WO2004102042A1 - Vorrichtung zur steuerung eines automatikgetriebes - Google Patents
Vorrichtung zur steuerung eines automatikgetriebes Download PDFInfo
- Publication number
- WO2004102042A1 WO2004102042A1 PCT/EP2004/004860 EP2004004860W WO2004102042A1 WO 2004102042 A1 WO2004102042 A1 WO 2004102042A1 EP 2004004860 W EP2004004860 W EP 2004004860W WO 2004102042 A1 WO2004102042 A1 WO 2004102042A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- pressure
- pressure regulator
- controlled
- switching elements
- 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
- F16H61/02—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 characterised by the signals used
- F16H61/0202—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 characterised by the signals used the signals being electric
- F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0246—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by initiating reverse gearshift
-
- 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
- F16H61/02—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 characterised by the signals used
- F16H61/0262—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 characterised by the signals used the signals being hydraulic
- F16H61/0276—Elements specially adapted for hydraulic control units, e.g. valves
- F16H2061/0288—Relay valve, e.g. valve arranged between shift valve and servo
-
- 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
- F16H61/12—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures
- F16H2061/1204—Detecting malfunction or potential malfunction, e.g. fail safe; Circumventing or fixing failures for malfunction caused by simultaneous engagement of different ratios resulting in transmission lock state or tie-up condition
-
- 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
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/02—Selector apparatus
- F16H59/08—Range selector apparatus
- F16H59/10—Range selector apparatus comprising levers
- F16H59/105—Range selector apparatus comprising levers consisting of electrical switches or sensors
Definitions
- the present invention relates to a hydraulic control device for shifting an automatic transmission, in particular a continuously variable belt transmission, with at least a first and a second shifting element according to the preamble of the main claim.
- Continuously variable belt transmissions for motor vehicles usually consist of a starting unit, a forward and reverse driving unit, a variator, an intermediate shaft, a differential and a control unit.
- a CVT is usually driven by an internal combustion engine via a drive shaft and has a hydraulic starting element.
- the forward and reverse drive unit serves to reverse the direction of rotation for forward and reverse travel and usually consists of a planetary gear.
- the variator consists of two pairs of conical pulleys and a belt means, each pair of conical pulleys having a first conical pulley that is fixed in the axial direction and a second conical pulley that can be moved in the axial direction.
- the belt means circulates between these two pairs of conical pulleys.
- the second pair of conical disks is non-rotatably connected to an output shaft, which transmits the torque to an intermediate shaft via a pair of gearwheels.
- the torque of the intermediate shaft is transferred to the differential via another pair of gears.
- the control or regulation of the CVT is usually carried out via a hydraulic control unit.
- the hydraulic control unit contains electromagnetic actuators and hydraulic valves.
- a pump delivers a pressure medium from a lubricant sump to a hydraulic control unit.
- the electromagnetic actuators are mostly addressed via an electronic transmission control.
- Switching elements are usually used for the actuation of the forward and reverse driving units and can be selected via a gear selection device.
- This gear selector receives signals from a driver of the vehicle, with which the driver z. B. can select the speed levels P, R, N or D.
- the gear selection device usually corresponds to a manually operated selector lever with which the driver passes the signal on to the transmission.
- This selector lever is usually mechanically connected to an actuating device. The valves for filling the switching elements are then mechanically controlled by this actuating device.
- the mechanical control of the selector slide usually consists of a Bowden cable which connects the selector lever to the actuating device in the transmission.
- the adjusting device is moved via the Bowden cable, whereby the selector slide is then mechanically adjusted.
- the selector slide in a separate selector slide housing is often more direct Guided near the actuator.
- a hydraulic connection to the transmission control is then necessary from this selector slide housing. This connection as well as the separate selector slide housing itself are costly.
- the hydraulic connection between the selector slide housing and the transmission control system severely restricts the arrangement of the individual transmission elements.
- the object of the invention is to improve known hydraulic control devices.
- the solution according to the invention is concerned in particular with the advantageous arrangement of pressure regulators and solenoid valves which are used to control the valves for filling the switching elements of the forward and reverse drive unit and are connected to a gear selection device via a non-mechanical connection.
- Valves are controlled by a number of pressure regulators and solenoid valves. These pressure regulators and solenoid valves are addressed via an electronic transmission control.
- the pressure regulators and solenoid valves are supplied with pressure medium by a pressure medium pump.
- the output pressure of the pressure regulators and Manget valves is controlled electronically and then controls a number of valves.
- Switching elements are pressurized with pressure medium via these valves in such a way that they enable different speed levels.
- the hydraulic valves that are responsible for the selection of the switching elements no longer have a mechanical connection to the gear selector. Instead, they are hydraulically controlled via a number of pressure regulators and solenoid valves, which in turn are controlled electronically via the electronic transmission control.
- An advantageous embodiment is a selector lever as a gear selection device, the connection of the selector lever to the transmission control being made possible via a Bowden cable and a so-called selector shaft, which serves as an actuating device.
- the selector shaft is rotated by the Bowden cable and an electronic signal is transmitted to the transmission control according to the position of the selector shaft.
- the valves for selecting the switching elements are then activated accordingly.
- Fig. 6 shows another hydraulic control
- Fig. 7 shows another hydraulic control.
- 1 shows a first embodiment of a hydraulic control system according to the invention.
- a pressure circuit contains the forward / reverse driving unit 4.
- Two switching elements 5, 6 are switched therein by means of two valves 7, 8 arranged one after the other.
- the first valve 7 is supplied directly with a system or main pressure output by the pressure medium pump 9.
- the pressure at the valve 7 required for the selected switching element 5, 6 is then set via a first pressure regulator 10.
- the second valve 8 selects which of the switching elements 5, 6 is acted upon by the pressure set by the first valve 7.
- the switching element 5, 6 not acted upon in each case is vented via the second valve 8.
- the second valve 8 is controlled via a first solenoid valve 11.
- the first pressure regulator 10 and the first solenoid valve 11 are supplied with pressure medium by the pressure medium pump 9 via a pressure reducing valve 12, the pump 9 delivering the pressure medium from the pressure medium sump 31.
- the first pressure regulator 10 and the first solenoid valve 11 are addressed via an electronic transmission control 13.
- the driver passes on a signal via the gear selection device 15 and the mechanical connection 16 to the actuating device 14.
- the signal is forwarded from the control device 1 to the electronic transmission control 13 via the advantageous electronic non-mechanical connection 32.
- the first and second valves 7, 8 are only indirectly connected to the actuating device 14.
- FIG. 2 shows a second embodiment of a hydraulic control according to the invention.
- the second valve 8 is designed in three stages. This enables an additional position in which both switching elements 5, 6 are depressurized and thus vented.
- a two- ter pressure regulator 33 used for the control of the second valve 8. The hydraulic control is secured against single errors by the three-stage second valve 8.
- FIG. 3 shows a further embodiment of a hydraulic control.
- the pressure that is to be applied to the switching elements 5, 6 is still controlled via the first valve 7.
- the second valve 8 from FIG. 1 is here divided into two individual valves 17, 18. With each valve 17, 18 it can be selected independently of one another whether the downstream switching element 5, 6 is pressurized or not. Both valves 17, 18 are acted upon by the outlet pressure of the first valve 7.
- Both valves 17, 18 are also actuated by the first solenoid valve 11, the third valve 17 being acted upon by the control pressure of the first solenoid valve 11 in the 'open' direction and the fourth valve 18 by the control pressure of the first solenoid valve 11 in the 'close' direction ,
- One of the two valves 17, 18 is additionally linked to a further control pressure.
- the control pressure of a third pressure regulator 19 is advantageously used, which also regulates the control pressure for a further consumer, advantageously for a variator. If this further control pressure rises above a limit value to be determined, the fourth valve 18 is closed. This in turn protects the control against single errors.
- FIG. 4 shows a further embodiment of a hydraulic control unit.
- the pressure that is to be applied to the switching elements 5, 6 is still controlled via the first valve 7.
- the second valve 8 from FIG. 3 is divided into two individual valves 17, 18. With the valves 17, 18 it can be selected independently of one another whether the downstream switching element 5, 6 is pressurized or not. Both valves 17, 18 are acted upon by the outlet pressure of the first valve 7.
- the third and fourth valves 17, 18 are over controlled a second and a third pressure regulator 19, 33.
- the first valve is controlled by the first pressure regulator 10, which advantageously regulates a further consumer 3. This consumer 3 advantageously represents a hydraulic starting element.
- FIG. 5 shows an embodiment of the control unit according to the invention with fifth and sixth valves 20, 21 acted directly by the pressure medium pump 9.
- the fifth valve 20 is controlled via the first pressure regulator 10 and the sixth valve 21 via a fourth pressure regulator 22.
- Both valves 20, 21 can therefore regulate different pressures. This enables a so-called overlap circuit, i.e. one of the two switching elements 5, 6 can be filled as long as the other switching element 6, 5 is still vented. As a result, switching can take place more quickly and the transition between the speed steps can also be made softer than if the fifth and sixth valves 20, 21 are filled in succession.
- FIG. 6 corresponds in principle to that shown in FIG. 5, the first pressure regulator 10 being replaced by a less expensive second solenoid valve 23.
- a control pressure of a further consumer 3, preferably of the hydraulic starting element, is used for the fifth valve 20.
- This hydraulic starting element 3 is always fully open when reversing due to the low speeds and speeds prevailing in this driving stage R.
- a control pressure of a fifth pressure regulator 24, which controls the hydraulic starting element 3 is not required when reversing and can therefore control the fifth valve 20.
- a seventh valve 25 is switched by the control pressure of the second solenoid valve 23 in such a way that the control pressure of the fifth pressure regulator 24 controls the fifth valve 20.
- the pressure regulator 24 can implement an overlap circuit according to FIG. 6 at almost the cost of the control according to FIG. 1.
- FIG. 7 also corresponds in principle to that shown in FIG. 5, an eighth valve 26 being used for further protection against malfunctions.
- This eighth valve 26 is a three-stage valve and is controlled by a sixth pressure regulator 27.
- the sixth pressure regulator 27 controls a further consumer 1, which preferably corresponds to a conical disk pair of a variator.
- either the first or the second switching element 5, 6 is acted upon or both switching elements 5, 6 are vented. This in turn protects the hydraulic control device against simple errors, as is also possible with an overlap circuit in this arrangement.
- FIG. 8 shows an embodiment of a hydraulic control unit corresponding to FIG. 5, an additional ninth and tenth valve 28, 29 being used for each switching element 5, 6.
- the second solenoid valve 23 also controls a ninth and tenth valve 28, 29 in addition to the seventh valve 25.
- the tenth valve 29 is also controlled by a seventh pressure regulator 30.
- This seventh pressure regulator 30 also controls a further consumer 1, which advantageously corresponds to a conical disk pair of a variator. This enables an overlap circuit.
- the ninth and tenth valves 28, 29 could also be integrated into the fifth and sixth valves 20, 21, the length of which would of course increase.
- the invention is described in connection with a CVT. However, it can equally be used for other automatic transmissions which have hydraulic clutches for reversing the direction of travel, such as in particular stepped automatic transmissions. reference numeral
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04731589A EP1629222B1 (de) | 2003-05-14 | 2004-05-07 | Vorrichtung zur steuerung eines automatikgetriebes |
US10/556,348 US7338402B2 (en) | 2003-05-14 | 2004-05-07 | Device for controlling an automatic transmission |
DE502004001692T DE502004001692D1 (de) | 2003-05-14 | 2004-05-07 | Vorrichtung zur steuerung eines automatikgetriebes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10321530.1 | 2003-05-14 | ||
DE10321530A DE10321530A1 (de) | 2003-05-14 | 2003-05-14 | Vorrichtung zur Steuerung eines CVT |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004102042A1 true WO2004102042A1 (de) | 2004-11-25 |
Family
ID=33440773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/004860 WO2004102042A1 (de) | 2003-05-14 | 2004-05-07 | Vorrichtung zur steuerung eines automatikgetriebes |
Country Status (4)
Country | Link |
---|---|
US (1) | US7338402B2 (de) |
EP (1) | EP1629222B1 (de) |
DE (2) | DE10321530A1 (de) |
WO (1) | WO2004102042A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049735A1 (de) * | 2006-10-24 | 2008-05-02 | Zf Friedrichshafen Ag | Hydraulische steuerungsvorrichtung eines automatisierten stufenschaltgetriebes |
WO2009112316A1 (de) * | 2008-03-14 | 2009-09-17 | Zf Friedrischhafen Ag | Hydraulische steuerungsanordnung zum steuern eines variablen fluidvolumenstroms |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7544604B2 (en) * | 2006-08-31 | 2009-06-09 | Micron Technology, Inc. | Tantalum lanthanide oxynitride films |
JP5206641B2 (ja) * | 2008-12-25 | 2013-06-12 | アイシン・エィ・ダブリュ株式会社 | 動力伝達装置およびこれを搭載する車両 |
GB2473054A (en) | 2009-08-28 | 2011-03-02 | Gm Global Tech Operations Inc | Synchronizer actuator having a piston that delimits three chambers |
DE102010002747A1 (de) * | 2010-03-11 | 2011-09-15 | Zf Friedrichshafen Ag | Hydraulisches System zur Betätigung eines formschlüssigen Schaltelementes einer Getriebeeinrichtung |
JP6007746B2 (ja) * | 2012-11-20 | 2016-10-12 | アイシン精機株式会社 | 作動油供給装置 |
DE102016215214A1 (de) * | 2016-08-16 | 2018-02-22 | Zf Friedrichshafen Ag | Getriebevorrichtung mit mehreren über hydraulisch betätigbare Kolben-Zylinder-Einrichtungen verstellbare Schaltstangen ein- und auslegbaren Übersetzungen |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3695121A (en) * | 1970-10-05 | 1972-10-03 | Gen Motors Corp | Drive mode selection system for transmissions |
US4519273A (en) * | 1981-10-06 | 1985-05-28 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Automatic transmission for vehicles |
US5437204A (en) * | 1993-12-20 | 1995-08-01 | Ford Motor Company | System for selecting the operating ranges of an automatic transmission |
EP0890046B1 (de) * | 1996-03-30 | 1999-11-17 | ZF FRIEDRICHSHAFEN Aktiengesellschaft | Hydraulische steuervorrichtung zum schalten eines automatikgetriebes, insbesondere eines cvt-getriebes |
US6110071A (en) * | 1999-04-30 | 2000-08-29 | General Motors Corporation | Electronic transmission range selection |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6319165B1 (en) * | 1998-12-01 | 2001-11-20 | Aisin Aw Co., Ltd. | Hydraulic control device for automatic transmission |
JP3799901B2 (ja) | 1999-10-08 | 2006-07-19 | トヨタ自動車株式会社 | 変速機の油圧制御装置 |
JP3519339B2 (ja) * | 2000-03-29 | 2004-04-12 | アイシン・エィ・ダブリュ株式会社 | 自動変速機の油圧制御装置 |
JP3657858B2 (ja) * | 2000-05-31 | 2005-06-08 | アイシン・エィ・ダブリュ株式会社 | 自動変速機の油圧制御装置 |
DE10146962B4 (de) | 2001-09-24 | 2014-08-21 | Zf Friedrichshafen Ag | Hydrauliksystem eines CVT-Getriebes eines Kraftfahrzeuges |
-
2003
- 2003-05-14 DE DE10321530A patent/DE10321530A1/de not_active Withdrawn
-
2004
- 2004-05-07 US US10/556,348 patent/US7338402B2/en not_active Expired - Fee Related
- 2004-05-07 DE DE502004001692T patent/DE502004001692D1/de not_active Expired - Fee Related
- 2004-05-07 EP EP04731589A patent/EP1629222B1/de not_active Expired - Fee Related
- 2004-05-07 WO PCT/EP2004/004860 patent/WO2004102042A1/de active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3695121A (en) * | 1970-10-05 | 1972-10-03 | Gen Motors Corp | Drive mode selection system for transmissions |
US4519273A (en) * | 1981-10-06 | 1985-05-28 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Automatic transmission for vehicles |
US5437204A (en) * | 1993-12-20 | 1995-08-01 | Ford Motor Company | System for selecting the operating ranges of an automatic transmission |
EP0890046B1 (de) * | 1996-03-30 | 1999-11-17 | ZF FRIEDRICHSHAFEN Aktiengesellschaft | Hydraulische steuervorrichtung zum schalten eines automatikgetriebes, insbesondere eines cvt-getriebes |
US6110071A (en) * | 1999-04-30 | 2000-08-29 | General Motors Corporation | Electronic transmission range selection |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008049735A1 (de) * | 2006-10-24 | 2008-05-02 | Zf Friedrichshafen Ag | Hydraulische steuerungsvorrichtung eines automatisierten stufenschaltgetriebes |
US8147380B2 (en) | 2006-10-24 | 2012-04-03 | Zf Friedrichshafen Ag | Hydraulic control apparatus of an automated multi-step change-speed gearbox |
WO2009112316A1 (de) * | 2008-03-14 | 2009-09-17 | Zf Friedrischhafen Ag | Hydraulische steuerungsanordnung zum steuern eines variablen fluidvolumenstroms |
CN101861472B (zh) * | 2008-03-14 | 2013-03-13 | 腓特烈斯港齿轮工厂股份公司 | 用于控制可变的流体体积流量的液压控制装置 |
US8464755B2 (en) | 2008-03-14 | 2013-06-18 | Zf Friedrichshafen Ag | Hydraulic control arrangement for controlling a variable fluid volume flow |
Also Published As
Publication number | Publication date |
---|---|
EP1629222A1 (de) | 2006-03-01 |
US20070105681A1 (en) | 2007-05-10 |
DE10321530A1 (de) | 2004-12-23 |
US7338402B2 (en) | 2008-03-04 |
DE502004001692D1 (de) | 2006-11-16 |
EP1629222B1 (de) | 2006-10-04 |
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