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WO2012055964A1 - Piston pour un moteur à combustion interne - Google Patents

Piston pour un moteur à combustion interne Download PDF

Info

Publication number
WO2012055964A1
WO2012055964A1 PCT/EP2011/068864 EP2011068864W WO2012055964A1 WO 2012055964 A1 WO2012055964 A1 WO 2012055964A1 EP 2011068864 W EP2011068864 W EP 2011068864W WO 2012055964 A1 WO2012055964 A1 WO 2012055964A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling channel
piston
radius
radially
combustion chamber
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.)
Ceased
Application number
PCT/EP2011/068864
Other languages
German (de)
English (en)
Inventor
Frank Noll
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.)
Federal Mogul Nuernberg GmbH
Original Assignee
Federal Mogul Nuernberg 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 Federal Mogul Nuernberg GmbH filed Critical Federal Mogul Nuernberg GmbH
Priority to EP11775962.1A priority Critical patent/EP2633176A1/fr
Publication of WO2012055964A1 publication Critical patent/WO2012055964A1/fr
Anticipated expiration legal-status Critical
Ceased 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 
    • F02F3/16—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

Definitions

  • the invention relates to a piston for a
  • Piston pin which connects to a connecting rod, to be provided with one or more cooling channels or spaces.
  • DE 10 2006 024 098 AI describes a piston with a cooling channel, of which a so-called
  • Stitch channel is formed in the direction of a ring carrier.
  • Cooling channel at least in sections in the direction of the piston longitudinal axis and at least partially transverse to
  • Piston longitudinal axis wavy Here are mentioned as cross-sectional shapes of the cooling channel, a triangle and a trapezoid with rounded corners.
  • From DE 20 17 925 A is a piston for a
  • Internal combustion engine with a cooling channel which is inclined inwardly in the direction of the piston head and in the direction of the piston head radially outward and in the direction of the piston pin radially inside has a larger radius than at the two remaining corners.
  • the invention has for its object to provide a piston for an internal combustion engine, which is improved in terms of the voltages occurring during operation, in particular in the region of the cooling channel itself.
  • this has at least one at least
  • Sectionally substantially annular cooling channel at least in sections in the direction of
  • Piston longitudinal axis can be wavy and a
  • Cross-section may have, whose dimension is substantially greater in the direction of the piston longitudinal axis than transversely thereto. Furthermore, viewed in cross-section, the cooling channel may be inclined outwards.
  • Cooling channel viewed in cross section, largely as
  • Parallelogram is executed with rounded corners, wherein at the piston pin end end of the obtuse angle
  • Parallelogram is preferably formed radially outward. This means preferably for the piston bottom end of the
  • Cross-section of the cooling channel that here is the obtuse angle radially inward, that is directed to the combustion bowl.
  • the obtuse angle described is usually accompanied by a comparatively large radius.
  • an obtuse angle may not necessarily be identified.
  • the invention can also by the provision of a compared with other areas of the cooling channel larger radius at the piston pin end radially outward and / or on the piston crown side end are realized radially inside.
  • the cross section of the cooling channel according to the invention of a rectangle, whose longer side is substantially parallel to the piston axis. If here the corners of the rectangle are rounded so that larger radii at the piston pin end radially outward and / or provided on the piston bottom side end radially inside, the effects described below can be achieved in the same way.
  • Cross-sectional geometry of the cooling channel has been previously referred to in particular parallelogram.
  • a rectangle is a special form of a parallelogram, so that accordingly a rectangle for describing the cross-sectional geometry of the cooling channel according to the invention can be assumed.
  • the cross-sectional geometry of the Cooling channel (for example, starting from a
  • Parallelogram is largely point-symmetrical.
  • Fig. 1 shows a part of the piston according to the invention in
  • Fig. 1 shows substantially one half of a
  • Piston rings present which may be used in particular in the case of the uppermost piston ring in a ring carrier, which in turn is inserted into the recognizable in Fig. 1 groove.
  • the substantially annular cooling passage 14 is radially inward of that formed by the piston ring grooves Ring field arranged and has long sides 16, which in the case shown at an acute angle to
  • the cross section of the cooling channel can be inclined outwards, for example by about 7 ° to 9 ° and preferably about 7.3 °, and a "height" is measured by way of example taking into account the existing inclination of about 18 mm to 19 mm, and preferably about 18.5 mm and a "width", again measured taking into account the inclination, of about 6 mm to 8 mm, and preferably about 7 mm.
  • the inner diameter of the cooling channel may be about 80 mm to 100 mm, and preferably about 90 mm, and the outer diameter may be about 105 mm to 110 mm, and preferably about 107.5 mm.
  • FIG. 2 Representations of the combustion chamber is located above the cooling channel shown, and shown in FIG. 1, the cooling channel of the right half of the piston is shown. Accordingly, the cross-sectional shape of the embodiment of FIG. 2 results from the square shown in dashed lines, wherein the Rounding radius at the top, piston bottom end radially inward and at the bottom, piston pin end radially outward greater than in the other two corners.
  • Cross-sectional shape of the cooling channel can also be assumed by a rectangle, the longer side extends substantially parallel to the piston axis.
  • the "corners" are
  • Fig. 5 is comparatively similar to that of Fig. 1, wherein it can be seen from the illustration in Fig. 5 that the radially extending, short sides of the parallelogram do not necessarily have to be made outwardly ascending.
  • Cross-sectional geometry of the cooling channel according to the invention does not necessarily have to be assumed by one of the above-mentioned geometric figures. Rather, the advantages of the invention can also be realized by an embodiment in which on the piston bottom end radially inward and / or on the piston pin end radially outward radii Ri and R 3 are formed, which are larger than the other two radii r 2 and r 4th
  • the two radii R 1 , R 3 and the two r 2 , r 4 are approximately the same size.

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)

Abstract

L'invention concerne un piston (10) pour un moteur à combustion interne comportant au moins un canal de refroidissement (14) qui est réalisé au moins par endroits, vu en coupe transversale, en grande partie comme un parallélogramme doté d'angles arrondis. Vu en coupe transversale, le rayon est plus grand sur l'extrémité côté axe de piston du canal de refroidissement (14) radialement à l'extérieur et/ou à l'extrémité côté chambre de combustion du canal de refroidissement (14) radialement à l'intérieur, que sur au moins une autre extrémité du canal de refroidissement (14).
PCT/EP2011/068864 2010-10-29 2011-10-27 Piston pour un moteur à combustion interne Ceased WO2012055964A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11775962.1A EP2633176A1 (fr) 2010-10-29 2011-10-27 Piston pour un moteur à combustion interne

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010043124 DE102010043124A1 (de) 2010-10-29 2010-10-29 Kolben für einen Verbrennungsmotor
DE102010043124.9 2010-10-29

Publications (1)

Publication Number Publication Date
WO2012055964A1 true WO2012055964A1 (fr) 2012-05-03

Family

ID=44872353

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/068864 Ceased WO2012055964A1 (fr) 2010-10-29 2011-10-27 Piston pour un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP2633176A1 (fr)
DE (1) DE102010043124A1 (fr)
WO (1) WO2012055964A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107923299A (zh) * 2015-07-30 2018-04-17 马勒国际有限公司 用于内燃机的活塞

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459253A (en) * 1964-03-25 1969-08-05 Wellworthy Ltd Method of casting pistons
DE2017925A1 (de) 1970-04-15 1971-10-28 Karl Schmidt Gmbh, 7107 Neckarsulm Kolben für Verbrennungskraftmaschinen
FR2529120A1 (fr) * 1982-06-25 1983-12-30 Ae Plc Procede de coulee sous pression et piston forme par sa mise en oeuvre
JPS62126542U (fr) * 1986-01-31 1987-08-11
WO1997048896A1 (fr) * 1996-06-20 1997-12-24 Metal Leve S.A. Indústria E Comércio Piston pour moteur a explosion
EP1099845A2 (fr) * 1999-11-12 2001-05-16 KS Kolbenschmidt GmbH Piston avec une connexion entre un conduit de refroidissement et un alésage d'un axe de piston
GB2361517A (en) * 1999-04-19 2001-10-24 Seneca Tech Ltd Piston and connecting rod retention
DE10113639A1 (de) 2001-03-21 2002-09-26 Daimler Chrysler Ag Kühlkanal für einen flüssigkeitsgekühlten Kolben
KR20030018364A (ko) * 2001-08-28 2003-03-06 현대자동차주식회사 피스톤 핀-보스의 윤활을 위한 오일공급구조
WO2005024217A1 (fr) * 2003-09-02 2005-03-17 Mahle Gmbh Piston pour moteur a combustion
WO2007031109A1 (fr) * 2005-09-17 2007-03-22 Ks Kolbenschmidt Gmbh Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction
DE102006024098A1 (de) 2006-05-23 2007-12-20 Ks Kolbenschmidt Gmbh Kolben mit einer Ringträger-Kühlkanal-Kombination
DE102008031863A1 (de) * 2008-07-05 2010-01-07 Mahle International Gmbh Einlegeteil für einen Kolben eines Verbrennungsmotors sowie mit dem Einlegeteil versehener Kolben oder Kolbenkopf

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2939371B2 (ja) * 1991-09-03 1999-08-25 マツダ株式会社 学習制御自動車
GB9909034D0 (en) * 1999-04-19 1999-06-16 Seneca Tech Ltd Piston coolant path

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3459253A (en) * 1964-03-25 1969-08-05 Wellworthy Ltd Method of casting pistons
DE2017925A1 (de) 1970-04-15 1971-10-28 Karl Schmidt Gmbh, 7107 Neckarsulm Kolben für Verbrennungskraftmaschinen
FR2529120A1 (fr) * 1982-06-25 1983-12-30 Ae Plc Procede de coulee sous pression et piston forme par sa mise en oeuvre
JPS62126542U (fr) * 1986-01-31 1987-08-11
WO1997048896A1 (fr) * 1996-06-20 1997-12-24 Metal Leve S.A. Indústria E Comércio Piston pour moteur a explosion
GB2361517A (en) * 1999-04-19 2001-10-24 Seneca Tech Ltd Piston and connecting rod retention
EP1099845A2 (fr) * 1999-11-12 2001-05-16 KS Kolbenschmidt GmbH Piston avec une connexion entre un conduit de refroidissement et un alésage d'un axe de piston
DE10113639A1 (de) 2001-03-21 2002-09-26 Daimler Chrysler Ag Kühlkanal für einen flüssigkeitsgekühlten Kolben
KR20030018364A (ko) * 2001-08-28 2003-03-06 현대자동차주식회사 피스톤 핀-보스의 윤활을 위한 오일공급구조
WO2005024217A1 (fr) * 2003-09-02 2005-03-17 Mahle Gmbh Piston pour moteur a combustion
WO2007031109A1 (fr) * 2005-09-17 2007-03-22 Ks Kolbenschmidt Gmbh Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction
DE102006024098A1 (de) 2006-05-23 2007-12-20 Ks Kolbenschmidt Gmbh Kolben mit einer Ringträger-Kühlkanal-Kombination
DE102008031863A1 (de) * 2008-07-05 2010-01-07 Mahle International Gmbh Einlegeteil für einen Kolben eines Verbrennungsmotors sowie mit dem Einlegeteil versehener Kolben oder Kolbenkopf

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107923299A (zh) * 2015-07-30 2018-04-17 马勒国际有限公司 用于内燃机的活塞
JP2018523051A (ja) * 2015-07-30 2018-08-16 マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツングＭＡＨＬＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ 内燃エンジン用ピストン
CN107923299B (zh) * 2015-07-30 2020-07-03 马勒国际有限公司 用于内燃机的活塞

Also Published As

Publication number Publication date
EP2633176A1 (fr) 2013-09-04
DE102010043124A1 (de) 2012-05-03

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