EP0745181B1 - Moteur deux-temps - Google Patents

Moteur deux-temps Download PDF

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Publication number
EP0745181B1
EP0745181B1 EP95909715A EP95909715A EP0745181B1 EP 0745181 B1 EP0745181 B1 EP 0745181B1 EP 95909715 A EP95909715 A EP 95909715A EP 95909715 A EP95909715 A EP 95909715A EP 0745181 B1 EP0745181 B1 EP 0745181B1
Authority
EP
European Patent Office
Prior art keywords
piston
heat
piston rod
stroke engine
engine according
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.)
Expired - Lifetime
Application number
EP95909715A
Other languages
German (de)
English (en)
Other versions
EP0745181A1 (fr
Inventor
Lutz Hamann
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.)
Ficht GmbH and Co KG
Original Assignee
Ficht GmbH and Co KG
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 Ficht GmbH and Co KG filed Critical Ficht GmbH and Co KG
Publication of EP0745181A1 publication Critical patent/EP0745181A1/fr
Application granted granted Critical
Publication of EP0745181B1 publication Critical patent/EP0745181B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
    • F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
    • 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
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P2003/2278—Heat pipes
    • 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
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • 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
    • F01P3/10—Cooling by flow of coolant through pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • Such an engine known for example from DE-OS 34 33 510, has at least two piston cylinder units lying opposite one another on an axis, the rigidly attached piston rods of which are coupled via a crank loop drive arranged between the piston cylinder units.
  • the inventive design of the piston rod as a heat dissipation tube creates a two-stroke engine, the piston of which is surprisingly well cooled despite the high power density of two-stroke engines and the exhaust gases flowing out during the working cycle and heating the piston edge of the piston crown. It is surprising that this principle of heat dissipation enables such rapid and effective heat dissipation, even with two-stroke engines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
  • Valve Device For Special Equipments (AREA)

Claims (9)

  1. Moteur à deux temps, en particulier un moteur à mécanisme à coulisse, ce moteur comportant un piston faisant le va-et-vient dans chaque cylindre, la tige de piston (6) ayant la forme d'un tube d'évacuation de la chaleur pour refroidir le piston (4), de manière à ce que le tube d'évacuation de la chaleur soit induit en un mouvement rapide de va-et-vient sensiblement dans la direction de l'axe longitudinal du tube, et qu'une de ses extrémités soit en contact de transfert de chaleur avec le piston (4), la tige de piston (6) étant sensiblement creuse sur toute sa longueur, fermée hermétiquement, s'étendant jusqu'à l'espace du carter qui sert d'abaisseur de chaleur, et étant par exemple remplie d'une quantité prédéterminée d'un liquide de travail (16) connu en soi, pour tube échangeur de chaleur, qui s'évapore sous l'influence de la chaleur à évacuer.
  2. Moteur à deux temps selon la revendication 1,
    caractérisé en ce que le tube échangeur de chaleur présente de manière connue en soi un revêtement poreux.
  3. Moteur à deux temps selon la revendication 1 et/ou 2,
    caractérisé en ce que le liquide de travail (16) présente une courbe de pression de vapeur située dans une fourchette de températures entre 50 et 300°C environ pour une pression de 30 bar environ.
  4. Moteur à deux temps selon la revendication 3,
    caractérisé en ce quele liquide de travail est de l'eau, du diphényle, du perchloréthylène, du trichlorélhylène ou un hydrocarbure halogéné.
  5. Moteur à deux temps selon l'une ou plusieurs des revendications 3 et 4,
    caractérisé en ce que la partie non remplie de liquide de travail (16) du tube échangeur de chaleur est sous vide.
  6. Moteur à deux temps selon l'une ou plusieurs des revendications 1 à 5,
    caractérisé en ce que, dans le piston (4) au voisinage de la base de celui-ci, est formé un espace creux (25) qui est en relation de transfert avec l'espace creux de la tige de piston (6).
  7. Moteur à deux temps selon la revendication 6,
    caractérisé en ce que l'espace creux (25) formé dans le piston (4) s'étend sensiblement sur toute la surface de la base du piston.
  8. Moteur à deux temps selon l'une ou plusieurs des revendications 1 à 7, comportant un palier de cloison de séparation agencé dans la cloison entre le cylindre et l'espace du carter et traversé par la tige de piston, le palier de cloison (15) étant lubrifié par de l'huile provenant de la chambre de carter,
    caractérisé en ce que l'extrémité froide de la tige de piston (6) est refroidie par un jet d'huile (23) dirigé vers la région de la tige de piston (6) qui entre dans l'espace de carter, l'huile de ce jet pénètrant dans le carter à huile (20).
  9. Moteur à deux temps selon l'une ou plusieurs des revendications 1 à 8, dans lequel la tête du piston est vissée sur la tige de piston au moyen d'une vis (17), caractérisé en ce que le trou taraudé pour la vis (17) pratiqué dans la tige de piston permet un accès vers l'espace creux de la tige de piston (6).
EP95909715A 1994-02-17 1995-02-13 Moteur deux-temps Expired - Lifetime EP0745181B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4405091 1994-02-17
DE4405091A DE4405091A1 (de) 1994-02-17 1994-02-17 Wärmerohrvorrichtung, insbesondere Vorrichtung zum Kühlen von Schwingungen ausführenden Motorteilen
PCT/EP1995/000526 WO1995022686A1 (fr) 1994-02-17 1995-02-13 Systeme a tube echangeur de chaleur, notamment systeme servant a refroidir les pieces de moteur a mouvement alternatif

Publications (2)

Publication Number Publication Date
EP0745181A1 EP0745181A1 (fr) 1996-12-04
EP0745181B1 true EP0745181B1 (fr) 1997-09-03

Family

ID=6510500

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95909715A Expired - Lifetime EP0745181B1 (fr) 1994-02-17 1995-02-13 Moteur deux-temps

Country Status (4)

Country Link
EP (1) EP0745181B1 (fr)
AT (1) ATE157740T1 (fr)
DE (2) DE4405091A1 (fr)
WO (1) WO1995022686A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004038945A1 (de) * 2004-08-11 2006-02-23 Mahle International Gmbh Leichtmetallkolben mit Wärmerohren

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007000652B4 (de) 2007-11-07 2016-08-18 Technische Universität Dresden Kolbenkühlvorrichtung für Kolbenmaschinen mit oszillierender und translatorischer Bewegung des Kolbens und der Kolbenstange
DE102008055939B3 (de) * 2008-11-05 2009-11-05 Rajat Gupta Brennkraftmaschine
USD749715S1 (en) 2012-08-06 2016-02-16 Iff Gmbh Electric heating apparatus
DE102013100830A1 (de) 2013-01-28 2014-07-31 Bertwin R. Geist Immobilien + Erneuerbare Energien E.K. Verfahren zum Herstellen einer für ein vorbestimmtes Medium druckdichten, hohlen Kolbenstange
WO2014076305A1 (fr) * 2012-11-19 2014-05-22 Bertwin R. Geist Immobilien + Erneuerbare Energien E.K. Procédé de fabrication d'un corps creux étanche pour une substance prédéfinie
DE102012111136A1 (de) 2012-11-19 2014-05-22 Bertwin R. Geist Immobilien + Erneuerbare Energien E.K. Verfahren zum Herstellen eines für ein vorbestimmtes Medium druckdichten Hohlkörpers
DE102014201473A1 (de) 2014-01-28 2015-07-30 Neuman & Esser Gmbh & Co. Kg Kolbenstange für kolbenkompressoren und kolbenkompressor
US11761369B1 (en) * 2021-11-01 2023-09-19 United States Of America As Represented By The Secretary Of The Air Force Heat pipes integrated into a 3-D printed part

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074156A2 (fr) * 1981-09-05 1983-03-16 Mitsubishi Jukogyo Kabushiki Kaisha Piston pour moteur à combustion interne
EP0619419A1 (fr) * 1993-04-01 1994-10-12 Eaton Corporation Soupape pour moteur ultra légère

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884293A (en) * 1973-07-23 1975-05-20 Isothermics Cooling 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
DE3433510A1 (de) * 1984-09-12 1986-03-20 Ficht GmbH, 8011 Kirchseeon Gleitstein fuer eine mit einer kurbelwelle zusammenwirkenden kurbelschleife, insbesondere fuer eine brennkraftmaschine mit mindestens einem zylinder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0074156A2 (fr) * 1981-09-05 1983-03-16 Mitsubishi Jukogyo Kabushiki Kaisha Piston pour moteur à combustion interne
EP0619419A1 (fr) * 1993-04-01 1994-10-12 Eaton Corporation Soupape pour moteur ultra légère

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004038945A1 (de) * 2004-08-11 2006-02-23 Mahle International Gmbh Leichtmetallkolben mit Wärmerohren

Also Published As

Publication number Publication date
WO1995022686A1 (fr) 1995-08-24
EP0745181A1 (fr) 1996-12-04
DE4405091A1 (de) 1995-08-24
ATE157740T1 (de) 1997-09-15
DE59500610D1 (de) 1997-10-09

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