EP0429918A1 - Cadre pour le guidage des manetons pour un mécanisme de glissement d'un moteur à combustion interne - Google Patents

Cadre pour le guidage des manetons pour un mécanisme de glissement d'un moteur à combustion interne Download PDF

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Publication number
EP0429918A1
EP0429918A1 EP90121458A EP90121458A EP0429918A1 EP 0429918 A1 EP0429918 A1 EP 0429918A1 EP 90121458 A EP90121458 A EP 90121458A EP 90121458 A EP90121458 A EP 90121458A EP 0429918 A1 EP0429918 A1 EP 0429918A1
Authority
EP
European Patent Office
Prior art keywords
webs
slideway
crank loop
frame according
crank
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
EP90121458A
Other languages
German (de)
English (en)
Other versions
EP0429918B1 (fr
Inventor
Alois Bauer
Wolfram Hellmich
Manfred Schindler
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
Original Assignee
Ficht GmbH
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Filing date
Publication date
Application filed by Ficht GmbH filed Critical Ficht GmbH
Publication of EP0429918A1 publication Critical patent/EP0429918A1/fr
Application granted granted Critical
Publication of EP0429918B1 publication Critical patent/EP0429918B1/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
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups
    • F01B9/02—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft
    • F01B9/023—Reciprocating-piston machines or engines characterised by connections between pistons and main shafts and not specific to preceding groups with crankshaft of Bourke-type or Scotch yoke

Definitions

  • the invention relates to a crank loop frame for a crank loop drive of an internal combustion engine for converting a reciprocating movement into a rotary movement.
  • An internal combustion engine of the generic type, the z. B. is described in DE-OS 34 33 510, has at least two opposite piston cylinder units on one axis, the rigidly attached piston rods are coupled via a crank loop drive arranged between the piston cylinder units.
  • the crank-loop drive with which the reciprocating movement of the piston rods is converted into a rotational movement, generally consists of a crank-loop frame, on the slideway webs of which the piston rods are also rigidly fastened on the outside and in the interior of which a sliding block sits, which is connected to the inside by the Slideway webs arranged slideways is guided and in which a crank pin of a crank drive performing the rotational movement is rotatably inserted, the axis of the crank pin extending transversely to the axis of the piston rods.
  • the object of the invention is to provide a crank loop frame that withstands the alternating loads of the internal combustion engine, so that blocking or destruction of the crank loop drive can be avoided.
  • the invention leaves the prescribed way to solve the problem by increasing the stability of the slideway frame webs and finds the solution surprisingly in a homogeneous rapid distribution of heat in the vicinity of the slideway frame webs.
  • this succeeds when using cross-sectionally H-shaped frame webs, in which the center of gravity of the surface lies just above the slideway, so that heat dissipation is distributed almost symmetrically both above and below the slideways for the heat to flow away or for the homogeneous distribution of heat Bridges are available.
  • These are not cooling fins or similar elements for dissipating heat, but webs of sufficient heat capacity for a homogeneous distribution of the heat above and below the slideway frame webs. This homogeneous heat distribution ensures a linear expansion of the slideway frame webs, so that the slideways remain flat and, in particular, deflection of the slideways is avoided.
  • the slideway frame webs For the homogeneous distribution of the heat, it is not absolutely necessary to design the slideway frame webs symmetrically in cross section. It may be appropriate e.g. B. the sliding block-side H-leg or the piston rod-side H-leg higher and / or the legs in the region of the piston rods higher than in the region of the end faces of the frame and / or to create additional masses with additional heat capacity in the region of the end faces, also in to achieve a homogeneous and rapid distribution of the heat flow in these areas.
  • a coating which is poorly heat-conducting can be provided on the slideway surface tung z. B. from Kermaik and / or a plate made of heat poorly conductive material z. B. made of ceramic so that only part of the heat generated flows into the frame.
  • the different thermal conductivity and / or heat capacity can, for. B. with a ceramic coating or a ceramic plate can be ensured that the plate of layers z.
  • ceramic foils of different thermal conductivity and / or heat capacity and / or in the longitudinal extent of platelets of different thermal conductivity and / or heat capacity is built up.
  • Another measure according to the invention to support the Effect of the means according to the invention for acting on the heat distribution in the crank loop frame provides for the tearing off of the lubricating film between slide block and slide track surfaces and the associated breakage and temperature peaks to be avoided, namely by the arrangement of recesses or so-called fittings in the slide track surfaces and / or in the sliding block surfaces facing the slideways, as are generally known between flat sliding elements for the same purpose.
  • crank loop frame With the invention it is thus possible not only to ensure the dimensional stability of the crank loop frame.
  • the invention also allows the crank loop frame to be of a lightweight construction that was previously not possible.
  • An inventive crank loop frame 1 for e.g. A reciprocating piston internal combustion engine described in DE-OS 34 33 510 with a crank loop drive generally has two opposing slideway frame webs 2, 3 and two end webs 4, 5 so that a frame interior 6 is formed.
  • the piston rods 7 of two piston cylinder units of the internal combustion engine, not shown, arranged opposite one another are arranged perpendicularly thereto.
  • the sliding block, not shown, of the crank loop drive sits in a manner known per se in the interior 6 of the crank loop frame 1. It is essential that the slideway frame webs 2, 3 are H-shaped in cross section (FIG.
  • the slideway web 8 is arranged centrally between the leg webs 9, i.e. the height of the leg webs 9 above and below the slideway web 8 is the same. However, this symmetry can be different if the heat flow and / or the heat capacity and / or the heat distribution require it.
  • the slideway webs 8 form the opposing, flat slideways 10 in the frame interior for the sliding block.
  • crank loop frame 1 shown is in two parts, namely divided longitudinally, with one end web half 11 being provided on the end of the slideway frame webs 2, 3 and the end faces 12 of the end web halves 11 being set against one another in the division plane.
  • the slideway frame webs 2, 3 can be assembled by welding, preferably by electron beam welding (FIG. 4). It is also possible to manufacture the crank loop frame 1 in one piece.
  • the crank loop frame 1 is expediently made in two parts.
  • An advantageous combination for the purposes of the invention is shown in FIGS. 1, 2. It is carried out by means of two rectangular metallic tension band rings 13.
  • a U-shaped tension band bearing web 15 with flat outer surfaces 14, which extends in the longitudinal direction of the slideway frame webs 2, 3 is arranged on the front side of each end web half 11.
  • the tension band bearing webs 15 result in a tension band frame which is flat on the outside and on which the tension band is press-fitted.
  • spacer bolts 16 are arranged between the U-legs of adjacent tensioning band bearing webs 15 in the parting plane, which have a support disk 17 at their ends and expediently a bearing disk 18 of smaller diameter adjoining on the outside.
  • semicircular recesses 19 are made in the free end edges 20 of the tension band bearing webs 15.
  • the sliding block sits like in a cage, because the leg webs 9 facing the interior overlap the sliding block laterally.
  • the transition of the leg webs 9 on the interior side to the front web can be made halves 11 may be rounded, so that an oval hole 20a is formed.
  • crank loop frame 1 is open at the end, which favors the heat flow and heat distribution and also supports the lightweight construction.
  • the tension band 13 which is intended to absorb the thermal expansions and to ensure the securing of the bolts, has, in particular, the task of bridging the gap between the slideway frame webs 2, 3 in the division plane and ensuring rapid heat conduction and distribution.
  • the pin 16 also contributes to heat conduction and distribution.
  • a further advantageous assembly of the slideway frame webs 2, 3 takes place according to the embodiment shown in FIG. 3 by means of expansion screws 21.
  • a hole 22 is provided at the end in each slideway web 8, which is penetrated by the screw shaft of the expansion screw 21, the screw head 22 being on the outside of the frame supports the surface of the slideway web 8 and the respective end-side external thread 23 of two oppositely arranged expansion screws 21 engages in a corresponding internal thread of a cuboid connecting block 24, which bridges the division plane.
  • the connecting block 24 expediently rests on the inner surfaces of the end web halves 11 (FIG.
  • edges of semicircular recesses 19a arranged in the end web halves 11 being located in an annular groove 25 of a pin 26 arranged on the outside on the block 24, so that in this embodiment as well mutual displacement of the slideway webs 2,3 is prevented in the division plane.
  • leg webs 9 on the interior side it is advantageous on the inner surface of the leg webs 9 on the interior side to extend in the longitudinal direction, raised, flat guide or support webs 27 for the sliding block To be provided so that the sliding block is guided laterally and the heat transfer is also possible laterally, which favors the rapid heat conduction and distribution (Fig. 4.5).
  • Fig. 6a / b shows that according to the invention in the sliding surfaces 10 of the slideways of the slideway webs 8 and preferably also in the sliding surfaces 28 of the guide webs 27 pits or depressions 29 are introduced, which serve as an oil reservoir and prevent the lubricating film between the Sliding surfaces 10, 28 and the corresponding sliding stone surfaces tears off.
  • the shape, number and arrangement of the fittings 29 are chosen on the basis of empirical determinations. Due to the pitting or the avoidance of the film tear, heat peaks are excluded, which supports the rapid heat conduction and distribution.
  • cross-sectionally U-shaped sliding plates 30 made of a special metal or e.g. made of ceramic, which can be arranged with a contact surface 34 on the slideways 10.
  • They In their interior they have a sliding base surface 31 which extends parallel to the sliding surfaces 10 and supporting webs 27a which are bent at right angles to the interior 6.
  • the supporting webs 27a either form sliding surfaces for the sliding block or are used for the form-fitting mounting of the sliding plates 30 below the supporting webs 27.
  • the fastening of the sliding plates 30 to the slideway frame webs 2, 3 can be arbitrary.
  • the slideway webs 8 are gripped at the end with a bracket 32 or the front web halves 11 are gripped behind with angled tabs 33.
  • the slide plates 30 particularly support the homogeneous heat flow in the frame 1, but can also expediently serve to hinder the heat flow.
  • the construction of the sliding plates 30 can differ zonally in the longitudinal direction, so that the heat flow is influenced in a targeted manner.
  • the sliding plates 30 can, however, also be constructed in layers perpendicular to their longitudinal extension in order to be able to influence the heat flow in a targeted manner in this direction as well.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
EP90121458A 1989-11-27 1990-11-09 Cadre pour le guidage des manetons pour un mécanisme de glissement d'un moteur à combustion interne Expired - Lifetime EP0429918B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8913971U 1989-11-27
DE8913971U DE8913971U1 (de) 1989-11-27 1989-11-27 Kurbelschleifenrahmen für einen Kurbelschleifentrieb einer Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0429918A1 true EP0429918A1 (fr) 1991-06-05
EP0429918B1 EP0429918B1 (fr) 1992-10-07

Family

ID=6844944

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90121458A Expired - Lifetime EP0429918B1 (fr) 1989-11-27 1990-11-09 Cadre pour le guidage des manetons pour un mécanisme de glissement d'un moteur à combustion interne

Country Status (3)

Country Link
US (1) US5131353A (fr)
EP (1) EP0429918B1 (fr)
DE (2) DE8913971U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002027143A1 (fr) 1999-03-26 2002-04-04 Reinhold Ficht Convertisseur de mouvement et procede pour la lubrification de ses surfaces de glissement

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9106047A (pt) * 1990-02-21 1992-11-24 Collins Motor Corp Ltd Movimento rotatorio e alternativo de interconexao
JP3137283B2 (ja) * 1996-08-13 2001-02-19 大吉郎 磯谷 双方向型往復ピストン機関
US7503291B2 (en) * 2005-03-09 2009-03-17 Kiss Engineering, Inc. Reciprocating device with dual chambered cylinders
DE112011102194T5 (de) * 2010-06-29 2013-05-02 Matthew B. Diggs Doppeltwirkende Scotch-Yoke-Anordnung für X-Motoren
WO2012144073A1 (fr) * 2011-04-22 2012-10-26 有限会社タックリサーチ Mécanisme de manivelle à séparation xy, et dispositif d'entraînement équipé de celui-ci
DE102013106755A1 (de) * 2013-06-27 2014-12-31 Bertwin R. Geist Gleitstein für eine Kurbelschlaufen-Hubkolbenmaschine
WO2022256705A1 (fr) * 2021-06-04 2022-12-08 Alfadan, Inc. Unité de cylindre permettant d'éliminer des forces secondaires dans des moteurs à combustion interne en ligne

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526863A1 (fr) * 1982-05-14 1983-11-18 Ficht Gmbh Systeme de coulisse pour un moteur a combustion interne comportant au moins deux cylindres se faisant mutuellement face
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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1311060A (en) * 1919-07-22 Planooraph co
US1287797A (en) * 1918-01-08 1918-12-17 John C Griswold Internal-combustion engine.
US2101556A (en) * 1934-09-08 1937-12-07 Wayne N Morgan Airplane engine
DE902925C (de) * 1944-09-19 1954-01-28 Schmidt Sche Heissdampf Ges M Kurbeltriebwerk, insbesondere fuer schnellaufende Kolbenmaschinen
US4013048A (en) * 1975-12-12 1977-03-22 Reitz Daniel M Bourke type engine
DE3218311A1 (de) * 1982-05-14 1983-11-24 Ficht GmbH, 8011 Kirchseeon Kurbelschleifenanordnung fuer brennkraftmaschinen, insbesondere zweitakt-brennkraftmaschinen mit einander gegenueberliegenden zylindern
US4598672A (en) * 1984-05-29 1986-07-08 R P & M Engines Apparatus for stabilizing the position of a yoke in an internal combustion engine
GB8608237D0 (en) * 1986-04-04 1986-05-08 Collins Motor Corp Ltd Reciprocatory positive displacement machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526863A1 (fr) * 1982-05-14 1983-11-18 Ficht Gmbh Systeme de coulisse pour un moteur a combustion interne comportant au moins deux cylindres se faisant mutuellement face
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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002027143A1 (fr) 1999-03-26 2002-04-04 Reinhold Ficht Convertisseur de mouvement et procede pour la lubrification de ses surfaces de glissement
DE19913889B4 (de) * 1999-03-26 2010-01-21 Reinhold Ficht Hubkolbenmaschine

Also Published As

Publication number Publication date
US5131353A (en) 1992-07-21
EP0429918B1 (fr) 1992-10-07
DE8913971U1 (de) 1991-03-28
DE59000348D1 (de) 1992-11-12

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