WO1990015269A1 - Variably tuned transmission - Google Patents

Variably tuned transmission Download PDF

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Publication number
WO1990015269A1
WO1990015269A1 PCT/LU1990/000001 LU9000001W WO9015269A1 WO 1990015269 A1 WO1990015269 A1 WO 1990015269A1 LU 9000001 W LU9000001 W LU 9000001W WO 9015269 A1 WO9015269 A1 WO 9015269A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier element
sliding
timing transmission
variable timing
carrier
Prior art date
Application number
PCT/LU1990/000001
Other languages
French (fr)
Inventor
Gilbert Lucien Charles Henri Louis VAN AVERMAETE
Original Assignee
Avermaete Gilbert
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 Avermaete Gilbert filed Critical Avermaete Gilbert
Publication of WO1990015269A1 publication Critical patent/WO1990015269A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H35/00—Gearings or mechanisms with other special functional features
    • F16H35/008—Gearings or mechanisms with other special functional features for variation of rotational phase relationship, e.g. angular relationship between input and output shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/34403—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using helically teethed sleeve or gear moving axially between crankshaft and camshaft

Definitions

  • the present invention relates to a variable pitch transmission as described in the Luxembourgish patent of invention No. 84 574 for an internal combustion engine.
  • variable setting transmission which is the subject of the aforementioned patent is designed from an assembly comprising two load-bearing elements and a sliding element, the two gears of which are each supported by a sleeve with two supports (transmission cage), the sliding element sliding on two fixed guide axes.
  • the two load-bearing elements are made in the form of a box to be fixed to the cylinder block of the engine.
  • the object of the present invention relates to the means for producing a variable setting transmission from an assembly comprising a single carrier element and a sliding element, the two gears of which are each supported by a sleeve with a single support. .
  • the guide pins, sliding in the carrier element, are fixed to the sliding element.
  • the carrier element is either made in a single piece, called a monobloc, which is fixed to the cylinder block, or integrated directly into the cylinder block of the engine.
  • the invention applies mainly, but not exclusively, to two- or four-stroke engines with variable compression ratio or compression ignition.
  • a preferred embodiment of the invention particularly relating to a transmission Variable setting sion where the carrier element is made in a single piece, called monobloc, which is fixed cantilever to the cylinder block of the engine.
  • variable-pitch transmission showing: in the foreground : the two guide pins (8, 8 ') and the sliding element (2); in the background: the carrier element (1); between these two elements: the two sleeves (20, 20 ') integral with the gears (3, 4) crossed by the two transmission shafts (16, 17).
  • means are provided for fixing the carrier element (1) inside or outside the cylinder block.
  • part of the perimeter of the carrier element (1) is provided for fixing the carrier element (1) inside or outside the cylinder block.
  • the one-piece part is thinned and provided with orifices (6) allowing fixing by bolting to the cylinder block of the engine.
  • Means are also provided by two guide tubes (7, 7 ') each placed at mid-height at one of the two lateral sides of the carrier element (1). These two guide tubes (7, 7 ') each placed at mid-height at one of the two lateral sides of the carrier element (1). These two guide tubes
  • (7, 7 ') are symmetrical and project perpendicularly from both sides of the planes (12, 12') of the carrier element (D.
  • Means are also provided on the side of the plane (12) of the carrier element (1), where the ends (9, 9 ') of the guide pins (8, 8') have an advantageously reduced and threaded diameter.
  • Each end of these guide pins (8, 8 ') passes through one of the orifices (not visible in the drawing) provided on the two lateral sides extending the plane (11') of the sliding element (2).
  • the two lateral sides of the sliding element (2) are advantageously thinned on the side of the plane (11), so that the ends (9, 9 ') of the guide pins (8, 8') exceed said orifices.
  • the ends (9, 9 ') are tightened by nuts (23, 23') so that the planes (11, 11 ') of the sliding element (2) are placed in parallel with the planes (12, 12' ) of the carrier element (1).
  • Means are also provided on the side of the plane (12 '), where the ends (13, 13') of the two guide pins (8, 8 ') have an excess thickness of the end-of-travel stop.
  • Linear control attachment means can also be provided on the sliding element (2) or on all the ends (9, 9 ') and (13, 13') of the guide pins (8, 8 ').
  • means are also provided in the carrier element (1), by two housing openings (14, 14 ') of bearings (15, 15'). These housing openings
  • means are also provided by two housing openings (21, 21 ') of bearings (22, 22') passing perpendicularly through the planes (11, 11 ') of the sliding element (2).
  • the housings (21, 21 ') are centered on the median line which separates the two lateral orifices of the portable element, at the same distance from the center of the portable element (2) as the distance from the housings (14, 14' ) in the center of the carrier element (1), so as to obtain the alignments, on the one hand, between the housings (14) and (21), and on the other hand, the housings (14 ') and (21 1 ).
  • the two transmission shafts (16), (17) on the side of the plane (12 ') of the carrier element (1) are shaped by straight grooves (18, 18'), so as to allow their coupling to the one of the two engine crankshafts.
  • the two transmission shafts (16), (17), on the side of the plane (12) of the carrier element (1), are shaped by helical grooves respectively (19, 19 '), the winding of the propellers being advantageously headed on the same side.
  • the sleeve (20) is provided with a gear (3), and the sleeve (20 ') with a gear (4).
  • These two aforementioned gears are located between the carrier element (1) and the sliding element (2), so as to form a torque at the same speed of rotation between the two shafts (16 and 17).
  • the sleeves (20, 20 ') integral with the gears respectively (3) and (4) are carried by bearings respectively (22, 22').
  • the two aforementioned bearings are each located in an appropriate housing respectively (21, 21 ') of the sliding element (2).

Abstract

A variably tuned transmission comprising a carrier element (1) consisting of a single piece, attached to the cylinder housing of the engine and from which extend all the other elements of the variably tuned transmission, and a sliding shaft (2) element, each of the two gears of which are supported by a sleeve (20, 20') on a single bearing (22, 22') located in an appropriate housing (21, 21') of the sliding shaft element (2). On both sides of the carrier element (1) are arranged guide tubes (7, 7') on perpendicular axes in relation to the planes (12, 12') in order to receive the guiding pins (8, 8'), one end of each being placed perpendicularly to the planes (11, 11') of the sliding shaft element (2). The carrier element (1) and the sliding shaft element (2) each have two openings (14, 14' and 21, 21') for the corresponding bearings (15, 15' and 22, 22') which support a transmission shaft (16 and 17) crossing the carrier element (1) and the sliding element (2), on the side of the plane (12), with helical grooves (19 and 19') in which the sleeves (20, 20') with equivalent grooves slide.

Description

Transmission à calage variableVariable timing transmission
La présente invention concerne une transmission à calage variable telle que décrite dans le brevet d'invention luxembour¬ geois n° 84 574 pour un moteur à explosion.The present invention relates to a variable pitch transmission as described in the Luxembourgish patent of invention No. 84 574 for an internal combustion engine.
La transmission à calage variable faisant l'objet du brevet précité, est conçue à partir d'un ensemble comprenant deux éléments porteurs et un élément baladeur, dont les deux engrenages sont chacun supportés par un manchon à deux supports (cage de la transmission), l'élément baladeur coulis- sant sur deux axes guides fixes. Les deux éléments porteurs sont constitués en forme de boîtier à fixer au carter cylindre du moteur.The variable setting transmission which is the subject of the aforementioned patent is designed from an assembly comprising two load-bearing elements and a sliding element, the two gears of which are each supported by a sleeve with two supports (transmission cage), the sliding element sliding on two fixed guide axes. The two load-bearing elements are made in the form of a box to be fixed to the cylinder block of the engine.
Le but de la présente invention concerne les moyens de réalisa- tion d'une transmission à calage variable à partir d'un ensemble comprenant un seul élément porteur et un élément baladeur, dont les deux engrenages sont chacun supportés par un manchon à un seul support. Les axes guides, coulissant dans l'élément porteur, sont fixés à l'élément baladeur. L'élément porteur est soit réalisé en une seule pièce, dite monobloc, qui se fixe au carter cylindre, soit intégré directement au carter cylindre du moteur.The object of the present invention relates to the means for producing a variable setting transmission from an assembly comprising a single carrier element and a sliding element, the two gears of which are each supported by a sleeve with a single support. . The guide pins, sliding in the carrier element, are fixed to the sliding element. The carrier element is either made in a single piece, called a monobloc, which is fixed to the cylinder block, or integrated directly into the cylinder block of the engine.
Ces nouveaux moyens ont l'avantage d'apporter à la transmis- sion à calage variable une plus grande rigidité, un nombre plus réduit de pièces usinées et un ensemble moins volumineux.These new means have the advantage of providing the variable-pitch transmission with greater rigidity, a smaller number of machined parts and a less bulky assembly.
L'invention s'applique principalement, mais non exclusi ement, aux moteurs à deux ou quatre temps, à rapport volumétrique variable à allumage par compression ou à allumage commandé.The invention applies mainly, but not exclusively, to two- or four-stroke engines with variable compression ratio or compression ignition.
On a représenté, à titre d'exemple, un mode de réalisation préféré de l'invention, particulièrement relatif à une transmis- sion à calage variable où l'élément porteur est réalisé en une seule pièce, dite monobloc, qui se fixe en porte à faux au carter cylindre du moteur.There is shown, by way of example, a preferred embodiment of the invention, particularly relating to a transmission Variable setting sion where the carrier element is made in a single piece, called monobloc, which is fixed cantilever to the cylinder block of the engine.
II pourra, de toute façon, être bien compris à l'aide du complément de description qui suit, ainsi que du dessin, ci-annexé, d'une vue en perspective d'une transmission à calage variable montrant : à l'avant plan : les deux axes guides (8, 8') et l'élément baladeur (2) ; à l'arrière plan : l'élément porteur (1) ; entre ces deux éléments : les deux manchons (20, 20' ) solidaires des engrenages ( 3, 4) traversés par les deux arbres de transmission (16, 17).In any case, it can be clearly understood with the aid of the additional description which follows, as well as of the attached drawing, of a perspective view of a variable-pitch transmission showing: in the foreground : the two guide pins (8, 8 ') and the sliding element (2); in the background: the carrier element (1); between these two elements: the two sleeves (20, 20 ') integral with the gears (3, 4) crossed by the two transmission shafts (16, 17).
Conformément à l'invention, des moyens sont prévus pour fixer l'élément porteur (1) à l'intérieur ou à l'extérieur du carter cylindre. A cet effet, une partie du pourtourAccording to the invention, means are provided for fixing the carrier element (1) inside or outside the cylinder block. For this purpose, part of the perimeter
(5) de la pièce monobloc est amincie et pourvue d'orifices (6) permettant la fixation par boulonnage au carter cylindre du moteur.(5) of the one-piece part is thinned and provided with orifices (6) allowing fixing by bolting to the cylinder block of the engine.
Des moyens sont également prévus par deux tubes de guidage (7, 7') placés chacun à mi-hauteur à l'un des deux côtés latéraux de l'élément porteur (1). Ces deux tubes de guidageMeans are also provided by two guide tubes (7, 7 ') each placed at mid-height at one of the two lateral sides of the carrier element (1). These two guide tubes
(7, 7') sont symétriques et dépassent perpendiculairement les deux côtés des plans (12, 12') de l'élément porteur (D.(7, 7 ') are symmetrical and project perpendicularly from both sides of the planes (12, 12') of the carrier element (D.
D'autres moyens sont aussi prévus pour que les dépassements des tubes de guidage (7, 7'), du côté du plan (12) de l'élément porteur (1), soient déterminés à une longueur suffisante permettant l'enclavement des deux engrenages (3, 4) lorsque le contact est établi entre l'élément baladeur (2) et l'élément porteur (1).Other means are also provided so that the protrusions of the guide tubes (7, 7 ′), on the plane side (12) of the carrier element (1), are determined at a sufficient length allowing the confinement of the two gears (3, 4) when contact is established between the sliding element (2) and the carrier element (1).
Des moyens sont également prévus du côté du plan (12) de l'élément porteur (1), où les extrémités (9, 9') des axes guides (8, 8') ont un diamètre avantageusement réduit et fileté. Chaque extrémité de ces axes guides (8, 8') passe à travers un des orifices (non visible sur le dessin) prévus des deux côtés latéraux prolongeant le plan (11') de l'élément baladeur (2). Les deux côtés latéraux de l'élément baladeur (2) sont avantageusement amincis du côté du plan (11), de manière que les extrémités (9, 9') des axes guides (8, 8') dépassent lesdits orifices. Les extrémités (9, 9') sont serrées par des écrous (23, 23') de manière que les plans (11, 11') de l'élément baladeur (2) soient mis en parallèle avec les plans (12, 12') de l'élément porteur (1).Means are also provided on the side of the plane (12) of the carrier element (1), where the ends (9, 9 ') of the guide pins (8, 8') have an advantageously reduced and threaded diameter. Each end of these guide pins (8, 8 ') passes through one of the orifices (not visible in the drawing) provided on the two lateral sides extending the plane (11') of the sliding element (2). The two lateral sides of the sliding element (2) are advantageously thinned on the side of the plane (11), so that the ends (9, 9 ') of the guide pins (8, 8') exceed said orifices. The ends (9, 9 ') are tightened by nuts (23, 23') so that the planes (11, 11 ') of the sliding element (2) are placed in parallel with the planes (12, 12' ) of the carrier element (1).
Ces nouveaux moyens permettent le coulissement des axes guides (8, 8') dans les tubes de guidage (7, 7'), afin de rapprocher ou d'éloigner l'élément baladeur (2) de l'élément porteur ( 1 ) .These new means allow the guide pins (8, 8 ') to slide in the guide tubes (7, 7'), in order to bring the sliding element (2) closer or further away from the carrier element (1).
Des moyens sont aussi prévus du côté du plan (12'), où les extrémités (13, 13') des deux axes guides (8, 8') ont une surépaisseur d'arrêt de fin de course.Means are also provided on the side of the plane (12 '), where the ends (13, 13') of the two guide pins (8, 8 ') have an excess thickness of the end-of-travel stop.
Des moyens d'attache de commande linéaire peuvent également être prévus sur l'élément baladeur (2) ou sur toutes les extrémités (9, 9') et (13, 13') des axes guides (8, 8').Linear control attachment means can also be provided on the sliding element (2) or on all the ends (9, 9 ') and (13, 13') of the guide pins (8, 8 ').
Suivant l'invention, des moyens sont aussi prévus dans l'élément porteur (1), par deux orifices de logement (14, 14') de roulements (15, 15'). Ces orifices de logementAccording to the invention, means are also provided in the carrier element (1), by two housing openings (14, 14 ') of bearings (15, 15'). These housing openings
(14, 14') traversent perpendiculairement les plans (12, 12') de l'élément porteur (1), sur la ligne médiane qui sépare les deux côtés formés par les tubes de guidage (7, 7'); ces orifices de logement (14, 14') sont placés à égale distance du centre de l'élément porteur (1). Dans l'élément porteur (1), le roulement (15) dans le logement (14) supporte un arbre de transmission (16), et le roulement (15') dans le logement (14') supporte un arbre de transmission (17).(14, 14 ') cross perpendicularly the planes (12, 12') of the carrier element (1), on the median line which separates the two sides formed by the guide tubes (7, 7 '); these housing orifices (14, 14 ') are placed at equal distance from the center of the carrier element (1). In the carrier element (1), the bearing (15) in the housing (14) supports a drive shaft (16), and the bearing (15 ') in the housing (14 ') supports a transmission shaft (17).
Suivant l'invention, des moyens sont encore prévus par deux orifices de logement (21, 21') de roulements (22, 22') traversant perpendiculairement les plans (11, 11') de l'élément baladeur (2). Les logements (21, 21') sont centrés sur la ligne médiane qui sépare les deux orifices latéraux de l'élément baladeur, à une même distance du centre de l'élément baladeur (2) que la distance des logements (14, 14') au centre de l'élément porteur (1), de façon à obtenir les alignements, d'une part, entre les logements (14) et (21), et d'autre part, les logements (14') et (211). Les deux arbres de transmission (16), (17) du côté du plan (12') de l'élément porteur (1), sont façonnés par des cannelures droites (18, 18'), de manière à permettre leur accouplement à l'un des deux vilebrequins du moteur.According to the invention, means are also provided by two housing openings (21, 21 ') of bearings (22, 22') passing perpendicularly through the planes (11, 11 ') of the sliding element (2). The housings (21, 21 ') are centered on the median line which separates the two lateral orifices of the portable element, at the same distance from the center of the portable element (2) as the distance from the housings (14, 14' ) in the center of the carrier element (1), so as to obtain the alignments, on the one hand, between the housings (14) and (21), and on the other hand, the housings (14 ') and (21 1 ). The two transmission shafts (16), (17) on the side of the plane (12 ') of the carrier element (1), are shaped by straight grooves (18, 18'), so as to allow their coupling to the one of the two engine crankshafts.
Les deux arbres de transmission (16), (17), du côté du plan (12) de l'élément porteur (1), sont façonnés par des cannelures hélicoïdales respectivement (19, 19'), l'enroulement des hélices étant avantageusement dirigé du même côté.The two transmission shafts (16), (17), on the side of the plane (12) of the carrier element (1), are shaped by helical grooves respectively (19, 19 '), the winding of the propellers being advantageously headed on the same side.
Sur les cannelures hé! icoVdales (19, 19') des arbres de transmission (16) et (17) coulissent des manchons respectivement (20, 20') à cannelures équivalentes. Le manchon (20) est pourvu d'un engrenage (3), et le manchon (20') d'un engrenage (4). Ces deux engrenages précités sont situés entre l'élément porteur (1) et l'élément baladeur (2), de façon à former un couple à même vitesse de rotation entre les deux arbres (16 et 17). Les manchons (20, 20') solidaires des engrenages respectivement (3) et (4) sont portés par des roulements respectivement (22, 22'). Les deux roulements précités sont chacun situés dans un logement approprié respectivement (21, 21') de l'élément baladeur (2).On the grooves hey! icoVdales (19, 19 ') of the drive shafts (16) and (17) slide sleeves respectively (20, 20') with equivalent grooves. The sleeve (20) is provided with a gear (3), and the sleeve (20 ') with a gear (4). These two aforementioned gears are located between the carrier element (1) and the sliding element (2), so as to form a torque at the same speed of rotation between the two shafts (16 and 17). The sleeves (20, 20 ') integral with the gears respectively (3) and (4) are carried by bearings respectively (22, 22'). The two aforementioned bearings are each located in an appropriate housing respectively (21, 21 ') of the sliding element (2).
A chaque déplacement de l'élément baladeur (2) par rapport à l'élément porteur (1), il en résulte un mouvement simultané de translation et de rotation des manchons (20,20'). Ces derniers forment sur les cannelures hélicoïdales correspondantes respectivement (19, 19') un nouveau calage angulaire entre les deux engrenages (3) et (4) solidaires des deux arbres de transmission respectivement (16) et (17) pendant leur mouvement de rotation. Each time the sliding element (2) is moved relative to to the carrier element (1), this results in a simultaneous movement of translation and rotation of the sleeves (20,20 '). The latter form on the corresponding helical grooves respectively (19, 19 ') a new angular setting between the two gears (3) and (4) integral with the two transmission shafts respectively (16) and (17) during their rotational movement.

Claims

Revendications Claims
1. Transmission à calage variable caractérisée en ce qu'elle consiste en un ensemble comprenant un élément porteur1. Variable timing transmission characterized in that it consists of an assembly comprising a carrier element
(1) et un élément baladeur (2), dont les deux engrenages (3) et (4) sont supportés chacun par un manchon (20, 20') à un seul support, et en ce que les axes guides (8, 8'), coulissant dans l'élément porteur (1), sont fixés latéralement à l'élément baladeur (2), de manière à permettre de rapprocher ou d'éloigner ces éléments (1) et (2) entre eux.(1) and a sliding element (2), the two gears (3) and (4) of which are each supported by a sleeve (20, 20 ') with a single support, and in that the guide pins (8, 8 '), sliding in the carrier element (1), are fixed laterally to the sliding element (2), so as to allow these elements (1) and (2) to be brought closer or further apart.
2. Transmission à calage variable suivant la revendication2. Variable timing transmission according to claim
1, caractérisée en ce que sur chacun des côtés latéraux de l'élément porteur (1) est disposé à mi-hauteur un tube de guidage (7, 7') axé perpendiculairement par rapport aux plans (12, 12'), pour recevoir l'axe guide correspondant (8, 8') dont l'extrémité filetée (9, 9') traverse l'orifice prévu dans une prolongation latérale de l'élément baladeur1, characterized in that on each of the lateral sides of the support element (1) is disposed at mid-height a guide tube (7, 7 ') oriented perpendicularly to the planes (12, 12'), for receiving the corresponding guide axis (8, 8 ') whose threaded end (9, 9') passes through the orifice provided in a lateral extension of the sliding element
(2) et un écrou de serrage (23, 23') destiné à la mise en parallèle des pians (11, 11') de l'élément baladeur (2) avec ceux des plans (12, 12') de l'élément porteur (1).(2) and a clamping nut (23, 23 ') intended for placing the planes (11, 11') of the sliding element (2) in parallel with those of the planes (12, 12 ') of the element carrier (1).
3. Transmission à calage variable suivant les revendications 1 à 2, caractérisée en ce que les tubes de guidage (7, 7') sont symétriques et font saillie parallèlement à l'intérieur de l'ensemble au-delà de l'élément porteur (1) sur une longueur appropriée pour permettre l'enclavement des deux engre¬ nages (3) et (4), lorsque le contact est établi entre l'élément ba¬ ladeur (2) et l'élément porteur (1).3. Variable timing transmission according to claims 1 to 2, characterized in that the guide tubes (7, 7 ') are symmetrical and protrude parallel inside the assembly beyond the carrier element ( 1) over an appropriate length to allow the enclavement of the two engre¬ nages (3) and (4), when the contact is established between the ba¬ ladeur element (2) and the carrier element (1).
4. Transmission à calage variable suivant les revendications 1 à 3, caractérisée en ce que les tubes de guidages (7, 7') font saillie parallèlement à l'extérieur de l'ensemble sur une longueur appropriée afin d'obtenir une portée suffisante des axes guide (8,8'). Ces derniers sont pourvus du côté du plan (12') d'une surépaisseur (13, 13') d'arrêt de fin de course.4. Variable timing transmission according to claims 1 to 3, characterized in that the guide tubes (7, 7 ') protrude parallel to the outside of the assembly over an appropriate length in order to obtain a sufficient range of guide pins (8.8 '). These are provided on the side of the plan (12 ′) of an additional thickness (13, 13 ′) for end-of-travel stop.
5. Transmission à calage variable suivant les revendications 1 à 4, caractérisée en ce que l'élément porteur (1) et l'élément baladeur (2) présentent chacun suivant une ligne médiane par rapport aux axes guides (8, 8') deux orifices de logement superposés (14, 14') et (21, 21') pour des roulements (15, 15') et (22, 22') supportant un arbre de transmission (16 respectivement 17) bloqué axialement sur le roulement (15 respectivement 15'), ces deux arbres étant façonnés du côté de la face externe (12') de l'élément porteur (1) de cannelures droites (18, 18') et du côté de la face interne (12) de cannelures hélicoïdales (19, 19'), à enroulement d'hélices de même direction, sur lesquelles coulissent des manchons (20, 20') à cannelures équivalentes, le manchon (20) étant pourvu de l'engrenage (3) et le manchon (20') de l'engrenage (4), lesdits engrenages (3) et (4) étant situés à l'intérieur de l'ensemble entre l'élément porteur (1) et l'élément baladeur (2) et lesdits manchons (20, 20') étant portés et bloqués axialement dans l'élément baladeur (2) par l'intermédiaire des roulements (22, 22').5. Variable timing transmission according to claims 1 to 4, characterized in that the carrier element (1) and the sliding element (2) each have a center line with respect to the guide axes (8, 8 ') two superimposed housing holes (14, 14 ') and (21, 21') for bearings (15, 15 ') and (22, 22') supporting a drive shaft (16 respectively 17) locked axially on the bearing (15 respectively 15 '), these two shafts being shaped on the side of the external face (12') of the carrier element (1) of straight grooves (18, 18 ') and on the side of the internal face (12) of helical grooves (19, 19 '), winding helices of the same direction, on which sleeves (20, 20') with equivalent grooves slide, the sleeve (20) being provided with the gear (3) and the sleeve (20 ') of the gear (4), said gears (3) and (4) being located inside the assembly between the carrier element (1) and the sliding element (2) and said sleeves (20 , 20 ') was nt carried and locked axially in the sliding element (2) by means of the bearings (22, 22 ').
6. Transmission à calage variable suivant l'une quelconque des revendications 1 à 5, caractérisée en ce que l'élément porteur (1) est réalisé en une seule pièce monobloc fixée au carter cylindre du moteur ; l'élément porteur (1) suppor¬ tant en porte à faux tous les autres éléments faisant partie de la transmission à calage variable.6. Variable timing transmission according to any one of claims 1 to 5, characterized in that the carrier element (1) is made in a single piece fixed to the cylinder housing of the engine; the carrier element (1) suppor¬ as cantilevered all the other elements forming part of the variable-pitch transmission.
7. Transmission à calage variable suivant l'une quelconque des revendications de 1 à 5, caractérisée en ce que l'élément porteur (1) fait partie intégrante du carter cylindre du moteur et que tous les éléments de la transmission à calage variable, autres que l'élément porteur (1), sont supportés en porte a faux directement par le carter cylindre du moteur. 7. Variable timing transmission according to any one of claims 1 to 5, characterized in that the carrier element (1) is an integral part of the engine crankcase and that all the elements of the variable timing transmission, other that the carrier element (1), are supported in cantilever directly by the cylinder block of the engine.
PCT/LU1990/000001 1989-05-30 1990-05-25 Variably tuned transmission WO1990015269A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU87530 1989-05-30
LU87530A LU87530A1 (en) 1989-05-30 1989-05-30 TIMING VARIATION TRANSMISSION

Publications (1)

Publication Number Publication Date
WO1990015269A1 true WO1990015269A1 (en) 1990-12-13

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ID=19731167

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/LU1990/000001 WO1990015269A1 (en) 1989-05-30 1990-05-25 Variably tuned transmission

Country Status (6)

Country Link
EP (1) EP0429579A1 (en)
JP (1) JPH04501909A (en)
AU (1) AU5638490A (en)
CA (1) CA2033197A1 (en)
LU (1) LU87530A1 (en)
WO (1) WO1990015269A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE368775C (en) * 1923-02-09 Samuel Haltenberger Automatic altitude control device for aircraft engines
US1885796A (en) * 1930-02-15 1932-11-01 Eoulet Georges Valve operating mechanism
US3313280A (en) * 1965-04-16 1967-04-11 Automobile Racing Club Of Okla Variable valve timing mechanism
EP0286055A2 (en) * 1987-04-02 1988-10-12 Candy Mfg. Co., Inc. Phase adjusting mechanism

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE368775C (en) * 1923-02-09 Samuel Haltenberger Automatic altitude control device for aircraft engines
US1885796A (en) * 1930-02-15 1932-11-01 Eoulet Georges Valve operating mechanism
US3313280A (en) * 1965-04-16 1967-04-11 Automobile Racing Club Of Okla Variable valve timing mechanism
EP0286055A2 (en) * 1987-04-02 1988-10-12 Candy Mfg. Co., Inc. Phase adjusting mechanism

Also Published As

Publication number Publication date
EP0429579A1 (en) 1991-06-05
CA2033197A1 (en) 1990-12-01
LU87530A1 (en) 1989-09-12
AU5638490A (en) 1991-01-07
JPH04501909A (en) 1992-04-02

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