DE2038022A1 - Pistons for internal combustion engines - Google Patents
Pistons for internal combustion enginesInfo
- Publication number
- DE2038022A1 DE2038022A1 DE19702038022 DE2038022A DE2038022A1 DE 2038022 A1 DE2038022 A1 DE 2038022A1 DE 19702038022 DE19702038022 DE 19702038022 DE 2038022 A DE2038022 A DE 2038022A DE 2038022 A1 DE2038022 A1 DE 2038022A1
- Authority
- DE
- Germany
- Prior art keywords
- internal combustion
- combustion engines
- pistons
- electron beam
- piston
- 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.)
- Pending
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
- F02F3/20—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
-
- 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
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Description
Joachim Arendt, 3001 Krähenwinkel, Briedensallee 5 D ist als Erfinder genannt worden (es wird gebieten, den Erfinder grundsätzlich in keiner Auslegung oder Patentschrift zu nennen).Joachim Arendt, 3001 Krähenwinkel, Briedensallee 5 D is the inventor has been named (the inventor is generally not required in any interpretation or patent specification).
Anmelderin und Inhaberin ist Rosemarie Arendt, 3001 Krähenwinkel, Briedensallee 5 D.The applicant and owner is Rosemarie Arendt, 3001 Krähenwinkel, Briedensallee 5 D.
Kolben für Verbrennungsmaschinen Die Erfindung betrifft einen Kolben für Verbrennungskraftmaschinen, der aus 2 oder mehreren Teilstücken bestehen soll. Pistons for internal combustion engines The invention relates to a piston for internal combustion engines, which should consist of 2 or more parts.
Des weiteren sollen die verschiedenen Teilstücke auch aus verschiedenen Metallen bestehen können.Furthermore, the different parts should also consist of different Metals can exist.
Die Erfindung soll sich besonders darauf konzentrieren, die optimale Zusammenfügung durch das Elektronenstrahlschweißverfahren zu erzielen.The invention is to concentrate particularly on the optimal To achieve assembly by the electron beam welding process.
Es ist bekannt, daB insbesondere hochaufgeladene Dieselmotoren, aber auch andere stark belastete Verbrennungsmotoren,Kolbenschwierigkeiten dadurch zu erleiden haben,daß die Kolbenböden überhitzt werden, was zu Wärmerissen, Ringstecken, Verkokung des Öls etc. führt.It is known that, in particular, highly charged diesel engines, but also other heavily loaded internal combustion engines, piston difficulties as a result suffered that the piston crowns are overheated, which leads to heat cracks, ring sticking, Coking of the oil etc. leads.
an kennt viele Verbindungskonstruktionen, bei denen der Kolben boden mit dem Hauptkörper verschraubt wird. Der Herstellungsvorag ist jedoch durch Kostenaufwand belastet und ist außerdem deshalb nicht ideal, weil die Verscaraubungen dazu neigen, die zu verbindenden Körper zu verspannen. Man hat deshalb versucht, Kolbenteile miteinander zu vergießen und zu verschweißen.an knows many connection designs in which the piston crown is screwed to the main body. However, the manufacturing process is by cost burdened and is also not ideal because the carvings tend to to brace the bodies to be connected. Attempts have therefore been made to make piston parts to be potted and welded together.
Es treten hier viele Schwierigkeiten auf. Selbst beim Verschweißen mittels Elektronenstrahlen und gleichen Metallen ist die Schwierigkeit, sogenannte "Schweißtröpfchen" in den Kühlkanälen zu vermeiden, nicht ..it Erfolg gebannt. Ebenfalls besteht die Schwierigkeit, die Schweißnähte auf Riß ans ätze zu überprüfen und Spannungsspitzen zu vermeiden.There are many difficulties here. Even when welding using electron beams and like metals the difficulty is called Avoiding "sweat droplets" in the cooling ducts does not ... with success. Likewise there is the difficulty of checking the weld seams for cracks and voltage peaks to avoid.
Die Erfindung hat sich deshalb zum Ziel gesetzt, diese Nachteile -dadurch zu vermeiden, daß eine Konstruktion nach beiliegender Zeichnung vorgeschlagen wird. Hier verbindet der lektronenstrahl kontrollierbar das Colbenober- und -unterteil, ohne während des Schweißens Räume zu berühren, die später von der Kühlflüssigkeit benutzt werden.The invention has therefore set itself the goal of eliminating these disadvantages to avoid proposing a construction according to the accompanying drawing. Here the electron beam connects the upper and lower part of the piston in a controllable manner, without touching spaces during welding that will later be used by the coolant to be used.
Da es ein anstrebbares Ziel ist, die Vorteile eines Beichtmetallunterteils mit einem Fe-Oberteil zu verbinden, wird vorgeschlagen, diese Verbindung mittels einer Zwischenlage zu erreichen.As it is a goal that can be pursued, the advantages of a beech metal base to connect with an Fe upper part, it is proposed to use this connection to achieve an intermediate layer.
Die Verschweißung zwischen Aluminium und Be ist bisher auch noch nicht mittels des Elektronenstrahls erfolgreich gelöst. Die einzig bisher technologisch erfolgreiche Verbindung zwischen Al und Fe ist mit der Plattierungstechnik z. B. im Lagerschalen bau erfolgreich gewesen.The welding between aluminum and Be has not yet been done either successfully solved by means of the electron beam. The only one so far technologically successful connection between Al and Fe is possible with the plating technique e.g. B. has been successful in bearing shell construction.
Es wird deshalb vorgeschlagen, Fe- und Al-Teile mittels 2-maliger Elektronenstrahlschweißung und eines plattierten Al-F e - Zwischenstückes zu vollziehen, wobei das Elektronenstrahlschweißen nur noch zwischen Al/Al und Fe/Fe als gelöst betrachtet werden kann. It is therefore proposed to use Fe and Al parts twice To carry out electron beam welding and a clad Al-F e intermediate piece, where the electron beam welding only between Al / Al and Fe / Fe as solved can be viewed.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702038022 DE2038022A1 (en) | 1970-07-31 | 1970-07-31 | Pistons for internal combustion engines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19702038022 DE2038022A1 (en) | 1970-07-31 | 1970-07-31 | Pistons for internal combustion engines |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2038022A1 true DE2038022A1 (en) | 1972-02-03 |
Family
ID=5778459
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19702038022 Pending DE2038022A1 (en) | 1970-07-31 | 1970-07-31 | Pistons for internal combustion engines |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2038022A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0019323A1 (en) * | 1979-05-16 | 1980-11-26 | Karl Schmidt Gmbh | Piston for internal-combustion engines |
EP0064831A2 (en) * | 1981-05-07 | 1982-11-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston crown for an internal combustion engine |
FR2668090A1 (en) * | 1990-10-18 | 1992-04-24 | Metal Leve Sa | Method for the manufacture of a piston in two parts, and the said piston |
US5309818A (en) * | 1990-10-18 | 1994-05-10 | Metal Leve S/A Industria E. Comercio | Method for the manufacture of a cooled piston |
FR2901577A3 (en) * | 2006-05-29 | 2007-11-30 | Renault Sas | Internal combustion engine`s piston, has transverse wall with internal cavity containing refrigerant fluid, and including annular part that extends skirt continuously on assembly of its circumference, in plan normal to translation axis |
DE102008055911A1 (en) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
-
1970
- 1970-07-31 DE DE19702038022 patent/DE2038022A1/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0019323A1 (en) * | 1979-05-16 | 1980-11-26 | Karl Schmidt Gmbh | Piston for internal-combustion engines |
EP0064831A2 (en) * | 1981-05-07 | 1982-11-17 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston crown for an internal combustion engine |
EP0064831A3 (en) * | 1981-05-07 | 1983-06-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Piston crown for an internal combustion engine |
FR2668090A1 (en) * | 1990-10-18 | 1992-04-24 | Metal Leve Sa | Method for the manufacture of a piston in two parts, and the said piston |
US5309818A (en) * | 1990-10-18 | 1994-05-10 | Metal Leve S/A Industria E. Comercio | Method for the manufacture of a cooled piston |
US5394788A (en) * | 1990-10-18 | 1995-03-07 | Metal Leve S/A Industria E Comercio | Head for articulated piston |
FR2901577A3 (en) * | 2006-05-29 | 2007-11-30 | Renault Sas | Internal combustion engine`s piston, has transverse wall with internal cavity containing refrigerant fluid, and including annular part that extends skirt continuously on assembly of its circumference, in plan normal to translation axis |
DE102008055911A1 (en) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Multi-part piston for an internal combustion engine and method for its production |
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