CN102927160A - Clutch oil pressure control system of hydrodynamic transmission - Google Patents
Clutch oil pressure control system of hydrodynamic transmission Download PDFInfo
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- CN102927160A CN102927160A CN2012104316485A CN201210431648A CN102927160A CN 102927160 A CN102927160 A CN 102927160A CN 2012104316485 A CN2012104316485 A CN 2012104316485A CN 201210431648 A CN201210431648 A CN 201210431648A CN 102927160 A CN102927160 A CN 102927160A
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- oil pressure
- clutch
- control system
- pressure control
- valve
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- Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
Abstract
The invention discloses a clutch oil pressure control system of a hydrodynamic transmission. The clutch oil pressure control system is formed by a guide proportional solenoid valve (1), a pressure reducing valve (2), a two-position three-way hydraulic pressure reducing valve (3) and an energy accumulator (6), wherein the two-position three-way hydraulic pressure reducing valve (3) comprises a two-position three-way valve core (4) and a return spring (5). Stable clutch control oil pressure can be obtained by adopting the clutch oil pressure control system, the clutch oil pressure control system is not subjected to influence of factors such as a hydraulic medium, oil temperature and viscosity, and severe burr occurring in the clutch control oil pressure can be avoided. The clutch oil pressure control system is simple in structure, convenient to operate and wide in applied range.
Description
Technical field
The present invention relates to a kind of clutch oil pressure control system of torque converter, belong to the hydraulic control field.
Background technique
The clutch oil pressure control system of torque converter is the key technology of torque converter gear shift control, the clutch oil pressure-controlled of present various torque converters has dual mode, a kind of is the confession of the trimmer valve solution clutch of design specialized, the process of draining the oil, be used for solenoidoperated cluthes in conjunction with or discharge, another kind is to provide the pilot control oil pressure with the guide switch solenoid valve, by special circuit design, pulse control signal is provided for the guide switch solenoid valve, and with certain dutycycle the pilot control oil pressure is controlled, use again this oil pressure solenoidoperated cluthes charge oil pressure, thus solenoidoperated cluthes combination or release.
When using trimmer valve that clutch pressure is carried out process control, be characterized in simple in structure, but generally be to design for certain needs the equipment of gear shift buffering specially, if will cushion control to another equipment, must again design trimmer valve, to satisfy the buffering of this equipment is controlled requirement, so its narrow application range; Pulse signal with certain dutycycle carries out the clutch oil pressure-controlled, can reach buffering control requirement to distinct device by changing dutycycle, Applicable scope is wider, but because impulse electromagnetic valve is open loop control, restrict the many factors of its control procedure, such as hydraulic medium, oil temperature, spool matching gap, the variation of hydraulic medium viscosity etc., as long as wherein one or more factors change, the Clutch Control oil pressure will depart from desirable control mode.Simultaneously, impulse electromagnetic valve is switch electromagnetic valve, and the pilot control oil pressure is matched curve, and " burr " situation of itself is very serious, finally can cause the Clutch Control oil pressure serious " burr " phenomenon to occur.
Summary of the invention
The technical problem that the present invention solves: be to overcome the defective that the clutch oil pressure control system of existing torque converter exists, provide a kind of novel accurately, steadily, respond faster clutch oil pressure control system.
Technological scheme of the present invention
The clutch oil pressure control system of a kind of torque converter of the present invention, be made of surge reduction valve (3), accumulator (6) of guide proportion solenoid valve (1), reduction valve (2), two-bit triplet, wherein the two-bit triplet reduction valve (3) that surges comprises two-bit triplet spool (4) and return spring (5).Guide proportion solenoid valve (1) one end is connected with reduction valve (2) by inner integrated oil duct, the other end by the integrated oil duct in inside respectively with the two-bit triplet reduction valve (3) that surges, accumulator (6) and food tray (7) are connected, two-bit triplet surge reduction valve (3) by inner integrated oil duct respectively with the oil duct of work system oil pressure (P1), the oil duct of Clutch Control oil pressure (P2) and food tray (7) are connected, and reduction valve (2) is connected by the oil duct of inner integrated oil duct with work system oil pressure (P1).
Adopt the present invention can obtain stable Clutch Control oil pressure, and be not subjected to the factor affecting such as hydraulic medium, oil temperature, viscosity, can prevent that serious " burr " phenomenon from appearring in the Clutch Control oil pressure.
Description of drawings
Fig. 1 is the schematic representation of the present invention when working
Fig. 2 is the schematic representation of the present invention when not working
1. guide proportion solenoid valve, 2. reduction valve, 3. surge reduction valve, 4. two-bit triplet spool, 5. return spring, 6. accumulator, 7. food tray of two-bit triplet
Embodiment
Embodiments of the invention: describe in conjunction with Fig. 1, Fig. 2.
As shown in Figure 1, guide proportion solenoid valve (1) one end is connected with reduction valve (2) by inner integrated oil duct, the other end by the integrated oil duct in inside respectively with the two-bit triplet reduction valve (3) that surges, accumulator (6) and food tray (7) are connected, two-bit triplet surge reduction valve (3) by inner integrated oil duct respectively with the oil duct of work system oil pressure (P1), the oil duct of Clutch Control oil pressure (P2) and food tray (7) are connected, and reduction valve (2) is connected by the oil duct of inner integrated oil duct with work system oil pressure (P1).Behind the plugged, work system oil pressure (P1) provides the control oil pressure through reduction valve (2) the backward guide proportion solenoid valve of decompression (1), one tunnel proportional oil pressure of guide proportion solenoid valve (1) output acts on surge two-bit triplet spool (4) top of reduction valve (3) of two-bit triplet, the elastic force that overcomes spring (5) promotes two-bit triplet spool (4) and moves to right, the connection oil circuit is clutch feed, produce Clutch Control oil pressure (P2), clutch is able to combination, in the fuel feeding process, because of the negative feedback of clutch oil-feed, regulate clutch pressure and be stabilized to certain force value; Another road proportional oil pressure of guide proportion solenoid valve (1) output enters accumulator (6), the variation of pressured contracting spring-compensating ratio pressure, stablize proportional oil pressure, two-bit triplet is surged, and Clutch Control oil pressure (P2) that reduction valve (3) output produces is more stable.
As shown in Figure 2, after cutting off the electricity supply, because proportional oil pressure disappears, the surge two-bit triplet spool (4) of reduction valve (3) of two-bit triplet is subjected to the elastic force effect of spring and resets, namely move left to the surge left end of reduction valve (3) of two-bit triplet, the clutch feed oil circuit is closed, and the fluid in the clutch flows back to food tray (7) by the surge oil duct of reduction valve (3) of two-bit triplet, thereby clutch pressure reduces gradually, and clutch is released.Simultaneously, the fluid in guide proportion solenoid valve (1) and the accumulator (6) also flows back to food tray (7) by oil duct.
Guide proportion solenoid valve (1) is a kind of two-bit triplet Proportional valve of more negative opening, the size of Clutch Control oil pressure (P2) is subjected to the proportional oil pressure control of guide proportion solenoid valve (1) output, and the size of the proportional oil pressure of output is by the Current Control that offers guide proportion solenoid valve (1).Control module has been controlled the size of electric current.The present invention can realize clutch combination or the oil pressure control mode of separating by certain curent change pattern.
The present invention can use in two or more parallel connections, realizes many gears controls of torque converter.
In order to improve the surge speed of response of proportional oil pressure of reduction valve (3) output of two-bit triplet, two-bit triplet spool (4) adopts lighter aluminum alloy material, and part surface has improved wear-resisting property through anodization.
Claims (1)
1. the clutch oil pressure control system of a kind of torque converter of the present invention, it is characterized in that: by guide proportion solenoid valve (1), reduction valve (2), the two-bit triplet reduction valve (3) that surges, accumulator (6) consists of, guide proportion solenoid valve (1) one end is connected with reduction valve (2) by inner integrated oil duct, the other end by the integrated oil duct in inside respectively with the two-bit triplet reduction valve (3) that surges, accumulator (6) and food tray (7) are connected, two-bit triplet surge reduction valve (3) by inner integrated oil duct respectively with the oil duct of work system oil pressure (P1), the oil duct of Clutch Control oil pressure (P2) and food tray (7) are connected, and reduction valve (2) is connected by the oil duct of inner integrated oil duct with work system oil pressure (P1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104316485A CN102927160A (en) | 2012-10-28 | 2012-10-28 | Clutch oil pressure control system of hydrodynamic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104316485A CN102927160A (en) | 2012-10-28 | 2012-10-28 | Clutch oil pressure control system of hydrodynamic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927160A true CN102927160A (en) | 2013-02-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104316485A Pending CN102927160A (en) | 2012-10-28 | 2012-10-28 | Clutch oil pressure control system of hydrodynamic transmission |
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| CN (1) | CN102927160A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154142A (en) * | 2014-07-30 | 2014-11-19 | 贵州凯星液力传动机械有限公司 | Hydraulic transmission control valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020008425A1 (en) * | 2000-06-01 | 2002-01-24 | Hiroaki Kitamoto | Valve apparatus for controlling hydraulic pressure for a clutch or a brake and method for controlling hydraulic pressure |
| US20030047412A1 (en) * | 2001-09-10 | 2003-03-13 | Masaki Shiohara | Fluid pressure control valve apparatus for clutch or brake |
| CN101737438A (en) * | 2008-11-12 | 2010-06-16 | 比亚迪股份有限公司 | Automobile clutch hydraulic control system and control method thereof |
| CN201723693U (en) * | 2010-04-15 | 2011-01-26 | 浙江吉利汽车研究院有限公司 | Hydraulic control device for automatic double-clutch speed changer |
| CN102062204A (en) * | 2010-11-16 | 2011-05-18 | 浙江吉利汽车研究院有限公司 | Clutch hydraulic control device of double-clutch automatic transmission |
-
2012
- 2012-10-28 CN CN2012104316485A patent/CN102927160A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020008425A1 (en) * | 2000-06-01 | 2002-01-24 | Hiroaki Kitamoto | Valve apparatus for controlling hydraulic pressure for a clutch or a brake and method for controlling hydraulic pressure |
| US20030047412A1 (en) * | 2001-09-10 | 2003-03-13 | Masaki Shiohara | Fluid pressure control valve apparatus for clutch or brake |
| CN101737438A (en) * | 2008-11-12 | 2010-06-16 | 比亚迪股份有限公司 | Automobile clutch hydraulic control system and control method thereof |
| CN201723693U (en) * | 2010-04-15 | 2011-01-26 | 浙江吉利汽车研究院有限公司 | Hydraulic control device for automatic double-clutch speed changer |
| CN102062204A (en) * | 2010-11-16 | 2011-05-18 | 浙江吉利汽车研究院有限公司 | Clutch hydraulic control device of double-clutch automatic transmission |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154142A (en) * | 2014-07-30 | 2014-11-19 | 贵州凯星液力传动机械有限公司 | Hydraulic transmission control valve |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130213 |