EP2329125A2 - Piston pour moteur à combustion interne - Google Patents

Piston pour moteur à combustion interne

Info

Publication number
EP2329125A2
EP2329125A2 EP09736093A EP09736093A EP2329125A2 EP 2329125 A2 EP2329125 A2 EP 2329125A2 EP 09736093 A EP09736093 A EP 09736093A EP 09736093 A EP09736093 A EP 09736093A EP 2329125 A2 EP2329125 A2 EP 2329125A2
Authority
EP
European Patent Office
Prior art keywords
piston
pressure
walls
box walls
shaft
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
EP09736093A
Other languages
German (de)
English (en)
Other versions
EP2329125B1 (fr
Inventor
Thomas Hettich
Michael Marquardt
Peter Kleinle
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 EP2329125A2 publication Critical patent/EP2329125A2/fr
Application granted granted Critical
Publication of EP2329125B1 publication Critical patent/EP2329125B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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 
    • F02F3/0076—Pistons  the inside of the pistons being provided with ribs or fins

Definitions

  • the invention relates to a piston for an internal combustion engine with a piston crown, with a land, with a circumferential ring portion, which has annular grooves, and with a piston skirt, which has two disposed on the pressure side and the counter-pressure side shaft walls and two walls connecting the shaft walls together, wherein the box walls are provided with pin bores having pin bosses, and wherein the arranged on the pressure side of the skirt wall viewed in the circumferential direction of the piston is shorter than the arranged on the counter-pressure side skirt wall.
  • the pressure-side box walls are rectilinear and oblique, wherein the distance between the box walls in the region of the pin bosses is greater than in the region of the pressure-side skirt wall.
  • the thickness of the pressure-side box walls, starting from the pin boss towards shaft wall increase linearly, and can decrease the thickness of the box walls, starting from the piston bottom facing away, free edges towards the piston crown, thereby further reducing the stress of the high claimed, piston-facing away region of the pressure and counter-pressure side shaft-box wall connection results.
  • the wall thicknesses In order to stress the structure homogeneously in the lower area of the shaft-box wall connection, the wall thicknesses must be designed according to the load. This ensures at the same time that on the strength side unnecessary stiffness disappears and weight can be saved. Therefore, the box wall thickness, starting from the hub in the direction of the shaft wall, increases continuously, while the shaft wall thickness, starting from the end facing away from the piston bottom, decreases in the direction of the piston crown. Furthermore, the increase in thickness of the box wall is realized in that the inner contour of the box wall is made obliquely than its outer contour. As a positive side effect from this one obtains a slight increase in the box wall inclination.
  • the above-described shaft-box wall connection according to the invention is usually carried out on the pressure side. If the counter-pressure side should be loaded higher than the pressure side due to a restricted crank drive, the design principle is applied on the counterpressure side. The lower loaded side of the shaft-box wall connection is then carried out as that which is referred to in German Patent Application 10 2007 020 447.9 as a counter-pressure side. ,
  • Figure 1 shows an embodiment of the piston according to the invention in section A-A in Figure 2 and Figure 2 and 3 shows a piston according to Figure 1 in a bottom view in the direction of
  • Figures 1 to 3 show an embodiment of the piston 10 according to the invention, which is particularly suitable for use in high-pressure gasoline engines.
  • the piston 10 has a piston bottom 11 and a peripheral land 12 and a circumferential ring portion 13 with annular grooves 14.
  • the piston 10 On the side facing away from the piston crown, the piston 10 has a piston shaft 15 which consists of a shaft wall 16 on the pressure side (DS) and a shaft wall 17 on the counter-pressure side (GDS), wherein the shaft walls 16 and 17 are connected via box walls 18 and 19 with each other.
  • the box walls 18, 19 each have a pin boss 21, each with a hub bore 20.
  • the skirt wall 16 on the pressure side (DS) viewed in the circumferential direction is shorter than the skirt wall 17 on the counter-pressure side (GDS).
  • the shaft walls 16,17 are formed asymmetrically.
  • the pressure side box walls 18 are rectilinear and inclined.
  • the skew is described by the angle ⁇ , which may be greater than or equal to zero. This results in the fact that the distance of the box walls 18 from one another in the region of the pin bosses 21 is greater than in the region of the pressure-side skirt 16.
  • the thickness "d" of the pressure-side box walls 18, starting from the pin boss 21, increases linearly in the direction of the skirt wall 16, as can be seen from FIG.

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 (10) pour moteur à combustion interne, comprenant un fond de piston (11), une zone de feu (12), une partie annulaire circonférentielle (13) présentant des rainures annulaires (14), et une tige de piston (15) qui présente deux parois de tige (16, 17) disposées côté pression (DS) et côté contre-pression (GDS), et deux parois d'enveloppe (18, 19) reliant les parois de tige (16, 17) entre elles, les parois d'enveloppe (18, 19) étant pourvues de pieds de bielle (21) présentant des alésages de moyeu (22), la paroi de tige (16) disposée côté pression (DS) étant plus courte, vue dans le sens périphérique du piston (10), que la paroi de tige (17) disposée côté contre-pression (GDS). En vue de réduire la contrainte du piston, l'invention est caractérisée en ce que les parois d'enveloppe côté pression (18) sont rectilignes et obliques, et en ce que la distance des parois d'enveloppe (18) dans la zone des pieds de bielle (21) est plus grande que dans la zone de la paroi de tige côté pression (16).
EP09736093.7A 2008-08-13 2009-08-12 Piston pour moteur à combustion interne Active EP2329125B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008038931 2008-08-13
DE102009032379A DE102009032379A1 (de) 2008-08-13 2009-07-08 Kolben für einen Verbrennungsmotor
PCT/DE2009/001119 WO2010017808A2 (fr) 2008-08-13 2009-08-12 Piston pour moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2329125A2 true EP2329125A2 (fr) 2011-06-08
EP2329125B1 EP2329125B1 (fr) 2018-02-21

Family

ID=41528325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09736093.7A Active EP2329125B1 (fr) 2008-08-13 2009-08-12 Piston pour moteur à combustion interne

Country Status (6)

Country Link
US (1) US20110174153A1 (fr)
EP (1) EP2329125B1 (fr)
JP (1) JP2011530669A (fr)
BR (1) BRPI0918437B1 (fr)
DE (1) DE102009032379A1 (fr)
WO (1) WO2010017808A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011002653A1 (de) 2011-01-13 2012-07-19 Federal-Mogul Nürnberg GmbH Kolben zum Einsatz in Verbrennungsmotoren
DE102011080822A1 (de) 2011-08-11 2013-02-14 Mahle International Gmbh Kolben
DE102012203570A1 (de) 2012-03-07 2013-09-12 Mahle International Gmbh Gegossener Leichtmetallkolben, insbesondere ein Aluminiumkolben
KR102068372B1 (ko) 2012-03-12 2020-01-20 테네코 인코퍼레이티드 엔진 피스톤
BR102012032765A2 (pt) * 2012-12-20 2014-09-30 Mahle Int Gmbh Pistão de motor de combustão interna
CN105940213B (zh) * 2013-11-07 2019-11-26 天纳克股份有限公司 整体式无通道活塞及其构造方法
DE102015217911A1 (de) * 2015-09-18 2017-03-23 Mahle International Gmbh Kolben für eine Brennkraftmaschine
DE102016201628A1 (de) * 2016-02-03 2017-08-03 Federal-Mogul Nürnberg GmbH Kolben aus Stahl- oder Grauguss für einen Verbrennungsmotor und Verfahren zur Herstellung eines Kolbens durch Stahl- oder Grauguss
DE102018203226A1 (de) 2018-03-05 2019-09-05 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor
CN108412630B (zh) * 2018-04-28 2024-08-16 江西腾勒动力有限公司 三缸发动机活塞

Family Cites Families (31)

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US1719092A (en) * 1929-07-02 Piston
GB130411A (en) * 1918-02-18 1919-08-07 Harry Ralph Ricardo Improvements in or relating to Pistons for Internal Combustion Engines.
US1653253A (en) * 1924-11-10 1927-12-20 Earl Holley Piston
US1774064A (en) * 1929-11-18 1930-08-26 Miller Dorr Compensating piston
US1960313A (en) * 1929-12-30 1934-05-29 Elmer C Long Piston for an internal combustion motor
US1944223A (en) * 1933-07-08 1934-01-23 Ray E Day Piston
US2120090A (en) * 1935-07-15 1938-06-07 Ray E Day Piston
US2147819A (en) * 1935-10-14 1939-02-21 Elmer C Long Piston for internal combustion motors
US2149862A (en) * 1936-07-20 1939-03-07 Adolph L Nelson Piston
US2141784A (en) * 1937-01-22 1938-12-27 Motor Res Corp Piston
US2177574A (en) * 1938-02-25 1939-10-24 Circle Motor Corp Piston
US3452649A (en) * 1966-12-13 1969-07-01 Andre Cornet Pistons
US3987709A (en) * 1975-04-07 1976-10-26 Day Ray E Piston
DE3425965A1 (de) * 1984-07-14 1986-01-16 Kolbenschmidt AG, 7107 Neckarsulm Leichtmetallkolben fuer brennkraftmaschinen
US5000078A (en) * 1987-04-18 1991-03-19 Mahle Gmbh Light metal trunk piston for internal combustion engines
JPH0736109Y2 (ja) * 1989-04-07 1995-08-16 トヨタ自動車株式会社 内燃機関のピストン
JP2561798Y2 (ja) * 1989-05-22 1998-02-04 株式会社ユニシアジェックス エンジン用ピストン
JP2762575B2 (ja) * 1989-06-19 1998-06-04 アイシン精機株式会社 ピストン
US5076225A (en) * 1989-12-28 1991-12-31 Toyota Jidosha Kabushiki Kaisha Piston for an internal combustion engine
JPH078541U (ja) * 1993-07-07 1995-02-07 本田技研工業株式会社 内燃機関用ピストン
JPH07247901A (ja) * 1994-03-04 1995-09-26 Toyota Motor Corp 内燃機関用ピストン
DE4414678A1 (de) * 1994-04-27 1995-11-02 Mahle Gmbh Leichtmetallkolben für Verbrennungsmotoren
JPH09329056A (ja) * 1996-06-11 1997-12-22 Toyota Motor Corp 内燃機関用ピストン
JPH1136978A (ja) * 1997-07-16 1999-02-09 Unisia Jecs Corp 内燃機関用ピストン
JPH11303674A (ja) * 1998-04-24 1999-11-02 Unisia Jecs Corp 内燃機関のピストン
JP2000282951A (ja) * 1999-01-29 2000-10-10 Honda Motor Co Ltd 内燃機関用ピストン
JP2002317691A (ja) * 2001-04-19 2002-10-31 Unisia Jecs Corp 内燃機関のピストン
JP2002332912A (ja) * 2001-04-30 2002-11-22 Honda Motor Co Ltd 内燃機関用ピストン
DE60301636T3 (de) * 2002-03-25 2010-09-30 Brp-Powertrain Gmbh & Co Kg Kolben
JP4544177B2 (ja) * 2006-02-20 2010-09-15 マツダ株式会社 エンジンのピストン構造
DE102007020447A1 (de) * 2007-04-27 2008-10-30 Mahle International Gmbh Kolben für einen Verbrennungsmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010017808A2 *

Also Published As

Publication number Publication date
DE102009032379A1 (de) 2010-02-18
WO2010017808A3 (fr) 2010-04-15
WO2010017808A2 (fr) 2010-02-18
BRPI0918437B1 (pt) 2019-11-26
JP2011530669A (ja) 2011-12-22
BRPI0918437A2 (pt) 2015-11-24
US20110174153A1 (en) 2011-07-21
EP2329125B1 (fr) 2018-02-21

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