EP2288800B1 - Piston for an internal combustion engine - Google Patents
Piston for an internal combustion engine Download PDFInfo
- Publication number
- EP2288800B1 EP2288800B1 EP09765817A EP09765817A EP2288800B1 EP 2288800 B1 EP2288800 B1 EP 2288800B1 EP 09765817 A EP09765817 A EP 09765817A EP 09765817 A EP09765817 A EP 09765817A EP 2288800 B1 EP2288800 B1 EP 2288800B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cooling channel
- level
- outflow
- inflow
- 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.)
- Not-in-force
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 16
- 238000001816 cooling Methods 0.000 claims description 48
- 230000007704 transition Effects 0.000 claims description 3
- 150000003839 salts Chemical group 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
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
- 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
- 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
Definitions
- the invention relates to a piston for an internal combustion engine.
- the WO 03/098022 relates to a piston in which the cooling channel from the inlet to the outlet continuously widens in the direction of a lower level.
- the DE 10 2004 043 720 A1 discloses a piston according to the preamble of claim 1.
- the invention has for its object to provide a piston for an internal combustion engine, which is improved in terms of cooling, in particular the critical areas.
- this has at least one cooling channel, which is located exclusively in the region of at least one inlet and at least one outflow at a comparatively low level, which is comparatively remote from the piston crown, and otherwise at a consistently higher level, which is comparatively closer to the piston crown.
- the cooling channel in its predominant course, can be particularly close to the critical points, such as e.g. the trough edge and the uppermost annular groove are formed.
- the cooling channel can be largely completely at the level of a ring carrier, so that this critical region can be cooled particularly efficiently. This applies equally to the area of the combustion bowl which adjoins in the direction of the axis of rotation of the piston.
- the cooling channel in the piston according to the invention can be formed substantially completely at the level of the combustion bowl, so that there is a particularly good cooling effect.
- inflow and outflow can be particularly well taken into account in the piston according to the invention.
- the cross-section of the cooling channel is slightly larger than its remaining course in order to ensure a favorable inflow and outflow.
- inflow and outflow can in the inventive piston thereby be formed particularly simple that the cooling channel in the region of at least one inlet and at least one outflow on a lower, that is located farther from the piston crown level.
- the cooling channel is thus slightly lowered in these zones from the region between the uppermost annular groove and the combustion bowl, so that the cross-sectional enlargement of the cooling channel can be provided without endangering the strength. Namely, a sufficient material thickness can be maintained both to the uppermost annular groove and to the combustion bowl in order to continue to meet the strength requirements.
- the cooling channel is at the lower level exclusively in the region of the inlet and at least one outflow, and otherwise remains at substantially the same, higher level, a particularly efficient cooling of the critical areas at the top can take place over substantially the entire circumference Ring groove and the combustion bowl are guaranteed.
- the cooling channel can have further inflows and outflows.
- one or more drains preferably with a comparatively small cross-section, may be provided in its course, in order to lubricate the bearing between connecting rod and piston pin. In the area of these outflows, however, the cooling channel does not necessarily have to go to the lower level because no broadening is necessary here.
- the cross section of the cooling channel in the region of at least one inflow and / or outflow relative to the remainder of the cooling channel is increased.
- a gradual, inclined rise is provided with kinks or steps between, for example, the inclined rise and the higher or lower level area.
- Those portions of the cooling channel that are at the lower level, including the inclined transitions to the higher level, may each include an angle of about 50-70 degrees, more preferably about 60-65 degrees.
- the cross-sectional shape of the cooling channel is currently preferred that this is largely oval, with the longer axis of the oval extends substantially in the direction of the axis of rotation of the piston, but may be slightly inclined relative to this.
- this inclination is currently an angle of about 7 ° and / or a slope, which is directed at the top to the outside, preferred. Due to the generally oval design, an efficient cooling of the area "between" upper annular groove and combustion bowl can be ensured, and it can simultaneously necessary material thicknesses are maintained. The inclination supports this effect in view of the typical shape of a combustion bowl.
- inflow and outflow be diametrically opposed.
- the piston can be installed in any orientation, and any opening can be used as inflow or outflow.
- Fig. 1 is first shown in a perspective view of the salt core 20, which is used for the production of the piston according to the invention.
- the salt core has, as is the case for the subsequent cooling channel, in the embodiment shown, two diametrically opposite regions, which are widened in cross section with respect to the remaining cooling channel and are later used as inflow and outflow 14.
- the Cooling channel in the region of inflow and outflow 14 at a lower level than the rest of the cooling channel.
- For inflow and outflow 14 is in Fig. 1 in addition to recognizing that the broadening of the cross-section in the said embodiment in the direction of the axis of rotation 22 (see. Fig. 2 ) he follows.
- the cross section of the cooling channel with the exception of the enlarged area at the inlet and outlet, but including the slopes 18 remains largely the same.
- the cross section is largely oval, wherein the longer axis extends substantially parallel or at most with an acute angle to the axis of rotation 22 of the piston.
- an angle ⁇ of, for example, about 7 ° is formed between the axis of rotation 22 of the piston and the longer axis of the oval, which forms the cross section of the cooling channel.
- Fig. 3 is complementary to recognize how the cooling channel 24 can be brought by the inventive measure in a favorable manner to the level of a ring carrier 26 and the combustion bowl 28.
- the cooling channel 24 fits into the region between the annular carrier 26 and the combustion bowl 28 and can cool these critical zones particularly efficiently without jeopardizing the strength due to material thicknesses which are too low.
- the cooling channel 24 in the embodiment shown with respect to its lower edge substantially at the level of the lower edge of the ring carrier 26 and even slightly above the bottom of the combustion chamber 28th located.
- the areas of inflow and outflow can also be in the design according to Fig. 3 be increased without jeopardizing the material thickness between ring carrier 26 and combustion bowl 28, since the cooling channel 24 is lowered in these areas to the lower level 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
Die Erfindung betrifft einen Kolben für einen Verbrennungsmotor.The invention relates to a piston for an internal combustion engine.
Auf dem Gebiet der Verbrennungsmotoren muss allgemein für eine ausreichende Kühlung der Kolben gesorgt werden. Ferner erhöhen sich fortlaufend die spezifischen Leistungen der Motoren, insbesondere bei Dieselmotoren, was zu immer höheren Kolbentemperaturen führt. Dies kann die Lebensdauer und die Festigkeit beeinträchtigen. Insofern ist insbesondere an kritischen Stellen, wie z.B. dem Muldenrand und der obersten Ringnut des Kolbens für eine effiziente Kühlung zu sorgen.In the field of internal combustion engines must be provided in general for a sufficient cooling of the piston. Furthermore, the specific performances of the engines are constantly increasing, especially in diesel engines, which leads to ever higher piston temperatures. This can affect the life and strength. In this respect, especially at critical points, e.g. the bowl rim and the top annular groove of the piston for efficient cooling.
Aus der
Die
Die
Der Erfindung liegt die Aufgabe zugrunde, einen Kolben für einen Verbrennungsmotor zu schaffen, der im Hinblick auf die Kühlung, insbesondere der kritischen Bereiche, verbessert ist.The invention has for its object to provide a piston for an internal combustion engine, which is improved in terms of cooling, in particular the critical areas.
Die Lösung dieser Aufgabe erfolgt durch den im Anspruch 1 beschriebenen Kolben.The solution to this problem is achieved by the piston described in claim 1.
Demzufolge weist dieser zumindest einen Kühlkanal auf, der sich ausschließlich im Bereich zumindest eines Zu- und zumindest eines Abflusses auf einem vergleichweise niedrigen, von dem Kolbenboden vergleichweise entfernten Niveau, und im Übrigen auf einem gleichbleibend höheren, vergleichsweise näher zu dem Kolbenboden gelegenen Niveau befindet. Durch die Anordnung auf dem vergleichweise "hohen" Niveau kann der Kühlkanal in seinem überwiegenden Verlauf besonders nah an den kritischen Stellen, wie z.B. dem Muldenrand und der obersten Ringnut ausgebildet werden. Insbesondere kann sich der Kühlkanal weitgehend vollständig auf dem Niveau eines Ringträgers befinden, so dass dieser kritische Bereich besonders effizient gekühlt werden kann. Dies gilt in gleicher Weise für den sich in Richtung der Rotationsachse des Kolbens anschließenden Bereich der Brennraummulde. Auch bezüglich dieser kann der Kühlkanal in dem erfindungsgemäßen Kolben weitgehend vollständig auf dem Niveau der Brennraummulde ausgebildet werden, so dass hier eine besonders gute Kühlwirkung erfolgt.Accordingly, this has at least one cooling channel, which is located exclusively in the region of at least one inlet and at least one outflow at a comparatively low level, which is comparatively remote from the piston crown, and otherwise at a consistently higher level, which is comparatively closer to the piston crown. By virtue of the arrangement at the comparatively "high" level, the cooling channel, in its predominant course, can be particularly close to the critical points, such as e.g. the trough edge and the uppermost annular groove are formed. In particular, the cooling channel can be largely completely at the level of a ring carrier, so that this critical region can be cooled particularly efficiently. This applies equally to the area of the combustion bowl which adjoins in the direction of the axis of rotation of the piston. Also with regard to this, the cooling channel in the piston according to the invention can be formed substantially completely at the level of the combustion bowl, so that there is a particularly good cooling effect.
Gleichzeitig kann den Erfordernissen am Zu- und Abfluss bei dem erfindungsgemäßen Kolben besonders gut Rechnung getragen werden. In diesen Bereichen ist es nämlich vorteilhaft, wenn der Querschnitt des Kühlkanals gegenüber seinem übrigen Verlauf etwas vergrößert ist, um einen günstigen Zu- und Abfluss zu gewährleisten. Ein in dieser Weise vergrößerter Zu- und Abfluss kann bei dem erfindungsgemäßen Kolben dadurch besonders einfach ausgebildet werden, dass sich der Kühlkanal im Bereich zumindest eines Zu- und zumindest eines Abflusses auf einem niedrigeren, d.h. von dem Kolbenboden weiter entfernten Niveau befindet. Der Kühlkanal wird somit in diesen Zonen aus dem Bereich zwischen der obersten Ringnut und der Brennraummulde etwas abgesenkt, so dass die Querschnittsvergrößerung des Kühlkanals vorgesehen werden kann, ohne die Festigkeit zu gefährden. Sowohl zu der obersten Ringnut als auch zu der Brennraummulde kann nämlich eine ausreichende Materialdicke beibehalten werden, um den Festigkeitsanforderungen weiterhin zu genügen.At the same time, the requirements of the inflow and outflow can be particularly well taken into account in the piston according to the invention. In fact, in these areas it is advantageous if the cross-section of the cooling channel is slightly larger than its remaining course in order to ensure a favorable inflow and outflow. An increased in this way inflow and outflow can in the inventive piston thereby be formed particularly simple that the cooling channel in the region of at least one inlet and at least one outflow on a lower, that is located farther from the piston crown level. The cooling channel is thus slightly lowered in these zones from the region between the uppermost annular groove and the combustion bowl, so that the cross-sectional enlargement of the cooling channel can be provided without endangering the strength. Namely, a sufficient material thickness can be maintained both to the uppermost annular groove and to the combustion bowl in order to continue to meet the strength requirements.
Dadurch, dass sich der Kühlkanal ausschließlich im Bereich des Zu- und zumindest eines Abflusses auf dem niedrigeren Niveau befindet, und im Übrigen auf im Wesentlichen demselben, höheren Niveau verbleibt, kann über weitgehend den gesamten Umfang eine besonders effiziente Kühlung der kritischen Bereiche an der obersten Ringnut und der Brennraummulde gewährleistet werden. Es sei erwähnt, dass der Kühlkanal weitere Zu- und Abflüsse aufweisen kann. Insbesondere können in seinem Verlauf ein oder mehrere Abflüsse, bevorzugt mit vergleichsweise kleinem Querschnitt, vorgesehen werden, um die Lagerung zwischen Pleuel und Kolbenbolzen zu schmieren. Im Bereich dieser Abflüsse muss sich der Kühlkanal jedoch nicht notwendigerweise auf das niedrigere Niveau begeben, weil hier keine Verbreiterung notwendig ist.Due to the fact that the cooling channel is at the lower level exclusively in the region of the inlet and at least one outflow, and otherwise remains at substantially the same, higher level, a particularly efficient cooling of the critical areas at the top can take place over substantially the entire circumference Ring groove and the combustion bowl are guaranteed. It should be mentioned that the cooling channel can have further inflows and outflows. In particular, one or more drains, preferably with a comparatively small cross-section, may be provided in its course, in order to lubricate the bearing between connecting rod and piston pin. In the area of these outflows, however, the cooling channel does not necessarily have to go to the lower level because no broadening is necessary here.
Bevorzugte Weiterbildungen des erfindungsgemäßen Kolbens sind in den weiteren Ansprüchen beschrieben.Preferred developments of the piston according to the invention are described in the further claims.
Im Hinblick auf die Anordnung des Kühlkanals auf dem höheren Niveau hat es sich bei ersten Versuchen als günstig erwiesen, wenn die Unterkante des Kühlkanals auf diesem Niveau im Wesentlichen auf derselben Höhe ist, wie die Unterkante eines Ringträgers für die oberste Ringnut. Hierdurch kann eine besonders gute Kühlung der genannten kritischen Bereiche erzielt werden.With regard to the arrangement of the cooling channel at the higher level, it has proved favorable in first attempts, when the lower edge of the cooling channel at this level is substantially at the same height as the lower edge of a ring carrier for the uppermost annular groove. This can be a particularly good cooling of said critical areas can be achieved.
Dies gilt in gleicher Weise und ermöglicht darüber hinaus die gewünschte Querschnittsvergrößerung des Kühlkanals im Bereich des Zu- und Abflusses, wenn sich das genannte untere Niveau etwa 3 - 5 mm, insbesondere 3,5 - 4 mm und besonders bevorzugt etwa 3,8 mm unterhalb des genannten höheren Niveaus befindet.This applies in the same way and also allows the desired cross-sectional enlargement of the cooling channel in the region of inflow and outflow, when said lower level about 3 - 5 mm, in particular 3.5 - 4 mm and more preferably about 3.8 mm below of the said higher level.
Wenngleich dies für die Kühlleistung nicht unbedingt erforderlich ist, wird aufgrund der vorangehend geschilderten Umstände bevorzugt, dass der Querschnitt des Kühlkanals im Bereich zumindest eines Zu- und/oder Abflusses gegenüber dem Rest des Kühlkanals vergrößert ist.Although this is not absolutely necessary for the cooling performance, due to the circumstances described above, it is preferred that the cross section of the cooling channel in the region of at least one inflow and / or outflow relative to the remainder of the cooling channel is increased.
Im Hinblick auf den Übergang von dem niedrigen zu dem höheren Niveau und umgekehrt wird ein allmählicher, geneigter Anstieg mit Knicken oder Stufen zwischen dem beispielsweise schrägen Anstieg und dem Bereich auf dem höheren bzw. niedrigeren Niveau vorgesehen.With respect to the transition from the lower level to the higher level and vice versa, a gradual, inclined rise is provided with kinks or steps between, for example, the inclined rise and the higher or lower level area.
Diejenigen Bereiche des Kühlkanals, die sich auf dem niedrigeren Niveau befinden, einschließlich der geneigten Übergänge zu dem höheren Niveau, können jeweils einen Winkel von etwa 50 - 70°, insbesondere etwa 60 - 65° einschließen.Those portions of the cooling channel that are at the lower level, including the inclined transitions to the higher level, may each include an angle of about 50-70 degrees, more preferably about 60-65 degrees.
Für die Querschnittsgestalt des Kühlkanals wird derzeit bevorzugt, dass diese weitgehend oval ist, wobei sich die längere Achse des Ovals weitgehend in Richtung der Rotationsachse des Kolbens erstreckt, jedoch gegenüber dieser etwas geneigt sein kann. Für diese Neigung wird derzeit ein Winkel von etwa 7° und/oder eine Neigung, die an der Oberseite nach außen gerichtet ist, bevorzugt. Durch die im Allgemeinen ovale Gestaltung kann eine effiziente Kühlung des Bereichs "zwischen" oberster Ringnut und Brennraummulde gewährleistet werden, und es können gleichzeitig die notwendigen Materialdicken eingehalten werden. Die Neigung unterstützt diesen Effekt im Hinblick auf die typische Gestalt einer Brennraummulde.For the cross-sectional shape of the cooling channel is currently preferred that this is largely oval, with the longer axis of the oval extends substantially in the direction of the axis of rotation of the piston, but may be slightly inclined relative to this. For this inclination is currently an angle of about 7 ° and / or a slope, which is directed at the top to the outside, preferred. Due to the generally oval design, an efficient cooling of the area "between" upper annular groove and combustion bowl can be ensured, and it can simultaneously necessary material thicknesses are maintained. The inclination supports this effect in view of the typical shape of a combustion bowl.
Schließlich wird derzeit ferner bevorzugt, dass sich Zu- und Abfluss diametral gegenüberliegen. Hierdurch, sowie durch eine derzeit ferner bevorzugte Symmetrie bezüglich der Rotationsachse des Kolbens kann der Kolben in einer beliebigen Orientierung eingebaut werden, und eine beliebige Öffnung kann als Zu- oder Abfluss genutzt werden.Finally, it is currently further preferred that inflow and outflow be diametrically opposed. In this way, as well as by a currently further preferred symmetry with respect to the axis of rotation of the piston, the piston can be installed in any orientation, and any opening can be used as inflow or outflow.
Nachfolgend wird ein beispielhaft in den Figuren dargestelltes Ausführungsbeispiel näher erläutert. Es zeigen:
- Fig. 1
- eine perspektivische Darstellung eines Salzkerns, der bei der Herstellung des erfindungsgemäßen Kolbens verwendet wird;
- Fig. 2
- eine geschnittene Seitenansicht eines Teils des in
Fig. 1 gezeigten Salzkerns; und - Fig. 3
- eine Schnittansicht des erfindungsgemäßen Kolbens.
- Fig. 1
- a perspective view of a salt core, which is used in the manufacture of the piston according to the invention;
- Fig. 2
- a sectional side view of part of the in
Fig. 1 shown salt core; and - Fig. 3
- a sectional view of the piston according to the invention.
In
In
In
Claims (8)
- Piston (10) for an internal combustion engine, having at least one cooling channel (24) which, solely the region of at least one inflow and at least one outflow (14), is located at a low level (12) which is comparatively distant from the piston head and moreover at a consistently higher level (16) placed closer to the piston head, characterised in that the cooling channel (24) has inclined slopes (18) between the regions placed at the low (12) and the high level (16).
- Piston (10) according to claim 1, characterised in that the cooling channel (24) is located at its higher level (16) with its lower edge essentially at the same level as a lower edge of a ring support (26).
- Piston (10) according to claim 1 or 2, characterised in that the low level is located about 3 - 5 mm, in particular about 3.5 - 4 mm and preferably about 3.8 mm below the higher level (16).
- Piston (10) according to one of the preceding claims, characterised in that the cooling channel, in the region of at least one inflow and/or outflow (14), has a cross-section which is enlarged with respect to the remaining progression of the cooling channel (24).
- Piston (10) according to one of the preceding claims, characterised in that the regions of the cooling channel (24) at the low level (12), including the inclined transitions (18), to the higher level (16) cover an angle of about 50 - 70°, in particular about 60 - 65°.
- Piston (10) according to one of the preceding claims, characterised in that the cooling channel (28) has an oval cross-section with a longer axis which runs essentially in the direction of the axis (22) of rotation of the piston (10).
- Piston (10) according to claim 6, characterised in that the axis of the cooling channel which is longer in cross-section is tilted outwards with respect to the axis (22) of rotation of the piston (10) by about 5-10°, in particular about 7°.
- Piston (10) according to one of the preceding claims, characterised in that inflow and outflow (14) are diametrally opposite.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL09765817T PL2288800T3 (en) | 2008-06-20 | 2009-06-15 | Piston for an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008002571A DE102008002571A1 (en) | 2008-06-20 | 2008-06-20 | Piston for an internal combustion engine |
PCT/EP2009/057349 WO2009153237A1 (en) | 2008-06-20 | 2009-06-15 | Piston for an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2288800A1 EP2288800A1 (en) | 2011-03-02 |
EP2288800B1 true EP2288800B1 (en) | 2012-08-08 |
Family
ID=41037617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09765817A Not-in-force EP2288800B1 (en) | 2008-06-20 | 2009-06-15 | Piston for an internal combustion engine |
Country Status (9)
Country | Link |
---|---|
US (1) | US9382869B2 (en) |
EP (1) | EP2288800B1 (en) |
JP (1) | JP2011524958A (en) |
CN (2) | CN105804882A (en) |
BR (1) | BRPI0914149A2 (en) |
DE (1) | DE102008002571A1 (en) |
ES (1) | ES2392490T3 (en) |
PL (1) | PL2288800T3 (en) |
WO (1) | WO2009153237A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011004302A1 (en) | 2011-02-17 | 2012-08-23 | Federal-Mogul Nürnberg GmbH | Method for producing a piston |
DE102011076455A1 (en) * | 2011-05-25 | 2012-11-29 | Mahle International Gmbh | Casting core for forming a cooling channel in a piston |
DE102012217939A1 (en) * | 2012-10-01 | 2014-04-03 | Mahle International Gmbh | Process for the production of cores for the casting production of workpieces |
JP2014185522A (en) * | 2013-03-21 | 2014-10-02 | Hitachi Automotive Systems Ltd | Piston of internal combustion engine |
DE102013009155A1 (en) * | 2013-05-31 | 2014-12-04 | Mahle International Gmbh | Piston for an internal combustion engine |
DE102015214512A1 (en) | 2015-07-30 | 2017-02-02 | Mahle International Gmbh | Piston for an internal combustion engine |
US20180326477A1 (en) * | 2015-11-19 | 2018-11-15 | Ks Kolbenschmidt Gmbh | Cast Inflow And Outflow Openings For Cast-Steel And Cast Iron Pistons |
KR101912764B1 (en) * | 2016-05-02 | 2018-10-29 | 동양피스톤 주식회사 | Piston for internal combustion engine and cooling channel core |
KR101934941B1 (en) * | 2016-05-02 | 2019-01-04 | 동양피스톤 주식회사 | Piston for internal combustion engine and cooling channel core |
JP7028128B2 (en) * | 2018-10-03 | 2022-03-02 | 株式会社豊田自動織機 | Internal combustion engine piston |
GB2578803B (en) * | 2019-04-04 | 2020-12-16 | Cox Powertrain Ltd | Marine outboard motor with piston cooling gallery |
US11326549B2 (en) * | 2020-01-21 | 2022-05-10 | Ford Global Technologies, Llc | 218-0266 volcano-shaped inlet of piston oil-cooling gallery |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE822922C (en) * | 1950-03-25 | 1951-11-29 | Kloeckner Humboldt Deutz Ag | Working piston for internal combustion engines |
DE1726073U (en) * | 1956-04-10 | 1956-07-12 | Mahle Kommanditgesellschaft | COMBUSTION MACHINE PISTON WITH LIQUID COOLING. |
US3190273A (en) * | 1964-01-03 | 1965-06-22 | Continental Aviat & Eng Corp | Piston for internal combustion engine |
DD99418A1 (en) | 1972-10-12 | 1973-08-13 | ||
JPS60192860A (en) * | 1984-03-14 | 1985-10-01 | Toyota Motor Corp | Piston for internal-combustion engine |
JPH05256193A (en) * | 1992-03-13 | 1993-10-05 | Mitsubishi Heavy Ind Ltd | Piston for diesel engine |
DE19548811A1 (en) * | 1995-12-27 | 1997-07-03 | Mahle Gmbh | Plunger with cooling channel |
DE19703001C2 (en) * | 1997-01-28 | 1998-12-03 | Alcan Gmbh | Liquid cooled piston |
US5979298A (en) * | 1997-05-08 | 1999-11-09 | Zellner Pistons, Llc | Cooling gallery for pistons |
DE19930630C1 (en) | 1999-07-02 | 2000-10-26 | Federal Mogul Nuernberg Gmbh | Liquid-cooled piston for I.C. engines has an annular cooling channel that runs in an undulating fashion in the direction of the piston axis |
JP4151223B2 (en) | 2001-01-29 | 2008-09-17 | いすゞ自動車株式会社 | Piston cooling structure |
DE10126493B4 (en) * | 2001-05-31 | 2006-05-11 | Ks Kolbenschmidt Gmbh | Piston with inclined to the main axes cooling channel |
DE60203122T2 (en) * | 2001-07-30 | 2005-11-03 | Roberto Oscar Appo | METHOD OF ASSEMBLING A METAL RING THAT IS MOUNTED TO A BEARING BOND AND THUS SOLVED TO FORM THE RING-TYPE COOLING PIPE OF A COMBUSTION ENGINE PISTON, AND METHOD FOR PRODUCING THE RIBBED METAL RING |
DE10221561A1 (en) * | 2002-05-15 | 2004-01-08 | Mahle Gmbh | Cooled piston for an internal combustion engine |
DE10319230A1 (en) * | 2003-04-28 | 2004-11-18 | Ks Kolbenschmidt Gmbh | Piston for internal combustion engine has radially encompassing cooling passage formed in piston crown with rising and falling sections in such way that cooling medium is accelerated from inlet in direction of outlet of passage |
DE10340291A1 (en) * | 2003-09-02 | 2005-04-14 | Mahle Gmbh | Piston for an internal combustion engine |
DE10352244A1 (en) * | 2003-11-08 | 2005-06-09 | Mahle Gmbh | Method for producing a piston for an internal combustion engine |
DE102004043720A1 (en) * | 2004-09-09 | 2006-03-30 | Federal-Mogul Nürnberg GmbH | Piston for an internal combustion engine and internal combustion engine |
JP4276602B2 (en) * | 2004-09-21 | 2009-06-10 | 株式会社豊田自動織機 | Piston for internal combustion engine |
JP4383992B2 (en) | 2004-09-21 | 2009-12-16 | 株式会社豊田自動織機 | Piston for internal combustion engine |
DE102004057558A1 (en) * | 2004-11-30 | 2006-06-01 | Mahle International Gmbh | Piston for internal combustion engine has base component consisting of forged aluminum and ring element of ni-resist, with closed annular cooling passage located between base component and ring element |
DE102005061075A1 (en) * | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Piston for internal combustion engine has hub cooling channels arranged in bolt hub regions close to bottom of piston and each connected to cooling channel |
DE102005061059A1 (en) * | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Piston for internal combustion engine has piston head side regions of gudgeon-pin hub reinforced radially inward, and oil outflow borings directed to these regions |
DE102005061074A1 (en) * | 2005-12-21 | 2007-06-28 | Mahle International Gmbh | Piston for combustion engine e.g. diesel engine, has radially outward oriented wall zone of cooling channel formed by ring carrier |
DE102007044105A1 (en) * | 2007-04-27 | 2008-10-30 | Mahle International Gmbh | Casting core for forming a cooling channel in a piston produced by casting |
DE102008020231A1 (en) * | 2008-04-22 | 2009-10-29 | Mahle International Gmbh | Casting core for forming a cooling channel |
DE102008031864A1 (en) * | 2008-07-05 | 2010-01-07 | Mahle International Gmbh | Insert for piston of internal combustion engine i.e. diesel engine, has supporting and cavity base parts that are arranged radially at distance from each other and connected with one another by covers, such that cooling channel is formed |
-
2008
- 2008-06-20 DE DE102008002571A patent/DE102008002571A1/en not_active Withdrawn
-
2009
- 2009-06-15 EP EP09765817A patent/EP2288800B1/en not_active Not-in-force
- 2009-06-15 BR BRPI0914149A patent/BRPI0914149A2/en not_active Application Discontinuation
- 2009-06-15 JP JP2011514009A patent/JP2011524958A/en active Pending
- 2009-06-15 PL PL09765817T patent/PL2288800T3/en unknown
- 2009-06-15 WO PCT/EP2009/057349 patent/WO2009153237A1/en active Application Filing
- 2009-06-15 CN CN201610124828.7A patent/CN105804882A/en active Pending
- 2009-06-15 ES ES09765817T patent/ES2392490T3/en active Active
- 2009-06-15 US US13/000,219 patent/US9382869B2/en active Active
- 2009-06-15 CN CN200980119274XA patent/CN102046953A/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2009153237A1 (en) | 2009-12-23 |
EP2288800A1 (en) | 2011-03-02 |
US9382869B2 (en) | 2016-07-05 |
US20110180025A1 (en) | 2011-07-28 |
PL2288800T3 (en) | 2012-12-31 |
CN102046953A (en) | 2011-05-04 |
CN105804882A (en) | 2016-07-27 |
BRPI0914149A2 (en) | 2015-10-20 |
JP2011524958A (en) | 2011-09-08 |
ES2392490T3 (en) | 2012-12-11 |
DE102008002571A1 (en) | 2009-12-31 |
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