EP1180592A2 - Stahlkolben - Google Patents
Stahlkolben Download PDFInfo
- Publication number
- EP1180592A2 EP1180592A2 EP01117240A EP01117240A EP1180592A2 EP 1180592 A2 EP1180592 A2 EP 1180592A2 EP 01117240 A EP01117240 A EP 01117240A EP 01117240 A EP01117240 A EP 01117240A EP 1180592 A2 EP1180592 A2 EP 1180592A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- gap
- ring section
- base part
- section
- 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
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
- F02F3/0015—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
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/04—Heavy metals
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0448—Steel
Definitions
- the invention relates to a piston for an internal combustion engine according to the features of The preamble of claim 1.
- a piston for an internal combustion engine is known from EP 0 804 680 B1, in which a Ring section or a lower part of the ring section via a welding or soldering process is connected to the piston crown or an upper part of the ring section.
- the Ring section and the piston crown (base part) creates a circumferential, downward free Space that is closed by a component so that a cooling channel is created.
- a piston is also known from DE 36 43 039 A1 or DE 198 46 152 A1 which a ring section is welded to a base part of the piston.
- This piston points several bores directed into the cooling channel, through which the cooling channel connects with a Cooling medium, especially engine oil, is supplied.
- This cooling medium is used with appropriate Agents injected into the interior of the piston and the cooling channel through the holes fed. The drainage also takes place through these holes.
- the purpose of the cooling channel is that through the cooling medium flowing through the cooling channel, especially engine oil, the piston crown area is cooled to protect it from damage to protect due to high combustion chamber temperatures.
- the cooling channel it is necessary to provide the cooling channel with an opening through which the cooling medium can flow into the cooling channel. So make the DE 36 43 039 A1 or DE 198 46 152 A1 between the cooling channel and the interior of the piston Holes represent an additional manufacturing step. At the same time, these holes are located at a point in the piston that weakens the strength of the piston.
- the invention is therefore based on the object of a piston for an internal combustion engine to simplify its manufacture without reducing the stability.
- the cooling medium can exit the cooling channel through this opening (this gap) be removed so that in addition to the opening for the supply of the cooling medium to additional Bores in the piston can be omitted.
- the cooling medium is supplied advantageously at least one opening, which is also provided in the ring section is. This means that all openings, regardless of their geometric shape, are in one area arranged of the piston, through which the strength of the piston is not impaired. The Arrangement of an opening in the base part can thus be avoided.
- the gap is created by the attachment and the shape of the Ring section with respect to the base part. This means that the ring section and the Corresponding areas of the base part are matched to one another in such a way that Attachment of the ring section the gap is created by itself. Work steps for introduction the gap is thus completely eliminated.
- the further opening in particular the Gap, introduced after the attachment of the ring section to the base part. That means, that the shape of the ring section and the corresponding shape of the base part so are coordinated with one another that after the ring section has been fitted, the cooling channel is largely or completely closed.
- the at least one further opening (of the gap) can be multiple holes or circumferential gaps. hereby a further step is required, but this is therefore accepted can be because the opening in order to supply the cooling medium in one area of the piston is arranged, through which the piston crown area is not weakened.
- the ring section is attached by means of a welding process attachable to the base part. This can be done in a simple and known manner Ring section are attached to the base part after its manufacture. Base part and For example, ring sections can both be produced using the casting process.
- the piston is preferably made of steel.
- a weld joint is arranged in alignment with the gap. This has the advantage that the joint and the gap area of the base part before attachment of the ring section can be processed with the same dimension.
- FIG. 1 shows sections of the base area of a piston for an internal combustion engine. It is a pendulum-shaft piston. The rest of the piston design it does not matter, for the sake of completeness the construction of a piston on the Figure 1 together with the associated description of EP 0 804 680 B1 and Figure 1 together with the associated Description of DE 198 46 152 A1 is referred.
- the piston shown in FIG. 1 has a base part 1, a combustion chamber trough 2 being present in the base region.
- a prefabricated ring section 3, which later carries the piston rings, is attached to the base part by means of a welding process in the area of a weld joint 4.
- the ring section 3 has a web 5 which is directed in the direction of the base part 1, but does not come into contact with it, so that the web 5 and the corresponding region of the base part 1 form a gap 6.
- Cooling medium such as engine oil, can be fed via this gap 6 to a cooling channel 7, which is likewise formed by the shape of the base part 1 and the ring section 3.
- the gap 6 is shown larger in the figures for the purpose of clarifying the geometric configuration than in reality.
- the gap 6, that is to say the gap dimension, or else the size of the one or more openings, is to be selected so that an optimal volume flow into the cooling channel 7 and in particular through the gap 6 is given. Because it is desirable that the cooling medium remains in the cooling channel 7 for a sufficiently long time to absorb the heat and be removed again in good time.
- the ring section 3 can be pushed into its end position from below, that is to say over the piston skirt, since the inner diameter of the ring section 3 in the region of the web 5 does not allow the ring section 3 to be pushed over the bottom region. This is possible with pendulum-shaft pistons because the diameter in the area of the piston skirt is smaller than the inner diameter in the area of the web 5.
- Figure 2 shows a similar construction of a piston as in Figure 1, but with the difference that both the base part 1 and the ring portion 3 each have mutually facing projections 8 and 9, which form the gap 6.
- the projections 8 and 9 can be of the same or different lengths.
- the weld joint 4 and the gap 6 are in alignment, so that this simplifies the processing of the components involved.
- a structure shown in Figure 2 can be realized both with pendulum-shaft and monoblock pistons, since the inside diameter in the area of the projection 9 (after the final assembly of the ring section 3 on the base part 1) is in any case the same or larger than the diameter of the bottom area without the ring section 3.
- the ring section has at least one opening, via which the cooling medium in the internal combustion engine by means of suitable means in the cooling channel is injected. This opening and the means are definitely there.
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
- Figur 1:
- einen Kolben, bei dem ein Ringabschnitt einen Steg aufweist und
- Figur 2:
- einen Kolben, bei dem sowohl der Ringabschnitt als auch das Basisteil einen Vorsprung aufweisen.
Der Ringabschnitt 3 kann von unten, also über den Kolbenschaft, in seine Endposition geschoben werden, da der Innendurchmesser des Ringabschnittes 3 im Bereich des Steges 5 es nicht gestattet, den Ringabschnitt 3 über den Bodenbereich zu schieben. Dies ist bei Pendelschaftkolben möglich, da der Durchmesser im Bereich des Kolbenschaftes kleiner ist als der Innendurchmesser im Bereich des Steges 5.
Ein in Figur 2 gezeigter Aufbau ist realisierbar sowohl bei Pendelschaft- als auch bei Monoblockkolben, da der Innendurchmesser im Bereich des Vorsprunges 9 (nach der Endmontages des Ringabschnittes 3 auf dem Basisteil 1) auf jeden Fall gleich oder größer ist als der Durchmesser des Bodenbereiches ohne den Ringabschnitt 3. Bei Betrachtung der Figur 2 bedeutet dies, daß, wenn eine senkrechte Linie durch die Schweißfuge 4 gezogen wird, die Stirnseite des Vorsprunges 8 maximal von rechts und die Stirnseite des Vorsprunges 9 maximal von links, unter Bildung des Spaltes 6, an die senkrechte Linie heranreicht. Dies entspricht insbesondere den geometrischen Verhältnissen bei Monoblockkolben, da bei dieser Bauart der Ringabschnitt 3 nur, bei Betrachtung der Figur 2, von oben über den Kolbenbodenbereich aufgeschoben werden kann, wobei die Stirnseite des Vorsprunges 9 nicht nach rechts die senkrechte Linie überschreiten darf. Hingegen kann die Stirnseite des Vorsprunges 9 sowohl bei Pendelschaftkolben als auch bei Monoblockkolben die senkrechte Linie nach links überschreiten.
Claims (7)
- Kolben für eine Brennkraftmaschine, wobei der Kolben zumindest aus einem Basisteil (1) und einem daran angebrachten Ringabschnitt (3) besteht und das Basisteil (1) mit dem Ringabschnitt (3) einen Kühlkanal (7) bildet, wobei dem Kühlkanal (7) über eine Öffnung ein Kühlmedium zuführbar ist, dadurch gekennzeichnet, daß nach der Endbearbeitung des Kolbens zwischen dem Basisteil (1) und dem Ringabschnitt (3) zumindest eine weitere Öffnung, insbesondere ein umlaufender Spalt (6), vorhanden ist.
- Kolben nach Anspruch 1, dadurch gekennzeichnet, daß der Spalt (6) durch die Anbringung und die Form des Ringabschnittes (3) in Bezug auf das Basisteil (1) entsteht.
- Kolben nach Anspruch 1, dadurch gekennzeichnet, daß die weitere Öffnung, insbesondere der Spalt (6), nach der Anbringung des Ringabschnittes (3) an dem Basisteil (1) eingebracht wird.
- Kolben nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß der Ringabschnitt (3) mittels eines Schweißverfahrens an dem Bauteil (1) anbringbar ist.
- Kolben nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß eine Schweißfuge (4) in einer Flucht mit dem Spalt (6) angeordnet ist.
- Kolben nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß zumindest an dem Ringabschnitt (3) ein in Richtung des Basisteiles (1) ausgerichteter Vorsprung (5) angeordnet ist, der zusammen mit der Wandung des Basisteiles (1) die weitere Öffnung, insbesondere den Spalt (6), bildet.
- Kolben nach Anspruch 6, dadurch gekennzeichnet, daß das Basisteil (1) einen den Spalt (6) zusammen mit dem Vorsprung (5) bildenden Vorsprung (8) aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10040486 | 2000-08-18 | ||
DE2000140486 DE10040486C2 (de) | 2000-08-18 | 2000-08-18 | Stahlkolben |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1180592A2 true EP1180592A2 (de) | 2002-02-20 |
EP1180592A3 EP1180592A3 (de) | 2002-09-11 |
EP1180592B1 EP1180592B1 (de) | 2006-03-15 |
Family
ID=7652919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20010117240 Expired - Lifetime EP1180592B1 (de) | 2000-08-18 | 2001-07-17 | Stahlkolben |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1180592B1 (de) |
DE (2) | DE10040486C2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012083929A3 (de) * | 2010-12-24 | 2012-10-04 | Mahle International Gmbh | Kolben für einen verbrennungsmotor |
WO2016001379A1 (de) * | 2014-07-02 | 2016-01-07 | Ks Kolbenschmidt Gmbh | Spaltgeometrie bei einem stoffschlüssig gefügten kühlkanalkolben |
US11162453B2 (en) | 2016-05-04 | 2021-11-02 | Ks Kolbenschmidt Gmbh | Piston |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009041392A1 (de) | 2009-09-12 | 2011-05-26 | Daimler Ag | Kolben für eine Verbrennungskraftmaschine |
DE102010056220A1 (de) | 2010-12-24 | 2012-06-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102012014193A1 (de) * | 2012-07-18 | 2014-05-15 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102013009164A1 (de) * | 2013-05-31 | 2014-12-04 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102013009161A1 (de) | 2013-05-31 | 2014-12-18 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3643039A1 (de) * | 1986-12-17 | 1988-06-30 | Mahle Gmbh | Kuehlbarer tauchkolben fuer verbrennungsmotoren |
EP0804680B1 (de) * | 1995-01-19 | 2000-04-12 | KS Kolbenschmidt GmbH | Geschmiedeter oder gegossener kolbenkopf eines mehrteiligen kolbens |
DE19846152A1 (de) * | 1998-10-07 | 2000-04-13 | Mahle Gmbh | Kolben mit Kolbengrundkörper aus geschmiedetem Stahl und einem Kühlkanal |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD123962A1 (de) * | 1975-12-24 | 1977-01-26 |
-
2000
- 2000-08-18 DE DE2000140486 patent/DE10040486C2/de not_active Revoked
-
2001
- 2001-07-17 DE DE50109197T patent/DE50109197D1/de not_active Expired - Lifetime
- 2001-07-17 EP EP20010117240 patent/EP1180592B1/de not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3643039A1 (de) * | 1986-12-17 | 1988-06-30 | Mahle Gmbh | Kuehlbarer tauchkolben fuer verbrennungsmotoren |
EP0804680B1 (de) * | 1995-01-19 | 2000-04-12 | KS Kolbenschmidt GmbH | Geschmiedeter oder gegossener kolbenkopf eines mehrteiligen kolbens |
DE19846152A1 (de) * | 1998-10-07 | 2000-04-13 | Mahle Gmbh | Kolben mit Kolbengrundkörper aus geschmiedetem Stahl und einem Kühlkanal |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012083929A3 (de) * | 2010-12-24 | 2012-10-04 | Mahle International Gmbh | Kolben für einen verbrennungsmotor |
WO2016001379A1 (de) * | 2014-07-02 | 2016-01-07 | Ks Kolbenschmidt Gmbh | Spaltgeometrie bei einem stoffschlüssig gefügten kühlkanalkolben |
CN106662035A (zh) * | 2014-07-02 | 2017-05-10 | Ks科尔本施密特有限公司 | 在材料锁合地接合的冷却通道活塞中的间隙几何结构 |
US10337450B2 (en) | 2014-07-02 | 2019-07-02 | Ks Kolbenschmidt Gmbh | Gap geometry in a cohesively joined cooling-channel piston |
CN106662035B (zh) * | 2014-07-02 | 2019-07-23 | Ks科尔本施密特有限公司 | 在材料锁合地接合的冷却通道活塞中的间隙几何结构 |
US11162453B2 (en) | 2016-05-04 | 2021-11-02 | Ks Kolbenschmidt Gmbh | Piston |
Also Published As
Publication number | Publication date |
---|---|
DE10040486A1 (de) | 2002-03-07 |
DE50109197D1 (de) | 2006-05-11 |
DE10040486C2 (de) | 2002-10-31 |
EP1180592A3 (de) | 2002-09-11 |
EP1180592B1 (de) | 2006-03-15 |
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