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 circumferenceInfo
- 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
- Authority
- DE
- 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
Links
Classifications
-
- 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
Landscapes
- 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
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)
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 |
Family
ID=6019971
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19772743350 Ceased 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 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2743350A1 (en) |
Cited By (8)
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)
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 |
-
1977
- 1977-09-27 DE DE19772743350 patent/DE2743350A1/en not_active Ceased
Patent Citations (3)
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)
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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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAM | Search report available | ||
OC | Search report available | ||
8110 | Request for examination paragraph 44 | ||
8131 | Rejection |