WO2001009503A1 - Piston for an internal combustion engine - Google Patents

Piston for an internal combustion engine Download PDF

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Publication number
WO2001009503A1
WO2001009503A1 PCT/EP2000/007171 EP0007171W WO0109503A1 WO 2001009503 A1 WO2001009503 A1 WO 2001009503A1 EP 0007171 W EP0007171 W EP 0007171W WO 0109503 A1 WO0109503 A1 WO 0109503A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling channel
opening
piston
cooling
coolant
Prior art date
Application number
PCT/EP2000/007171
Other languages
German (de)
French (fr)
Inventor
Emmerich Ottliczky
Gregor Müller
Wolfgang Hanke
Original Assignee
Ks Kolbenschmidt 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
Family has litigation
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Application filed by Ks Kolbenschmidt Gmbh filed Critical Ks Kolbenschmidt Gmbh
Priority to DE50001569T priority Critical patent/DE50001569D1/en
Priority to EP00951450A priority patent/EP1200725B1/en
Priority to PL00350764A priority patent/PL350764A1/en
Publication of WO2001009503A1 publication Critical patent/WO2001009503A1/en

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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

Definitions

  • the invention relates to a piston for an internal combustion engine with an annularly arranged cooling channel, which consists of a left and a right cooling channel half and which has a first and a second opening, cooling oil through a cooling oil nozzle as a free oil jet into the first opening and thus into the cooling channel can be supplied and can be discharged through the second opening.
  • the cooling oil is injected into a first opening, the inflow opening, by means of a cooling oil jet nozzle, is then distributed in the cooling channel and is discharged through a second opening, the outflow opening. Because the cooling oil nozzle can be set at a certain angle with respect to the piston shaft, the cooling oil is not injected in equal parts into the left and right half of the cooling channel with respect to the inlet opening. This adversely affects the cooling effect of the cooling oil flow.
  • the object of the present invention is to improve a piston of the type described above in such a way that a uniform cooling effect is achieved in the entire cooling channel.
  • the coolant flow is divided when it hits the bottom surface of the cooling channel and is introduced in equal parts into the left and right cooling channel halves.
  • the rib element can be arranged offset with respect to the center of the inlet opening.
  • a particularly advantageous embodiment results when the first and the second opening have the same dimensions and are arranged symmetrically in the cooling channel, such that both the first and the second opening as inlet or.
  • Discharge opening can be used, the rib element being arranged on the left and once on the right in relation to the pin bore center line of the piston in the plan view of the cooling channel plane. In this way, the piston can be used universally and does not need to be aligned with respect to an opening.
  • Fig. 1 is a perspective view of the piston according to the invention in section and
  • Fig. 2 is a bottom view of the piston.
  • a piston 1 has in its piston head area an annularly arranged cooling channel 2, which consists of two cooling channel halves 3 and 4.
  • This cooling channel has two openings 5, 6, which can optionally serve as inlet or outlet openings.
  • coolant is injected into the cooling channel 8 through a coolant nozzle 7 (see FIG. 2) and reaches the cooling channel 2 via the associated opening 5 and can flow out via the opening 6 and the associated channel 9.
  • the coolant nozzle 7 is set at a certain angle with respect to a piston skirt 10, a rib element 11 extending in the radial direction is formed in the bottom surface of the cooling channel 2 in the region of the inlet opening 5, the position of the rib element 11 with respect to the center point the inlet opening 5 depends on the orientation of the coolant nozzle 7 such that the coolant flow is equally divided into the left and right cooling channel halves 3, 4.
  • the first and second openings 5, 6 have the same dimensions and are arranged symmetrically in the cooling channel 2, such that both the first and the second openings 5, 6 serve as inlet or Drain opening can be used, the rib member 11 being arranged in the top view of the cooling channel plane once on the left and once on the right with respect to the pin bore center line of the piston.

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  • 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

The invention relates to a piston for an internal combustion engine with an annular cooling channel that consists of a left and a right cooling channel half and that comprises a first and a second opening. Cooling oil is feed as a free oil jet to the first opening by means of a coolant nozzle, so that it can be fed to the cooling channel and discharged through the second opening. A rib-shaped element extends in a radial direction of the bottom surface of the cooling channel in the area of the inlet opening. The position of said rib-shaped element with respect to the center of the inlet opening depends on the orientation of the coolant nozzle in such a manner that the flow of coolant is fed to the left and right cooling channel half in equal portions.

Description

B E S C H R E I B U N G DESCRIPTION
Kolben für einen VerbrennungsmotorPistons for an internal combustion engine
Die Erfindung betrifft einen Kolben für einen Verbrennungsmotor mit einem ringförmig angeordneten Kühlkanal, der aus einer linken und einer rechten Kühlkanalhälfte besteht und der eine erste und eine zweite Öffnung aufweist, wobei Kühlöl durch eine Kühlöldüse als freier Olstrahl in die erste Öffnung und damit in den Kühlkanal zuführbar ist und durch die zweite Öffnung abführbar ist.The invention relates to a piston for an internal combustion engine with an annularly arranged cooling channel, which consists of a left and a right cooling channel half and which has a first and a second opening, cooling oil through a cooling oil nozzle as a free oil jet into the first opening and thus into the cooling channel can be supplied and can be discharged through the second opening.
Derartige Kolben sind hinlänglich bekannt. Das Kühlöl wird mittels einer Kühlölstrahl- düse in eine erste Öffnung, die Zuflußöffnung, gespritzt, verteilt sich dann in dem Kühlkanal und wird durch eine zweite Öffnung, die Abflußöffnung, abgeführt. Dadurch, daß die Kühlöldüse in einem bestimmten Winkel in Bezug auf den Kolben- schaft angestellt sein kann, wird das Kühlöl nicht zu gleichen Teilen in die jeweils in Bezug auf die Zulauföffnung linke und rechte Kühlkanalhälfte gespritzt. Dies wirkt sich nachteilig auf die Kühlwirkung des Kühlölstroms aus.Such pistons are well known. The cooling oil is injected into a first opening, the inflow opening, by means of a cooling oil jet nozzle, is then distributed in the cooling channel and is discharged through a second opening, the outflow opening. Because the cooling oil nozzle can be set at a certain angle with respect to the piston shaft, the cooling oil is not injected in equal parts into the left and right half of the cooling channel with respect to the inlet opening. This adversely affects the cooling effect of the cooling oil flow.
Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen Kolben der vorstehend beschriebenen Art dahingehend zu verbessern, daß eine gleichmäßige Kühlwirkung im gesamten Kühlkanal erreicht wird.Proceeding from this, the object of the present invention is to improve a piston of the type described above in such a way that a uniform cooling effect is achieved in the entire cooling channel.
Diese Aufgabe wird durch einen Kolben der genannten Art erfindungsgemäß dadurch gelöst, daß in der Bodenfläche des Kühlkanals im Bereich der Zulauföffnung ein in radiale Richtung verlaufendes Rippenelement angeformt ist, wobei die Lage des Rippenelementes in Bezug auf den Mittelpunkt der Zulauföffnung abhängt von der Ausrichtung der Kühlöldüse derart, daß der Kühlmittelstrom zu gleichen Teilen in die linke und rechte Kühlkanalhälfte eingeleitet wird.This object is achieved according to the invention by a piston of the type mentioned in that a rib element running in the radial direction is formed in the bottom surface of the cooling channel in the region of the inlet opening, the position of the rib element with respect to the center of the inlet opening depending on the orientation of the cooling oil nozzle such that the coolant flow is introduced equally into the left and right half of the cooling channel.
Auf diese Weise wird also erreicht, daß der Kühlmittelstrom beim Auftreffen auf die Bodenfläche des Kühlkanals geteilt wird und zu gleichen Teilen in die linke und rechte Kühlkanalhälfte eingeleitet wird. Je nach dem inwieweit die Kühlölstrahldüse in Bezug auf den Kolbenschaft angestellt wird, kann das Rippenelement versetzt in Bezug auf den Mittelpunkt der Zulauföffnung angeordnet werden.In this way it is achieved that the coolant flow is divided when it hits the bottom surface of the cooling channel and is introduced in equal parts into the left and right cooling channel halves. Depending on the extent to which the cooling oil jet nozzle in With respect to the piston skirt, the rib element can be arranged offset with respect to the center of the inlet opening.
Eine besonders vorteilhafte Ausführungsform ergibt sich, wenn die erste und die zweite Öffnung gleiche Abmessungen aufweisen und symmetrisch im Kühlkanal angeordnet sind, derart, daß sowohl die erste als auch die zweite Öffnung als Zulaufbzw. Abflußöffnung einsetzbar sind, wobei das Rippenelement in der Draufsicht auf die Kühlkanalebene einmal links und einmal rechts in Bezug auf die Bolzenbohrungmittellinie des Kolbens angeordnet. Auf diese Weise ist der Kolben universell einsetzbar und braucht nicht hinsichtlich einer Öffnung ausgerichtet zu werden.A particularly advantageous embodiment results when the first and the second opening have the same dimensions and are arranged symmetrically in the cooling channel, such that both the first and the second opening as inlet or. Discharge opening can be used, the rib element being arranged on the left and once on the right in relation to the pin bore center line of the piston in the plan view of the cooling channel plane. In this way, the piston can be used universally and does not need to be aligned with respect to an opening.
Die Erfindung wird anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert.The invention is explained in more detail using an exemplary embodiment shown in the drawing.
Es zeigt:It shows:
Fig. 1 eine perspektivische Ansicht des erfindungsgemäßen Kolbens im Schnitt undFig. 1 is a perspective view of the piston according to the invention in section and
Fig. 2 eine Unteransicht des Kolbens.Fig. 2 is a bottom view of the piston.
Ein Kolben 1 weist in seinem Kolbenkopfbereich einen ringförmig angeordneten Kühlkanal 2, der aus zwei Kühlkanalhälften 3 und 4 besteht, auf. Dieser Kühlkanal besitzt zwei Öffnungen 5, 6, die wahlweise als Zulauf- oder Abflußöffnungen dienen können. Hierzu wird durch eine Kühlmitteldüse 7 (siehe Figur 2) Kühlmittel in den Kühlkanal 8 gespritzt und gelangt über die zugehörige Öffnung 5 in den Kühlkanal 2 und kann über die Öffnung 6 und den zugehörigen Kanal 9 abfließen.A piston 1 has in its piston head area an annularly arranged cooling channel 2, which consists of two cooling channel halves 3 and 4. This cooling channel has two openings 5, 6, which can optionally serve as inlet or outlet openings. For this purpose, coolant is injected into the cooling channel 8 through a coolant nozzle 7 (see FIG. 2) and reaches the cooling channel 2 via the associated opening 5 and can flow out via the opening 6 and the associated channel 9.
Da die Kühlmitteldüse 7 jedoch in einem bestimmte Winkel in Bezug auf einen Kolbenschaft 10 angestellt ist, ist in der Bodenfläche des Kühlkanals 2 im Bereich der Zulauföffnung 5 ein in radiale Richtung verlaufendes Rippenelement 11 angeformt, wobei die Lage des Rippenelementes 11 in Bezug auf den Mittelpunkt der Zulauföff- nung 5 abhängt von der Ausrichtung der Kühlmitteldüse 7 derart, daß der Kühlmittelstrom zu gleichen Teilen in die linke und rechte Kühlkanalhälfte 3, 4 eingeleitet wird.However, since the coolant nozzle 7 is set at a certain angle with respect to a piston skirt 10, a rib element 11 extending in the radial direction is formed in the bottom surface of the cooling channel 2 in the region of the inlet opening 5, the position of the rib element 11 with respect to the center point the inlet opening 5 depends on the orientation of the coolant nozzle 7 such that the coolant flow is equally divided into the left and right cooling channel halves 3, 4.
Um den erfindungsgemäßen Kolben 1 universell einsetzen zu können, weisen die erste und die zweite Öffnung 5, 6 gleiche Abmessungen auf und sind symmetrisch im Kühlkanal 2 angeordnet, derart, daß sowohl die erste als auch die zweite Öffnung 5, 6 als Zulauf- bzw. Abflußöffnung einsetzbar sind, wobei das Rippenelement 11 in der Draufsicht auf die Kühlkanalebene einmal links und einmal rechts in Bezug auf die Bolzenbohrungmittellinie des Kolbens angeordnet. In order to be able to use the piston 1 according to the invention universally, the first and second openings 5, 6 have the same dimensions and are arranged symmetrically in the cooling channel 2, such that both the first and the second openings 5, 6 serve as inlet or Drain opening can be used, the rib member 11 being arranged in the top view of the cooling channel plane once on the left and once on the right with respect to the pin bore center line of the piston.

Claims

PATENTANSPRÜCHE
1.1.
Kolben für einen Verbrennungsmotor mit einem ringförmig angeordneten Kühlkanal (2), der aus einer linken und einer rechten Kühlkanalhälfte (3, 4) besteht und der eine erste und eine zweite Öffnung (5, 6) aufweist, wobei Kühlöl durch eine Kühlmitteldüse (7) als freier Olstrahl in die erste Öffnung (5) und damit in den Kühlkanal (2) zuführbar ist und durch die zweite Öffnung (6) abführbar ist, dadurch gekennzeichnet, daß in der Bodenfläche des Kühlkanals (2) im Bereich der Zulauföffnung (5) ein in radiale Richtung verlaufendes Rippenelement (11 ) angeordnet ist, wobei die Lage des Rippenelementes (1 1 ) in Bezug auf den Mittelpunkt der Zulauföffnung (5) abhängt von der Ausrichtung der Kühlmitteldüse (7) derart, daß der Kühlmittelstrom zu gleichen Teilen in die linke und rechte Kühlkanalhälfte (3, 4) eingeleitet wird.Piston for an internal combustion engine with an annularly arranged cooling channel (2), which consists of a left and a right cooling channel half (3, 4) and which has a first and a second opening (5, 6), cooling oil through a coolant nozzle (7) can be fed as a free oil jet into the first opening (5) and thus into the cooling channel (2) and can be discharged through the second opening (6), characterized in that in the bottom surface of the cooling channel (2) in the region of the inlet opening (5) a rib element (11) extending in the radial direction is arranged, the position of the rib element (11) with respect to the center of the inlet opening (5) depending on the orientation of the coolant nozzle (7) in such a way that the coolant flow into the left and right cooling channel half (3, 4) is introduced.
2.Second
Kolben nach Anspruch 1 , dadurch gekennzeichnet, daß die erste und die zweite Öffnung (5, 6) gleiche Abmessungen aufweisen und symmetrisch im Kühlkanal (2 ) angeordnet sind, derart, daß sowohl die erste als auch die zweite Öffnung (5, 6) als Zulauf- bzw. Abflußöffnung einsetzbar sind, wobei das Rippenelement (11 ) in der Draufsicht auf die Kühlkanalebene einmal links und einmal rechts in Bezug auf die Bolzenbohrungmittellinie des Kolbens angeordnet. Piston according to claim 1, characterized in that the first and the second opening (5, 6) have the same dimensions and are arranged symmetrically in the cooling channel (2), such that both the first and the second opening (5, 6) as Inlet or outlet opening can be used, the rib element (11) being arranged on the left and once on the right in relation to the pin bore center line of the piston in the plan view of the cooling channel plane.
PCT/EP2000/007171 1999-07-30 2000-07-26 Piston for an internal combustion engine WO2001009503A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50001569T DE50001569D1 (en) 1999-07-30 2000-07-26 PISTON FOR A COMBUSTION ENGINE
EP00951450A EP1200725B1 (en) 1999-07-30 2000-07-26 Piston for an internal combustion engine
PL00350764A PL350764A1 (en) 1999-07-30 2000-07-26 Piston for an internal combustion engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19935399A DE19935399A1 (en) 1999-07-30 1999-07-30 Pistons for an internal combustion engine
DE19935399.9 1999-07-30

Publications (1)

Publication Number Publication Date
WO2001009503A1 true WO2001009503A1 (en) 2001-02-08

Family

ID=7916326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/007171 WO2001009503A1 (en) 1999-07-30 2000-07-26 Piston for an internal combustion engine

Country Status (4)

Country Link
EP (1) EP1200725B1 (en)
DE (2) DE19935399A1 (en)
PL (1) PL350764A1 (en)
WO (1) WO2001009503A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7748361B2 (en) 2004-09-09 2010-07-06 Federal-Mogul Nurnberg Gmbh Piston for a combustion engine, and combustion engine
US8171338B2 (en) 2010-05-18 2012-05-01 Vmware, Inc. Method and system for enabling checkpointing fault tolerance across remote virtual machines
US8898518B2 (en) 2010-05-18 2014-11-25 Vmware, Inc. Method and system for enabling checkpointing fault tolerance across remote virtual machines

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10244513A1 (en) * 2002-09-25 2004-04-08 Mahle Gmbh Multi-part cooled piston for an internal combustion engine and method for its production
DE102006056011A1 (en) * 2006-11-28 2008-05-29 Ks Kolbenschmidt Gmbh Liquid-cooled piston for e.g. diesel internal-combustion engine, has medium in free jet of nozzles entering into openings, where jet is directed parallel to longitudinal axis of piston, and lower side loaded with medium by jet
DE102010055029A1 (en) * 2009-12-18 2012-05-10 Ks Kolbenschmidt Gmbh Cooling passage piston for internal combustion engine, has cooling passage comprising incidence surface that is vertically aligned to beam through inlet opening in cooling passage during movement of piston
DE102013013962A1 (en) 2013-08-23 2015-02-26 Mahle International Gmbh Assembly of a piston and a Anspritzdüse for an internal combustion engine
CN111535936A (en) * 2020-06-29 2020-08-14 安徽江淮汽车集团股份有限公司 Engine piston

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189010A (en) * 1963-11-21 1965-06-15 Continental Aviat & Eng Corp Piston for internal combustion engine
GB1096826A (en) * 1964-06-29 1967-12-29 Specialloid Ltd Piston, e.g. for an internal combustion engine or compressor
DE19810937C1 (en) * 1998-03-13 1999-11-25 Daimler Chrysler Ag Pistons for an internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3189010A (en) * 1963-11-21 1965-06-15 Continental Aviat & Eng Corp Piston for internal combustion engine
GB1096826A (en) * 1964-06-29 1967-12-29 Specialloid Ltd Piston, e.g. for an internal combustion engine or compressor
DE19810937C1 (en) * 1998-03-13 1999-11-25 Daimler Chrysler Ag Pistons for an internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7748361B2 (en) 2004-09-09 2010-07-06 Federal-Mogul Nurnberg Gmbh Piston for a combustion engine, and combustion engine
US8171338B2 (en) 2010-05-18 2012-05-01 Vmware, Inc. Method and system for enabling checkpointing fault tolerance across remote virtual machines
US8898518B2 (en) 2010-05-18 2014-11-25 Vmware, Inc. Method and system for enabling checkpointing fault tolerance across remote virtual machines

Also Published As

Publication number Publication date
PL350764A1 (en) 2003-01-27
EP1200725B1 (en) 2003-03-26
DE19935399A1 (en) 2001-02-01
DE50001569D1 (en) 2003-04-30
EP1200725A1 (en) 2002-05-02

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