EP1546534A1 - Mehrteiligen gekühlten kolben für einen verbrennungsmotor - Google Patents
Mehrteiligen gekühlten kolben für einen verbrennungsmotorInfo
- Publication number
- EP1546534A1 EP1546534A1 EP03769201A EP03769201A EP1546534A1 EP 1546534 A1 EP1546534 A1 EP 1546534A1 EP 03769201 A EP03769201 A EP 03769201A EP 03769201 A EP03769201 A EP 03769201A EP 1546534 A1 EP1546534 A1 EP 1546534A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- bores
- cooling channel
- rib
- annular
- 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 15
- 238000001816 cooling Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 5
- 238000005304 joining Methods 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 2
- 239000003779 heat-resistant material Substances 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- 238000004881 precipitation hardening Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal 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
- F02F3/0084—Pistons the pistons being constructed from specific materials
-
- 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
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
-
- 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
- F02F2003/0061—Multi-part pistons the parts being connected by casting, brazing, welding or clamping by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
Definitions
- the invention relates to a multi-part cooled piston for an internal combustion engine, with a piston forged part made of steel, which comprises a combustion bowl in the piston crown and an annular wall with a ring section, and a piston lower part, which has a piston skirt, hubs for receiving the piston pin connecting the piston to the connecting rod, and includes hub supports connected to the piston skirt.
- a multi-part cooled piston for an internal combustion engine is known from JP 61175255 A.
- This piston shows a number of ribs at the level of the ring portion of the piston, between which a heat-insulating plate is arranged to minimize the heat transfer from the combustion chamber trough to the ring portion.
- WO 00/77379 A1 Another piston for an internal combustion engine is known from WO 00/77379 A1, which has a wall part with a plurality of radially arranged transverse walls made of thin sheet metal to improve the heat dissipation in the cooling channel.
- the invention is therefore based on the object of specifying a piston concept for a multi-part cooled piston with which cost-effective production is ensured and with which piston deformation due to the action of high gas pressures and temperatures can be effectively counteracted.
- a cooling channel formed in the upper piston part has bores directed towards the piston head over its circumference, the piston material present between the bores Forms support ribs that form sections of a circumferential ring rib radially towards the longitudinal axis of the piston.
- a lower piston part has an annular circumferential supporting rib connected to the hub supports with a joining surface.
- the upper part of the piston and the lower part of the piston are inseparably connected to one another by means of a welding or soldering process with the joining surfaces of the ring and support rib, the cooling duct being closable by a cooling duct cover.
- the cooling channel can be shaped closer to the piston crown or combustion bowl and still has excellent dimensional stability.
- the arrangement of the support ribs results in a type of chamber formation in the cooling channel, i.e. Generation of shaker rooms, which extends the length of time the cooling oil stays and thus improves the heat dissipation of the piston areas to be cooled.
- Fig. 1 shows a piston according to the invention in cross section, cut in the pin direction
- FIG. 2 shows a piston according to the invention in a bottom view, cut along line II according to FIG. 1;
- FIG. 3 shows a piston according to the invention in cross section, cut transversely to the piston pin direction in a first and second embodiment
- FIG. 4 shows a piston according to the invention, cut along the line IV-IV from FIG. 1;
- Fig. 5 shows a piston according to the invention in perspective view.
- FIG. 6 shows a piston according to the invention, cut along the line IV-IV from FIG. 1, in a further exemplary embodiment.
- the multi-part cooled piston 20 consists of a forged upper piston part 1 with a combustion bowl 3, ring wall 4 with ring section 11 and a cooling channel 7 and a piston lower part 2, which comprises a piston skirt 9 and hub supports 6, as can be seen in FIG. 5.
- 7 holes 14 are provided in the cooling channel, which are arranged symmetrically distributed on the circumference and are introduced in the direction of the piston crown, ie parallel to the longitudinal axis K of the piston.
- the depth hs of the bores 14 is a maximum of half the total height H of the cooling channel 7, so that an unobstructed cooling oil circuit remains guaranteed. This construction creates shaker spaces for the cooling oil, which increase the cooling effect.
- cooling duct cover 13 which consists of a two-part spring element provided with an oil inlet and an oil outlet (not shown), the cooling duct 7 is closed at its end open to the piston skirt 9.
- the material regions designated as support ribs 8 between the bores 14 merge radially to the longitudinal axis K of the piston into sections of an annular rib 5, which in its entirety forms the annular rib 5.
- the bores 14 and thus the support ribs 8 are, as shown in FIG. 4, distributed radially symmetrically over the circumference of the cooling channel 7.
- the number of bores and thus the distribution of the support ribs 8 can be designed such that a larger number of support ribs 8 is arranged in the pressure-counterpressure direction D or GD than transversely thereto, that is to say an asymmetrical circumferential distribution takes place in the cooling channel 7.
- the distribution of the bores 14 and thus the support ribs 8 in the cooling channel 7, if this is characterized according to the quadrants I-IV formed by the main piston axes K H , can be such that a symmetrical (FIG. 4) or asymmetrical (FIG. not shown) or partially symmetrical (Fig. 6) distribution is provided or the distribution is dependent on the local temperature distribution in the piston crown. In this way, the occurring temperature and stress loads on the piston can be countered better.
- the bores 14 can be aligned by round bores, as shown in FIGS. 4 and 6, or elongated bores (not shown), which have their long side in the direction from the center of the piston radially outward to the piston wall.
- the tips of the bores 14 can be round or, as shown in FIG. 1, angled.
- the axes of the bores 14 can be parallel to the longitudinal piston axis K and / or, i.e. in combination, be arranged at an acute angle, the bores 14 preferably pointing in the direction of the combustion bowl 3.
- annular circumferential supporting rib 10 is formed, as can be seen in FIG. 3, which corresponds in its geometric dimensions to the annular rib 5.
- the upper piston part 1 and lower piston part 2 are non-detachably connected to one another via the supporting and ring ribs 10 and 5 by means of a welding or soldering process.
- the upper piston part 1 is advantageously made of an oxidation-resistant and / or heat-resistant material and the lower piston part 2 is made of a precipitation-hardening ferritic-pearlitic steel or tempered steel.
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)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10244511 | 2002-09-25 | ||
| DE10244511A DE10244511A1 (de) | 2002-09-25 | 2002-09-25 | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
| PCT/DE2003/003115 WO2004029440A1 (de) | 2002-09-25 | 2003-09-19 | Mehrteiligen gekühlten kolben für einen verbrennungsmotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1546534A1 true EP1546534A1 (de) | 2005-06-29 |
| EP1546534B1 EP1546534B1 (de) | 2014-11-19 |
Family
ID=31984026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03769201.9A Expired - Lifetime EP1546534B1 (de) | 2002-09-25 | 2003-09-19 | Mehrteiligen gekühlten kolben für einen verbrennungsmotor |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6789460B2 (de) |
| EP (1) | EP1546534B1 (de) |
| JP (1) | JP2006500506A (de) |
| KR (1) | KR20050057575A (de) |
| CN (1) | CN100390395C (de) |
| BR (1) | BR0314788B1 (de) |
| DE (1) | DE10244511A1 (de) |
| WO (1) | WO2004029440A1 (de) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100535423C (zh) * | 2003-03-31 | 2009-09-02 | 日立金属株式会社 | 内燃机用活塞及其制造方法 |
| DE102004019011A1 (de) * | 2004-04-20 | 2005-11-17 | Mahle Gmbh | Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors |
| EP1899632A1 (de) * | 2004-06-08 | 2008-03-19 | Savice Limited | Kolben, ring und kolbenanordnung für einen zweitaktmotor |
| US7406941B2 (en) | 2004-07-21 | 2008-08-05 | Federal - Mogul World Wide, Inc. | One piece cast steel monobloc piston |
| DE102004057624A1 (de) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor |
| DE102004057625A1 (de) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
| DE102005037175A1 (de) * | 2005-08-06 | 2007-02-08 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor sowie Abdeckring für den Kühlkanal eines solchen Kolbens |
| US20080271597A1 (en) * | 2006-03-31 | 2008-11-06 | Soul David F | Methods and apparatus for operating an internal combustion engine |
| US9970384B2 (en) * | 2009-11-06 | 2018-05-15 | Federal-Mogul Llc | Steel piston with cooling gallery and method of construction thereof |
| US8807109B2 (en) | 2009-11-06 | 2014-08-19 | Federal-Mogul Corporation | Steel piston with cooling gallery and method of construction thereof |
| KR101686873B1 (ko) * | 2009-11-10 | 2016-12-15 | 페더럴-모걸 코오포레이숀 | 블로바이 특징을 갖는 피스톤 및 내연기관의 돌발적 고장을 방지하는 방법 |
| DE102010015568A1 (de) * | 2010-04-19 | 2011-10-20 | Ks Kolbenschmidt Gmbh | Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen |
| US9856820B2 (en) * | 2010-10-05 | 2018-01-02 | Mahle International Gmbh | Piston assembly |
| DE102010056220A1 (de) * | 2010-12-24 | 2012-06-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
| DE102010056218A1 (de) * | 2010-12-24 | 2012-06-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
| DE102011013113A1 (de) * | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
| KR20140032455A (ko) * | 2011-06-29 | 2014-03-14 | 페더럴-모걸 코오포레이숀 | 언더크라운 지지 부재를 가진 피스톤 |
| CN105143732A (zh) * | 2013-01-29 | 2015-12-09 | 马勒国际有限公司 | 具有第四环导槽和改良摩擦特性的钢制活塞 |
| JP2014185522A (ja) * | 2013-03-21 | 2014-10-02 | Hitachi Automotive Systems Ltd | 内燃機関のピストン |
| US12129811B2 (en) * | 2013-04-05 | 2024-10-29 | Tenneco Inc. | Piston made using additive manufacturing techniques |
| KR101449304B1 (ko) * | 2013-06-27 | 2014-10-08 | 현대자동차주식회사 | 자동차 엔진용 피스톤의 제조 방법 |
| DE102015002322A1 (de) * | 2015-02-26 | 2016-09-01 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
| JP6401104B2 (ja) * | 2015-04-22 | 2018-10-03 | 株式会社クボタ | エンジンのピストン |
| US10711732B2 (en) * | 2017-01-19 | 2020-07-14 | Industrial Parts Depot, Llc | Reduced height piston |
| US11519359B1 (en) | 2022-04-04 | 2022-12-06 | Caterpillar Inc. | Low compression natural gas engine piston bowl for improved combustion stability |
| GB2700144A (en) * | 2023-12-21 | 2025-10-22 | Cummins Power Generation Inc | Piston head and piston head assembly |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3240193A (en) * | 1964-07-30 | 1966-03-15 | Gen Motors Corp | Piston and piston cooling means |
| JPS6329104B2 (de) * | 1979-04-23 | 1988-06-10 | Kyatapiraa Inc | |
| DE2919638A1 (de) * | 1979-05-16 | 1980-11-20 | Schmidt Gmbh Karl | Kolben fuer brennkraftmaschinen |
| DE3008330A1 (de) * | 1980-03-05 | 1981-09-17 | Karl Schmidt Gmbh, 7107 Neckarsulm | Fluessigkeitsgekuehlter kolben fuer brennkraftmaschinen |
| FR2483521A1 (fr) * | 1980-05-30 | 1981-12-04 | Semt | Piston de machine a pistons alternatifs, notamment de moteur a combustion interne |
| JPS61175255A (ja) | 1985-01-30 | 1986-08-06 | Mitsubishi Heavy Ind Ltd | 内燃機関用断熱ピストン |
| DE3518721C3 (de) * | 1985-05-24 | 1997-09-04 | Man B & W Diesel Ag | Ölgekühlter, mehrteiliger Tauchkolben einer Brennkraftmaschine |
| DE3707462A1 (de) * | 1987-03-07 | 1988-09-15 | Man B & W Diesel Gmbh | Oelgekuehlter, mehrteiliger tauchkolben fuer brennkraftmaschinen |
| DE3830033C2 (de) * | 1987-11-30 | 1998-05-07 | Mahle Gmbh | Gebauter, ölgekühlter Tauchkolben für Verbrennungsmotoren |
| DE4014703A1 (de) * | 1990-05-08 | 1991-11-14 | Mahle Gmbh | Gekuehlter tauchkolben fuer verbrennungsmotoren mit voneinander getrenntem kolbenoberteil und kolbenschaft |
| DE4118400A1 (de) * | 1990-06-29 | 1992-01-02 | Kolbenschmidt Ag | Gebauter, oelgekuehlter kolben fuer dieselmotoren |
| US5136992A (en) * | 1990-07-12 | 1992-08-11 | Mahle Gmbh | Piston for internal combustion engines with forged sections made of steel |
| BR9005371A (pt) * | 1990-10-18 | 1992-06-16 | Metal Leve Sa | Processo de fabricacao de embolo com galeria de refrigeracao |
| BR9005370A (pt) * | 1990-10-18 | 1992-06-16 | Metal Leve Sa | Processo de fabricacao de embolo refrigerado |
| DE4039754A1 (de) * | 1990-12-13 | 1992-06-17 | Mahle Gmbh | Mehrteiliger, gekuehlter kolben fuer verbrennungsmotoren |
| DE4041637C1 (de) * | 1990-12-22 | 1992-04-09 | Mtu Friedrichshafen Gmbh | |
| DE4208037C2 (de) * | 1992-03-13 | 1998-03-26 | Mahle Gmbh | Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren |
| DE4430137B4 (de) * | 1994-08-25 | 2004-07-22 | Mahle Gmbh | Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren |
| DE19720958B4 (de) * | 1997-05-17 | 2007-07-26 | Mahle Gmbh | Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren |
| DE19747944A1 (de) * | 1997-10-30 | 1999-05-06 | Mahle Gmbh | Kolben mit zentralem Kühlraum |
| GB9814400D0 (en) * | 1998-07-02 | 1998-09-02 | Nokia Telecommunications Oy | Amplifier circuitry |
| US6032619A (en) * | 1998-07-16 | 2000-03-07 | Federal-Mogul World Wide, Inc. | Piston having a tube to deliver oil for cooling a crown |
| US6279455B1 (en) * | 1998-10-06 | 2001-08-28 | Caterpillar Inc. | Method and apparatus for making a two piece unitary piston |
| DE19910582A1 (de) * | 1999-03-10 | 2000-09-28 | Mahle Gmbh | Gebauter Kolben |
| DE19926568A1 (de) * | 1999-06-11 | 2000-12-14 | Mahle Gmbh | Gekühlter Kolben für Verbrennungsmotoren |
-
2002
- 2002-09-25 DE DE10244511A patent/DE10244511A1/de not_active Withdrawn
- 2002-10-11 US US10/270,254 patent/US6789460B2/en not_active Expired - Lifetime
-
2003
- 2003-09-19 EP EP03769201.9A patent/EP1546534B1/de not_active Expired - Lifetime
- 2003-09-19 KR KR1020057005109A patent/KR20050057575A/ko not_active Ceased
- 2003-09-19 CN CNB038228424A patent/CN100390395C/zh not_active Expired - Fee Related
- 2003-09-19 BR BRPI0314788-6A patent/BR0314788B1/pt not_active IP Right Cessation
- 2003-09-19 JP JP2004538729A patent/JP2006500506A/ja active Pending
- 2003-09-19 WO PCT/DE2003/003115 patent/WO2004029440A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004029440A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20050057575A (ko) | 2005-06-16 |
| HK1078915A1 (zh) | 2006-03-24 |
| DE10244511A1 (de) | 2004-04-15 |
| US6789460B2 (en) | 2004-09-14 |
| JP2006500506A (ja) | 2006-01-05 |
| EP1546534B1 (de) | 2014-11-19 |
| BR0314788A (pt) | 2005-07-26 |
| CN1685141A (zh) | 2005-10-19 |
| WO2004029440A1 (de) | 2004-04-08 |
| US20040055460A1 (en) | 2004-03-25 |
| CN100390395C (zh) | 2008-05-28 |
| BR0314788B1 (pt) | 2012-09-04 |
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