EP1664515A1 - Piston pour un moteur a combustion interne - Google Patents

Piston pour un moteur a combustion interne

Info

Publication number
EP1664515A1
EP1664515A1 EP04786700A EP04786700A EP1664515A1 EP 1664515 A1 EP1664515 A1 EP 1664515A1 EP 04786700 A EP04786700 A EP 04786700A EP 04786700 A EP04786700 A EP 04786700A EP 1664515 A1 EP1664515 A1 EP 1664515A1
Authority
EP
European Patent Office
Prior art keywords
piston
ring
base body
ring element
combustion engine
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
Application number
EP04786700A
Other languages
German (de)
English (en)
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 GmbH
Original Assignee
Mahle 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 GmbH filed Critical Mahle GmbH
Publication of EP1664515A1 publication Critical patent/EP1664515A1/fr
Pending legal-status Critical Current

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 
    • 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
    • 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
    • F02F3/0023—Multi-part pistons the parts being bolted or screwed together
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/005—Pistons; Trunk pistons; Plungers obtained by assembling several pieces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids

Definitions

  • the invention relates to a piston for an internal combustion engine according to the preamble of the claim.
  • a piston for an internal combustion engine with a base body made of aluminum and an annular element arranged in the radially outer edge region of the piston head and which forms an annular cooling channel with the base body is known from US Pat. No. 2,772,933.
  • the ring element consists of an iron alloy, which has the disadvantage that the ring element makes a significant contribution to increasing the piston weight.
  • the object of the invention is to avoid this disadvantage.
  • the task is solved with the characteristics of the main claim.
  • a useful embodiment of the invention is the subject of the dependent claim.
  • the ring element made of aluminum according to the invention with a ring carrier made of NiResist for a compression ring combines the advantage of reducing the piston weight with the advantage of offering a wear-resistant bearing for the compression ring and thus increasing the load capacity and the service life of the piston.
  • FIG. 1 shows a piston for an internal combustion engine with an aluminum ring element according to the invention in a sectional view consisting of two halves, which shows two longitudinal sections of the piston offset by 90 °, and
  • Fig. 2 is an enlarged view of the section through the edge region of the piston crown with the ring element.
  • 1 shows a piston 1 for an internal combustion engine in a sectional view consisting of two halves, of which the left half is a section of the piston 1 along a longitudinal axis 2 of a hub bore 3 and the right half is a section through the piston offset by 90 ° 1 shows.
  • the piston 1 consists of an essentially cylindrical base body 4, one end face of which forms the piston head 5.
  • a ring element 6 is arranged in the radially outer region of the piston crown 5.
  • a combustion chamber 7 is formed in the central area of the piston crown 5.
  • the base body 4 has, on its underside facing away from the piston crown 5, pin bosses 8 for the hub bores 3 and the pin bosses 8 connecting shaft elements 9.
  • the ring element 6 has on its radially outer lateral surface 10 a ring carrier 11 for a compression ring (not shown in the figure) and below it a second ring groove 12.
  • An oil ring groove 14 is arranged below the second ring groove 12 in the lateral surface 13 of the base body 4.
  • the ring element 6 is fastened on the base body 4 via a screw connection, in which the ring element 6 is screwed onto an external thread 18 via an internal thread 19, which is located on the radially inner side of the ring element 6, which thread is on an axially aligned region 23 the lateral surface 13 is arranged, which adjoins the piston crown 5 and is set back in the direction of the piston longitudinal axis 17.
  • the radially inner side of the ring element 6 has at its lower end facing away from the piston crown 5 a recess 20 which forms an annular cooling channel 22 with a recess 21 formed in the lower end of the recessed jacket region 23 on the piston crown side. Cooling oil is introduced into the cooling duct 22 via channels not shown in the figure and is discharged again from the cooling duct 22.
  • the end of the screw connection 18, 19 on the piston bottom side is connected by means of a Sealed weld 24, which can be produced, for example, with the electron beam welding process.
  • the piston 1 consisting of the base body 4 and the ring element 6 is made of aluminum, the base body 4 being given the desired shape by forging, whereas the ring element 6 is produced in a casting process.
  • the ring carrier 11 consisting of NiResist (austenitic cast iron with components of Ni, Mn, Cu and Cr) is cast into the ring element 6 in the composite casting process.
  • the piston 1 is given the final shape by a machining production process, for example by turning.
  • the section shown in FIG. 2 through the edge region of the piston 1 on the piston-bottom side shows the ring element 6 with the cast-in ring carrier 11, which is connected to the base body 4 via the screw connection consisting of the internal thread 19 and the external thread 18.
  • the weld seam 24 used to seal the screw connection 18, 19 can be clearly seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

Piston (1) pour un moteur à combustion interne, qui possède un corps de base (4) essentiellement cylindrique en aluminium forgé et un segment (6) placé dans la zone de bordure externe radiale de la tête (5) de piston et formant avec le corps de base (4) un canal de refroidissement (22) annulaire. Le segment (6) est constitué d'aluminium coulé et possède un support annulaire (11) en NiResist pour une bague d'étanchéité.
EP04786700A 2003-09-02 2004-09-01 Piston pour un moteur a combustion interne Pending EP1664515A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10340292A DE10340292A1 (de) 2003-09-02 2003-09-02 Kolben für einen Verbrennungsmotor
PCT/DE2004/001938 WO2005024216A1 (fr) 2003-09-02 2004-09-01 Piston pour un moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP1664515A1 true EP1664515A1 (fr) 2006-06-07

Family

ID=34258322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04786700A Pending EP1664515A1 (fr) 2003-09-02 2004-09-01 Piston pour un moteur a combustion interne

Country Status (8)

Country Link
US (1) US20060278180A1 (fr)
EP (1) EP1664515A1 (fr)
JP (1) JP2007504388A (fr)
KR (1) KR20070020171A (fr)
CN (1) CN1842648A (fr)
BR (1) BRPI0414071A (fr)
DE (1) DE10340292A1 (fr)
WO (1) WO2005024216A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1719900B1 (fr) * 2005-05-04 2007-06-20 Pistal Racing S.r.L. Piston à haute densité d'alliage en métal pour le moteur à combustion interne et le procédé pour fabriquer un tel piston
DE102005044597A1 (de) * 2005-09-17 2007-03-29 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US20070295299A1 (en) * 2006-06-12 2007-12-27 Mahle Technology, Inc. Piston for a combustion engine
DE102007036236A1 (de) * 2007-08-02 2009-02-05 Mahle International Gmbh Gebauter Kolben
DE102007061601A1 (de) 2007-12-20 2009-06-25 Mahle International Gmbh Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung
WO2009079989A2 (fr) * 2007-12-20 2009-07-02 Mahle International Gmbh Procédé de fixation d'un élément annulaire sur un piston pour un moteur à combustion interne
DE102008038325A1 (de) 2007-12-20 2009-06-25 Mahle International Gmbh Verfahren zum Befestigen eines Ringelementes auf einem Kolben für einen Verbrennungsmotor
US9970384B2 (en) * 2009-11-06 2018-05-15 Federal-Mogul Llc Steel piston with cooling gallery and method of construction thereof
US8807109B2 (en) 2009-11-06 2014-08-19 Federal-Mogul Corporation Steel piston with cooling gallery and method of construction thereof
DE102010052578A1 (de) * 2010-11-25 2012-05-31 Daimler Ag Kolben für eine Brennkraftmaschine
DE102012215300A1 (de) 2012-08-29 2014-03-06 Federal-Mogul Nürnberg GmbH Kolben für Verbrennungskraftmaschinen aus mehreren Bauteilen und Verfahren zur Herstellung eines solchen Kolbens
EP2900992A1 (fr) * 2012-09-27 2015-08-05 KS Kolbenschmidt GMBH Piston en deux parties pour moteur à combustion interne
CN103291912B (zh) * 2013-06-28 2016-12-28 濮阳市亚利机械制造有限公司 空气炮专用活塞
CN103527467A (zh) * 2013-10-27 2014-01-22 天津市仕杰达能源技术开发有限公司 一种便于更换密封圈的活塞泵用的复合型活塞
US9845765B2 (en) * 2015-01-12 2017-12-19 General Electric Company Piston assembly for a reciprocating engine
CN104747312A (zh) * 2015-02-16 2015-07-01 山东滨州渤海活塞股份有限公司 带内冷油腔结构的内燃机活塞及内燃机
DE102016202420A1 (de) * 2016-02-17 2017-08-17 Hirschvogel Umformtechnik Gmbh Kolben für Verbrennungsmotor
US10648425B2 (en) * 2017-08-23 2020-05-12 Tenneco Inc. Piston with broad ovate gallery
CN108087141B (zh) * 2017-12-08 2020-03-31 湖南江滨机器（集团）有限责任公司 一种钢活塞及其制造方法
US10926362B2 (en) 2018-12-13 2021-02-23 Caterpillar Inc. Remanufactured engine piston and method
US10927786B1 (en) 2019-10-30 2021-02-23 Mahle International Gmbh Bi-metallic piston ring carrier

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US2159989A (en) * 1937-04-19 1939-05-30 Gen Motors Corp Welded two-piece light alloy piston
US2244008A (en) * 1939-06-16 1941-06-03 Gen Motors Corp Piston construction
US2772933A (en) * 1955-06-22 1956-12-04 Alco Products Inc Pistons
US3430969A (en) * 1966-05-25 1969-03-04 Trw Inc Piston with ring groove reinforcement
GB1542230A (en) * 1977-01-20 1979-03-14 Wellworthy Ltd Pistons
DE2828749C2 (de) * 1978-06-30 1983-10-20 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Kolben für Brennkraftmaschinen
US4548127A (en) * 1981-05-08 1985-10-22 Dunn Stephen J Piston for internal combustion engine
GB8413800D0 (en) * 1984-05-30 1984-07-04 Ae Plc Manufacture of pistons
DE3430056C1 (de) * 1984-08-16 1986-01-16 Mahle Gmbh, 7000 Stuttgart Tauchkolben mit faserverstaerkter Brennraummulde fuer Verbrennungsmotoren
JPH0245642A (ja) * 1988-08-08 1990-02-15 Sanshin Ind Co Ltd 内燃機関のピストン
US5056681A (en) * 1988-09-28 1991-10-15 Howes James P Prize holding container assemblies
US5388129A (en) * 1993-09-01 1995-02-07 Westinghouse Electric Corporation Apparatus and method for radiographic inspection of welds
DE4340267B4 (de) * 1993-11-26 2007-08-02 Mahle Gmbh Leichtmetall-Kolben mit einer Verbrennungsmulde
JP2908297B2 (ja) * 1995-11-24 1999-06-21 イズミ工業株式会社 ピストン鋳造方法
US6003479A (en) * 1997-05-12 1999-12-21 Evans; Mark M. Piston construction
US6029346A (en) * 1998-04-30 2000-02-29 Chellappa; Venkatesh Method of fabricating carbon--carbon engine component
RU2158699C1 (ru) * 1999-02-23 2000-11-10 Открытое акционерное общество НПО Энергомаш имени академика В.П. Глушко Бак для хранения и вытеснения жидкости
GB0125148D0 (en) * 2001-10-19 2001-12-12 Coflexip Bulkhead assembly for use in pipe-in-pipe systems
DE10325914B4 (de) * 2003-06-07 2012-08-02 Mahle Gmbh Kolben für einen Verbrennungsmotor

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Title
See references of WO2005024216A1 *

Also Published As

Publication number Publication date
KR20070020171A (ko) 2007-02-20
WO2005024216A1 (fr) 2005-03-17
JP2007504388A (ja) 2007-03-01
US20060278180A1 (en) 2006-12-14
CN1842648A (zh) 2006-10-04
DE10340292A1 (de) 2005-04-14
BRPI0414071A (pt) 2006-10-24

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