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EP1238191B1 - Bottom covering of a cooling chamber for pistons of internal combustion engines - Google Patents

Bottom covering of a cooling chamber for pistons of internal combustion engines Download PDF

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Publication number
EP1238191B1
EP1238191B1 EP00988687A EP00988687A EP1238191B1 EP 1238191 B1 EP1238191 B1 EP 1238191B1 EP 00988687 A EP00988687 A EP 00988687A EP 00988687 A EP00988687 A EP 00988687A EP 1238191 B1 EP1238191 B1 EP 1238191B1
Authority
EP
European Patent Office
Prior art keywords
pistons
cooling chamber
covering
bottom covering
internal combustion
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.)
Expired - Lifetime
Application number
EP00988687A
Other languages
German (de)
French (fr)
Other versions
EP1238191A1 (en
Inventor
Klaus Keller
Peter Kemnitz
Roland Lochmann
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 EP1238191A1 publication Critical patent/EP1238191A1/en
Application granted granted Critical
Publication of EP1238191B1 publication Critical patent/EP1238191B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 
    • F02F3/16—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/921—Snap-fit

Definitions

  • the invention relates to a lower cover of a cold room for pistons of internal combustion engines according to the preamble of claim 1.
  • Such covers are z. B. known from US 3,221,718, US 4,377,967 A or from DD-PS 91162.
  • Fig. 4 and Fig. 5 of US 4,377,967 is shown a standpipe 38, the one certain level above the cover or in to ensure the cup 70.
  • the standpipe is made Metal and is by soldering or welding with the cover connected.
  • DE-PS 91162 protrudes an injection tube 15 both up into the cooling channel as well as tube-like inlet downwards in the direction of an oil spray nozzle 17. The method of fixing the injection tube at Cooling channel is not recognizable. It is assumed that the injection tube also with the sheet metal cooling channel 13th welded or soldered.
  • the invention therefore deals with the problem of a Standpipe or an inlet in a simple manner at a lower To secure the refrigerator cover of a piston. This Problem is solved by the characterizing feature of Claim 1. Advantageous developments are the subject the dependent claims.
  • the Swissclipsende component is advantageously made of plastic, because in plastic spring-locking parts formed simultaneously with the production of the standpipe can be. As a manufacturing process is plastic injection molding appropriate. For higher loads, the admirclipsende Component also made of metal.
  • inventive einclipsbare standpipes one deviating from the circular ring shape, in particular oval Cross-section on.
  • the application is particularly intended for approximately circular lower covers of cooling ducts, according to DE 4208037 C by at least two parts on its circumference, radially fixed tensioned plate spring is formed, the radially inwardly and outwardly at axially opposite sides bears free on supports, as in the following in Fig. 1 shown.
  • the lower cover of the refrigerator can also einstükkig with piston body, e.g. at welded Piston, in particular pistons produced by friction welding.
  • a pendulum piston 1 has a cooling channel 2, the down through a cover 3 in the form of a two-part Disc spring is closed.
  • a standpipe 4 - which is also designed as an inlet - fixed by snapping.
  • the standpipe 4 is in the assembly from below into the cover 3 inserted. This is the area with the Locking lugs 5 elastically deformed inward and springs, as soon as the contact surface 6 rests against the cover 3, in the Snap position by the standpipe 4 with the directly below the locking lugs 5 lying groove in the cover. 3 locks.
  • In its lower portion 7 is the standpipe widened funnel-shaped.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Description

Die Erfindung betrifft eine untere Abdeckung eines Kühlraumes für Kolben von Verbrennungsmotoren nach dem Oberbegriff des Anspruchs 1.The invention relates to a lower cover of a cold room for pistons of internal combustion engines according to the preamble of claim 1.

Derartige Abdeckungen sind z. B. bekannt aus der US 3,221,718, US 4,377,967 A oder aus der DD-PS 91162. In Fig. 4 und Fig. 5 der US 4,377,967 ist ein Standrohr 38 dargestellt, das eine bestimmte Füllhöhe oberhalb der Abdeckung bzw. in dem Napf 70 gewährleisten soll. Das Standrohr besteht aus Metall und ist durch Löten oder Schweißen mit der Abdeckung verbunden. Bei der DE-PS 91162 ragt ein Einspritzröhrchen 15 sowohl nach oben in den Kühlkanal hinein als auch als rohrartiger Zulauf nach unten in Richtung einer Öl-Spritzdüse 17. Die Art der Befestigung des Einspritzröhrchens am Kühlkanal ist nicht erkennbar. Es ist davon auszugehen, daß das Einspritzröhrchen ebenfalls mit dem Blechkühlkanal 13 verschweißt oder verlötet ist.Such covers are z. B. known from US 3,221,718, US 4,377,967 A or from DD-PS 91162. In Fig. 4 and Fig. 5 of US 4,377,967 is shown a standpipe 38, the one certain level above the cover or in to ensure the cup 70. The standpipe is made Metal and is by soldering or welding with the cover connected. In DE-PS 91162 protrudes an injection tube 15 both up into the cooling channel as well as tube-like inlet downwards in the direction of an oil spray nozzle 17. The method of fixing the injection tube at Cooling channel is not recognizable. It is assumed that the injection tube also with the sheet metal cooling channel 13th welded or soldered.

Das Verschweißen oder Verlöten eines Standrohres bzw. eines Zulaufes in der Abdeckung stellt jedoch einen aufwendigen Fertigungsschritt dar.The welding or soldering of a standpipe or a Zulaufes in the cover, however, makes a complex Production step dar.

Die Erfindung beschäftigt sich daher mit dem Problem, ein Standrohr bzw. einen Zulauf auf einfache Weise an einer unteren Kühlraumabdeckung eines Kolbens zu befestigen. Dieses Problem wird gelöst durch das kennzeichnende Merkmal des Anspruchs 1. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche. The invention therefore deals with the problem of a Standpipe or an inlet in a simple manner at a lower To secure the refrigerator cover of a piston. This Problem is solved by the characterizing feature of Claim 1. Advantageous developments are the subject the dependent claims.

Durch das Einrasten bzw. Einclipsen eines Standrohres oder eines Zulaufrohres in die Abdeckung ist eine sehr einfache und kostensparende Befestigung gegeben.By snapping or clipping a standpipe or a supply pipe in the cover is a very simple and cost-saving attachment.

Das einzuclipsende Bauteil besteht vorteilhaft aus Kunststoff, da bei Kunststoff die federnd einrastenden Teile gleichzeitig mit der Herstellung des Standrohres angeformt werden können. Als Herstellverfahren ist Kunststoffspritzgießen zweckmäßig. Für höhere Belastungen kann das einzuclipsende Bauteil auch aus Metall bestehen.The einzuclipsende component is advantageously made of plastic, because in plastic spring-locking parts formed simultaneously with the production of the standpipe can be. As a manufacturing process is plastic injection molding appropriate. For higher loads, the einzuclipsende Component also made of metal.

Vorteilhaft weisen erfindungsgemäße einclipsbare Standrohre einen von der Kreisringform abweichenden, insbesondere ovalen Querschnitt auf.Advantageously, inventive einclipsbare standpipes one deviating from the circular ring shape, in particular oval Cross-section on.

Die Anwendung ist insbesondere vorgesehen für etwa kreisringförmige untere Abdeckungen von Kühlkanälen, die gemäß DE 4208037 C durch eine auf ihrem Umfang mindestens zweigeteilte, radial fixierte gespannte Tellerfeder gebildet ist, die radial innen und außen an axial entgegengesetzten Seiten frei an Auflagern anliegt, wie im folgenden in Fig. 1 dargestellt.The application is particularly intended for approximately circular lower covers of cooling ducts, according to DE 4208037 C by at least two parts on its circumference, radially fixed tensioned plate spring is formed, the radially inwardly and outwardly at axially opposite sides bears free on supports, as in the following in Fig. 1 shown.

Die untere Abdeckung des Kühlraumes kann aber auch einstükkig mit Kolbengrundkörper vorliegen, z.B. bei geschweißten Kolben, insbesondere durch Reibschweißen hergestellten Kolben.The lower cover of the refrigerator can also einstükkig with piston body, e.g. at welded Piston, in particular pistons produced by friction welding.

Die Erfindung wird im folgenden anhand einer Zeichnung näher erläutert. Es zeigt:

Fig. 1
eine erfindungsgemäße untere Abdeckung eines Kühlraums in einem Kolben
Fig. 2
ein in eine Kühlraumabdeckung einclipsbares Standrohr (Querschnitt, Draufsicht).
The invention will be explained in more detail below with reference to a drawing. It shows:
Fig. 1
a lower cover of a cooling space in a piston according to the invention
Fig. 2
a clipable into a cold room cover standpipe (cross section, top view).

Ein Pendelschaftkolben 1 weist einen Kühlkanal 2 auf, der nach unten durch eine Abdeckung 3 in Form einer zweigeteilten Tellerfeder verschlossen ist. In der Abdeckung 3 ist ein Standrohr 4 - das auch als Zulauf ausgebildet ist - durch Einrasten fixiert.A pendulum piston 1 has a cooling channel 2, the down through a cover 3 in the form of a two-part Disc spring is closed. In the cover 3 is a standpipe 4 - which is also designed as an inlet - fixed by snapping.

Das Standrohr 4 wird bei der Montage von unten in die Abdeckung 3 eingeschoben. Dabei wird der Bereich mit den Rastnasen 5 elastisch nach innen verformt und federt, sobald die Anlagefläche 6 an der Abdeckung 3 anliegt, in die Einrastposition, indem das Standrohr 4 mit der direkt unterhalb der Rastnasen 5 liegenden Nut in die Abdeckung 3 einrastet. In seinem unteren Bereich 7 ist das Standrohr trichterförmig aufgeweitet.The standpipe 4 is in the assembly from below into the cover 3 inserted. This is the area with the Locking lugs 5 elastically deformed inward and springs, as soon as the contact surface 6 rests against the cover 3, in the Snap position by the standpipe 4 with the directly below the locking lugs 5 lying groove in the cover. 3 locks. In its lower portion 7 is the standpipe widened funnel-shaped.

Claims (4)

  1. A bottom covering (3) of a cooling chamber (2) for pistons (1) of internal combustion engines, in particular a roughly annular covering or part of an overall roughly annular covering, having a tubular inlet (4) and/or a tubular grommet (4) which are in each case fastened to the covering (3),
    characterised in that the tubular inlet (4) and/or the grommet (4) is/are fixed on the covering by a detent connection or by clipping.
  2. A bottom covering (3) of a cooling chamber (2) for pistons according to Claim 1,
    characterised in that the tubular inlet (4) or the grommet (4) is made of plastic.
  3. A bottom covering (3) of a cooling chamber (2) for pistons (1) according to Claim 1 or 2,
    characterised in that the cross section of the tubular inlet (4) or of the grommet (4) deviates from the circular shape.
  4. A bottom covering (3) of a cooling chamber (2) for pistons (1) according to Claim 3,
    characterised in that the cross section is oval.
EP00988687A 1999-12-17 2000-12-05 Bottom covering of a cooling chamber for pistons of internal combustion engines Expired - Lifetime EP1238191B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19960913A DE19960913A1 (en) 1999-12-17 1999-12-17 Bottom cover of a cold room for pistons of internal combustion engines
DE19960913 1999-12-17
PCT/DE2000/004358 WO2001044645A1 (en) 1999-12-17 2000-12-05 Bottom covering of a cooling chamber for pistons of internal combustion engines

Publications (2)

Publication Number Publication Date
EP1238191A1 EP1238191A1 (en) 2002-09-11
EP1238191B1 true EP1238191B1 (en) 2005-07-20

Family

ID=7933039

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00988687A Expired - Lifetime EP1238191B1 (en) 1999-12-17 2000-12-05 Bottom covering of a cooling chamber for pistons of internal combustion engines

Country Status (6)

Country Link
US (1) US6722263B2 (en)
EP (1) EP1238191B1 (en)
JP (1) JP2003517139A (en)
BR (1) BR0016461B1 (en)
DE (2) DE19960913A1 (en)
WO (1) WO2001044645A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014020066A1 (en) 2012-08-01 2014-02-06 Mahle International Gmbh Piston
DE102014015946A1 (en) 2014-10-30 2016-05-19 Mahle International Gmbh Cooling duct cover and piston provided with a cooling channel cover
DE102014015947A1 (en) 2014-10-30 2016-05-19 Mahle International Gmbh Cooling duct cover and piston provided with a cooling channel cover

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6401595B1 (en) * 2000-10-18 2002-06-11 Caterpillar Inc. Piston for an internal combustion engine and method of assembly
DE10214830A1 (en) 2002-04-04 2004-01-08 Mahle Gmbh Oil inlet for a piston of an internal combustion engine provided with a cooling channel
DE10221561A1 (en) * 2002-05-15 2004-01-08 Mahle Gmbh Cooled piston for an internal combustion engine
US6820582B1 (en) * 2003-10-06 2004-11-23 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
DE10346819A1 (en) * 2003-10-06 2005-04-21 Mahle Gmbh One-piece piston for an internal combustion engine
US6920860B2 (en) * 2003-10-06 2005-07-26 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
US6892690B2 (en) * 2003-10-06 2005-05-17 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
DE102004019011A1 (en) * 2004-04-20 2005-11-17 Mahle Gmbh Cooling duct cover for a piston of an internal combustion engine
DE102004029926B4 (en) * 2004-06-21 2007-09-20 Federal-Mogul Nürnberg GmbH Piston for an internal combustion engine
DE102004029927B4 (en) * 2004-06-21 2006-07-13 Federal-Mogul Nürnberg GmbH Piston for internal combustion engine, has cooling conduit with base, inlet and outlet openings, and flanges provided in area of openings, where flanges extend above base of cooling conduit
DE102004057624A1 (en) * 2004-11-30 2006-06-01 Mahle International Gmbh Piston for internal combustion engine, has cooling duct which is closed by cooling duct cover that is provided with tongue in radial inner zone, where tongue engages into recess that is molded into bottom part of piston
DE102007050213A1 (en) * 2007-10-20 2009-04-23 Mahle International Gmbh Piston for an internal combustion engine
US8347842B2 (en) * 2008-02-19 2013-01-08 Federal-Mogul Corporation Coolable piston for internal combustion engine
US7762227B2 (en) * 2008-02-19 2010-07-27 Federal Mogul Corporation Coolable piston for internal combustion engine
US9238283B2 (en) * 2008-07-24 2016-01-19 Ks Kolbenschmidt Gmbh Friction welded steel piston having optimized cooling channel
DE102009056922B4 (en) * 2009-12-03 2019-03-14 Mahle International Gmbh Inlet funnel for the cooling channel of a piston
DE102011013113A1 (en) 2011-03-04 2012-09-06 Mahle International Gmbh Piston for an internal combustion engine and method for its production
DE102011076369A1 (en) 2011-05-24 2012-11-29 Mahle International Gmbh Lower cover, particularly one- or multipart ring-shaped cover, for cooling channel of piston of internal combustion engine, has stand pipe-shaped inlet and stand pipe-shaped outlet, where inlet and outlet are formed in single piece
DE102011106379A1 (en) * 2011-07-04 2013-01-10 Mahle International Gmbh Piston for an internal combustion engine
PL3129629T3 (en) * 2014-04-09 2018-11-30 Ks Kolbenschmidt Gmbh Elongated cooling channel inlet for cooling channel pistons, and method for operating the same
US9920869B2 (en) * 2014-05-22 2018-03-20 United Technologies Corporation Cooling systems for gas turbine engine components
WO2016100936A1 (en) 2014-12-19 2016-06-23 Federal-Mogul Corporation Piston with cooling gallery having enhaced oil inlet and method of construction thereof
US10227948B2 (en) 2015-12-18 2019-03-12 Mahle International Gmbh Piston for an internal combustion engine
USD886155S1 (en) 2015-12-18 2020-06-02 Mahle International Gmbh Piston for an internal combustion engine
DE102016221352A1 (en) 2016-10-28 2018-05-03 Mahle International Gmbh Method for producing a piston
DE102018218497A1 (en) * 2018-10-29 2020-04-30 Mahle International Gmbh Piston of an internal combustion engine
US20220205408A1 (en) * 2019-04-09 2022-06-30 Ks Kolbenschmidt Gmbh Gallery-cooled piston with a funnel-shaped inlet into the cooling gallery
DE102019213358A1 (en) * 2019-09-03 2021-03-04 Mahle International Gmbh piston
DE102021201154A1 (en) 2021-02-08 2022-08-11 Mahle International Gmbh Method of assembly of a feed hopper and associated feed hopper and piston

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DE3733965A1 (en) 1987-10-08 1989-04-20 Ulrich Dipl Ing Bellmann Method for obtaining information from strongly mutilated data of a time signal transmitter
DE3733964A1 (en) * 1987-10-08 1989-04-20 Mahle Gmbh Coolable trunk piston for internal combustion engines
JPH0235972U (en) * 1988-07-06 1990-03-08
JP3082320B2 (en) * 1991-06-25 2000-08-28 株式会社デンソー Starter
JP2522876Y2 (en) * 1991-12-17 1997-01-16 株式会社デンソー Starter drain structure
DE4208037C2 (en) * 1992-03-13 1998-03-26 Mahle Gmbh Multi-part, cooled piston for internal combustion engines
DE4410141B4 (en) * 1994-03-24 2008-05-08 Mahle Gmbh Closing of production-related holes in pistons with cooling channel
JP3396128B2 (en) * 1996-05-17 2003-04-14 則男 大津賀 Branch pipe connection device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014020066A1 (en) 2012-08-01 2014-02-06 Mahle International Gmbh Piston
DE102012213558A1 (en) 2012-08-01 2014-02-06 Mahle International Gmbh piston
DE102014015946A1 (en) 2014-10-30 2016-05-19 Mahle International Gmbh Cooling duct cover and piston provided with a cooling channel cover
DE102014015947A1 (en) 2014-10-30 2016-05-19 Mahle International Gmbh Cooling duct cover and piston provided with a cooling channel cover
US10240557B2 (en) 2014-10-30 2019-03-26 Mahle International Gmbh Cooling channel cover and piston provided with a cooling channel cover

Also Published As

Publication number Publication date
US20020178910A1 (en) 2002-12-05
BR0016461A (en) 2002-08-27
US6722263B2 (en) 2004-04-20
EP1238191A1 (en) 2002-09-11
DE50010778D1 (en) 2005-08-25
BR0016461B1 (en) 2008-11-18
WO2001044645A1 (en) 2001-06-21
DE19960913A1 (en) 2001-06-21
JP2003517139A (en) 2003-05-20

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