EP1642017A1 - Piston de moteur a combustion interne - Google Patents

Piston de moteur a combustion interne

Info

Publication number
EP1642017A1
EP1642017A1 EP04738618A EP04738618A EP1642017A1 EP 1642017 A1 EP1642017 A1 EP 1642017A1 EP 04738618 A EP04738618 A EP 04738618A EP 04738618 A EP04738618 A EP 04738618A EP 1642017 A1 EP1642017 A1 EP 1642017A1
Authority
EP
European Patent Office
Prior art keywords
piston
ring element
projection
base body
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.)
Granted
Application number
EP04738618A
Other languages
German (de)
English (en)
Other versions
EP1642017B1 (fr
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 EP1642017A1 publication Critical patent/EP1642017A1/fr
Application granted granted Critical
Publication of EP1642017B1 publication Critical patent/EP1642017B1/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 
    • F02F3/0015—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
    • 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 
    • F02F2003/0007—Monolithic pistons; One piece constructions; Casting of pistons

Definitions

  • the invention relates to a piston for an internal combustion engine according to the preamble of claim 1.
  • a piston for an internal combustion engine which consists of a piston base body with pin bosses and with a box-shaped shaft.
  • a ring-shaped component is welded to the bottom area of the piston base body, in the outside of which part of the ring section is incorporated, and the upper part of which is designed as a top land.
  • the component forms, together with the part of the piston base body on the piston crown side, an annular cooling channel, which is closed by a peripheral wall formed on the piston base body on the hub side.
  • the annular component is welded to the piston base body via each of its two end faces, which makes the production of the piston known from the prior art very time-consuming and labor-intensive.
  • the invention is based on the problem of simplifying, accelerating and thus making the manufacturing process of a piston equipped with a cooling duct less expensive.
  • a useful embodiment of the invention is the subject of the dependent claim. This results in a quick and easy to produce screw connection between a piston body and a ring element, which is given great strength by the mechanical tension under which an elastically designed projection places the ring element.
  • 1 is a sectional view of a piston for an internal combustion engine consisting of two halves, which represent two longitudinal sections of the piston offset by 90 °,
  • Fig. 2 shows a cross section of the piston along the line A-A in Fig. 1 and Fig. 3 shows an embodiment of the lower end face of an annular element screwed to the piston body.
  • Fig. 1 shows a piston 1 for an internal combustion engine in a sectional view, which consists 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 longitudinal section of the piston offset by 90 ° thereto 1.
  • the piston 1 consists of a piston base body 4, to which a ring element 6 is screwed via a piston 5-side thread 5 and which carries a top land 7 and a ring section 8 of the piston 1.
  • the piston body 4 and the ring element 6 are made of steel.
  • the piston base body 4 is formed in one piece and has a combustion bowl 10 in the region of the piston head 9.
  • Two pin hubs 12, 12 ', each with a hub bore 3, 3', are formed on the piston head 9 via a hub support 11, 11 ', the end faces 16 of which are set back in relation to the ring element 6 in the direction of the longitudinal axis 17 of the piston.
  • the pin bosses 12, 12 ' are connected to one another via shaft elements 13, 13'.
  • the piston base body 4 has recesses 18 which, in the present exemplary embodiment, are arranged all around in the region of the shaft elements 13, 13' of the piston base body 4.
  • a piston base body 4 can also be used as the carrier of the ring element 6, in which the end faces 16 of the pin bosses 12, 12 'are not set back in relation to the ring section 8.
  • the recess 18 is partially between the entire circumference of the piston Shaft elements 13, 13 'and the ring element 6 and partially arranged circumferentially between the pin bosses 12, 12' and the ring element 6.
  • the piston base body 4 forms, together with the ring element 6, an annular cooling channel 14, which is partly incorporated into the piston base body 4 and partly into the ring element 6.
  • the cooling channel 14 is covered by a projection 15 of the piston base body 4, which is designed in the manner of a plate spring and, starting from the piston base body 4, is inclined in the direction of the piston head 9.
  • An outlet opening 20 of the cooling duct 14 can also be seen in FIG. 1.
  • FIG. 2 shows a section across the piston 1 along the line A-A in FIG. 1, in which the side of the piston head 9 facing the pin bosses 12, 12 'can be seen in a bottom view.
  • 2 shows an inlet opening 19 and the outlet opening 20 of the cooling channel 14, which is not recognizable in the selected form of representation, for cooling liquid provided for cooling the piston 1.
  • the shaft elements 13, 13 'and the bolt hubs 12, 12' connected to them are hatched. 2 also shows the projection 15, which is visible from below in the area of the recessed end faces 16 of the pin bosses 12, 12 ', and the lower end face 21 of the ring element 6.
  • the thread 5 can first be provided with a ceramic sealant before the ring element 6 is screwed onto the prefabricated piston base body 4 via the thread 5.
  • the lower end face 21 of the ring element 6 comes into contact with the surface 25 of the projection 15, which in the present exemplary embodiment is flat, that is to say is plateau-like, but which can also be roof-shaped or plate-shaped or can have a spherical shape.
  • the projection 15 is so thin-walled that it yields elastically when the ring element 6 is screwed on, when it exerts pressure on the projection 15. After unscrewing the ring element 6, the projection 15 puts the ring element 6 under mechanical tension, which improves the activity of the screw connection between the ring element 6 and the bottom region of the piston body 4 contributes.
  • the lower end face 21 of the ring element 6 is provided with a recess 24 which has a radially aligned surface 22 on its inside and then an axially aligned surface 23 on its outside.
  • the axially lying surface 23 is screwed into the lower end face 21 of the ring element 6 in the radial direction to such an extent that, as shown in FIG.

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)

Abstract

L'invention concerne un piston (1) de moteur à combustion interne, ce piston étant constitué par un corps principal (4), sur lequel est vissé un élément annulaire (6) qui forme, avec le corps principal (4) du piston un canal de refroidissement (14) annulaire fermé par un épaulement (15) dudit corps principal (4) en direction des moyeux d'axes (12, 12'). Cet épaulement (15), en forme de rondelle-ressort élastique, se déforme lorsque l'élément annulaire (6) est vissé et contribue ainsi à la résistance de l'assemblage par vis.
EP04738618A 2003-06-07 2004-06-07 Piston de moteur a combustion interne Expired - Lifetime EP1642017B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10325914A DE10325914B4 (de) 2003-06-07 2003-06-07 Kolben für einen Verbrennungsmotor
PCT/DE2004/001164 WO2004111420A1 (fr) 2003-06-07 2004-06-07 Piston de moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1642017A1 true EP1642017A1 (fr) 2006-04-05
EP1642017B1 EP1642017B1 (fr) 2011-05-11

Family

ID=33482690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04738618A Expired - Lifetime EP1642017B1 (fr) 2003-06-07 2004-06-07 Piston de moteur a combustion interne

Country Status (8)

Country Link
US (1) US6938537B2 (fr)
EP (1) EP1642017B1 (fr)
JP (1) JP4365409B2 (fr)
KR (1) KR101142238B1 (fr)
CN (1) CN100412345C (fr)
BR (1) BRPI0411090B1 (fr)
DE (1) DE10325914B4 (fr)
WO (1) WO2004111420A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10340292A1 (de) * 2003-09-02 2005-04-14 Mahle Gmbh Kolben für einen Verbrennungsmotor
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
US20070283917A1 (en) * 2006-06-12 2007-12-13 Lapp Michael T Piston for a combustion engine
DE102007027162A1 (de) 2007-06-13 2008-12-18 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
DE102007036236A1 (de) * 2007-08-02 2009-02-05 Mahle International Gmbh Gebauter Kolben
DE102008038325A1 (de) 2007-12-20 2009-06-25 Mahle International Gmbh Verfahren zum Befestigen eines Ringelementes auf einem Kolben für einen Verbrennungsmotor
DE102008045456A1 (de) * 2008-09-02 2010-03-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
WO2011064853A1 (fr) * 2009-11-25 2011-06-03 トヨタ自動車株式会社 Piston pour moteur à combustion interne et moteur à combustion interne
US8776670B2 (en) * 2010-02-17 2014-07-15 Mahle International Gmbh Piston assembly
BR112015005723A2 (pt) * 2012-09-27 2017-07-04 Ks Kolbenschmidt Gmbh pistão construído em duas peças de uma máquina de combustão interna
DE102014000253A1 (de) * 2014-01-08 2015-07-09 Mahle International Gmbh Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
CN109312688A (zh) 2016-05-04 2019-02-05 Ks科尔本施密特有限公司 活塞
CN115492694A (zh) * 2022-09-14 2022-12-20 重庆潍柴发动机有限公司 振荡冷却活塞

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DE278074C (fr) *
GB186060A (en) * 1921-09-17 1923-02-22 Christian Bergh Backer Improvements in or relating to pistons
US1723823A (en) * 1926-03-15 1929-08-06 Perfect Circle Co Piston
DE589409C (de) * 1930-11-02 1933-12-14 Elektronmetall G M B H Kolben fuer Brennkraftmaschinen
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
DE1049174B (de) * 1956-10-25 1959-01-22 Mahle Kg OElgekuehlter Kolben, insbesondere fuer Brennkraftmaschinen
US3190273A (en) * 1964-01-03 1965-06-22 Continental Aviat & Eng Corp Piston for internal combustion engine
DE1245640B (de) * 1964-11-25 1967-07-27 Mahle Kg Kolben fuer Brennkraftmaschinen
DK112141B (da) * 1966-07-12 1968-11-11 Burmeister & Wains Mot Mask Stempel, navnlig til forbrændingsmotorer.
DE2140824C2 (de) * 1971-08-14 1983-06-01 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Ölgekühlter Kolben für Brennkraftmaschinen
DE2348870A1 (de) 1973-09-28 1975-04-10 Maschf Augsburg Nuernberg Ag Mehrteiliger kolben fuer brennkraftmaschinen, insbesondere grossdieselmotoren
DD123962A1 (fr) * 1975-12-24 1977-01-26
GB1588515A (en) * 1976-09-02 1981-04-23 Ass Eng Ltd Pistons
DE2914456A1 (de) * 1979-04-10 1980-10-23 Schmidt Gmbh Karl Gebauter kolben fuer brennkraftmaschinen
US4286505A (en) * 1979-04-23 1981-09-01 Caterpillar Tractor Co. Oil cooled piston
DE3338419A1 (de) * 1983-10-22 1985-05-02 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Kolben fuer eine hubkolbenbrennkraftmaschine
IT1240526B (it) * 1990-07-31 1993-12-17 Borgo Nova S.P.A. Perfezionamento relativo a pistoni, in genere.
DE4208037C2 (de) * 1992-03-13 1998-03-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
US6003479A (en) * 1997-05-12 1999-12-21 Evans; Mark M. Piston construction
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
US6286414B1 (en) * 1999-08-16 2001-09-11 Caterpillar Inc. Compact one piece cooled piston and method
DE10047258C2 (de) * 2000-09-23 2003-02-06 Ks Kolbenschmidt Gmbh Kolben mit sich am Basisteil abstützenden und angeschweißtem Ringabschnitt
JP3714170B2 (ja) * 2001-02-05 2005-11-09 日本電気株式会社 オンラインショッピング決済方法及びそのシステム並びにオンラインショッピング決済プログラム

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004111420A1 *

Also Published As

Publication number Publication date
US6938537B2 (en) 2005-09-06
DE10325914A1 (de) 2004-12-23
BRPI0411090A (pt) 2006-07-25
KR20060014443A (ko) 2006-02-15
CN1802498A (zh) 2006-07-12
JP4365409B2 (ja) 2009-11-18
DE10325914B4 (de) 2012-08-02
BRPI0411090B1 (pt) 2015-05-12
HK1088941A1 (zh) 2006-11-17
US20040244581A1 (en) 2004-12-09
CN100412345C (zh) 2008-08-20
WO2004111420A1 (fr) 2004-12-23
JP2006527326A (ja) 2006-11-30
EP1642017B1 (fr) 2011-05-11
KR101142238B1 (ko) 2012-05-07

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