EP3347585B1 - Kühlung eines kolbens mittels natriumgefüllter röhrchen - Google Patents

Kühlung eines kolbens mittels natriumgefüllter röhrchen Download PDF

Info

Publication number: EP3347585B1
Authority: EP; European Patent Office
Prior art keywords: piston; coolant; space; coolant container; container
Prior art date: 2015-09-11
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.): Active

Application number

EP16766898.7A

Other languages

German (de)

English (en)

French (fr)

Other versions

EP3347585A1 (de

Inventor

Ralf STIER

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

KS Kolbenschmidt GmbH

Original Assignee

KS Kolbenschmidt GmbH

Priority date (The priority date 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 date listed.)

2015-09-11

Filing date

2016-09-09

Publication date

2021-04-07

2016-09-09 Application filed by KS Kolbenschmidt GmbH filed Critical KS Kolbenschmidt GmbH

2018-07-18 Publication of EP3347585A1 publication Critical patent/EP3347585A1/de

2021-04-07 Application granted granted Critical

2021-04-07 Publication of EP3347585B1 publication Critical patent/EP3347585B1/de

Status Active legal-status Critical Current

2036-09-09 Anticipated expiration legal-status Critical

Images

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.
Pistons are known from the DE2751156 A1 and the DE726685 C .
a piston of an internal combustion engine which has an upper part with an annular zone, a piston skirt adjoining the upper part and at least one space, here elongated bores, 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 that is pressed into the filling opening.
An alkali metal in particular sodium, is used as the coolant.
the invention is therefore based on the object of avoiding the disadvantages described at the outset and of providing a piston and a method for producing such a piston with which the filling of the space with a cooling medium is made simpler.
the coolant is filled into a coolant container and the coolant container is inserted into the at least one space in the piston.
This has the advantage that a coolant container is first provided and filled with the suitable coolant. This happens independently of the manufacture of the piston itself. After the coolant container filled and closed with the coolant has been produced and made available, it can be inserted into the space provided in the piston. This considerably simplifies the production of the piston itself, since there is no longer any need to work with the coolant itself. This is provided in a gastight manner in the coolant container, which can be handled without any problems. This handling is done manually, but can also be automated.
the space is or will be closed with a closure means after the coolant container has been inserted.
This closure element can be the known ball, but any other separate closure means can also 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 container is arranged in the space in a form-fitting manner and it can therefore no longer move relative to the piston.
the coolant container still has a certain amount of play in the room after the room has been closed and movement is therefore possible.
the stationary arrangement has the advantage that heat can be better transferred to the coolant and can be dissipated in areas that are significantly less stressed in terms of temperature.
Moving the coolant container in the room has the same advantage because, due to the up and down movement of the piston in operation in the cylinder of the internal combustion engine, it can also absorb heat at highly stressed areas and release it to less stressed areas when it is in the room emotional.
the coolant container is fixed in its position there after being inserted into the space. This can be done, for example, by pressing in, gluing or other suitable measures which have the effect that the coolant container is permanently fixed in its position after being inserted into the associated space in the piston.
this has the advantage that, as already described above, there is also good heat transfer and thus heat dissipation from the temperature-wise high load to the temperature-wise less stressed area.
this insert opening is preferably provided in the inner region of the piston, which is no longer processed. If the insertion opening is in the outer area of the piston, for example in the area above, below or within the ring field or the shaft area, a separate closure means can be used, which is reworked after the insertion and closure.
a separate closure means can be used, which is reworked after the insertion and closure.
the coolant container is elongated and cylindrical, e.g. as a tube.
This has the advantage that, due to this elongated extension of the coolant container, one end is arranged in an area subject to high temperature loads and the other end is arranged in an area subject to less temperature exposure.
the coolant in the coolant container absorbs the heat in the highly stressed areas and dissipates it in the direction of the less stressed areas.
This heat transport can take place continuously, especially when the coolant container is completely filled with the coolant.
a discontinuous heat transport is also conceivable, especially when the coolant container is not completely filled with the coolant and this can move back and forth between the two ends of the coolant container.
the space for accommodating the coolant container is either introduced into the piston when the piston is manufactured (e.g. by casting the piston with lost cores which are flushed out and then form the space for accommodating the coolant container) or space after manufacture of the piston is introduced, for example by drilling or the like.
the coolant container is cast into the piston.
the separately manufactured and closed coolant container filled with coolant is provided and inserted into a casting mold of the piston. This insertion takes place in a comparative manner to the insertion of a lost core, for example to produce cooling cavities (for example, annular cooling channels) in a casting tool of the piston.
the at least one coolant container can be attached to a quill of the casting tool. After the casting tool has been closed, it is filled with casting melt, which surrounds the at least one coolant container (and possibly other lost cores), so that after the casting melt has solidified, the coolant container is arranged at its intended location within the piston and can take up its function .
a one-piece piston 1, which has an upper part 2, is shown by way of example with the reference number 1.
a piston skirt 3 adjoins the upper part 2, with the two opposite sections of the piston skirt 3 being connected in this type of piston via connecting walls 4 in which a pin bore 5 is also arranged.
the pin bores 5 for receiving the ends of a piston pin can be present, but do not have to be.
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, in a manner known per se, an annular zone 6, with a central area ( Figure 1 ) is designated.
combustion bowl 8 in the upper part 2 of the piston 1, a combustion bowl 8, as well as a ring-shaped circumferential cooling channel 9, can be present.
combustion bowl 8 and / or cooling duct 9 may or may not be present.
Figure 1 10 shows a closure of openings 11 of spaces 12 located inside the piston 1.
the at least one space 12, here several spaces 12, are arranged in the piston 1, ie within its solid material. While in Figure 1 it is assumed that the openings 11 of the spaces 12 are accessible from the central region 7 (inner region of the piston 1) is shown in FIG Figure 2 shown that the openings 11 of the spaces 12 of are accessible from the outside of the piston 1 (for example from the connecting wall 4 or the piston skirt 3).
the spaces 12 are inserted into the piston body in the required number after the piston 1 has been manufactured (more precisely a piston blank) or already during manufacture. Solid material). As already described, it can be introduced through lost cores that are flushed out. Instead, after the production of the piston blank, the respective space 12 can be carried out by suitable methods, such as, for. B. drilling, milling or the like can be introduced. This is shown, for example, on the basis of the piston Figure 2 It can be seen where the spaces 12 are arranged obliquely in the piston 1 and are aligned in the direction of the central region 7.
the spaces 12 and accordingly also the coolant containers 13 are designed to be elongated and cylindrical.
This elongated and cylindrical configuration allows the coolant container 13 to be produced in a simple manner by using pipe material which, for example, is closed at one end and then the coolant is filled and then the other end is again closed in a gastight manner.
this elongated design has the advantage that the piston 1, if at all is only slightly weakened in its strength when the spaces 12 are introduced.
Another advantage is that, due to the elongated extension of the coolant container 12, very good heat transport can take place from the areas exposed to high temperatures (in the exemplary embodiment, for example, the inner dome of the combustion bowl 8) in the direction of areas which are less exposed to temperature.
Any suitable coolant can be used to fill the coolant container 12 and to transport heat.
Alkali metals, such as sodium, for example, are particularly advantageous, since they have very good heat transport in the working temperature 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)

EP16766898.7A 2015-09-11 2016-09-09 Kühlung eines kolbens mittels natriumgefüllter röhrchen Active EP3347585B1 (de)

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 EP3347585A1 (de)	2018-07-18
EP3347585B1 true 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 (es)
EP (1)	EP3347585B1 (es)
CN (1)	CN108026862B (es)
DE (1)	DE102016116984A1 (es)
MX (1)	MX2018002866A (es)
WO (1)	WO2017042356A1 (es)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US11668263B2 (en)	2017-04-19	2023-06-06	Ks Kolbenschmidt Gmbh	Piston with a structured design
DE102018128512A1 (de)	2017-11-14	2019-05-16	Ks Kolbenschmidt Gmbh	Stahlkolben mit optimiertem 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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2751156A1 (de) *	1977-11-16	1979-05-17	Bosch Gmbh Robert	Brennkraftmaschine mit brennraumwaenden, von denen ein teil auf erhoehtem temperaturniveau haltbar ist

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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
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 US US15/756,684 patent/US10787990B2/en active Active
- 2016-09-09 MX MX2018002866A patent/MX2018002866A/es unknown
- 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 EP EP16766898.7A patent/EP3347585B1/de active Active

Patent Citations (1)

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Publication number	Priority date	Publication date	Assignee	Title
DE2751156A1 (de) *	1977-11-16	1979-05-17	Bosch Gmbh Robert	Brennkraftmaschine mit brennraumwaenden, von denen ein teil auf erhoehtem temperaturniveau haltbar ist

Also Published As

Publication number	Publication date
DE102016116984A1 (de)	2017-03-16
US20180252182A1 (en)	2018-09-06
CN108026862A (zh)	2018-05-11
US10787990B2 (en)	2020-09-29
WO2017042356A1 (de)	2017-03-16
EP3347585A1 (de)	2018-07-18
CN108026862B (zh)	2021-02-26
MX2018002866A (es)	2018-06-18

Publication	Publication Date	Title
EP3347585B1 (de)	2021-04-07	Kühlung eines kolbens mittels natriumgefüllter röhrchen
EP1301304B1 (de)	2005-09-14	Werkzeughalter für ein um eine drehachse drehbares werkzeug, insbesondere ein bohr-, fräs- oder reibwerkzeug
EP2992978B1 (de)	2016-10-19	Matrizenmodulsatz für presswerkzeuge zum herstellen von schrauben
DE102008013227B4 (de)	2014-06-05	Verfahren zum Herstellen einer Verbindung eines Getriebebauteils
DE102007014146A1 (de)	2007-11-22	Druckgießwerkzeug
DE10341791B4 (de)	2005-09-29	Hohlkolben für eine Kolbenmaschine und Verfahren zum Herstellen eines Hohlkolbens
EP2738377B1 (de)	2021-04-28	Verfahren zur Herstellung eines Zylinderkurbelgehäuses
DE102016201617A1 (de)	2017-08-03	Kolben einer Brennkraftmaschine
DE19928995B4 (de)	2009-11-05	Werkzeughalter für ein um eine Drehachse drehbares Werkzeug, insbesondere ein Bohr-, Fräs- oder Reibwerkzeug
WO2013072151A1 (de)	2013-05-23	Giessform für einen kolben
WO2014207221A1 (de)	2014-12-31	Speisereinsatz mit isoliertem metallfuss
DE102017127986A1 (de)	2019-05-29	Innengekühltes Ventil mit Ventilboden und Verfahren zu dessen Herstellung
EP2734322B1 (de)	2017-09-06	GIEßKERN EINER GUSSFORM ZUR HERSTELLUNG EINES ZYLINDERS
EP2519756B1 (de)	2013-08-07	Bremssattel für ein fahrzeugbremssystem sowie verfahren und vorrichtung zum herstellen eines bremssattels
DE10129046A1 (de)	2003-01-09	Kolben für eine Brennkraftmaschine mit einem Eingußkörper
DE10234539B4 (de)	2005-02-24	Kolben mit einem offen vergossenen Kühlkanal-Ringträger und Verfahren zu seiner Herstellung
EP3341156B1 (de)	2024-04-10	Kolben einer brennkraftmaschine mit alkalimetallkühlung und verfahren zu seiner herstellung
EP0868954B1 (de)	2002-01-16	Vorrichtung sowie Verfahren zur Herstellung eines Gusswerkstückes mit eingegossenem Einlegeteil
DE102017119891A1 (de)	2018-03-08	Kolben, bestehend aus einem Innenteil und einem Außenteil
WO2017133949A1 (de)	2017-08-10	Kolben einer brennkraftmaschine
DE102004042706B3 (de)	2006-03-09	Werkzeug zum Thixoschmieden
DE10114404C2 (de)	2003-10-30	Formkörper (Kern) am Ringträger
DE102005011843B4 (de)	2010-09-23	Verfahren zum Bruchtrennen und Crackeinheit
DE102018107866B4 (de)	2020-01-23	Bimetallischer Kolbenbolzen
DE102015117385A1 (de)	2017-04-13	Verfahren zur Verbindung von Bauteilen und solche Bauteilverbindung

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