EP1099845A2 - Kolben mit einer Verbindung von einem Kühlkanal zu einer Kolbenbolzenbohrung - Google Patents
Kolben mit einer Verbindung von einem Kühlkanal zu einer Kolbenbolzenbohrung Download PDFInfo
- Publication number
- EP1099845A2 EP1099845A2 EP00120969A EP00120969A EP1099845A2 EP 1099845 A2 EP1099845 A2 EP 1099845A2 EP 00120969 A EP00120969 A EP 00120969A EP 00120969 A EP00120969 A EP 00120969A EP 1099845 A2 EP1099845 A2 EP 1099845A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pin bore
- connection
- piston pin
- cooling 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.)
- Withdrawn
Links
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
- F02F3/20—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C21/00—Flasks; Accessories therefor
- B22C21/12—Accessories
- B22C21/14—Accessories for reinforcing or securing moulding materials or cores, e.g. gaggers, chaplets, pins, bars
-
- 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
-
- 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
- B22C9/108—Installation of cores
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
Definitions
- the invention relates to a piston, in particular a piston for internal combustion engines, according to the features of the preamble of claim 1.
- Such a piston is known from the American patent US 4,907,545. That piston has a piston pin bore that receives a piston pin, the piston is connected to a connecting rod via the piston pin.
- the invention is therefore based on the object, the failure of the piston when exceeded to avoid critical load values in the area of the piston pin bore, so that consequential damage cannot occur.
- the cooling duct is connected to the piston pin bore via at least one connection connected. Via this connection, the cooling medium that is inside the Piston gets into the cooling channel, also get into the piston pin bore, so that this Piston pin bore with the piston pin inside is also cooled and lubricated becomes. Lubrication initially reduces friction and then also a seizure and wear of the surface pressure between the piston pin and Piston pin bore avoided.
- the main advantages of the invention are thus avoidance of bolt seizures or bolt grinders as well as basically avoiding bore wear. It also reduces friction, resulting in lower fuel consumption and noise reduction results. Overall, there is a higher resilient piston, so that the combustion temperatures with regard to the combustion and exhaust gas quality and combustion pressures can be raised further.
- the at least one connection is after the piston has been produced can be produced in particular by drilling.
- This has the advantage that it is already finished Pistons or the tools for pistons, especially the molds, unchanged can stay. It is only necessary after manufacture of the piston, at least to introduce a connection between the cooling channel and the piston pin bore. Drilling is a particularly simple option, but this is not the only one Possibility is, but also other are conceivable.
- the at least one connection is during casting of the piston can be produced using a mold body.
- Corresponding moldings are for this (for example salt cores) which are removed (rinsed) after the casting process must, so that the at least one connection between the cooling channel and the piston pin bore is released.
- a pin bore bushing is in the piston pin bore used.
- the invention thus advantageously also works with such pistons, where the piston pin is inserted into the piston pin bore via a pin bore bushing is inserted.
- This construction also has the advantages already mentioned.
- the at least one connection is perpendicular or inclined aligned with an axis of the piston pin bore. So there are two different designs Alignments for the at least one connection are available, including one Combination of the two orientations mentioned is conceivable. Because of this alignment can the connection meet the geometric boundary conditions (especially with regard to to the strength values of the piston) and other requirements. The same also applies to the diameter and the number of connections. In in this context it should be noted that the at least one connection or several connections are arranged in such places in the piston, through which the strength of the piston is not affected.
- FIG. 1 shows a piston 1 as used in internal combustion engines, in particular diesel engines Vehicles.
- the piston 1 points in the direction of the combustion chamber side a ring field 2 known per se. There is still a combustion chamber trough in this area 3 arranged, the geometric shape is shown here only as an example.
- the piston 1 has a piston pin bore 4 which is perpendicular to the main axis or perpendicular to the piston stroke movement axis.
- the piston pin bore 4 takes a piston pin 5, with the piston pin 5 and the piston pin bore 4 having a positive fit Form a connection.
- the piston pin 5 transmits the forces to a connecting rod, which in Figure 1 is shown only schematically.
- a circumferential cooling channel 6 is arranged inside the ring field 2 and outside the combustion chamber trough 3 is in the upper area of the piston 1, a circumferential cooling channel 6 is arranged.
- This cooling channel 6 (cavity cooling channel) is used for internal cooling of the piston 1 with a cooling medium, usually engine oil, filled, which is injected into the interior of the piston 1.
- a cooling medium usually engine oil, filled, which is injected into the interior of the piston 1.
- This a connection 7 or too several connections 7 have the purpose that the cooling medium from the cooling channel 6 in preferred amount in the piston pin bore 4, that is, in the operation of the internal combustion engine between piston pin bore 4 and piston pin 5 flows to improve the To contribute lubrication and cooling in this area.
- connection 7 The arrangement, the length as well the diameter of the connection 7 is with regard to the position of the cooling channel 6 and Adjust the piston pin bore 4 in such a way that in particular the strength of the piston 1 preserved. Is this connection 7 or by several connections 7 the strength of the piston 1 is not affected, is yet another advantage of the invention Connections 7 to see that this saves weight.
- FIG. 1 shows that the one connection 7 (when viewing FIG. 1 the left connection) obliquely to the main axis or to the piston stroke movement axis from the cooling channel 6 runs in the direction of the piston pin bore 4, while when viewing FIG right connection 7 runs perpendicular to this piston stroke movement axis.
- Alternative to The arrangement of the connections 7 shown in FIG. 1 can also have multiple connections 7 be provided over the longitudinal extent of the piston pin bore 4 such that several connections 7, starting from the cooling channel 6, in the direction of the piston pin bore 4 extend in a star shape.
- a piston 1 is shown in FIG of the ring field 2 connects and on the other hand in the piston pin bore 4 a piston pin bore bushing 8 is inserted.
- connection 7 or even several connections 7 independently of the position and the geometric configuration of the cooling channel 6 are used can to the cooling medium from the cooling channel 6 in the direction of the piston pin bore 4th to transport.
- the cooling duct 6 can be located in an area between the piston pin bore 4 and a piston combustion chamber surface 9. He also does not have to go around the combustion chamber trough 3 run, but can also have other geometric shapes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
- Figur 1:
- einen Kolben mit einer Verbindung zwischen einem Kühlkanal und einer Kolbenbolzenbohrung,
- Figur 2:
- einen mit einer Verbindung zwischen einem Kühlkanal und einer Kolbenbolzenbohrung mit eingesetzter Kolbenbolzenbohrungsbuchse.
Claims (7)
- Kolben (1), insbesondere für eine Brennkraftmaschine, mit einer Kolbenbolzenbohrung (4) zur Aufnahme eines Kolbenbolzens (5) sowie mit einem im Bereich zwischen der Kolbenbolzenbohrung (4) und einer Kolbenbrennraumfläche (9), insbesondere innerhalb eines Ringfeldes (2), angeordneten Kühlkanal (6), dadurch gekennzeichnet, daß der Kühlkanal (6) über zumindest eine Verbindung (7) mit der Kolbenbolzenbohrung (4) verbunden ist.
- Kolben (1) nach Anspruch 1, dadurch gekennzeichnet, daß die zumindest eine Verbindung (7) nach Herstellung des Kolbens (1) insbesondere durch Bohren herstellbar ist.
- Kolben (1) nach Anspruch 1, dadurch gekennzeichnet, daß die zumindest eine Verbindung (7) beim Gießen des Kolbens (1) mittels Gießformkörper herstellbar ist.
- Kolben (1) nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, daß ausgehend von dem Kühlkanal (6) sich mehrere Verbindungen (7) sternförmig in Richtung der Kolbenbolzenbohrung (4) erstrecken.
- Kolben (1) nach einem der vorhergehenden Ansprüche, dadurch qekennzeichnet, daß in die Kolbenbolzenbohrung (4) eine Bolzenbohrungsbuchse (8) eingesetzt ist.
- Kolben (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zumindest eine Verbindung (7) senkrecht zu einer Achse der Kolbenbolzenbohrung (4), insbesondere der Kolbenhubbewegungsachse (2) ausgerichtet ist.
- Kolben (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die zumindest eine Verbindung (7) schräg zu einer Achse der Kolbenbolzenbohrung (4), insbesondere der Kolbenhubbewegungsachse, ausgerichtet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19954725 | 1999-11-12 | ||
DE1999154725 DE19954725A1 (de) | 1999-11-12 | 1999-11-12 | Kolben mit einer Verbindung von einem Kühlkanal zu einer Kolbenbolzenbohrung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1099845A2 true EP1099845A2 (de) | 2001-05-16 |
EP1099845A3 EP1099845A3 (de) | 2002-02-13 |
Family
ID=7928987
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00120969A Withdrawn EP1099845A3 (de) | 1999-11-12 | 2000-09-27 | Kolben mit einer Verbindung von einem Kühlkanal zu einer Kolbenbolzenbohrung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1099845A3 (de) |
DE (1) | DE19954725A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012055964A1 (de) * | 2010-10-29 | 2012-05-03 | Federal-Mogul Nürnberg GmbH | Kolben für einen verbrennungsmotor |
EP3502452A1 (de) * | 2017-12-21 | 2019-06-26 | MAN Truck & Bus AG | Kolben für eine hubkolben-verbrennungskraftmaschine |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10100955A1 (de) | 2001-01-11 | 2002-07-18 | Mahle Gmbh | Verfahren zur Herstellung eines Ringträgers mit angeschweißtem Blechkühlkanal |
DE10227372B4 (de) * | 2002-06-20 | 2005-09-01 | Ks Kolbenschmidt Gmbh | Kolben mit einer Ausnehmung zur Aufnahme von einem Schmiermittel |
DE10259098A1 (de) * | 2002-12-18 | 2004-07-15 | Ks Kolbenschmidt Gmbh | Verfahren zur Herstellung eines Kühlkanalkolbens |
DE102005061075A1 (de) | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung |
DE102017130691A1 (de) | 2017-12-20 | 2019-06-27 | Man Truck & Bus Ag | Vorrichtung zum Schmieren eines Pleuellagers |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4907545A (en) | 1988-12-28 | 1990-03-13 | Caterpillar Inc. | Liquid cooled piston ring carrier assembly and piston using same |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2369906A (en) * | 1941-12-29 | 1945-02-20 | Aluminum Co Of America | Engine cooled piston |
US2407429A (en) * | 1944-05-19 | 1946-09-10 | Fairbanks Morse & Co | Wrist pin assembly |
CH352529A (de) * | 1956-07-14 | 1961-02-28 | Mahle Kg | Thermisch beanspruchter Brennkraftmaschinenteil aus Leichtmetall mit kreisförmigem Querschnitt und von seiner Wandung umschlossenen Ringkanal |
DE1141494B (de) * | 1960-03-19 | 1962-12-20 | Karl Schmidt Ges Mit Beschraen | Gekuehlter Kolben fuer Brennkraftmaschinen, vorzugsweise aus Leichtmetall |
US3215130A (en) * | 1963-08-30 | 1965-11-02 | Mahle Kg | Multipart oil cooled internal combustion engine piston |
SE422979B (sv) * | 1978-09-06 | 1982-04-05 | Bofors Ab | Flytande kolvtapp till forbrenningsmotor med oljekyld kolv |
DE4040611A1 (de) * | 1990-12-19 | 1992-07-02 | Man B & W Diesel Ag | Jet-kolbenkuehlung |
DE4135237A1 (de) * | 1991-10-25 | 1993-04-29 | Mak Maschinenbau Krupp | Kolben-pleuel-anordnung |
DE19834138C1 (de) * | 1998-07-29 | 1999-11-11 | Daimler Chrysler Ag | Brennkraftmaschine |
-
1999
- 1999-11-12 DE DE1999154725 patent/DE19954725A1/de not_active Ceased
-
2000
- 2000-09-27 EP EP00120969A patent/EP1099845A3/de not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4907545A (en) | 1988-12-28 | 1990-03-13 | Caterpillar Inc. | Liquid cooled piston ring carrier assembly and piston using same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012055964A1 (de) * | 2010-10-29 | 2012-05-03 | Federal-Mogul Nürnberg GmbH | Kolben für einen verbrennungsmotor |
EP3502452A1 (de) * | 2017-12-21 | 2019-06-26 | MAN Truck & Bus AG | Kolben für eine hubkolben-verbrennungskraftmaschine |
DE102017130962A1 (de) * | 2017-12-21 | 2019-06-27 | Man Truck & Bus Ag | Kolben für eine Hubkolben-Verbrennungskraftmaschine |
Also Published As
Publication number | Publication date |
---|---|
EP1099845A3 (de) | 2002-02-13 |
DE19954725A1 (de) | 2001-05-23 |
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