CN104948729A

CN104948729A - Electrohydraulic control system for seven-speed oppositely-arranged dual-clutch transmission

Info

Publication number: CN104948729A
Application number: CN201510234949.2A
Authority: CN
Inventors: 孙保群; 胡松华; 陶城; 陶晓敏; 周坤鹏; 曲凯宁; 汪韶杰; 夏光; 彭建刚
Original assignee: Hefei University of Technology
Current assignee: Hefei Luyang Technology Innovation Group Co ltd
Priority date: 2015-05-11
Filing date: 2015-05-11
Publication date: 2015-09-30
Anticipated expiration: 2035-05-11
Also published as: CN104948729B

Abstract

The invention relates to an electrohydraulic control system for a seven-speed oppositely-arranged dual-clutch transmission. The electrohydraulic control system comprises a motor pump, a motor, a one-way valve, an overflow valve, an energy accumulator, a hand control valve, a first gearshift control unit, a second gearshift control unit, a third gearshift control unit, a fourth gearshift control unit, a first clutch control unit, a second clutch control unit and a fifth electromagnetic valve. By manually controlling the hand control valve, four states of Parking, Reversing, Neutral and Drive gears P, R, N and D are realized; via gearshift and double-clutch power transmission control of the first gearshift control unit, the second gearshift control unit, the third gearshift control unit, the fourth gearshift control unit, the first clutch control unit and the second clutch control unit, speed-variable transmission of seven drive gears and one reverse gear is realized, and presetting of shifted gears during shifting of the drive gear, namely, pre-shifting, can be realized.

Description

A kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems

Technical field

The invention belongs to for transmission for vehicles control system, what be specifically related to is a kind of electrohydraulic control system for 7 fast opposed type dual-clutch transmissions.

Background technique

Transmission for vehicles is divided into manual transmission and automatic transmission.Manual transmission can only be shifted gears by manual hand manipulation, and automatic transmission then can realize self shifter; According to structure and variable speed operation implementation, automatic transmission is divided into several forms such as automatic mechanical transmission (AMT), power gear shifting automatic transmission (AT), stepless speed variator (CVT) and dual-clutch transmission (DSG).At present, the automatic gear change function of automatic transmission generally controls indexing servo by transmission electronic control unit (TCU) and executive system realizes; Indexing servo and executive system can be divided into again electronic, pneumatic and hydraulic pressure three types, and the mainly hydraulic control system usually adopted at most.In hydraulic gear-shifting servo and executive control system, according to control signal, servoelement and actuator's type, all-hydraulic control and the large class of electrichydraulic control two can be divided into again.All-hydraulic control refers to that control signal and servo implementation are all hydraulic way, owing to driver's operation must be intended to, motor and vehicle operating status etc. be all converted to hydraulic pressure signal in order to control automatic speed changing, cause that system complex, control accuracy are low, low-response, rate of fault are high, no longer adopt in modern vehicle automatic shift control; Electrichydraulic control uses solenoid valve to control the actuator of gearshift executive system to realize automatic speed changing as servo control element, and what current most of vehicle automatic transmission adopted is all this pattern.In automatic speed changing electrohydraulic control system, according to the control mode of solenoid valve to gear shifting actuating mechanism actuator oil circuit, direct control type and indirect control formula two kinds of fundamental types can be divided into; Direct control type has controlled shift speed change with proportional electromagnetic valve and Multi-position electromagnetic valve to actuator oil circuit, its advantage is that system architecture is relatively simple, gearshift precision is high, response is fast, shortcoming is that used electromagnetic valve structure is complicated, manufacture cost is high, it is high, responsive to hydraulic oil pollution to require magnetic valve performance and control accuracy, and system failure rate is relatively high; Indirect control formula is high speed switch type solenoid valve (PWM control) control to servo guiding valve by utilizing the simple switching mode solenoid valve of structure, solenoid directional control valve or pulse-width signal to drive, indirect control actuator oil circuit completes shift speed change, although its system parts is more, structure relative complex, control response are relatively slow, but electromagnetic valve structure used is simple, control is easy, require low to magnetic valve performance and control accuracy, system is insensitive to hydraulic oil pollution, and system failure rate, difficulty of processing and manufacture cost are also relatively low; In conjunction with directly controlling and indirectly controlling two profiles formula, also can form Hybrid mode formula electrohydraulic control system, be characterized in the simple solenoid directional control valve of structure direct control section actuator oil circuit, simultaneously by the high speed switch type solenoid valve that utilizes simple electromagnetic switch valve, solenoid directional control valve or pulse-width signal to drive to the control of servo guiding valve, the other a part of actuator oil circuit of indirect control, thus mixing type hydraulic control system has the feature directly controlling and indirectly control two profiles formula concurrently.

Summary of the invention

In order to reduce gearshift of vehicle transmission electrohydraulic control system parts machining difficulty and manufacture cost, improve system reliability, the present invention proposes a kind ofly to reverse gear and the electrohydraulic control system of coaxial opposed type clutch dual-clutch transmission of 7 forward gears for having 1.

A kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems comprise motor-drive pump 30, motor 31, one-way valve 32, relief valve 33, accumulator 35, hand control valve 10, first shift control unit, the second shift control unit, the 3rd shift control unit, the 4th shift control unit, first clutch control unit, second clutch control unit and the 5th solenoid valve 23;

Described first shift control unit is connected and composed successively by the first two-way cylinder 11, first guiding valve 15 and the first solenoid valve 19, controls putting into gear or moving back shelves of the first forward gear D1 and the 3rd forward gear D3; Second shift control unit is connected and composed successively by the second two-way cylinder 12, second guiding valve 16 and the second solenoid valve 20, controls putting into gear or moving back shelves of the second forward gear D2 and the 4th forward gear D4; 3rd shift control unit is connected and composed successively by the 3rd two-way cylinder 13, the 3rd guiding valve 17 and the 3rd solenoid valve 21, controls putting into gear or moving back shelves of the 7th forward gear D7 and the 5th forward gear D5; 4th shift control unit is connected and composed successively by the 4th two-way cylinder 14, the 4th guiding valve 18 and the 4th solenoid valve 22, controls to reverse gear the putting into gear or moving back shelves of R and the 6th forward gear D6;

Described first clutch control unit by the first unidirectional oil cylinder 26 and the 6th solenoid valve 24 in series, control the first forward gear D1, the 3rd forward gear D3, the 5th forward gear D5 and the 7th forward gear D7 power combine or interrupt; Described second clutch control unit by the second unidirectional oil cylinder 27 and the 7th solenoid valve 25 in series, control the second forward gear D2, the 4th forward gear D4, the 6th forward gear D6 and the R that reverses gear power combine or interrupt;

Described first shift control unit, the second shift control unit, the 3rd shift control unit, the 4th shift control unit and first clutch control unit, second clutch control unit form shifting and double-clutch power transmission controlling functions, realize 7 forward gears and 1 speed Control of reversing gear.

The concrete structure of described 7 fast opposed type dual-clutch transmission electrohydraulic control systems is described below:

The hydraulic fluid port 11A of the rodless cavity of described first two-way cylinder 11 is communicated with the second hydraulic fluid port 15B of the first guiding valve 15, the hydraulic fluid port 11B of rod chamber is communicated with the first hydraulic fluid port 15A of the first guiding valve 15 simultaneously and the hydraulic fluid port 19A of the first solenoid valve 19; The drain tap 15T of described first guiding valve 15 is communicated with oil groove 28, control port 15X and is communicated with the first hydraulic fluid port 23A of the 5th solenoid valve 23; After the filler opening 19P of described first solenoid valve 19 is communicated with valve, oil pipe 202, drain tap 19T are communicated with oil groove 28; After the filler opening 23P of described 5th solenoid valve 23 is communicated with valve, oil pipe 202, drain tap 23T are communicated with oil groove 28; When to the rodless cavity of the first two-way cylinder 11 and rod chamber simultaneously fuel feeding time make its piston move to right position to realize the gear of forward gear D1 preset, when the rodless cavity draining of the first two-way cylinder 11, simultaneously to its rod chamber fuel feeding time, making its piston move to left position, to realize the gear of forward gear D3 preset, when rodless cavity and the rod chamber of the first two-way cylinder 11 while during draining, make its piston rest in present position, realize neutral N when the piston of the first two-way cylinder 11 moves to neutral position;

The hydraulic fluid port 12A of the rodless cavity of described second two-way cylinder 12 is communicated with the second hydraulic fluid port 16B of the second guiding valve 16, the hydraulic fluid port 12B of rod chamber is communicated with the first hydraulic fluid port 16A of the second guiding valve 16 simultaneously and the hydraulic fluid port 20A of the second solenoid valve 20; The drain tap 16T of described second guiding valve 16 is communicated with oil groove 28, control port 16X and is communicated with the hydraulic fluid port 23A of the 5th solenoid valve 23; After the filler opening 20P of described second solenoid valve 20 is communicated with valve, oil pipe 202, drain tap 20T are communicated with oil groove 28; When to the rodless cavity of the second two-way cylinder 12 and rod chamber simultaneously fuel feeding time, making its piston move to right position, to realize the gear of forward gear D4 preset, when the rodless cavity draining of the second two-way cylinder 12, simultaneously to its rod chamber fuel feeding time, making its piston move to left position, to realize the gear of forward gear D2 preset, when rodless cavity and the rod chamber of the second two-way cylinder 12 while during draining, make its piston rest in present position, realize neutral N when the piston of the second two-way cylinder 12 moves to neutral position;

The hydraulic fluid port 13A of the rodless cavity of described 3rd two-way cylinder 13 is communicated with the second hydraulic fluid port 17B of the 3rd guiding valve 17, the hydraulic fluid port 13B of rod chamber is communicated with the first hydraulic fluid port 17A of the 3rd guiding valve 17 simultaneously and the hydraulic fluid port 21A of the 3rd solenoid valve 21; The drain tap 17T of described 3rd guiding valve 17 is communicated with oil groove 28, control port 17X and is communicated with the hydraulic fluid port 23A of the 5th solenoid valve 23; After the filler opening 21P of described 3rd solenoid valve 21 is communicated with valve, oil pipe 202, drain tap 20T are communicated with oil groove 28; When to the rodless cavity of the 3rd two-way cylinder 13 and rod chamber simultaneously fuel feeding time, making its piston move to right position, to realize the gear of forward gear D5 preset, when the rodless cavity draining of the 3rd two-way cylinder 13, simultaneously to its rod chamber fuel feeding time, making its piston move to left position, to realize the gear of forward gear D7 preset, when rodless cavity and the rod chamber of the 3rd two-way cylinder 13 while during draining, make its piston rest in present position, realize neutral N when the piston of the 3rd two-way cylinder 13 moves to neutral position;

The hydraulic fluid port 14A of the rodless cavity of described 4th two-way cylinder 14 is communicated with the second hydraulic fluid port 18B of the 4th guiding valve 18, the hydraulic fluid port 14B of rod chamber is communicated with the first hydraulic fluid port 17A of the 4th guiding valve 18 simultaneously and the hydraulic fluid port 22A of the 4th solenoid valve 22; The drain tap 18T of described 4th guiding valve 18 is communicated with oil groove 28, control port 18X and is communicated with the hydraulic fluid port 23A of the 5th solenoid valve 23; After the filler opening 22P of described 4th solenoid valve 22 is communicated with valve, oil pipe 202, drain tap 20T are communicated with oil groove 28; When to the rodless cavity of the 4th two-way cylinder 14 and rod chamber simultaneously fuel feeding time, making its piston move to right position, to realize the gear of forward gear D6 preset, when the rodless cavity draining of the 4th two-way cylinder 14, simultaneously to its rod chamber fuel feeding time, its piston is made to move to left position realize the reversing gear gear of R preset, when rodless cavity and the rod chamber of the 4th two-way cylinder 14 while during draining, make its piston rest in present position, realize neutral N when the piston of the 4th two-way cylinder 14 moves to neutral position;

The hydraulic fluid port 26A of described first unidirectional oil cylinder 26 is communicated with the hydraulic fluid port 24A of the 6th solenoid valve 24; After the filler opening 24P of described 6th solenoid valve 24 is communicated with valve, oil pipe 202, drain tap 24T are communicated with oil groove 28; During to the first unidirectional oil cylinder 26 fuel feeding, its piston is moved to transmission that right position realizes a certain gear in forward gear D1, D3, D5, D7, during the first unidirectional oil cylinder 26 draining, its piston is made to be displaced downwardly in action of reset spring the transmission that a certain gear in forward gear D1, D3, D5, D7 is interrupted in left position;

The hydraulic fluid port 27A of described second unidirectional oil cylinder 27 is communicated with the hydraulic fluid port 25A of the 7th solenoid valve 25; After the filler opening 25P of described 7th solenoid valve 25 is communicated with valve, oil pipe 202, drain tap 25T are communicated with oil groove 28; During to the second unidirectional oil cylinder 27 fuel feeding, make its piston move to right position to realize reversing gear the transmission of a certain gear in R or forward gear D2, D4, D6, during the second unidirectional oil cylinder 27 draining, make its piston be displaced downwardly to left position in action of reset spring and to interrupt reversing gear the transmission of a certain gear in R or forward gear D2, D4, D6;

Described motor-drive pump 30 and motor 31 are in transmission connection by motor shaft EMZ, and the first hydraulic fluid port 30A of motor-drive pump 30 connects filter 29, and the first hydraulic fluid port 29A of filter 29 is communicated with oil groove 28; Second hydraulic fluid port 30B of motor-drive pump 30 is communicated with the first hydraulic fluid port 32A of one-way valve 32, and the second hydraulic fluid port 32B of one-way valve 32 connects the filler opening 10P of the first hydraulic fluid port 33A, the hydraulic fluid port 34P of oil pressure sensor 34 of relief valve 33, the hydraulic fluid port 35P of accumulator 35 and hand control valve 10 by oil pipe before valve 201 simultaneously; One-way valve 32 conducting when the pressure at the first hydraulic fluid port 32A place of one-way valve 32 is greater than its second hydraulic fluid port 32B, when the pressure at the first hydraulic fluid port 32A place of one-way valve 32 is less than its second hydraulic fluid port 32B, one-way valve 32 ends; When the oil pressure at the first hydraulic fluid port 33A place of relief valve 33 exceedes the oil pressure maximum value of setting, its first hydraulic fluid port 33A is communicated with the second hydraulic fluid port 33B, fluid before valve in oil pipe 201 flow to oil groove 28 through the first hydraulic fluid port 33A of relief valve 33 and the second hydraulic fluid port 33B, make valve before oil pressure in oil pipe 201 reduce, when the oil pressure at the first hydraulic fluid port 33A place of relief valve 33 is less than or equal to the oil pressure maximum value of setting, its first hydraulic fluid port 33A, the second hydraulic fluid port 33B end simultaneously; When oil pressure in oil pipe before valve 201 is lower than system Minimum operating pressure, motor 31 works, and when oil pressure in oil pipe before valve 201 is higher than system Maximum operating pressure, motor 31 quits work; Described accumulator 35 is spring piston type energy storage means, when the pressure of oil pipe 201 before the internal pressure of accumulator 35 is lower than valve, before valve, oil pipe 201 is oil-filled to it by the hydraulic fluid port 35P of accumulator 35, when the pressure of oil pipe 201 before the internal pressure of accumulator 35 is higher than valve, accumulator 35 by its hydraulic fluid port 35P to oil pipe 201 fuel feeding before valve; Described hand control valve 10 has parking gear P, the R that reverses gear, neutral N and forward gear D tetra-valve position, when hand control valve 10 is in parking gear P position, its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends, be in when reversing gear R position, its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends, when being in neutral N position, its filler opening 10P ends, hydraulic fluid port 10A is communicated with drain tap 10T, and when being in forward gear D position, its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends.

Described first two-way cylinder 11, second two-way cylinder 12, the 3rd two-way cylinder 13 and the 4th two-way cylinder 14 are single pole two-way cylinder.

Described first unidirectional oil cylinder 26 and the second unidirectional oil cylinder 27 are the annular one-way cylinder with Returnning spring.

Described first solenoid valve 19, second solenoid valve 20, the 3rd solenoid valve 21, the 4th solenoid valve 22 and the 5th solenoid valve 23 are all switching mode 23 three-way electromagnetic valves, described 6th solenoid valve 24 and the 7th solenoid valve 25 are high speed switch type 23 three-way electromagnetic valves driven with pwm signal, and each solenoid valve being all in the 1st respective valve position, being all in the 2nd respective valve position when being energized when power-off; Inter-communicational relationship when first solenoid valve 19, second solenoid valve 20, the 3rd solenoid valve 21, the 4th solenoid valve 22, the 5th solenoid valve 23, the 6th solenoid valve 24 and the 7th solenoid valve 25 are in different valve position is:

When first solenoid valve 19 is in the 1st valve position, its hydraulic fluid port 19A is communicated with drain tap 19T, filler opening 19P end, its drain tap 19T cut-off, filler opening 19P connection hydraulic fluid port 19A when being in the 2nd valve position;

When second solenoid valve 20 is in the 1st valve position, its hydraulic fluid port 20A is communicated with drain tap 20T, filler opening 20P end, its drain tap 20T cut-off, filler opening 20P connection hydraulic fluid port 20A when being in the 2nd valve position;

When 3rd solenoid valve 21 is in the 1st valve position, its hydraulic fluid port 21A is communicated with drain tap 21T, filler opening 21P end, its drain tap 21T cut-off, filler opening 21P connection hydraulic fluid port 21A when being in the 2nd valve position;

When 4th solenoid valve 22 is in the 1st valve position, its hydraulic fluid port 22A is communicated with drain tap 22T, filler opening 22P end, its drain tap 22T cut-off, filler opening 22P connection hydraulic fluid port 22A when being in the 2nd valve position;

When 5th solenoid valve 23 is in the 1st valve position, its hydraulic fluid port 23A is communicated with drain tap 23T, filler opening 23P end, its drain tap 23T cut-off, filler opening 22P connection hydraulic fluid port 23A when being in the 2nd valve position;

When 6th solenoid valve 24 is in the 1st valve position, its hydraulic fluid port 24A is communicated with drain tap 24T, filler opening 24P end, its drain tap 24T cut-off, filler opening 24P connection hydraulic fluid port 24A when being in the 2nd valve position;

When 7th solenoid valve 25 is in the 1st valve position, its hydraulic fluid port 25A is communicated with drain tap 25T, filler opening 25P end, its drain tap 25T cut-off, filler opening 25P connection hydraulic fluid port 25A when being in the 2nd valve position.

Described motor-drive pump 30 is valve plate-type volume rotor pumps, or external gear pump, or crescent gear pump, or internal messing cycloid rotor pump.

The DC electromotor with brush of described motor 31 to be operating voltages be 8 ~ 32V, or operating voltage is the permanent-magnetic brush-less DC motor of 8 ~ 32V, or operating voltage is the direct current stepping motor of 8 ~ 32V.

Described hand control valve 10 is 43 logical Non-follow control guiding valves.

advantageous Effects of the present invention embodies in the following areas:

1. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems of the present invention, can reverse gear supporting with the coaxial opposed type clutch dual-clutch transmission of 7 forward gears with having 1.

2. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems of the present invention, by controlling hand control valve 10 manually, can make speed changer realize parking gear P, reverse gear shift R, neutral N and forward gear D kind working state; By the different valve position combinations of each valve in electrohydraulic control system, speed changer can be made to realize 7 forward gears and 1 power transmission of reversing gear, and can realize in forward gear shift process preset (the putting into gear in advance) that change to gear.

3. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems of the present invention, adopt by motor-drive pump 30, motor 31, one-way valve 32, relief valve 33, oil pressure sensor 34, the electric hydaulic source that before accumulator 35 and valve, oil pipe 201 forms is separately to electrohydraulic control system feed flow of the present invention, avoid other modules of engine speed and composition speed changer to the impact of electrohydraulic control system oil pressure of the present invention and fluid flow, simultaneously, by the overflow pressure relief effect of relief valve 33, feedback control after oil pressure sensor 34 signal exports, the energy-storage buffering of accumulator 35 and compensating action, accurately can control the operating oil pressure of invention electrohydraulic control system and hydraulic flow, good energy-saving effect can be formed again.

4. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems of the present invention, driving seven 23 three-way electromagnetic valves are controlled by transmission electronic control unit TCU, namely the valve position of the first solenoid valve 19, second solenoid valve 20, the 3rd solenoid valve 21, the 4th solenoid valve 22, the 5th solenoid valve 23, the 6th solenoid valve 24 and the 7th solenoid valve 25 realizes gear shift, by setting up automatic shift control software in transmission electronic control unit TCU, the automatic speed changing between speed changer 7 forward gears can be realized.

Accompanying drawing explanation

Fig. 1 is a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system structural representations of the present invention.

Sequence number in figure: 10. hand control valve; 11. first two-way cylinders; 12. second two-way cylinders; 13. the 3rd two-way cylinders; 14. the 4th two-way cylinders; 15. first guiding valves; 16. second guiding valves; 17. the 3rd guiding valves; 18. the 4th guiding valves; 19. first solenoid valves; 20. second solenoid valves; 21. the 3rd solenoid valves; 22. the 4th solenoid valves; 23. the 5th solenoid valves; 24. the 6th solenoid valves; 25. the 7th solenoid valves; 26. first unidirectional oil cylinders; 27. second unidirectional oil cylinders; 28. oil grooves; 29. filters; 30. motor-drive pumps; 31. motors; 32. one-way valves; 33. relief valves; 34. oil pressure sensors; 35. accumulators; EMZ. motor shaft; Oil pipe before 201. valves; Oil pipe after 202. valves.

Embodiment

Below in conjunction with accompanying drawing, by embodiment, the present invention is further described.

Embodiment

See Fig. 1, a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems comprise motor-drive pump 30, motor 31, one-way valve 32, relief valve 33, accumulator 35, hand control valve 10, first shift control unit, the second shift control unit, the 3rd shift control unit, the 4th shift control unit, first clutch control unit, second clutch control unit and the 5th solenoid valve 23;

First shift control unit is connected and composed successively by the first two-way cylinder 11, first guiding valve 15 and the first solenoid valve 19, controls the first forward gear D1 and the 3rd forward gear D3 puts into gear or moves back shelves; Second control unit is connected and composed successively by the second two-way cylinder 12, second guiding valve 16 and the second solenoid valve 20, controls the second forward gear D2 and the 4th forward gear D4 puts into gear or moves back shelves; 3rd control unit is connected and composed successively by the 3rd two-way cylinder 13, the 3rd guiding valve 17 and the 3rd solenoid valve 21, controls the 7th forward gear D7 and the 5th forward gear D5 and puts into gear or move back shelves; 4th control unit is connected and composed successively by the 4th two-way cylinder 14, the 4th guiding valve 18 and the 4th solenoid valve 22, controls the R and the 6th forward gear D6 that reverses gear and puts into gear or move back shelves;

First clutch control unit by the first unidirectional oil cylinder 26 and the 6th solenoid valve 24 in series, control the first forward gear D1, the 3rd forward gear D3, the 5th forward gear D5 and the 7th forward gear D7 power combine or interrupt; Second clutch control unit by the second unidirectional oil cylinder 27 and the 7th solenoid valve 25 in series, control the second forward gear D2, the 4th forward gear D4, the 6th forward gear D6 and the R that reverses gear power combine or interrupt.

Motor-drive pump 30 is valve plate-type volume rotor pumps, or external gear pump, or crescent gear pump, or internal messing cycloid rotor pump.

The DC electromotor with brush of motor 31 to be operating voltages be 8 ~ 32V, or operating voltage is the permanent-magnetic brush-less DC motor of 8 ~ 32V, or operating voltage is the direct current stepping motor of 8 ~ 32V.

First two-way cylinder 11, second two-way cylinder 12, the 3rd two-way cylinder 13 and the 4th two-way cylinder 14 are single pole two-way cylinder.

First unidirectional oil cylinder 26 and the second unidirectional oil cylinder 27 are the annular one-way cylinder with Returnning spring.

First solenoid valve 19, second solenoid valve 20, the 3rd solenoid valve 21, the 4th solenoid valve 22 and the 5th solenoid valve 23 are all switching mode 23 three-way electromagnetic valves, 6th solenoid valve 24 and the 7th solenoid valve 25 are high speed switch type 23 three-way electromagnetic valves driven with pwm signal, and each solenoid valve being all in the 1st respective valve position, being all in the 2nd respective valve position when being energized when power-off; Inter-communicational relationship when first solenoid valve 19, second solenoid valve 20, the 3rd solenoid valve 21, the 4th solenoid valve 22, the 5th solenoid valve 23, the 6th solenoid valve 24 and the 7th solenoid valve 25 are in different valve position is:

Hand control valve 10 is 43 logical Non-follow control guiding valves.

The concrete annexation of 7 fast opposed type dual-clutch transmission electrohydraulic control systems is described as follows:

Working principle of the present invention is as follows:

See Fig. 1, during engine start, hand control valve 10 must be placed in P position or N position; After engine start enters normal idle running, hand control valve 10 is placed in parking gear P position and makes that its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends, fluid before valve in oil pipe 201 to oil pipe after valve 202 fuel feeding, controls to make that each solenoid valve is all in the 1st respective valve position, each oil cylinder is all in respective N position through the filler opening 10P of hand control valve 10 and hydraulic fluid port 10A by transmission electronic control unit TCU.

In electrohydraulic control system of the present invention, forming electric hydaulic source by oil pipe 201 before motor-drive pump 30, motor 31, one-way valve 32, relief valve 33, oil pressure sensor 34, accumulator 35 and valve provides servo and start fluid to system separately;

During electrohydraulic control system work of the present invention, pressure transducer 34 gathers the force value of fluid in oil pipe 201 before valve by its fuel injection pressure signal acquisition port 34P and is delivered to System Electronic Control Unit TCU, when gathered oil pressure value exceed described electrohydraulic control system normally work required oil pressure time, the fluid stored by accumulator 35 by its hydraulic fluid port 35P to oil pipe 201 feed flow before valve, when gathered oil pressure value normally works required minimum oil pressure lower than the described electrohydraulic control system of guarantee, TCU controls motor 31 and starts and drive motor-drive pump 30 to operate, motor-drive pump 30 is through its first hydraulic fluid port 30A, second hydraulic fluid port 29B and the first hydraulic fluid port 29A of filter 29 suck fluid by oil groove 28, and through its second hydraulic fluid port 30B after pressurizeing to the fluid sucked, pressure oil liquid is delivered to oil pipe 201 before valve by the first hydraulic fluid port 32A of one-way valve 32 and the second hydraulic fluid port 32B, before a part enters valve, the pressure oil liquid of oil pipe 201 enters accumulator 35 through the hydraulic fluid port 35P of accumulator 35 and stores, the fluid amount increase that accumulator 35 is stored makes the oil liquid pressure stored by accumulator 35 constantly increase until reach the MTP ensureing system worked well simultaneously, its parking gear P position is at hand control valve 10, reverse gear R position or forward gear D position time, before another part enters valve, the pressure oil liquid of oil pipe 201 is delivered to oil pipe 202 after valve through the filler opening 10P of hand control valve 10 and hydraulic fluid port 10A, when the oil liquid pressure in oil pipe 201 before the valve that pressure transducer 34 gathers reaches the MTP ensureing system worked well, TCU controls motor 31 and quits work, one-way valve 32 conducting when oil pressure higher than its second hydraulic fluid port 32B of the oil pressure of its first hydraulic fluid port 32A, end when oil pressure lower than its second hydraulic fluid port 32B of the oil pressure of its first hydraulic fluid port 32A, its effect is the unlikely backflow of fluid of oil pipe 201 and accumulator 35 before guaranteeing to enter valve when motor-drive pump 30 shuts down and causes energy loss, during the MTP of the oil liquid pressure of relief valve 33 before flow because of oil circuit blocking, the fluid hydraulic power that causes or water hammer etc. cause valve in oil pipe 201 higher than guarantee system worked well, under the effect of relief valve 33 oil pressure therein, its hydraulic fluid port 33A is communicated with its drain tap 33T, oil pipe 201 before valve is made through its hydraulic fluid port 33A and drain tap 33T pressure release, to avoid system to cause system failure.

during reversing,hand control valve 10 keeps off P position by parking and moves to R position of reversing gear and make that its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends, and the fluid before valve in oil pipe 201 enters oil pipe 202 after valve through the filler opening 10P of hand control valve 10 and hydraulic fluid port 10A, 5th solenoid valve 23 energising is in the 2nd valve position, its drain tap 23T ends, filler opening 23P is communicated with hydraulic fluid port 23A, fluid after valve in oil pipe 202 makes it be in the 2nd valve position through the filler opening 23P of the 5th solenoid valve 23 and the control mouth 18X fuel feeding of hydraulic fluid port 23A to the 4th guiding valve 18, first hydraulic fluid port 18A ends the second hydraulic fluid port 18B simultaneously and is communicated with drain tap 18T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 passes through the second hydraulic fluid port 18B and the drain tap 18T draining of the 4th guiding valve 18, then, 4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 through the filler opening 22P of the 4th solenoid valve 22 and hydraulic fluid port 22A to the rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, make the piston of the 4th two-way cylinder 14 move to left position and realize reversing gear the putting into gear of R, afterwards, 4th solenoid valve 22 power-off is in the 1st valve position makes its hydraulic fluid port 22A be communicated with drain tap 22T filler opening 22P cut-off simultaneously, make the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 and rod chamber hydraulic fluid port 14B be in draining state simultaneously, thus make the piston of the 4th two-way cylinder 14 remain on left position to keep reversing gear the state of putting into gear of R, subsequently, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the control mouth 18X of the 4th guiding valve 18 passes through hydraulic fluid port 23A and the drain tap 23T draining of the 5th solenoid valve 23, the 4th guiding valve 18 is made to be in the 1st valve position, its first hydraulic fluid port 18A is communicated with the second hydraulic fluid port 18B drain tap 18T cut-off simultaneously, meanwhile, first solenoid valve 19, second solenoid valve 20 and the 3rd solenoid valve 21 all power-off are in the 1st respective valve position, make the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rod chamber hydraulic fluid port 11B be in draining state, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B to be in draining state, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rod chamber hydraulic fluid port 13B simultaneously and to be in draining state simultaneously simultaneously, thus make the piston of the first two-way cylinder 12, second two-way cylinder 12 and the 3rd two-way cylinder 13 all be in respective meta N, after this, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes the piston of the second unidirectional oil cylinder 27 move to the right position R that realizes reversing gear and keeps off transmission.

when changing to parking gear by the R that reverses gear, hand control valve 10 moves to P position by R position, make its filler opening 10P be communicated with hydraulic fluid port 10A drain tap 10T cut-off simultaneously, and the fluid before valve in oil pipe 201 enters oil pipe 202 after valve through the filler opening 10P of hand control valve 10 and hydraulic fluid port 10A, 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end simultaneously hydraulic fluid port 25A to be communicated with drain tap 25T, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 makes its piston move to left position N by the hydraulic fluid port 25A of the 7th solenoid valve 25 and drain tap 25T draining to interrupt R and keep off transmission, subsequently, 4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 through the filler opening 22P of simultaneously the 4th solenoid valve 22 and hydraulic fluid port 22A to the rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, through filler opening 22P and the hydraulic fluid port 22A of the 4th solenoid valve 22, first hydraulic fluid port 18A of the 4th guiding valve 18 and the second hydraulic fluid port 18B is to the rodless cavity hydraulic fluid port 14A fuel feeding of the 4th two-way cylinder 14, the piston of the 4th two-way cylinder 14 is moved to right, when its piston moves to meta N, 4th solenoid valve 22 power-off is in the 1st valve position makes its filler opening 22P end the drain tap of hydraulic fluid port 22A connection simultaneously 22T, the rod chamber hydraulic fluid port 14B of the 4th two-way cylinder 14 and rodless cavity hydraulic fluid port 14A is in draining state simultaneously thus makes its piston remain on meta N, so far, all solenoid valves, guiding valve and oil cylinder full recovery are to position during each comfortable P gear.

when changing to neutral by the R that reverses gearhand control valve 10 moves to N position by R position makes its filler opening 10P end the drain tap of hydraulic fluid port 10A connection simultaneously 10T, before valve after oil pipe 201 connecting valve the passage of oil pipe 202 be blocked, fluid after valve in oil pipe 202 through the hydraulic fluid port 10A of hand control valve 10 and drain tap 10T to oil groove 28 draining, simultaneously the 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end hydraulic fluid port 25A to be simultaneously communicated with drain tap 25T, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 makes its piston move to left position N by the hydraulic fluid port 25A of the 7th solenoid valve 25 and drain tap 25T draining to interrupt R and keep off transmission; Now, because the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 and hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is all in draining state, the transmission of any gear can not be formed thus achieve neutral.

by neutral change to reverse gear R time, hand control valve 10 moves to R position by N position makes its filler opening 10P be communicated with hydraulic fluid port 10A, and the fluid before valve in oil pipe 201 enters oil pipe 202 after valve through the filler opening 10P of hand control valve 10 and hydraulic fluid port 10A, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes it be in the 2nd valve position through the filler opening 23P of the 5th solenoid valve 23 and the control mouth 18X fuel feeding of hydraulic fluid port 23A to the 4th guiding valve 18, its first hydraulic fluid port 18A ends the second hydraulic fluid port 18B simultaneously and is communicated with drain tap 18T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 passes through the second hydraulic fluid port 18B and the drain tap 18T draining of the 4th guiding valve 18, subsequently, 4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 through the filler opening 22P of the 4th solenoid valve 22 and hydraulic fluid port 22A to the rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, make the piston of the 4th two-way cylinder 14 move to left position and realize reversing gear the putting into gear of R, afterwards, 4th solenoid valve 22 power-off is in the 1st valve position makes the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 and rod chamber hydraulic fluid port 14B be in draining state simultaneously, thus make the piston rest of the 4th two-way cylinder 14 in left position R, after this, 5th solenoid valve 23 power-off is in the 1st valve position and makes its filler opening 23P end simultaneously hydraulic fluid port 23A to be communicated with drain tap 23T, the control mouth 18X of the 4th guiding valve 18 by hydraulic fluid port 23A and the drain tap 23T draining of the 5th solenoid valve 23, make the 4th guiding valve be in the 1st valve position, now, first solenoid valve 19, second solenoid valve 20 and the 3rd solenoid valve 21 all power-off are in the 1st respective valve position, make the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rod chamber hydraulic fluid port 11B be in draining state, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B to be in draining state, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rod chamber hydraulic fluid port 13B simultaneously and to be in draining state simultaneously simultaneously, thus make the piston of the first two-way cylinder 12, second two-way cylinder 12 and the 3rd two-way cylinder 13 all be in respective meta N, after this, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes the piston of the second unidirectional oil cylinder 27 move to the right position R that realizes reversing gear and keeps off transmission.

when vehicle advances with the starting of D1 gear, hand control valve 10 by N position move to D position makes its filler opening 10P be communicated with hydraulic fluid port 10A simultaneously drain tap 10T end, the fluid before valve in oil pipe 201 enters oil pipe 202 after valve through the filler opening 10P of hand control valve 10 and hydraulic fluid port 10A, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the control mouth 15X of the first guiding valve 15, by the hydraulic fluid port 23A of the 5th solenoid valve 23 and drain tap 23T draining, makes that the first guiding valve 15 is in the 1st valve position, its drain tap 15T ends the first hydraulic fluid port 15A simultaneously and is communicated with the second hydraulic fluid port 15B, first solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of filler opening 19P connection simultaneously 19A, fluid after valve in oil pipe 202 through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, simultaneously, fluid after valve in oil pipe 202 is through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A, first hydraulic fluid port 15A of the first guiding valve 15 and the second hydraulic fluid port 15B is to the rodless cavity hydraulic fluid port 11A fuel feeding of the first two-way cylinder 11, thus make the piston of the first two-way cylinder 11 move to right position, the gear realizing forward gear D1 is preset, after this, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 24A, fluid after valve in oil pipe 202 makes its piston move to right position through the filler opening 24P of the 6th solenoid valve 24 and the hydraulic fluid port 26A fuel feeding of hydraulic fluid port 24A to the first unidirectional oil cylinder 26, realizes the transmission of D1 gear, completes the starting of vehicle forward gear.

when changing to neutral by D1 gearhand control valve 10 moves to N position by D position makes its filler opening 10P end the drain tap of hydraulic fluid port 10A connection simultaneously 10T, before valve after oil pipe 201 connecting valve the passage of oil pipe 202 be blocked, fluid after valve in oil pipe 202 through the hydraulic fluid port 10A of hand control valve 10 and drain tap 10T to oil groove 28 draining, simultaneously the 6th solenoid valve 24 power-off is in the 1st valve position and makes its filler opening 24P end hydraulic fluid port 24A to be simultaneously communicated with drain tap 24T, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 makes its piston move to left position N by the hydraulic fluid port 24A of the 6th solenoid valve 24 and drain tap 24T draining to interrupt D1 and keep off transmission; Now, because the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 and hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is all in draining state, the transmission of any gear can not be formed thus achieve neutral.

when changing to D2 gear by D1 gear5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 16X fuel feeding of hydraulic fluid port 23A to the second guiding valve 16 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 16A ends the second hydraulic fluid port 16B simultaneously and is communicated with drain tap 16T, and the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 passes through the second hydraulic fluid port 16B and the drain tap 16T draining of the second guiding valve 16; Subsequently, second solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 through the filler opening 20P of the second solenoid valve 20 and hydraulic fluid port 20A to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, make the piston of the second two-way cylinder 12 move to left position, the gear realizing D2 gear is preset; Then, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, makes the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B be in draining state simultaneously thus make its piston remain on left position D2 to keep off; Afterwards, 6th solenoid valve 24 power-off is in the 1st valve position its filler opening 24P is ended hydraulic fluid port 26A that simultaneously T hydraulic fluid port 24A is communicated with the unidirectional oil cylinder 26 of drain tap 24, first and is made its piston move to left position N by the hydraulic fluid port 24A of the 6th solenoid valve 24 and drain tap 24T draining, interrupted forward gear D1 transmission; After this, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes its piston move to right position thus realizes forward gear D2 transmission; finally, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes it be in the 2nd valve position through the filler opening 23P of the 5th solenoid valve 23 and the control mouth 15X fuel feeding of hydraulic fluid port 23A to the first guiding valve 15, its first hydraulic fluid port 15A cut-off simultaneously the second hydraulic fluid port 15B is communicated with drain tap 15T, the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 passes through the second hydraulic fluid port 15B and the drain tap 15T draining of the first guiding valve 15, first solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of filler opening 19P connection simultaneously 19A, fluid after valve in oil pipe 202 through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, when making the piston of the first two-way cylinder 11 move to meta N, first solenoid valve 19 power-off is in the 1st valve position makes its filler opening 19P end the drain tap of hydraulic fluid port 19A connection simultaneously 19T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rod chamber hydraulic fluid port 11B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D1 gear by D2 gearfirst solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of filler opening 19P connection simultaneously 19A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 15A of the filler opening 19P of the first solenoid valve 19 and the rod chamber hydraulic fluid port 11B fuel feeding of hydraulic fluid port 19A to the first two-way cylinder 11, the filler opening 19P through the first solenoid valve 19 and hydraulic fluid port 19A, the first guiding valve 15 and the second hydraulic fluid port 15B to the rodless cavity hydraulic fluid port 11A fuel feeding of the first two-way cylinder 11, making the piston of the first two-way cylinder move to right position, to realize the gearshift of D1 gear preset, subsequently, the first solenoid valve 19 power-off is in the 1st valve position makes its filler opening 19P end the drain tap of hydraulic fluid port 19A connection simultaneously 19T, and the rod chamber hydraulic fluid port 11B of the first two-way cylinder 11 and rodless cavity hydraulic fluid port 11A is in draining state simultaneously makes its piston rest keep off in right position D1, afterwards, 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end simultaneously hydraulic fluid port 25A to be communicated with drain tap 25T, the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 by hydraulic fluid port 25A and the drain tap 25T draining of the 7th solenoid valve 25, make its piston move to left position N to interrupt forward gear D2 transmission, after this, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 through the filler opening 24P of the 6th solenoid valve 24 and hydraulic fluid port 24A, makes its piston move to right position thus realizes forward gear D1 transmission, finally, second solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 simultaneously through the filler opening 20P of the second solenoid valve 20 and hydraulic fluid port 20A to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, through filler opening 20P and the hydraulic fluid port 20A of the second solenoid valve 20, first hydraulic fluid port 16A of the second guiding valve 16 and the second hydraulic fluid port 16B is to the rodless cavity hydraulic fluid port 12A fuel feeding of the second two-way cylinder 12, when making the piston of the second two-way cylinder move to meta N, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, make the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B be in draining state simultaneously, make its piston rest in meta N.

when changing to D3 gear by D2 gear5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 15X fuel feeding of hydraulic fluid port 23A to the first guiding valve 15 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 15A ends the second hydraulic fluid port 15B simultaneously and is communicated with drain tap 15T, and the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 passes through the second hydraulic fluid port 15B and the drain tap 15T draining of the first guiding valve 15, subsequently, first solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of filler opening 19P connection simultaneously 19A, fluid after valve in oil pipe 202 through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, make the piston of the first two-way cylinder 11 move to left position D3, the gear realizing D3 gear is preset, then, first solenoid valve 19 power-off is in the 1st valve position makes its filler opening 19P end the drain tap of hydraulic fluid port 19A connection simultaneously 19T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, makes the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rod chamber hydraulic fluid port 11B be in draining state simultaneously thus makes its piston rest in left position D3, afterwards, 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end simultaneously hydraulic fluid port 25A to be communicated with drain tap 25T, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is made its piston move to left position N by the hydraulic fluid port 25A of the 7th solenoid valve 25 and drain tap 25T draining, interrupted forward gear D2 transmission, after this, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 24A, fluid after valve in oil pipe 202 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 through the filler opening 24P of the 6th solenoid valve 24 and hydraulic fluid port 24A, makes its piston move to right position thus realizes forward gear D3 transmission, finally, second solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 simultaneously through the filler opening 20P of the second solenoid valve 20 and hydraulic fluid port 20A to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, through filler opening 20P and the hydraulic fluid port 20A of the second solenoid valve 20, first hydraulic fluid port 16A of the second guiding valve 16 and the second hydraulic fluid port 16B is to the rodless cavity hydraulic fluid port 12A fuel feeding of the second two-way cylinder 12, when making the piston of the second two-way cylinder 12 move to meta N, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D2 gear by D3 gear5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 16X fuel feeding of hydraulic fluid port 23A to the second guiding valve 16 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 16A ends the second hydraulic fluid port 16B simultaneously and is communicated with drain tap 16T, and the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 passes through the second hydraulic fluid port 16B and the drain tap 16T draining of the second guiding valve 16, subsequently, second solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 through the filler opening 20P of the second solenoid valve 20 and hydraulic fluid port 20A to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, make the piston of the second two-way cylinder 12 move to left position, the gear realizing D2 gear is preset, then, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, makes the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B be in draining state simultaneously thus makes its piston rest in left position D2, afterwards, 6th solenoid valve 24 power-off is in the 1st valve position and makes its filler opening 24P end simultaneously hydraulic fluid port 24A to be communicated with drain tap 24T, the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 by hydraulic fluid port 24A and the drain tap 24T draining of the 6th solenoid valve 24, make its piston move to left position N to interrupt forward gear D3 transmission, after this, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes its piston move to right position thus realizes forward gear D2 transmission, finally, first solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of oil inlet P connection simultaneously A, fluid after valve in oil pipe 202 simultaneously through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, through filler opening 19P and the hydraulic fluid port 19A of the first solenoid valve 19, first hydraulic fluid port A of the first guiding valve 15 and the second hydraulic fluid port B is to the rodless cavity hydraulic fluid port 11A fuel feeding of the first two-way cylinder 11, when making the piston of the first two-way cylinder 11 move to meta N, first solenoid valve 19 power-off is in the 1st valve position makes its filler opening 19P end the drain tap of hydraulic fluid port 19A connection simultaneously 19T, the rod chamber hydraulic fluid port 11B of the first two-way cylinder 11 and rodless cavity hydraulic fluid port 11A is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D4 gear by D3 gearsecond solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 16A of the filler opening 20P of the second solenoid valve 20 and the rod chamber hydraulic fluid port 12B fuel feeding of hydraulic fluid port 20A to the second two-way cylinder 12, the filler opening 20P through the second solenoid valve 20 and hydraulic fluid port A, the second guiding valve 16 and the second hydraulic fluid port 16B to the rodless cavity hydraulic fluid port 12A fuel feeding of the second two-way cylinder 12, make the piston of the second two-way cylinder 12 move to right position D4, the gear realizing D4 gear is preset, subsequently, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, makes the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rodless cavity hydraulic fluid port 12B be in draining state simultaneously thus makes its piston rest in right position D4, then, 6th solenoid valve 24 power-off is in the 1st valve position and makes its filler opening 24P end simultaneously hydraulic fluid port 24A to be communicated with drain tap 24T, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 makes its piston move to left position by the hydraulic fluid port 24A of the 6th solenoid valve 24 and drain tap 24T draining to interrupt forward gear D3 transmission, afterwards, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes its piston move to right position thus realizes forward gear D4 transmission, finally, first solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of filler opening 19P connection simultaneously 19A, fluid after valve in oil pipe 202 simultaneously through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, through filler opening 19P and the hydraulic fluid port 19A of the first solenoid valve 19, first hydraulic fluid port 15A of the first guiding valve 15 and the second hydraulic fluid port 15B is to the rodless cavity hydraulic fluid port 11A fuel feeding of the first two-way cylinder 11, when making the piston of the first two-way cylinder 11 move to meta N, first solenoid valve 19 power-off is in the 1st valve position makes its filler opening 19P end the drain tap of hydraulic fluid port 19A connection simultaneously 19T, the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rodless cavity hydraulic fluid port 11B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D3 gear by D4 gear5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 15X fuel feeding of hydraulic fluid port 23A to the first guiding valve 15 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 15A ends the second hydraulic fluid port 15B simultaneously and is communicated with drain tap 15T, and the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 passes through the second hydraulic fluid port 15B and the drain tap 15T draining of the first guiding valve 15; Subsequently, first solenoid valve 19 energising is in the 2nd valve position makes its drain tap 19T end the hydraulic fluid port of filler opening 19P connection simultaneously 19A, fluid after valve in oil pipe 202 through the filler opening 19P of the first solenoid valve 19 and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, make the piston of the first two-way cylinder 11 move to left position D3, the gear realizing D3 gear is preset; Then, first solenoid valve 19 power-off is in the 1st valve position makes its filler opening 19P end the drain tap of hydraulic fluid port 19A connection simultaneously 19T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, makes the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rodless cavity hydraulic fluid port 11B be in draining state simultaneously thus makes its piston rest in left position D3; Afterwards, 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end simultaneously hydraulic fluid port 25A to be communicated with drain tap 25T, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 makes its piston move to left position by the hydraulic fluid port 25A of the 7th solenoid valve 25 and drain tap 25T draining to interrupt forward gear D4 transmission; After this, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 24A, fluid after valve in oil pipe 202 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 through the filler opening 24P of the 6th solenoid valve 24 and hydraulic fluid port 24A, makes its piston move to right position thus realizes forward gear D3 transmission; finally, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes it be in the 2nd valve position through the filler opening 23P of the 5th solenoid valve 23 and the control mouth 16X fuel feeding of hydraulic fluid port 23A to the second guiding valve 16, its first hydraulic fluid port 16A ends the second hydraulic fluid port 16B simultaneously and is communicated with drain tap 16T, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 passes through the second hydraulic fluid port 16B and the drain tap 16T draining of the second guiding valve 16, second solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 through the filler opening 20P of the second solenoid valve 20 and hydraulic fluid port 20A to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, when making the piston of the second two-way cylinder 12 move to meta N, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rodless cavity hydraulic fluid port 12B is made to be in draining state simultaneously thus to make its piston rest in N position.

when changing to D5 gear by D4 gear3rd solenoid valve 21 energising is in the 2nd valve position makes its drain tap 21T end the hydraulic fluid port of filler opening 21P connection simultaneously 21A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 17A of the filler opening 21P of the 3rd solenoid valve 21 and the rod chamber hydraulic fluid port 13B fuel feeding of hydraulic fluid port 21A to the 3rd two-way cylinder 13, the filler opening 21P through the 3rd solenoid valve 21 and hydraulic fluid port 21A, the 3rd guiding valve 17 and the second hydraulic fluid port 17B to the rodless cavity hydraulic fluid port 13A fuel feeding of the 3rd two-way cylinder 13, make the piston of the 3rd two-way cylinder 13 move to right position D5, the gear realizing D5 gear is preset, subsequently, the 3rd solenoid valve 21 power-off is in the 1st valve position makes its filler opening 21P end the drain tap of hydraulic fluid port 21A connection simultaneously 21T, makes the rodless cavity hydraulic fluid port A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port B be in draining state simultaneously thus make its piston rest in right position, then, 7th solenoid valve 25 power-off be in the 1st valve position, oil inlet P cut-off simultaneously hydraulic fluid port A be communicated with drain tap T, the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 by hydraulic fluid port 25A and the drain tap 25T draining of the 7th solenoid valve 25, make its piston move to left position N to interrupt forward gear D4 transmission, afterwards, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 24A, fluid after valve in oil pipe 202 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 through the filler opening 24P of the 6th solenoid valve 24 and hydraulic fluid port 24A, makes its piston move to right position thus realizes forward gear D5 transmission, after this, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 16X fuel feeding of hydraulic fluid port 23A to the second guiding valve 16 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 16A ends the second hydraulic fluid port 16B simultaneously and is communicated with drain tap 16T, and the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 passes through the second hydraulic fluid port 16B and the drain tap 16T draining of the second guiding valve 16, finally, second solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 through the filler opening 20P of the second solenoid valve 20 and hydraulic fluid port 20A to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, when making the piston of the second two-way cylinder 12 move to middle N, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port A of the second two-way cylinder 12 and rodless cavity hydraulic fluid port B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D4 gear by D5 gearsecond solenoid valve 20 energising is in the 2nd valve position makes its drain tap 20T end the hydraulic fluid port of filler opening 20P connection simultaneously 20A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 16A of the filler opening 20P of the second solenoid valve 20 and the rod chamber hydraulic fluid port 12B fuel feeding of hydraulic fluid port 20A to the second two-way cylinder 12, the filler opening 20P through the second solenoid valve 20 and hydraulic fluid port 20A, the second guiding valve 16 and the second hydraulic fluid port 16B to the rodless cavity hydraulic fluid port 12A fuel feeding of the second two-way cylinder 12, make the piston of the second two-way cylinder 12 move to right position D4, the gear realizing D4 gear is preset, subsequently, second solenoid valve 20 power-off is in the 1st valve position makes its filler opening 20P end the drain tap of hydraulic fluid port 20A connection simultaneously 20T, makes the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rodless cavity hydraulic fluid port 12B be in draining state simultaneously thus make its piston rest in right position, then, 6th solenoid valve 24 power-off is in the 1st valve position and makes its filler opening 24P end simultaneously hydraulic fluid port 24A to be communicated with drain tap 24T, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 makes its piston move to left position by the hydraulic fluid port 24A of the 6th solenoid valve 24 and drain tap 24T draining to interrupt forward gear D5 transmission, afterwards, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes its piston move to right position thus realizes forward gear D4 transmission, after this, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 17X fuel feeding of hydraulic fluid port 23A to the 3rd guiding valve 17 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 17A ends the second hydraulic fluid port 17B simultaneously and is communicated with drain tap 17T, and the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 passes through the second hydraulic fluid port 17B and the drain tap 17T draining of the 3rd guiding valve 17, finally, 3rd solenoid valve 21 energising is in the 2nd valve position makes its drain tap 21T end the hydraulic fluid port of filler opening 21P connection simultaneously 21A, fluid after valve in oil pipe 202 through the filler opening 21P of the 3rd solenoid valve 21 and hydraulic fluid port 21A to the rod chamber hydraulic fluid port 13B fuel feeding of the 3rd two-way cylinder 13, when making the piston of the 3rd two-way cylinder 13 move to meta N, 3rd solenoid valve 21 power-off is in the 1st valve position makes its filler opening 21P end the drain tap of hydraulic fluid port 21A connection simultaneously 21T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port 13B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D6 gear by D5 gear4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 18A of the filler opening 22P of the 4th solenoid valve 22 and the rod chamber hydraulic fluid port 14B fuel feeding of hydraulic fluid port 22A to the 4th two-way cylinder 14, the filler opening 22P through the 4th solenoid valve 22 and hydraulic fluid port 22A, the 4th guiding valve 18 and the second hydraulic fluid port 18B to the rodless cavity hydraulic fluid port 14A fuel feeding of the 4th two-way cylinder 14, make the piston of the 4th two-way cylinder 12 move to right position D6, the gear realizing D6 gear is preset, subsequently, 4th solenoid valve 22 power-off is in the 1st valve position makes its filler opening 22P end the drain tap of hydraulic fluid port 22A connection simultaneously 22T, makes the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 and rodless cavity hydraulic fluid port 14B be in draining state simultaneously thus makes its piston rest in right position D6, then, 6th solenoid valve 24 power-off is in the 1st valve position and makes its filler opening 24P end simultaneously hydraulic fluid port 24A to be communicated with drain tap 24T, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 makes its piston move to left position by the hydraulic fluid port 24A of the 6th solenoid valve 24 and drain tap 24T draining to interrupt forward gear D5 transmission, afterwards, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes its piston move to right position thus realizes forward gear D6 transmission, after this, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 17X fuel feeding of hydraulic fluid port 23A to the 3rd guiding valve 17 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 17A ends the second hydraulic fluid port 17B simultaneously and is communicated with drain tap 17T, and the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 passes through the second hydraulic fluid port 17B and the drain tap 17T draining of the 3rd guiding valve 17, finally, 3rd solenoid valve 21 energising is in the 2nd valve position makes its drain tap 21T end the hydraulic fluid port of filler opening 21P connection simultaneously 21A, fluid after valve in oil pipe 202 through the filler opening 21P of the 3rd solenoid valve 21 and hydraulic fluid port 21A to the rod chamber hydraulic fluid port 13B fuel feeding of the 3rd two-way cylinder 13, when making the piston of the 3rd two-way cylinder 13 move to meta N, 3rd solenoid valve 21 power-off is in the 1st valve position makes its filler opening 21P end the drain tap of hydraulic fluid port 21A connection simultaneously 21T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port 13B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D5 gear by D6 gear3rd solenoid valve 21 energising is in the 2nd valve position makes its drain tap 21T end the hydraulic fluid port of filler opening 21P connection simultaneously 21A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 17A of the filler opening 21P of the 3rd solenoid valve 21 and the rod chamber hydraulic fluid port 13B fuel feeding of hydraulic fluid port 21A to the 3rd two-way cylinder 13, the filler opening 21P through the 3rd solenoid valve 21 and hydraulic fluid port 21A, the 3rd guiding valve 17 and the second hydraulic fluid port 17B to the rodless cavity hydraulic fluid port 13A fuel feeding of the 3rd two-way cylinder 13, make the piston of the 3rd two-way cylinder 13 move to right position D5, the gear realizing D5 gear is preset, subsequently, 3rd solenoid valve 21 power-off is in the 1st valve position makes its filler opening 21P end the drain tap of hydraulic fluid port 21A connection simultaneously 21T, makes the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port 13B be in draining state simultaneously thus makes its piston rest in right position D5, then, 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end simultaneously hydraulic fluid port 25A to be communicated with drain tap 25T, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is made its piston move to left position N by the hydraulic fluid port 25A of the 7th solenoid valve 25 and drain tap 25T draining, interrupted forward gear D6 transmission, afterwards, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 24A, fluid after valve in oil pipe 202 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 through the filler opening 24P of the 6th solenoid valve 24 and hydraulic fluid port 24A, makes its piston move to right position thus realizes forward gear D5 transmission, after this, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 18X fuel feeding of hydraulic fluid port 23A to the 4th guiding valve 18 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 18A ends the second hydraulic fluid port 18B simultaneously and is communicated with drain tap 18T, and the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 passes through the second hydraulic fluid port 18B and the drain tap 18T draining of the 4th guiding valve 18, finally, 4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 through the filler opening 22P of the 4th solenoid valve 22 and hydraulic fluid port 22A to the rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, when making the piston of the 4th two-way cylinder 14 move to meta N, 4th solenoid valve 22 power-off is in the 1st valve position makes its filler opening 22P end the drain tap of hydraulic fluid port 22A connection simultaneously 22T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 and rodless cavity hydraulic fluid port 14B is made to be in draining state simultaneously thus to make its piston rest in N position.

when changing to D7 gear by D6 gear5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes through filler opening 23P and the control mouth 17X fuel feeding of hydraulic fluid port 23A to the 3rd guiding valve 17 of the 5th solenoid valve 23 that it is in the 2nd valve position, its first hydraulic fluid port 17A ends the second hydraulic fluid port 17B simultaneously and is communicated with drain tap 17T, and the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 passes through the second hydraulic fluid port 17B and the drain tap 17T draining of the 3rd guiding valve 17; Subsequently, 3rd solenoid valve 21 energising is in the 2nd valve position makes its drain tap 21T end the hydraulic fluid port of filler opening 21P connection simultaneously 21A, fluid after valve in oil pipe 202 through the filler opening 21P of the 3rd solenoid valve 21 and hydraulic fluid port 21A to the rod chamber hydraulic fluid port 13B fuel feeding of the 3rd two-way cylinder 13, make the piston of the 3rd two-way cylinder 13 move to left position D7, the gear realizing D7 gear is preset; Then, 3rd solenoid valve 21 power-off is in the 1st valve position makes its filler opening 21P end the drain tap of hydraulic fluid port 21A connection simultaneously 21T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, makes the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port 13B be in draining state simultaneously thus makes its piston rest in left position D7; Afterwards, 7th solenoid valve 25 power-off is in the 1st valve position and makes its filler opening 25P end simultaneously hydraulic fluid port 25A to be communicated with drain tap 25T, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is made its piston move to left position N by the hydraulic fluid port 25A of the 7th solenoid valve 25 and drain tap 25T draining, interrupted forward gear D6 transmission; After this, 6th solenoid valve 24 energising is in the 2nd valve position makes its drain tap 24T end the hydraulic fluid port of filler opening 24P connection simultaneously 24A, fluid after valve in oil pipe 202 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 through the filler opening 24P of the 6th solenoid valve 24 and hydraulic fluid port 24A, makes its piston move to right position thus realizes forward gear D7 transmission; finally, 5th solenoid valve 23 energising is in the 2nd valve position makes its drain tap 23T end the hydraulic fluid port of filler opening 23P connection simultaneously 23A, fluid after valve in oil pipe 202 makes it be in the 2nd valve position through the filler opening 23P of the 5th solenoid valve 23 and the control mouth 18X fuel feeding of hydraulic fluid port 23A to the 4th guiding valve 18, its hydraulic fluid port 18A ends hydraulic fluid port 18B simultaneously and is communicated with drain tap 18T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 passes through hydraulic fluid port 18B and the drain tap 18T draining of the 4th guiding valve 18,4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 through the filler opening 22P of the 4th solenoid valve 22 and hydraulic fluid port 22A to the rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, when making the piston of the 4th two-way cylinder 14 move to meta N, 4th solenoid valve 22 power-off is in the 1st valve position makes its filler opening 22P end the drain tap of hydraulic fluid port 22A connection simultaneously 22T, 5th solenoid valve 23 power-off is in the 1st valve position makes its filler opening 23P end the drain tap of hydraulic fluid port 23A connection simultaneously 23T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 and rodless cavity hydraulic fluid port 14B is made to be in draining state simultaneously thus to make its piston rest in meta N.

when changing to D6 gear by D7 gear4th solenoid valve 22 energising is in the 2nd valve position makes its drain tap 22T end the hydraulic fluid port of filler opening 22P connection simultaneously 22A, fluid after valve in oil pipe 202 simultaneously through the first hydraulic fluid port 18A of the filler opening 22P of the 4th solenoid valve 22 and the rod chamber hydraulic fluid port 14B fuel feeding of hydraulic fluid port 22A to the 4th two-way cylinder 14, the filler opening 22P through the 4th solenoid valve 22 and hydraulic fluid port 22A, the 4th guiding valve 18 and the second hydraulic fluid port 18B to the rodless cavity hydraulic fluid port 14A fuel feeding of the 4th two-way cylinder 14, make the piston of the 4th two-way cylinder 14 move to right position D6, the gear realizing D6 gear is preset, subsequently, 4th solenoid valve 22 power-off is in the 1st valve position makes its filler opening 22P end the drain tap of hydraulic fluid port 22A connection simultaneously 22T, makes the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 and rodless cavity hydraulic fluid port 14B be in draining state simultaneously thus makes its piston rest in right position D6, then, 6th solenoid valve 24 power-off is in the 1st valve position and makes its filler opening 24P end simultaneously hydraulic fluid port 24A to be communicated with drain tap 24T, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 makes its piston move to left position N by the hydraulic fluid port 24A of the 6th solenoid valve 24 and drain tap 24T draining to interrupt forward gear D7 transmission, afterwards, 7th solenoid valve 25 energising is in the 2nd valve position makes its drain tap 25T end the hydraulic fluid port of filler opening 25P connection simultaneously 25A, fluid after valve in oil pipe 202 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27 through the filler opening 25P of the 7th solenoid valve 25 and hydraulic fluid port 25A, makes its piston move to right position thus realizes forward gear D6 transmission, after this, 3rd solenoid valve 21 energising is in the 2nd valve position makes its drain tap 21T end the hydraulic fluid port of filler opening 21P connection simultaneously 21A, fluid after valve in oil pipe 202 simultaneously through the filler opening 21P of the 3rd solenoid valve 21 and hydraulic fluid port 21A to the rod chamber hydraulic fluid port 13B fuel feeding of the 3rd two-way cylinder 13, through filler opening 21P and the hydraulic fluid port 21A of the 3rd solenoid valve 21, first hydraulic fluid port 17A of the 3rd guiding valve 17 and the second hydraulic fluid port 17B is to the rodless cavity hydraulic fluid port 12A fuel feeding of the 3rd two-way cylinder 13, when making the piston of the 3rd two-way cylinder 13 move to meta N, 3rd solenoid valve 21 power-off is in the 1st valve position makes its filler opening 21P end the drain tap of hydraulic fluid port 21A connection simultaneously 21T, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port 13B is made to be in draining state simultaneously thus to make its piston rest in N position.

Claims

1. 7 fast opposed type dual-clutch transmission electrohydraulic control systems, is characterized in that:

Comprise motor-drive pump (30), motor (31), one-way valve (32), relief valve (33), accumulator (35), hand control valve (10), the first shift control unit, the second shift control unit, the 3rd shift control unit, the 4th shift control unit, first clutch control unit, second clutch control unit and the 5th solenoid valve (23);

Described first shift control unit is connected and composed successively by the first two-way cylinder (11), the first guiding valve (15) and the first solenoid valve (19), controls putting into gear or moving back shelves of the first forward gear D1 and the 3rd forward gear D3; Second shift control unit is connected and composed successively by the second two-way cylinder (12), the second guiding valve (16) and the second solenoid valve (20), controls putting into gear or moving back shelves of the second forward gear D2 and the 4th forward gear D4; 3rd shift control unit is connected and composed successively by the 3rd two-way cylinder (13), the 3rd guiding valve (17) and the 3rd solenoid valve (21), controls putting into gear or moving back shelves of the 7th forward gear D7 and the 5th forward gear D5; 4th shift control unit is connected and composed successively by the 4th two-way cylinder (14), the 4th guiding valve (18) and the 4th solenoid valve (22), controls to reverse gear the putting into gear or moving back shelves of R and the 6th forward gear D6;

Described first clutch control unit by the first unidirectional oil cylinder (26) and the 6th solenoid valve (24) in series, control the first forward gear D1, the 3rd forward gear D3, the 5th forward gear D5 and the 7th forward gear D7 power combine or interrupt; Described second clutch control unit by the second unidirectional oil cylinder (27) and the 7th solenoid valve (25) in series, control the second forward gear D2, the 4th forward gear D4, the 6th forward gear D6 and the R that reverses gear power combine or interrupt;

2. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 1, is characterized in that:

The hydraulic fluid port 11A of the rodless cavity of described first two-way cylinder (11) is communicated with the second hydraulic fluid port 15B of the first guiding valve (15), the hydraulic fluid port 11B of rod chamber is communicated with the first hydraulic fluid port 15A of the first guiding valve (15) simultaneously and the hydraulic fluid port 19A of the first solenoid valve (19); The drain tap 15T of described first guiding valve (15) is communicated with oil groove (28), control port 15X and is communicated with the first hydraulic fluid port 23A of the 5th solenoid valve (23); After the filler opening 19P of described first solenoid valve (19) is communicated with valve, oil pipe (202), drain tap 19T are communicated with oil groove (28); After the filler opening 23P of described 5th solenoid valve (23) is communicated with valve, oil pipe (202), drain tap 23T are communicated with oil groove (28); When to the rodless cavity of the first two-way cylinder (11) and rod chamber simultaneously fuel feeding time make its piston move to right position to realize the gear of forward gear D1 preset, when the rodless cavity draining of the first two-way cylinder (11), simultaneously to its rod chamber fuel feeding time, making its piston move to left position, to realize the gear of forward gear D3 preset, when rodless cavity and the rod chamber of the first two-way cylinder (11) while during draining, make its piston rest in present position, realize neutral N when the piston of the first two-way cylinder (11) moves to neutral position;

The hydraulic fluid port 12A of the rodless cavity of described second two-way cylinder (12) is communicated with the second hydraulic fluid port 16B of the second guiding valve (16), the hydraulic fluid port 12B of rod chamber is communicated with the first hydraulic fluid port 16A of the second guiding valve (16) simultaneously and the hydraulic fluid port 20A of the second solenoid valve (20); The drain tap 16T of described second guiding valve (16) is communicated with oil groove (28), control port 16X and is communicated with the hydraulic fluid port 23A of the 5th solenoid valve (23); After the filler opening 20P of described second solenoid valve (20) is communicated with valve, oil pipe (202), drain tap 20T are communicated with oil groove (28); When to the rodless cavity of the second two-way cylinder (12) and rod chamber simultaneously fuel feeding time, making its piston move to right position, to realize the gear of forward gear D4 preset, when the rodless cavity draining of the second two-way cylinder (12), simultaneously to its rod chamber fuel feeding time, making its piston move to left position, to realize the gear of forward gear D2 preset, when rodless cavity and the rod chamber of the second two-way cylinder (12) while during draining, make its piston rest in present position, realize neutral N when the piston of the second two-way cylinder (12) moves to neutral position;

The hydraulic fluid port 13A of the rodless cavity of described 3rd two-way cylinder (13) is communicated with the second hydraulic fluid port 17B of the 3rd guiding valve (17), the hydraulic fluid port 13B of rod chamber and is communicated with the first hydraulic fluid port 17A of the 3rd guiding valve (17) and the hydraulic fluid port 21A of the 3rd solenoid valve (21) simultaneously; The drain tap 17T of described 3rd guiding valve (17) is communicated with oil groove (28), control port 17X and is communicated with the hydraulic fluid port 23A of the 5th solenoid valve (23); After the filler opening 21P of described 3rd solenoid valve (21) is communicated with valve, oil pipe (202), drain tap 20T are communicated with oil groove (28); When to the rodless cavity of the 3rd two-way cylinder (13) and rod chamber simultaneously fuel feeding time, making its piston move to right position, to realize the gear of forward gear D5 preset, when the rodless cavity draining of the 3rd two-way cylinder (13), simultaneously to its rod chamber fuel feeding time, making its piston move to left position, to realize the gear of forward gear D7 preset, when rodless cavity and the rod chamber of the 3rd two-way cylinder (13) while during draining, make its piston rest in present position, realize neutral N when the piston of the 3rd two-way cylinder (13) moves to neutral position;

The hydraulic fluid port 14A of the rodless cavity of described 4th two-way cylinder (14) is communicated with the second hydraulic fluid port 18B of the 4th guiding valve (18), the hydraulic fluid port 14B of rod chamber and is communicated with the first hydraulic fluid port 17A of the 4th guiding valve (18) and the hydraulic fluid port 22A of the 4th solenoid valve (22) simultaneously; The drain tap 18T of described 4th guiding valve (18) is communicated with oil groove (28), control port 18X and is communicated with the hydraulic fluid port 23A of the 5th solenoid valve (23); Described 4th solenoid valve (2 2)filler opening 22P be communicated with valve after oil pipe (202), drain tap 20T be communicated with oil groove (28); When to the rodless cavity of the 4th two-way cylinder (14) and rod chamber simultaneously fuel feeding time, making its piston move to right position, to realize the gear of forward gear D6 preset, when the rodless cavity draining of the 4th two-way cylinder (14), simultaneously to its rod chamber fuel feeding time, its piston is made to move to left position realize the reversing gear gear of R preset, when rodless cavity and the rod chamber of the 4th two-way cylinder (14) while during draining, make its piston rest in present position, realize neutral N when the piston of the 4th two-way cylinder (14) moves to neutral position;

The hydraulic fluid port 26A of described first unidirectional oil cylinder (26) is communicated with the hydraulic fluid port 24A of the 6th solenoid valve (24); After the filler opening 24P of described 6th solenoid valve (24) is communicated with valve, oil pipe (202), drain tap 24T are communicated with oil groove (28); During to the first unidirectional oil cylinder (26) fuel feeding, its piston is moved to transmission that right position realizes a certain gear in forward gear D1, D3, D5, D7, during the first unidirectional oil cylinder (26) draining, its piston is made to be displaced downwardly in action of reset spring the transmission that a certain gear in forward gear D1, D3, D5, D7 is interrupted in left position;

The hydraulic fluid port 27A of described second unidirectional oil cylinder (27) is communicated with the hydraulic fluid port 25A of the 7th solenoid valve (25); After the filler opening 25P of described 7th solenoid valve (25) is communicated with valve, oil pipe (202), drain tap 25T are communicated with oil groove (28); During to the second unidirectional oil cylinder (27) fuel feeding, make its piston move to right position to realize reversing gear the transmission of a certain gear in R or forward gear D2, D4, D6, during the second unidirectional oil cylinder (27) draining, make its piston be displaced downwardly to left position in action of reset spring and to interrupt reversing gear the transmission of a certain gear in R or forward gear D2, D4, D6;

Described motor-drive pump (30) and motor (31) are in transmission connection by motor shaft (EMZ), and the first hydraulic fluid port 30A of motor-drive pump (30) connects filter (29), and the first hydraulic fluid port 29A of filter (29) is communicated with oil groove (28); Second hydraulic fluid port 30B of motor-drive pump (30) is communicated with the first hydraulic fluid port 32A of one-way valve (32), and the second hydraulic fluid port 32B of one-way valve (32) connects the filler opening 10P of the first hydraulic fluid port 33A, the hydraulic fluid port 34P of oil pressure sensor (34) of relief valve (33), the hydraulic fluid port 35P of accumulator (35) and hand control valve (10) by oil pipe (201) before valve simultaneously; One-way valve (32) conducting when the pressure at the first hydraulic fluid port 32A place of one-way valve (32) is greater than its second hydraulic fluid port 32B, one-way valve (32) cut-off when the pressure at the first hydraulic fluid port 32A place of one-way valve (32) is less than its second hydraulic fluid port 32B; When the oil pressure at the first hydraulic fluid port 33A place of relief valve (33) exceedes the oil pressure maximum value of setting, its first hydraulic fluid port 33A is communicated with the second hydraulic fluid port 33B, fluid before valve in oil pipe (201) through relief valve (33) the first hydraulic fluid port 33A and the second hydraulic fluid port 33B flow to oil groove (28), the oil pressure before valve in oil pipe (201) is reduced, when the oil pressure at the first hydraulic fluid port 33A place of relief valve (33) is less than or equal to the oil pressure maximum value of setting, its first hydraulic fluid port 33A, the second hydraulic fluid port 33B end simultaneously; When in oil pipe before valve (201), oil pressure is lower than system Minimum operating pressure, motor (31) works, and when in oil pipe before valve (201), oil pressure is higher than system Maximum operating pressure, motor (31) quits work; Described accumulator (35) is spring piston type energy storage means, when the pressure of oil pipe (201) before the internal pressure of accumulator (35) is lower than valve, before valve, oil pipe (201) is oil-filled to it by the hydraulic fluid port 35P of accumulator (35), when the pressure of oil pipe (201) before the internal pressure of accumulator (35) is higher than valve, accumulator (35) by its hydraulic fluid port 35P to oil pipe (201) fuel feeding before valve; Described hand control valve (10) has parking gear P, the R that reverses gear, neutral N and forward gear D tetra-valve position, when hand control valve (10) is in parking gear P position, its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends, be in when reversing gear R position, its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends, when being in neutral N position, its filler opening 10P ends, hydraulic fluid port 10A is communicated with drain tap 10T, and when being in forward gear D position, its filler opening 10P is communicated with hydraulic fluid port 10A, drain tap 10T ends.

3. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 1 and 2, is characterized in that: described first two-way cylinder (11), the second two-way cylinder (12), the 3rd two-way cylinder (13) and the 4th two-way cylinder (14) are single pole two-way cylinder.

4. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 1 and 2, is characterized in that: described first unidirectional oil cylinder (26) and the second unidirectional oil cylinder (27) are the annular one-way cylinder with Returnning spring.

5. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 1 or 2, it is characterized in that: described first solenoid valve (19), the second solenoid valve (20), the 3rd solenoid valve (21), the 4th solenoid valve (22) and the 5th solenoid valve (23) are all switching mode 23 three-way electromagnetic valves, described 6th solenoid valve (24) and the 7th solenoid valve (25) are high speed switch type 23 three-way electromagnetic valves driven with pwm signal, and each solenoid valve being all in the 1st respective valve position, being all in the 2nd respective valve position when being energized when power-off; Inter-communicational relationship when first solenoid valve (19), the second solenoid valve (20), the 3rd solenoid valve (21), the 4th solenoid valve (22), the 5th solenoid valve (23), the 6th solenoid valve (24) and the 7th solenoid valve (25) are in different valve position is:

When first solenoid valve (19) is in the 1st valve position, its hydraulic fluid port 19A is communicated with drain tap 19T, filler opening 19P end, its drain tap 19T cut-off, filler opening 19P connection hydraulic fluid port 19A when being in the 2nd valve position;

When second solenoid valve (20) is in the 1st valve position, its hydraulic fluid port 20A is communicated with drain tap 20T, filler opening 20P end, its drain tap 20T cut-off, filler opening 20P connection hydraulic fluid port 20A when being in the 2nd valve position;

When 3rd solenoid valve (21) is in the 1st valve position, its hydraulic fluid port 21A is communicated with drain tap 21T, filler opening 21P end, its drain tap 21T cut-off, filler opening 21P connection hydraulic fluid port 21A when being in the 2nd valve position;

When 4th solenoid valve (22) is in the 1st valve position, its hydraulic fluid port 22A is communicated with drain tap 22T, filler opening 22P end, its drain tap 22T cut-off, filler opening 22P connection hydraulic fluid port 22A when being in the 2nd valve position;

When 5th solenoid valve (23) is in the 1st valve position, its hydraulic fluid port 23A is communicated with drain tap 23T, filler opening 23P end, its drain tap 23T cut-off, filler opening 22P connection hydraulic fluid port 23A when being in the 2nd valve position;

When 6th solenoid valve (24) is in the 1st valve position, its hydraulic fluid port 24A is communicated with drain tap 24T, filler opening 24P end, its drain tap 24T cut-off, filler opening 24P connection hydraulic fluid port 24A when being in the 2nd valve position;

When 7th solenoid valve (25) is in the 1st valve position, its hydraulic fluid port 25A is communicated with drain tap 25T, filler opening 25P end, its drain tap 25T cut-off, filler opening 25P connection hydraulic fluid port 25A when being in the 2nd valve position.

6. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 1 or 2, it is characterized in that: described motor-drive pump (30) is valve plate-type volume rotor pump, or external gear pump, or crescent gear pump, or internal messing cycloid rotor pump.

7. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 1 or 2, it is characterized in that: the DC electromotor with brush of described motor (31) to be operating voltage be 8 ~ 32V, or operating voltage is the permanent-magnetic brush-less DC motor of 8 ~ 32V, or operating voltage is the direct current stepping motor of 8 ~ 32V.

8. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems according to claim 2, is characterized in that: described hand control valve (10) is 43 logical Non-follow control guiding valves.