EP0705968B1 - Kolben für Brennkraftmaschinen - Google Patents
Kolben für Brennkraftmaschinen Download PDFInfo
- Publication number
- EP0705968B1 EP0705968B1 EP95111387A EP95111387A EP0705968B1 EP 0705968 B1 EP0705968 B1 EP 0705968B1 EP 95111387 A EP95111387 A EP 95111387A EP 95111387 A EP95111387 A EP 95111387A EP 0705968 B1 EP0705968 B1 EP 0705968B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- gudgeon
- webs
- pin
- skirt
- 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 - Lifetime
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 241001125877 Gobio gobio Species 0.000 claims 1
- 230000004323 axial length Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 description 14
- 239000007921 spray Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 6
- 238000005242 forging Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
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
- 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
- F02F3/0076—Pistons the inside of the pistons being provided with ribs or fins
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/04—Forging of engine parts
Definitions
- the invention relates to a piston for internal combustion engines according to the Genus of the main claim.
- Such a piston is described for example in DE 41 09 160 C2.
- a high degree of elasticity reach and avoid stress concentration, this is asymmetrical in executed with respect to the pin axis.
- the pulled down part of the Shaft wall extends over a larger circumferential angle than that pulled down part of the shaft wall of the counter pressure side.
- Between the The wall of the shaft and the indented bolt eyes are arched Crossbars on the pressure side of the piston relative to the counter pressure side are offset outside.
- the entire piston structure is mirror-symmetrical to one Plane perpendicular to the pin axis.
- the invention has for its object a piston for internal combustion engines to be designed so that this is a floor surface that is easily accessible for cooling has high strength and sufficient rigidity and with conventional methods is simple and inexpensive to manufacture.
- This Pistons are designed for high to very high compression and very high engine outputs be suitable at correspondingly high combustion chamber or piston temperatures.
- the rigidity and strength of the piston are advantageously increased, if the webs not offset to the outside are in a central area of the Bolt eyes are connected to these. This results geometrically favorable conditions on the bolt eye, the one for strength Enable required connection in a simple way and on the other hand almost enable balanced leverage on the bolt eye.
- a piston 1 is shown, which is known per se Bolt 2 is connected to the connecting rod 3 of an internal combustion engine.
- the connecting rod 3 is connected to a crankshaft 4 which is mounted in bearing seats 5.
- Spray oil hole 6 shown in dashed lines, which with the oil supply the internal combustion engine is connected. About this spray oil hole 6 is in Operation of the internal combustion engine oil for cooling the piston 1 to the inside the piston crown 7 injected.
- the piston 1 has a circumferential, in Piston shaft 8 closed in the circumferential direction with three circumferential grooves 9 for receiving piston pistons or Oil scraper rings.
- Four webs 10, 11 extend from the piston skirt, of which two opposite each other and with a bolt eye 12, 13 are connected.
- the two bolt eyes 12 and 13 are aligned Provided holes 14 for receiving the bolt 2.
- the bolt eye 13 shown on the right in the sectional view in FIG. 2 is located itself in the assembled state of the internal combustion engine Side of the connecting rod 3 as that associated with the corresponding piston, with the Spray oil bore 6 provide bearing bridge 5.
- the spray oil bore 6 is at a distance arranged to the longitudinal axis of the crankshaft, i.e. it is off-center.
- this spray oil bore 6 between pin eye 13 and piston skirt 8 is perpendicular to the longitudinal axis of the Bolts or the bores 14 offset to the outside.
- the three other bridges have at least approximately the same distance from this plane E.
- the Offset of the web 11 is in the sectional view based on its location Bearing bridge 5 clearly.
- the piston shaft 8 is open for better piston guidance in the cylinder bore two opposite sides each between the pin eyes 12, 13 extended.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
- Fig. 1
- einen Schnitt durch einen erfindungsgemäßen Kolbens mit Pleuel und Teilen der Kurbelwelle sowie deren Lagerung,
- Fig. 2
- einen Schnitt durch den Kolben entlang der Linie II-II nach Fig. 1.
Claims (5)
- Kolben für Brennkraftmaschinen mit im wesentlichen kreisrunden Zylinderbüchsen, mit einem Kolbenboden (7) und einem mindestens über einen Teil seiner axialen Länge in Umfangsrichtung geschlossenen Kolbenschaft (8), mit gegenüber dem Durchmesser des Kolbenschaftes zurückversetzten Bolzenaugen (12, 13), mit einander gegenüberliegenden Stegen (10, 11) zwischen den Bolzenaugen und der Schaftwand (8), dadurch gekennzeichnet, daß der Kolben geschmiedet ist, daß der Kolben im Betrieb der Brennkraftmaschine spritzölgekühlt ist, daß einer der Stege (11) zwischen Bolzenauge (13) und der Schaftwand (8) relativ zu dem gegenüberliegenden, am gleichen Bolzenauge angreifenden Steg (10) nach außen versetzt ist, und daß die beiden Stege (10) des anderen Bolzenauges (12) den gleichen Abstand von einer Mittelebene (E) senkrecht zur Bolzenachse haben.
- Kolben nach Anspruch 1, dadurch gekennzeichnet, daß die nicht nach außen versetzten Stege (10) in einem mittleren Bereich des Bolzenauges (12, 13) mit diesem verbunden sind.
- Kolben nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Stege (10, 11) zumindest annähernd geradlinig verlaufen.
- Kolben nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Stege (10, 11) etwa rechtwinklig vom Bolzenauge (12, 13) abgehen.
- Kolben nach einem oder mehreren der vorherigen Ansprüche, dadurch gekennzeichnet, daß zwischen den Bolzenaugen vom geschlossenen Kolbenschaft ausgehende Schaftabschnitte verlaufen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4434994A DE4434994C2 (de) | 1994-09-30 | 1994-09-30 | Kolben für Brennkraftmaschinen |
DE4434994 | 1994-09-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0705968A1 EP0705968A1 (de) | 1996-04-10 |
EP0705968B1 true EP0705968B1 (de) | 1998-04-08 |
Family
ID=6529626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95111387A Expired - Lifetime EP0705968B1 (de) | 1994-09-30 | 1995-07-20 | Kolben für Brennkraftmaschinen |
Country Status (4)
Country | Link |
---|---|
US (1) | US5562074A (de) |
EP (1) | EP0705968B1 (de) |
JP (1) | JPH08177620A (de) |
DE (2) | DE4434994C2 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19538407A1 (de) * | 1995-10-16 | 1997-04-17 | Mahle Gmbh | Gegossener Leichmetallkolben für einen 2-Takt-Motor |
DE19740065A1 (de) * | 1997-09-12 | 1999-03-18 | Ks Kolbenschmidt Gmbh | Leichtmetallkolben für Brennkraftmaschinen |
DE19747746C1 (de) * | 1997-10-29 | 1998-11-19 | Alcan Gmbh | Gekühlter Kolben für Verbrennungskraftmaschinen und Verbrennungskraftmaschinen mit derartigen Kolben |
DE19810883A1 (de) * | 1998-03-13 | 1999-09-16 | Ks Kolbenschmidt Gmbh | Leichtmetallkolben für Brennkraftmaschinen |
JP2000008948A (ja) * | 1998-04-21 | 2000-01-11 | Nissan Motor Co Ltd | 内燃機関のピストン |
DE60139329D1 (de) * | 2000-10-18 | 2009-09-03 | Federal Mogul Corp | Mehraxial geschmiedeter kolben |
DE10325917A1 (de) | 2003-06-07 | 2005-03-31 | Mahle Gmbh | Kolben für einen Verbrennungsmotor und Gießverfahren zu dessen Herstellung |
DE102005043747A1 (de) | 2005-09-14 | 2007-03-22 | GM Global Technology Operations, Inc., Detroit | Kolben für eine Brennkraftmaschine |
AU2009303560A1 (en) * | 2008-10-13 | 2010-04-22 | Delaware Capital Formation, Inc. | Piston with improved side loading resistance |
DE102009045437A1 (de) * | 2009-10-07 | 2011-04-14 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor und Verbrennungsmotor mit einem Kolben |
DE102011080822A1 (de) * | 2011-08-11 | 2013-02-14 | Mahle International Gmbh | Kolben |
DE102015217911A1 (de) * | 2015-09-18 | 2017-03-23 | Mahle International Gmbh | Kolben für eine Brennkraftmaschine |
MX2018002879A (es) * | 2015-10-13 | 2018-06-18 | Ks Kolbenschmidt Gmbh | Falda de piston centralmente soportada. |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1960313A (en) * | 1929-12-30 | 1934-05-29 | Elmer C Long | Piston for an internal combustion motor |
DE711937C (de) * | 1938-11-10 | 1941-10-09 | Elektron Co M B H | Geschmiedeter Kolben fuer Brennkraftmaschinen, insbesondere Flugmotorkolben |
DE2808914C2 (de) * | 1978-03-02 | 1983-10-27 | Mahle Gmbh, 7000 Stuttgart | Leichtmetallhubkolben für Verbrennungsmotoren |
IT1118774B (it) * | 1979-06-12 | 1986-03-03 | Ass Eng Italia | Perfezionamento relativo aglistantuffi nei motori diesel |
US4377967A (en) * | 1981-03-27 | 1983-03-29 | Mack Trucks, Inc. | Two-piece piston assembly |
DE3210771A1 (de) * | 1982-03-24 | 1983-09-29 | Günter 8543 Hilpoltstein Elsbett | Kolbentrieb fuer hubkolben-brennkraftmaschinen, wie dieselmotoren u.a. |
DE3425965A1 (de) * | 1984-07-14 | 1986-01-16 | Kolbenschmidt AG, 7107 Neckarsulm | Leichtmetallkolben fuer brennkraftmaschinen |
IT1228961B (it) * | 1989-03-03 | 1991-07-11 | Gilardoni Vittorio Spa | Pistone alleggerito. |
US5076225A (en) * | 1989-12-28 | 1991-12-31 | Toyota Jidosha Kabushiki Kaisha | Piston for an internal combustion engine |
DE4109160C3 (de) * | 1991-03-20 | 2000-11-30 | Federal Mogul Nuernberg Gmbh | Kolben für Brennkraftmaschinen |
JPH0618642U (ja) * | 1992-08-11 | 1994-03-11 | 株式会社ユニシアジェックス | ピストン |
JPH06147004A (ja) * | 1992-11-13 | 1994-05-27 | Aisin Seiki Co Ltd | 内燃機関用ピストン |
US5408916A (en) * | 1993-09-07 | 1995-04-25 | Ford Motor Company | Piston having a liner and method for manufacturing same |
-
1994
- 1994-09-30 DE DE4434994A patent/DE4434994C2/de not_active Expired - Fee Related
-
1995
- 1995-07-20 DE DE59501832T patent/DE59501832D1/de not_active Expired - Fee Related
- 1995-07-20 EP EP95111387A patent/EP0705968B1/de not_active Expired - Lifetime
- 1995-09-28 JP JP7251300A patent/JPH08177620A/ja not_active Withdrawn
- 1995-09-29 US US08/536,184 patent/US5562074A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE4434994C2 (de) | 1998-02-19 |
DE59501832D1 (de) | 1998-05-14 |
EP0705968A1 (de) | 1996-04-10 |
US5562074A (en) | 1996-10-08 |
JPH08177620A (ja) | 1996-07-12 |
DE4434994A1 (de) | 1996-04-11 |
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