WO2016139110A1 - Transmission à variation continue à commande améliorée - Google Patents

Transmission à variation continue à commande améliorée Download PDF

Info

Publication number
WO2016139110A1
WO2016139110A1 PCT/EP2016/053922 EP2016053922W WO2016139110A1 WO 2016139110 A1 WO2016139110 A1 WO 2016139110A1 EP 2016053922 W EP2016053922 W EP 2016053922W WO 2016139110 A1 WO2016139110 A1 WO 2016139110A1
Authority
WO
WIPO (PCT)
Prior art keywords
transmission according
conical disk
actuator
support wall
axially movable
Prior art date
Application number
PCT/EP2016/053922
Other languages
German (de)
English (en)
Inventor
Gerhard Wetzel
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2016139110A1 publication Critical patent/WO2016139110A1/fr

Links

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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
    • F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
    • F16H63/067—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions mechanical actuating means
    • 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
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/32—Friction members
    • F16H55/52—Pulleys or friction discs of adjustable construction
    • F16H55/56—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable
    • F16H55/563—Pulleys or friction discs of adjustable construction of which the bearing parts are relatively axially adjustable actuated by centrifugal masses
    • 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
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/04—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism
    • F16H63/06—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions
    • F16H63/062—Final output mechanisms therefor; Actuating means for the final output mechanisms a single final output mechanism being moved by a single final actuating mechanism the final output mechanism having an indefinite number of positions electric or electro-mechanical actuating means

Definitions

  • the present invention relates to a CVT transmission (continuously variable transmission) with a significantly improved controllability and controllability.
  • CVT transmissions are different from the prior art
  • two-wheelers tricycles, so-called tuk-tuks, snowmobiles, quads or
  • centrifugal governors are often used to adjust a position of a belt on a cone pulley pair. Depending on the speed centrifugal weights of the shift
  • Centrifugal governors in the prior art usually not operated at an optimum point, so that fuel consumption and / or emissions of
  • centrifugally-controlled CVT transmissions Vehicle are deteriorated. It would therefore be desirable to exploit this potential in centrifugally-controlled CVT transmissions and to obtain a possibility of fuel reduction and emission reduction. Furthermore, centrifugally controlled CVT transmissions also have no optimal design with regard to vehicle dynamics. In particular, with an acceleration of
  • the CVT transmission according to the invention with the features of claim 1, on the other hand, has the advantage that an emission behavior and a
  • Fuel consumption of a vehicle can be significantly improved. Furthermore, also significantly better performance, especially in the
  • the CVT transmission in this case comprises a pair of conical disks with a stationary conical disk and an axially movable conical disk and at least one centrifugal force element, which is arranged movably in the radial direction on the axially movable conical disk. Further, a support wall is provided, which is arranged on the axially movable conical disk. The centrifugal force element is between the support wall and a rear wall of the axially movable
  • an adjusting device for adjusting a position of the axially movable conical disk is further provided.
  • a control unit is configured to operate the actuator to change a position of the axially movable cone pulley.
  • the adjusting device comprises an actuator which drives the support wall to exert centrifugal forces on the centrifugal force element.
  • the support wall comprises a tapered
  • the tapered contact surface of the support wall is preferably conical. As the rotational speed of the support wall increases, the centrifugal force thus acting on the centrifugal force element (s) increases, so that force elements are moved radially outward. Here they run on the rejuvenating
  • an output shaft of the actuator of the adjusting device is arranged parallel to a crankshaft. This allows a particularly compact design can be achieved.
  • the control unit is preferably set up to control the setting device based on parameters of a drive motor. As parameters of the
  • Drive motor are preferably used a speed of the drive motor and / or torque of the drive motor.
  • the parameters for controlling the adjusting device can be detected directly on the drive motor or connected to the drive motor components.
  • the drive motor is preferably an internal combustion engine.
  • control unit is configured to control the setting device based on a choice of a driving mode of a driver.
  • a driving mode e.g. a sports mode or a fuel economy mode or the like.
  • predetermined transmission settings can be stored which, with appropriate selection of a driving mode, e.g. a sports mode or a fuel economy mode or the like., Are taken by the adjusting device.
  • crankshaft passes through the cone pulley pair.
  • the stationary conical disk is connected directly to the crankshaft, so that in the axial direction of the crankshaft only a minimal
  • the adjusting device comprises a gear which is arranged between the actuator and the support wall.
  • the support wall is directly connected to the rotor of the actuator.
  • Supporting wall having a cylindrical extension which is surrounded by a winding of the actuator.
  • a rotor of the actuator is provided by a sleeve portion of the support wall, whereby a particularly compact construction is achieved.
  • a speed sensor is provided to detect a rotational speed of the support wall.
  • the speed sensor is preferred with the
  • control unit connected. More preferably, the control unit and the actuator are arranged in a housing of the CVT transmission. This allows a particularly compact design can be achieved.
  • the present invention relates to a vehicle comprising a CVT transmission according to the invention.
  • the vehicle is preferably a
  • Small vehicle especially a two-wheeler or a tricycle or a snowmobile or quad or a scooter or the like.
  • the actuator is arranged on a housing of the CVT transmission.
  • an output shaft of the actuator protrudes into the housing interior and an intermediate gear for adjusting the support wall is preferably arranged in the housing interior.
  • Figure 1 is a schematic sectional view of a CVT transmission according to a first preferred embodiment of the invention
  • Figure 2 is a schematic sectional view of a CVT transmission according to a second preferred embodiment of the invention.
  • CVT transmission 1 that is, a continuously variable continuously variable transmission according to a first embodiment will be described in detail with reference to FIG.
  • the CVT transmission 1 comprises a
  • Conical disk pair 2 with a fixed conical disk 20 and an axially movable conical disk 21.
  • the fixed conical disk 20 is fixed on a crankshaft 1 1. More precisely, as can be seen from FIG. 1, the stationary conical disk 20 is arranged at the end of the crankshaft 11.
  • the crankshaft 1 as indicated in Figure 1, connected to a drive motor 10, in particular an internal combustion engine.
  • the CVT transmission 1 is a centrifugal force-controlled transmission and comprises a plurality of centrifugal force elements 3, which on the axially movable
  • Cone pulley 21 are arranged.
  • the centrifugal elements are balls.
  • the CVT transmission 1 comprises a support wall 4, which is arranged on the axially movable conical disk. Due to the radial position of the
  • Centrifugal elements 3 an axial position in the axial direction X-X of the axially movable conical disk 21 is determined.
  • an adjusting device 5 is provided, which is connected to a control unit 6.
  • Adjusting device 5 comprises an actuator 50, an output shaft 51 of the actuator and a control gear 52.
  • the actuating gear 52 comprises at least one pinion and is disposed between the actuator 50 and the support disk 4.
  • the support disk 4 comprises a tapered contact surface 40, which is in contact with the centrifugal force elements 3.
  • the support disk 4 further comprises a cylindrical sleeve portion 41, on which a gear of the adjusting gear 52 is arranged.
  • the actuator 50 is preferably an electric motor.
  • the adjusting device 5 comprises a pneumatically operated adjustment drive or a hydraulically operated Versteilantrieb or an electromagnetic Versteilantrieb.
  • a wrapping means 12, e.g. a belt is between the two
  • the belt 12 is provided with a
  • the output element 13 may, for example, also be a directly driven wheel or the like.
  • the actuator 50 is driven and via the actuating gear 52, the support wall 4 is driven. Due to the contact between the support wall 4 and the
  • Centrifugal elements 3 these are accelerated and a centrifugal force acts on the centrifugal force elements 3, so that the centrifugal force elements 3 are pressed radially outward (arrow A).
  • the axially movable conical disk 21 is moved axially in the direction of the stationary conical disk 20, so that the belt is moved radially outwards and a transmission ratio of the
  • a speed of the support wall 4 can be detected by means of a speed sensor 7.
  • the speed sensor 7 is connected to the control unit 6.
  • the actuator 50 is integrated in a housing 14 of the CVT transmission, so that a particularly compact design can be realized.
  • Gear ratio can be realized.
  • the gear ratio may be in terms of consumption optimization or emission optimization or an optimization of an acceleration of the vehicle to be selected. It is also possible to select any desired combination of output variables to be optimized and, correspondingly, to set an optimum gear ratio of the CVT transmission for this purpose.
  • FIG. 2 shows a CVT transmission 1 according to a second embodiment of the invention, wherein the same or functionally identical parts with the same
  • the actuator 50 is integrated into the CVT transmission in the second embodiment.
  • the support wall 4 comprises a sleeve portion 41, which is designed as a rotor of the actuator 50. This allows a particularly compact design can be achieved.
  • the control unit 6 as
  • Printed circuit board 54 is provided, which is arranged on a winding 53 of the actuator 50.
  • An electrical connection is identified by the reference numeral 55.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

L'invention concerne une transmission à variation continue qui comprend une poulie en deux parties (2) comportant un flasque conique fixe (20) et un flasque conique axialement mobile (21), au moins un élément à force centrifuge (3) monté mobile sur le flasque conique axialement mobile (21), une paroi d'appui (4) qui est disposée au niveau du flasque conique axialement mobile (21), l'élément à force centrifuge (3) étant disposé entre la paroi d'appui (4) et une face arrière (22) du flasque conique axialement mobile (21), un dispositif de réglage (5) servant à régler une position du flasque conique axialement mobile (21), et un dispositif de commande (6) qui est conçu pour actionner le dispositif de réglage (5) afin de modifier la position du flasque conique axialement mobile (21).
PCT/EP2016/053922 2015-03-05 2016-02-25 Transmission à variation continue à commande améliorée WO2016139110A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015203915.3 2015-03-05
DE102015203915.3A DE102015203915A1 (de) 2015-03-05 2015-03-05 CVT-Getriebe mit verbesserter Steuerbarkeit

Publications (1)

Publication Number Publication Date
WO2016139110A1 true WO2016139110A1 (fr) 2016-09-09

Family

ID=55411397

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/053922 WO2016139110A1 (fr) 2015-03-05 2016-02-25 Transmission à variation continue à commande améliorée

Country Status (3)

Country Link
DE (1) DE102015203915A1 (fr)
TW (1) TW201638499A (fr)
WO (1) WO2016139110A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004278725A (ja) * 2003-03-18 2004-10-07 Honda Motor Co Ltd 車両用無段変速機
EP1662182A1 (fr) * 2004-11-25 2006-05-31 C.R.F. Società Consortile per Azioni Transmission à variation continue pour vehicules

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2784357B1 (fr) * 2013-03-29 2016-02-17 Musashi Seimitsu Industry Co., Ltd. Transmission variable continue à courroie en V
JP6002614B2 (ja) * 2013-03-29 2016-10-05 武蔵精密工業株式会社 Ｖベルト式無段変速機

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004278725A (ja) * 2003-03-18 2004-10-07 Honda Motor Co Ltd 車両用無段変速機
EP1662182A1 (fr) * 2004-11-25 2006-05-31 C.R.F. Società Consortile per Azioni Transmission à variation continue pour vehicules

Also Published As

Publication number Publication date
TW201638499A (zh) 2016-11-01
DE102015203915A1 (de) 2016-09-08

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