EP0116490A1 - Piston pour moteur a combustion interne - Google Patents

Piston pour moteur a combustion interne Download PDF

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Publication number
EP0116490A1
EP0116490A1 EP84400052A EP84400052A EP0116490A1 EP 0116490 A1 EP0116490 A1 EP 0116490A1 EP 84400052 A EP84400052 A EP 84400052A EP 84400052 A EP84400052 A EP 84400052A EP 0116490 A1 EP0116490 A1 EP 0116490A1
Authority
EP
European Patent Office
Prior art keywords
piston
chamber
ribs
define
internal combustion
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.)
Withdrawn
Application number
EP84400052A
Other languages
German (de)
English (en)
French (fr)
Inventor
Auguste Moiroux
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.)
Bmb Civile Ste
Original Assignee
Bmb Civile Ste
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 Bmb Civile Ste filed Critical Bmb Civile Ste
Publication of EP0116490A1 publication Critical patent/EP0116490A1/fr
Withdrawn legal-status Critical Current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 
    • F02F3/16—Pistons  having cooling means
    • F02F3/18—Pistons  having cooling means the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons

Definitions

  • longitudinal ribs in the closed annular chamber situated between the piston and its internal lining, said ribs extending over most of the height of the chamber and being alternately inclined in one direction and then in the other. relative to the axis of the piston, so as to define, in said chamber, a succession of adjacent longitudinal channels whose section increases (or decreases) from one end of the piston towards the other.
  • the cylindrical piston 1 has an annular portion 2 provided with fins 3.
  • the latter is intended, as is known , to constitute the engine sweep pump and operates in a chamber at a relatively low temperature.
  • a cylindrical liner 4 coaxial with the piston.
  • a shoulder 4b of the liner 4 allows its attachment to the annular portion 2 of the piston.
  • the outside diameter of the liner 4 is less than the inside diameter of the piston 1 so that the assembly defines an annular chamber 5 which is sealed from the outside.
  • Chamber 5 will not, in general, be limited to the strict annular volume defined by the piston and its lining; on the contrary, it is preferable to close the liner 4 with a bottom 4a coming at some distance from the bottom of the piston which moves in the combustion chamber of the engine.
  • the closed chamber 5 has an annular part and a substantially flat volume (5a) between the bottoms 4a and the.
  • ribs 6 which are substantially longitudinal. They extend, as can be seen, over almost the entire height of the piston but stop at some distance from the shoulder 4b. On the side of the bottom 4a the ribs extend substantially to this bottom but, in the absence of flat volume 5a, should stop some distance from the bottom of the piston.
  • the ribs 6 have come from manufacture with the lining 4 and it can be seen in FIG. 2 that they are slightly inclined relative to the axis of the lining, alternately in one direction then in the other.
  • these ribs 6, very slightly helical, define adjacent longitudinal channels 7 throughout the annular part of the chamber 5.
  • all the channels 7 will be identical and their section will increase (or decrease) from one of the ends of the piston towards each other.
  • cooling fluid oil, sodium, etc.
  • the heat to be removed comes from the combustion chamber and is transmitted to the piston 1 on the side of its bottom 1a.
  • the piston 1 moves in the direction of the arrow F and the coolant which had collected in the chamber 5a on the bottom side la is first entrained in the movement of the piston.
  • the cooling fluid continues its movement by inertia in the direction of the arrow F, mainly using those of the channels 7 whose section is the greatest in the vicinity of the bottom of the piston.
  • the speed of the fluid increases rapidly, in the channels 7, the section of which decreases and becomes very high when it reaches the shoulder 4b.
  • the heat transfer then takes place satisfactorily between the cooling fluid and the annular portion 2 cooled by the purge air, thanks in particular to the fins 3.
  • the invention can be implemented on most pistons for internal combustion engines, in particular on those whose cooling is difficult to obtain by known means.
  • the ribs 6 are produced at the same time as the jacket 4, it is obvious that these ribs could be produced at the same time as the piston 1.
  • the piston and the jacket 4 are generally constituted by molded parts then machined, which allows easy production of the ribs.

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)
EP84400052A 1983-01-27 1984-01-11 Piston pour moteur a combustion interne Withdrawn EP0116490A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8301236 1983-01-27
FR8301236A FR2540183A1 (fr) 1983-01-27 1983-01-27 Piston pour moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP0116490A1 true EP0116490A1 (fr) 1984-08-22

Family

ID=9285332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84400052A Withdrawn EP0116490A1 (fr) 1983-01-27 1984-01-11 Piston pour moteur a combustion interne

Country Status (5)

Country Link
US (1) US4513697A (es)
EP (1) EP0116490A1 (es)
JP (1) JPS59145343A (es)
ES (1) ES285507Y (es)
FR (1) FR2540183A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6929455B2 (en) 2002-10-15 2005-08-16 Tecumseh Products Company Horizontal two stage rotary compressor

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992014044A1 (en) * 1991-01-22 1992-08-20 Zherebtsov Viktor Veniaminovic One-cycle engine
KR20050039320A (ko) * 2003-10-24 2005-04-29 현대자동차주식회사 내연기관 엔진용 피스톤
US6904876B1 (en) * 2004-06-28 2005-06-14 Ford Global Technologies, Llc Sodium cooled pistons for a free piston engine
SE535330C2 (sv) * 2010-12-09 2012-06-26 Peter Nyberg Högtemperaturkolv
DE102011114105A1 (de) * 2010-12-18 2012-06-21 Mahle International Gmbh Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
US8544441B2 (en) * 2011-08-04 2013-10-01 Federal-Mogul Ignition Company Piston including a pair of cooling chambers
JP2021102928A (ja) * 2019-12-24 2021-07-15 トヨタ自動車株式会社 ピストン

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR452835A (fr) * 1913-01-02 1913-05-23 Hans Windhoff Dispositif de refroidissement des cylindres pour moteurs à combustion
DE396902C (de) * 1921-06-10 1924-06-11 Jacques Francois Felies Kuehlwassermantel, insbesondere fuer Brennkraftmaschinen
CH113422A (de) * 1925-02-13 1926-03-16 Otto Philipp Kolbenkühleinrichtung für Verbrennungskraftmaschinen.
US1608811A (en) * 1923-06-09 1926-11-30 John T Rauen Piston-cooling system
US1682357A (en) * 1928-08-28 sperry
FR2441073A1 (fr) * 1978-11-13 1980-06-06 Moiroux Auguste Compresseur a action directe equipe d'un piston monobloc

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US195585A (en) * 1877-09-25 Improvement in gas-engines
US942140A (en) * 1906-11-02 1909-12-07 William R Donaldson Explosive-engine.
GB191015216A (en) * 1909-11-22 1910-10-27 Fried Krupp Germaniawerft Ag Improvements in and relating to Piston Cooling Devices for Internal Combustion Engines.
US3314402A (en) * 1965-06-03 1967-04-18 Rostock Dieselmotoren Apparatus for cooling a piston
US4013047A (en) * 1975-12-12 1977-03-22 General Motors Corporation Engine with combustion wall temperature control means
US4470375A (en) * 1983-06-09 1984-09-11 Automotive Engine Associates Fully hydrodynamic piston ring and piston assembly with elastomerically conforming geometry and internal cooling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1682357A (en) * 1928-08-28 sperry
FR452835A (fr) * 1913-01-02 1913-05-23 Hans Windhoff Dispositif de refroidissement des cylindres pour moteurs à combustion
DE396902C (de) * 1921-06-10 1924-06-11 Jacques Francois Felies Kuehlwassermantel, insbesondere fuer Brennkraftmaschinen
US1608811A (en) * 1923-06-09 1926-11-30 John T Rauen Piston-cooling system
CH113422A (de) * 1925-02-13 1926-03-16 Otto Philipp Kolbenkühleinrichtung für Verbrennungskraftmaschinen.
FR2441073A1 (fr) * 1978-11-13 1980-06-06 Moiroux Auguste Compresseur a action directe equipe d'un piston monobloc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6929455B2 (en) 2002-10-15 2005-08-16 Tecumseh Products Company Horizontal two stage rotary compressor

Also Published As

Publication number Publication date
JPS59145343A (ja) 1984-08-20
FR2540183A1 (fr) 1984-08-03
US4513697A (en) 1985-04-30
ES285507Y (es) 1986-05-01
FR2540183B1 (es) 1985-05-10
ES285507U (es) 1985-09-01

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Legal Events

Date Code Title Description
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

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL

17P Request for examination filed

Effective date: 19841222

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19860401

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MOIROUX, AUGUSTE