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EP1819920A1 - Piston d'un moteur a combustion interne - Google Patents

Piston d'un moteur a combustion interne

Info

Publication number
EP1819920A1
EP1819920A1 EP05815847A EP05815847A EP1819920A1 EP 1819920 A1 EP1819920 A1 EP 1819920A1 EP 05815847 A EP05815847 A EP 05815847A EP 05815847 A EP05815847 A EP 05815847A EP 1819920 A1 EP1819920 A1 EP 1819920A1
Authority
EP
European Patent Office
Prior art keywords
piston
ring element
base body
combustion engine
piston head
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
EP05815847A
Other languages
German (de)
English (en)
Other versions
EP1819920B1 (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 International GmbH
Original Assignee
Mahle International 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
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=35911068&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1819920(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP1819920A1 publication Critical patent/EP1819920A1/fr
Application granted granted Critical
Publication of EP1819920B1 publication Critical patent/EP1819920B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • 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 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • 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
    • 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 
    • F02F3/26—Pistons  having combustion chamber in piston head

Definitions

  • the invention relates to a piston for an internal combustion engine according to the preamble of claim.
  • a piston for an internal combustion engine in whose piston bottom side edge region a closed ring element is arranged, which is connected to the main body of the piston by means of a high temperature resistant adhesive, and its purpose is a hub side arranged for this purpose ring carrier To fix ceramic.
  • a ceramic material is chosen here for the purpose of utilizing this material's own thermal insulation effect and to reduce the temperature-induced expansion of the ring carrier, which is in contact with the thermally highly stressed ring element and thus is itself exposed to a very large thermal load.
  • this method of avoiding temperature-induced damage to the piston due to excessive thermal load of individual piston parts is very expensive and has the disadvantage of significantly increasing the cost of production of the piston.
  • the cooling channel which can be introduced in a simple manner between the piston main body and the ring element, ensures good cooling of both the ring spar tie as well as the thermally very highly loaded edge of the combustion bowl and thus for a high thermal load capacity of the piston according to the invention.
  • FIG. 1 shows a piston for an internal combustion engine with a ring element according to the invention in a two-half sectional image showing two offset by 90 ° longitudinal sections of the piston
  • Fig. 2 is an enlarged view of the section through the edge region of the piston crown with the ring element.
  • FIG. 1 shows a piston 1 for an internal combustion engine in a sectional view consisting of two halves, whose left half represents a section of the piston 1 along a longitudinal axis 2 of a hub bore 3 and the right half of which is offset by 90 ° relative to the piston 1.
  • the piston 1 consists of a substantially cylindrical base body 4, one end face of which forms the piston crown 5.
  • a closed ring element 6 is arranged in the central region of the piston head 5.
  • a combustion bowl 7 is formed in the central region of the piston head 5.
  • the base body 4 on its side facing away from the piston bottom 5 pin bosses 8 for the hub bores 3 and the pin bosses 8 interconnecting shaft elements 9.
  • the ring member 6 has on its radially outer circumferential surface 10 an annular groove 1 1 for a compression ring, not shown in the figure. Below this, a second annular groove 13 is arranged in the lateral surface 12 of the base body 4, followed by an oil ring groove 14 on the bolt hub side.
  • annular, closed cooling channel 15 is arranged, which partly by a molded-in in the base body 4 recess 16 and partly formed by a molded-in in the ring member 6 recess 17.
  • cooling oil is in the cooling passage 15 and derived from it again.
  • the base body 4 is made of aluminum, wherein initially in the forging process, a blank is produced, which is given by means of a machining production process (turning, milling) the final shape.
  • the ring element 6 is produced by casting from Niresist, wherein also first a blank is produced, which is given by means of a machining production process, the mold shown in Fig. 1.
  • Nires is an austenitic cast iron mixed with nickel, manganese, copper and chromium as alloy components.
  • the ring member 6 is connected to the base body 4 by means of a high temperature resistant adhesive.
  • FIG. 2 shows in an enlarged view the piston bottom side edge region of the piston 1 with the ring element 6, with the cooling channel 15 formed by the ring element 6 and the main body 4, and with the ring part 20 partly arranged in the ring element 6 and partly in the main body 4.

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 ) destiné à un moteur à combustion interne et comprenant un élément annulaire (6) situé sur la bordure radialement externe du fond de piston (5), fermé et relié au corps de base de piston (4) par une colle résistante à haute température. Ce corps de base (4) est réalisé en aluminium forgé et l'élément annulaire (6) en resist de Ni. En outre, un canal de refroidissement (15) annulaire fermé doté d'orifices destinés à l'admission et à l'évacuation d'huile de refroidissement, est placé entre le corps de base (4) et un élément annulaire (6). On obtient ainsi un piston (1) de construction simple, de production économique et résistant aux températures élevées.
EP05815847A 2004-11-30 2005-11-28 Piston d'un moteur a combustion interne Revoked EP1819920B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004057558A DE102004057558A1 (de) 2004-11-30 2004-11-30 Kolben für einen Verbrennungsmotor
PCT/DE2005/002141 WO2006058522A1 (fr) 2004-11-30 2005-11-28 Piston d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1819920A1 true EP1819920A1 (fr) 2007-08-22
EP1819920B1 EP1819920B1 (fr) 2008-04-30

Family

ID=35911068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05815847A Revoked EP1819920B1 (fr) 2004-11-30 2005-11-28 Piston d'un moteur a combustion interne

Country Status (9)

Country Link
US (1) US20080121205A1 (fr)
EP (1) EP1819920B1 (fr)
JP (1) JP2008522086A (fr)
KR (1) KR20070095918A (fr)
CN (1) CN101069008A (fr)
BR (1) BRPI0518705A2 (fr)
DE (2) DE102004057558A1 (fr)
ES (1) ES2306256T3 (fr)
WO (1) WO2006058522A1 (fr)

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JP2008144638A (ja) * 2006-12-08 2008-06-26 Across Corp ピストン
DE102007010839B4 (de) * 2007-03-06 2009-02-05 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung eines Kolbens und Kolben mit einer ringförmigen Verstärkung bestehend aus mehreren Verstärkungssegmenten
DE102008002571A1 (de) * 2008-06-20 2009-12-31 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor
GB201001562D0 (en) * 2010-01-29 2010-03-17 Ricardo Uk Ltd Direct injection diesel
US9464592B2 (en) * 2011-04-18 2016-10-11 Achates Power, Inc. Piston thermal management in an opposed-piston engine
DE102012014194A1 (de) * 2012-07-18 2014-01-23 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens
DE102013009164A1 (de) * 2013-05-31 2014-12-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102013009155A1 (de) * 2013-05-31 2014-12-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US10585518B2 (en) 2014-10-15 2020-03-10 Microsoft Technology Licensing, Llc Display module support
CN105986922B (zh) * 2015-01-27 2019-06-28 强哲菲 基于激光焊接成型内冷却油道的钢活塞及其加工方法
DE102015002322A1 (de) * 2015-02-26 2016-09-01 Mahle International Gmbh Kolben für einen Verbrennungsmotor
CN106150749B (zh) * 2015-04-14 2018-08-31 强哲菲 一种基于激光焊接成型内冷却油道的钢活塞及其加工方法
CN107084069A (zh) * 2017-05-22 2017-08-22 无锡华星机电制造有限公司 一种发动机活塞
CN108678869A (zh) * 2018-08-01 2018-10-19 湖南江滨机器（集团）有限责任公司 发动机、活塞及活塞的制造方法

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Also Published As

Publication number Publication date
DE102004057558A1 (de) 2006-06-01
JP2008522086A (ja) 2008-06-26
CN101069008A (zh) 2007-11-07
DE502005003924D1 (de) 2008-06-12
KR20070095918A (ko) 2007-10-01
EP1819920B1 (fr) 2008-04-30
US20080121205A1 (en) 2008-05-29
ES2306256T3 (es) 2008-11-01
WO2006058522A1 (fr) 2006-06-08
BRPI0518705A2 (pt) 2008-12-02

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