter höheren Druck. Die Tragfähigkeit des Kolbens erhöht sich. Gleichzeitig sinkt der Druck in der gegenüberliegenden Tasche, da dort der Spalt größer wird. Der durch die Normalkräfte belastete Kolben bewegt sich in eine neue Gleichgewichtslage. Das aus den Drucktaschen über die Stege S abfließende öl gelangt über die Zylinderwand bzw. die Kolbeninnenfläche zurück in die Ölwanne. Im oberen Teil des Kolbens ist ein Steuerring R angeordnet, der die Steuerung des Ölrücklaufs in dieser Zone übernimmt. Das unter Druck aus den Taschen A nach oben strömende Öl bewegt den Ring in der Nut nach oben, solange der vom Verbrennungsraum auf den Ring R wirkende Druck kleiner als der Öldruck ist. Bei dieser Stellung des Steuerringes R fließt das Drucköl über die Bohrungen B zurück in den Ölsumpf.The guide of the piston is offset by 2 in the axial direction Rows of <tabs enabled. Mine displacement of the piston due to external forces changes the stem between the piston and cylinder wall. By a shrinking one Gap, the same amount of oil only flows under higher pressure. The carrying capacity of the Piston increases. At the same time, the pressure in the opposite pocket drops, because there the gap becomes larger. The piston, loaded by normal forces, moves into a new equilibrium position. That from the pressure pockets via the webs S draining oil returns to the cylinder wall or the inner surface of the piston the oil pan. In the upper part of the piston, a control ring R is arranged, which the Control of the oil return in this zone takes over. That under pressure from the pockets A flowing oil moves the ring up in the groove as long as that from the combustion chamber pressure acting on ring R is less than the oil pressure. In this position of the Control ring R, the pressure oil flows back through the bores B into the oil sump.

Vergrößert sich der Verdichtungs- (Verbrennungs-) druck gegenüber dem vorhandenen Öldruck, wird der Ring auf die untere Auflagefläche in der Nut gepreßt und verschließt nun die Rückströmbohrungen B. Der Kolbenring gewährt gleichzeitig die Trennung zwischen dem Drucköl und den heißen Verbrennungsgasen.The compression (combustion) pressure increases compared to the existing oil pressure, the ring is pressed onto the lower contact surface in the groove and now closes the return flow bores B. The piston ring grants at the same time the separation between the pressurized oil and the hot combustion gases.

Bei der Abwärtsbewegung des Kolbens übernimmt der Steuerring R die Aufgabe des Ölabstreifens von der Zylinderwand.When the piston moves downwards, the control ring R takes over Task of wiping oil from the cylinder wall.

Claims (5)

2at ent ans nriche 1. Kolben einer Brennkraftmaschine dadurch gekennzeichnet, daß dieser mittels zweier, in axialer Richtung versetzter, Reihen von gleichmäßig am Umfang verteilter Drucktaschen hydrostatisch geführt wird. 2at ent ans nriche 1st piston of an internal combustion engine characterized that this by means of two, staggered in the axial direction, rows of evenly is guided hydrostatically on the circumference of distributed pressure pockets. 2. Kolben nach Anspruch 1 dadurch gekennzeichnet, daß din Ahdichtung des Brennraumes gegenüber dem Kurbelgehäuse vom Drucköl übernommen wird. 2. Piston according to claim 1, characterized in that din Ahdichtung of the combustion chamber compared to the crankcase is taken over by the pressurized oil. 3. Kolben nach Anspruch 1 und 2 dadurch gekennzeichnet, daX tie Trennung des Verbrennungsgases vorn Drucköl durch einen Steuerring erfolgt, der gleichzeitig als Ölabstreifring dient. 3. Piston according to claim 1 and 2, characterized in that there is a separation of the combustion gas in front of the pressure oil takes place through a control ring, which at the same time serves as an oil control ring. 4. Kolben nach Anspruch 1, 2 und 3 dadurch gekennzeichnet, daP die Steuerung des Ölrückflusses im oberen Bereich des Kolbens durch den Steuerring erfolgt. 4. Piston according to claim 1, 2 and 3, characterized in that the daP The oil return flow is controlled by the control ring in the upper area of the piston. 5. Kolben nach Anspruch 1, 2, 3 und 4 dadurch gekennzeichnet, daL3 eine Anwendung auch in Arbeitsmaschinen m(jglich ist. 5. Piston according to claim 1, 2, 3 and 4, characterized in that daL3 an application in work machines is also possible.
DE19772743350 1977-09-27 1977-09-27 Reciprocating IC engine piston - is guided in cylinder by two axially spaced sets of oil pressure pockets around piston circumference Ceased DE2743350A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772743350 DE2743350A1 (en) 1977-09-27 1977-09-27 Reciprocating IC engine piston - is guided in cylinder by two axially spaced sets of oil pressure pockets around piston circumference

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772743350 DE2743350A1 (en) 1977-09-27 1977-09-27 Reciprocating IC engine piston - is guided in cylinder by two axially spaced sets of oil pressure pockets around piston circumference

Publications (1)

Publication Number Publication Date
DE2743350A1 true DE2743350A1 (en) 1979-04-05

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DE (1) DE2743350A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331108A (en) * 1976-11-18 1982-05-25 Collins Brian S Radial engine
US4359973A (en) * 1979-08-09 1982-11-23 Honda Giken Kogyo Kabushiki Kaisha Oiling system for piston of internal combustion engine
DE3632799A1 (en) * 1986-09-26 1987-07-09 Josef Dipl Ing Eppinger Internal combustion engine with prolonged expansion
DE3812479A1 (en) * 1988-04-15 1989-10-26 Martin Ziegler Piston for an internal combustion engine
DE3917755A1 (en) * 1988-05-31 1990-01-18 Atsugi Motor Parts Co Ltd PISTON FOR A COMBUSTION ENGINE
DE9108696U1 (en) * 1991-07-15 1991-08-29 Alcan Deutschland GmbH, 3400 Göttingen Pistons for internal combustion engines
DE10117932A1 (en) * 2001-04-10 2002-10-17 Mahle Gmbh Piston for an internal combustion engine comprises an oil discharge channel leading upward at an angle away from an oil pocket
DE10255732A1 (en) * 2002-11-29 2004-06-09 Mahle Gmbh Pin hub of a piston for an internal combustion engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815733A (en) * 1917-11-30 1931-07-21 Cleveland Trust Co Piston
CH443827A (en) * 1963-01-25 1967-09-15 Thoma Hans Prof Ing Dr Arrangement for the lubrication of a piston acted upon by liquid, in particular the piston of a hydrostatic transmission
DE1264906B (en) * 1960-02-02 1968-03-28 Heinrich Scheibengraf Piston ring-free sealing of the compression chamber of reciprocating piston engines for gaseous media

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1815733A (en) * 1917-11-30 1931-07-21 Cleveland Trust Co Piston
DE1264906B (en) * 1960-02-02 1968-03-28 Heinrich Scheibengraf Piston ring-free sealing of the compression chamber of reciprocating piston engines for gaseous media
CH443827A (en) * 1963-01-25 1967-09-15 Thoma Hans Prof Ing Dr Arrangement for the lubrication of a piston acted upon by liquid, in particular the piston of a hydrostatic transmission

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331108A (en) * 1976-11-18 1982-05-25 Collins Brian S Radial engine
US4359973A (en) * 1979-08-09 1982-11-23 Honda Giken Kogyo Kabushiki Kaisha Oiling system for piston of internal combustion engine
DE3632799A1 (en) * 1986-09-26 1987-07-09 Josef Dipl Ing Eppinger Internal combustion engine with prolonged expansion
DE3812479A1 (en) * 1988-04-15 1989-10-26 Martin Ziegler Piston for an internal combustion engine
DE3917755A1 (en) * 1988-05-31 1990-01-18 Atsugi Motor Parts Co Ltd PISTON FOR A COMBUSTION ENGINE
US5042364A (en) * 1988-05-31 1991-08-27 Atsugi Motor Parts Company, Limited Piston structure for internal combustion engine
DE9108696U1 (en) * 1991-07-15 1991-08-29 Alcan Deutschland GmbH, 3400 Göttingen Pistons for internal combustion engines
DE10117932A1 (en) * 2001-04-10 2002-10-17 Mahle Gmbh Piston for an internal combustion engine comprises an oil discharge channel leading upward at an angle away from an oil pocket
DE10255732A1 (en) * 2002-11-29 2004-06-09 Mahle Gmbh Pin hub of a piston for an internal combustion engine
US7278390B2 (en) 2002-11-29 2007-10-09 Mahle Gmbh Piston-pin boss of a piston for an internal combustion engine

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