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FR2981698A1 - Device for guiding piston of internal combustion heat engine, has sliding-door fixed under piston by rivets, welding and screws or directly fixed under piston, where door is equipped in lower part of two rings parallel to piston or cylinder - Google Patents

Device for guiding piston of internal combustion heat engine, has sliding-door fixed under piston by rivets, welding and screws or directly fixed under piston, where door is equipped in lower part of two rings parallel to piston or cylinder Download PDF

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Publication number
FR2981698A1
FR2981698A1 FR1103204A FR1103204A FR2981698A1 FR 2981698 A1 FR2981698 A1 FR 2981698A1 FR 1103204 A FR1103204 A FR 1103204A FR 1103204 A FR1103204 A FR 1103204A FR 2981698 A1 FR2981698 A1 FR 2981698A1
Authority
FR
France
Prior art keywords
piston
door
fixed under
cylinder
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.)
Pending
Application number
FR1103204A
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French (fr)
Inventor
Jacques Barreau
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Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR1103204A priority Critical patent/FR2981698A1/en
Publication of FR2981698A1 publication Critical patent/FR2981698A1/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/32Engines characterised by connections between pistons and main shafts and not specific to preceding main groups
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01BMACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B9/00Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00
    • F01B9/02Reciprocating-piston machines or engines characterised by connections between pistons and main shafts, not specific to groups F01B1/00 - F01B7/00 with crankshaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/06Engines with means for equalising torque

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

The device has a sliding door (3) rigidly fixed under a piston (1) by rivets, welding and screws or directly fixed under the piston, where the door is equipped in a lower part of two rings (8) arranged parallel to the piston or a cylinder (6). Two rigid guides (4) are fixed in parallel to the piston/cylinder through a crankshaft (5) in a crankcase (7). The door passes between two piston rods (2). The rings of the door slide freely along the piston on the rigid guides.

Description

- 1 - 1 Guide piston pour moteurs thermiques alternatifs. La présente invention s'applique aux pistons des moteurs thermiques alternatifs à combustion interne à deux temps où quatre temps. - 1 - 1 piston guide for reciprocating engines. The present invention applies to pistons of internal combustion engines with two-stroke or four-stroke internal combustion engines.

Sur un moteur à combustion interne actuel, la recherche de puissance passe (pour une même cylindrée considérée) par une augmentation de l'alésage afin d'obtenir une course plus courte favorisant la vitesse de rotation et donc la multiplication des temps moteurs (explosions) et par la même de la puissance, tout en augmentant aussi peu que possible la vitesse linéaire du piston au delà des valeurs compatibles avec l'état actuel de la métallurgie et des éventuels traitements thermiques associés. soit aujourd'hui environ 25 m/s (cas des moteurs dit "carrés" et "super-carrés"). Cette architecture nécessite donc des pistons à fort diamètre mais à faible hauteur de jupe pour ne pas en affecter le poids, mais entraîne une forte inclinaison de la bielle à la mi-course, occasionnant une rapide usure de l'ensemble cylindre/piston. Le système selon l'invention consiste à répartir la fonction de guidage ordinairement dévolue uniquement à la jupe du piston en ajoutant un "porte- coulisseaux"(3) réalisé dans un matériau aussi léger que possible (aluminium, téflon) fixé rigidement sous la calotte du piston (1) par son extrémité haute au niveau du pied de bielle (2). Ce "porte-coulisseaux" (3) comporte à ses extrémités basses deux bagues cylindriques (8) parallèles à l'axe du (des) cylindre(s) (6) coulissant chacune sur deux guides (4) rigides fixés parallèlement à l'axe du (des) cylindre(s)(6) dans les carters moteurs (7). Deux cas sont possibles, soit un moteur classique ne comportant qu'une seule bielle (2) par cylindre/piston (1)(6), auquel cas le "porte-coulisseaux" (3) est dédoublé pour "encager" l'unique 30 bielle (2) sans entraver son mouvement. (figures de 1/16 à 8/16) Soit le moteur dispose de deux bielles (2) juxtaposées par cylindre/piston (6)(1) ce qui permet d'adopter "un porte-coulisseaux" (3) simple, passant entre les deux bielles (2). (figures de 9/16 à 16/16). 35 On constate donc que les surfaces de guidage se trouvent aux - 2 - 1 extrémités du dispositif, d'une part la jupe du piston dans la partie haute, réduite à un simple "porte segments" (si le moteur en comporte) et d'autre part les deux bagues (8) du "porte-coulisseaux" (3) dans la partie basse. L'espacement de ses deux surfaces de guidages pouvant aisément atteindre la valeur de l'alésage on obtient une bonne maitrise des forces longitudinales générées par les mouvements de la où des bielle(s) (2) et donc un meilleur guidage du piston (1). On a current internal combustion engine, the search for power passes (for the same cylinder considered) an increase in the bore to obtain a shorter stroke favoring the speed of rotation and therefore the multiplication of engine times (explosions) and by the same power, while increasing as little as possible the linear velocity of the piston beyond the values compatible with the current state of the metallurgy and any associated heat treatments. today is about 25 m / s (the case of so-called "square" and "super-square" engines). This architecture therefore requires pistons with large diameter but low skirt height to not affect the weight, but causes a steep inclination of the rod at the halfway, causing a rapid wear of the cylinder / piston assembly. The system according to the invention consists in distributing the guiding function ordinarily assigned solely to the skirt of the piston by adding a "slider" (3) made of a material as light as possible (aluminum, Teflon) rigidly fixed under the cap piston (1) by its high end at the small end (2). This "slider carrier" (3) has at its low ends two cylindrical rings (8) parallel to the axis of the (the) cylinder (s) (6) each sliding on two rigid guides (4) fixed parallel to the axis of the cylinder (s) (6) in the crankcases (7). Two cases are possible, ie a conventional engine having only one connecting rod (2) per cylinder / piston (1) (6), in which case the "slider carrier" (3) is split to "encage" the unique 30 connecting rod (2) without hindering its movement. (Figures 1/16 to 8/16) Either the engine has two rods (2) juxtaposed per cylinder / piston (6) (1) which allows to adopt "a carrier-slides" (3) simple, passing between the two connecting rods (2). (Figures 9/16 to 16/16). It can therefore be seen that the guide surfaces are located at one end of the device, on the one hand the skirt of the piston in the upper part, reduced to a simple "segment door" (if the engine has them) and the other two rings (8) of the "slider holder" (3) in the lower part. The spacing of its two guide surfaces can easily reach the value of the bore is obtained a good control of the longitudinal forces generated by the movements of the rod (s) (2) and therefore a better guidance of the piston (1). ).

Le "porte-coulisseaux" (3) en question doit pouvoir travailler de sorte à ne pas entrée en contact avec la base du cylindre (6) lorsque le piston (1) (auquel il est fixé) est au point mort haut d'une part et ne pas entrée en contact dans sa partie centrale basse avec le maneton lorsque le piston (1) est à mi-course (90°), (position où 15 la (les) bielle(s) par son (leur) inclinaison maximum offre(nt) sa (leur) plus faible distance géométrique projetée entre l'axe du pied de bielle et l'axe de la tête de bielle). Par ailleurs, il doit permettre à la (aux) bielle(s) (2) de se mouvoir librement (sans contact) dans le sens longitudinal et donc de respecter un espace minimal 20 mais suffisant avec les deux guides rigides (4) fixés parallèlement à l'axe du (des) cylindre(s)(6) dans les carters moteurs (7). (figures 7/16 et 15/16). The "slider carrier" (3) in question must be able to work in such a way that it does not come into contact with the cylinder base (6) when the piston (1) (to which it is attached) is at the top dead center of a has not come into contact in its lower central part with the crankpin when the piston (1) is halfway (90 °), (position where the rod (s) by its (their) maximum inclination offers (s) its (their) smaller geometric distance projected between the axis of the small end and the axis of the big end). Furthermore, it must allow the rod (s) (2) to move freely (without contact) in the longitudinal direction and thus to respect a minimum space 20 but sufficient with the two rigid guides (4) fixed in parallel to the axis of the cylinder (s) (6) in the engine casings (7). (Figures 7/16 and 15/16).

Claims (7)

REVENDICATIONS(1) Dispositif pour guider le(s) piston(s) des moteurs thermiques alternatifs à combustion interne à deux temps où quatre temps, Caractérisé en ce qu'il comporte un "porte-coulisseaux" (3) fixé rigidement sous le piston (1) par rivets, soudure, vis où directement 5 usiné avec celui-ci. CLAIMS (1) Device for guiding the piston (s) of internal combustion engines with two-stroke or four-stroke internal combustion, characterized in that it comprises a "slider-carrier" (3) rigidly fixed under the piston (1) by rivets, welding, screws where directly 5 machined with it. 2) Dispositif selon la revendication 1 comportant un "porte-coulisseaux" (3) équipé dans sa partie inférieure de deux bagues (8) parallèles au couple piston/cylindre (1) (6). 2) Device according to claim 1 comprising a "slider holder" (3) equipped in its lower part with two rings (8) parallel to the piston / cylinder pair (1) (6). 3) Dispositif selon la revendication 1 comportant deux guides 10 rigides (4) fixés parallèlements au couple piston/cylindre (1) (6) dans le carter moteur (7) au niveau de vilebrequin (5). 3) Device according to claim 1 comprising two rigid guides (4) fixed parallel to the piston / cylinder pair (1) (6) in the crankcase (7) at the crankshaft (5). 4) Dispositif selon les revendications précédantes permettant aux deux bagues (8) du "porte-coulisseaux" (3) de coulisser librement en même temps que le piston (1) sur les guides rigides (4) 15 4) Device according to the preceding claims allowing the two rings (8) of the "slider holder" (3) to slide freely at the same time as the piston (1) on the rigid guides (4) 15 5) Dispositif selon les revendications précédantes guidant le piston (1) en deux zones distinctes le plus espacées possible. 5) Device according to the preceding claims guiding the piston (1) in two separate areas as far apart as possible. 6) Dispositif selon les revendications 1 à 4 caractérisé en ce que le moteur est un moteur classique comportant une seule bielle par piston (2), dans ce cas le porte coulisseaux (3) "encage" 20 l'unique bielle (2). 6) Device according to claims 1 to 4 characterized in that the engine is a conventional engine having a single rod by piston (2), in this case the slider door (3) "cages" 20 the single rod (2). 7) Dispositif selon les revendications 1 à 4 caractérisé pour un moteur comportant deux bielles par piston (2), le "porte coulisseaux" (3) passe alors entre les deux bielles (2) 7) Device according to claims 1 to 4 characterized for a motor having two connecting rods per piston (2), the "sliding door" (3) then passes between the two connecting rods (2)
FR1103204A 2011-10-20 2011-10-20 Device for guiding piston of internal combustion heat engine, has sliding-door fixed under piston by rivets, welding and screws or directly fixed under piston, where door is equipped in lower part of two rings parallel to piston or cylinder Pending FR2981698A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1103204A FR2981698A1 (en) 2011-10-20 2011-10-20 Device for guiding piston of internal combustion heat engine, has sliding-door fixed under piston by rivets, welding and screws or directly fixed under piston, where door is equipped in lower part of two rings parallel to piston or cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1103204A FR2981698A1 (en) 2011-10-20 2011-10-20 Device for guiding piston of internal combustion heat engine, has sliding-door fixed under piston by rivets, welding and screws or directly fixed under piston, where door is equipped in lower part of two rings parallel to piston or cylinder

Publications (1)

Publication Number Publication Date
FR2981698A1 true FR2981698A1 (en) 2013-04-26

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Family Applications (1)

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FR1103204A Pending FR2981698A1 (en) 2011-10-20 2011-10-20 Device for guiding piston of internal combustion heat engine, has sliding-door fixed under piston by rivets, welding and screws or directly fixed under piston, where door is equipped in lower part of two rings parallel to piston or cylinder

Country Status (1)

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FR (1) FR2981698A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220389953A1 (en) * 2021-06-04 2022-12-08 Alfadan, Inc. Cylinder unit for eliminating secondary forces in inline internal combustion engines

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035562A1 (en) * 1990-11-08 1992-05-14 Zikeli Friedrich Dipl Ing Th Piston cross thrust ring and crank slide - involves ring and slide assemblable on pins on body of crankshaft
JP2001303901A (en) * 2000-04-25 2001-10-31 Mitsubishi Heavy Ind Ltd Diesel engine
WO2007036007A1 (en) * 2005-09-30 2007-04-05 Boyan Kirilov Bahnev Piston cam engine
CN201318216Y (en) * 2008-12-22 2009-09-30 靳北彪 External connecting bar engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4035562A1 (en) * 1990-11-08 1992-05-14 Zikeli Friedrich Dipl Ing Th Piston cross thrust ring and crank slide - involves ring and slide assemblable on pins on body of crankshaft
JP2001303901A (en) * 2000-04-25 2001-10-31 Mitsubishi Heavy Ind Ltd Diesel engine
WO2007036007A1 (en) * 2005-09-30 2007-04-05 Boyan Kirilov Bahnev Piston cam engine
CN201318216Y (en) * 2008-12-22 2009-09-30 靳北彪 External connecting bar engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220389953A1 (en) * 2021-06-04 2022-12-08 Alfadan, Inc. Cylinder unit for eliminating secondary forces in inline internal combustion engines
US11885378B2 (en) * 2021-06-04 2024-01-30 Alfadan, Inc. Cylinder unit for eliminating secondary forces in inline internal combustion engines

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