EP0197449A2 - Piston à plusieurs parties pour une machine à combustion interne - Google Patents

Piston à plusieurs parties pour une machine à combustion interne Download PDF

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Publication number
EP0197449A2
EP0197449A2 EP86104232A EP86104232A EP0197449A2 EP 0197449 A2 EP0197449 A2 EP 0197449A2 EP 86104232 A EP86104232 A EP 86104232A EP 86104232 A EP86104232 A EP 86104232A EP 0197449 A2 EP0197449 A2 EP 0197449A2
Authority
EP
European Patent Office
Prior art keywords
piston
centering
skirt
base plate
end cover
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
EP86104232A
Other languages
German (de)
English (en)
Other versions
EP0197449A3 (en
EP0197449B1 (fr
Inventor
Manfred Schindler
Helmut Werner Burghardt
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.)
Ceramtec GmbH
Ficht GmbH
Original Assignee
Ceramtec GmbH
Ficht 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 Ceramtec GmbH, Ficht GmbH filed Critical Ceramtec GmbH
Priority to AT86104232T priority Critical patent/ATE53893T1/de
Publication of EP0197449A2 publication Critical patent/EP0197449A2/fr
Publication of EP0197449A3 publication Critical patent/EP0197449A3/de
Application granted granted Critical
Publication of EP0197449B1 publication Critical patent/EP0197449B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • 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
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Definitions

  • the invention relates to a multi-part reciprocating piston for internal combustion engines, in particular those in which the translational movement of two opposite, synchronous pistons is converted into rotation by a crank-loop drive, with a piston rod rigidly connected to the two pistons, as is the case, for example, in DE-PS 920 758 is described and shown.
  • Reciprocating pistons of internal combustion engines composed of several individual parts are known in many embodiments in so-called large engine construction.
  • the multi-part piston has been used there for a long time.
  • the reasons lie in the various loads to which the engine piston is exposed.
  • the top of the piston with its top land is exposed to alternating thermal stresses and static pressures.
  • the piston is generally subjected to high dynamic acceleration and deceleration forces.
  • engines with a thrust crank mechanism especially with short strokes / loads on the piston skirt, high bending forces due to the high normal pressures.
  • the object of the invention is therefore to be seen to align the Mekrteilmaschine a reciprocating piston in such a way that the assembly or arrangement of a piston ring made of ceramic material in its intended groove in the top land of the piston crown, i.e. a piston ring, the material cannot be expanded without breaking, is easily possible.
  • the multi-part design should meet the demands placed on such a piston with regard to thermal and dynamic load capacity and improve its running properties and service life.
  • the construction of the reciprocating piston according to the invention allows the piston ring to be arranged in the annular groove provided in the top land of the piston crown without further ado before the assembly of its main parts.
  • the piston shirt made of ceramic material and the piston head made of ceramic material with the top land result in good sliding properties and a long service life.
  • the centering piece made of metallic material with the base plate and the upper end cover with the centering hub made of the same material not only center the reciprocating piston on the end of the piston rod but also guarantee a secure clamping of the main parts of the piston, since the elasticity of the metallic material can withstand the changing permanent loads that occur.
  • the large amount of heat accumulating on the piston crown during the combustion process is rapidly dissipated to the piston rod by heat flow, so that heat build-up in the piston is avoided.
  • piston design according to the invention and the piston arrangement described can also be used in piston machines in which the normal pressures of the thrust crank mechanism are absorbed by a crosshead slide, as a result of which the piston skirt is relieved.
  • piston engines have been proposed, for example, as so-called bio-gas engines.
  • the reciprocating piston essentially consists of a piston skirt 1 with a piston skirt 2, a piston skirt 3 with a top land 4, a centering sleeve 5 for radially fixing the two aforementioned piston main parts 1, 2 and 3, 4, one in an annular groove 6 of the top land 4 seated piston ring 7, a centering piece 8 with base plate 9 and from an end cover 10 with centering hub 11.
  • a piston rod is designated, at each end of which there is a reciprocating piston (the second reciprocating piston is not shown), both of which are rigidly connected to the piston rod 12. This is done, for example, by a cap screw (13) which is screwed into the piston rod 12.
  • the radial fixation of the reciprocating piston with respect to the piston rod 12 takes place by means of a snug fit 14 plate 9 on the piston rod 12.
  • the base plate 9 in turn fixes with its centering piece 8 the centering hub 11 of the end cover 10.
  • the two parts 8, 9 and 10, 11 are secured against rotation by a dowel pin 15 which with its inner end in the Piston rod 12 protrudes.
  • the dowel pin 15 also forms a fuse for the cap screw 13.
  • the piston skirt 1 with the piston skirt 2, the piston crown 3 with the top land 4, the spring-loaded piston ring 7, which has an expansion slot 16, and the centering sleeve 5 are all made of a ceramic material which is highly thermally stable and has good sliding properties .
  • the piston ring 7 is provided with an arcuate rounded portion 17 for the arrangement of a torsion pin 18 which prevents the piston ring 7 from moving.
  • a groove 19 is provided on the inner wall.
  • a fillet 20 is incorporated on the piston crown 3 to avoid notch stresses.
  • the top land 4 can be provided radially on the outside with a labyrinth seal in the form of rotational grooves 24 (FIG. 2).
  • Piston shirt, piston ring and piston crown are made of ceramic.
  • the piston crown can also be made from aluminum titanate.
  • Excellent material for the piston ring is also silicon - infiltrated graphite (silicon carbide / graphite composite) or steel that has been coated with ceramic (eg zirconium oxide or silicon carbide). It is preferred if piston skirt (1) and piston crown (3) are made of the same material, or if (1) (3), piston ring (7) and centering sleeve (5) are made of the same material.

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)
EP86104232A 1985-04-04 1986-03-27 Piston à plusieurs parties pour une machine à combustion interne Expired - Lifetime EP0197449B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86104232T ATE53893T1 (de) 1985-04-04 1986-03-27 Mehrteiliger hubkolben fuer brennkraftmaschinen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8510204U DE8510204U1 (de) 1985-04-04 1985-04-04 Mehrteiliger Hubkolben für Brennkraftmaschinen
DE8510204U 1985-04-04

Publications (3)

Publication Number Publication Date
EP0197449A2 true EP0197449A2 (fr) 1986-10-15
EP0197449A3 EP0197449A3 (en) 1987-11-25
EP0197449B1 EP0197449B1 (fr) 1990-05-02

Family

ID=6779583

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104232A Expired - Lifetime EP0197449B1 (fr) 1985-04-04 1986-03-27 Piston à plusieurs parties pour une machine à combustion interne

Country Status (6)

Country Link
US (1) US4751871A (fr)
EP (1) EP0197449B1 (fr)
JP (1) JPS61232366A (fr)
AT (1) ATE53893T1 (fr)
CA (1) CA1272645A (fr)
DE (2) DE8510204U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097893A1 (fr) * 2011-01-21 2012-07-26 Geist, Bertwin Piston alternatif pour moteur à piston alternatif, et moteur à piston alternatif, et cylindre d'un moteur à piston alternatif

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4833977A (en) * 1986-05-07 1989-05-30 Volkswagen Ag Piston for internal combustion engine
US4955284A (en) * 1989-02-27 1990-09-11 Ingersoll-Rand Company Piston having ceramic parts
US4920864A (en) * 1989-04-14 1990-05-01 Jpi Transportation Products, Inc. Reinforced piston
US5076150A (en) * 1990-05-04 1991-12-31 Dresser-Rand Company Piston assembly with wear resistant piston ring lands
GB2246833B (en) * 1990-06-23 1994-05-25 T & N Technology Ltd Pistons for engines or motors
DE4301860A1 (de) * 1993-01-25 1994-09-22 Stefan Dipl Phys Stock Spezialkolben für Kolbenmaschinen
US5375567A (en) * 1993-08-27 1994-12-27 Lowi, Jr.; Alvin Adiabatic, two-stroke cycle engine
US6044819A (en) * 1996-03-06 2000-04-04 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Pistons and cylinders made of carbon-carbon composite materials
US5713333A (en) * 1996-10-21 1998-02-03 Cummins Engine Company, Inc. Wear-resistant fuel distributor rotor
JPH10292868A (ja) * 1997-04-18 1998-11-04 Honda Motor Co Ltd 液体ポンプの軸封機構
US20080289488A1 (en) * 1999-04-01 2008-11-27 Peter Robert Raffaele Reciprocating fluid machines
US6076506A (en) * 1998-05-20 2000-06-20 Caterpillar Inc. Piston for use in an engine
AUPR459501A0 (en) * 2001-04-27 2001-05-24 Raffaele, Michael John Improvements in engines and components
DE102004018712B4 (de) * 2004-04-17 2013-04-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Kolben für eine Brennkraftmaschine
DE102004018714B4 (de) * 2004-04-17 2013-04-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zur Herstellung eines Kolbens
EP1911952B1 (fr) * 2006-10-11 2017-11-22 Nissan Motor Co., Ltd. Moteur à combustion interne
JP2010518312A (ja) * 2007-02-14 2010-05-27 アジレント・テクノロジーズ・インク シリコンカーバイドピストンを備えているｈｐｌｃポンプ装置及び／又は作動チャンバ
JP7313505B1 (ja) * 2022-03-28 2023-07-24 Ｔｐｒ株式会社 ピストンユニット、トップランド部材、及びピストンユニット用部品の組合せ

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE463748C (de) * 1928-08-03 Werke Kiel Akt Ges Deutsche Mit Kuehleinsatz versehener Kolben fuer Brennkraftmaschinen
GB119183A (en) * 1918-02-11 1918-09-26 Alphonse Soetens Improvements in or relating to Pistons.
US1668672A (en) * 1927-04-01 1928-05-08 Charles W Darrah Piston
US1956355A (en) * 1931-02-18 1934-04-24 Junkers Hugo Internal combustion engine
US1963725A (en) * 1933-09-08 1934-06-19 Perfect Circle Co Piston and piston ring
US2105950A (en) * 1936-03-07 1938-01-18 Ingersoll Rand Co Piston
US2471477A (en) * 1946-03-08 1949-05-31 Air Liquide Piston packing
US2657961A (en) * 1950-03-15 1953-11-03 Maschf Augsburg Nuernberg Ag Piston for internal-combustion engines
DE920758C (de) * 1951-12-21 1954-11-29 Heinz Boerner Zweitaktbrennkraftmaschine
US3136306A (en) * 1961-04-20 1964-06-09 Stevens Inst Technology Piston for a high performance internal combustion engine
DE2212922B2 (de) * 1972-03-17 1976-02-05 Karl Schmidt Gmbh, 7107 Neckarsulm Gebauter kolben fuer verbrennungskraftmaschinen
GB1439328A (en) * 1972-07-28 1976-06-16 Wellworthy Ltd Pistons and piston rings
US4242948A (en) * 1977-12-16 1981-01-06 Cummins Engine Company, Inc. Insulated composite piston
US4404935A (en) * 1981-04-27 1983-09-20 Kyocera International, Inc. Ceramic capped piston
EP0088952B1 (fr) * 1982-03-05 1986-05-28 Feldmühle Aktiengesellschaft Pièce de déplacement pour une pompe avec piston
DE3218320A1 (de) * 1982-05-14 1983-11-17 Ficht GmbH, 8011 Kirchseeon Vorrichtung zum loesbaren befestigen der kolben an den kolbenstangen einer brennkraftmaschine
DE3301913C2 (de) * 1983-01-21 1985-05-09 Feldmühle AG, 4000 Düsseldorf Kolbenring für eine Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012097893A1 (fr) * 2011-01-21 2012-07-26 Geist, Bertwin Piston alternatif pour moteur à piston alternatif, et moteur à piston alternatif, et cylindre d'un moteur à piston alternatif

Also Published As

Publication number Publication date
EP0197449A3 (en) 1987-11-25
DE3670885D1 (de) 1990-06-07
JPS61232366A (ja) 1986-10-16
US4751871A (en) 1988-06-21
JPH0587672B2 (fr) 1993-12-17
ATE53893T1 (de) 1990-06-15
EP0197449B1 (fr) 1990-05-02
CA1272645A (fr) 1990-08-14
DE8510204U1 (de) 1985-07-11

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