EP1738066A1 - Capot de canal de refroidissement destine a un piston d'un moteur a combustion interne - Google Patents

Capot de canal de refroidissement destine a un piston d'un moteur a combustion interne

Info

Publication number
EP1738066A1
EP1738066A1 EP05737984A EP05737984A EP1738066A1 EP 1738066 A1 EP1738066 A1 EP 1738066A1 EP 05737984 A EP05737984 A EP 05737984A EP 05737984 A EP05737984 A EP 05737984A EP 1738066 A1 EP1738066 A1 EP 1738066A1
Authority
EP
European Patent Office
Prior art keywords
piston
spring plate
radially
cooling duct
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.)
Granted
Application number
EP05737984A
Other languages
German (de)
English (en)
Other versions
EP1738066B1 (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 EP1738066A1 publication Critical patent/EP1738066A1/fr
Application granted granted Critical
Publication of EP1738066B1 publication Critical patent/EP1738066B1/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 
    • F02F3/16—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 
    • F02F3/16—Pistons  having cooling means

Definitions

  • the invention relates to a cooling duct cover for a piston of an internal combustion engine according to the preamble of claim 1.
  • cooling channel cover consisting of two semicircular disc spring halves
  • both axially and radially directed forces are exerted on the annular wall 24.
  • These forces are maximum at the butt ends of the disc spring halves, so that the axial forces in this area lead to a non-sinusoidal deformation of the piston ring grooves, which the piston rings housed therein cannot follow, which in particular increases the oil consumption of an internal combustion engine equipped with the piston in question.
  • the radially directed and maximum forces at the abutting ends of the plate spring halves lead here to an oval cross-section deformation of the ring wall 24, which entails the risk of piston seizures.
  • the invention is based on the problem of avoiding the disadvantages of the prior art mentioned.
  • a useful embodiment of the invention is the subject of the dependent claim.
  • FIG. 1 shows a spring plate according to the prior art for closing the cooling channel of a piston for an internal combustion engine in section
  • FIG. 2 shows a spring plate according to the present invention in plan view
  • FIG. 3 shows the spring plate according to the invention in section along the line III-III in FIG 2 and Fig. 4, the spring plate according to the invention after installation in a piston.
  • Figures 2 and 4 show an annular spring plate 1 for closing the cooling channel 20 of a piston 8 for an internal combustion engine, which consists of two semicircular spring plate halves 2 and 3.
  • Each of the two spring plate halves 2, 3 has a molded part 4 and 5, the purpose of which is to secure the spring plate 1 installed in the piston 8 against rotation.
  • each of the two spring plate halves 2, 3 is provided with an opening 6 and 7 in order to introduce or discharge oil into the cooling channel.
  • Fig. 3 shows a section through the spring plate 1 along the line III-IH in Fig. 2. The formation 4 and the opening 7 can be seen.
  • the spring plate 1 has the shape of a flat funnel in the relaxed state.
  • the spring plate 1 is shown after installation in the piston 8. It can be seen that the spring plate 1 has a flat position, i.e. that it has undergone a torsion with respect to the funnel-shaped position shown in FIG. 3.
  • the torsional stress generated in this way in the spring plate 1 has the effect that its radially inner edge region 16 on the top of the piston head side, forming a first support 10, of a radially outward projection 17 of the piston base body 14 and its radially outer edge region 18 on one of a step-shaped recess 19 of the underside 15 of the ring section 13 facing away from the piston crown rests under pre-tension, and that the spring plate 1 is fixed in the piston 8.
  • the spring plate 1 has an outer radius 11 (FIG. 2) which is dimensioned such that a gap 12 (FIG. 4) is formed between the spring plate 1 and the piston 8. This ensures that damage to the spring plate 1 and the piston 8 in the area of the gap 12 is avoided in the case of relative movements between the piston 8 and the spring plate 1. In addition, the areas of the supports 9 and 10 are so large that there is minimal wear here in the case of relative movements between the piston 8 and the spring plate 1.
  • the two spring plate halves 2 and 3 are placed on the underside 15 of the ring section 13 facing away from the piston crown, are exposed on their radial inside to an axial force acting in the direction of the piston crown 21 and thereby set in torsion so far that the radially inner edge region 16 of the spring plate halves 2, 3 comes to lie above the first support 10. Then the spring plate halves 2, 3 are pushed into their position shown in FIG. 4 by means of a radially inward force.

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 capot de canal de refroidissement destiné à un piston (8) d'un moteur à combustion interne, se présentant sous la forme d'une tôle ressort (1) dimensionnée pour éviter toute usure dans la zone de l'appui (9), de telle manière qu'une fente périphérique (12) est créée entre le côté frontal, radialement extérieur, de la tôle ressort (1), et la limite radialement extérieure de la cavité en étages (19).
EP05737984.4A 2004-04-20 2005-04-19 Capot de canal de refroidissement destine a un piston d'un moteur a combustion interne Active EP1738066B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004019011A DE102004019011A1 (de) 2004-04-20 2004-04-20 Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors
PCT/DE2005/000717 WO2005103473A1 (fr) 2004-04-20 2005-04-19 Capot de canal de refroidissement destine a un piston d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1738066A1 true EP1738066A1 (fr) 2007-01-03
EP1738066B1 EP1738066B1 (fr) 2018-01-24

Family

ID=34965970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05737984.4A Active EP1738066B1 (fr) 2004-04-20 2005-04-19 Capot de canal de refroidissement destine a un piston d'un moteur a combustion interne

Country Status (8)

Country Link
US (1) US7415959B2 (fr)
EP (1) EP1738066B1 (fr)
JP (1) JP4598059B2 (fr)
KR (1) KR101246395B1 (fr)
CN (1) CN1977103A (fr)
BR (1) BRPI0510067B1 (fr)
DE (1) DE102004019011A1 (fr)
WO (1) WO2005103473A1 (fr)

Families Citing this family (14)

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Publication number Priority date Publication date Assignee Title
US7762227B2 (en) * 2008-02-19 2010-07-27 Federal Mogul Corporation Coolable piston for internal combustion engine
US8347842B2 (en) * 2008-02-19 2013-01-08 Federal-Mogul Corporation Coolable piston for internal combustion engine
DE102008055848A1 (de) * 2008-11-04 2010-05-06 Ks Kolbenschmidt Gmbh Kühlkanalkolben einer Brennkraftmaschine mit einem Verschlusselement, das den Kühlkanal verschließt
US8601996B2 (en) * 2009-05-08 2013-12-10 Caterpillar Inc. Single piece piston body for an internal combustion engine
US9464592B2 (en) 2011-04-18 2016-10-11 Achates Power, Inc. Piston thermal management in an opposed-piston engine
CN102330584B (zh) * 2011-08-05 2012-12-19 无锡开普动力有限公司 一种用于往复活塞式内燃机活塞连杆的冷却润滑结构
DE102011115847A1 (de) 2011-10-13 2013-04-18 Daimler Ag Kühlkanalkolben und Verfahren zu dessen Herstellung
DE102012014195A1 (de) * 2012-07-18 2014-01-23 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US9243709B2 (en) 2013-03-14 2016-01-26 Mahle International Gmbh Welded piston assembly
CN104214002A (zh) * 2013-05-22 2014-12-17 艾克莫特公司 用于活塞的热障
DE102013009164A1 (de) * 2013-05-31 2014-12-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102014015947A1 (de) 2014-10-30 2016-05-19 Mahle International Gmbh Kühlkanalabdeckung sowie mit einer Kühlkanalabdeckung versehener Kolben
DE102021200419A1 (de) 2021-01-18 2022-07-21 Mahle International Gmbh Kolben für eine Brennkraftmaschine
US11946434B1 (en) 2023-02-08 2024-04-02 Innio Jenbacher Gmbh & Co Og System and method for enclosing piston cooling gallery

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DE252638C (fr)
DD252638A1 (de) * 1986-09-17 1987-12-23 Ifa Motorenwerke Spritzoelgekuehlter eisenkolben fuer hubkolbenbrennkraftmaschinen
BR9005371A (pt) * 1990-10-18 1992-06-16 Metal Leve Sa Processo de fabricacao de embolo com galeria de refrigeracao
DE4039751A1 (de) 1990-12-13 1992-06-17 Mahle Gmbh Mehrteililger, gekuehlter kolben fuer verbrennungsmotoren
BR9107164A (pt) 1990-12-13 1994-03-01 Mahle Gmbh Embolo refrigerado de partes multiplas para motores de combustao interna
DE4208037C2 (de) * 1992-03-13 1998-03-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE4430137B4 (de) * 1994-08-25 2004-07-22 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE4446726A1 (de) * 1994-12-24 1996-06-27 Mahle Gmbh Verfahren zur Herstellung eines einteiligen Kühlkanalkolbens
KR970044451A (ko) * 1995-12-30 1997-07-26 전성원 차량용 피스톤의 냉각장치
KR970044443A (ko) * 1995-12-30 1997-07-26 전성원 차량용 피스톤의 냉각 장치
DE19720958B4 (de) * 1997-05-17 2007-07-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
JP3873157B2 (ja) * 1997-11-13 2007-01-24 カシオ計算機株式会社 電子カメラ装置および撮像方法
DE19926568A1 (de) * 1999-06-11 2000-12-14 Mahle Gmbh Gekühlter Kolben für Verbrennungsmotoren
DE19926567A1 (de) * 1999-06-11 2000-12-14 Mahle Gmbh Gekühlter Kolben für Verbrennungsmotoren
DE19960913A1 (de) * 1999-12-17 2001-06-21 Mahle Gmbh Untere Abdeckung eines Kühlraumes für Kolben von Verbrennungsmotoren
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DE10132446A1 (de) * 2001-07-04 2003-01-30 Ks Kolbenschmidt Gmbh Kolben, bestehend aus zusammengeschweißtem Ober- und Unterteil
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DE10244511A1 (de) * 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
US6938604B2 (en) * 2003-10-06 2005-09-06 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005103473A1 *

Also Published As

Publication number Publication date
JP2007533904A (ja) 2007-11-22
KR101246395B1 (ko) 2013-03-21
EP1738066B1 (fr) 2018-01-24
US7415959B2 (en) 2008-08-26
BRPI0510067A (pt) 2007-10-16
BRPI0510067B1 (pt) 2018-09-04
CN1977103A (zh) 2007-06-06
WO2005103473A1 (fr) 2005-11-03
KR20070009683A (ko) 2007-01-18
JP4598059B2 (ja) 2010-12-15
US20070209614A1 (en) 2007-09-13
DE102004019011A1 (de) 2005-11-17

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