FI113683B - Internal combustion piston unit - Google Patents

Internal combustion piston unit

Info

Publication number
FI113683B
FI113683B FI20011165A FI20011165A FI113683B FI 113683 B FI113683 B FI 113683B FI 20011165 A FI20011165 A FI 20011165A FI 20011165 A FI20011165 A FI 20011165A FI 113683 B FI113683 B FI 113683B
Authority
FI
Finland
Prior art keywords
upper section
skirt
sealing arrangement
internal combustion
piston
Prior art date
Application number
FI20011165A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20011165A (en
FI20011165A0 (en
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
Priority to FI20011165A priority Critical patent/FI113683B/en
Publication of FI20011165A0 publication Critical patent/FI20011165A0/en
Priority to EP02253880A priority patent/EP1264979B1/en
Priority to DE60218382T priority patent/DE60218382T2/en
Priority to AT02253880T priority patent/ATE355450T1/en
Publication of FI20011165A publication Critical patent/FI20011165A/en
Application granted granted Critical
Publication of FI113683B publication Critical patent/FI113683B/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

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>
FI20011165A 2001-06-04 2001-06-04 Internal combustion piston unit FI113683B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FI20011165A FI113683B (en) 2001-06-04 2001-06-04 Internal combustion piston unit
EP02253880A EP1264979B1 (en) 2001-06-04 2002-05-31 Piston unit for combustion engine
DE60218382T DE60218382T2 (en) 2001-06-04 2002-05-31 Piston for an internal combustion engine
AT02253880T ATE355450T1 (en) 2001-06-04 2002-05-31 PISTON FOR AN INTERNAL COMBUSTION ENGINE

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 (3)

Publication Number Publication Date
FI20011165A0 FI20011165A0 (en) 2001-06-04
FI20011165A FI20011165A (en) 2002-12-05
FI113683B true FI113683B (en) 2004-05-31

Family

ID=8561331

Family Applications (1)

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

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
EP1264979B1 (en) 2007-02-28
FI20011165A (en) 2002-12-05
FI20011165A0 (en) 2001-06-04
DE60218382T2 (en) 2007-11-22
EP1264979A2 (en) 2002-12-11
DE60218382D1 (en) 2007-04-12
ATE355450T1 (en) 2006-03-15
EP1264979A3 (en) 2003-07-30

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Legal Events

Date Code Title Description
MM Patent lapsed