EP1642017A1 - Kolben für einen verbrennungsmotor - Google Patents
Kolben für einen verbrennungsmotorInfo
- Publication number
- EP1642017A1 EP1642017A1 EP04738618A EP04738618A EP1642017A1 EP 1642017 A1 EP1642017 A1 EP 1642017A1 EP 04738618 A EP04738618 A EP 04738618A EP 04738618 A EP04738618 A EP 04738618A EP 1642017 A1 EP1642017 A1 EP 1642017A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- ring element
- projection
- base body
- combustion engine
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000007789 sealing Methods 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
- 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
-
- 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
- F02F2003/0007—Monolithic pistons; One piece constructions; Casting of pistons
Definitions
- the invention relates to a piston for an internal combustion engine according to the preamble of claim 1.
- a piston for an internal combustion engine which consists of a piston base body with pin bosses and with a box-shaped shaft.
- a ring-shaped component is welded to the bottom area of the piston base body, in the outside of which part of the ring section is incorporated, and the upper part of which is designed as a top land.
- the component forms, together with the part of the piston base body on the piston crown side, an annular cooling channel, which is closed by a peripheral wall formed on the piston base body on the hub side.
- the annular component is welded to the piston base body via each of its two end faces, which makes the production of the piston known from the prior art very time-consuming and labor-intensive.
- the invention is based on the problem of simplifying, accelerating and thus making the manufacturing process of a piston equipped with a cooling duct less expensive.
- a useful embodiment of the invention is the subject of the dependent claim. This results in a quick and easy to produce screw connection between a piston body and a ring element, which is given great strength by the mechanical tension under which an elastically designed projection places the ring element.
- 1 is a sectional view of a piston for an internal combustion engine consisting of two halves, which represent two longitudinal sections of the piston offset by 90 °,
- Fig. 2 shows a cross section of the piston along the line A-A in Fig. 1 and Fig. 3 shows an embodiment of the lower end face of an annular element screwed to the piston body.
- Fig. 1 shows a piston 1 for an internal combustion engine in a sectional view, which consists of two halves, of which the left half is a section of the piston 1 along a longitudinal axis 2 of a hub bore 3 and the right half is a longitudinal section of the piston offset by 90 ° thereto 1.
- the piston 1 consists of a piston base body 4, to which a ring element 6 is screwed via a piston 5-side thread 5 and which carries a top land 7 and a ring section 8 of the piston 1.
- the piston body 4 and the ring element 6 are made of steel.
- the piston base body 4 is formed in one piece and has a combustion bowl 10 in the region of the piston head 9.
- Two pin hubs 12, 12 ', each with a hub bore 3, 3', are formed on the piston head 9 via a hub support 11, 11 ', the end faces 16 of which are set back in relation to the ring element 6 in the direction of the longitudinal axis 17 of the piston.
- the pin bosses 12, 12 ' are connected to one another via shaft elements 13, 13'.
- the piston base body 4 has recesses 18 which, in the present exemplary embodiment, are arranged all around in the region of the shaft elements 13, 13' of the piston base body 4.
- a piston base body 4 can also be used as the carrier of the ring element 6, in which the end faces 16 of the pin bosses 12, 12 'are not set back in relation to the ring section 8.
- the recess 18 is partially between the entire circumference of the piston Shaft elements 13, 13 'and the ring element 6 and partially arranged circumferentially between the pin bosses 12, 12' and the ring element 6.
- the piston base body 4 forms, together with the ring element 6, an annular cooling channel 14, which is partly incorporated into the piston base body 4 and partly into the ring element 6.
- the cooling channel 14 is covered by a projection 15 of the piston base body 4, which is designed in the manner of a plate spring and, starting from the piston base body 4, is inclined in the direction of the piston head 9.
- An outlet opening 20 of the cooling duct 14 can also be seen in FIG. 1.
- FIG. 2 shows a section across the piston 1 along the line A-A in FIG. 1, in which the side of the piston head 9 facing the pin bosses 12, 12 'can be seen in a bottom view.
- 2 shows an inlet opening 19 and the outlet opening 20 of the cooling channel 14, which is not recognizable in the selected form of representation, for cooling liquid provided for cooling the piston 1.
- the shaft elements 13, 13 'and the bolt hubs 12, 12' connected to them are hatched. 2 also shows the projection 15, which is visible from below in the area of the recessed end faces 16 of the pin bosses 12, 12 ', and the lower end face 21 of the ring element 6.
- the thread 5 can first be provided with a ceramic sealant before the ring element 6 is screwed onto the prefabricated piston base body 4 via the thread 5.
- the lower end face 21 of the ring element 6 comes into contact with the surface 25 of the projection 15, which in the present exemplary embodiment is flat, that is to say is plateau-like, but which can also be roof-shaped or plate-shaped or can have a spherical shape.
- the projection 15 is so thin-walled that it yields elastically when the ring element 6 is screwed on, when it exerts pressure on the projection 15. After unscrewing the ring element 6, the projection 15 puts the ring element 6 under mechanical tension, which improves the activity of the screw connection between the ring element 6 and the bottom region of the piston body 4 contributes.
- the lower end face 21 of the ring element 6 is provided with a recess 24 which has a radially aligned surface 22 on its inside and then an axially aligned surface 23 on its outside.
- the axially lying surface 23 is screwed into the lower end face 21 of the ring element 6 in the radial direction to such an extent that, as shown in FIG.
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 |
---|---|---|---|
DE10325914A DE10325914B4 (de) | 2003-06-07 | 2003-06-07 | Kolben für einen Verbrennungsmotor |
PCT/DE2004/001164 WO2004111420A1 (de) | 2003-06-07 | 2004-06-07 | Kolben für einen verbrennungsmotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1642017A1 true EP1642017A1 (de) | 2006-04-05 |
EP1642017B1 EP1642017B1 (de) | 2011-05-11 |
Family
ID=33482690
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04738618A Expired - Lifetime EP1642017B1 (de) | 2003-06-07 | 2004-06-07 | Kolben für einen verbrennungsmotor |
Country Status (9)
Country | Link |
---|---|
US (1) | US6938537B2 (de) |
EP (1) | EP1642017B1 (de) |
JP (1) | JP4365409B2 (de) |
KR (1) | KR101142238B1 (de) |
CN (1) | CN100412345C (de) |
BR (1) | BRPI0411090B1 (de) |
DE (1) | DE10325914B4 (de) |
HK (1) | HK1088941A1 (de) |
WO (1) | WO2004111420A1 (de) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10340292A1 (de) * | 2003-09-02 | 2005-04-14 | Mahle Gmbh | Kolben für einen Verbrennungsmotor |
DE102005044597A1 (de) * | 2005-09-17 | 2007-03-29 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
US20070295299A1 (en) * | 2006-06-12 | 2007-12-27 | Mahle Technology, Inc. | Piston for a combustion engine |
US20070283917A1 (en) * | 2006-06-12 | 2007-12-13 | Lapp Michael T | Piston for a combustion engine |
DE102007027162A1 (de) * | 2007-06-13 | 2008-12-18 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
DE102007036236A1 (de) * | 2007-08-02 | 2009-02-05 | Mahle International Gmbh | Gebauter Kolben |
DE102008038325A1 (de) | 2007-12-20 | 2009-06-25 | Mahle International Gmbh | Verfahren zum Befestigen eines Ringelementes auf einem Kolben für einen Verbrennungsmotor |
DE102008045456A1 (de) * | 2008-09-02 | 2010-03-04 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
CN102667127B (zh) * | 2009-11-25 | 2014-05-28 | 丰田自动车株式会社 | 内燃机用活塞以及内燃机 |
US8776670B2 (en) * | 2010-02-17 | 2014-07-15 | Mahle International Gmbh | Piston assembly |
EP2900992A1 (de) * | 2012-09-27 | 2015-08-05 | KS Kolbenschmidt GMBH | Zweiteilig aufgebauter kolben einer brennkraftmaschine |
DE102014000253A1 (de) * | 2014-01-08 | 2015-07-09 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
MX2018013353A (es) | 2016-05-04 | 2019-02-20 | Ks Kolbenschmidt Gmbh | Piston. |
CN115492694A (zh) * | 2022-09-14 | 2022-12-20 | 重庆潍柴发动机有限公司 | 振荡冷却活塞 |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE278074C (de) * | ||||
GB186060A (en) * | 1921-09-17 | 1923-02-22 | Christian Bergh Backer | Improvements in or relating to pistons |
US1723823A (en) * | 1926-03-15 | 1929-08-06 | Perfect Circle Co | Piston |
DE589409C (de) * | 1930-11-02 | 1933-12-14 | Elektronmetall G M B H | Kolben fuer Brennkraftmaschinen |
US2244008A (en) * | 1939-06-16 | 1941-06-03 | Gen Motors Corp | Piston construction |
US2772933A (en) | 1955-06-22 | 1956-12-04 | Alco Products Inc | Pistons |
DE1049174B (de) * | 1956-10-25 | 1959-01-22 | Mahle Kg | OElgekuehlter Kolben, insbesondere fuer Brennkraftmaschinen |
US3190273A (en) * | 1964-01-03 | 1965-06-22 | Continental Aviat & Eng Corp | Piston for internal combustion engine |
DE1245640B (de) * | 1964-11-25 | 1967-07-27 | Mahle Kg | Kolben fuer Brennkraftmaschinen |
DK112141B (da) * | 1966-07-12 | 1968-11-11 | Burmeister & Wains Mot Mask | Stempel, navnlig til forbrændingsmotorer. |
DE2140824C2 (de) * | 1971-08-14 | 1983-06-01 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Ölgekühlter Kolben für Brennkraftmaschinen |
DE2348870A1 (de) * | 1973-09-28 | 1975-04-10 | Maschf Augsburg Nuernberg Ag | Mehrteiliger kolben fuer brennkraftmaschinen, insbesondere grossdieselmotoren |
DD123962A1 (de) * | 1975-12-24 | 1977-01-26 | ||
GB1588515A (en) * | 1976-09-02 | 1981-04-23 | Ass Eng Ltd | Pistons |
DE2914456A1 (de) * | 1979-04-10 | 1980-10-23 | Schmidt Gmbh Karl | Gebauter kolben fuer brennkraftmaschinen |
US4286505A (en) * | 1979-04-23 | 1981-09-01 | Caterpillar Tractor Co. | Oil cooled piston |
DE3338419A1 (de) * | 1983-10-22 | 1985-05-02 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Kolben fuer eine hubkolbenbrennkraftmaschine |
IT1240526B (it) * | 1990-07-31 | 1993-12-17 | Borgo Nova S.P.A. | Perfezionamento relativo a pistoni, in genere. |
DE4208037C2 (de) * | 1992-03-13 | 1998-03-26 | Mahle Gmbh | Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren |
US6003479A (en) * | 1997-05-12 | 1999-12-21 | Evans; Mark M. | Piston construction |
DE19846152A1 (de) * | 1998-10-07 | 2000-04-13 | Mahle Gmbh | Kolben mit Kolbengrundkörper aus geschmiedetem Stahl und einem Kühlkanal |
US6327962B1 (en) * | 1999-08-16 | 2001-12-11 | Caterpillar Inc. | One piece piston with supporting piston skirt |
US6286414B1 (en) * | 1999-08-16 | 2001-09-11 | Caterpillar Inc. | Compact one piece cooled piston and method |
DE10047258C2 (de) * | 2000-09-23 | 2003-02-06 | Ks Kolbenschmidt Gmbh | Kolben mit sich am Basisteil abstützenden und angeschweißtem Ringabschnitt |
JP3714170B2 (ja) * | 2001-02-05 | 2005-11-09 | 日本電気株式会社 | オンラインショッピング決済方法及びそのシステム並びにオンラインショッピング決済プログラム |
-
2003
- 2003-06-07 DE DE10325914A patent/DE10325914B4/de not_active Expired - Fee Related
- 2003-12-30 US US10/749,176 patent/US6938537B2/en not_active Expired - Fee Related
-
2004
- 2004-06-07 BR BRPI0411090-0A patent/BRPI0411090B1/pt not_active IP Right Cessation
- 2004-06-07 KR KR1020057024014A patent/KR101142238B1/ko not_active IP Right Cessation
- 2004-06-07 WO PCT/DE2004/001164 patent/WO2004111420A1/de active Application Filing
- 2004-06-07 EP EP04738618A patent/EP1642017B1/de not_active Expired - Lifetime
- 2004-06-07 JP JP2006515670A patent/JP4365409B2/ja not_active Expired - Fee Related
- 2004-06-07 CN CNB2004800158221A patent/CN100412345C/zh not_active Expired - Fee Related
-
2006
- 2006-08-23 HK HK06109370A patent/HK1088941A1/xx not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2004111420A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE10325914B4 (de) | 2012-08-02 |
CN1802498A (zh) | 2006-07-12 |
KR101142238B1 (ko) | 2012-05-07 |
US6938537B2 (en) | 2005-09-06 |
BRPI0411090B1 (pt) | 2015-05-12 |
JP2006527326A (ja) | 2006-11-30 |
BRPI0411090A (pt) | 2006-07-25 |
US20040244581A1 (en) | 2004-12-09 |
HK1088941A1 (en) | 2006-11-17 |
EP1642017B1 (de) | 2011-05-11 |
WO2004111420A1 (de) | 2004-12-23 |
CN100412345C (zh) | 2008-08-20 |
JP4365409B2 (ja) | 2009-11-18 |
KR20060014443A (ko) | 2006-02-15 |
DE10325914A1 (de) | 2004-12-23 |
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