WO2019166046A1 - Schaltanordnung zur verstellung eines ersten scheibensatzes und eines zweiten scheibensatzes eines kegelscheibenumschlingungsgetriebes - Google Patents
Schaltanordnung zur verstellung eines ersten scheibensatzes und eines zweiten scheibensatzes eines kegelscheibenumschlingungsgetriebes Download PDFInfo
- Publication number
- WO2019166046A1 WO2019166046A1 PCT/DE2019/100106 DE2019100106W WO2019166046A1 WO 2019166046 A1 WO2019166046 A1 WO 2019166046A1 DE 2019100106 W DE2019100106 W DE 2019100106W WO 2019166046 A1 WO2019166046 A1 WO 2019166046A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- actuator
- pulley
- switching
- pulley set
- Prior art date
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
- 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
- F16H61/66—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 specially adapted for continuously variable gearings
- F16H61/662—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 specially adapted for continuously variable gearings with endless flexible members
-
- 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
- F16H61/0021—Generation or control of line pressure
- F16H61/0025—Supply of control fluid; Pumps therefore
-
- 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
Definitions
- the present invention relates to a switching arrangement for adjusting a first pulley set and a second pulley set of a conical-pulley transmission.
- Shifting arrangements for operating a conical-pulley transmission are known. These are usually operated with a hydraulic fluid.
- the actuators (eg pumps) used in the switching arrangement must be dimensioned for adjustment and contact pressure of the pulley sets in such a way that power peaks of relevant driving situations can be covered with them.
- Conical pulley belt transmissions typically include a first pulley set and a second pulley set, each pulley set having a fixed and a conical disk displaceable along an axial direction. By shifting the conical disks of the pulley sets, a belt of a small effective radius on the one pulley set can be displaced to a large effective radius on the same pulley set (and vice versa on the other pulley set).
- the pulley set connected to a drive unit of a vehicle is called a primary pulley set. If now an adjustment of the primary disk set is made, wherein the belt is displaced from an overdrive state (OD state, large effective radius) to an underdrive state (UD state, small effective radius), the fluid must be removed from the primary disk set as quickly as possible , It is known to use an electromagnetically actuated valve for this, which supports a fluid discharging actuator.
- the object of the present invention is to provide a switching arrangement which is as simple as possible.
- a switching arrangement is proposed for adjusting a first set of disks (eg secondary disk set) and a second set of disks (eg primary disk set) of a belt pulley belt transmission.
- the switching arrangement has at least one first actuator (for example a pump with changing conveying direction) for actuating the first set of disks and a second actuator (for example a pump with changing conveying direction) for actuating the second set of disks and a valve, which switchably connects the second actuator to a reservoir for the fluid used to operate the switching assembly.
- the valve is a passive switching valve with at least a first switching position and a second
- valve is switchable via a pressure difference between the fluid present between a first line section and a second line section.
- the pressure difference (during operation of the switching arrangement) via a pressure reducer (a cross-sectional constriction, a flow resistance) can be generated.
- the pressure reducer is an aperture.
- a diaphragm comprises a reduction of a flow cross-section of a line through which the fluid flows.
- upstream of the diaphragm is usually a higher pressure than downstream of the diaphragm. This pressure difference caused by the diaphragm is used in the present case to control the valve.
- valve is biased by a spring.
- the valve is displaceable by the spring in the first switching position, wherein in the first switching position, the second actuator is fluid-technically separated by the valve from the reservoir. In the second switching position, the second actuator is fluidly connected to the reservoir via the valve.
- the valve is in particular a 2/2-way valve, thus has two connections and at least two switching positions (possibly further switching positions between the first and the second switching position).
- the valve can be displaced by the pressure difference from the first switching position and against the action of the spring in the second switching position. If the pressure difference falls below a predetermined differential pressure, the valve is displaced by the spring back into the first switching position.
- first actuator between the reservoir and the first pulley set and the second actuator between the first pulley set and the second pulley set is arranged.
- the valve is connected between a first line section and an nem second line section present and generated by a pressure reducer pressure difference of the fluid switchable.
- the pressure reducer is
- a non-return valve is arranged parallel to the pressure reducer in a fluidic third connection, which blocks a flow of the fluid from the second set of discs to the first set of discs.
- the switching arrangement has a pump, via which the valve and the first actuator are fluidly connected to the reservoir.
- the conical-pulley transmission can be actuated via the above-described switching arrangement according to one of the preceding claims.
- the second pulley set is the primary pulley set.
- An adjustment of the primary disk set from an overdrive state to an underdrive state is carried out by the discharge of a fluid from the primary pulley set, wherein at least a portion of the discharged fluid is passed via the passively switching valve to the reservoir.
- the second actuator which promotes the fluid from the second set of discs to the first set of discs in this adjustment, be relieved.
- the required in the second disc set rapid pressure reduction can thus be supported.
- Fig. 1 a switching arrangement with an electrically controlled valve
- FIG. 2 shows a first embodiment of a switching arrangement with a passively switching valve
- FIG. 3 shows a second variant of a switching arrangement with a passively switching valve
- the switching arrangement 1 shows a switching arrangement 1 with a regulated valve 7.
- the switching arrangement 1 has a first actuator 5 (a pump with changing conveying direction) for actuating the first pulley set 2 and a second actuator 6 (a pump with changing conveying direction) for actuation of the second pulley set 3 and a valve 7, which connects the second actuator 6 to a reservoir 8 for the fluid used for operating the switching arrangement 1 switchable.
- the conical-pulley 4 comprises a first pulley set 2 and a second pulley set 3, each pulley set 2, 3 having a fixed pulley and a pulley 2 Having along an axial direction movable conical disk.
- the (second) disk set 3 connected to a drive unit 22 of a vehicle 21 is referred to as a primary disk set. If now an adjustment of the primary disk set is made, wherein the belt 24 is displaced from an underdrive state (UD state, small effective radius) to an overdrive state (OD state, large effective radius), the fluid must be displaced from the Primary disc set to be removed as quickly as possible. It is known to use an electromagnetically actuated valve 7 for this purpose, which supports a second actuator 6 discharging the fluid.
- UD state underdrive state
- OD state large effective radius
- FIG. 2 shows a first embodiment variant of a switching arrangement 1 with a passively switching valve 7. Reference is made to the statements relating to FIG. 1.
- the switching arrangement 1 is used for adjusting a first pulley set 2 (secondary disk set) and a second pulley set 3 (primary disk set) of a belt pulley belt transmission 4.
- the switching arrangement 1 has a first actuator 5 (a pump with alternating conveying direction) for actuating the first pulley set 2 and a second actuator 6 (a pump with changing conveying direction) for actuating the second pulley set 3 and a valve 7, which controls the second Actuator 6 with a reservoir 8 for the fluid used to operate the Weganord- 1 connects switchable.
- the valve 7 is a passive switching valve with at least a first switching position 9 and a second switching position 10 and possibly other switching positions.
- the valve 7 is switchable via a present between a first line section 11 and a second line section 12 pressure difference 13 of the fluid.
- the first line section 11 connects the second actuator 6 with the second set of disks 3.
- the second line section 12 connects the second actuator 6 with the first Actuator 5.
- the pressure difference 13 is (during operation of the switching arrangement 1) via a pressure reducer 14, here a diaphragm, generated.
- the valve 7 is biased by a spring 15.
- the valve 7 is displaceable by the spring 15 into the first switching position 9, wherein in the first switching position 9 the second actuator 6 is fluidly separated from the reservoir 8 by the valve 7 (shown here). In the second switching position 10, the second actuator 6 is fluidly connected via the valve 7 to the reservoir 8.
- the valve 7 is a 2/2-way valve, thus has two connections and two switch positions 9, 10 (and possibly other switching positions) on.
- the valve 7 can be displaced by the pressure difference 13 from the first switching position 9 and against the action of the spring 15 in the second switching position 10. If the pressure difference 13 falls below a predetermined differential pressure, the valve 7 is displaced by the spring 15 back into the first switching position 9.
- the first actuator 5 is fluidly arranged between the reservoir 8 and the first pulley set 2 and the second actuator 6 between the first pulley set 2 and the second pulley set 3.
- the pressure reducer 14 is arranged in a fluid-technical first connection 16 between the second actuator 6 and the second set of disks 3.
- a check valve 19 is arranged that blocks a flow of fluid from the second set of discs 3 to the first set of discs 2.
- the switching arrangement 1 has a pump 20, via which the valve 7 and the first actuator 5 are fluidly connected to the reservoir 8.
- FIG. 3 shows a second embodiment variant of a switching arrangement 1 with a passively switching valve 7.
- the pressure reducer 14 (the diaphragm) is arranged in a fluid-technical second connection 17 between the first actuator 5 and the second actuator 6.
- the 4 shows a vehicle 21 with a belt pulley 4.
- the vehicle 21 comprises a drive unit 22, which can be connected to the belt pulley 4 via a clutch 23.
- the conical disk wrap transmission 4 comprises a primary disk set (second disk set 3) and a secondary disk set (first disk set 2), which are connected to one another via a belt 24.
- the primary disk set is used to introduce a torque of the drive unit 22 into the belt pulley 4.
- the torque is transmitted to the wheels 25 of the vehicle 21 via the secondary disk set, starting from the belt pulley 4.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
- Transmissions By Endless Flexible Members (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112019001035.2T DE112019001035A5 (de) | 2018-02-28 | 2019-02-01 | Schaltanordnung zur Verstellung eines ersten Scheibensatzes und eines zweiten Scheibensatzes eines Kegelscheibenumschlingungsgetriebes |
JP2020517820A JP6938780B2 (ja) | 2018-02-28 | 2019-02-01 | 円錐形ディスク式巻掛け変速機の第1のディスクセットおよび第2のディスクセットを調節するための切換装置 |
CN201980007303.7A CN111566391B (zh) | 2018-02-28 | 2019-02-01 | 用于调整锥盘缠绕式传动装置的第一盘组和第二盘组的切换组件 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018104558.1 | 2018-02-28 | ||
DE102018104558.1A DE102018104558A1 (de) | 2018-02-28 | 2018-02-28 | Schaltanordnung zur Verstellung eines ersten Scheibensatzes und eines zweiten Scheibensatzes eines Kegelscheibenumschlingungsgetriebes |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019166046A1 true WO2019166046A1 (de) | 2019-09-06 |
Family
ID=65516399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2019/100106 WO2019166046A1 (de) | 2018-02-28 | 2019-02-01 | Schaltanordnung zur verstellung eines ersten scheibensatzes und eines zweiten scheibensatzes eines kegelscheibenumschlingungsgetriebes |
Country Status (4)
Country | Link |
---|---|
JP (1) | JP6938780B2 (de) |
CN (1) | CN111566391B (de) |
DE (2) | DE102018104558A1 (de) |
WO (1) | WO2019166046A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104160180A (zh) * | 2011-12-29 | 2014-11-19 | 罗伯特·博世有限公司 | 用于具有发动机的车辆传动系的液压致动无级变速器 |
WO2015067259A1 (de) * | 2013-11-08 | 2015-05-14 | Schaeffler Technologies AG & Co. KG | Fluidanordnung |
DE102016217381A1 (de) * | 2015-09-29 | 2017-03-30 | Schaeffler Technologies AG & Co. KG | Fluidanordnung zum fluidischen Betätigen von Kraftfahrzeugkomponenten |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3310786A1 (de) * | 1983-03-24 | 1984-09-27 | Mannesmann Rexroth GmbH, 8770 Lohr | Stufenlos verstellbares kegelscheibenumschlingungsgetriebe |
WO2012051985A2 (de) * | 2010-10-18 | 2012-04-26 | Schaeffler Technologies AG & Co. KG | Cvt-getriebe |
NL1039977C2 (en) * | 2012-12-27 | 2014-06-30 | Bosch Gmbh Robert | HYDRAULICALLY ACTUATED CONTINUOUSLY VARIABLE TRANSMISSION. |
CN107949728B (zh) * | 2015-08-24 | 2020-01-14 | 日本电产东测有限公司 | 车载液压供给装置 |
JP2017207191A (ja) * | 2016-05-20 | 2017-11-24 | 本田技研工業株式会社 | 油圧機器用油圧回路 |
-
2018
- 2018-02-28 DE DE102018104558.1A patent/DE102018104558A1/de not_active Withdrawn
-
2019
- 2019-02-01 DE DE112019001035.2T patent/DE112019001035A5/de not_active Withdrawn
- 2019-02-01 JP JP2020517820A patent/JP6938780B2/ja active Active
- 2019-02-01 CN CN201980007303.7A patent/CN111566391B/zh active Active
- 2019-02-01 WO PCT/DE2019/100106 patent/WO2019166046A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104160180A (zh) * | 2011-12-29 | 2014-11-19 | 罗伯特·博世有限公司 | 用于具有发动机的车辆传动系的液压致动无级变速器 |
WO2015067259A1 (de) * | 2013-11-08 | 2015-05-14 | Schaeffler Technologies AG & Co. KG | Fluidanordnung |
DE102016217381A1 (de) * | 2015-09-29 | 2017-03-30 | Schaeffler Technologies AG & Co. KG | Fluidanordnung zum fluidischen Betätigen von Kraftfahrzeugkomponenten |
Also Published As
Publication number | Publication date |
---|---|
JP2020535365A (ja) | 2020-12-03 |
CN111566391A (zh) | 2020-08-21 |
DE102018104558A1 (de) | 2019-08-29 |
CN111566391B (zh) | 2022-05-13 |
DE112019001035A5 (de) | 2020-12-17 |
JP6938780B2 (ja) | 2021-09-22 |
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