EP2900992A1 - Zweiteilig aufgebauter kolben einer brennkraftmaschine - Google Patents
Zweiteilig aufgebauter kolben einer brennkraftmaschineInfo
- Publication number
- EP2900992A1 EP2900992A1 EP13763077.8A EP13763077A EP2900992A1 EP 2900992 A1 EP2900992 A1 EP 2900992A1 EP 13763077 A EP13763077 A EP 13763077A EP 2900992 A1 EP2900992 A1 EP 2900992A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- base body
- ring element
- ring
- separation
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 title abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000005304 joining Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000000926 separation method Methods 0.000 claims description 43
- 238000000034 method Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000005242 forging Methods 0.000 claims description 2
- 238000007781 pre-processing Methods 0.000 claims description 2
- 238000004080 punching Methods 0.000 claims description 2
- 239000011265 semifinished product Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 15
- 239000011324 bead Substances 0.000 description 4
- 239000002826 coolant Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005476 soldering 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
- F02F3/16—Pistons having cooling means
- F02F3/18—Pistons having cooling means the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
-
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P3/00—Liquid cooling
- F01P3/06—Arrangements for cooling 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
- F02F2003/0053—Multi-part pistons the parts being connected by casting, brazing, welding or clamping by soldering
-
- 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
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49249—Piston making
- Y10T29/49252—Multi-element piston making
Definitions
- the invention relates to a piston of an internal combustion engine, designed as a two-part cooling channel piston, which comprises a base body and a ring element, according to the features of the preamble of claim 1. Furthermore, the present invention relates to a method for producing such a piston according to claim 9.
- the piston for internal combustion engines is exposed to high thermal and gas and mass forces caused by high mechanical cycling, which require an appropriate design and shape. Heavily loaded zones of the piston, such as the combustion bowl in the piston crown and the ring field, require effective cooling.
- a cooling channel in the piston A coolant, preferably the lubricating oil of the internal combustion engine, circulates through the cooling channel designed as a hollow space. The effectiveness of the piston cooling is determined in particular by the exchanged volume of the coolant in the cooling channel.
- a two-part cooling channel piston comprising a main body and a ring member.
- the annular, the top land and the ring field of the piston enclosing, separate ring member which limits the outside of the cooling channel is fastened by means of a screw thread on the base body.
- a position fixation of the ring element is carried out in the installed state by means of dowel pins or grub screws, which are inserted between the ring member and the main body.
- the US 6,155,157 shows a cooling channel piston with two separately manufacturable components, which are then joined together by a friction welding material.
- the present invention has for its object to provide a two-part cooling channel piston, which includes a permanent connection of the individual components.
- the ring element and the base body together form two mutually offset circumferential separation planes, for which purpose two corresponding joining webs of the ring element and of the main body cooperate, which are materially connected to one another.
- the ring element is supported by two height-offset, positioned in different positions joining webs of the associated joint webs of the body.
- This design principle allows a piston assembly with which a permanent connection of the individual piston components can be realized.
- the concept offers the advantage of optimizing the cooling channel by means of a corresponding design of the ring element so as to improve the piston cooling and to realize a piston which can be loaded to a higher thermal load.
- the construction or the design of the separate ring element, in particular with respect to wall thicknesses of individual piston sections can be influenced, so as to reduce the piston weight, for example. Furthermore, it is possible to optimize the top land, the ring field or the ring carrier of the ring element. According to the invention, this structure offers the possibility of the separation planes between the base body and the ring element so to arrange, so that sets in terms of component strength and / or welding an optimal position.
- the invention offers the possibility to specially form the thermally and mechanically highly stressed ring element.
- the annular element enclosing the land and the ring field for the piston rings can thus be optimized in terms of fatigue strength and wear resistance.
- no defined position of the separation planes is provided for the piston.
- the cooperating, circumferential joining zones can advantageously be designed so that they are both offset from each other and also aligned differently.
- a piston may include matching or differently configured separation planes. Thereafter, the invention provides the ability to provide between the ring member and the body two height-offset separation planes, one of which can extend vertically and the other horizontally.
- the invention includes a piston in which at least one of the two separation planes is oriented obliquely or inclined.
- these can be rectified or run in opposite directions. It is advantageous for the respective separation level no determination of the course direction.
- a centering effect of these components can continue to be utilized when joining the ring element and the base body.
- a vertically oriented separation plane is preferably provided in the piston crown between the ring element and the base body, and a horizontally aligned separation plane below the ring zone of the ring element. In this piston construction, a maximum height offset between the two separation levels sets.
- the base body forms on the outside a circumferential step whose concentric to a longitudinal axis of the piston extending joint is enclosed by the joint of the ring member to form a vertical separation plane.
- the length of the separation plane can be influenced by the axial length of the step or the paragraph, this concept also causes a centering of the components in a mating.
- a preferred embodiment of the invention further provides that the corresponding, cooperating joining webs of the ring element and the base body have constant wall thicknesses. Bonding webs with at least approximately equal-sized wall thicknesses cause a desired optimal stress compensation or a stress distribution in the piston upper part.
- the invention offers the possibility of producing the ring element and the base body from a matching material or from different materials. This advantage is offered by a multi-part piston, wherein the choice of material can be made with regard to the respective thermal and / or mechanical stress.
- the ring element is preferably made of a wear-resistant, in particular heat-resistant material.
- As a material for The base body can be selected to reduce weight, a less wear-resistant material, such as a light metal alloy.
- a method for producing a piston includes the following method steps.
- the manufacturing process of the main body and the ring element includes the design of the joints without reworking. In this case, the main body and the ring element can be made of a matching material or of different materials. With the subsequent pre-processing, the combustion bowl and a pin bore in the body and piston ring grooves can be introduced into the ring field of the ring member.
- a friction welding or a multi-orbital or multilinear friction welding is used.
- an electron beam welding, a resistance press welding method, a capacitor discharge welding or a laser welding is suitable.
- Furthermore can be used for cohesive bonding of the corresponding joining webs a soldering. After the welding process has been completed, the welding beads emerging to the outside are removed. The last step is followed by a finishing and cleaning of the piston.
- FIG. 1 shows a sectional view of a first embodiment of a piston (1) according to the invention
- FIG. 2 shows a second embodiment of a piston according to the invention
- FIG. 3 shows a third embodiment of a piston according to the invention
- FIG. 4 shows a fourth embodiment of a piston (1) according to the invention -
- FIG. 1 shows, in a sectional view, a piston 1 integral with its manufacture, comprising a base body 2 and a ring element 3, the joining webs 6a, 6b forming separation planes 4a, 5a; 7a, 7b are connected.
- a Reibsch past a Reibsch
- a multi-orbital friction welding method is used in which, due to the smallest circular orbital movements, no or only small welding beads 8, 9 form in the region of the separation planes 4a, 5a which require little or no reworking.
- the wall thickness Si, S 2 of the joining webs 6a, 6b and the joining webs 7a, 7b is largely constant. Between the vertically oriented separation plane 5a and the horizontally extending separation plane 4a, a maximum height offset H is established.
- the main body 2 of the piston 1 includes a combustion chamber trough 12 introduced eccentrically or rotationally symmetrically with respect to a longitudinal axis 1 1 in a piston head 10.
- a piston skirt 13 of the base body 2 includes two diametrically opposed bolt holes 14 intended to receive a piston pin (not shown).
- a combustion chamber trough 12 enclosing intermediate wall 16 defines on the inside a cooling channel 15, which is surrounded on the outside by the ring element 3.
- the cooling channel 15 is closed circumferentially after the welding of the base body 2 with the ring member 3.
- a cooling medium can act on the cooling channel 15 in a targeted manner via at least one inlet and one outlet (not shown).
- the ring element 3 has piston crown side on a top land 17, to which a ring field 18 with annular grooves 19 connects, which are intended for receiving piston rings (not shown).
- FIG. 2 to 4 show alternative embodiments of the piston 1 according to the invention, wherein for identical or equivalent components matching reference numerals are used. The following description of the figures is essentially limited to distinguishing features from FIG. 1.
- the piston 1 comprises two vertically oriented separation planes 4b, 5a between the base body 2 and the Ring element 3.
- the separation plane 4b is formed by a step 20 of the base body 2, which is surrounded on the outside by an end portion of the ring element 3.
- An overlapping region of the joining webs 7a, 7b of the cooperating components, the base body 2 and the ring element 3 defines the separation plane 4b.
- FIG. 3 the piston 1 is shown, the construction of which largely coincides with the representation in FIG.
- the piston 1 in Figure 3 shows next to the separation plane 4b according to Figure 2, the horizontally extending, the intermediate wall 16 associated separation plane 5b, which are formed by the joining webs 21 a, 21 b.
- the step 20 of the main body 2 can be used for centering the ring element 3.
- the piston 1 in FIG. 4 comprises two inclined or oblique separation planes 4c, 5c between the base body 2 and the ring element 3.
- the Separation levels 4c, 5c are opposite to each other.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012217599 | 2012-09-27 | ||
PCT/EP2013/069368 WO2014048810A1 (de) | 2012-09-27 | 2013-09-18 | Zweiteilig aufgebauter kolben einer brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2900992A1 true EP2900992A1 (de) | 2015-08-05 |
Family
ID=49209376
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13763077.8A Withdrawn EP2900992A1 (de) | 2012-09-27 | 2013-09-18 | Zweiteilig aufgebauter kolben einer brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (2) | US20150226151A1 (de) |
EP (1) | EP2900992A1 (de) |
CN (1) | CN104662277B (de) |
BR (1) | BR112015005723A2 (de) |
DE (1) | DE102013218709A1 (de) |
MX (1) | MX2015003487A (de) |
WO (1) | WO2014048810A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3251358B1 (de) * | 2015-01-29 | 2019-11-13 | Canon Kabushiki Kaisha | Palettenprädiktorinitialisierer bei der codierung oder decodierung eigenständiger codierungsstrukturen |
MX2018013353A (es) * | 2016-05-04 | 2019-02-20 | Ks Kolbenschmidt Gmbh | Piston. |
DE102017202462A1 (de) | 2017-02-15 | 2018-08-16 | Mahle International Gmbh | Verfahren zum Herstellen eines Kolbens |
DE102017211480A1 (de) * | 2017-07-05 | 2019-01-10 | Mahle International Gmbh | Verfahren zur Herstellung eines Kolbens |
US10865734B2 (en) | 2017-12-06 | 2020-12-15 | Ai Alpine Us Bidco Inc | Piston assembly with offset tight land profile |
DE102021203241A1 (de) | 2021-03-30 | 2022-10-06 | Mahle International Gmbh | Kolben für eine Brennkraftmaschine und Verfahren zur Herstellung des Kolbens |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007270813A (ja) * | 2006-03-31 | 2007-10-18 | Yamaha Motor Co Ltd | 内燃機関用ピストン |
US20120037111A1 (en) * | 2010-08-10 | 2012-02-16 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
US20120222632A1 (en) * | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2013083342A1 (de) * | 2011-12-09 | 2013-06-13 | Ks Kolbenschmidt Gmbh | Kolben für brennkraftmaschinen |
WO2013167105A1 (de) * | 2012-05-05 | 2013-11-14 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor |
Family Cites Families (34)
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DE1245640B (de) * | 1964-11-25 | 1967-07-27 | Mahle Kg | Kolben fuer Brennkraftmaschinen |
CH450062A (de) * | 1964-11-26 | 1968-01-15 | Mahle Kg | Brennkraftmaschinenkolben |
DE2307347A1 (de) * | 1973-02-15 | 1974-08-22 | Maschf Augsburg Nuernberg Ag | Mehrteiliger tauchkolben fuer viertaktbrennkraftmaschinen, insbesondere grossdieselmotoren |
FR2238372A5 (de) * | 1973-07-19 | 1975-02-14 | Dampers | |
DD123962A1 (de) | 1975-12-24 | 1977-01-26 | ||
GB8413800D0 (en) * | 1984-05-30 | 1984-07-04 | Ae Plc | Manufacture of pistons |
GB8622538D0 (en) * | 1986-09-18 | 1986-10-22 | Ae Plc | Pistons |
US6003479A (en) * | 1997-05-12 | 1999-12-21 | Evans; Mark M. | Piston construction |
US6155157A (en) | 1998-10-06 | 2000-12-05 | Caterpillar Inc. | Method and apparatus for making a two piece unitary piston |
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 |
DE10244512A1 (de) * | 2002-09-25 | 2004-04-15 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
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US7104183B2 (en) * | 2004-07-07 | 2006-09-12 | Karl Schmidt Unisia, Inc. | One-piece steel piston |
DE102005034306A1 (de) * | 2004-10-30 | 2006-05-18 | Ks Kolbenschmidt Gmbh | Verfahren zur Herstellung eines Kolbens einer Brennkraftmaschine zur Bildung einer Bewehrung einer Brennraummulde des Kolbens |
DE102006027355A1 (de) * | 2006-06-13 | 2007-12-20 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung |
DE102006055251A1 (de) * | 2006-11-23 | 2008-05-29 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
CN101092914A (zh) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | 带封闭内冷油腔的焊接式锻钢整体活塞及其制造方法 |
DE102007044106A1 (de) * | 2007-09-15 | 2009-03-19 | Mahle International Gmbh | Zweiteiliger Kolben für einen Verbrennungsmotor |
KR101554759B1 (ko) * | 2007-12-20 | 2015-09-21 | 말레 인터내셔널 게엠베하 | 내연 기관용 피스톤에 링 부재를 고정하기 위한 방법 |
DE102007061601A1 (de) * | 2007-12-20 | 2009-06-25 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung |
DE102008038325A1 (de) * | 2007-12-20 | 2009-06-25 | Mahle International Gmbh | Verfahren zum Befestigen eines Ringelementes auf einem Kolben für einen Verbrennungsmotor |
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US9593641B2 (en) * | 2011-09-21 | 2017-03-14 | Mahle International Gmbh | Laser welded piston assembly |
WO2014059221A1 (en) * | 2012-10-12 | 2014-04-17 | Mahle International Gmbh | Piston with cooling gallery and cooling gallery fins |
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-
2013
- 2013-09-18 WO PCT/EP2013/069368 patent/WO2014048810A1/de active Application Filing
- 2013-09-18 MX MX2015003487A patent/MX2015003487A/es unknown
- 2013-09-18 CN CN201380049820.3A patent/CN104662277B/zh active Active
- 2013-09-18 DE DE102013218709.2A patent/DE102013218709A1/de not_active Ceased
- 2013-09-18 EP EP13763077.8A patent/EP2900992A1/de not_active Withdrawn
- 2013-09-18 BR BR112015005723A patent/BR112015005723A2/pt not_active Application Discontinuation
- 2013-09-18 US US14/431,635 patent/US20150226151A1/en not_active Abandoned
-
2017
- 2017-06-07 US US15/616,104 patent/US20170328302A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007270813A (ja) * | 2006-03-31 | 2007-10-18 | Yamaha Motor Co Ltd | 内燃機関用ピストン |
US20120037111A1 (en) * | 2010-08-10 | 2012-02-16 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
US20120222632A1 (en) * | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2013083342A1 (de) * | 2011-12-09 | 2013-06-13 | Ks Kolbenschmidt Gmbh | Kolben für brennkraftmaschinen |
WO2013167105A1 (de) * | 2012-05-05 | 2013-11-14 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor |
Also Published As
Publication number | Publication date |
---|---|
WO2014048810A1 (de) | 2014-04-03 |
US20170328302A1 (en) | 2017-11-16 |
DE102013218709A1 (de) | 2014-03-27 |
BR112015005723A2 (pt) | 2017-07-04 |
CN104662277A (zh) | 2015-05-27 |
US20150226151A1 (en) | 2015-08-13 |
CN104662277B (zh) | 2019-06-18 |
MX2015003487A (es) | 2015-09-25 |
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