EP1922478A1 - Gebauter, flüssigkeitsgekühlter kolben - Google Patents
Gebauter, flüssigkeitsgekühlter kolbenInfo
- Publication number
- EP1922478A1 EP1922478A1 EP06775919A EP06775919A EP1922478A1 EP 1922478 A1 EP1922478 A1 EP 1922478A1 EP 06775919 A EP06775919 A EP 06775919A EP 06775919 A EP06775919 A EP 06775919A EP 1922478 A1 EP1922478 A1 EP 1922478A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- radially
- support
- cooling channel
- cooling duct
- 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.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 33
- 238000003801 milling Methods 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
- F02F3/0015—Multi-part pistons
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together
-
- 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
-
- 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
Definitions
- the invention relates to a built, liquid-cooled piston according to the preamble of claim.
- liquid-cooled piston which consists of a piston head forming the upper part and a piston skirt having the lower part.
- the upper part and the lower part are connected to each other by an expansion screw, wherein between the head of the expansion screw and one of the support of the expansion screw serving collar of the lower part a sleeve is arranged, which has radial holes, can flow through the accumulated in an inner cooling oil cooling oil.
- the expansion screw has a relatively large footprint, which prevents a reduction in the compression height and thus a reduction in the axial dimensions of the piston.
- the unimpeded outflow of cooling oil from the inner cooling space requires an additional sleeve with radial bores, which makes the assembly of the piston known from the prior art rather complicated.
- Show it 1 shows a section through a built, liquid-cooled piston along a lying in pressure-back pressure direction of the piston plane with a side view of the hex nut according to the invention
- Fig. 2 shows a section through the piston along a lying in the direction of the longitudinal axis of the pin bore plane with a section through the hex nut according to the invention.
- FIGS. 1 and 2 show a two-part, constructed, liquid-cooled piston 1, which consists of an upper part 2 and a lower part 3.
- the upper part 2 and the lower part 3 may be made of aluminum, steel or cast iron with nodular graphite (GGG cast iron according to DIN 1693).
- GGG cast iron nodular graphite
- pin bosses 8, 8 'each having a pin bore 9, 9' are arranged at the bottom of the lower part 3 facing away from the piston head 4.
- the radially outer end surfaces 29, 29 'of the pin bosses 8, 8' relative to the annular wall 5 are offset radially inward.
- the pin bosses 8, 8 ' are connected to each other via shaft elements 10, 10'.
- the upper part 2 and the lower part 3 of the piston 1 are connected via a radially inner, annular support 1 1 and via a concentrically arranged, radially outer, annular support 12 with each other.
- the radially outer support 12 is formed by the piston bottom side end face of a radially outwardly extending support web 14, the piston crown side partly to the shaft elements 10, 10 '(FIG. 1) and partly to the pin bosses 8, 8' (FIG. 2) is formed.
- the support 12 has the shape of a radially inwardly and axially directed in the direction of the piston head 4 stage 30.
- the upper part 2 and the lower part 3 can thereby be coaxially aligned with each other, that the inside of the lower end face of the annular wall 5 has a cylindrical recess 31 whose inner shape is complementary to the shape of the step 30 of the outer support 12, so Assembly of the piston 1, the stage 30 is inserted into the recess 31, whereby the coaxial alignment of the upper and lower part of the piston 1 is achieved.
- the inner support 11 is formed by the annular, piston-bottom-side end face of a radially encircling within the support web 14 and like the support web 14 partly to the shaft elements 10, 10 '(FIG. 1) and partly to the pin bosses 8, 8' (FIG. 2). molded bottom joint 15 formed.
- the upper part 2 of the piston 1 is located on a side facing away from the piston bottom Anformung 32, wherein the piston bottom facing away from end of Anformung 32 rests on the inner support 11 and at least approximately the same radial diameter as the inner support 11.
- an outer cooling channel 13 is arranged in the piston bottom side edge region of the piston 1 is formed, the radially outer boundary partly of the annular wall 5 and partly of the support web 14, the radially inner boundary of the sub-base 15, the axially upper boundary of the piston head 4 and the axially lower boundary of the lower part 3 of the piston 1 are formed. Cooling oil is introduced into the outer cooling channel 13 via at least one oil feed channel 16 opening into the piston interior 28.
- the piston 1 has a further, coaxially to the piston axis 17 arranged, annular, inner cooling channel 18, which has a smaller radial diameter than the outer cooling channel 13, and which, viewed in the radial direction, is disposed within the outer cooling channel 13.
- the outer cooling channel 13 is connected to the inner cooling channel 18.
- the outer cooling channel 13 and the inner cooling channel 18 can also be connected to one another via bores introduced into the lower part foot 15.
- the lateral surface of the bolt 20 has an end region facing away from the piston bottom with an external thread 23 (FIG. 2), which corresponds to the internal thread 34 of the hexagonal nut 19, so that the hexagonal nut 19 can be screwed onto the external thread 23 of the bolt 20.
- the hexagonal nut 19 consists of a threaded portion 24 with the internal thread 34 and a radially outer cross-section hexagonal outer surface and a piston crown side integrally formed thereon collar 25, in the present embodiment, two radially arranged and opposing holes, or milling 26, 27, the connect the inner cooling channel 18 with the piston interior 28. If the hexagonal nut 19 is screwed tight, the piston-bottom-side end face of the collar 25 rests against the end face of the molding 33 facing away from the piston crown.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102005042003A DE102005042003A1 (de) | 2005-09-05 | 2005-09-05 | Gebauter, flüssigkeitsgekühlter Kolben |
| PCT/DE2006/001548 WO2007028364A1 (de) | 2005-09-05 | 2006-09-02 | Gebauter, flüssigkeitsgekühlter kolben |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1922478A1 true EP1922478A1 (de) | 2008-05-21 |
| EP1922478B1 EP1922478B1 (de) | 2013-03-27 |
Family
ID=37460180
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP06775919A Active EP1922478B1 (de) | 2005-09-05 | 2006-09-02 | Gebauter, flüssigkeitsgekühlter kolben |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7934482B2 (de) |
| EP (1) | EP1922478B1 (de) |
| JP (1) | JP4838848B2 (de) |
| KR (1) | KR101279843B1 (de) |
| CN (1) | CN100572784C (de) |
| DE (1) | DE102005042003A1 (de) |
| WO (1) | WO2007028364A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007060472A1 (de) * | 2007-12-14 | 2009-06-18 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
| DE102008055848A1 (de) * | 2008-11-04 | 2010-05-06 | Ks Kolbenschmidt Gmbh | Kühlkanalkolben einer Brennkraftmaschine mit einem Verschlusselement, das den Kühlkanal verschließt |
| US8161934B2 (en) * | 2008-11-05 | 2012-04-24 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
| US8371261B2 (en) * | 2008-11-05 | 2013-02-12 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
| DE102008055909A1 (de) | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor |
| DE102008056203A1 (de) * | 2008-11-06 | 2010-05-12 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
| US20120227705A1 (en) | 2010-03-02 | 2012-09-13 | Toyota Jidosha Kabushiki Kaisha | Combustion pressure control system |
| US9291119B2 (en) * | 2013-03-14 | 2016-03-22 | Mahle International Gmbh | Piston assembly with preloaded support surfaces |
| US10449621B2 (en) * | 2014-05-01 | 2019-10-22 | Mahle International Gmbh | Magnetic arc welded piston assembly |
| DE102016001926A1 (de) * | 2016-02-18 | 2017-08-24 | Man Truck & Bus Ag | Kolben für eine Hubkolben-Verbrennungskraftmaschine |
| DE102021128787A1 (de) | 2021-11-05 | 2023-05-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Kolben für einen Verbrennungsmotor |
| DE102021128790A1 (de) | 2021-11-05 | 2023-05-11 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Kolbenanordnung für einen Verbrennungsmotor |
| CN114645798B (zh) * | 2022-03-14 | 2023-02-28 | 北京理工大学 | 一种活塞销孔衬套结构 |
| USD1108688S1 (en) * | 2024-09-16 | 2026-01-06 | Yidan SUN | Dual linear light |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1037133A (fr) | 1951-05-16 | 1953-09-15 | Perfectionnements aux pistons de moteurs | |
| FR1429327A (fr) | 1964-12-29 | 1966-02-25 | Hispano Suiza Sa | Perfectionnements apportés aux pistons pour moteurs à combustion interne |
| US3465651A (en) | 1968-02-13 | 1969-09-09 | Alco Products Inc | Composite pistons |
| DE2914456A1 (de) * | 1979-04-10 | 1980-10-23 | Schmidt Gmbh Karl | Gebauter kolben fuer brennkraftmaschinen |
| DE2936630C2 (de) * | 1979-09-11 | 1985-05-09 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Kolben für eine Brennkraftmaschine |
| DE3719469A1 (de) * | 1987-06-11 | 1988-12-29 | Mahle Gmbh | Gebauter fluessigkeitsgekuehlter kolben fuer verbrennungsmotoren |
| IT1240526B (it) * | 1990-07-31 | 1993-12-17 | Borgo Nova S.P.A. | Perfezionamento relativo a pistoni, in genere. |
| DE4131275C2 (de) * | 1991-09-20 | 1998-04-09 | Mahle Gmbh | Gebauter flüssigkeitsgekühlter Kolben |
| CA2086133A1 (en) * | 1992-12-23 | 1994-06-24 | Rex Edgell | Piston for an alco series 251 diesel engine |
| KR19990031997U (ko) * | 1997-12-31 | 1999-07-26 | 정몽규 | 피스톤 냉각 구조 |
| DE19846496A1 (de) * | 1998-10-09 | 2000-04-13 | Mahle Gmbh | Kolben für einen Verbrennungsmotor |
| DE10022035A1 (de) * | 2000-05-05 | 2001-11-08 | Mahle Gmbh | Verbrennungsmotor mit einem gebauten Kolben |
| DE10210570A1 (de) * | 2002-03-09 | 2003-09-18 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
| CN2601323Y (zh) * | 2002-04-05 | 2004-01-28 | 曾庆生 | 支撑磨擦式防松解锁螺栓 |
| DE10257022A1 (de) * | 2002-12-06 | 2004-06-17 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
| CN2653140Y (zh) * | 2003-06-27 | 2004-11-03 | 绵阳新晨动力机械有限公司 | 汽油机油底壳 |
| CN2667182Y (zh) * | 2003-10-09 | 2004-12-29 | 中国北车集团大连机车研究所 | 280/285系列天然气发动机用钢顶铝裙活塞 |
| DE102004057624A1 (de) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor |
| DE102005041409A1 (de) * | 2005-09-01 | 2007-03-08 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
-
2005
- 2005-09-05 DE DE102005042003A patent/DE102005042003A1/de not_active Withdrawn
-
2006
- 2006-09-02 KR KR1020087006566A patent/KR101279843B1/ko not_active Expired - Fee Related
- 2006-09-02 JP JP2008529461A patent/JP4838848B2/ja not_active Expired - Fee Related
- 2006-09-02 US US11/991,522 patent/US7934482B2/en active Active
- 2006-09-02 EP EP06775919A patent/EP1922478B1/de active Active
- 2006-09-02 CN CNB2006800323162A patent/CN100572784C/zh not_active Expired - Fee Related
- 2006-09-02 WO PCT/DE2006/001548 patent/WO2007028364A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2007028364A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2007028364A1 (de) | 2007-03-15 |
| EP1922478B1 (de) | 2013-03-27 |
| JP2009507171A (ja) | 2009-02-19 |
| KR101279843B1 (ko) | 2013-06-28 |
| CN101258319A (zh) | 2008-09-03 |
| JP4838848B2 (ja) | 2011-12-14 |
| US20090139481A1 (en) | 2009-06-04 |
| US7934482B2 (en) | 2011-05-03 |
| DE102005042003A1 (de) | 2007-03-08 |
| CN100572784C (zh) | 2009-12-23 |
| KR20080043360A (ko) | 2008-05-16 |
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