CN103322156B - transmission control fluid diffuser - Google Patents
transmission control fluid diffuser Download PDFInfo
- Publication number
- CN103322156B CN103322156B CN201310093279.8A CN201310093279A CN103322156B CN 103322156 B CN103322156 B CN 103322156B CN 201310093279 A CN201310093279 A CN 201310093279A CN 103322156 B CN103322156 B CN 103322156B
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- CN
- China
- Prior art keywords
- diffuser
- tension loop
- speed changer
- cross
- fluid
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Classifications
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- 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
- F16H61/0003—Arrangement or mounting of elements of the control apparatus, e.g. valve assemblies or snapfittings of valves; Arrangements of the control unit on or in the transmission gearbox
- F16H61/0009—Hydraulic control units for transmission control, e.g. assembly of valve plates or valve units
-
- 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
- F16H2061/0046—Details of fluid supply channels, e.g. within shafts, for supplying friction devices or transmission actuators with control fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Details Of Gearings (AREA)
- Control Of Transmission Device (AREA)
Abstract
The invention discloses a kind of speed changer, this speed changer comprises the high tension loop that is filled with at least partly the transmission fluid under the first pressure, be filled with at least partly the low tension loop of the transmission fluid under the second pressure, this second pressure is lower than the first pressure. Also disclose a kind of diffuser, this diffuser is communicated with high tension loop and low tension loop fluid. This diffuser comprises entrance, and this entrance has the first cross-sectional area, and receives transmission fluid from high tension loop. Diffuser is discharged to low tension loop by the outlet with the second cross-sectional area by transmission fluid, and this second cross-sectional area is greater than the first cross-sectional area.
Description
Technical field
The present invention relates to the management of transmission fluid in hybrid power and traditional speed changer.
Background technology
Automobile and other vehicles carry out the power of in the future autonomous prime mover and turn round with the speed changer of fluid fillingTorque conversion is outputting power and moment of torsion. The part of the speed changer of fluid filling can be added by one or more pumpsPress.
Summary of the invention
A kind of speed changer is provided. This speed changer comprises the speed change being filled with at least partly under the first pressureThe high tension loop of device fluid filling, and be filled with at least partly transmission fluid under the second pressureLow tension loop. The second pressure is lower than the first pressure. Speed changer also comprises diffuser, this diffuser and high pressureLoop and low tension loop fluid are communicated with.
This diffuser comprises entrance, and this entrance has the first cross-sectional area, and receives from high tension loopTransmission fluid. This diffuser also comprises outlet, and this outlet has the second cross-sectional area, and will becomeSpeed device fluid expulsion is to low tension loop. The second cross-sectional area of this diffuser is greater than the first cross section faceLong-pending.
In the time understanding by reference to the accompanying drawings, above-mentioned feature and advantage of the present invention and other feature and advantage underFace is realized the detailed of optimal modes more of the present invention defined in the appended claims and other embodimentDescribe very apparent.
Brief description of the drawings
Fig. 1 is the schematic diagram of hybrid gearbox;
Fig. 2 is that side cover removes to show that the schematic plan of the speed changer of the diffuser in case of transmission looksFigure;
Fig. 3 is the axonometric drawing such as schematic from the entrance area of the diffuser of Fig. 2 and exit region; With
Fig. 4 is the axonometric drawing such as schematic of the entrance area of alternative diffuser and exit region.
Detailed description of the invention
With reference to accompanying drawing, wherein, in any possibility situation, similar Reference numeral in whole a few width accompanying drawingsCorresponding to similar or similar parts, in Fig. 1, show speed changer 10, it can (not show with various vehiclesGo out) use together. Speed changer 10 shows with high-level schematic, and illustrates the biography for vehicleUnify a lot of different structures of hybrid gearbox.
Although the present invention is applied and be have been described in detail about automobile, those of skill in the artTo recognize applicability widely of the present invention. Person having ordinary skill in the art will realizeArrive, the terms such as for example " top ", " below ", " upwards ", " downwards " are for making in descriptive manner about accompanying drawingWith, not representing to limit the scope of the invention, scope of the present invention is defined by the following claims. Any numberWord, label, for example " first " or " second " are only illustrative, and are intended to limit never in any formScope of the present invention.
Speed changer 10 comprises case of transmission 12, its conventionally around and surround other portions of speed changer 10Part. Valve body assembly 14 receives and distributes to come the pressure fluid of self-pumping 16.
Pump 16 can be electrodynamic pump or directly or indirectly by one or more main prime mover of speed changer 10The mechanical pump that (not shown) drives. Pump 16 can be also torque-converters. Working fluid can be that automobile becomesSpeed device fluid or oil can be maybe any other suitable working fluids.
High-pressure area or high tension loop 18 are filled with the transmission fluid under the first pressure, and this is first years oldPressure is the pressure that carrys out the rising of self-pumping 16. High tension loop 18 is conventionally around valve body assembly 14, andCan therefore there is the pressure of multiple risings according to the structure of valve body assembly 14.
Low tension loop 20 is filled with the transmission fluid under the second pressure at least partly, this second pressurePower is lower than the first pressure. Low tension loop is not pumped, and can in or approach environmental pressure.
Speed changer 10 further comprises first clutch 22, and it is fluid-actuated clutch, and second fromClose device 24, it is also fluid-actuated clutch. Valve body assembly 14 and first clutch 22 and second fromClose device 24 fluids and be communicated with, and be configured to selectively activate first clutch 22 and second clutch 24Both. Speed changer 10 also comprises motor 26, and therefore speed changer 10 can be called as hybrid gearbox10。
Diffuser 30 is communicated with high tension loop 18 and low tension loop 20 fluids. Diffuser 30 can be placed onThe exit of valve body assembly 14, so that it selectively receives pressure fluid from valve body assembly 14.
Diffuser 30 has entrance 32 and outlet 34. Entrance 32 has the first cross-sectional area, andReceive transmission fluid from high tension loop 18. Outlet 34 has the second cross-sectional area, and it is greater than firstCross-sectional area, and transmission fluid is discharged to low tension loop 20.
Conventionally, the first pressure of high tension loop 18 refer to by or approach to very much the entrance 32 of diffuser 30The pressure that provides of fluid. Diffuser 30 stands the pressure between high tension loop 18 and low tension loop 20Poor. Maximum pressure differential may appear at discharge event procedure in, wherein first clutch 22 and second fromClose one or two in device 24 by fast evacuation. Diffuser 30 is reduced in valve body assembly 14 and becomesThe speed of mobile transmission fluid between speed device housing 12. This Speed Reduction can reduce to be flowed by speed changerBody clashes into the noise of the internal part generation of case of transmission 12 or speed changer 10.
Referring now to Fig. 2, and continue with reference to Fig. 1, in Fig. 2, shown the schematic diagram of speed changer 110,It is some the illustration in the structure schematically showing in Fig. 1. Speed changer 110 comprises case of transmission112, its conventionally around and encapsulation speed changer 110 miscellaneous part.
Valve body assembly 114 major parts are hidden from view, and just reception and distribution carry out self-pumping (not shown)Pressure fluid. Speed changer 110 also comprises that the high tension loop that is positioned at valve body assembly 114 is (from viewHide), and be positioned at the low tension loop 120 of the remainder of case of transmission 112. Case of transmission112 show that side cover part is removed, so that internal part to be shown better.
Speed changer 110 comprises diffuser 130, and this diffuser 130 is arranged in high tension loop and low tension loopBetween 120. During valve body assembly 114 is just discharging automotive transmission fluid, diffuser 130 is at heightTransmitting fluid between hydraulic circuit and low tension loop 120. Diffuser 130 provides a space, and oil supply and discharge is enteringThe low tension loop 120 that enters case of transmission 112 is slowed down before and expands. Therefore diffuser 130 can addFlow at high speed in strong valve body assembly 114 flows and lower to case of transmission 112 much slowTransformation between pressure.
The entrance 132 of diffuser 130 receives the transmission fluid from high tension loop, and speed changer 130Outlet 134 transmission fluid is discharged to low tension loop 120. Entrance 132 major parts are from Fig. 2View is hidden. Entrance 132 has the first cross-sectional area, and outlet 134 has the second cross-sectional area,This second cross-sectional area is greater than the first cross-sectional area. In the structure shown in Fig. 2, diffuser 130Entrance 132 be arranged on any fluid clutch (not shown) for speed changer 110 with respect to gravityThe highest fluid circuit on.
Also with reference to Fig. 3, and continue with reference to Fig. 1-2, in Fig. 3, shown the diffuser shown in Fig. 2Another view of 130. Fig. 3 has shown the axonometric drawing that waits of diffuser 130, and it is with respect to institute in Fig. 2The view rotation of showing, to show better entrance 132 and outlet 134.
The first cross-sectional area of the entrance 132 of diffuser 130 is with respect to the outlet 134 of diffuser 130Arrange with the angle of at least nine ten degree with the second cross-sectional area. Outlet 134 is substantially perpendicular to entrance132. Cross-sectional area can intercept the table of the plane substantially for covering entrance 132 and outlet 134Face.
Diffuser 130 is also included between entrance 132 and outlet 134 and partly forms outlet 134Relative wall 136. This relative wall 136 is to be substantially perpendicular to transmission fluid by entrance 132The planar structure of flow direction. In other words, wall 136 is arranged essentially parallel to first of entrance 132 relativelyCross-sectional area.
In discharge event procedure, wherein one or more clutches are drained transmission fluid, and height pushes backPressure ratio between road and low tension loop 120 is equal to or greater than 100. But, in some cases, pressForce rate can be up to 500.
In the situation that there is no diffuser 130, the high speed transmission fluid of leaving valve body assembly 114 canCan impact the miscellaneous part of case of transmission 112 or speed changer 110. But diffuser 130 is in speed changeDevice fluid enters may, for before the low tension loop 120 of surrounding environment, having reduced of case of transmission 112The speed of transmission fluid.
The relative size of the shape of change diffuser 130 and entrance 132 and outlet 134 can affect to be passed throughThe Speed Reduction that diffuser 130 obtains. Diffuser 130 can have the first cross section that is equal to or greater than fourDiffuser area ratio between area and the second cross-sectional area. In the structure shown in Fig. 2 and 3, expandThe real area ratio of loose device 130 is about 4.6. Shown diffuser 130 stands in entrance 132 and outletThe reduction between 75-85% of the oily speed flowing between 134.
Diffuser 130 can be formed by nylon. Alternatively, diffuser 130 can be by metal, plastics or otherSuitable material forms.
Referring now to Fig. 4, and continue with reference to Fig. 1-3, shown the axonometric drawing that waits of diffuser 230.Fig. 4 has shown the diffuser 230 from seeing to the similar visual angle of the diffuser 130 shown in Fig. 3. ExpandLoose device 230 also can use together with the speed changer 110 shown in Fig. 2.
The entrance 232 of diffuser 230 receives high-pressure fluid, and outlet 234 is discharged to transmission fluid lowNip territory. The Area Ratio of the diffuser 230 shown in Fig. 4 is approximately 4.2.
The first cross-sectional area of the entrance 232 of diffuser 230 is equally with respect to the outlet of diffuser 230The second cross-sectional area of 234 is arranged with the angle of approximately 90 degree, so that outlet 234 is perpendicular to entrance232. But diffuser 230 is substantially perpendicular to transmission fluid not included in entrance 232 places and flowsThe planar wall of direction.
Table 1 below shows the simulation test result of diffuser 130 and diffuser 230. This surveyExamination is used computational fluid dynamics software. Be used for the working fluid of this test under approximately 30 degrees CelsiusAutomotive transmission fluid (AFT), it also can be called as transmission oil. Two pressure differentials are applied to expandingLoose device 130 and diffuser 230 both.
As shown in table 1, diffuser 130 is reducing the average speed that leads to the fluid of low pressure from high-pressure sprayAspect shows relatively better than diffuser 230. Diffuser 130 is 100 kPas (kPa) in pressure differentialTime and pressure differential show better while being 500 kPas. But the result shown in table 1 does not showDiffuser 230 or other diffuser structures are not useable for reducing the speed of oil extraction transmission. Tool used hereinBody numerical value and unit are only exemplary, and the scope not limiting the present invention in any way.
Detailed description and figure or accompanying drawing are to support of the present invention and description, but scope of the present invention onlyBe defined by the claims. Although described in detail realize claimed optimal mode of the present invention andOther embodiment, but existing plurality of replaceable design and implementation example to put into practice in claims limitsThe present invention.
Cross reference
The application requires the power of the U.S. Provisional Patent Application 61/614,873 of submitting on March 23rd, 2012Benefit, the disclosure of this application is incorporated herein by reference at this.
Claims (8)
1. a speed changer, comprising:
High tension loop, it is filled with the transmission fluid under the first pressure at least partly;
Low tension loop, it is filled with the transmission fluid under the second pressure at least partly, this second pressurePower is lower than the first pressure; With
Diffuser, it is communicated with high tension loop and low tension loop fluid, and wherein said diffuser comprises:
Entrance, it has the first cross-sectional area, and receives transmission fluid from high tension loop, and
Outlet, it has the second cross-sectional area that is greater than the first cross-sectional area, and by speed changerFluid expulsion is to low tension loop;
Fluid clutch, it has fluid circuit; With
Valve body, it is communicated with fluid circuit fluid, and is configured for actuating fluid clutch, whereinDescribed valve body is a part for high tension loop,
The first cross section of wherein said diffuser is substantially perpendicular to the second cross section.
2. speed changer according to claim 1, the wherein pressure between high tension loop and low tension loopDifference is equal to or greater than 100 kPas.
3. speed changer according to claim 2, wherein diffuser have be equal to or greater than four firstDiffuser area ratio between cross-sectional area and the second cross-sectional area.
4. speed changer according to claim 3, wherein low tension loop is pressed in surrounding environment substantiallyUnder power.
5. speed changer according to claim 4, wherein the entrance of diffuser is arranged on respect to gravityFor on the fluid circuit of fluid clutch.
6. speed changer according to claim 5, further comprises motor, and therefore described speed changer isHybrid gearbox.
7. speed changer according to claim 6, wherein diffuser is formed by nylon.
8. speed changer according to claim 7, wherein diffuser comprises and is arranged essentially parallel to entranceThe planar wall of the first cross-sectional area.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201261614873P | 2012-03-23 | 2012-03-23 | |
| US61/614,873 | 2012-03-23 | ||
| US13/595,231 | 2012-08-27 | ||
| US13/595,231 US9121460B2 (en) | 2012-03-23 | 2012-08-27 | Transmission control fluid diffuser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103322156A CN103322156A (en) | 2013-09-25 |
| CN103322156B true CN103322156B (en) | 2016-05-04 |
Family
ID=49112440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310093279.8A Active CN103322156B (en) | 2012-03-23 | 2013-03-22 | transmission control fluid diffuser |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103322156B (en) |
| DE (1) | DE102013204907B4 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044325A (en) * | 2004-08-10 | 2007-09-26 | L·豪格 | Pressure exchanger |
| CN101147014A (en) * | 2005-03-22 | 2008-03-19 | Zf腓德烈斯哈芬股份公司 | Method and device for controlling the oil supply of an automatic gearbox and a starting element |
| CN101230920A (en) * | 2006-07-17 | 2008-07-30 | 赫尔比格驱动技术有限公司 | Method of operating a dct hydraulic power control system as well as dct hydraulic power control system |
| CN102042189A (en) * | 2009-10-22 | 2011-05-04 | 通用汽车环球科技运作公司 | Pump arrangement |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6390783B1 (en) * | 2000-01-28 | 2002-05-21 | Delphi Technologies, Inc. | Hydraulic pump having low aeration single return boost reservoir |
| US6783334B2 (en) | 2002-05-31 | 2004-08-31 | Delphi Technologies, Inc. | Hydraulic pump reservoir having deaeration diffuser |
-
2013
- 2013-03-20 DE DE102013204907.2A patent/DE102013204907B4/en active Active
- 2013-03-22 CN CN201310093279.8A patent/CN103322156B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101044325A (en) * | 2004-08-10 | 2007-09-26 | L·豪格 | Pressure exchanger |
| CN101147014A (en) * | 2005-03-22 | 2008-03-19 | Zf腓德烈斯哈芬股份公司 | Method and device for controlling the oil supply of an automatic gearbox and a starting element |
| CN101230920A (en) * | 2006-07-17 | 2008-07-30 | 赫尔比格驱动技术有限公司 | Method of operating a dct hydraulic power control system as well as dct hydraulic power control system |
| CN102042189A (en) * | 2009-10-22 | 2011-05-04 | 通用汽车环球科技运作公司 | Pump arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013204907B4 (en) | 2020-06-04 |
| CN103322156A (en) | 2013-09-25 |
| DE102013204907A1 (en) | 2013-09-26 |
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