EP2867509A1 - Besondere anordnung einer kühlkanalverbindungsbohrung eines kühlkanales - Google Patents
Besondere anordnung einer kühlkanalverbindungsbohrung eines kühlkanalesInfo
- Publication number
- EP2867509A1 EP2867509A1 EP13731137.9A EP13731137A EP2867509A1 EP 2867509 A1 EP2867509 A1 EP 2867509A1 EP 13731137 A EP13731137 A EP 13731137A EP 2867509 A1 EP2867509 A1 EP 2867509A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooling channel
- piston
- cooling
- cooling duct
- channel
- 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.)
- Ceased
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 58
- 238000002485 combustion reaction Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000005304 joining Methods 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- 239000002826 coolant Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003466 welding 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
- F02F3/20—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass 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
- F02F2003/0061—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
-
- 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
- F02F3/28—Other pistons with specially-shaped head
-
- 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
- Y10T29/49274—Piston ring or piston packing making
Definitions
- the invention relates to a method for producing a cooling channel piston according to the preamble of claim 1 and a cooling channel piston of an internal combustion engine produced thereafter.
- Coolant piston for internal combustion engines are basically known in the art. These have a radially encircling cooling channel arranged behind a ring field, in which a cooling medium, in particular oil circulates. This cooling medium is introduced into the cooling channel via at least one inlet opening, in particular injected, then circulated in the cooling channel and exits again at at least one outlet opening in order to remove the heat in the piston bottom of the cooling channel. Within the cooling channel is around the piston axis around another cooling space, often below a combustion bowl, available. Such a cooling channel piston is known for example from DE 10 2007 018 932 A1.
- the cooling channel piston of DE 10 2007 018 932 A1 has an outer circumferential annular cooling channel and, approximately below a combustion bowl, a dome-shaped cooling chamber. With this construction, it is possible, for example, that a cooling medium is injected from an injection nozzle via an inlet opening into the outer annular, radially running cooling channel, circulates there and passes via at least one, preferably several, transfer openings into the inner cooling space.
- the cooling medium can escape from the central cooling chamber via a central bore, through which the piston stroke axis passes, in order to remove the heat in the piston bottom (that is, the region located behind the annular field).
- a circulation flow in the opposite direction is also possible.
- the contour of the inner cooling channel (or cooling chamber) is designed according to constant wall thickness towards the combustion chamber recess. Therefore, at any angle to the axis of the transfer hole these holes could be introduced by first with a cutter, the material at the point at which the hole is to be introduced, is lowered and then after a tool change the transfer hole is drilled.
- this manufacturing step is complicated, since two tools must be used, so that two successive manufacturing steps and / or a tool change is required, which is disadvantageous in particular in the mass production of such cooling channel piston.
- the invention is therefore based on the object to improve a manufacturing method for crossing holes in cooling channel piston, in particular with regard to reduced production costs. This object is solved by the features of patent claim 1.
- the contour of the inner surface of the internal cooling channel or cooling space is designed such that, in cross section, the entry angle of the transfer opening is between 85 ° and 95 °, preferably between 87 ° and 93 °, more preferably between 89 ° and 91 °, Finally, preferably exactly 90 °.
- top, bottom, left, right, front, back, etc. refer exclusively to the example representation and position of the device and other parts selected in the figure. These terms are not meant to be limiting, that is to say that these relationships may change as a result of different working positions and / or mirror-symmetrical design or the like.
- the FIGURE shows a sectional view of a cooling channel piston 1 produced by the method according to the invention.
- the cooling channel 1 has a radially encircling cooling channel 2. Below the combustion bowl 3, a cooling space 4 is arranged, which can be filled with a cooling medium, regular engine oil. Between the cooling channel 2 and the cooling chamber 4 are transfer channels 5, designed in particular as holes provided. Through these transfer channels, the cooling medium from the cooling channel can get into the cavity and vice versa.
- the cooling channel piston 1 is composed of a piston upper part 6 and a piston lower part 7 together. A joining seam 8 forms the contact point between the upper piston part 6 and the lower piston part 7. At the periphery of the cooling channel piston 1 has annular grooves 9 for receiving piston rings, not shown here.
- the contour of the inner surface of the inner cooling channel 2 or cooling chamber 4 is designed so that in cross section of the entry angle ⁇ of the transfer opening 5 between 85 ° and 95 °, preferably between 87 ° and 93 °, more preferably between 89 ° and 91 °, finally preferably exactly 90 °.
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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012211037 | 2012-06-27 | ||
DE102012218963 | 2012-10-18 | ||
PCT/EP2013/063141 WO2014001256A1 (de) | 2012-06-27 | 2013-06-24 | Besondere anordnung einer kühlkanalverbindungsbohrung eines kühlkanales |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2867509A1 true EP2867509A1 (de) | 2015-05-06 |
Family
ID=48692505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13731137.9A Ceased EP2867509A1 (de) | 2012-06-27 | 2013-06-24 | Besondere anordnung einer kühlkanalverbindungsbohrung eines kühlkanales |
Country Status (5)
Country | Link |
---|---|
US (1) | US10221807B2 (de) |
EP (1) | EP2867509A1 (de) |
CN (1) | CN104603436A (de) |
DE (1) | DE102013211953A1 (de) |
WO (1) | WO2014001256A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9797337B2 (en) | 2015-07-10 | 2017-10-24 | Mahle International Gmbh | Oil-cooled piston for an internal combustion engine |
WO2018192959A1 (de) | 2017-04-19 | 2018-10-25 | Ks Kolbenschmidt Gmbh | Kolben in strukturbauweise |
US11098676B1 (en) * | 2020-09-21 | 2021-08-24 | GM Global Technology Operations LLC | Radial lip piston profile for easy forgeability |
DE102021213333A1 (de) | 2021-11-26 | 2023-06-01 | Federal-Mogul Nürnberg GmbH | Kolben mit allseitig geschlossenen und mit Kühlmedium befüllten Kühlhohlräumen |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009056917A1 (de) * | 2009-12-03 | 2011-06-09 | Mahle International Gmbh | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7335155U (de) | 1974-12-12 | Maschinenfabrik Augsburg Nuernberg Ag | Mehrteiliger Kolben für Brennkraftmaschinen, insbesondere Großdieselmotoren | |
US3613521A (en) * | 1968-11-07 | 1971-10-19 | Komatsu Mfg Co Ltd | Piston for internal combustion engine |
DE102006002949A1 (de) * | 2006-01-21 | 2007-08-02 | Ks Kolbenschmidt Gmbh | Kühlkanalkolben für eine Brennkraftmaschine |
DE102007018932A1 (de) | 2007-04-21 | 2008-10-23 | Ks Kolbenschmidt Gmbh | Belastungsoptimierter Innenraum eines Kolbens |
DE102008011922A1 (de) * | 2008-02-29 | 2009-09-03 | Ks Kolbenschmidt Gmbh | Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens |
DE102008056203A1 (de) * | 2008-11-06 | 2010-05-12 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
DE102010015568A1 (de) * | 2010-04-19 | 2011-10-20 | Ks Kolbenschmidt Gmbh | Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen |
DE102011111319A1 (de) * | 2011-08-26 | 2013-02-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
-
2013
- 2013-06-24 US US14/411,401 patent/US10221807B2/en active Active
- 2013-06-24 EP EP13731137.9A patent/EP2867509A1/de not_active Ceased
- 2013-06-24 DE DE102013211953.4A patent/DE102013211953A1/de not_active Ceased
- 2013-06-24 CN CN201380031706.8A patent/CN104603436A/zh active Pending
- 2013-06-24 WO PCT/EP2013/063141 patent/WO2014001256A1/de active Application Filing
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009056917A1 (de) * | 2009-12-03 | 2011-06-09 | Mahle International Gmbh | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor |
Non-Patent Citations (1)
Title |
---|
See also references of WO2014001256A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20150159584A1 (en) | 2015-06-11 |
US10221807B2 (en) | 2019-03-05 |
DE102013211953A1 (de) | 2014-01-02 |
WO2014001256A1 (de) | 2014-01-03 |
CN104603436A (zh) | 2015-05-06 |
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Extension state: BA ME |
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DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: KS KOLBENSCHMIDT GMBH |
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