CN104948729B

CN104948729B - A kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system

Info

Publication number: CN104948729B
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: 2017-05-31
Anticipated expiration: 2035-05-11
Also published as: CN104948729A

Abstract

The present invention relates to a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control systems.Including electrodynamic pump, motor, check valve, overflow valve, accumulator, hand control valve, 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 magnetic valve.The present invention realizes parking gear P, reverse gear shift R, tetra- kinds of working conditions of neutral N and forward gear D by manually controlling hand control valve；The shifting and double-clutch power formed by the 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 are driven control function, realize 7 forward gears and 1 gear for reversing gear, and can realize in forward gear shift process to changing to the preset of gear, i.e., function of putting into gear in advance.

Description

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

Technical field

The invention belongs to be used for transmission for vehicles control system, and in particular to be a kind of for the 7 fast double clutches of opposed type The electrohydraulic control system of device speed changer.

Background technology

Transmission for vehicles is divided into manual transmission and automatic transmission.Manual transmission can only be entered by manual hand manipulation Row gearshift, automatic transmission can then realize self shifter；According to structure and variable speed operation implementation procedure, automatic transmission is divided into Automatic mechanical transmission (AMT), power shifting automatic transmission (AT), buncher (CVT) and dual-clutch transmission (DSG) several forms such as.At present, the automatic gear change function of automatic transmission is generally by transmission electronic control unit (TCU) indexing servo and execution system is controlled to realize；Indexing servo and execution system can be divided into electronic, pneumatic and hydraulic pressure again Three types, and it is generally up to about the mainly hydraulic control system for using.In hydraulic gear-shifting servo and executive control system, root According to control signal, servoelement and executing agency's type, all-hydraulic control and the major class of electrichydraulic control two can be divided into again.All-hydraulic control System refers to control signal and all hydraulic ways of servo implementation procedure, due to driver's operation must be intended to, engine and Vehicle operating status etc. are all converted to hydraulic pressure signal and are used to control fluid drive, cause that system complex, control accuracy be low, response Slowly, fault rate is high, is no longer used in modern vehicle automatic shift control；Electrichydraulic control is to use magnetic valve as servo control The actuator of element processed control gearshift execution system realizes fluid drive, and most of vehicle automatic transmissions are used at present All it is this pattern.In fluid drive electrohydraulic control system, the control according to magnetic valve to gear shifting actuating mechanism actuator oil circuit Mode processed, can be divided into two kinds of fundamental types of direct control type and indirect control formula；Direct control type is with proportion magnetic valve and many Position magnetic valve is controlled to complete shift speed change to actuator oil circuit, and its advantage is that system architecture is relatively easy, precision of shifting gears High, response is fast, has the disadvantage that used electromagnetic valve structure is complicated, is more expensive to manufacture, to magnetic valve performance and control accuracy requirement High, sensitive to hydraulic oil pollution, system failure rate is of a relatively high；Indirect control formula is by using the switching mode electricity of simple structure Control of the high speed switch type magnetic valve (PWM controls) that magnet valve, solenoid directional control valve or pulse-width signal drive to servo guiding valve, Indirect control actuator oil circuit completes shift speed change, although its system parts is more, structure is relative complex, control response is relative It is relatively slow, but electromagnetic valve structure used is simple, it is easy to control, and low to magnetic valve performance and control accuracy requirement, system is to hydraulic oil Pollution is insensitive, and system failure rate, difficulty of processing and manufacturing cost are relatively low；With reference to directly two kinds of control and indirect control Pattern, can also form mixing control formula electrohydraulic control system, be characterized in the direct control unit of the solenoid directional control valve of simple structure Point actuator oil circuit, while the high speed driven by using simple electromagnetic switch valve, solenoid directional control valve or pulse-width signal Control of the switching mode magnetic valve to servo guiding valve, indirect control another part actuator oil circuit, thus mixing type hydraulic are controlled The characteristics of system has directly control and two kinds of patterns of indirect control concurrently.

The content of the invention

In order to reduce gearshift of vehicle transmission electrohydraulic control system parts machining difficulty and manufacturing cost, the system of raising can By property, the present invention proposes a kind of for 1 coaxial opposed type clutch dual-clutch transmission reversed gear with 7 forward gears Electrohydraulic control system.

A kind of 7 fast opposed type dual-clutch transmission includes electrodynamic pump 30, motor 31, check valve with electrohydraulic control system 32nd, overflow valve 33, accumulator 35, hand control valve 10, the first shift control unit, the second shift control unit, the 3rd gearshift control Unit, the 4th shift control unit, first clutch control unit, second clutch control unit and the 5th magnetic valve 23；

First shift control unit is sequentially connected by the first two-way cylinder 11, the first guiding valve 15 and the first magnetic valve 19 Constitute, control the first forward gear D1's and the 3rd forward gear D3 puts into gear or move back gear；Second shift control unit is by the second two-way oil Cylinder 12, the second guiding valve 16 and the second magnetic valve 20 are sequentially connected composition, control the extension of the second forward gear D2 and the 4th forward gear D4 Keep off or move back gear；3rd shift control unit is sequentially connected structure by the 3rd two-way cylinder 13, the 3rd guiding valve 17 and the 3rd magnetic valve 21 Putting into gear or move back gear into, control the 7th forward gear D7 and the 5th forward gear D5；4th shift control unit is by the 4th two-way cylinder 14th, the 4th guiding valve 18 and the 4th magnetic valve 22 are sequentially connected composition, and the control R and the 6th forward gear D6 that reverses gear puts into gear or moves back gear；

The first clutch control unit is in series by the first unidirectional oil cylinder 26 and the 6th magnetic valve 24, control first Forward gear D1, the 3rd forward gear D3, the power of the 5th forward gear D5 and the 7th forward gear D7 are combined or interrupted；Second clutch Device control unit is in series by the second unidirectional oil cylinder 27 and the 7th magnetic valve 25, the second forward gear D2 of control, the 4th forward gear D4, the power of the 6th forward gear D6 and R that reverses gear are combined or interrupted；

First shift control unit, the second shift control unit, the 3rd shift control unit, the 4th gearshift control are single Unit and first clutch control unit, second clutch control unit form shifting and double-clutch power transmission control work( Can, realize 7 forward gears and 1 speed Control reversed gear.

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

The hydraulic fluid port 11A of the rodless cavity of first two-way cylinder 11 connects the second hydraulic fluid port 15B of the first guiding valve 15, has bar The hydraulic fluid port 11B in chamber connects the first hydraulic fluid port 15A of the first guiding valve 15 and hydraulic fluid port 19A of the first magnetic valve 19 simultaneously；Described first The drain tap 15T of guiding valve 15 connects the first hydraulic fluid port 23A that oil groove 28, control port 15X connect the 5th magnetic valve 23；It is described The oil inlet 19P of the first magnetic valve 19 connects oil pipe 202 after valve, drain tap 19T and connects oil groove 28；5th magnetic valve 23 oil inlet 23P connects oil pipe 202 after valve, drain tap 23T and connects oil groove 28；When to the first two-way cylinder 11 without bar Chamber and rod chamber simultaneously fuel feeding when make its piston move to right position to realize that the gear of forward gear D1 is preset, when the first two-way cylinder 11 Rodless cavity draining, while during to its rod chamber fuel feeding, making its piston move to left position and realizing that the gear of forward gear D3 is preset, when first The rodless cavity and rod chamber of two-way cylinder 11 simultaneously draining when, make its piston rest in present position, when the first two-way cylinder 11 Piston realize neutral N when moving to centre position；

The hydraulic fluid port 12A of the rodless cavity of second two-way cylinder 12 connects the second hydraulic fluid port 16B of the second guiding valve 16, has bar The hydraulic fluid port 12B in chamber connects the first hydraulic fluid port 16A of the second guiding valve 16 and hydraulic fluid port 20A of the second magnetic valve 20 simultaneously；Described second The drain tap 16T of guiding valve 16 connects oil groove 28, control port 16X and connects the hydraulic fluid port 23A of the 5th magnetic valve 23；Described second The oil inlet 20P of magnetic valve 20 connects oil pipe 202 after valve, drain tap 20T and connects oil groove 28；When to the second two-way cylinder 12 Rodless cavity and rod chamber simultaneously fuel feeding when, its piston is moved to right position and realize that the gear of forward gear D4 is preset, when second two-way The rodless cavity draining of oil cylinder 12, while during to its rod chamber fuel feeding, making its piston move to left position and realizing that the gear of forward gear D2 is pre- Put, when rodless cavity and the rod chamber draining simultaneously of the second two-way cylinder 12, make its piston rest in present position, when second pair Neutral N is realized when moving to centre position to the piston of oil cylinder 12；

The hydraulic fluid port 13A of the rodless cavity of the 3rd two-way cylinder 13 connects the second hydraulic fluid port 17B of the 3rd guiding valve 17, has bar The hydraulic fluid port 13B in chamber connects the first hydraulic fluid port 17A of the 3rd guiding valve 17 and hydraulic fluid port 21A of the 3rd magnetic valve 21 simultaneously；Described 3rd The drain tap 17T of guiding valve 17 connects oil groove 28, control port 17X and connects the hydraulic fluid port 23A of the 5th magnetic valve 23；Described 3rd The oil inlet 21P of magnetic valve 21 connects oil pipe 202 after valve, drain tap 20T and connects oil groove 28；When to the 3rd two-way cylinder 13 Rodless cavity and rod chamber simultaneously fuel feeding when, its piston is moved to right position and realize that the gear of forward gear D5 is preset, when the 3rd two-way The rodless cavity draining of oil cylinder 13, while during to its rod chamber fuel feeding, making its piston move to left position and realizing that the gear of forward gear D7 is pre- Put, when rodless cavity and the rod chamber draining simultaneously of the 3rd two-way cylinder 13, make its piston rest in present position, when the 3rd pair Neutral N is realized when moving to centre position to the piston of oil cylinder 13；

The hydraulic fluid port 14A of the rodless cavity of the 4th two-way cylinder 14 connects the second hydraulic fluid port 18B of the 4th guiding valve 18, has bar The hydraulic fluid port 14B in chamber connects the first hydraulic fluid port 18A of the 4th guiding valve 18 and hydraulic fluid port 22A of the 4th magnetic valve 22 simultaneously；Described 4th The drain tap 18T of guiding valve 18 connects oil groove 28, control port 18X and connects the hydraulic fluid port 23A of the 5th magnetic valve 23；Described 4th The oil inlet 22P of magnetic valve 22 connects oil pipe 202 after valve, drain tap 20T and connects oil groove 28；When to the 4th two-way cylinder 14 Rodless cavity and rod chamber simultaneously fuel feeding when, its piston is moved to right position and realize that the gear of forward gear D6 is preset, when the 4th two-way The rodless cavity draining of oil cylinder 14, while during to its rod chamber fuel feeding, make its piston move to left position realize reversing gear R gear it is preset, When rodless cavity and the rod chamber draining simultaneously of the 4th two-way cylinder 14, make its piston rest in present position, when the 4th two-way The piston of oil cylinder 14 realizes neutral N when moving to centre position；

The hydraulic fluid port 26A of the first unidirectional oil cylinder 26 connects the hydraulic fluid port 24A of the 6th magnetic valve 24；6th magnetic valve 24 oil inlet 24P connects oil pipe 202 after valve, drain tap 24T and connects oil groove 28；During to the first unidirectional 26 fuel feeding of oil cylinder, Its piston is moved to the transmission that a certain gear in forward gear D1, D3, D5, D7 is realized in right position, during the first unidirectional 26 draining of oil cylinder, make Its piston is displaced downwardly to the transmission of a certain gear during forward gear D1, D3, D5, D7 are interrupted in left position in action of reset spring；

The hydraulic fluid port 27A of the second unidirectional oil cylinder 27 connects the hydraulic fluid port 25A of the 7th magnetic valve 25；7th magnetic valve 25 oil inlet 25P connects oil pipe 202 after valve, drain tap 25T and connects oil groove 28；During to the second unidirectional 27 fuel feeding of oil cylinder, 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, the draining of the second unidirectional oil cylinder 27 When, make its piston that the transmission of a certain gear during reverse gear R or forward gear D2, D4, D6 are interrupted in left position is displaced downwardly in action of reset spring；

The electrodynamic pump 30 is connected with motor 31 by motor shaft EMZ, and the first hydraulic fluid port 30A of electrodynamic pump 30 connects Filter 29, the first hydraulic fluid port 29A connection oil grooves 28 of filter 29；The second hydraulic fluid port 30B connection check valves 32 of electrodynamic pump 30 First hydraulic fluid port 32A, the second hydraulic fluid port 32B of check valve 32 connected simultaneously by oil pipe 201 before valve overflow valve 33 the first hydraulic fluid port 33A, The oil inlet 10P of the hydraulic fluid port 34P of oil pressure sensor 34, the hydraulic fluid port 35P of accumulator 35 and hand control valve 10；When the first of check valve 32 Check valve 32 is turned on when pressure at hydraulic fluid port 32A is more than its second hydraulic fluid port 32B, the pressure at the first hydraulic fluid port 32A of check valve 32 Check valve 32 ends when power is less than its second hydraulic fluid port 32B；Oil pressure at the first hydraulic fluid port 33A of overflow valve 33 exceedes the oil of setting Its first hydraulic fluid port 33A connects the second hydraulic fluid port 33B during pressure maximum, the fluid before valve in oil pipe 201 through overflow valve 33 the first oil Mouthful 33A and the second hydraulic fluid port 33B flow to oil groove 28, make the oil pressure reduction in oil pipe 201 before valve, when the first hydraulic fluid port of overflow valve 33 Its first hydraulic fluid port 33A, the second hydraulic fluid port 33B end simultaneously when oil pressure at 33A is less than or equal to the oil pressure maximum of setting；Work as valve When oil pressure is less than system minimum operating pressure in preceding oil pipe 201, motor 31 works, when oil pressure is higher than system in oil pipe 201 before valve During maximum working pressure, motor 31 is stopped；The accumulator 35 is spring piston type energy storage means, when in accumulator 35 Portion's pressure is less than during the pressure of oil pipe 201, oil pipe 201 is oil-filled to its by the hydraulic fluid port 35P of accumulator 35 before valve, works as accumulation of energy before valve The internal pressure of device 35 is higher than during the pressure of oil pipe 201, accumulator 35 is by its hydraulic fluid port 35P to the fuel feeding of oil pipe before valve 201 before valve； The hand control valve 10 has parking gear P, the R that reverses gear, tetra- valves of neutral N and forward gear D position, and hand control valve 10 is in parking when keeping off P, Its oil inlet 10P connections hydraulic fluid port 10A, drain tap 10T cut-offs, in reverse gear R when, its oil inlet 10P connects hydraulic fluid port 10A, lets out Hydraulic fluid port 10T end, in neutral N when, its oil inlet 10P cut-off, hydraulic fluid port 10A connect drain tap 10T, in forward gear D When, its oil inlet 10P connection hydraulic fluid ports 10A, drain tap 10T cut-offs.

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.

The unidirectional oil cylinder 27 of the first unidirectional oil cylinder 26 and second is the annular one-way cylinder with back-moving spring.

First magnetic valve 19, the second magnetic valve 20, the 3rd magnetic valve 21, the 4th magnetic valve 22 and the 5th magnetic valve 23 It is 23 three-way electromagnetic valves of switching mode, the 6th magnetic valve 24 and the 7th magnetic valve 25 are the high speed driven with pwm signal 23 three-way electromagnetic valves of switching mode, and each magnetic valve be in when power is off respective 1st valve position, be in when being powered it is respective 2nd valve position；First magnetic valve 19, the second magnetic valve 20, the 3rd magnetic valve 21, the 4th magnetic valve 22, the 5th magnetic valve the 23, the 6th The inter-communicational relationship when magnetic valve 25 of magnetic valve 24 and the 7th is in different valves position is：

Its hydraulic fluid port 19A connection drain taps 19T, oil inlet 19P cut-offs when first magnetic valve 19 is in the 1st valve position, in the 2nd Its drain tap 19T cut-offs, oil inlet 19P connection hydraulic fluid ports 19A during valve position；

Its hydraulic fluid port 20A connection drain taps 20T, oil inlet 20P cut-offs when second magnetic valve 20 is in the 1st valve position, in the 2nd Its drain tap 20T cut-offs, oil inlet 20P connection hydraulic fluid ports 20A during valve position；

Its hydraulic fluid port 21A connection drain taps 21T, oil inlet 21P cut-offs when 3rd magnetic valve 21 is in the 1st valve position, in the 2nd Its drain tap 21T cut-offs, oil inlet 21P connection hydraulic fluid ports 21A during valve position；

Its hydraulic fluid port 22A connection drain taps 22T, oil inlet 22P cut-offs when 4th magnetic valve 22 is in the 1st valve position, in the 2nd Its drain tap 22T cut-offs, oil inlet 22P connection hydraulic fluid ports 22A during valve position；

Its hydraulic fluid port 23A connection drain taps 23T, oil inlet 23P cut-offs when 5th magnetic valve 23 is in the 1st valve position, in the 2nd Its drain tap 23T cut-offs, oil inlet 22P connection hydraulic fluid ports 23A during valve position；

Its hydraulic fluid port 24A connection drain taps 24T, oil inlet 24P cut-offs when 6th magnetic valve 24 is in the 1st valve position, in the 2nd Its drain tap 24T cut-offs, oil inlet 24P connection hydraulic fluid ports 24A during valve position；

Its hydraulic fluid port 25A connection drain taps 25T, oil inlet 25P cut-offs when 7th magnetic valve 25 is in the 1st valve position, in the 2nd Its drain tap 25T cut-offs, oil inlet 25P connection hydraulic fluid ports 25A during valve position.

The electrodynamic pump 30 is valve plate-type volume impeller pump, or external gear rotary pump, or crescent gear pump, or Internal messing cycloid rotor pump.

The motor 31 is the DC electromotor with brush that operating voltage is 8~32V, or operating voltage is the straight of 8~32V Stream permanent magnet brushless electromotor, or the direct current stepping motor that operating voltage is 8~32V.

The hand control valve 10 is 43 and leads to manual spool control valve.

Advantageous Effects of the invention embody in the following areas：

1. the fast opposed type dual-clutch transmission electrohydraulic control system of the present invention a kind of 7, can reverse gear and 7 with 1 The coaxial opposed type clutch dual-clutch transmission of individual forward gear is supporting.

2. the fast opposed type dual-clutch transmission electrohydraulic control system of the present invention a kind of 7, by manually controlling hand Control valve 10, can make speed changer realize parking gear P, reverse gear shift R, neutral N and forward gear D kind working conditions；By electrichydraulic control system The different valve bit combinations of each valve in system, can make speed changer realize 7 forward gears and 1 power transmission reversed gear, and can realize To changing to preset (the putting into gear in advance) of gear in forward gear shift process.

3. the fast opposed type dual-clutch transmission electrohydraulic control system of the present invention a kind of 7, using by electrodynamic pump 30, motor 31st, check valve 32, overflow valve 33, oil pressure sensor 34, accumulator 35 and the electric hydaulic source that oil pipe 201 is constituted before valve are individually right Electrohydraulic control system feed flow of the present invention, it is to avoid other modules of engine speed and composition speed changer are electro-hydraulic to the present invention The influence of control system oil pressure and fluid flow, meanwhile, by overflow pressure relief effect, the signal of oil pressure sensor 34 of overflow valve 33 The energy-storage buffering and compensating action of feedback control, accumulator 35 after output, can be to the working oil of invention electrohydraulic control system Pressure and hydraulic flow carry out precise control, and can form preferable energy-saving effect.

4. the fast opposed type dual-clutch transmission electrohydraulic control system of the present invention a kind of 7, is controlled single by transmission electronic First TCU controls drive seven 23 three-way electromagnetic valves, i.e. the first magnetic valve 19, the second magnetic valve 20, the electricity of the 3rd magnetic valve the 21, the 4th Gear shift is realized in the valve position of magnet valve 22, the 5th magnetic valve 23, the 6th magnetic valve 24 and the 7th magnetic valve 25, by speed changer Automatic shift control software is set up in electronic control unit TCU, the fluid drive between 7 forward gears of speed changer is capable of achieving.

Brief description of the drawings

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

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 electromagnetism Valve；20. second magnetic valves；21. the 3rd magnetic valves；22. the 4th magnetic valves；23. the 5th magnetic valves；24. the 6th magnetic valves；25. 7th magnetic valve；26. first unidirectional oil cylinders；27. second unidirectional oil cylinders；28. oil grooves；29. filters；30. electrodynamic pumps；31. electricity Machine；32. check valves；33. overflow valves；34. oil pressure sensors；35. accumulators；EMZ. motor shaft；Oil pipe before 201. valves；202. valves Oil pipe afterwards.

Specific embodiment

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

Embodiment

Referring to Fig. 1, a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system include electrodynamic pump 30, motor 31, Check valve 32, overflow valve 33, accumulator 35, hand control valve 10, the first shift control unit, the second shift control unit, the 3rd change Gear control unit, the 4th shift control unit, first clutch control unit, second clutch control unit and the 5th magnetic valve 23；

First shift control unit is sequentially connected structure by the first two-way cylinder 11, the first guiding valve 15 and the first magnetic valve 19 Into control the first forward gear D1 and the 3rd forward gear D3 puts into gear or move back gear；Second control unit is by the second two-way cylinder 12, second The magnetic valve 20 of guiding valve 16 and second is sequentially connected composition, and control the second forward gear D2 and the 4th forward gear D4 puts into gear or move back gear；The Three control units are sequentially connected and are constituted by the 3rd two-way cylinder 13, the 3rd guiding valve 17 and the 3rd magnetic valve 21, and control the 7th is advanced Gear D7 and the 5th forward gear D5 puts into gear or moves back gear；4th control unit is by the 4th two-way cylinder 14, the 4th guiding valve 18 and the 4th electricity Magnet valve 22 is sequentially connected composition, and the control R and the 6th forward gear D6 that reverses gear puts into gear or move back gear；

First clutch control unit is in series by the first unidirectional oil cylinder 26 and the 6th magnetic valve 24, and control first is advanced Gear D1, the 3rd forward gear D3, the power of the 5th forward gear D5 and the 7th forward gear D7 are combined or interrupted；Second clutch control is single Unit is in series by the second unidirectional oil cylinder 27 and the 7th magnetic valve 25, before the second forward gear D2 of control, the 4th forward gear D4, the 6th Enter to keep off D6 and the power of the R that reverses gear is combined or interrupted.

Electrodynamic pump 30 is valve plate-type volume impeller pump, or external gear rotary pump, or crescent gear pump, or interior is nibbled Close cycloid rotor pump.

Motor 31 is the DC electromotor with brush that operating voltage is 8~32V, or the direct current that operating voltage is 8~32V is forever Magnetic brushless motor, or the direct current stepping motor that operating voltage is 8~32V.

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

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

Hand control valve 10 is 43 and leads to manual spool control valve.

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

Operation principle of the invention is as follows：

Referring to Fig. 1, when engine is started, hand control valve 10 must be placed in P or N；Engine is started and enters normal idling After operating, hand control valve 10 is placed in parking keeps off P makes its oil inlet 10P connect hydraulic fluid port 10A, drain tap 10T cut-off, oil pipe before valve Fluid in 201 through the oil inlet 10P and hydraulic fluid port 10A of hand control valve 10 to the fuel feeding of oil pipe after valve 202, by transmission electronic control Unit TCU controls make each magnetic valve be in respective 1st valve position, each oil cylinder be in it is respective N.

In electrohydraulic control system of the present invention, sensed by electrodynamic pump 30, motor 31, check valve 32, overflow valve 33, oil pressure Device 34, accumulator 35 and the composition of oil pipe 201 electric hydaulic source individually provides servo and start fluid to system before valve；Institute of the present invention When stating electrohydraulic control system work, pressure sensor 34 is by fluid in oil pipe 201 before its fuel injection pressure signal acquisition port 34P collection valves Pressure value and be delivered to System Electronic Control Unit TCU, when the oil pressure value for being gathered exceed the electrohydraulic control system it is normal Needed for work during oil pressure, the fluid stored from accumulator 35 by its hydraulic fluid port 35P to the feed flow of oil pipe before valve 201, when being adopted When the oil pressure value of collection is less than minimum oil pressure needed for the electrohydraulic control system normal work is ensured, TCU controlled motors 31 are started simultaneously Electrodynamic pump 30 is driven to operate, electrodynamic pump 30 is through its first hydraulic fluid port 30A, the second hydraulic fluid port 29B of filter 29 and the first hydraulic fluid port 29A by oil Groove 28 suck fluid and to suck fluid pressurization after through its second hydraulic fluid port 30B, the first hydraulic fluid port 32A and second of check valve 32 Pressure oil liquid is delivered to oil pipe 201 before valve by hydraulic fluid port 32B, is partly into the pressure oil liquid of oil pipe 201 before valve through accumulator 35 Hydraulic fluid port 35P stored into accumulator 35, make accumulator 35 store fluid amount increase while making stored by accumulator 35 Oil liquid pressure constantly increase until reach ensure system worked well MTP, hand control valve 10 be in its parking keep off P Position, reverse gear R or forward gear D when, another part into oil pipe 201 before valve pressure oil liquid through hand control valve 10 oil inlet 10P and hydraulic fluid port 10A are delivered to oil pipe 202 after valve；When the oil liquid pressure in oil pipe 201 before the valve that pressure sensor 34 is gathered reaches During to the MTP for ensureing system worked well, TCU controlled motors 31 are stopped；Check valve 32 is in its first hydraulic fluid port 32A Oil pressure of the oil pressure higher than its second hydraulic fluid port 32B when conducting, its first hydraulic fluid port 32A oil pressure less than its second hydraulic fluid port 32B During oil pressure end, its effect be ensure when electrodynamic pump 30 shuts down enter valve before oil pipe 201 and accumulator 35 fluid not Cause backflow and cause energy loss；Overflow valve 33 because of oil circuit blocking, fluid flowing causes hydraulic power or water hammer etc. are led Oil liquid pressure before cause valve in oil pipe 201 is higher than that overflow valve 33 is in its interior oil when ensureing the MTP of system worked well In the presence of pressure, its hydraulic fluid port 33A connects its drain tap 33T, the oil pipe 201 before valve is let out through its hydraulic fluid port 33A and drain tap 33T Pressure, it is to avoid system causes system failure.

During reversing, hand control valve 10 is kept off P and be moved to reverse gear R by parking makes its oil inlet 10P connect hydraulic fluid port 10A, draining Mouthful 10T cut-off, the fluid before valve in oil pipe 201 enter valve through the oil inlet 10P and hydraulic fluid port 10A of hand control valve 10 after oil pipe 202；The Five magnetic valve 23 is powered in the 2nd valve position, its drain tap 23T cut-offs, oil inlet 23P connection hydraulic fluid port 23A, after valve in oil pipe 202 Fluid is to the control mouth 18X fuel feeding of the 4th guiding valve 18 through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 2 valves position, the first hydraulic fluid port 18A cut-offs drain tap 18T of the second hydraulic fluid port 18B connections simultaneously, the rodless cavity hydraulic fluid port of the 4th two-way cylinder 14 The second hydraulic fluid port 18B and drain tap 18T drainings that 14A passes through the 4th guiding valve 18, then, the 4th magnetic valve 22 is powered and is in the 2nd valve Position makes its drain tap 22T end the hydraulic fluid port 22A of oil inlet 22P connections simultaneously, and the fluid after valve in oil pipe 202 is through the 4th magnetic valve 22 Oil inlet 22P and hydraulic fluid port 22A to the rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, make the work of the 4th two-way cylinder 14 Plug moves to left position and realizes reversing gear the putting into gear of R, and afterwards, the power-off of the 4th magnetic valve 22 makes its hydraulic fluid port 22A connect draining in the 1st valve position Mouth 22T oil inlet 22P cut-offs simultaneously, make the rodless cavity hydraulic fluid port 14A and rod chamber hydraulic fluid port 14B of the 4th two-way cylinder 14 while being in Draining state, so that the piston of the 4th two-way cylinder 14 is maintained at left position and keeps reversing gear the state of putting into gear of R, then, the 5th electricity The power-off of magnet valve 23 makes its oil inlet 23P end the drain tap 23T of hydraulic fluid port 23A connections simultaneously, the control of the 4th guiding valve 18 in the 1st valve position Donsole 18X by the hydraulic fluid port 23A and drain tap 23T drainings of the 5th magnetic valve 23, make the 4th guiding valve 18 in the 1st valve position, its One hydraulic fluid port 18A connects the second hydraulic fluid port 18B drain tap 18T cut-offs simultaneously；At the same time, the first magnetic valve 19, the second magnetic valve 20 Powered off with the 3rd magnetic valve 21 in respective 1st valve position, make the rodless cavity hydraulic fluid port 11A and rod chamber of the first two-way cylinder 11 Hydraulic fluid port 11B is in simultaneously in draining state, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rod chamber hydraulic fluid port 12B simultaneously Draining state, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rod chamber hydraulic fluid port 13B are in draining state simultaneously, so that The piston of the first two-way cylinder 12, the second two-way cylinder 12 and the 3rd two-way cylinder 13 is in respective middle position N；Hereafter, Seven magnetic valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port 25A of oil inlet 25P connections simultaneously, oil pipe after valve in the 2nd valve position Fluid in 202, to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27, makes through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 The piston of the second unidirectional oil cylinder 27 moves to right position and realizes R gear transmissions of reversing gear.

When changing to parking gear by the R that reverses gear, hand control valve 10 is moved to P, makes its oil inlet 10P connection hydraulic fluid ports 10A same by R When drain tap 10T cut-off, the fluid before valve in oil pipe 201 enter valve through the oil inlet 10P and hydraulic fluid port 10A of hand control valve 10 after oil pipe 202；7th magnetic valve 25 to be powered off and end its oil inlet 25P in the 1st valve position while hydraulic fluid port 25A connects drain tap 25T, second The hydraulic fluid port 27A of unidirectional oil cylinder 27 makes its piston move to left position N by the hydraulic fluid port 25A and drain tap 25T drainings of the 7th magnetic valve 25 Interrupt R gear transmissions；Then, the 4th magnetic valve 22 to be powered and end its drain tap 22T in the 2nd valve position while oil inlet 22P connects Logical hydraulic fluid port 22A, the fluid after valve in oil pipe 202 is two-way to the 4th through the oil inlet 22P and hydraulic fluid port 22A of the 4th magnetic valve 22 simultaneously Rod chamber hydraulic fluid port 14B fuel feeding, oil inlet 22P and hydraulic fluid port 22A through the 4th magnetic valve 22, the first of the 4th guiding valve 18 of oil cylinder 14 Hydraulic fluid port 18A and the second hydraulic fluid port 18B makes the work of the 4th two-way cylinder 14 to the rodless cavity hydraulic fluid port 14A fuel feeding of the 4th two-way cylinder 14 Plug is moved to right, and when its piston moves to middle position N, the power-off of the 4th magnetic valve 22 makes its oil inlet 22P end simultaneously in the 1st valve position Hydraulic fluid port 22A connects drain tap 22T, and the rod chamber hydraulic fluid port 14B and rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 are in draining simultaneously State is so that its piston is maintained at middle position N；So far, all magnetic valves, guiding valve and oil cylinder full recovery to each comfortable P keep off when Position.

When changing to neutral by the R that reverses gear, hand control valve 10 is moved to N by R makes its oil inlet 10P end hydraulic fluid port 10A simultaneously Connection drain tap 10T, the passage of oil pipe 202 is blocked after the communicating valve of oil pipe 201 before valve, the fluid after valve in oil pipe 202 is handled The hydraulic fluid port 10A and drain tap 10T of valve 10 are controlled to the draining of oil groove 28, while the power-off of the 7th magnetic valve 25 enters it in the 1st valve position The hydraulic fluid port 25P cut-offs drain tap 25T of hydraulic fluid port 25A connections simultaneously, the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is by the 7th magnetic valve 25 Hydraulic fluid port 25A and drain tap 25T drainings make its piston move to left position N interruptions R gear transmissions；Now, due to the first unidirectional oil cylinder 26 The hydraulic fluid port 27A of hydraulic fluid port 26A and the second unidirectional oil cylinder 27 is in draining state, it is impossible to form the transmission of any gear so as to realize Neutral.

Changed to by neutral when reversing gear R, hand control valve 10 is moved to R by N makes its oil inlet 10P connect hydraulic fluid port 10A, before valve Fluid in oil pipe 201 enter valve through the oil inlet 10P and hydraulic fluid port 10A of hand control valve 10 after oil pipe 202；5th magnetic valve 23 is powered Its drain tap 23T is set to end the hydraulic fluid port 23A of oil inlet 23P connections simultaneously in the 2nd valve position, fluid after valve in oil pipe 202 is through the The oil inlet 23P and hydraulic fluid port 23A of five magnetic valves 23 the control mouth 18X fuel feeding of the 4th guiding valve 18 is at the 2nd valve position, its The one hydraulic fluid port 18A cut-offs drain tap 18T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 of the second hydraulic fluid port 18B connections simultaneously is by the The second hydraulic fluid port 18B and drain tap 18T drainings of four guiding valves 18, then, the 4th magnetic valve 22 to be powered and make its draining in the 2nd valve position Mouthful 22T cut-off hydraulic fluid port 22A of oil inlet 22P connections simultaneously, fluid after valve in oil pipe 202 through the 4th magnetic valve 22 oil inlet 22P and hydraulic fluid port 22A makes the piston of the 4th two-way cylinder 14 move to a left side rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14 The putting into gear of R of reversing gear is realized in position, and afterwards, the power-off of the 4th magnetic valve 22 makes the rodless cavity oil of the 4th two-way cylinder 14 in the 1st valve position Mouth 14A and rod chamber hydraulic fluid port 14B is in draining state simultaneously, so that the piston rest of the 4th two-way cylinder 14 is in left position R；This Afterwards, the 5th magnetic valve 23 to be powered off and end its oil inlet 23P in the 1st valve position while hydraulic fluid port 23A connects drain tap 23T, the 4th The control mouth 18X of guiding valve 18 passes through hydraulic fluid port 23A and drain tap the 23T draining of the 5th magnetic valve 23, the 4th guiding valve is in the 1st valve Position；Now, the first magnetic valve 19, the second magnetic valve 20 and the 3rd magnetic valve 21 are powered off in respective 1st valve position, make first The rodless cavity hydraulic fluid port 11A and rod chamber hydraulic fluid port 11B of two-way cylinder 11 simultaneously in draining state, the second two-way cylinder 12 without bar Chamber hydraulic fluid port 12A and rod chamber hydraulic fluid port 12B in draining state, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and has bar simultaneously Chamber hydraulic fluid port 13B is in draining state simultaneously, so that the first two-way cylinder 12, the second two-way cylinder 12 and the 3rd two-way cylinder 13 Piston be in respective middle position N；Hereafter, the 7th magnetic valve 25 is powered and its drain tap 25T is ended simultaneously in the 2nd valve position Oil inlet 25P connects hydraulic fluid port 25A, fluid after valve in oil pipe 202 through the 7th magnetic valve 25 oil inlet 25P and hydraulic fluid port 25A pairs The hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27, makes the piston of the second unidirectional oil cylinder 27 move to right position and realizes R gear transmissions of reversing gear.

Vehicle is walked when advancing with D1 dammed ups, and hand control valve 10 is moved to D by N makes its oil inlet 10P connection hydraulic fluid ports 10A same When drain tap 10T cut-off, the fluid before valve in oil pipe 201 enter valve through the oil inlet 10P and hydraulic fluid port 10A of hand control valve 10 after oil pipe 202；5th magnetic valve 23 to be powered off and end its oil inlet 23P in the 1st valve position while hydraulic fluid port 23A connects drain tap 23T, first Hydraulic fluid port 23A and drain tap 23T drainings that the control mouth 15X of guiding valve 15 passes through the 5th magnetic valve 23, make the first guiding valve 15 in the 1st The first hydraulic fluid port 15A connects the second hydraulic fluid port 15B simultaneously for valve position, its drain tap 15T cut-offs；First magnetic valve 19 is powered and is in the 2nd valve Position makes its drain tap 19T end the hydraulic fluid port 19A of oil inlet 19P connections simultaneously, and the fluid after valve in oil pipe 202 is through the first magnetic valve 19 Oil inlet 19P and hydraulic fluid port 19A to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, meanwhile, after valve in oil pipe 202 Fluid is through the oil inlet 19P and hydraulic fluid port 19A of the first magnetic valve 19, the first hydraulic fluid port 15A of the first guiding valve 15 and the second hydraulic fluid port 15B pairs The rodless cavity hydraulic fluid port 11A fuel feeding of the first two-way cylinder 11, so that the piston of the first two-way cylinder 11 moves to right position, realizes advancing The gear for keeping off D1 is preset；Hereafter, the 6th magnetic valve 24 is powered and its drain tap 24T is ended oil inlet 24P simultaneously in the 2nd valve position Connection hydraulic fluid port 24A, the fluid after valve in oil pipe 202 is through the oil inlet 24P and hydraulic fluid port 24A of the 6th magnetic valve 24 to the first unidirectional oil The hydraulic fluid port 26A fuel feeding of cylinder 26 makes its piston move to right position, realizes the transmission of D1 gears, completes the starting of vehicle forward gear.

When changing to neutral by D1 gears, hand control valve 10 is moved to N by D makes its oil inlet 10P end hydraulic fluid port 10A companies simultaneously Remove heat by catharsis hydraulic fluid port 10T, and the passage of oil pipe 202 is blocked after the communicating valve of oil pipe 201 before valve, the fluid after valve in oil pipe 202 is through manual control The hydraulic fluid port 10A and drain tap 10T of valve 10 are to the draining of oil groove 28, while the power-off of the 6th magnetic valve 24 makes its oil-feed in the 1st valve position Mouth 24P cut-offs hydraulic fluid port 24A connections simultaneously drain tap 24T, the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 pass through the oil of the 6th magnetic valve 24 Mouth 24A and drain tap 24T drainings make its piston move to left position N interruptions D1 gear transmissions；Now, due to the oil of the first unidirectional oil cylinder 26 The hydraulic fluid port 27A of mouthful 26A and the second unidirectional oil cylinder 27 is in draining state, it is impossible to form the transmission of any gear it is achieved thereby that Neutral.

When changing to D2 gears by D1 gears, the 5th magnetic valve 23 is powered and its drain tap 23T is ended while oil-feed in the 2nd valve position Mouth 23P connection hydraulic fluid port 23A, the fluid after valve in oil pipe 202 is through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 to second The control mouth 16X fuel feeding of guiding valve 16 is at the 2nd valve position, its first hydraulic fluid port 16A cut-offs draining of the second hydraulic fluid port 16B connections simultaneously Mouthful 16T, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 are let out by the second hydraulic fluid port 16B and drain tap 16T of the second guiding valve 16 Oil；Then, the second magnetic valve 20 is powered and its drain tap 20T is ended the hydraulic fluid port 20A of oil inlet 20P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 20P and hydraulic fluid port 20A of the second magnetic valve 20 to the rod chamber of the second two-way cylinder 12 Hydraulic fluid port 12B fuel feeding, makes the piston of the second two-way cylinder 12 move to left position, realizes that the gear of D2 gears is preset；Then, the second magnetic valve 20 power-off make its oil inlet 20P end the drain tap 20T of hydraulic fluid port 20A connections simultaneously in the 1st valve position, at the power-off of the 5th magnetic valve 23 Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, make the rodless cavity oil of the second two-way cylinder 12 Mouth 12A and rod chamber hydraulic fluid port 12B is in draining state simultaneously so that its piston is maintained at left position D2 gears；Afterwards, the 6th electromagnetism The power-off of valve 24 makes its oil inlet 24P end the drain tap 24 of T hydraulic fluid ports 24A connections simultaneously in the 1st valve position, the first unidirectional oil cylinder 26 Hydraulic fluid port 26A makes its piston move to left position N, interrupts forward gear D1 by the hydraulic fluid port 24A and drain tap 24T drainings of the 6th magnetic valve 24 Transmission；Hereafter, the 7th magnetic valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port of oil inlet 25P connections simultaneously in the 2nd valve position 25A, fluid after valve in oil pipe 202 is through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 to the oil of the second unidirectional oil cylinder 27 Mouth 27A fuel feeding, makes its piston move to right position so as to realize that forward gear D2 is driven；Finally, the 5th magnetic valve 23 is powered and is in the 2nd valve Position makes its drain tap 23T end the hydraulic fluid port 23A of oil inlet 23P connections simultaneously, and the fluid after valve in oil pipe 202 is through the 5th magnetic valve 23 Oil inlet 23P and hydraulic fluid port 23A the control mouth 15X fuel feeding of the first guiding valve 15 is at the 2nd valve position, its first hydraulic fluid port 15A The second hydraulic fluid port 15B connects drain tap 15T simultaneously for cut-off cut-off, and the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 is slided by first The second hydraulic fluid port 15B and drain tap 15T drainings of valve 15, the first magnetic valve 19 to be powered and end its drain tap 19T in the 2nd valve position The hydraulic fluid port 19A of oil inlet 19P connections simultaneously, fluid after valve in oil pipe 202 through the first magnetic valve 19 oil inlet 19P and hydraulic fluid port 19A is to the rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, when the piston of the first two-way cylinder 11 is moved to middle position N, first The power-off of magnetic valve 19 makes its oil inlet 19P end hydraulic fluid port 19A connection drain taps 19T, the 5th magnetic valve 23 simultaneously in the 1st valve position Power-off makes its oil inlet 23P end the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, makes the nothing of the first two-way cylinder 11 Rod cavity hydraulic fluid port 11A and rod chamber hydraulic fluid port 11B is simultaneously in draining state so that its piston rest is in middle position N.

When changing to D1 gears by D2 gears, the first magnetic valve 19 is powered and its drain tap 19T is ended while oil-feed in the 2nd valve position Mouth 19P connection hydraulic fluid port 19A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 19P and hydraulic fluid port 19A pairs of the first magnetic valve 19 The rod chamber hydraulic fluid port 11B fuel feeding of the first two-way cylinder 11, oil inlet 19P and hydraulic fluid port 19A, the first guiding valve through the first magnetic valve 19 15 the first hydraulic fluid port 15A and the second hydraulic fluid port 15B makes the first two-way oil to the rodless cavity hydraulic fluid port 11A fuel feeding of the first two-way cylinder 11 The piston of cylinder moves to right position and realizes that the gearshift of D1 gears is preset；Then, the power-off of the first magnetic valve 19 makes its oil inlet in the 1st valve position 19P cut-offs hydraulic fluid port 19A connections simultaneously drain tap 19T, the rod chamber hydraulic fluid port 11B and rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 Its piston rest is set to be kept off in right position D1 in draining state simultaneously；Afterwards, the power-off of the 7th magnetic valve 25 enters it in the 1st valve position The hydraulic fluid port 25P cut-offs drain tap 25T of hydraulic fluid port 25A connections simultaneously, the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is by the 7th magnetic valve 25 Hydraulic fluid port 25A and drain tap 25T drainings, make its piston move to left position N and interrupt forward gear D2 to be driven；Hereafter, the 6th magnetic valve 24 leads to Electricity makes its drain tap 24T end the hydraulic fluid port 25A of oil inlet 24P connections simultaneously in the 2nd valve position, the fluid warp after valve in oil pipe 202 The oil inlet 24P and hydraulic fluid port 24A of the 6th magnetic valve 24 make its piston move to the right side hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26 Position is driven so as to realize forward gear D1；Finally, the second magnetic valve 20 is powered and its drain tap 20T is ended simultaneously in the 2nd valve position Oil inlet 20P connects hydraulic fluid port 20A, and the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 20P and hydraulic fluid port of the second magnetic valve 20 Rod chamber hydraulic fluid port 12B fuel feeding, oil inlet 20P and hydraulic fluid port 20A through second magnetic valve 20, of the 20A to the second two-way cylinder 12 The first hydraulic fluid port 16A and the second hydraulic fluid port 16B of two guiding valves 16 make second to the rodless cavity hydraulic fluid port 12A fuel feeding of the second two-way cylinder 12 When the piston of two-way cylinder moves to middle position N, the power-off of the second magnetic valve 20 makes its oil inlet 20P end oil simultaneously in the 1st valve position Mouth 20A connection drain tap 20T, make the rodless cavity hydraulic fluid port 12A and rod chamber hydraulic fluid port 12B of the second two-way cylinder 12 simultaneously in draining State, makes its piston rest in middle position N.

When changing to D3 gears by D2 gears, the 5th magnetic valve 23 is powered and its drain tap 23T is ended while oil-feed in the 2nd valve position Mouth 23P connection hydraulic fluid port 23A, the fluid after valve in oil pipe 202 is through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 to first The control mouth 15X fuel feeding of guiding valve 15 is at the 2nd valve position, its first hydraulic fluid port 15A cut-offs draining of the second hydraulic fluid port 15B connections simultaneously Mouthful 15T, the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 are let out by the second hydraulic fluid port 15B and drain tap 15T of the first guiding valve 15 Oil；Then, the first magnetic valve 19 is powered and its drain tap 19T is ended the hydraulic fluid port 19A of oil inlet 19P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 19P and hydraulic fluid port 19A of the first magnetic valve 19 to the rod chamber of the first two-way cylinder 11 Hydraulic fluid port 11B fuel feeding, makes the piston of the first two-way cylinder 11 move to left position D3, realizes that the gear of D3 gears is preset；Then, the first electromagnetism The power-off of valve 19 makes its oil inlet 19P end the drain tap 19T of hydraulic fluid port 19A connections simultaneously in the 1st valve position, and the 5th magnetic valve 23 is powered off Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, make the rodless cavity of the first two-way cylinder 11 Hydraulic fluid port 11A and rod chamber hydraulic fluid port 11B is simultaneously in draining state so that its piston rest is in left position D3；Afterwards, the 7th electromagnetism The power-off of valve 25 makes its oil inlet 25P end the drain tap 25T of hydraulic fluid port 25A connections simultaneously in the 1st valve position, the second unidirectional oil cylinder 27 Hydraulic fluid port 27A makes its piston move to left position N, interrupts forward gear D2 by the hydraulic fluid port 25A and drain tap 25T drainings of the 7th magnetic valve 25 Transmission；Hereafter, the 6th magnetic valve 24 is powered and its drain tap 24T is ended the hydraulic fluid port of oil inlet 24P connections simultaneously in the 2nd valve position 24A, fluid after valve in oil pipe 202 is through the oil inlet 24P and hydraulic fluid port 24A of the 6th magnetic valve 24 to the oil of the first unidirectional oil cylinder 26 Mouth 26A fuel feeding, makes its piston move to right position so as to realize that forward gear D3 is driven；Finally, the second magnetic valve 20 is powered and is in the 2nd valve Position makes its drain tap 20T end the hydraulic fluid port 20A of oil inlet 20P connections simultaneously, and the fluid after valve in oil pipe 202 is simultaneously through the second electromagnetism The oil inlet 20P and hydraulic fluid port 20A of valve 20 are to the rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, through the second magnetic valve 20 Oil inlet 20P and hydraulic fluid port 20A, the first hydraulic fluid port 16A of the second guiding valve 16 and the second hydraulic fluid port 16B are to the second two-way cylinder 12 without bar Chamber hydraulic fluid port 12A fuel feeding, when the piston of the second two-way cylinder 12 is moved to middle position N, the power-off of the second magnetic valve 20 makes in the 1st valve position Its oil inlet 20P cut-offs drain tap 20T of hydraulic fluid port 20A connections simultaneously, makes the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and has bar Chamber hydraulic fluid port 12B is simultaneously in draining state so that its piston rest is in middle position N.

When changing to D2 gears by D3 gears, the 5th magnetic valve 23 is powered and its drain tap 23T is ended while oil-feed in the 2nd valve position Mouth 23P connection hydraulic fluid port 23A, the fluid after valve in oil pipe 202 is through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 to second The control mouth 16X fuel feeding of guiding valve 16 is at the 2nd valve position, its first hydraulic fluid port 16A cut-offs draining of the second hydraulic fluid port 16B connections simultaneously Mouthful 16T, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 are let out by the second hydraulic fluid port 16B and drain tap 16T of the second guiding valve 16 Oil；Then, the second magnetic valve 20 is powered and its drain tap 20T is ended the hydraulic fluid port 20A of oil inlet 20P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 20P and hydraulic fluid port 20A of the second magnetic valve 20 to the rod chamber of the second two-way cylinder 12 Hydraulic fluid port 12B fuel feeding, makes the piston of the second two-way cylinder 12 move to left position, realizes that the gear of D2 gears is preset；Then, the second magnetic valve 20 power-off make its oil inlet 20P end the drain tap 20T of hydraulic fluid port 20A connections simultaneously in the 1st valve position, at the power-off of the 5th magnetic valve 23 Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, make the rodless cavity oil of the second two-way cylinder 12 Mouth 12A and rod chamber hydraulic fluid port 12B is simultaneously in draining state so that its piston rest is in left position D2；Afterwards, the 6th magnetic valve 24 power-off make its oil inlet 24P end the drain tap 24T of hydraulic fluid port 24A connections simultaneously, the oil of the first unidirectional oil cylinder 26 in the 1st valve position Mouth 26A passes through hydraulic fluid port 24A and drain tap the 24T draining of the 6th magnetic valve 24, its piston is moved to left position N interruption forward gears D3 biographies It is dynamic；Hereafter, the 7th magnetic valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port 25A of oil inlet 25P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 to the hydraulic fluid port of the second unidirectional oil cylinder 27 27A fuel feeding, makes its piston move to right position so as to realize that forward gear D2 is driven；Finally, the first magnetic valve 19 is powered in the 2nd valve position Its drain tap 19T is set to end the hydraulic fluid port A of oil inlet P connection simultaneously, the fluid after valve in oil pipe 202 is simultaneously through the first magnetic valve 19 Rod chamber hydraulic fluid port 11B fuel feeding, oil inlets through first magnetic valve 19 of the oil inlet 19P and hydraulic fluid port 19A to the first two-way cylinder 11 The rodless cavity hydraulic fluid port 11A of 19P and hydraulic fluid port 19A, the first hydraulic fluid port A of the first guiding valve 15 and the second hydraulic fluid port B to the first two-way cylinder 11 Fuel feeding, when the piston of the first two-way cylinder 11 is moved to middle position N, the power-off of the first magnetic valve 19 makes its oil inlet in the 1st valve position The 19P cut-offs drain tap 19T of hydraulic fluid port 19A connections simultaneously, makes the rod chamber hydraulic fluid port 11B and rodless cavity hydraulic fluid port of the first two-way cylinder 11 11A is simultaneously in draining state so that its piston rest is in middle position N.

When changing to D4 gears by D3 gears, the second magnetic valve 20 is powered and its drain tap 20T is ended while oil-feed in the 2nd valve position Mouth 20P connection hydraulic fluid port 20A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 20P and hydraulic fluid port 20A pairs of the second magnetic valve 20 The rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, oil inlet 20P and hydraulic fluid port A through the second magnetic valve 20, the second guiding valve 16 The first hydraulic fluid port 16A 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 second two-way cylinder 12 piston moves to right position D4, realizes that the gear of D4 gears is preset；Then, the power-off of the second magnetic valve 20 enters it in the 1st valve position The hydraulic fluid port 20P cut-offs drain tap 20T of hydraulic fluid port 20A connections simultaneously, makes the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 and rodless cavity oil Mouth 12B is simultaneously in draining state so that its piston rest is in right position D4；Then, the power-off of the 6th magnetic valve 24 is in the 1st valve Position makes its oil inlet 24P end the drain tap 24T of hydraulic fluid port 24A connections simultaneously, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 is by the 6th electricity The hydraulic fluid port 24A and drain tap 24T drainings of magnet valve 24 make its piston move to left position interruption forward gear D3 transmissions；Afterwards, the 7th electricity Magnet valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port 25A of oil inlet 25P connections simultaneously in the 2nd valve position, after valve in oil pipe 202 Fluid through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27, it is lived Plug moves to right position so as to realize that forward gear D4 is driven；Finally, the first magnetic valve 19 to be powered and make its drain tap 19T in the 2nd valve position The cut-off hydraulic fluid port 19A of oil inlet 19P connections simultaneously, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 19P of the first magnetic valve 19 With rod chamber hydraulic fluid port 11B fuel feeding of the hydraulic fluid port 19A to the first two-way cylinder 11, oil inlet 19P and hydraulic fluid port through the first magnetic valve 19 19A, the first hydraulic fluid port 15A of 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, When the piston of the first two-way cylinder 11 is moved to middle position N, the power-off of the first magnetic valve 19 cuts its oil inlet 19P in the 1st valve position Only the drain tap 19T of hydraulic fluid port 19A connections simultaneously, makes the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 and rodless cavity hydraulic fluid port 11B simultaneously In draining state so that its piston rest is in middle position N.

When changing to D3 gears by D4 gears, the 5th magnetic valve 23 is powered and its drain tap 23T is ended while oil-feed in the 2nd valve position Mouth 23P connection hydraulic fluid port 23A, the fluid after valve in oil pipe 202 is through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 to first The control mouth 15X fuel feeding of guiding valve 15 is at the 2nd valve position, its first hydraulic fluid port 15A cut-offs draining of the second hydraulic fluid port 15B connections simultaneously Mouthful 15T, the rodless cavity hydraulic fluid port 11A of the first two-way cylinder 11 are let out by the second hydraulic fluid port 15B and drain tap 15T of the first guiding valve 15 Oil；Then, the first magnetic valve 19 is powered and its drain tap 19T is ended the hydraulic fluid port 19A of oil inlet 19P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 19P and hydraulic fluid port 19A of the first magnetic valve 19 to the rod chamber of the first two-way cylinder 11 Hydraulic fluid port 11B fuel feeding, makes the piston of the first two-way cylinder 11 move to left position D3, realizes that the gear of D3 gears is preset；Then, the first electromagnetism The power-off of valve 19 makes its oil inlet 19P end the drain tap 19T of hydraulic fluid port 19A connections simultaneously in the 1st valve position, and the 5th magnetic valve 23 is powered off Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, make the rodless cavity of the first two-way cylinder 11 Hydraulic fluid port 11A and rodless cavity hydraulic fluid port 11B is simultaneously in draining state so that its piston rest is in left position D3；Afterwards, the 7th electromagnetism The power-off of valve 25 makes its oil inlet 25P end the drain tap 25T of hydraulic fluid port 25A connections simultaneously in the 1st valve position, the second unidirectional oil cylinder 27 Hydraulic fluid port 27A makes its piston move to left position interruption forward gear D4 biographies by the hydraulic fluid port 25A and drain tap 25T drainings of the 7th magnetic valve 25 It is dynamic；Hereafter, the 6th magnetic valve 24 is powered and its drain tap 24T is ended the hydraulic fluid port 24A of oil inlet 24P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 24P and hydraulic fluid port 24A of the 6th magnetic valve 24 to the hydraulic fluid port of the first unidirectional oil cylinder 26 26A fuel feeding, makes its piston move to right position so as to realize that forward gear D3 is driven；Finally, the 5th magnetic valve 23 is powered in the 2nd valve position Its drain tap 23T is set to end the hydraulic fluid port 23A of oil inlet 23P connections simultaneously, the fluid after valve in oil pipe 202 is through the 5th magnetic valve 23 Oil inlet 23P and hydraulic fluid port 23A is at the 2nd valve position, its first hydraulic fluid port 16A to the control mouth 16X fuel feeding of the second guiding valve 16 and cuts Only the second hydraulic fluid port 16B connects drain tap 16T simultaneously, and the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 is by the second guiding valve 16 Second hydraulic fluid port 16B and drain tap 16T drainings, the second magnetic valve 20 are powered and its drain tap 20T is ended while entering in the 2nd valve position Hydraulic fluid port 20P connects hydraulic fluid port 20A, and fluid after valve in oil pipe 202 is through the oil inlet 20P and hydraulic fluid port 20A of the second magnetic valve 20 to the The rod chamber hydraulic fluid port 12B fuel feeding of two two-way cylinders 12, when the piston of the second two-way cylinder 12 is moved to middle position N, the second magnetic valve 20 power-off make its oil inlet 20P end the drain tap 20T of hydraulic fluid port 20A connections simultaneously in the 1st valve position, at the power-off of the 5th magnetic valve 23 Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, make the rodless cavity oil of the second two-way cylinder 12 Mouth 12A and rodless cavity hydraulic fluid port 12B is simultaneously in draining state so that its piston rest is in N.

When changing to D5 gears by D4 gears, the 3rd magnetic valve 21 is powered and its drain tap 21T is ended while oil-feed in the 2nd valve position Mouth 21P connection hydraulic fluid port 21A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 21P and hydraulic fluid port 21A pairs of the 3rd magnetic valve 21 The rod chamber hydraulic fluid port 13B fuel feeding of the 3rd two-way cylinder 13, oil inlet 21P and hydraulic fluid port 21A, the 3rd guiding valve through the 3rd magnetic valve 21 17 the first hydraulic fluid port 17A and the second hydraulic fluid port 17B makes the 3rd two-way oil to the rodless cavity hydraulic fluid port 13A fuel feeding of the 3rd two-way cylinder 13 The piston of cylinder 13 moves to right position D5, realizes that the gear of D5 gears is preset；Then, the power-off of the 3rd magnetic valve 21 makes it in the 1st valve position The oil inlet 21P cut-offs drain tap 21T of hydraulic fluid port 21A connections simultaneously, makes the rodless cavity hydraulic fluid port A of the 3rd two-way cylinder 13 and rodless cavity oil Mouth B is simultaneously in draining state so that its piston rest is in right position；Then, the power-off of the 7th magnetic valve 25 is in the 1st valve position, enters Hydraulic fluid port P cut-offs hydraulic fluid port A connections simultaneously drain tap T, the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 pass through the hydraulic fluid port of the 7th magnetic valve 25 25A and drain tap 25T drainings, make its piston move to left position N and interrupt forward gear D4 to be driven；Afterwards, at the energization of the 6th magnetic valve 24 Its drain tap 24T is set to end the hydraulic fluid port 24A of oil inlet 24P connections simultaneously in the 2nd valve position, the fluid after valve in oil pipe 202 is through the 6th The oil inlet 24P and hydraulic fluid port 24A of magnetic valve 24 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26, make its piston move to right position from And realize forward gear D5 and be driven；Hereafter, the 5th magnetic valve 23 is powered and its drain tap 23T is ended oil-feed simultaneously in the 2nd valve position Mouth 23P connection hydraulic fluid port 23A, the fluid after valve in oil pipe 202 is through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 to second The control mouth 16X fuel feeding of guiding valve 16 is at the 2nd valve position, its first hydraulic fluid port 16A cut-offs draining of the second hydraulic fluid port 16B connections simultaneously Mouthful 16T, the rodless cavity hydraulic fluid port 12A of the second two-way cylinder 12 are let out by the second hydraulic fluid port 16B and drain tap 16T of the second guiding valve 16 Oil；Finally, the second magnetic valve 20 is powered and its drain tap 20T is ended the hydraulic fluid port 20A of oil inlet 20P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 20P and hydraulic fluid port 20A of the second magnetic valve 20 to the rod chamber of the second two-way cylinder 12 Hydraulic fluid port 12B fuel feeding, when the piston of the second two-way cylinder 12 is moved to middle N, the power-off of the second magnetic valve 20 makes it in the 1st valve position The oil inlet 20P cut-offs drain tap 20T of hydraulic fluid port 20A connections simultaneously, the power-off of the 5th magnetic valve 23 makes its oil inlet in the 1st valve position The 23P cut-offs drain tap 23T of hydraulic fluid port 23A connections simultaneously, makes the rodless cavity hydraulic fluid port A and rodless cavity hydraulic fluid port B of the second two-way cylinder 12 same When in draining state so that its piston rest is in middle position N.

When changing to D4 gears by D5 gears, the second magnetic valve 20 is powered and its drain tap 20T is ended while oil-feed in the 2nd valve position Mouth 20P connection hydraulic fluid port 20A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 20P and hydraulic fluid port 20A pairs of the second magnetic valve 20 The rod chamber hydraulic fluid port 12B fuel feeding of the second two-way cylinder 12, oil inlet 20P and hydraulic fluid port 20A, the second guiding valve through the second magnetic valve 20 16 the first hydraulic fluid port 16A and the second hydraulic fluid port 16B makes the second two-way oil to the rodless cavity hydraulic fluid port 12A fuel feeding of the second two-way cylinder 12 The piston of cylinder 12 moves to right position D4, realizes that the gear of D4 gears is preset；Then, the power-off of the second magnetic valve 20 makes it in the 1st valve position The oil inlet 20P cut-offs drain tap 20T of hydraulic fluid port 20A connections simultaneously, makes the rodless cavity hydraulic fluid port 12A and rodless cavity of the second two-way cylinder 12 Hydraulic fluid port 12B is simultaneously in draining state so that its piston rest is in right position；Then, the power-off of the 6th magnetic valve 24 is in the 1st valve Position makes its oil inlet 24P end the drain tap 24T of hydraulic fluid port 24A connections simultaneously, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 is by the 6th electricity The hydraulic fluid port 24A and drain tap 24T drainings of magnet valve 24 make its piston move to left position interruption forward gear D5 transmissions；Afterwards, the 7th electromagnetism Valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port 25A of oil inlet 25P connections simultaneously in the 2nd valve position, after valve in oil pipe 202 Fluid, to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27, makes its piston through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 Right position is moved to so as to realize that forward gear D4 is driven；Hereafter, the 5th magnetic valve 23 to be powered and cut its drain tap 23T in the 2nd valve position The only hydraulic fluid port 23A of oil inlet 23P connections simultaneously, fluid after valve in oil pipe 202 through the 5th magnetic valve 23 oil inlet 23P and hydraulic fluid port 23A is at the 2nd valve position, its first hydraulic fluid port 17A cut-offs the second hydraulic fluid port simultaneously to the control mouth 17X fuel feeding of the 3rd guiding valve 17 17B connects 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 of the 3rd guiding valve 17 and lets out Hydraulic fluid port 17T drainings；Finally, the 3rd magnetic valve 21 to be powered and end its drain tap 21T in the 2nd valve position while oil inlet 21P connects Logical hydraulic fluid port 21A, the fluid after valve in oil pipe 202 is through the oil inlet 21P and hydraulic fluid port 21A of the 3rd magnetic valve 21 to the 3rd two-way cylinder 13 rod chamber hydraulic fluid port 13B fuel feeding, when the piston of the 3rd two-way cylinder 13 is moved to middle position N, the power-off of the 3rd magnetic valve 21 is in 1st valve position makes its oil inlet 21P end the drain tap 21T of hydraulic fluid port 21A connections simultaneously, and the power-off of the 5th magnetic valve 23 is in the 1st valve position Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously, make the rodless cavity hydraulic fluid port 13A and nothing of the 3rd two-way cylinder 13 Rod cavity hydraulic fluid port 13B is simultaneously in draining state so that its piston rest is in middle position N.

When changing to D6 gears by D5 gears, the 4th magnetic valve 22 is powered and its drain tap 22T is ended while oil-feed in the 2nd valve position Mouth 22P connection hydraulic fluid port 22A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 22P and hydraulic fluid port 22A pairs of the 4th magnetic valve 22 The rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, oil inlet 22P and hydraulic fluid port 22A, the 4th guiding valve through the 4th magnetic valve 22 18 the first hydraulic fluid port 18A and the second hydraulic fluid port 18B makes the 4th two-way oil to the rodless cavity hydraulic fluid port 14A fuel feeding of the 4th two-way cylinder 14 The piston of cylinder 12 moves to right position D6, realizes that the gear of D6 gears is preset；Then, the power-off of the 4th magnetic valve 22 makes it in the 1st valve position The oil inlet 22P cut-offs drain tap 22T of hydraulic fluid port 22A connections simultaneously, makes the rodless cavity hydraulic fluid port 14A and rodless cavity of the 4th two-way cylinder 14 Hydraulic fluid port 14B is simultaneously in draining state so that its piston rest is in right position D6；Then, the power-off of the 6th magnetic valve 24 is in the 1st Valve position makes its oil inlet 24P end the drain tap 24T of hydraulic fluid port 24A connections simultaneously, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 is by the 6th The hydraulic fluid port 24A and drain tap 24T drainings of magnetic valve 24 make its piston move to left position interruption forward gear D5 transmissions；Afterwards, the 7th electricity Magnet valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port 25A of oil inlet 25P connections simultaneously in the 2nd valve position, after valve in oil pipe 202 Fluid through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27, it is lived Plug moves to right position so as to realize that forward gear D6 is driven；Hereafter, the 5th magnetic valve 23 to be powered and make its drain tap 23T in the 2nd valve position The cut-off hydraulic fluid port 23A of oil inlet 23P connections simultaneously, fluid after valve in oil pipe 202 through the 5th magnetic valve 23 oil inlet 23P and oil Mouth 23A is at the 2nd valve position, its first hydraulic fluid port 17A cut-offs the second hydraulic fluid port simultaneously to the control mouth 17X fuel feeding of the 3rd guiding valve 17 17B connects 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 of the 3rd guiding valve 17 and lets out Hydraulic fluid port 17T drainings；Finally, the 3rd magnetic valve 21 to be powered and end its drain tap 21T in the 2nd valve position while oil inlet 21P connects Logical hydraulic fluid port 21A, the fluid after valve in oil pipe 202 is through the oil inlet 21P and hydraulic fluid port 21A of the 3rd magnetic valve 21 to the 3rd two-way cylinder 13 rod chamber hydraulic fluid port 13B fuel feeding, when the piston of the 3rd two-way cylinder 13 is moved to middle position N, the power-off of the 3rd magnetic valve 21 is in 1st valve position makes its oil inlet 21P end the drain tap 21T of hydraulic fluid port 21A connections simultaneously, and the power-off of the 5th magnetic valve 23 is in the 1st valve position Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously, make the rodless cavity hydraulic fluid port 13A and nothing of the 3rd two-way cylinder 13 Rod cavity hydraulic fluid port 13B is simultaneously in draining state so that its piston rest is in middle position N.

When changing to D5 gears by D6 gears, the 3rd magnetic valve 21 is powered and its drain tap 21T is ended while oil-feed in the 2nd valve position Mouth 21P connection hydraulic fluid port 21A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 21P and hydraulic fluid port 21A pairs of the 3rd magnetic valve 21 The rod chamber hydraulic fluid port 13B fuel feeding of the 3rd two-way cylinder 13, oil inlet 21P and hydraulic fluid port 21A, the 3rd guiding valve through the 3rd magnetic valve 21 17 the first hydraulic fluid port 17A and the second hydraulic fluid port 17B makes the 3rd two-way oil to the rodless cavity hydraulic fluid port 13A fuel feeding of the 3rd two-way cylinder 13 The piston of cylinder 13 moves to right position D5, realizes that the gear of D5 gears is preset；Then, the power-off of the 3rd magnetic valve 21 makes it in the 1st valve position The oil inlet 21P cut-offs drain tap 21T of hydraulic fluid port 21A connections simultaneously, makes the rodless cavity hydraulic fluid port 13A and rodless cavity of the 3rd two-way cylinder 13 Hydraulic fluid port 13B is simultaneously in draining state so that its piston rest is in right position D5；Then, the power-off of the 7th magnetic valve 25 is in the 1st Valve position makes its oil inlet 25P end the drain tap 25T of hydraulic fluid port 25A connections simultaneously, and the hydraulic fluid port 27A of the second unidirectional oil cylinder 27 is by the 7th The hydraulic fluid port 25A and drain tap 25T drainings of magnetic valve 25 make its piston move to left position N, interrupt forward gear D6 transmissions；Afterwards, the 6th Magnetic valve 24 is powered and its drain tap 24T is ended the hydraulic fluid port 24A of oil inlet 24P connections simultaneously, oil pipe 202 after valve in the 2nd valve position In fluid through the oil inlet 24P and hydraulic fluid port 24A of the 6th magnetic valve 24 to the hydraulic fluid port 26A fuel feeding of the first unidirectional oil cylinder 26, make it Piston moves to right position so as to realize that forward gear D5 is driven；Hereafter, the 5th magnetic valve 23 to be powered and make its drain tap in the 2nd valve position The 23T cut-offs hydraulic fluid port 23A of oil inlet 23P connections simultaneously, fluid after valve in oil pipe 202 through the 5th magnetic valve 23 oil inlet 23P The 2nd valve position, its first hydraulic fluid port 18A cut-offs are to the control mouth 18X fuel feeding of the 4th guiding valve 18 while second with hydraulic fluid port 23A Hydraulic fluid port 18B connects 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 of the 4th guiding valve 18 With drain tap 18T drainings；Finally, the 4th magnetic valve 22 is powered and its drain tap 22T is ended oil inlet simultaneously in the 2nd valve position 22P connects hydraulic fluid port 22A, and the fluid after valve in oil pipe 202 is through the oil inlet 22P and hydraulic fluid port 22A of the 4th magnetic valve 22 to the 4th pair To the rod chamber hydraulic fluid port 14B fuel feeding of oil cylinder 14, when the piston of the 4th two-way cylinder 14 is moved to middle position N, the 4th magnetic valve 22 breaks Electricity makes its oil inlet 22P end the drain tap 22T of hydraulic fluid port 22A connections simultaneously in the 1st valve position, and the power-off of the 5th magnetic valve 23 is in the 1 valve position makes its oil inlet 23P end the drain tap 23T of hydraulic fluid port 23A connections simultaneously, makes the rodless cavity hydraulic fluid port of the 4th two-way cylinder 14 14A and rodless cavity hydraulic fluid port 14B is simultaneously in draining state so that its piston rest is in N.

When changing to D7 gears by D6 gears, the 5th magnetic valve 23 is powered and its drain tap 23T is ended while oil-feed in the 2nd valve position Mouth 23P connection hydraulic fluid port 23A, the fluid after valve in oil pipe 202 is through the oil inlet 23P and hydraulic fluid port 23A of the 5th magnetic valve 23 to the 3rd The control mouth 17X fuel feeding of guiding valve 17 is at the 2nd valve position, its first hydraulic fluid port 17A cut-offs draining of the second hydraulic fluid port 17B connections simultaneously Mouthful 17T, the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 are let out by the second hydraulic fluid port 17B and drain tap 17T of the 3rd guiding valve 17 Oil；Then, the 3rd magnetic valve 21 is powered and its drain tap 21T is ended the hydraulic fluid port 21A of oil inlet 21P connections simultaneously in the 2nd valve position, Fluid after valve in oil pipe 202 is through the oil inlet 21P and hydraulic fluid port 21A of the 3rd magnetic valve 21 to the rod chamber of the 3rd two-way cylinder 13 Hydraulic fluid port 13B fuel feeding, makes the piston of the 3rd two-way cylinder 13 move to left position D7, realizes that the gear of D7 gears is preset；Then, the 3rd electromagnetism The power-off of valve 21 makes its oil inlet 21P end the drain tap 21T of hydraulic fluid port 21A connections simultaneously in the 1st valve position, and the 5th magnetic valve 23 is powered off Its oil inlet 23P is ended the drain tap 23T of hydraulic fluid port 23A connections simultaneously in the 1st valve position, make the rodless cavity of the 3rd two-way cylinder 13 Hydraulic fluid port 13A and rodless cavity hydraulic fluid port 13B is simultaneously in draining state so that its piston rest is in left position D7；Afterwards, the 7th electromagnetism The power-off of valve 25 makes its oil inlet 25P end the drain tap 25T of hydraulic fluid port 25A connections simultaneously in the 1st valve position, the second unidirectional oil cylinder 27 Hydraulic fluid port 27A makes its piston move to left position N, interrupts forward gear D6 by the hydraulic fluid port 25A and drain tap 25T drainings of the 7th magnetic valve 25 Transmission；Hereafter, the 6th magnetic valve 24 is powered and its drain tap 24T is ended the hydraulic fluid port of oil inlet 24P connections simultaneously in the 2nd valve position 24A, fluid after valve in oil pipe 202 is through the oil inlet 24P and hydraulic fluid port 24A of the 6th magnetic valve 24 to the oil of the first unidirectional oil cylinder 26 Mouth 26A fuel feeding, makes its piston move to right position so as to realize that forward gear D7 is driven；Finally, the 5th magnetic valve 23 is powered and is in the 2nd valve Position makes its drain tap 23T end the hydraulic fluid port 23A of oil inlet 23P connections simultaneously, and the fluid after valve in oil pipe 202 is through the 5th magnetic valve 23 Oil inlet 23P and hydraulic fluid port 23A the control mouth 18X fuel feeding of the 4th guiding valve 18 is at the 2nd valve position, its hydraulic fluid port 18A cut-off Hydraulic fluid port 18B connections simultaneously drain tap 18T, the rodless cavity hydraulic fluid port 14A of the 4th two-way cylinder 14 pass through the hydraulic fluid port 18B of the 4th guiding valve 18 With drain tap 18T drainings, the energization of the 4th magnetic valve 22 ends its drain tap 22T in the 2nd valve position while oil inlet 22P connections Hydraulic fluid port 22A, the fluid after valve in oil pipe 202 is through the oil inlet 22P and hydraulic fluid port 22A of the 4th magnetic valve 22 to the 4th two-way cylinder 14 Rod chamber hydraulic fluid port 14B fuel feeding, when the piston of the 4th two-way cylinder 14 is moved to middle position N, the 4th magnetic valve 22 power-off be in the 1st Valve position makes its oil inlet 22P end the drain tap 22T of hydraulic fluid port 22A connections simultaneously, and the power-off of the 5th magnetic valve 23 makes it in the 1st valve position The oil inlet 23P cut-offs drain tap 23T of hydraulic fluid port 23A connections simultaneously, makes the rodless cavity hydraulic fluid port 14A and rodless cavity of the 4th two-way cylinder 14 Hydraulic fluid port 14B is simultaneously in draining state so that its piston rest is in middle position N.

When changing to D6 gears by D7 gears, the 4th magnetic valve 22 is powered and its drain tap 22T is ended while oil-feed in the 2nd valve position Mouth 22P connection hydraulic fluid port 22A, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 22P and hydraulic fluid port 22A pairs of the 4th magnetic valve 22 The rod chamber hydraulic fluid port 14B fuel feeding of the 4th two-way cylinder 14, oil inlet 22P and hydraulic fluid port 22A, the 4th guiding valve through the 4th magnetic valve 22 18 the first hydraulic fluid port 18A and the second hydraulic fluid port 18B makes the 4th two-way oil to the rodless cavity hydraulic fluid port 14A fuel feeding of the 4th two-way cylinder 14 The piston of cylinder 14 moves to right position D6, realizes that the gear of D6 gears is preset；Then, the power-off of the 4th magnetic valve 22 makes it in the 1st valve position The oil inlet 22P cut-offs drain tap 22T of hydraulic fluid port 22A connections simultaneously, makes the rodless cavity hydraulic fluid port 14A and rodless cavity of the 4th two-way cylinder 14 Hydraulic fluid port 14B is simultaneously in draining state so that its piston rest is in right position D6；Then, the power-off of the 6th magnetic valve 24 is in the 1st Valve position makes its oil inlet 24P end the drain tap 24T of hydraulic fluid port 24A connections simultaneously, and the hydraulic fluid port 26A of the first unidirectional oil cylinder 26 is by the 6th The hydraulic fluid port 24A and drain tap 24T drainings of magnetic valve 24 make its piston move to left position N interruption forward gears D7 transmissions；Afterwards, the 7th electricity Magnet valve 25 is powered and its drain tap 25T is ended the hydraulic fluid port 25A of oil inlet 25P connections simultaneously in the 2nd valve position, after valve in oil pipe 202 Fluid through the oil inlet 25P and hydraulic fluid port 25A of the 7th magnetic valve 25 to the hydraulic fluid port 27A fuel feeding of the second unidirectional oil cylinder 27, it is lived Plug moves to right position so as to realize that forward gear D6 is driven；Hereafter, the 3rd magnetic valve 21 to be powered and make its drain tap 21T in the 2nd valve position The cut-off hydraulic fluid port 21A of oil inlet 21P connections simultaneously, the fluid after valve in oil pipe 202 is simultaneously through the oil inlet 21P of the 3rd magnetic valve 21 With hydraulic fluid port 21A to rod chamber hydraulic fluid port 13B fuel feeding, the oil inlet 21P and hydraulic fluid port through the 3rd magnetic valve 21 of the 3rd two-way cylinder 13 21A, the first hydraulic fluid port 17A of the 3rd guiding valve 17 and the second hydraulic fluid port 17B to the rodless cavity hydraulic fluid port 12A fuel feeding of the 3rd two-way cylinder 13, When the piston of the 3rd two-way cylinder 13 is moved to middle position N, the power-off of the 3rd magnetic valve 21 cuts its oil inlet 21P in the 1st valve position Only the drain tap 21T of hydraulic fluid port 21A connections simultaneously, makes the rodless cavity hydraulic fluid port 13A of the 3rd two-way cylinder 13 and rodless cavity hydraulic fluid port 13B simultaneously In draining state so that its piston rest is in N.

Claims

1. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system, it is characterised in that：

Including electrodynamic pump (30), motor (31), check valve (32), overflow 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 processed, second clutch control unit and the 5th magnetic valve (23)；

First shift control unit is connected successively by the first two-way cylinder (11), the first guiding valve (15) and the first magnetic valve (19) Connect composition, control the first forward gear D1's and the 3rd forward gear D3 puts into gear or move back gear；Second shift control unit is two-way by second Oil cylinder (12), the second guiding valve (16) and the second magnetic valve (20) are sequentially connected composition, and the second forward gear D2 of control and the 4th advances Gear D4's puts into gear or moves back gear；3rd shift control unit is by the 3rd two-way cylinder (13), the 3rd guiding valve (17) and the 3rd magnetic valve (21) it is sequentially connected composition, control the 7th forward gear D7's and the 5th forward gear D5 puts into gear or move back gear；4th shift control unit It is sequentially connected and is constituted by the 4th two-way cylinder (14), the 4th guiding valve (18) and the 4th magnetic valve (22), control is reversed gear before R and the 6th Enter to keep off putting into gear or moving back gear for D6；

The first clutch control unit is in series by the first unidirectional oil cylinder (26) and the 6th magnetic valve (24), control first Forward gear D1, the 3rd forward gear D3, the power of the 5th forward gear D5 and the 7th forward gear D7 are combined or interrupted；Second clutch Device control unit is in series by the second unidirectional oil cylinder (27) and the 7th magnetic valve (25), before the second forward gear D2 of control, the 4th Enter to keep off D4, the power of the 6th forward gear D6 and R that reverses gear is combined or interrupted；

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 control function, real Existing 7 forward gears and 1 speed Control reversed gear；

The hydraulic fluid port 11A of the rodless cavity of first two-way cylinder (11) connects the second hydraulic fluid port 15B of the first guiding valve (15), has bar The hydraulic fluid port 11B in chamber connects the first hydraulic fluid port 15A of the first guiding valve (15) and the hydraulic fluid port 19A of the first magnetic valve (19) simultaneously；It is described The drain tap 15T of the first guiding valve (15) connects the hydraulic fluid port that oil groove (28), control port 15X connect the 5th magnetic valve (23) 23A；The oil inlet 19P of first magnetic valve (19) connects oil pipe (202) after valve, drain tap 19T and connects oil groove (28)； The oil inlet 23P of the 5th magnetic valve (23) connects oil pipe (202) after valve, drain tap 23T and connects oil groove (28)；When right The rodless cavity and rod chamber of the first two-way cylinder (11) simultaneously fuel feeding when its piston is moved to the gear that forward gear D1 is realized in right position It is preset, rodless cavity draining when the first two-way cylinder (11), while during to its rod chamber fuel feeding, making its piston move to left position and realizing The gear of forward gear D3 is preset, when rodless cavity and the rod chamber draining simultaneously of the first two-way cylinder (11), makes its piston rest In present position, neutral N is realized when the piston of the first two-way cylinder (11) moves to centre position；

The hydraulic fluid port 12A of the rodless cavity of second two-way cylinder (12) connects the second hydraulic fluid port 16B of the second guiding valve (16), has bar The hydraulic fluid port 12B in chamber connects the first hydraulic fluid port 16A of the second guiding valve (16) and the hydraulic fluid port 20A of the second magnetic valve (20) simultaneously；It is described The drain tap 16T of the second guiding valve (16) connects the hydraulic fluid port that oil groove (28), control port 16X connect the 5th magnetic valve (23) 23A；The oil inlet 20P of second magnetic valve (20) connects oil pipe (202) after valve, drain tap 20T and connects oil groove (28)； When the fuel feeding simultaneously of the rodless cavity and rod chamber to the second two-way cylinder (12), its piston is moved to right position and realize forward gear D4's Gear is preset, rodless cavity draining when the second two-way cylinder (12), while during to its rod chamber fuel feeding, making its piston move to left position Realize that the gear of forward gear D2 is preset, when rodless cavity and the rod chamber draining simultaneously of the second two-way cylinder (12), make its piston Present position is still in, neutral N is realized when the piston of the second two-way cylinder (12) moves to centre position；

The hydraulic fluid port 13A of the rodless cavity of the 3rd two-way cylinder (13) connects the second hydraulic fluid port 17B of the 3rd guiding valve (17), has bar The hydraulic fluid port 13B in chamber connects the first hydraulic fluid port 17A of the 3rd guiding valve (17) and the hydraulic fluid port 21A of the 3rd magnetic valve (21) simultaneously；It is described The drain tap 17T of the 3rd guiding valve (17) connects the hydraulic fluid port that oil groove (28), control port 17X connect the 5th magnetic valve (23) 23A；The oil inlet 21P of the 3rd magnetic valve (21) connects oil pipe (202) after valve, drain tap 21T and connects oil groove (28)； When the fuel feeding simultaneously of the rodless cavity and rod chamber to the 3rd two-way cylinder (13), its piston is moved to right position and realize forward gear D5's Gear is preset, rodless cavity draining when the 3rd two-way cylinder (13), while during to its rod chamber fuel feeding, making its piston move to left position Realize that the gear of forward gear D7 is preset, when rodless cavity and the rod chamber draining simultaneously of the 3rd two-way cylinder (13), make its piston Present position is still in, neutral N is realized when the piston of the 3rd two-way cylinder (13) moves to centre position；

The hydraulic fluid port 14A of the rodless cavity of the 4th two-way cylinder (14) connects the second hydraulic fluid port 18B of the 4th guiding valve (18), has bar The hydraulic fluid port 14B in chamber connects the first hydraulic fluid port 18A of the 4th guiding valve (18) and the hydraulic fluid port 22A of the 4th magnetic valve (22) simultaneously；It is described The drain tap 18T of the 4th guiding valve (18) connects the hydraulic fluid port that oil groove (28), control port 18X connect the 5th magnetic valve (23) 23A；The oil inlet 22P of the 4th magnetic valve (22) connects oil pipe (202) after valve, drain tap 22T and connects oil groove (28)； When the fuel feeding simultaneously of the rodless cavity and rod chamber to the 4th two-way cylinder (14), its piston is moved to right position and realize forward gear D6's Gear is preset, rodless cavity draining when the 4th two-way cylinder (14), while during to its rod chamber fuel feeding, making its piston move to left position Realization reverse gear R gear it is preset, when the 4th two-way cylinder (14) rodless cavity and rod chamber simultaneously draining when, make its piston rest In present position, neutral N is realized when the piston of the 4th two-way cylinder (14) moves to centre position；

The hydraulic fluid port 26A of the first unidirectional oil cylinder (26) connects the hydraulic fluid port 24A of the 6th magnetic valve (24)；6th magnetic valve (24) oil inlet 24P connects oil pipe (202) after valve, drain tap 24T and connects oil groove (28)；To the first unidirectional oil cylinder (26) During fuel feeding, its piston is set to move to the transmission that a certain gear in forward gear D1, D3, D5, D7 is realized in right position, the first unidirectional oil cylinder (26) During draining, make its piston that the transmission of a certain gear during forward gear D1, D3, D5, D7 are interrupted in left position is displaced downwardly in action of reset spring；

The hydraulic fluid port 27A of the second unidirectional oil cylinder (27) connects the hydraulic fluid port 25A of the 7th magnetic valve (25)；7th magnetic valve (25) oil inlet 25P connects oil pipe (202) after valve, drain tap 25T and connects oil groove (28)；To the second unidirectional oil cylinder (27) During fuel feeding, its piston is moved to right position and realize reversing gear the transmission of a certain gear in R or forward gear D2, D4, D6, the second unidirectional oil cylinder (27) during draining, its piston is made to be displaced downwardly to a certain gear during reverse gear R or forward gear D2, D4, D6 are interrupted in left position in action of reset spring The transmission of position；

The electrodynamic pump (30) is connected with motor (31) by motor shaft (EMZ), the first hydraulic fluid port 30A strings of electrodynamic pump (30) Join filter (29), the first hydraulic fluid port 29A of filter (29) connects oil groove (28)；Second hydraulic fluid port 30B of electrodynamic pump (30) connects First hydraulic fluid port 32A of logical check valve (32), the second hydraulic fluid port 32B of check valve (32) are by oil pipe (201) before valve while connecting overflow First hydraulic fluid port 33A of valve (33), the hydraulic fluid port 34P of oil pressure sensor (34), the hydraulic fluid port 35P of accumulator (35) and hand control valve (10) Oil inlet 10P；Check valve (32) conducting when pressure at the first hydraulic fluid port 32A of check valve (32) is more than its second hydraulic fluid port 32B, Check valve (32) cut-off when pressure at the first hydraulic fluid port 32A of check valve (32) is less than its second hydraulic fluid port 32B；Work as overflow valve (33) its first hydraulic fluid port 33A connects the second hydraulic fluid port 33B when the oil pressure at the first hydraulic fluid port 33A exceedes the oil pressure maximum of setting, Fluid before valve in oil pipe (201) flow to oil groove (28), makes valve through the first hydraulic fluid port 33A and the second hydraulic fluid port 33B of overflow valve (33) Oil pressure reduction in preceding oil pipe (201), oil pressure of the oil pressure less than or equal to setting at the first hydraulic fluid port 33A of overflow valve (33) Its first hydraulic fluid port 33A, the second hydraulic fluid port 33B end simultaneously during maximum；When oil pressure is less than the minimum work of system in oil pipe (201) before valve When making pressure, motor (31) work, when oil pressure is higher than system maximum working pressure in oil pipe (201) before valve, motor (31) stops Only work；The accumulator (35) is spring piston type energy storage means, the oil pipe before the internal pressure of accumulator (35) is less than valve (201) during pressure, oil pipe (201) is oil-filled to its by the hydraulic fluid port 35P of accumulator (35) before valve, when the inside of accumulator (35) Pressure is higher than during the pressure of oil pipe (201), accumulator (35) is by its hydraulic fluid port 35P to oil pipe before valve (201) fuel feeding before valve；It is described Hand control valve (10) with parking gear P, the R that reverses gear, tetra- valves of neutral N and forward gear D position, hand control valve (10) in parking keep off P when, Its oil inlet 10P connections hydraulic fluid port 10A, drain tap 10T cut-offs, in reverse gear R when, its oil inlet 10P connects hydraulic fluid port 10A, lets out Hydraulic fluid port 10T end, in neutral N when, its oil inlet 10P cut-off, hydraulic fluid port 10A connect drain tap 10T, in forward gear D When, its oil inlet 10P connection hydraulic fluid ports 10A, drain tap 10T cut-offs.

2. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system according to claim 1, its feature exists In：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 It is single pole two-way cylinder.

3. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system according to claim 1, its feature exists In：The first unidirectional oil cylinder (26) and the second unidirectional oil cylinder (27) are the annular one-way cylinder with back-moving spring.

4. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system according to claim 1, it is characterised in that： First magnetic valve (19), the second magnetic valve (20), the 3rd magnetic valve (21), the 4th magnetic valve (22) and the 5th magnetic valve (23) it is 23 three-way electromagnetic valves of switching mode, the 6th magnetic valve (24) and the 7th magnetic valve (25) are and are driven with pwm signal Dynamic 23 three-way electromagnetic valves of high speed switch type, and each magnetic valve is in respective 1st valve position, locates when being powered when power is off In respective 2nd valve position；First magnetic valve (19), the second magnetic valve (20), the 3rd magnetic valve (21), the 4th magnetic valve (22), 5th magnetic valve (23), the 6th magnetic valve (24) and the 7th magnetic valve (25) in different valves position when inter-communicational relationship be：

Its hydraulic fluid port 19A connection drain taps 19T, oil inlet 19P cut-offs when first magnetic valve (19) is in the 1st valve position, in the 2nd valve Its drain tap 19T cut-offs, oil inlet 19P connection hydraulic fluid ports 19A during position；

Its hydraulic fluid port 20A connection drain taps 20T, oil inlet 20P cut-offs when second magnetic valve (20) is in the 1st valve position, in the 2nd valve Its drain tap 20T cut-offs, oil inlet 20P connection hydraulic fluid ports 20A during position；

Its hydraulic fluid port 21A connection drain taps 21T, oil inlet 21P cut-offs when 3rd magnetic valve (21) is in the 1st valve position, in the 2nd valve Its drain tap 21T cut-offs, oil inlet 21P connection hydraulic fluid ports 21A during position；

Its hydraulic fluid port 22A connection drain taps 22T, oil inlet 22P cut-offs when 4th magnetic valve (22) is in the 1st valve position, in the 2nd valve Its drain tap 22T cut-offs, oil inlet 22P connection hydraulic fluid ports 22A during position；

Its hydraulic fluid port 23A connection drain taps 23T, oil inlet 23P cut-offs when 5th magnetic valve (23) is in the 1st valve position, in the 2nd valve Its drain tap 23T cut-offs, oil inlet 22P connection hydraulic fluid ports 23A during position；

Its hydraulic fluid port 24A connection drain taps 24T, oil inlet 24P cut-offs when 6th magnetic valve (24) is in the 1st valve position, in the 2nd valve Its drain tap 24T cut-offs, oil inlet 24P connection hydraulic fluid ports 24A during position；

Its hydraulic fluid port 25A connection drain taps 25T, oil inlet 25P cut-offs when 7th magnetic valve (25) is in the 1st valve position, in the 2nd valve Its drain tap 25T cut-offs, oil inlet 25P connection hydraulic fluid ports 25A during position.

5. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system according to claim 1, it is characterised in that： The electrodynamic pump (30) is valve plate-type volume impeller pump, or external gear rotary pump, or crescent gear pump, or internal messing Cycloid rotor pump.

6. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system according to claim 1, it is characterised in that： The motor (31) is the DC electromotor with brush that operating voltage is 8~32V, or the AC permanent magnet that operating voltage is 8~32V Brushless motor, or the direct current stepping motor that operating voltage is 8~32V.

7. a kind of 7 fast opposed type dual-clutch transmission electrohydraulic control system according to claim 1, it is characterised in that： The hand control valve (10) is 43 and leads to manual spool control valve.