EP3329147A1 - Transmission à variation continue à réglage pneumatique - Google Patents

Transmission à variation continue à réglage pneumatique

Info

Publication number
EP3329147A1
EP3329147A1 EP16729529.4A EP16729529A EP3329147A1 EP 3329147 A1 EP3329147 A1 EP 3329147A1 EP 16729529 A EP16729529 A EP 16729529A EP 3329147 A1 EP3329147 A1 EP 3329147A1
Authority
EP
European Patent Office
Prior art keywords
axially movable
conical disk
pneumatic
cvt transmission
movable conical
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.)
Withdrawn
Application number
EP16729529.4A
Other languages
German (de)
English (en)
Inventor
Oliver Gerundt
Ianislav Krastev
Daniel Schwartz
Ingo Drewe
Rudolf Eydam
Ralf Diekmann
Carolin Breitinger
Mykhaylo Klymenko
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.)
Robert Bosch GmbH
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 EP3329147A1 publication Critical patent/EP3329147A1/fr
Withdrawn legal-status Critical Current

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
    • 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
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/26—Generation or transmission of movements for final actuating mechanisms
    • F16H61/28—Generation or transmission of movements for final actuating mechanisms with at least one movement of the final actuating mechanism being caused by a non-mechanical force, e.g. power-assisted
    • F16H61/30—Hydraulic or pneumatic motors or related fluid control means therefor
    • 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
    • F16H63/065—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 hydraulic 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
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F16H9/18—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts only one flange of each pulley being adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/40—Actuators for moving a controlled member
    • B60Y2400/408—Pneumatic actuators

Definitions

  • the present invention relates to a pneumatically adjustable CVT transmission (continuously variable transmission), in particular for small vehicles such as
  • Bikes tricycles, quads or snowmobiles, as well as an internal combustion engine and a vehicle.
  • Centrifugal governor for adjusting a position of a belt on a belt
  • Centrifugal weights of the centrifugal governor thereby their radial position, whereby an axial distance between two conical disks is changed and thereby a ratio of the transmission is changed.
  • an adjusting device for adjusting a position of an axially movable conical disk is provided for this purpose.
  • the adjusting device is a pneumatic adjusting device, which adjusts the axially movable conical disk by means of pneumatic force.
  • the adjusting device comprises a pneumatic space, which is arranged on a rear side of the axially movable conical disk.
  • the back of the axially movable conical disk is the side which is not in contact with the belt of the CVT transmission.
  • Axial movement of the conical disk causes.
  • the axially movable conical disk itself acts as a kind of piston for an adjustment of the translation.
  • a number of components can be kept low.
  • the pneumatic space is defined by the back of the axially movable conical disk and a cylinder element with bottom. This allows a simple and inexpensive construction can be realized.
  • the cylinder element is preferably so with the axially movable
  • the axially movable conical disk is axially movable on a sleeve.
  • the sleeve is provided with a rotating shaft, in particular one
  • the pneumatic actuator comprises a
  • the pneumatic accumulator can with overpressure or with To work under pressure. That is, in the pneumatic accumulator there is an overpressure, which is used to adjust the CVT transmission, or alternatively, a negative pressure, which is used to adjust the CVT transmission.
  • the pneumatic adjusting device is adapted to adjust the axially movable conical disk by means of negative pressure. When using a pneumatic accumulator, a negative pressure is thus preferably maintained in the pneumatic accumulator.
  • the pneumatic accumulator is connected via a connecting line with a vacuum source.
  • a check valve is preferably arranged in the connecting line to allow a shut-off of the connecting line. The check valve is preferably automatically closing and can be adjusted to the respective desired conditions.
  • a pneumatic line for supplying the pneumatic space with positive pressure and / or negative pressure through the cone pulley pair is disposed therethrough.
  • the pneumatic line runs through the crankshaft.
  • the CVT transmission to centrifugal weights, which shift depending on a speed of the conical disks, so that by means of the pneumatic actuator according to the invention only one
  • the present invention relates to an internal combustion engine comprising a CVT transmission according to the invention.
  • the internal combustion engine comprises
  • Gear is connected to provide the pneumatic force for adjusting the CVT transmission.
  • the suction tube is doing with the
  • the present invention relates to a vehicle comprising a CVT transmission according to the invention and / or an inventive
  • the vehicle preferably has a vehicle frame, in particular a pipe or pipe assembly, which is designed as a pneumatic accumulator.
  • a hollow frame is provided in which an overpressure or a
  • Vacuum can be used as a pneumatic accumulator for providing the pneumatic force for adjusting the CVT transmission. This is particularly advantageous when using two-wheeled or three-wheeled vehicles
  • the vehicle according to the invention is preferably a small vehicle, in particular a two-wheeler or a tricycle or a quad or a snowmobile or a scooter or the like.
  • Figure 1 is a schematic representation of a CVT transmission for a
  • Figure 2 is a schematic sectional view of the CVT transmission of
  • FIG. 1 A first figure.
  • Figure 3 is a schematic representation of a control valve of the first
  • Embodiment, and Figure 4 is a schematic representation of a control valve according to a second embodiment of the invention.
  • CVT transmission 1 i. a continuously variable, continuously variable transmission, according to a preferred embodiment of the invention described in detail.
  • the CVT transmission 1 comprises a first one
  • Conical disk pair 2 with a fixed conical disk 20 and an axially movable conical disk 21.
  • output element 13 is a second
  • Cone pulley pair provided.
  • the two conical disk pairs are connected in a known manner via a belt 12, in particular a belt.
  • the first conical disk pair 2 is on a crankshaft 1 1 a
  • crankshaft 1 1 is connected to the stationary conical disk 20.
  • the CVT transmission 1 further comprises centrifugal force elements 3, which are arranged on the axially movable conical disk 21.
  • the centrifugal elements are 3 balls.
  • solid cylinders or hollow cylinders or the like can be used.
  • the centrifugal force elements 3 are arranged on a rear side 22 of the axially movable conical disk 21.
  • the adjusting device 5 comprises a pneumatic space 50, which is arranged on the rear side 22 of the axially movable conical disk.
  • the pneumatic space 50 is further bounded by a cylinder element 51 with bottom 52 (see FIG.
  • a gasket 53 e.g. an O-ring or the like, is provided between the axially movable cone pulley 21 and the cylinder member 51.
  • a control valve 8 is arranged in detail in FIG. The control valve 8 is controlled by a control unit 6 in response to a desired
  • control valve 8 is a 3/3-way valve, wherein the control valve 8 can connect on the one hand to the vacuum reservoir 7 and on the other hand with an environment 19 (ambient pressure).
  • a third position is the closed position of the control valve 8, which is shown in FIG.
  • Cylinder member 51 which is arranged rotatably, but not arranged in the axial direction X-X movable.
  • the distance between the axially movable conical disk 21 and the fixed conical disk 20 becomes larger, so that the belt moves further in the direction of the crankshaft 1 1.
  • Opening the control valve 8 for establishing a connection with the environment 19 can be realized.
  • the second line 17 is arranged such that the second line 17 opens from the rear side of the axially movable conical disk 21 into the pneumatic space 15.
  • a line through the crankshaft 1 1 is passed
  • crankshaft 1 1 is mounted by means of a bearing 57 on a housing 14.
  • a vacuum present in a suction pipe 9 of an internal combustion engine 10 is used as pneumatic energy for adjusting a ratio of the CVT transmission.
  • a pressure level in the intake manifold 9 is dependent on a throttle position and a speed of the internal combustion engine.
  • a vacuum supply of the vacuum accumulator 7 can thus be ensured constantly.
  • a simple and secure adjustment of the axially movable conical disk 21 is achieved by means of pneumatic force.
  • Reset can be done by means of ambient pressure.
  • the vacuum accumulator 7 is particularly preferably arranged in a cavity of a vehicle. This is then no further space for the
  • the actuator 5 is disposed on a primary side of the CVT, that is, on an input side.
  • the adjusting device it is also possible for the adjusting device to be arranged on a secondary side of the CVT transmission, that is, on the output element 13. Further alternatively, an actuating device is arranged on the primary side and the secondary side.
  • FIG. 4 shows an alternative embodiment of the control valve 8, which comprises two 2/2-way valves 80, 81 in this embodiment.
  • One of the two 2/2-way valves is between the vacuum reservoir 7 and the
  • Pneumatic space 50 arranged and the other of the two 2/2-way valves is disposed between the pneumatic chamber 50 and the environment 19.
  • the present invention is particularly applicable to small vehicles, e.g. Used on two-wheelers or tricycles or quads or snowmobiles or the like.

Landscapes

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

Abstract

La présente invention concerne une transmission à variation continue, comprenant une poulie à flasques coniques (2) qui comporte au moins un flasque conique mobile axialement (21); un dispositif de réglage (5) pour régler la position du flasque conique mobile axialement (21), et une unité de commande (6) conçue pour commander le dispositif de réglage (5) afin de modifier la position du flasque conique mobile axialement (21), le dispositif de réglage (5) étant un dispositif de réglage pneumatique qui règle le flasque conique mobile axialement (21) au moyen d'une force pneumatique.
EP16729529.4A 2015-07-27 2016-06-08 Transmission à variation continue à réglage pneumatique Withdrawn EP3329147A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015214153.5A DE102015214153A1 (de) 2015-07-27 2015-07-27 Pneumatisch verstellbares CVT-Getriebe
PCT/EP2016/063033 WO2017016732A1 (fr) 2015-07-27 2016-06-08 Transmission à variation continue à réglage pneumatique

Publications (1)

Publication Number Publication Date
EP3329147A1 true EP3329147A1 (fr) 2018-06-06

Family

ID=56132911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16729529.4A Withdrawn EP3329147A1 (fr) 2015-07-27 2016-06-08 Transmission à variation continue à réglage pneumatique

Country Status (5)

Country Link
EP (1) EP3329147A1 (fr)
CN (1) CN107850194A (fr)
DE (1) DE102015214153A1 (fr)
TW (1) TW201710615A (fr)
WO (1) WO2017016732A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017205514A1 (de) 2017-03-31 2018-10-04 Robert Bosch Gmbh Pneumatisch verstellbares CVT-Getriebe
CN107061661A (zh) * 2017-06-06 2017-08-18 吕振雄 变速箱
DE102017217526A1 (de) 2017-10-02 2019-04-04 Robert Bosch Gmbh Pneumatisch verstellbares CVT-Getriebe

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3000544A1 (de) * 1980-01-09 1981-07-16 Robert Bosch Gmbh, 7000 Stuttgart Steuervorrichtung fuer ein stufenloses getriebe
US20010049312A1 (en) * 1999-12-27 2001-12-06 Warner Steven E. Variable speed drive system
JP4140034B2 (ja) * 2004-03-05 2008-08-27 トヨタ自動車株式会社 車両用ベルト式無段変速機
JP5907976B2 (ja) * 2010-10-18 2016-04-26 シェフラー テクノロジーズ アー・ゲー ウント コー． カー・ゲーＳｃｈａｅｆｆｌｅｒ Ｔｅｃｈｎｏｌｏｇｉｅｓ ＡＧ ＆ Ｃｏ． ＫＧ Ｃｖｔ型トランスミッション
WO2014052725A2 (fr) * 2012-09-28 2014-04-03 Brp-Powertrain Gmbh & Co. Kg Transmission à variation continue à assistance pneumatique

Also Published As

Publication number Publication date
CN107850194A (zh) 2018-03-27
DE102015214153A1 (de) 2017-02-02
WO2017016732A1 (fr) 2017-02-02
TW201710615A (zh) 2017-03-16

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