EP0757754A1 - Piston en metal leger pour moteurs a combustion interne - Google Patents

Piston en metal leger pour moteurs a combustion interne

Info

Publication number
EP0757754A1
EP0757754A1 EP95913033A EP95913033A EP0757754A1 EP 0757754 A1 EP0757754 A1 EP 0757754A1 EP 95913033 A EP95913033 A EP 95913033A EP 95913033 A EP95913033 A EP 95913033A EP 0757754 A1 EP0757754 A1 EP 0757754A1
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
shaft
counter
pressure side
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
Application number
EP95913033A
Other languages
German (de)
English (en)
Other versions
EP0757754B1 (fr
Inventor
Martin Lutz
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 EP0757754A1 publication Critical patent/EP0757754A1/fr
Application granted granted Critical
Publication of EP0757754B1 publication Critical patent/EP0757754B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F02F3/022—Pistons  having means for accommodating or controlling heat expansion the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval

Definitions

  • the invention relates to a light metal piston for internal combustion engines according to the preamble of claim 1.
  • the present invention is therefore concerned with the problem of finding, in a structurally simple manner, a piston which has a uniform load-bearing behavior over the entire shaft height in the region of the pressure and / or counter-pressure side of the piston skirt.
  • the invention is based on a preferred, in the drawing illustrated embodiment, which shows a sketch of a piston according to the invention in perspective view in section.
  • a light metal piston 1 for an internal combustion engine in particular for a motor vehicle, consists in one piece of a piston head 2 and piston ring groove part 3 having a piston head and a piston skirt 4, piston pin bosses 5 attached to the piston head 2 for receiving the piston pin (not drawn) serve.
  • the wall thickness in the load-bearing area is, for example, the pressure side 6 of the piston skirt 4 is designed such that it decreases continuously from the lower edge 7 of the shaft 7 or, in the presence of a collar that runs around the inside at the lower shaft end, from the upper edge thereof over the entire height of the shaft, the inner contour 8 of the shaft being conical, and on the other hand from the center plane lying in the longitudinal direction of the piston and going through the pressure 6 counter pressure side 9 decreases uniformly in the circumferential direction towards both sides.
  • the length L of the wall thickness decreasing from the center plane in the circumferential direction continuously decreases from the lower shaft edge 7 over the shaft height, so that in the half-section of the piston according to the drawing on the inside of the piston shaft 4 there is a so-called "triangular collar”"designated thickening 10 results in the continuous transition into the piston skirt 4.
  • a light-metal piston is created in a structurally simple manner, in which good running behavior of the piston is achieved with an excellent contact pattern on the pressure and / or counterpressure side of the piston shaft, which also reduces the friction and noise.

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

L'invention concerne un piston en métal léger (1) pour moteurs à combustion interne d'automobiles. Afin d'améliorer le guidage du piston dans le cylindre par un comportement uniforme sous différentes sollicitations du côté pression et/ou contre-pression de la jupe du piston (4), l'épaisseur de la paroi de la jupe du piston, doit être différente dans la zone du côté pression et/ou contre-pression de celle d'autres zones, de manière qu'il y ait, dans cette zone, un épaississement (10) sur le côté intérieur de la jupe du piston, qui diminue progressivement depuis l'arête inférieure (7) de la jupe et depuis un plan médian situé dans le sens longitudinal du piston et dans le sens de la pression/contre-pression, pour revenir à l'épaisseur normale.
EP95913033A 1994-04-27 1995-03-16 Piston en metal leger pour moteurs a combustion interne Expired - Lifetime EP0757754B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4414678A DE4414678A1 (de) 1994-04-27 1994-04-27 Leichtmetallkolben für Verbrennungsmotoren
DE4414678 1994-04-27
PCT/DE1995/000370 WO1995029332A1 (fr) 1994-04-27 1995-03-16 Piston en metal leger pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP0757754A1 true EP0757754A1 (fr) 1997-02-12
EP0757754B1 EP0757754B1 (fr) 1998-07-01

Family

ID=6516563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95913033A Expired - Lifetime EP0757754B1 (fr) 1994-04-27 1995-03-16 Piston en metal leger pour moteurs a combustion interne

Country Status (4)

Country Link
US (1) US5701803A (fr)
EP (1) EP0757754B1 (fr)
DE (2) DE4414678A1 (fr)
WO (1) WO1995029332A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5839352A (en) * 1996-08-07 1998-11-24 Cummins Engine Company, Inc. Articulated piston
DE19733814C2 (de) * 1996-08-07 2001-03-29 Cummins Engine Co Inc Motorkolben
JPH11303674A (ja) 1998-04-24 1999-11-02 Unisia Jecs Corp 内燃機関のピストン
US6209510B1 (en) 1998-07-28 2001-04-03 Teledyne Technologies Incorporated Piston and connecting rod assembly
DE19908670C2 (de) * 1999-02-27 2001-02-22 Federal Mogul Burscheid Gmbh Kolben für Brennkraftmaschinen
US7293497B2 (en) 2005-11-03 2007-11-13 Dresser, Inc. Piston
US7302884B2 (en) 2005-11-03 2007-12-04 Dresser, Inc. Piston
DE102007020447A1 (de) * 2007-04-27 2008-10-30 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102009032379A1 (de) * 2008-08-13 2010-02-18 Mahle International Gmbh Kolben für einen Verbrennungsmotor
JP5543908B2 (ja) * 2010-12-24 2014-07-09 本田金属技術株式会社 エンジン用のピストン
DE102015209591B4 (de) 2015-05-26 2021-03-11 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB105312A (fr) * 1900-01-01
US1885681A (en) * 1930-02-13 1932-11-01 Newton J Buren Piston construction
GB509519A (en) * 1937-05-25 1939-07-18 Hermann Mahle Improvements in pistons for internal combustion engines
US2544775A (en) * 1948-10-27 1951-03-13 Newton J Buren Piston construction
US2660492A (en) * 1951-07-02 1953-11-24 Harold S Lewis Piston stabilizer
GB741466A (en) * 1952-12-03 1955-12-07 Hermann Mahle Improvements in or relating to pistons for internal combustion engines
GB867854A (en) * 1957-12-19 1961-05-10 Hermann Mahle Light-metal piston
GB1145873A (en) * 1966-04-18 1969-03-19 Tatra Np Improvements in or relating to pistons for internal combustion engines
US3463057A (en) * 1967-03-23 1969-08-26 Int Harvester Co Arrangement of cylinder and piston in engine
GB1232990A (fr) * 1967-09-28 1971-05-26
US3533329A (en) * 1968-01-09 1970-10-13 Ercole Galli Method for manufacturing light alloy pistons with an insert of a different metal,and pistons manufactured thereby
JPS6198948A (ja) * 1984-10-22 1986-05-17 Toyota Motor Corp 内燃機関用ピストン
DE3625492A1 (de) * 1986-07-28 1988-02-04 Kloeckner Humboldt Deutz Ag Mehrteiliger kolben fuer eine brennkraftmaschine
JPH0750049Y2 (ja) * 1986-11-25 1995-11-15 イズミ工業株式会社 熱膨張抑制ピストン用ストラット
DE3840841A1 (de) * 1988-12-03 1990-06-07 Kolbenschmidt Ag Leichtmetallkolben fuer brennkraftmaschinen
US4907545A (en) * 1988-12-28 1990-03-13 Caterpillar Inc. Liquid cooled piston ring carrier assembly and piston using same
SU1687830A1 (ru) * 1989-04-04 1991-10-30 Тульский Политехнический Институт Поршень двигател внутреннего сгорани
JP2762575B2 (ja) * 1989-06-19 1998-06-04 アイシン精機株式会社 ピストン
GB8927125D0 (en) * 1989-11-30 1990-01-31 Hepworth & Grandage Ltd Pistons

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9529332A1 *

Also Published As

Publication number Publication date
WO1995029332A1 (fr) 1995-11-02
US5701803A (en) 1997-12-30
DE59502689D1 (de) 1998-08-06
DE4414678A1 (de) 1995-11-02
EP0757754B1 (fr) 1998-07-01

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