EP2162612B1 - Zweiteiliger kolben für einen verbrennungsmotor - Google Patents

Zweiteiliger kolben für einen verbrennungsmotor Download PDF

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Publication number
EP2162612B1
EP2162612B1 EP08758195.5A EP08758195A EP2162612B1 EP 2162612 B1 EP2162612 B1 EP 2162612B1 EP 08758195 A EP08758195 A EP 08758195A EP 2162612 B1 EP2162612 B1 EP 2162612B1
Authority
EP
European Patent Office
Prior art keywords
piston
shaft
cooling channel
piston head
channel cover
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
Application number
EP08758195.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2162612A1 (de
Inventor
Rainer Scharp
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.)
Mahle International GmbH
Original Assignee
Mahle International 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.)
Filing date
Publication date
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2162612A1 publication Critical patent/EP2162612A1/de
Application granted granted Critical
Publication of EP2162612B1 publication Critical patent/EP2162612B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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 
    • 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 two-part piston for an internal combustion engine consisting of an upper part and a lower part, with a piston crown formed by the upper part and a radially outwardly formed on the piston crown ring portion, with two lower part formed, opposite shaft elements and two opposing pin bosses that connect the shaft elements together.
  • a two-piece piston for an internal combustion engine which consists of an upper part and a lower part.
  • the piston has radially outside and close to the piston head to a circumferential cooling channel, the piston crown side of the upper part and the shaft side is closed by a cooling channel cover, which is part of the lower part.
  • a cooling channel cover which is part of the lower part.
  • two mutually opposite shaft elements are integrally formed on the cooling channel cover, which are connected to each other via two mutually opposite pin bosses, wherein the pin bosses are integrally formed via a respective hub connection to the cooling channel cover.
  • German patent application DE 10 2004 057 624 A1 is a two-part, made entirely of steel, screwed piston known which has a piston near the bottom and radially outer, annular cooling channel, which is closed in a complex manner by a separate cover plate.
  • the object of the present invention is to reduce the weight of two-piece pistons, in particular those produced for commercial vehicles, without reducing their strength.
  • FIG. 1 shows a sectional view of a consisting of an upper part and a lower part, two-part cooling channel piston with recesses between the lower cooling channel cover and the upper portion of the shaft elements and in the hub connections.
  • the piston 1 shown in section in the figure consists of an upper part 2 and a lower part 3.
  • the upper part 2 forms the piston head 4, in which a combustion bowl 5 is formed.
  • Radially outward, the piston 1 near the piston head 4 has a circumferential ring portion 6 with grooves 7, 7 ', 8 for receiving in the figure unillustrated piston rings, wherein the grooves 7, 7' are formed in the upper part 2 of the piston 1.
  • the piston head side limits the upper part 2 a closed, radially outer circumferential cooling channel 9, which is closed on the piston bottom side facing away from a cooling channel cover 10, which is part of the lower part 3, and an opening 11 for introducing cooling oil into the cooling channel 9 and another, In the figure, not shown opening for discharging cooling oil from the cooling channel 9 has.
  • an upwardly directed collar 25 is formed for receiving a ⁇ labstreifringes not shown in the figure.
  • the lower part 3 further comprises two mutually opposite shaft elements 12, 13, of which the right half section of the sectional image, which is parallel to the pressure-counterpressure direction of the piston 1, which shows a shaft member 12 in section, and of which the left half section of the sectional image, which is perpendicular to the sectional plane of the right half section, the other shaft member 13 shows in plan view.
  • the shaft elements 12, 13 are connected via a respective shaft connection 14, 15 with the lower cooling channel cover 10.
  • the shaft elements 12, 13 are connected to one another via two pin bosses 16, 17, which are opposite one another and are each integrally formed on the cooling channel cover 10 via a respective hub connection 18, 19.
  • the shaft connections 14, 15 pass seamlessly into the hub connections 18, 19.
  • the piston 1 has a recess 20
  • the piston bottom side of the cooling channel cover 10 and the shaft side of the shank connections 14, 15 is limited
  • the undersides of the shank connections 14, 15 with the tops of the shaft elements 12, 13 and the upper sides of the shaft connections 14, 15 are connected to the radially inner region of the cooling channel cover 10.
  • the shaft connections 14, 15 in the region of the shaft elements 12, 13 are at least approximately frusto-conical and form in this area with the piston axis 23 an angle ⁇ of approximately 45 °.
  • the maximum axial dimension h of the recesses 20 between the upper side of the shaft elements 12, 13 and the underside of the ring section 6 corresponds approximately to the dimension between the underside of the ring section 6 and the surface of the piston crown 4.
  • the upper part 2 and the lower part 3 of the piston 1 can be made of cast iron, steel or light metal, such as aluminum or magnesium. It is advantageous, the combustion gases directly exposed shell 2 made of steel and the lower part 3 for the purpose of weight savings To produce aluminum.
  • the upper part 2 and the lower part 3 can be connected via the annular contact regions 21 and 22 by means of a welding process, such as the friction welding process, or by means of the brazing process. It is also possible to screw the upper part 2 with the lower part 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP08758195.5A 2007-06-13 2008-06-12 Zweiteiliger kolben für einen verbrennungsmotor Not-in-force EP2162612B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007027162A DE102007027162A1 (de) 2007-06-13 2007-06-13 Zweiteiliger Kolben für einen Verbrennungsmotor
PCT/DE2008/001014 WO2008151620A1 (de) 2007-06-13 2008-06-12 Zweiteiliger kolben für einen verbrennungsmotor

Publications (2)

Publication Number Publication Date
EP2162612A1 EP2162612A1 (de) 2010-03-17
EP2162612B1 true EP2162612B1 (de) 2018-08-08

Family

ID=39800530

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08758195.5A Not-in-force EP2162612B1 (de) 2007-06-13 2008-06-12 Zweiteiliger kolben für einen verbrennungsmotor

Country Status (7)

Country Link
US (1) US7762178B2 (ja)
EP (1) EP2162612B1 (ja)
JP (1) JP2010529357A (ja)
KR (1) KR20100021599A (ja)
CN (1) CN101680394A (ja)
DE (1) DE102007027162A1 (ja)
WO (1) WO2008151620A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008045456A1 (de) * 2008-09-02 2010-03-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102008062219A1 (de) * 2008-12-13 2010-06-17 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102009032941A1 (de) * 2009-07-14 2011-01-20 Mahle International Gmbh Mehrteiliger Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
US8807109B2 (en) * 2009-11-06 2014-08-19 Federal-Mogul Corporation Steel piston with cooling gallery and method of construction thereof
US20110185889A1 (en) * 2010-02-03 2011-08-04 Florin Muscas Piston with central cooling gallery cooling feature
DE102010033882A1 (de) * 2010-08-10 2012-02-16 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102011013139A1 (de) * 2011-03-04 2012-09-06 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US8347843B1 (en) 2011-03-25 2013-01-08 Batiz-Vergara Jose A Piston for internal combustion engine
US10753310B2 (en) 2012-02-10 2020-08-25 Tenneco Inc. Piston with enhanced cooling gallery
DE102012014194A1 (de) * 2012-07-18 2014-01-23 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens
CN104884779A (zh) * 2012-11-02 2015-09-02 费德罗-莫格尔公司 具有局部填充含导热金属组合物的冷却通道的活塞
US20150337959A1 (en) * 2014-05-23 2015-11-26 Federal-Mogul Corporation Piston with keystone second ring groove for high temperature internal combustion engines
DE102016221352A1 (de) * 2016-10-28 2018-05-03 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens
DE102016221353A1 (de) * 2016-10-28 2018-05-03 Mahle International Gmbh Brennkraftmaschine
DE102018203226A1 (de) * 2018-03-05 2019-09-05 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7946216B2 (en) * 2004-12-08 2011-05-24 Mahle International Gmbh Two-part piston for an internal combustion engine

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19846152A1 (de) 1998-10-07 2000-04-13 Mahle Gmbh Kolben mit Kolbengrundkörper aus geschmiedetem Stahl und einem Kühlkanal
US6327962B1 (en) * 1999-08-16 2001-12-11 Caterpillar Inc. One piece piston with supporting piston skirt
JP2003025076A (ja) * 2001-07-09 2003-01-28 Riken Tanzou Kk 内燃機関のピストン製造方法
US6539910B1 (en) * 2001-09-19 2003-04-01 Federal-Mogul World Wide, Inc. Closed gallery piston having con rod lubrication
US6557514B1 (en) 2001-10-23 2003-05-06 Federal-Mogul World Wide, Inc. Closed gallery monobloc piston having oil drainage groove
DE10244512A1 (de) 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE10325914B4 (de) 2003-06-07 2012-08-02 Mahle Gmbh Kolben für einen Verbrennungsmotor
DE10326456A1 (de) * 2003-06-12 2004-12-30 Mahle Gmbh Kolben für einen Verbrennungsmotor
DE10346822A1 (de) * 2003-10-06 2005-04-21 Mahle Gmbh Kolben für einen Verbrennungsmotor
DE10346819A1 (de) * 2003-10-06 2005-04-21 Mahle Gmbh Einteiliger Kolben für einen Verbrennungsmotor
DE102004057624A1 (de) 2004-11-30 2006-06-01 Mahle International Gmbh Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor
DE102005044597A1 (de) 2005-09-17 2007-03-29 Mahle International Gmbh Kolben für einen Verbrennungsmotor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7946216B2 (en) * 2004-12-08 2011-05-24 Mahle International Gmbh Two-part piston for an internal combustion engine

Also Published As

Publication number Publication date
US7762178B2 (en) 2010-07-27
JP2010529357A (ja) 2010-08-26
DE102007027162A1 (de) 2008-12-18
KR20100021599A (ko) 2010-02-25
EP2162612A1 (de) 2010-03-17
US20080307958A1 (en) 2008-12-18
WO2008151620A1 (de) 2008-12-18
CN101680394A (zh) 2010-03-24

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