WO2009076926A1 - Hydraulikversorgungssystem für ein hydraulisch betätigtes, automatisches getriebe - Google Patents
Hydraulikversorgungssystem für ein hydraulisch betätigtes, automatisches getriebe Download PDFInfo
- Publication number
- WO2009076926A1 WO2009076926A1 PCT/DE2008/001977 DE2008001977W WO2009076926A1 WO 2009076926 A1 WO2009076926 A1 WO 2009076926A1 DE 2008001977 W DE2008001977 W DE 2008001977W WO 2009076926 A1 WO2009076926 A1 WO 2009076926A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- line
- control
- hydraulic
- pump
- control line
- 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.)
- Ceased
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
- F16H61/66272—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 characterised by means for controlling the torque transmitting capability of the gearing
-
- 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 therefor
- F16H61/0031—Supply of control fluid; Pumps therefor using auxiliary pumps, e.g. pump driven by a different power source than the engine
-
- 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
- F16H2061/66286—Control for optimising pump efficiency
-
- 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
- F16H2312/00—Driving activities
- F16H2312/14—Going to, or coming from standby operation, e.g. for engine start-stop operation at traffic lights
-
- 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 therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/85978—With pump
- Y10T137/85986—Pumped fluid control
Definitions
- the invention relates to a hydraulic supply system for a hydraulically actuated automatic transmission.
- FIG. 2 shows a longitudinal section through a conical disk pair assembly of a prior art bevel gear transmission.
- the conical disk pair assembly includes a shaft 10 to which a fixed disk 12 is rigidly connected. On the shaft 10 via a spline 14 axially displaceable, but rotatably connected to the shaft 10, a spacer plate 16 is arranged. Cone surfaces of the discs 12 and 16, between which an unillustrated belt encircling means, which connects the cone pulley pair shown with another, not shown cone pulley pair of conical pulley belt, face each other.
- a cylindrical ring 18 with two radially spaced walls and U-shaped cross-section is rigidly fixed to its on the radially inner side of a trained with a guide surface guide ring member 20 is rigidly attached to its side facing away from the conical surface.
- a support ring component 22 is rigidly connected to the shaft 10 and has a first axial projection 24 formed on its free end face with first ramp surfaces 26 distributed along the circumference.
- the support ring member 22 Radially outwardly of the first annular projection 24, the support ring member 22 is formed with a second annular axial projection 28 which projects between the walls of the cylinder ring 18 and seals against them so that between the second projection 28 and the cylinder ring 18 is an adjustment chamber 30 is formed, which can be acted upon by radial bores 32 of the travel disc 16 and the shaft 10 and an axial feed channel 34 leading through the shaft 10 with hydraulic fluid.
- a generally annular sensing piston 36 is axially movably guided on the shaft 10, which is cup-shaped extended to the travel disc 16 and ends in a ring 38, spaced at the side facing away from the return plate 16 in the circumferential direction second Ramp surfaces 40 are formed.
- rolling elements 42 which protrude through recesses formed in the sensing piston and whose axial position is determined primarily by the ramp surfaces 26, 40 and whose radial position predominantly by trained on the guide ring member 20, matched to the ramp surfaces Guide surfaces 43 and a radially outer surface of an axial extension of the washer 16 is determined.
- a torque sensing chamber 44 is formed, which is connected via formed in the shaft 10 radial inlet holes 46 with a leading through the shaft inlet channel 48. From the sensing chamber 44 go from radial drain holes 50, which open into a guided through the shaft drain passage 52.
- the sensing piston 36 has on its side facing away from the shim 16 side evenly spaced, axially projecting arms 54 which project through openings formed in the support ring member 22 and formed with an external toothing 56 which engages in an internal toothing 58 of a drive wheel 60, the is mounted on the shaft 10 and via which the drive of the transmission takes place.
- the sensing piston 36 is thus rigidly connected in the circumferential direction and axially movable relative to the drive wheel 60.
- the hydraulic pressure supply of the adjustment chamber 30 and the torque sensing chamber 44 is carried out when using the transmission in a motor vehicle normally by means of a hydraulic pump which is driven by a serving for driving the vehicle internal combustion engine.
- Modern motor vehicles are equipped with stop-start systems for reasons of saving fuel and improving environmental compatibility in which the internal combustion engine is automatically put out of operation in operating phases in which it is not needed for the propulsion of the vehicle, for example in overrun, at a stop in front of a traffic light or in stop and go traffic.
- the invention has for its object to provide a remedy for the aforementioned problems.
- An inventive hydraulic supply system for a hydraulically actuated automatic transmission, in particular for a conical pulley, with two pairs of conical pulleys connected by a belt means comprises a pump for providing hydraulic pressure in a supply line which is connected via a Utilizsstellventil with at least one adjustment chamber and at least one connecting line , is connected to the at least one flowed through by hydraulic fluid sensing chamber, wherein the flow through the sensing chamber available fürströmquerites depends on the torque transmitted from the transmission, and is connected via a pilot valve to a control line in which a control valve is arranged with the the pressure in the control line which determines the position of the transmission control valve is adjustable, an auxiliary means separated by a drive of the pump drive-driven auxiliary pump whose output line is connected to the control line and via a branch line branching off from the output line to the supply line, wherein in the output line upstream of the junction of the branch line opening in the direction of the control line first check valve and in the branch line to Supply line opening second check valve is arranged
- the hydraulic system of the present invention is suitable for use in substantially all types of hydraulically actuated automatic transmissions, and can be used more generally for hydraulically actuated devices.
- the pilot valve is designed such that the pressure in the control line does not rise above a predetermined value.
- the pilot valve for example, a return, which is connected to the predetermined pressure in the control line with this.
- the supply line is connected to the connection line via a connection valve having a control chamber connected to the supply line and opening the connection between the supply line and the connection line above a predetermined pressure in the control chamber.
- the pump provided for the normal supply of the hydraulic supply system is advantageously driven by an internal combustion engine for driving a motor vehicle; the auxiliary pump is advantageously driven by an electric motor, which is set at a stationary internal combustion engine in operation.
- FIG. 1 is a block diagram of parts of a hydraulic supply according to the invention system for a belt pulley
- a hydraulic system for supplying a conical-disk drive transmission includes a pump 62 driven by an internal combustion engine, not shown, which draws hydraulic fluid from a reservoir 64 through a filter 66 and builds up system pressure in a supply line 68.
- the supply line 68 leads through a connecting valve 70 through to connecting lines 72, to each of which one of the inlet channels 48 (FIG. 2) of each conical-disk pair assembly 49 is connected, via which a torque-dependent contact pressure of the belt takes place.
- a return line connected to the drainage channel 52 is designated 74.
- the supply line 68 passes through a translation control valve 76 to conduits 78, one of which is connected to an axial channel 34 of each conical disc assembly 49 through which the adjustment chamber 30 ( Figure 2) is pressurized.
- a control line 80 which is connected to the supply line 68 via a pilot valve 82 and in which an electrically controlled, designed as a proportional valve control valve 84 is arranged, which connects the control line 80 with a return 86 in its fully open state ,
- the position of the pilot valve 82 is substantially herr herr by the in its pilot chamber 88. see, existing in the control line 80 pressure determined.
- the supply line 88 further leads to a coupling valve 90, are supplied via the clutches in the conical-Scheibenschlschlungsungsgetriebe clutches for forward and reverse and a selector lever valve with hydraulic pressure.
- a coupling valve 90 is supplied via the clutches in the conical-Scheibenschlschlungsungsgetriebe clutches for forward and reverse and a selector lever valve with hydraulic pressure.
- an electrically controlled clutch control valve is designated.
- the hydraulic supply system described so far is known in its construction and in its function per se and will therefore not be described in detail.
- the electrical control valves 84 and 92 and further control valves are controlled by an electronic control device, not shown, according to predetermined programs, wherein the inputs of the electronic control device are the values of operating parameters of the drive train essential for the operation of the cone pulley, for example the position of an accelerator pedal, vehicle speed, Speed of Internal combustion engine, etc.
- the inputs of the electronic control device are the values of operating parameters of the drive train essential for the operation of the cone pulley, for example the position of an accelerator pedal, vehicle speed, Speed of Internal combustion engine, etc.
- pressure sensors 94 At various points of the hydraulic system prevailing pressures are detected by means of pressure sensors 94, not all of which are designated by reference numerals, and used for monitoring the operation and the control.
- an auxiliary pump 96 driven by an electric motor 94 which sucks hydraulic fluid through a filter 98 from a reservoir 100 and delivers it to an outlet line 102.
- the reservoir 100 may be identical to the reservoir 64 and the filter 98 may be identical to the filter 96.
- the output line 102 opens into the control line 80 and includes a first check valve 104 opening to the control line 80. From the output line 102 branches off between the first check valve 104 and the control line 80 from a branch line 106 which opens into the supply line 69 and a second check valve 108th containing that opens towards the supply line.
- the pilot valve 82 has a return 110 and is designed such that when the pilot chamber 88 is unpressurized, the supply line 68 is connected to the control line 80, at a predetermined pressure in the pilot chamber 88, the supply line 68 is disconnected from the control line 80 and at further increasing pressure In the pilot chamber 88 and the control line 80, the control line is increasingly connected to the return line 110, so that hydraulic fluid flows out of the return line 110.
- the connection valve 70 includes a control chamber 112 connected to the supply line 68. When a predetermined pressure in the control chamber 112 is exceeded, a valve member of the connection valve 70 is moved so that a connection between the supply line 68 and the connection lines 72 is established.
- a line 114 leads to the control line 180.
- a third check valve 116 is disposed in front of the mouth in the control line 80, which opens in the direction of the connecting lines 72.
- the line 114 in the flow direction before its connection to the connecting valve 70 at least one aperture 118 (in the example shown, two successively arranged aperture).
- the pump 62 works and builds pressure in the supply line 68 as well as on the initially open at startup of the pump 62 pilot valve 82 in the control line 80, wherein the pressure in the control line 80 is limited to a value which is determined thereby in that the pilot control valve 82 disconnects the connection between the supply line 68 and the control line 80 at the predetermined pressure in the pilot chamber 88.
- the check valves 104 and 106 prevent leakage of hydraulic fluid through the exit conduit 102 and the auxiliary pump 96.
- the connecting valve 70 opens the connection from the supply line 68 to the connecting lines 72 as soon as a predetermined pressure is exceeded in its control chamber 112, which is preferably slightly above the pressure in the control line 80.
- the hydraulic fluid flowing through the connecting lines 72 into the sensing chambers and through them can not flow back into the control line 80 as a result of the third non-return valve 116.
- the pressure medium supply of the system breaks down and the supply line 68 and the control line 80 are depressurized due to leakage losses and the like, so that the system at startup of the internal combustion engine the pump 62 is not immediately functional, but a certain period is required for pressure build-up. During this period, the vehicle is inoperable and the transmission may be damaged due to the lack of contact pressure between the conical disks and the belt.
- the electric motor 94 starts and activates the auxiliary pump 96.
- the first check valve 104 and the second check valve 108 open at low pressure to the outlet line 102, so that in the control line 80 and the supply line 68 pressure is built up.
- the third check valve 116 opens, so that the torque sensing chamber 44 (FIG. 2) is supplied through the lines with hydraulic fluid delivered by the auxiliary pump 69. If this hydraulic fluid can not drain through the drain hole 50 (FIG.
- the auxiliary pump 96 may be used in addition to the pump 62 for their support when the pressure in the supply line 68 drops in critical driving situations, for example, flows through a torque sensing chamber, a hydraulic fluid amount that is not sufficiently nachge felicitt by the pump 62.
- the start-up of the auxiliary pump 96 then leads to a rapid increase in the pressure in the control line 80, so that the pilot valve 82, the control line 80 separates from the supply line 68.
- the pump 62 no longer conveys into the control line 80, so that the full delivery volume for the supply line 68 is available.
- auxiliary pump 96 to assist the pump 62 allows for a smaller design of the pump 62, which favorably affects the overall efficiency of the system.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010538322A JP5332005B2 (ja) | 2007-12-18 | 2008-11-27 | ハイドロリック式に作動されるオートマチック式伝動装置のためのハイドロリック供給システム |
| DE200811003208 DE112008003208A5 (de) | 2007-12-18 | 2008-11-27 | Hydraulikversorgungssystem für ein hydraulisch betätigtes, automatisches Getriebe |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US802207P | 2007-12-18 | 2007-12-18 | |
| US61/008,022 | 2007-12-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2009076926A1 true WO2009076926A1 (de) | 2009-06-25 |
Family
ID=40467349
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2008/001977 Ceased WO2009076926A1 (de) | 2007-12-18 | 2008-11-27 | Hydraulikversorgungssystem für ein hydraulisch betätigtes, automatisches getriebe |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US8308606B2 (de) |
| JP (1) | JP5332005B2 (de) |
| DE (2) | DE112008003208A5 (de) |
| WO (1) | WO2009076926A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2436953A3 (de) * | 2010-10-01 | 2012-12-12 | Jatco Ltd | Fahrzeug im Schubbetrieb und Steuerverfahren dafür |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8321101B2 (en) * | 2009-05-05 | 2012-11-27 | Ford Global Technologies, Llc | Temperature dependent minimum transmission input speed |
| WO2012065240A1 (en) * | 2010-11-15 | 2012-05-24 | Nielsen Shawn James | Hybrid power system |
| KR101461922B1 (ko) * | 2013-12-18 | 2014-11-14 | 현대자동차 주식회사 | 차량용 자동변속기의 유압공급시스템 |
| DE102020114857B4 (de) * | 2020-06-04 | 2022-05-12 | Schaeffler Technologies AG & Co. KG | Elektrische Axialflussmaschine und Verstelleinrichtung für eine elektrische Axialflussmaschine |
| DE102020114856B3 (de) | 2020-06-04 | 2021-09-23 | Schaeffler Technologies AG & Co. KG | Elektrische Radialflussmaschine und Antriebsstrang |
| DE102020114855B3 (de) * | 2020-06-04 | 2021-09-23 | Schaeffler Technologies AG & Co. KG | Elektrische Maschine, Verstelleinrichtung für eine elektrische Maschine und Antriebsstrang für ein Kraftfahrzeug |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253353A2 (de) * | 2001-04-27 | 2002-10-30 | JATCO Ltd | Stufenloses Umschlingungsgetriebe |
| WO2003087627A1 (de) * | 2002-04-10 | 2003-10-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydrauliksystem, automatikgetriebe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3624656B2 (ja) * | 1997-10-29 | 2005-03-02 | 日産自動車株式会社 | エンジン自動停止車両の油圧制御装置 |
| JP3827926B2 (ja) * | 1999-07-29 | 2006-09-27 | 本田技研工業株式会社 | エンジン自動停止車両の自動変速機用油圧回路及び油圧制御装置 |
| JP4446622B2 (ja) * | 2001-03-27 | 2010-04-07 | トヨタ紡織株式会社 | 内燃機関用オイルポンプ及びその使用方法 |
| DE102005014654B4 (de) * | 2005-03-31 | 2014-03-06 | Gkn Driveline International Gmbh | Kraftfahrzeug-Hydraulikpumpe |
| WO2008101465A1 (de) * | 2007-02-23 | 2008-08-28 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Kegelscheibenumschlingungsgetriebe mit hydrauliksystem und hilfsölquelle |
-
2008
- 2008-11-27 WO PCT/DE2008/001977 patent/WO2009076926A1/de not_active Ceased
- 2008-11-27 JP JP2010538322A patent/JP5332005B2/ja not_active Expired - Fee Related
- 2008-11-27 DE DE200811003208 patent/DE112008003208A5/de not_active Withdrawn
- 2008-11-27 DE DE200810059300 patent/DE102008059300A1/de not_active Withdrawn
- 2008-12-18 US US12/317,243 patent/US8308606B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1253353A2 (de) * | 2001-04-27 | 2002-10-30 | JATCO Ltd | Stufenloses Umschlingungsgetriebe |
| WO2003087627A1 (de) * | 2002-04-10 | 2003-10-23 | Luk Lamellen Und Kupplungsbau Beteiligungs Kg | Hydrauliksystem, automatikgetriebe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2436953A3 (de) * | 2010-10-01 | 2012-12-12 | Jatco Ltd | Fahrzeug im Schubbetrieb und Steuerverfahren dafür |
| US9022901B2 (en) | 2010-10-01 | 2015-05-05 | Jatco Ltd | Coast stop vehicle and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112008003208A5 (de) | 2010-08-26 |
| JP2011506880A (ja) | 2011-03-03 |
| JP5332005B2 (ja) | 2013-11-06 |
| US20090194176A1 (en) | 2009-08-06 |
| DE102008059300A1 (de) | 2009-06-25 |
| US8308606B2 (en) | 2012-11-13 |
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