EP3347585A1 - Kühlung eines kolbens mittels natriumgefüllter röhrchen - Google Patents
Kühlung eines kolbens mittels natriumgefüllter röhrchenInfo
- Publication number
- EP3347585A1 EP3347585A1 EP16766898.7A EP16766898A EP3347585A1 EP 3347585 A1 EP3347585 A1 EP 3347585A1 EP 16766898 A EP16766898 A EP 16766898A EP 3347585 A1 EP3347585 A1 EP 3347585A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- coolant
- space
- coolant container
- container
- 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
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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/105—Salt cores
-
- 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
- F01P9/00—Cooling having pertinent characteristics not provided for in, or of interest apart from, groups F01P1/00 - F01P7/00
- F01P2009/005—Cooling with melting solids
-
- 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
- F01P3/10—Cooling by flow of coolant through 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
Definitions
- the invention relates to a piston and a method for producing such a piston according to the features of the respective preambles of the two independent claims.
- a piston of an internal combustion engine which has an upper part with a ring field, wherein a piston shaft connects to the upper part and in the piston at least one space, here elongated holes, is introduced, in which a coolant , here an alkali metal, is filled.
- a coolant here an alkali metal
- the spaces are filled with the coolant immediately and closed after filling.
- the closure takes place here by means of a ball which is pressed into the filling opening.
- the refrigerant used is an alkali metal, in particular sodium.
- the invention provides that the coolant is introduced into a coolant container and the coolant container is inserted into the at least one space in the piston.
- the space is or will be closed by a closure means after insertion of the coolant container.
- This closure element can be the known ball, but also any other separate closure means can be used and brought into operative connection with the filling opening of the space in order to close this space with the coolant container located therein. If a closure means is used, it is conceivable that the coolant reservoir is arranged in a form-fitting manner in the space and thus it can no longer move relative to the piston.
- the coolant container after closing the room still has a certain play in the room and thus a movement is possible.
- the fixed arrangement has the advantage that heat can be better transferred to the coolant and can be dissipated in areas significantly less contaminated in terms of temperature.
- the movement of the coolant reservoir in the space has the same advantage because it can also absorb heat at highly loaded areas due to the up and down movement of the piston in operation in the cylinder of the internal combustion engine and at less highly loaded areas when it is in the room emotional.
- thedemit- tel notionnis after insertion into the room in its position is fixed there
- This can be done for example by pressing, gluing or other suitable measures that cause the coolant container after insertion into the associated space in the piston is permanently fixed in position.
- this has the advantage that, as already described above, a good heat transfer and thus heat removal from the high-temperature-loaded in temperature-less loaded area is given.
- the closing of the insertion of the space can be omitted, thereby making the production of the piston is simplified once again.
- this insertion opening is preferably provided in the interior of the piston, which is no longer processed.
- the insertion opening in the outer region of the piston for example in the area above, below or within the ring field or the shaft area, can be used with a separate closure means, which is revised after insertion and closing.
- both when closing the insertion opening in the inner region or in the outer region of the piston it can be thought of instead of welding or soldering the insertion opening instead of a separate closure element, or the like. Again, the closed insertion can be revised after the closing process.
- thedemitteibeggiitn is elongated and cylindrical, for example, as a tube is formed.
- This has the advantage that, due to this elongated extent of the coolant container, the one end is arranged in a temperature-high-loaded area and the other end in a temperature-less loaded area.
- the coolant contained in the coolant container by appropriate alignment of the coolant container absorb the heat in the highly loaded areas and dissipate the direction of the less polluted areas.
- This heat transport can take place continuously, in particular when the coolant container is completely filled with the coolant. But it is also a discontinuous heat transfer conceivable, especially if the coolant reservoir is not completely filled with the coolant and this can move back and forth between the two ends of the coolant reservoir.
- the space for accommodating the coolant container is introduced into this chamber either with production of the piston (eg by pouring the piston with lost cores, which then rinses out and forming the space for receiving the coolant container) or space after production the piston is introduced, for example by drilling or the like.
- the coolant container is poured into the piston.
- the separately manufactured and filled with coolant and closed coolant container is provided and inserted into a casting mold of the piston. This insertion is done comparatively as the insertion of a lost core, for example for the production of cooling cavities (eg annular cooling channels) in a casting tool of the piston.
- the at least onedemittebereheatitnis be attached to a quill of the casting tool. After closing the casting tool, it is filled with molten casting, which surrounds the at least one coolant center (and possibly further existing lost cores), so that the coolant condition after the solidification of the casting melt is located at its designated location within the piston and can take up its function ,
- molten casting which surrounds the at least one coolant center (and possibly further existing lost cores)
- FIGS. 1 to 3 An exemplary embodiment of a piston according to the invention, by means of which also the production steps are explained, is described below and shown in FIGS. 1 to 3.
- Reference numeral 1 shows a one-piece piston 1 which has an upper part 2.
- a piston skirt 3 adjoins the upper part 2, wherein in this type of piston the two opposite sections of the piston skirt 3 are connected via connecting walls 4 in which a pin bore 5 is also arranged.
- the bolt holes 5 for receiving the ends of a piston pin may be present, but need not.
- the ends of the piston pin can also be arranged on the underside of the upper part 2 in a different manner.
- the upper part 2 has a ring field 6 in a manner known per se, wherein a central region (FIG. 1) is designated 7 in the inner region of the piston 1.
- a combustion chamber 8 in the upper part 2 of the Kolbensl a combustion chamber 8, as well as an annular circumferential cooling channel 9 may be present.
- a combustion chamber 8 in the upper part 2 of the Kolbensl a combustion chamber 8, as well as an annular circumferential cooling channel 9 may be present.
- I can combustion chamber trough 8 and / or cooling channel 9 may be present, but need not.
- FIG. 1 10 shows a closure of openings 11 of spaces 12 located inside the piston 1.
- the spaces 12 in the piston body Solid material introduced.
- the introduction can be done as already described by lost cores, which are rinsed out.
- the respective space 12 by suitable methods, such as. As drilling, milling or the like, are introduced. This can be seen, for example, with reference to the piston according to FIG. 2, where the spaces 12 are arranged obliquely in the piston 1 and in the direction of the central area 7.
- coolant containers 13, which have been previously filled and filled with coolant, as shown in FIG. 3, are inserted into the spaces 2 provided for this purpose.
- the associated openings 11 of the space 12 are closed or the respective coolant container 13 is inserted into the space 12 in such a way that it is permanently fixed in position there after completion of the insertion process.
- This position fixation must necessarily be such that the coolant container 13 can not move out of the space 12 during the up and down movement of the piston 1 in the cylinder of the internal combustion engine.
- the spaces 12 and, accordingly, also the coolant containers 13 are of elongated and cylindrical design.
- This elongated and cylindrical configuration is allowed to make coolant container 13 in a simple manner by using pipe material, which is closed for example at one end and then the coolant is filled and then in turn the other end is gas-tight.
- this elongate design has the advantage that the piston 1, if over- is only slightly weakened in its strength when the spaces 12 are introduced.
- Another advantage is the fact that due to the elongated extent of the cooling medium container 12 a very good heat transfer from the high temperature-sensitive areas (in the embodiment, for example, the inner dome of the combustion chamber 8) can be carried out in the direction of temperature less heavily loaded areas.
- any suitable coolant comes into consideration.
- alkali metals such as sodium, since they have a very good heat transfer in the temperature working range of the piston 1.
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 |
|---|---|---|---|
| DE102015217468 | 2015-09-11 | ||
| PCT/EP2016/071342 WO2017042356A1 (de) | 2015-09-11 | 2016-09-09 | Kühlung eines kolbens mittels natriumgefüllter röhrchen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3347585A1 true EP3347585A1 (de) | 2018-07-18 |
| EP3347585B1 EP3347585B1 (de) | 2021-04-07 |
Family
ID=56943493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16766898.7A Active EP3347585B1 (de) | 2015-09-11 | 2016-09-09 | Kühlung eines kolbens mittels natriumgefüllter röhrchen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10787990B2 (de) |
| EP (1) | EP3347585B1 (de) |
| CN (1) | CN108026862B (de) |
| DE (1) | DE102016116984A1 (de) |
| MX (1) | MX2018002866A (de) |
| WO (1) | WO2017042356A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102018109205A1 (de) | 2017-04-19 | 2018-10-25 | Ks Kolbenschmidt Gmbh | Kolben in Strukturbauweise |
| US11566581B2 (en) | 2017-11-14 | 2023-01-31 | Ks Kolbenschmidt Gmbh | Steel piston with optimized design |
| DE102020209803A1 (de) | 2020-08-04 | 2022-02-10 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor und Herstellungsverfahren eines solchen |
| DE102020213358A1 (de) | 2020-10-22 | 2022-04-28 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor mit Zapfenkühlung |
| DE102021205709A1 (de) | 2021-06-07 | 2022-12-08 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor mit verbesserter Kühlung des Kolbenbodens |
| DE102021205707A1 (de) | 2021-06-07 | 2022-12-08 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor mit verbesserter Kühlung des Kolbenbodens |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE726685C (de) * | 1939-09-01 | 1942-10-19 | Versuchsanstalt Fuer Luftfahrt | Kolben fuer Brennkraftmaschinen |
| DE2613059A1 (de) | 1975-12-01 | 1977-06-08 | Kioritz Corp | Kolben fuer verbrennungsmotoren |
| DE2751156A1 (de) * | 1977-11-16 | 1979-05-17 | Bosch Gmbh Robert | Brennkraftmaschine mit brennraumwaenden, von denen ein teil auf erhoehtem temperaturniveau haltbar ist |
| JPH04265451A (ja) | 1991-02-19 | 1992-09-21 | Suzuki Motor Corp | 二サイクルエンジンのピストン |
| DE10015709B4 (de) * | 2000-03-29 | 2011-08-11 | KS Kolbenschmidt GmbH, 74172 | Kolben mit einem ringförmigen Kühlkanal |
| US6904876B1 (en) * | 2004-06-28 | 2005-06-14 | Ford Global Technologies, Llc | Sodium cooled pistons for a free piston engine |
| DE102004038946A1 (de) * | 2004-08-11 | 2006-02-23 | Mahle International Gmbh | Kühlkanalkolben für einen Verbrennungsmotor mit Wärmerohren |
| DE102011111319A1 (de) | 2011-08-26 | 2013-02-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
| DE102011113800A1 (de) * | 2011-09-20 | 2013-03-21 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
| DE102012207951B4 (de) * | 2012-05-11 | 2022-09-22 | Man Energy Solutions Se | Kolben einer Brennkraftmaschine |
| DE102013002895B4 (de) | 2013-02-20 | 2022-05-19 | Mercedes-Benz Group AG | Kolben für eine Hubkolben-Verbrennungskraftmaschine |
-
2016
- 2016-09-09 WO PCT/EP2016/071342 patent/WO2017042356A1/de not_active Ceased
- 2016-09-09 DE DE102016116984.6A patent/DE102016116984A1/de not_active Withdrawn
- 2016-09-09 CN CN201680052252.6A patent/CN108026862B/zh active Active
- 2016-09-09 US US15/756,684 patent/US10787990B2/en active Active
- 2016-09-09 EP EP16766898.7A patent/EP3347585B1/de active Active
- 2016-09-09 MX MX2018002866A patent/MX2018002866A/es unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US20180252182A1 (en) | 2018-09-06 |
| CN108026862B (zh) | 2021-02-26 |
| WO2017042356A1 (de) | 2017-03-16 |
| DE102016116984A1 (de) | 2017-03-16 |
| MX2018002866A (es) | 2018-06-18 |
| EP3347585B1 (de) | 2021-04-07 |
| CN108026862A (zh) | 2018-05-11 |
| US10787990B2 (en) | 2020-09-29 |
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