ATE355450T1 - PISTON FOR AN INTERNAL COMBUSTION ENGINE - Google Patents

PISTON FOR AN INTERNAL COMBUSTION ENGINE

Info

Publication number
ATE355450T1
ATE355450T1 AT02253880T AT02253880T ATE355450T1 AT E355450 T1 ATE355450 T1 AT E355450T1 AT 02253880 T AT02253880 T AT 02253880T AT 02253880 T AT02253880 T AT 02253880T AT E355450 T1 ATE355450 T1 AT E355450T1
Authority
AT
Austria
Prior art keywords
upper section
skirt
piston
sealing arrangement
combustion engine
Prior art date
Application number
AT02253880T
Other languages
German (de)
Inventor
Hannu Nurmi
Carl-Erik Roesgren
Original Assignee
Waertsilae Finland Oy
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 Waertsilae Finland Oy filed Critical Waertsilae Finland Oy
Application granted granted Critical
Publication of ATE355450T1 publication Critical patent/ATE355450T1/en

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 
    • F02F3/0015—Multi-part pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

Piston assembly (1) for an internal combustion engine comprising an upper section (2) abutting onto the combustion chamber of the cylinder, a piston skirt (3) in connection with the upper section, and a sealing arrangement for sealing the joint between the upper section and the skirt. In the piston assembly the sealing arrangement (1.2, 1.3) between the upper section and the skirt is provided by utilizing the difference between the mounting and working temperatures of the upper section (2) and the piston skirt (3). Preferably, the sealing arrangement between the upper section and the skirt is arranged to operate under working pressure and the sealing arrangement comprises several operationally in succession provided counter surfaces, which are arranged with respect to each other so that their mutual distance is reduced at the working temperature of the surfaces, and that a pressure balancing chamber is formed between two successive, tightly arranged counter surface pairs (2a - 3b). <IMAGE>
AT02253880T 2001-06-04 2002-05-31 PISTON FOR AN INTERNAL COMBUSTION ENGINE ATE355450T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20011165A FI113683B (en) 2001-06-04 2001-06-04 Internal combustion piston unit

Publications (1)

Publication Number Publication Date
ATE355450T1 true ATE355450T1 (en) 2006-03-15

Family

ID=8561331

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02253880T ATE355450T1 (en) 2001-06-04 2002-05-31 PISTON FOR AN INTERNAL COMBUSTION ENGINE

Country Status (4)

Country Link
EP (1) EP1264979B1 (en)
AT (1) ATE355450T1 (en)
DE (1) DE60218382T2 (en)
FI (1) FI113683B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006015587A1 (en) * 2006-04-04 2007-10-11 Mahle International Gmbh Top part of a built-up piston

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4419925A (en) * 1978-06-15 1983-12-13 Toyota Jidosha Kogyo Kabushiki Kaisha Assembled piston for engine
US4253430A (en) * 1979-01-11 1981-03-03 General Motors Corporation Insulated oil cooled piston assembly
DE3110292A1 (en) * 1981-03-17 1982-09-30 Rudolf Dr. 6800 Mannheim Wieser Piston for internal combustion engine
JPS61135961A (en) * 1984-12-05 1986-06-23 Ngk Insulators Ltd Piston with piston head made of ceramics
US5499572A (en) * 1993-08-26 1996-03-19 Cobble; Daniel L. Bi-tech piston

Also Published As

Publication number Publication date
DE60218382T2 (en) 2007-11-22
EP1264979A3 (en) 2003-07-30
FI20011165A0 (en) 2001-06-04
EP1264979A2 (en) 2002-12-11
DE60218382D1 (en) 2007-04-12
EP1264979B1 (en) 2007-02-28
FI113683B (en) 2004-05-31
FI20011165A (en) 2002-12-05

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties