EP0166109A2 - Piston à plusieurs parties pour un moteur à combustion interne - Google Patents

Piston à plusieurs parties pour un moteur à combustion interne Download PDF

Info

Publication number: EP0166109A2
Authority: EP; European Patent Office
Prior art keywords: screws; piston; areas; ring surfaces; ring
Prior art date: 1984-06-27
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

EP85105072A

Other languages

German (de)

English (en)

Other versions

EP0166109B1 (fr

EP0166109A3 (en

Inventor

Alois Barth

Lothar Wiemann

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.)

1984-06-27

Filing date

1985-04-26

Publication date

1986-01-02

1985-04-26 Application filed by Mahle GmbH filed Critical Mahle GmbH

1986-01-02 Publication of EP0166109A2 publication Critical patent/EP0166109A2/fr

1986-12-30 Publication of EP0166109A3 publication Critical patent/EP0166109A3/de

1989-04-26 Application granted granted Critical

1989-04-26 Publication of EP0166109B1 publication Critical patent/EP0166109B1/fr

Status Expired legal-status Critical Current

Links

238000002485 combustion reaction Methods 0.000 title claims abstract description 5
230000007423 decrease Effects 0.000 claims 1
230000036316 preload Effects 0.000 abstract 1

Images

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
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together

Definitions

the invention relates to a multi-part plunger for internal combustion engines according to the preamble of claim 1.
a piston of the generic type is known from DE-OS 28 21 176.
the upper and lower parts of the piston are connected with relatively few screws, e.g. B. with four screws with a piston diameter above 200 mm.
the ring surfaces stand out slightly from each other under the thermal and mechanical stresses prevailing in engine operation. This then leads to increased pressures in the areas which are only in contact with one another, with the result that the materially permissible maximum loads are exceeded there.
cavitation can occur in the areas in which the ring surfaces stand out slightly from one another.
the piston consists of an upper part 1 and a lower part 2, which are connected by screws 3.
the illustration of the piston shows this with assembled but not yet tightened screws 3.
these are slightly curved in the lower part 2 in the circumferential direction of the ring surface with the zenith of the curvature 6 exactly in one area in the Middle of two adjacent screws 3-.
the screw hole 7 itself is additionally arranged in a depression 5 in the annular surface 4 of the lower part 2.

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)

EP85105072A 1984-06-27 1985-04-26 Piston à plusieurs parties pour un moteur à combustion interne Expired EP0166109B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3423559		1984-06-27
DE3423559A DE3423559C1 (de)	1984-06-27	1984-06-27	Mehrteiliger Tauchkolben fuer Verbrennungsmotoren

Publications (3)

Publication Number	Publication Date
EP0166109A2 true EP0166109A2 (fr)	1986-01-02
EP0166109A3 EP0166109A3 (en)	1986-12-30
EP0166109B1 EP0166109B1 (fr)	1989-04-26

Family

ID=6239195

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP85105072A Expired EP0166109B1 (fr)	1984-06-27	1985-04-26	Piston à plusieurs parties pour un moteur à combustion interne

Country Status (4)

Country	Link
US (1)	US4603617A (fr)
EP (1)	EP0166109B1 (fr)
JP (1)	JPH0660595B2 (fr)
DE (1)	DE3423559C1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3540085A1 (de) *	1985-11-12	1987-05-14	Alcan Aluminiumwerke	Kolben fuer brennkraftmaschinen
BR9001859A (pt) *	1990-04-17	1991-11-12	Metal Leve Sa	Processo de fabricacao de embolo e embolo
BR9001916A (pt) *	1990-04-20	1991-11-12	Metal Leve Sa	Processo de obtencao de embolo refrigerado e embolo refrigerado
US5092290A (en) *	1990-09-13	1992-03-03	Navistar International Transportation Corp.	Engine piston assembly with planar pin mounting surface
BR9005376A (pt) *	1990-10-18	1992-06-16	Metal Leve Sa	Embolo bipartido com fechamento postico de galeria e processo para sua obtencao
US5499572A (en) *	1993-08-26	1996-03-19	Cobble; Daniel L.	Bi-tech piston
DE19642109A1 (de) *	1996-10-12	1998-04-16	Mahle Gmbh	Gebauter Kolben
DE19721013A1 (de) *	1997-05-20	1998-12-03	Mahle Gmbh	Schraubenanordnung bei gebauten Kolben
US6182630B1 (en)	1998-11-23	2001-02-06	Federal-Mogul World Wide, Inc.	Bolted articulated piston
GB2384541A (en) *	2002-01-25	2003-07-30	Federal Mogul Bradford Ltd	Piston with gap between crown and body portion to allow for heat expansion
US7100480B2 (en) *	2003-04-02	2006-09-05	Irwin Industrial Tool Company	Quick adjusting pliers
DE102007019931A1 (de) *	2007-04-27	2008-10-30	Mahle International Gmbh	Verfahren zum Verschrauben zweier Metallteile

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2165619A (en) *	1937-07-10	1939-07-11	Nash Kelvinator Corp	Piston
US3029112A (en) *	1959-02-02	1962-04-10	Napier & Son Ltd	Composite structures, particularly composite pistons
DE1269414B (de) *	1966-06-15	1968-05-30	Mahle Kg	Brennkraftmaschinenkolben mit Bodenplatte
US3960048A (en) *	1975-03-28	1976-06-01	Illinois Tool Works Inc.	Fastener assembly for creating accurate tension indicating fastener and method of calibrating the same
DE2821176C2 (de) *	1978-05-13	1982-12-09	Mahle Gmbh, 7000 Stuttgart	Kolben mit Bodenplatte für Verbrennungsmotor
DE2832970A1 (de) *	1978-07-27	1980-02-07	Schmidt Gmbh Karl	Gebauter, fluessigkeitsgekuehlter kolben fuer brennkraftmaschinen
JPS5831464B2 (ja) *	1980-04-30	1983-07-06	川崎重工業株式会社	内燃機関のピストン構造
JPS5744814A (en) *	1980-08-31	1982-03-13	Fujitsu Ltd	Waveform regulating circuit

1984
- 1984-06-27 DE DE3423559A patent/DE3423559C1/de not_active Expired
1985
- 1985-04-26 EP EP85105072A patent/EP0166109B1/fr not_active Expired
- 1985-06-18 US US06/746,068 patent/US4603617A/en not_active Expired - Lifetime
- 1985-06-27 JP JP60139230A patent/JPH0660595B2/ja not_active Expired - Lifetime

Also Published As

Publication number	Publication date
JPS6116251A (ja)	1986-01-24
EP0166109B1 (fr)	1989-04-26
EP0166109A3 (en)	1986-12-30
DE3423559C1 (de)	1985-09-26
US4603617A (en)	1986-08-05
JPH0660595B2 (ja)	1994-08-10

Legal Events

Date	Code	Title	Description
1985-11-01	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1986-01-02	AK	Designated contracting states	Designated state(s): FR GB IT
1986-11-12	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1986-12-30	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): FR GB IT
1987-07-08	17P	Request for examination filed	Effective date: 19870507
1987-12-02	17Q	First examination report despatched	Effective date: 19871016
1989-03-11	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1989-04-26	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): FR GB IT
1989-05-18	ITF	It: translation for a ep patent filed
1989-05-24	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1989-06-02	ET	Fr: translation filed
1990-02-22	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1990-02-22	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1990-04-11	26N	No opposition filed
1991-04-30	ITTA	It: last paid annual fee
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2004-03-30	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20040330 Year of fee payment: 20
2004-04-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20040421 Year of fee payment: 20
2005-04-25	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20050425
2005-05-18	REG	Reference to a national code	Ref country code: GB Ref legal event code: PE20

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