EP2603686B1 - Kolben für einen verbrennungsmotor - Google Patents
Kolben für einen verbrennungsmotor Download PDFInfo
- Publication number
- EP2603686B1 EP2603686B1 EP11787584.9A EP11787584A EP2603686B1 EP 2603686 B1 EP2603686 B1 EP 2603686B1 EP 11787584 A EP11787584 A EP 11787584A EP 2603686 B1 EP2603686 B1 EP 2603686B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- collar
- face surface
- radially
- ring rib
- 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.)
- Not-in-force
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 8
- 238000001816 cooling Methods 0.000 claims description 61
- 238000003466 welding Methods 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 5
- 230000004323 axial length Effects 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 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
-
- 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
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
Definitions
- the invention relates to pistons for an internal combustion engine with an upper part, whose upper side forms the piston crown, with a radially outwardly formed on the piston head, pointing downwards in kolbenêtabgewandte direction, circumferential collar, on the radial outer side of a Verdichtungsringnut is arranged, with one on the underside the upper part arranged radially inside the collar, circumferential annular rib, wherein the axial length of the collar is smaller than the distance of the lower end face of the annular rib from the piston head, with a lower part, which has radially outwardly an upwardly facing, circumferential wall, in the radial outer side Ring grooves are formed, and whose upper end face has the same radial distance from the piston axis as the lower end face of the collar, with an integrally formed on the lower part, upwardly facing, circumferential and radially disposed within the wall pad, the upper end face of the piston axis the has the same distance as the lower end face
- a piston of the type mentioned is from the PCT application WO 02/33291 known.
- This piston has a near the bottom of the cooling chamber and the cooling channel arranged oil passage which connects the cooling chamber with the cooling channel, and in particular in the cooling chamber prevents the formation of ⁇ iesammiung and thus deteriorates the cooling of the thermally highly loaded piston crown, because the oil in the refrigerator can flow back into the cooling channel via the oil passage, and only then oil flows from the cooling passage into the cooling space when the oil level of the oil in the cooling passage is higher than the level of the oil in the cooling space. This also obstructs the flow of oil from the cooling channel through the cooling chamber to the oil drain opening, which reduces the flow of cool oil and thus leads to a further deterioration of the cooling of the piston crown.
- a similar piston is out WO2010 / 075959 known.
- Object of the present invention is to avoid this disadvantage of the prior art, and to improve the cooling of the thermally high-stress piston crown.
- This object is achieved in that evenly distributed over the circumference, radially disposed bores are introduced into the annular rib, which connect the cooling channel with the cooling space, which are spaced from the lower end face of the annular rib insofar as between the holes and the end face of the annular rib there is sufficient space for a weld bead formed during friction welding and axially spaced from a plane defined by the lower end surface of the collar, the web having an upwardly tapered shape, and at least one oil inlet opening disposed between the cooling passage and the piston inner space ,
- the spaced-apart from the bottom of the cooling chamber position of the bores between the cooling channel and the cooling space and the upwardly tapered shape of the web, which forms the lower boundary of the refrigerator, in the radially outer region of the refrigerator allows the formation of an accumulation of oil in the fast Float movements of the piston in engine operation to a good cooling of the thermally highly loaded piston crown leads by the oil of the oil accumulation in At regular intervals on the underside of the piston crown is thrown. (Shaker effect) Furthermore, when the level of the oil in the cooling channel reaches the holes between the cooling channel and the cooling chamber, oil is passed from the cooling channel through the holes in the cooling chamber, which improves the oil flow and thus the cooling of the highly thermally stressed piston crown.
- the opening of the web is closed by an upwardly curved disc with a centrally located opening which is connected via a latching connection with the web, whereby the assembly of the piston is facilitated.
- Fig. 1 and 2 show a consisting of an upper part 1 and a lower part 2 piston 3 for an internal combustion engine in section, wherein the sectional images each consist of two halves.
- the left halves of the sectional images lie on the pin bore axis 4, whereas the right halves of the sectional images are perpendicular to the pin bore axis 4.
- the upper part 1 made of steel has on its upper side a piston bottom 5 with a combustion bowl 6.
- a circumferential, downwardly facing collar 7 is formed, which defines a circumferential recess 8 radially outward, in the finished piston 3 according to Fig. 2 forms the upper part of a radially outwardly and in piston crown near circumferential cooling channel 9.
- the collar 7 On its radial outer side, the collar 7 provides space for a top land 10 and a compression ring groove 11.
- the upper part 1 on its side facing away from the piston bottom 5 a circumferential annular rib 12, which forms the radially inner boundary of the upper part of the cooling channel 9 and the radially outer boundary of the upper part 13 of a centrally located cooling chamber 14.
- radially bores 15 are introduced, which in the assembled piston 3 according to Fig. 2 connect the cooling channel 9 with the cooling space 14.
- the piston 3 has four holes 15. These holes 15 may have the inwardly and outwardly flared shape of a mold bore.
- the holes 15 can be easily introduced from the outside radially into the annular rib 12 before assembly of the piston 3, the axial length "a" of the collar 7 is smaller by a degree than the distance "b" of the lower end face 16 of the annular rib 12 of Piston bottom 5, which is composed of the diameter "d” of the holes 15, a distance "s” of the holes 15 from the lower end face 16 of the annular rib 12 and an axial distance “c” of the holes 15 from the lower end face 17 of the collar 7 , In this case, the distance "c" should ensure that the drill has sufficient space when introducing the holes 15 relative to the collar 7.
- the distance "s" of the bores 15 from the lower end surface 16 of the annular rib 12 corresponds to the axial dimension of the welding bead 18, which forms when the upper part 1 and the lower part 2 are joined together by friction welding.
- the also made of steel lower part 2 of the piston 3 consists of a bottom member 19, on the piston bottom facing upper side radially outwardly a circumferential wall 20 is arranged, in the radially outer annular grooves 21, 22 are formed.
- the upper end face 23 of the wall 20 has the same distance from the piston axis 24 as the lower end face 17 of the collar 7, so that the end faces 7 and 23 form friction welding surfaces during welding of the upper part 1 to the lower part 2.
- the wall 20 is adjoined by a peripheral support 25 which is at the same distance from the piston axis 24 as the annular rib 12 and whose upper end surface 26 has an axial distance from the plane formed by the end face 23 of the wall 20 corresponds to the dimension (c + d + s), to which the distance "a" of the end face 17 of the collar 7 from the piston head 5 is less than the distance "b" of the end face 16 of the annular rib 12 from the piston head 5. It follows that when welding the upper part 1 with the lower part 2, not only the end faces 17 and 23 but also the end faces 16 and 26 Reibsch do lake form.
- a circumferential recess 27 is formed in the bottom member 19, which in the assembled piston 3 according to Fig. 2 the lower part of the cooling channel 9 forms.
- the bottom member 9 Radially within the support 25, the bottom member 9 is formed as a circumferential, upwardly tapered web 28 having a centrally located, circular opening 29, wherein the region 38 formed between the web 28 and the support 25 as a circumferential and upwardly open channel is.
- the cooling space 14 is bounded at the top by the piston head 5, radially outwardly by the annular rib 12 and by the support 25 and at the bottom by the web 28.
- the edge 32 of the opening 29 of the web 28 in the form of a radially inwardly open "V", which makes it possible, a cup-shaped, upwardly curved disc 30 having a central opening 31, with an outer dimension corresponding to the inner dimension of the opening 29, and with a radial outer edge which is complementary to the edge 32 of the opening 29 is formed to be secured by means of a latching connection in the opening 29.
- the edge of the disc 30 identifies the required compliance, radial slots 33 are incorporated into the edge, where between the edge of the disc 30 is formed in the form of elastically resilient metal tabs. This makes it possible to press the disc 30 from below into the opening 29 of the web 28 after the completion of the piston 3 and to fix it via the resulting latching connection.
- the cooling passage 9 is connected to the piston interior 35. Furthermore, 19 are two on the underside of the bottom element opposite shaft elements 36, 36 'are arranged, which are connected to each other via two mutually opposite pin bosses 37, 37', each with a pin bore 39, 39 '.
- cooling oil is introduced into the cooling channel 9 via the oil inlet opening 34, which due to the rapid reciprocating movements of the piston 3 to the underside of the radially outer region of the piston crown 5 and the part of the formed by the wall 20 and the collar 7 Piston 3 is thrown and here it has a cooling effect.
- (Shaker effect) A portion of the oil passes through the holes 15 in the cooling chamber 14, wherein in the radially outer portion 38 of the cooling chamber 14 an accumulation of oil forms, which remains because of the spaced from the bottom member 19 position of the bore 15 in the cooling space 14, to the Bottom of the piston head 5 is thrown in the region of the thermally highly loaded combustion bowl 6 and here cooling acts. A portion of this oil then passes through the opening 31 of the disc 30 in the piston interior 35th
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)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010033882A DE102010033882A1 (de) | 2010-08-10 | 2010-08-10 | Kolben für einen Verbrennungsmotor |
PCT/DE2011/001565 WO2012019594A1 (de) | 2010-08-10 | 2011-08-09 | Kolben für einen verbrennungsmotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2603686A1 EP2603686A1 (de) | 2013-06-19 |
EP2603686B1 true EP2603686B1 (de) | 2018-10-17 |
Family
ID=45023457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11787584.9A Not-in-force EP2603686B1 (de) | 2010-08-10 | 2011-08-09 | Kolben für einen verbrennungsmotor |
Country Status (8)
Country | Link |
---|---|
US (1) | US8550052B2 (zh) |
EP (1) | EP2603686B1 (zh) |
JP (1) | JP2013535617A (zh) |
KR (1) | KR20140012936A (zh) |
CN (1) | CN103119278B (zh) |
BR (1) | BR112013003256B1 (zh) |
DE (1) | DE102010033882A1 (zh) |
WO (1) | WO2012019594A1 (zh) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8631573B2 (en) * | 2010-08-10 | 2014-01-21 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
DE102010053925A1 (de) | 2010-12-09 | 2012-06-14 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102011111319A1 (de) * | 2011-08-26 | 2013-02-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102012008945A1 (de) * | 2012-05-05 | 2013-11-07 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
WO2014059221A1 (en) * | 2012-10-12 | 2014-04-17 | Mahle International Gmbh | Piston with cooling gallery and cooling gallery fins |
DE102013002232B4 (de) * | 2013-02-11 | 2022-11-17 | Man Energy Solutions Se | Kolben einer Brennkraftmaschine |
DE102013004797A1 (de) | 2013-03-20 | 2014-09-25 | Neumayer Tekfor Holding Gmbh | Kolben für Verbrennungsmotor |
DE102013009155A1 (de) * | 2013-05-31 | 2014-12-04 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
CN103437898A (zh) * | 2013-09-22 | 2013-12-11 | 中国北方发动机研究所(天津) | 一种带环形槽的柴油机活塞 |
CN106062362A (zh) * | 2013-12-26 | 2016-10-26 | 阿塞里克股份有限公司 | 用于在往复式压缩机中使用的活塞头及其生产方法 |
US20150337959A1 (en) * | 2014-05-23 | 2015-11-26 | Federal-Mogul Corporation | Piston with keystone second ring groove for high temperature internal combustion engines |
CN104343575A (zh) * | 2014-08-29 | 2015-02-11 | 大连滨城活塞制造有限公司 | 一种新型燃气机活塞顶 |
US11067033B2 (en) * | 2017-05-17 | 2021-07-20 | Tenneco Inc. | Dual gallery steel piston |
DE102017210282A1 (de) * | 2017-06-20 | 2018-12-20 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor mit Flüssigmetallkühlung |
CN110486181A (zh) * | 2017-08-29 | 2019-11-22 | 熵零技术逻辑工程院集团股份有限公司 | 一种内燃机活塞 |
DE102019122877B4 (de) * | 2019-08-27 | 2021-08-19 | Man Energy Solutions Se | Kolben einer Brennkraftmaschine |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2140824C2 (de) * | 1971-08-14 | 1983-06-01 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Ölgekühlter Kolben für Brennkraftmaschinen |
DE2919638A1 (de) * | 1979-05-16 | 1980-11-20 | Schmidt Gmbh Karl | Kolben fuer brennkraftmaschinen |
US4517930A (en) * | 1982-09-28 | 1985-05-21 | Kawasaki Jukogyo Kabushiki Kaisha | Piston of combustion engine |
BR9005376A (pt) * | 1990-10-18 | 1992-06-16 | Metal Leve Sa | Embolo bipartido com fechamento postico de galeria e processo para sua obtencao |
US5906182A (en) * | 1997-03-25 | 1999-05-25 | General Motors Corporation | Engine piston |
US6279455B1 (en) * | 1998-10-06 | 2001-08-28 | Caterpillar Inc. | Method and apparatus for making a two piece unitary piston |
US20010025568A1 (en) * | 2000-03-28 | 2001-10-04 | Mahle Gmbh | One-piece piston |
WO2002033291A1 (en) | 2000-10-18 | 2002-04-25 | Federal-Mogul Corporation | Multi-axially forged piston |
US6557514B1 (en) * | 2001-10-23 | 2003-05-06 | Federal-Mogul World Wide, Inc. | Closed gallery monobloc piston having oil drainage groove |
US20070074695A1 (en) * | 2005-10-04 | 2007-04-05 | Mahle Technology, Inc. | Piston having improved cooling characteristics |
CN1944994A (zh) * | 2005-10-08 | 2007-04-11 | 山东滨州渤海活塞股份有限公司 | 焊接式锻钢整体活塞及其制造方法 |
DE102006002949A1 (de) * | 2006-01-21 | 2007-08-02 | Ks Kolbenschmidt Gmbh | Kühlkanalkolben für eine Brennkraftmaschine |
DE102006031094A1 (de) * | 2006-07-05 | 2008-01-10 | Ks Kolbenschmidt Gmbh | Kühlmediumübertritt im Kolben mit kleiner Kompressionshöhe |
DE102007018932A1 (de) * | 2007-04-21 | 2008-10-23 | Ks Kolbenschmidt Gmbh | Belastungsoptimierter Innenraum eines Kolbens |
DE102007027162A1 (de) * | 2007-06-13 | 2008-12-18 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
DE102008011922A1 (de) * | 2008-02-29 | 2009-09-03 | Ks Kolbenschmidt Gmbh | Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens |
DE102008055909A1 (de) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor |
US20100108001A1 (en) * | 2008-11-05 | 2010-05-06 | Rainer Scharp | Multi-part piston for an internal combustion engine and method for its production |
DE102008055911A1 (de) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung |
US8371261B2 (en) * | 2008-11-05 | 2013-02-12 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
DE102008055908A1 (de) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor |
WO2010075959A1 (de) * | 2008-12-15 | 2010-07-08 | Ks Kolbenschmidt Gmbh | Einteileger kolben aus stahl mit optimiertem mehrkomponentenkühlsystem |
CN102510963B (zh) * | 2009-08-06 | 2015-07-08 | 费德罗-莫格尔公司 | 低导热系数活塞及其构造方法 |
US8327537B2 (en) * | 2009-12-23 | 2012-12-11 | Federal Mogul Corporation | Reinforced dual gallery piston and method of construction |
DE102010025508A1 (de) * | 2010-06-29 | 2011-12-29 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
-
2010
- 2010-08-10 DE DE102010033882A patent/DE102010033882A1/de not_active Withdrawn
-
2011
- 2011-08-09 US US13/205,988 patent/US8550052B2/en active Active
- 2011-08-09 CN CN201180046161.9A patent/CN103119278B/zh active Active
- 2011-08-09 WO PCT/DE2011/001565 patent/WO2012019594A1/de active Application Filing
- 2011-08-09 EP EP11787584.9A patent/EP2603686B1/de not_active Not-in-force
- 2011-08-09 KR KR1020137005782A patent/KR20140012936A/ko not_active Application Discontinuation
- 2011-08-09 BR BR112013003256-1A patent/BR112013003256B1/pt active IP Right Grant
- 2011-08-09 JP JP2013523487A patent/JP2013535617A/ja active Pending
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
---|---|
CN103119278B (zh) | 2016-08-10 |
CN103119278A (zh) | 2013-05-22 |
KR20140012936A (ko) | 2014-02-04 |
BR112013003256B1 (pt) | 2021-02-23 |
JP2013535617A (ja) | 2013-09-12 |
EP2603686A1 (de) | 2013-06-19 |
WO2012019594A1 (de) | 2012-02-16 |
US20120037114A1 (en) | 2012-02-16 |
BR112013003256A2 (pt) | 2016-06-14 |
US8550052B2 (en) | 2013-10-08 |
DE102010033882A1 (de) | 2012-02-16 |
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