CN205937792U

CN205937792U - Dual -clutch automatic transmission's hydraulic pressure shift control system

Info

Publication number: CN205937792U
Application number: CN201620728759.6U
Authority: CN
Inventors: 黄新志; 莫凡; 郭志方; 刘学武; 张安伟; 王开国
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2016-07-08
Filing date: 2016-07-08
Publication date: 2017-02-08
Anticipated expiration: 2026-07-08

Abstract

The utility model provides a dual -clutch automatic transmission's hydraulic pressure shift control system, including pressure control electromagnetic valve, flow control solenoid valve, first switch solenoid valve, the second switch solenoid valve, third switch solenoid valve, fourth switch solenoid valve, first gear bit switch valve, second gear ooff valve, third gear bit switch valve, fourth gear ooff valve, a shifting oil cylinder, the 2nd shifting oil cylinder, the 3rd shifting oil cylinder and fourth shifting oil cylinder, wherein four switch solenoid valves are controlled four gear ooff valves respectively and are commutated, four gear ooff valves are controlled four shifting oil cylinder respectively and are shifted. This embodiment adopts solenoid valve few as far as possible and guiding valve combination, realizes eight automatic gearbox gear -change control that keep off the position, has realized the dual control of shift gears pressure and flow in addition through pressure control electromagnetic valve and flow control solenoid valve, and messenger hydraulic system is more accurate to shifting gears process control, can realize the accurate control of the process of shifting gears better, and while the system is lighter, and control logic is more succinct.

Description

The hydraulic gear-shifting control system of double-clutch automatic gearbox

Technical field

This utility model is related to the technical field of automatic transmission, especially relates to a kind of double-clutch automatic gearbox Hydraulic gear-shifting control system.

Background technology

With scientific and technological progress, the mode that speed change realized by automobile is gradually developed towards fluid drive by hand gear, automatically Speed change is realized by automatic transmission.Wherein, double-clutch automatic gearbox due to having the advantages such as transmission efficiency height and Receive the welcome in market, in double-clutch automatic gearbox, employ two clutches, one of clutch is used for controlling very Number gear, and another clutch is used for controlling even number gear, by automatically switching thus completing to change between two clutches Gear program, therefore can achieve the power shifting of shift process, interrupts power in shift process, improves vehicle operation Comfortableness.

Automatic transmission, when realizing self shifter, needs this system parts of gear shifting actuating mechanism, and its effect is real Existing automatic gear change function, more employing fluid pressure type gear shifting actuating mechanism at present.Gearshift generally by be keyed to reference axis and Completing, the unilateral or bilateral of lock unit is provided with the gear that can provide different drive ratios to the lock unit rotating with, and holds in gearshift In the presence of row mechanism, lock unit is struck and moves in the axial direction and engaged with neighbouring gear, by gear be connected on axle from And realize the synchronization of gear and axle, thus exporting power.

Current double-clutch automatic gearbox is more to adopt eight gears (inclusion is reversed gear), and is controlled using hydraulic gear-shifting System is controlled to gear shifting actuating mechanism, to complete the gear shift operation of this eight gears.In prior art, all with as far as possible Realizing control of shifting gears, wherein most technical scheme is all based on Stress control it is impossible to essence for few electromagnetic valve and spool valve combinations The really precise control to realize shift process for the rate travel of control gear shifting actuating mechanism.

Utility model content

The purpose of this utility model is to provide a kind of hydraulic gear-shifting control system of double-clutch automatic gearbox, with logical Cross electromagnetic valve as few as possible and spool valve combinations, realize precise control in shift process for the gear shifting actuating mechanism, make system more Plus light, control logic is more succinct.

This utility model embodiment provides a kind of hydraulic gear-shifting control system of double-clutch automatic gearbox, and this hydraulic pressure changes Gear control system include electromagnetic pressure control valve, flow control electromagnetic valve, first switch electromagnetic valve, second switch electromagnetic valve, the Three switch electromagnetic valves, the 4th switch electromagnetic valve, the first driving switch valve, the second driving switch valve, third gear switch valve, the 4th Driving switch valve, the first shift cylinder, the second shift cylinder, the 3rd shift cylinder and the 4th shift cylinder, wherein this pressure The outlet controlling electromagnetic valve is connected with the entrance of this flow control electromagnetic valve, the outlet of this flow control electromagnetic valve and this first grade The entrance of bit switch valve, the entrance of this second driving switch valve, the entrance of this third gear switch valve and this fourth speed bit switch The entrance of valve connects, and the outlet of this first driving switch valve is connected with the oil pocket of this first shift cylinder, this second driving switch The outlet of valve is connected with the oil pocket of this second shift cylinder, the oil exporting with the 3rd shift cylinder of this third gear switch valve Chamber connects, and the outlet of this fourth speed bit switch valve is connected with the oil pocket of the 4th shift cylinder, the going out of this first switch electromagnetic valve Mouth is connected with the control end of this first driving switch valve, and this first driving switch valve is changed by this first switch solenoid valve control To the outlet of this second switch electromagnetic valve is connected with the control end of this second driving switch valve, and this second driving switch valve is by this Second switch solenoid valve control is commutated, and the outlet of the 3rd switch electromagnetic valve is with the control end of this third gear switch valve even Connect, this third gear switch valve by the 3rd switch electromagnetic valve control commutated, the outlet of the 4th switch electromagnetic valve with should The control end of fourth speed bit switch valve connects, and this fourth speed bit switch valve is commutated by the 4th switch electromagnetic valve control, should The entrance of electromagnetic pressure control valve, the entrance of this first switch electromagnetic valve, the entrance of this second switch electromagnetic valve, the 3rd switch The entrance of the entrance of electromagnetic valve and the 4th switch electromagnetic valve is all connected with working connection.

Further, this electromagnetic pressure control valve has entrance and exit, and this flow control electromagnetic valve has entrance and two Individual outlet, the entrance of this electromagnetic pressure control valve is connected with this working connection, the outlet of this electromagnetic pressure control valve and this flow control The entrance of electromagnetic valve processed is connected, and two outlets of this flow control electromagnetic valve are opened with this first driving switch valve, this second gear Close valve, this third gear switch valve and this fourth speed bit switch valve to be connected.

Further, this flow control electromagnetic valve can switch between the first working position and the second working position, this flow control When electromagnetic valve processed is in the first working position, during the entrance of this flow control electromagnetic valve is exported with the two of this flow control electromagnetic valve One of them connection；When this flow control electromagnetic valve is in the second working position, the entrance of this flow control electromagnetic valve and this stream Amount controls another connection in two outlets of electromagnetic valve.

Further, this first switch electromagnetic valve has entrance and exit, and this second switch electromagnetic valve has entrance and goes out Mouthful, the 3rd switch electromagnetic valve has entrance and exit, and the 4th switch electromagnetic valve has entrance and exit, and this first gear is opened Close valve have two entrances, two outlet and a control end, this second driving switch valve have two entrances, two outlet and One control end, this third gear switch valve has two entrances, two outlets and a control end, this fourth speed bit switch valve There is two entrances, two outlets and a control end, the entrance of this first switch electromagnetic valve, the entering of this second switch electromagnetic valve Mouth, the entrance of the 3rd switch electromagnetic valve are all connected with this working connection with the entrance of the 4th switch electromagnetic valve, this first switch The outlet of electromagnetic valve is connected with the control end of this first driving switch valve, the outlet of this second switch electromagnetic valve and this second gear The control end of switch valve is connected, and the outlet of the 3rd switch electromagnetic valve is connected with the control end of this third gear switch valve, and this The outlet of four switch electromagnetic valves is connected with the control end of this fourth speed bit switch valve, and the two entrances of this first driving switch valve are divided Be not connected with two outlets of this flow control electromagnetic valve, the two entrances of this second driving switch valve respectively with this flow-control Two outlets of electromagnetic valve are connected, and the two entrances of this third gear switch valve are gone out with two of this flow control electromagnetic valve respectively Mouth is connected, and the two entrances of this fourth speed bit switch valve are connected with two outlets of this flow control electromagnetic valve respectively, and this first Two outlets of driving switch valve are connected with two oil pockets of this first shift cylinder respectively, two of this second driving switch valve Outlet is connected with two oil pockets of this second shift cylinder respectively, and two of this third gear switch valve export respectively with the 3rd Two oil pockets of shift cylinder are connected, two outlet two oil with the 4th shift cylinder respectively of this fourth speed bit switch valve Chamber is connected.

Further, this electromagnetic pressure control valve is the Stress control proportional solenoid of side valve type, this flow-control electromagnetism Valve is the flow-control proportional solenoid of side valve type, and this first driving switch valve, this second driving switch valve, this third gear are opened Close valve and this fourth speed bit switch valve is the pilot operated directional control valve of side valve type.

Further, this hydraulic gear-shifting control system also include first clutch electromagnetic valve, second clutch electromagnetic valve and Clutch relief valve, this first clutch electromagnetic valve has entrance and outlet, and this second clutch electromagnetic valve has entrance and goes out Mouthful, the entrance of this first clutch electromagnetic valve is all connected with this working connection with the entrance of this second clutch electromagnetic valve, this clutch Device relief valve has two entrances, two outlets and a control end, the two entrances of this clutch relief valve respectively with this The outlet of one clutch solenoid valve is connected with the outlet of this second clutch electromagnetic valve, two outlets point of this clutch relief valve It is not connected with first clutch and second clutch, the two of which in this first switch electromagnetic valve to the 4th switch electromagnetic valve is opened The outlet closing electromagnetic valve is connected simultaneously to the control end of this clutch relief valve.

Further, this hydraulic gear-shifting control system also includes the 5th switch electromagnetic valve, park control valve and parking oil cylinder, 5th switch electromagnetic valve has entrance and exit, and this park control valve has entrance, two outlets and control end, and the 5th opens Close electromagnetic valve entrance be all connected with this working connection with the entrance of this park control valve, the outlet of the 5th switch electromagnetic valve and this The control end of park control valve is connected, and two outlets of this park control valve are connected with two oil pockets of this parking oil cylinder respectively.

Further, the two of which switch electromagnetic valve to the 4th switch electromagnetic valve for this first switch electromagnetic valve is integrated into The switch electromagnetic valve of one 3-position 4-way, two other in this first switch electromagnetic valve to the 4th switch electromagnetic valve switchs electromagnetism Valve is integrated into the switch electromagnetic valve of another 3-position 4-way.

Further, this hydraulic gear-shifting control system also includes second pressure control electromagnetic valve and working connection pressure is adjusted Valve, this second pressure controls electromagnetic valve to have entrance and exit, and this working connection pressure-regulating valve has entrance, two outlets and two Individual control end, this second pressure controls the entrance of electromagnetic valve to be connected with this working connection, and this second pressure controls the outlet of electromagnetic valve It is connected with the first control end of this working connection pressure-regulating valve, the entrance of this working connection pressure-regulating valve and the second control end are simultaneously It is connected with this working connection, the first outlet of this working connection pressure-regulating valve is connected with fuel tank, the of this working connection pressure-regulating valve Lubrication oil circuit is led in two outlets.

In this utility model embodiment, using electromagnetic valve as few as possible and spool valve combinations, realize the automatic of eight gears Shift of transmission controls, and passes through electromagnetic pressure control valve and flow control electromagnetic valve, is realizing shift of transmission control On the basis of it is achieved that gearshift pressure and flow two ore control, make hydraulic system to gearshift process control more accurate, can be more preferable Realize the precise control of shift process, reduce the use of guiding valve, system is more light, and control logic is more succinct simultaneously.

Described above is only the general introduction of technical solutions of the utility model, in order to better understand skill of the present utility model Art means, and being practiced according to the content of description, and in order to allow above and other purpose of the present utility model, feature Can become apparent with advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.

Brief description

Fig. 1 is the structure of the hydraulic gear-shifting control system of double-clutch automatic gearbox in this utility model first embodiment Schematic diagram.

Fig. 2 is the structure of the hydraulic gear-shifting control system of double-clutch automatic gearbox in this utility model second embodiment Schematic diagram.

Specific embodiment

For further illustrating that this utility model is to reach technological means and effect that predetermined utility model purpose is taken, Below in conjunction with accompanying drawing and preferred embodiment, this utility model is described in detail as follows.

This utility model embodiment provides a kind of hydraulic gear-shifting control system for double-clutch automatic gearbox, purpose It is, with electromagnetic valve as few as possible and spool valve combinations, the hydraulic gear-shifting control requirement of automatic transmission to be better achieved.

[first embodiment]

Fig. 1 is the structure of the hydraulic gear-shifting control system of double-clutch automatic gearbox in this utility model first embodiment Schematic diagram, please join Fig. 1, and this hydraulic gear-shifting control system includes electromagnetic pressure control valve 11, flow control electromagnetic valve 21, first opens Close electromagnetic valve 31, second switch electromagnetic valve 32, the 3rd switch electromagnetic valve 33, the 4th switch electromagnetic valve 34, the first driving switch valve 41st, the second driving switch valve 42, third gear switch valve 43, fourth speed bit switch valve 44, the first shift cylinder 51, second are shifted gears Oil cylinder 52, the 3rd shift cylinder 53 and the 4th shift cylinder 54.

Electromagnetic pressure control valve 11 has entrance A1 and outlet B1, the entrance A1 of electromagnetic pressure control valve 11 and working connection 10 It is connected, the outlet B1 of electromagnetic pressure control valve 11 is connected with flow control electromagnetic valve 21, makes the outlet of electromagnetic pressure control valve 11 The pressure oil of B1 output can enter the first driving switch valve 41 to promote the first shift cylinder via flow control electromagnetic valve 21 51 carry out gear shift operation, or enter the second driving switch valve 42 to promote the second shift cylinder via flow control electromagnetic valve 21 52 carry out gear shift operation, or enter third gear switch valve 43 to promote the 3rd shift cylinder via flow control electromagnetic valve 21 53 carry out gear shift operation, or enter fourth speed bit switch valve 44 to promote the 4th shift cylinder via flow control electromagnetic valve 21 54 carry out gear shift operation.

When different gears carry out gear shift operation, required gearshift pressure would generally be different.For realizing Stress control The gearshift pressure of the outlet B1 output of electromagnetic valve 11 can meet the gearshift demand under different gears, in the present embodiment, pressure Control the Stress control proportional solenoid that electromagnetic valve 11 is side valve type, and the pressure of the outlet B1 of electromagnetic pressure control valve 11 passes through Oil circuit feeds back to one end (Fig. 1 show and feeds back to load on spring end) of electromagnetic pressure control valve 11.Therefore, electromagnetic pressure control Operationally, the valve element of electromagnetic pressure control valve 11 is in the collective effect of electromagnetic force, spring load force and hydraulic feedback power for valve 11 The output pressure of outlet B1 can be adjusted down and control.That is, by the electricity of control input to electromagnetic pressure control valve 11 Current value size in Magnet, it is possible to achieve the outlet B1 of electromagnetic pressure control valve 11 exports different under different gearshift demands Gearshift pressure.

Flow control electromagnetic valve 21 has entrance A2 and two outlet B2, B3 (or referred to as first outlet B2 and second outlets B3), the entrance A2 of flow control electromagnetic valve 21 is connected with the outlet B1 of electromagnetic pressure control valve 11, flow control electromagnetic valve 21 Two outlets B2, B3 are opened with the first driving switch valve 41, the second driving switch valve 42, third gear switch valve 43 and fourth speed position Close valve 44 to be connected, so that two pressure oils exporting output in B2, B3 of flow control electromagnetic valve 21 can be opened via the first gear Closing valve 41 promotes the first shift cylinder 51 to carry out gear shift operation, or promotes the second shift cylinder via the second driving switch valve 42 52 carry out gear shift operation, or promote the 3rd shift cylinder 53 to carry out gear shift operation via third gear switch valve 43, via the Four driving switch valve 44 promotes the 4th shift cylinder 54 to carry out gear shift operation.Specifically, flow control electromagnetic valve 21 can be first Switch between working position and the second working position, when flow control electromagnetic valve 21 is in the first working position, flow control electromagnetic valve 21 entrance A2 is connected with one of them in two outlets B2, B3 of flow control electromagnetic valve 21；Work as flow control electromagnetic valve 21 when being in the second working position, two outlets B2, B3 of the entrance A2 of flow control electromagnetic valve 21 and flow control electromagnetic valve 21 In another connection.In the present embodiment, when flow control electromagnetic valve 21 is in the first working position (right position as shown in Figure 1), The entrance A2 of flow control electromagnetic valve 21 is connected with first outlet B2 of flow control electromagnetic valve 21；When flow control electromagnetic valve 21 When switching to the second working position (left position as shown in Figure 1), the entrance A2 of flow control electromagnetic valve 21 and flow control electromagnetic valve 21 second outlet B3 connection.That is, by the working position changing flow control electromagnetic valve 21, can be optionally by pressure Power oil is directed to this two outlets one of B2, B3 from entrance A2.

At present, realize hydraulic gear-shifting control most of technical scheme all based on Stress control it is impossible to precise control is changed The rate travel of gear actuator (i.e. shift cylinder) is to realize the precise control in shift process.In order to realize gearshift control On the basis of, make hydraulic system more accurate to gearshift process control, in the present embodiment, flow control electromagnetic valve 21 is side valve type Flow-control proportional solenoid.Therefore, operationally, the valve element of flow control electromagnetic valve 21 is in electromagnetism for flow control electromagnetic valve 21 The output flow of two outlets B2, B3 can be carried out under the collective effect of power and spring load force with regulation and the control of certain amplitude System.That is, flow control electromagnetic valve 21, under each working position (left position or right position), is inputted to flow control electromagnetic valve by adjustment Current value size in 21 electric magnet, thus it is possible to vary valve port opening under work at present position for the flow control electromagnetic valve 21, from And adjust the output flow in two outlets B2, B3 of flow control electromagnetic valve 21, and then realize controlling the movement of shift cylinder Speed, to realize the precise control of shift process.

First switch electromagnetic valve 31 has entrance A3 and outlet B4, and second switch electromagnetic valve 32 has entrance A4 and outlet B5, the 3rd switch electromagnetic valve 33 has entrance A5 and outlet B6, and the 4th switch electromagnetic valve 34 has entrance A6 and outlet B7.First Driving switch valve 41 has two entrances A7, A8, two outlet B8, B9 and control end C1.Second driving switch valve 42 has There are two entrances A9, A10, two outlet B10, B11 and control end C2.Third gear switch valve 43 has two entrances A11, A12, two outlet B12, B13 and control end C3.Fourth speed bit switch valve 44 have two entrances A13, A14, two Individual outlet B14, B15 and control end C4.

The entrance A3 of first switch electromagnetic valve 31 is connected with working connection 10, the outlet B4 and first of first switch electromagnetic valve 31 Control end C1 of driving switch valve 41 is connected.The entrance A4 of second switch electromagnetic valve 32 is connected with working connection 10, second switch electricity The outlet B5 of magnet valve 32 is connected with control end C2 of the second driving switch valve 42.The entrance A5 of the 3rd switch electromagnetic valve 33 and main oil Road 10 is connected, and the outlet B6 of the 3rd switch electromagnetic valve 33 is connected with control end C3 of third gear switch valve 43.4th switch electricity The entrance A6 of magnet valve 34 is connected with working connection 10, the outlet B7 of the 4th switch electromagnetic valve 34 and the control of fourth speed bit switch valve 44 End C4 is connected.

Two entrances A7, A8 of the first driving switch valve 41 two outlets B2, B3 with flow control electromagnetic valve 21 respectively It is connected.Two entrances A9, A10 of the second driving switch valve 42 two outlet B2, B3 phases with flow control electromagnetic valve 21 respectively Even.Two entrances A11, A12 of third gear switch valve 43 two outlet B2, B3 phases with flow control electromagnetic valve 21 respectively Even.Two entrances A13, A14 of fourth speed bit switch valve 44 two outlet B2, B3 phases with flow control electromagnetic valve 21 respectively Even.

Two outlets B8, B9 of first driving switch valve 41 are connected with two oil pockets of the first shift cylinder 51 respectively.The Two outlets B10, B11 of two driving switch valves 42 are connected with two oil pockets of the second shift cylinder 52 respectively.Third gear is opened Two outlets B12, B13 closing valve 43 are connected with two oil pockets of the 3rd shift cylinder 53 respectively.Fourth speed bit switch valve 44 Two outlets B14, B15 are connected with two oil pockets of the 4th shift cylinder 54 respectively.

First switch electromagnetic valve 31 can switch between cut-off working position and ON operation position, when first switch electromagnetic valve 31 When being in cut-off working position (right position as shown in Figure 1), the entrance A3 of first switch electromagnetic valve 31 and first switch electromagnetic valve 31 Outlet B4 disconnect；When first switch electromagnetic valve 31 is on working position (left position as shown in Figure 1), first switch electromagnetism The entrance A3 of valve 31 is connected with the outlet B4 of first switch electromagnetic valve 31, and the pressure oil being now derived from working connection 10 is opened via first Close electromagnetic valve 31 to be applied in control end C1 of the first driving switch valve 41, to promote the first driving switch valve 41 to be commutated.

Second switch electromagnetic valve 32 can switch between cut-off working position and ON operation position, when second switch electromagnetic valve 32 When being in cut-off working position (right position as shown in Figure 1), the entrance A4 of second switch electromagnetic valve 32 and second switch electromagnetic valve 32 Outlet B5 disconnect；When second switch electromagnetic valve 32 is on working position (left position as shown in Figure 1), second switch electromagnetism The entrance A4 of valve 32 is connected with the outlet B5 of second switch electromagnetic valve 32, and the pressure oil being now derived from working connection 10 is opened via second Close electromagnetic valve 32 to be applied in control end C2 of the second driving switch valve 42, to promote the second driving switch valve 42 to be commutated.

3rd switch electromagnetic valve 33 can switch between cut-off working position and ON operation position, when the 3rd switch electromagnetic valve 33 When being in cut-off working position (right position as shown in Figure 1), the entrance A5 of the 3rd switch electromagnetic valve 33 and the 3rd switch electromagnetic valve 33 Outlet B6 disconnect；When the 3rd switch electromagnetic valve 33 is on working position (left position as shown in Figure 1), the 3rd switch electromagnetism The entrance A5 of valve 33 is connected with the outlet B6 of the 3rd switch electromagnetic valve 33, and the pressure oil being now derived from working connection 10 is opened via the 3rd Close electromagnetic valve 33 to be applied in control end C3 of third gear switch valve 43, to promote third gear switch valve 43 to be commutated.

4th switch electromagnetic valve 34 can switch between cut-off working position and ON operation position, when the 4th switch electromagnetic valve 34 When being in cut-off working position (right position as shown in Figure 1), the entrance A6 of the 4th switch electromagnetic valve 34 and the 4th switch electromagnetic valve 34 Outlet B7 disconnect；When the 4th switch electromagnetic valve 34 is on working position (left position as shown in Figure 1), the 4th switch electromagnetism The entrance A6 of valve 34 is connected with the outlet B7 of the 4th switch electromagnetic valve 34, and the pressure oil being now derived from working connection 10 is opened via the 4th Close electromagnetic valve 34 to be applied in control end C4 of fourth speed bit switch valve 44, to promote fourth speed bit switch valve 44 to be commutated.

In the present embodiment, the first driving switch valve 41 is the pilot operated directional control valve of side valve type.First driving switch valve 41 can be Switch between first working position and the second working position, when the first driving switch valve 41 is in the first working position (right side as shown in Figure 1 Position) when, two entrances A7, A8 of the first driving switch valve 41 are broken with two outlets B8, B9 of the first driving switch valve 41 respectively Open, now two outlets B8, B9 of the first driving switch valve 41 are all communicated to fuel tank；When first switch electromagnetic valve 31 is on Working position, is applied to the control end of the first driving switch valve 41 from the pressure oil of working connection 10 via first switch electromagnetic valve 31 When promoting the first driving switch valve 41 to switch to the second working position (left position as shown in Figure 1) on C1, the first driving switch valve 41 Two entrances A7, A8 connect with two of the first driving switch valve 41 outlet B8, B9 respectively, now from flow-control electromagnetism The pressure oil of valve 21 just can enter in the first shift cylinder 51 through the first driving switch valve 41 to promote the first shift cylinder 51 Carry out gear shift operation.

In the present embodiment, the second driving switch valve 42 is the pilot operated directional control valve of side valve type.Second driving switch valve 42 can be Switch between first working position and the second working position, when the second driving switch valve 42 is in the first working position (right side as shown in Figure 1 Position) when, two entrances A9, A10 two outlets B10, B11 with the second driving switch valve 42 respectively of the second driving switch valve 42 Disconnect, now two outlets B10, B11 of the second driving switch valve 42 are all communicated to fuel tank；When second switch electromagnetic valve 32 is in ON operation position, is applied to the control of the second driving switch valve 42 from the pressure oil of working connection 10 via second switch electromagnetic valve 32 When promoting the second driving switch valve 42 to switch to the second working position (left position as shown in Figure 1) on end C2 processed, the second driving switch Two entrances A9, A10 of valve 42 are connected with two outlets B10, B11 of the second driving switch valve 42 respectively, the pressure being now derived from Power oil just can enter in the second shift cylinder 52 through the second driving switch valve 42 to promote the second shift cylinder 52 to be shifted gears Operation.

In the present embodiment, third gear switch valve 43 is the pilot operated directional control valve of side valve type.Third gear switch valve 43 can be Switch between first working position and the second working position, when third gear switch valve 43 is in the first working position (right side as shown in Figure 1 Position) when, two entrances A11, A12 of third gear switch valve 43 respectively with two outlet B12 of third gear switch valve 43, B13 disconnects, and now the two of third gear switch valve 43 outlet B12, B13 are all communicated to fuel tank；When the 3rd switch electromagnetic valve 33 It is on working position, the pressure oil from working connection 10 is applied to third gear switch valve 43 via the 3rd switch electromagnetic valve 33 Control end C3 on promote third gear switch valve 43 when switching to the second working position (left position as shown in Figure 1), third gear Two entrances A11, A12 of switch valve 43 are connected with two outlets B12, B13 of third gear switch valve 43 respectively, are now derived from The pressure oil of flow control electromagnetic valve 21 just can enter in the 3rd shift cylinder 53 through third gear switch valve 43 to promote the Three shift cylinders 53 carry out gear shift operation.

In the present embodiment, fourth speed bit switch valve 44 is the pilot operated directional control valve of side valve type.Fourth speed bit switch valve 44 can be Switch between first working position and the second working position, when fourth speed bit switch valve 44 is in the first working position (right side as shown in Figure 1 Position) when, two entrances A13, A14 of fourth speed bit switch valve 44 respectively with two outlet B14 of fourth speed bit switch valve 44, B15 disconnects, and now the two of fourth speed bit switch valve 44 outlet B14, B15 are all communicated to fuel tank；When the 4th switch electromagnetic valve 34 It is on working position, the pressure oil from working connection 10 is applied to fourth speed bit switch valve 44 via the 4th switch electromagnetic valve 34 Control end C4 on promote fourth speed bit switch valve 44 when switching to the second working position (left position as shown in Figure 1), fourth speed position Two entrances A13, A14 of switch valve 44 are connected with two outlets B14, B15 of fourth speed bit switch valve 44 respectively, are now derived from Pressure oil just can through fourth speed bit switch valve 44 enter the 4th shift cylinder 54 in promote the 4th shift cylinder 54 carry out Gear shift operation.

As described above, the outlet of electromagnetic pressure control valve 11 is connected with the entrance of flow control electromagnetic valve 21, flow-control The outlet of electromagnetic valve 21 and the entrance of the first driving switch valve 41, the entrance of the second driving switch valve 42, third gear switch valve The entrance connection of 43 entrance and fourth speed bit switch valve 44, the outlet of the first driving switch valve 41 and the first shift cylinder 51 Oil pocket connects, and the outlet of the second driving switch valve 42 is connected with the oil pocket of the second shift cylinder 52, third gear switch valve 43 Outlet is connected with the oil pocket of the 3rd shift cylinder 53, and the outlet of fourth speed bit switch valve 44 is with the oil pocket of the 4th shift cylinder 54 even Connect, the outlet of first switch electromagnetic valve 31 is connected with the control end of the first driving switch valve 41, the first driving switch valve 41 is by One switch electromagnetic valve 31 control is commutated, and the outlet of second switch electromagnetic valve 32 is with the control end of the second driving switch valve 42 even Connect, the second driving switch valve 42 is controlled by second switch electromagnetic valve 32 and commutated, the outlet of the 3rd switch electromagnetic valve 33 and the The control end of three driving switch valves 43 connects, and third gear switch valve 43 is commutated by the 3rd switch electromagnetic valve 33 control, the The outlet of four switch electromagnetic valves 34 is connected with the control end of fourth speed bit switch valve 44, and fourth speed bit switch valve 44 is switched by the 4th Electromagnetic valve 34 control is commutated, the entrance of electromagnetic pressure control valve 11, the entrance of first switch electromagnetic valve 31, second switch electricity The entrance of the entrance of magnet valve 32, the entrance of the 3rd switch electromagnetic valve 33 and the 4th switch electromagnetic valve 34 is all with working connection 10 even Connect.

Electromagnetic pressure control valve 11 can adjust the inlet pressure of flow control electromagnetic valve 21, and flow control electromagnetic valve 21 can With the pressure that exported according to inlet pressure precise control and flow, flow control electromagnetic valve 21 can also carry out changing of oil circuit simultaneously To control to convert pressure oil port and drain tap.The inlet pressure that can adjust, can export according to inlet pressure precise control Pressure and flow, the commutation control of oil circuit can also be carried out to convert pressure oil port and drain tap simultaneously.First switch electromagnetism Valve 31 can control the opening and closing of the first driving switch valve 41, makes the pressure oil of the first shift cylinder 51 and flow control electromagnetic valve 21 Mouth and drain tap connect；Second switch electromagnetic valve 32 can control the opening and closing of the second driving switch valve 42, makes the second shift cylinder 52 are connected with the pressure oil port of flow control electromagnetic valve 21 and drain tap；3rd switch electromagnetic valve 33 can control third gear to open Close the opening and closing of valve 43, so that the 3rd shift cylinder 53 is connected with the pressure oil port of flow control electromagnetic valve 21 and drain tap；4th opens Close the opening and closing that electromagnetic valve 34 can control fourth speed bit switch valve 44, make the 4th shift cylinder 54 and flow control electromagnetic valve 21 Pressure oil port and drain tap connect.

Therefore, electromagnetic valve 11, flow control electromagnetic valve 21 and first switch electromagnetic valve 31 are controlled by control pressure, permissible First shift cylinder 51 is moved by certain speed between the first position and the second position.First is supposed in the present embodiment Shift cylinder 51 is used for controlling reverse gear and 6 grades, when electromagnetic pressure control valve 11 and first switch electromagnetic valve 31 turn on and flow control When electromagnetic valve 21 processed is in the first working position (right position as shown in Figure 1), from working connection 10 pressure oil via Stress control Electromagnetic valve 11 and flow control electromagnetic valve 21 reach the first outlet of flow control electromagnetic valve 21 after carrying out pressure and Flow-rate adjustment B2, because the first driving switch valve 41 has commutated to conduction position under the control of first switch electromagnetic valve 31, therefore flow control Pressure oil in first outlet B2 of electromagnetic valve 21 processed goes out reaching first via first entrance A7 of the first driving switch valve 41 Mouth B8, then reaches the left chamber of the first shift cylinder 51, promotes the first shift cylinder 51 to move to right and hang up 6 grades；Work as Stress control Electromagnetic valve 11 and first switch electromagnetic valve 31 turns on and flow control electromagnetic valve 21 is in the second working position (left side as shown in Figure 1 Position) when, the pressure oil from working connection 10 carries out pressure and stream via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 Amount reaches second outlet B3 of flow control electromagnetic valve 21 after adjusting, because the first driving switch valve 41 is in first switch electromagnetic valve Commutate to conduction position under 31 control, therefore the pressure oil in second outlet B3 of flow control electromagnetic valve 21 will be via Second entrance A8 of one driving switch valve 41 reaches second outlet B9, then reaches the right chamber of the first shift cylinder 51, promotes the One shift cylinder 51 moves to left and hangs up reverse gear.

Electromagnetic valve 11, flow control electromagnetic valve 21 and second switch electromagnetic valve 32 are controlled by control pressure, so that Second shift cylinder 52 is pressed certain speed between the first position and the second position and is moved.The second gearshift is supposed in the present embodiment Oil cylinder 52 is used for controlling 7 grades and 3 grades, when electromagnetic pressure control valve 11 and second switch electromagnetic valve 32 turn on and flow-control electromagnetism When valve 21 is in the first working position (right position as shown in Figure 1), from working connection 10 pressure oil via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 carry out reaching first outlet B2 of flow control electromagnetic valve 21 after pressure and Flow-rate adjustment, due to Second driving switch valve 42 has commutated to conduction position under the control of second switch electromagnetic valve 32, therefore flow control electromagnetic valve First entrance A9 via the second driving switch valve 42 is reached first outlet B10 by the pressure oil in 21 first outlet B2, so Reach the left chamber of the second shift cylinder 52 afterwards, promote the second shift cylinder 52 to move to right and hang up 3 grades；When electromagnetic pressure control valve 11 Turn on second switch electromagnetic valve 32 and when flow control electromagnetic valve 21 is in the second working position (left position as shown in Figure 1), come Carry out after pressure and Flow-rate adjustment from the pressure oil of working connection 10 via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 Reach second outlet B3 of flow control electromagnetic valve 21, because the second driving switch valve 42 is in the control of second switch electromagnetic valve 32 Under commutated to conduction position, therefore the pressure oil in second outlet B3 of flow control electromagnetic valve 21 will be opened via the second gear Second entrance A10 closing valve 42 reaches second outlet B11, then reaches the right chamber of the second shift cylinder 52, promotes the second gearshift Oil cylinder 52 moves to left and hangs up 7 grades.

Electromagnetic valve 11, flow control electromagnetic valve 21 and the 3rd switch electromagnetic valve 33 are controlled by control pressure, so that 3rd shift cylinder 53 is pressed certain speed between the first position and the second position and is moved.The 3rd gearshift is supposed in the present embodiment Oil cylinder 53 is used for controlling 2 grades and 4 grades, when electromagnetic pressure control valve 11 and the 3rd switch electromagnetic valve 33 turn on and flow-control electromagnetism When valve 21 is in the first working position (right position as shown in Figure 1), from working connection 10 pressure oil via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 carry out reaching first outlet B2 of flow control electromagnetic valve 21 after pressure and Flow-rate adjustment, due to Third gear switch valve 43 has commutated to conduction position under the control of the 3rd switch electromagnetic valve 33, therefore flow control electromagnetic valve First entrance A11 via third gear switch valve 43 is reached first outlet B12 by the pressure oil in 21 first outlet B2, so Reach the left chamber of the 3rd shift cylinder 53 afterwards, promote the 3rd shift cylinder 53 to move to right and hang up 4 grades；When electromagnetic pressure control valve 11 Turn on the 3rd switch electromagnetic valve 33 and when flow control electromagnetic valve 21 is in the second working position (left position as shown in Figure 1), come Carry out after pressure and Flow-rate adjustment from the pressure oil of working connection 10 via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 Reach second outlet B3 of flow control electromagnetic valve 21, because third gear switch valve 43 is in the control of the 3rd switch electromagnetic valve 33 Under commutated to conduction position, therefore the pressure oil in second outlet B3 of flow control electromagnetic valve 21 will be opened via third gear Second entrance A12 closing valve 43 reaches second outlet B13, then reaches the right chamber of the 3rd shift cylinder 53, promotes the 3rd gearshift Oil cylinder 53 moves to left and hangs up 2 grades.

Electromagnetic valve 11, flow control electromagnetic valve 21 and the 4th switch electromagnetic valve 34 are controlled by control pressure, so that 4th shift cylinder 54 is pressed certain speed between the first position and the second position and is moved.The 4th gearshift is supposed in the present embodiment Oil cylinder 54 is used for controlling 5 grades and 1 grade, when electromagnetic pressure control valve 11 and the 4th switch electromagnetic valve 34 turn on and flow-control electromagnetism When valve 21 is in the first working position (right position as shown in Figure 1), from working connection 10 pressure oil via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 carry out reaching first outlet B2 of flow control electromagnetic valve 21 after pressure and Flow-rate adjustment, due to Fourth speed bit switch valve 44 has commutated to conduction position under the control of the 4th switch electromagnetic valve 34, therefore flow control electromagnetic valve First entrance A13 via fourth speed bit switch valve 44 is reached first outlet B14 by the pressure oil in 21 first outlet B2, so Reach the left chamber of the 4th shift cylinder 54 afterwards, promote the 4th shift cylinder 54 to move to right and hang up 1 grade；When electromagnetic pressure control valve 11 Turn on the 4th switch electromagnetic valve 34 and when flow control electromagnetic valve 21 is in the second working position (left position as shown in Figure 1), come Carry out after pressure and Flow-rate adjustment from the pressure oil of working connection 10 via electromagnetic pressure control valve 11 and flow control electromagnetic valve 21 Reach second outlet B3 of flow control electromagnetic valve 21, because fourth speed bit switch valve 44 is in the control of the 4th switch electromagnetic valve 34 Under commutated to conduction position, therefore the pressure oil in second outlet B3 of flow control electromagnetic valve 21 will be opened via fourth speed position Second entrance A14 closing valve 44 reaches second outlet B15, then reaches the right chamber of the 4th shift cylinder 54, promotes the 4th gearshift Oil cylinder 54 moves to left and hangs up 5 grades.

Thus in this utility model embodiment, using electromagnetic valve as few as possible and spool valve combinations, realizing eight gears Automatic transmission shift control, and pass through electromagnetic pressure control valve 11 and flow control electromagnetic valve 21, realizing variator It is achieved that the two ore control of gearshift pressure and flow on the basis of gearshift controls, make hydraulic system more smart to gearshift process control Really, the precise control of shift process can be better achieved, reduce the use of guiding valve simultaneously, system is more light, and control is patrolled Collect more succinct.

The hydraulic gear-shifting control system of the present embodiment also includes main pump 61, auxiliary pump 62 and fuel tank 63.Main pump 61 and auxiliary pump 62 Via oil absorption filter 64 oil suction from fuel tank 63, thus providing work institute in the working connection 10 of this hydraulic gear-shifting control system The pressure oil needing.In the present embodiment, main pump 61 is moved by the engine direct tape splicing of automobile, and auxiliary pump 62 is driven by motor, auxiliary pump 62 1 Aspect can assist main pump 61 in the case of the output oil amount deficiency of main pump 61, on the other hand can in engine stop and therefore Main pump 61 guarantees the supply of pressure oil in system in the case of stopping.Fuel tank symbol is employed, these oil at multiple positions of Fig. 1 Case symbol is interpreted as by related pipeline connection to fuel tank 63.

In order to stop fluid reverse flow, the outlet of main pump 61 and auxiliary pump 62 is connected with check valve 65.For control system In maximum pressure, the outlet of main pump 61 is also associated with system relief valve 66, system relief valve 66 can for safety overflow valve or Check valve, in the present embodiment, system relief valve 66 is check valve, is connected between the outlet of main pump 61 and fuel tank 63, by list The maximum pressure allowing in valve initialization system, when the pressure in system exceedes this maximum pressure, check valve is opened and is let out Oil.

The hydraulic gear-shifting control system of the present embodiment also includes first clutch electromagnetic valve 71, second clutch electromagnetic valve 72 With clutch relief valve 73.

First clutch electromagnetic valve 71 is used for controlling joint or the separation of first clutch T1.First clutch electromagnetic valve 71 There is entrance A15 with outlet B16, the entrance A15 of first clutch electromagnetic valve 71 is connected with working connection 10, first clutch electromagnetism The outlet B16 of valve 71 is connected with clutch relief valve 73.First clutch electromagnetic valve 71 can be in cut-off working position and ON operation Switch between position, when first clutch electromagnetic valve 71 is in cut-off working position (right position as shown in Figure 1), first clutch electricity The entrance A15 of magnet valve 71 is disconnected with the outlet B16 of first clutch electromagnetic valve 71, and the outlet of first clutch electromagnetic valve 71 B16 is communicated to fuel tank 63, and now first clutch T1 separates；When first clutch electromagnetic valve 71 is on working position (as Fig. 1 Shown left position) when, the entrance A15 of first clutch electromagnetic valve 71 is connected with the outlet B16 of first clutch electromagnetic valve 71, this When pressure oil on the working connection 10 drive first clutch via first clutch electromagnetic valve 71 and clutch relief valve 73 T1 engages.

Second clutch electromagnetic valve 72 is used for controlling joint or the separation of second clutch T2.Second clutch electromagnetic valve 72 There is entrance A16 with outlet B17, the entrance A16 of second clutch electromagnetic valve 72 is connected with working connection 10, second clutch electromagnetism The outlet B17 of valve 72 is connected with clutch relief valve 73.Second clutch electromagnetic valve 72 can be in cut-off working position and ON operation Switch between position, when second clutch electromagnetic valve 72 is in cut-off working position (right position as shown in Figure 1), second clutch electricity The entrance A16 of magnet valve 72 is disconnected with the outlet B17 of second clutch electromagnetic valve 72, and the outlet of second clutch electromagnetic valve 72 B17 is communicated to fuel tank 63, and now second clutch T2 separates；When second clutch electromagnetic valve 72 is on working position (as Fig. 1 Shown left position) when, the entrance A16 of second clutch electromagnetic valve 72 is connected with the outlet B17 of second clutch electromagnetic valve 72, this When pressure oil on the working connection 10 drive second clutch via second clutch electromagnetic valve 72 and clutch relief valve 73 T2 engages.

Clutch relief valve 73, when clutch T1, T2 break down, leads to the oil circuit of clutch T1, T2 for disconnection. Clutch relief valve 73 has two entrances A17, A18, two outlet B18, B19 and control end C5, clutch relief valve 73 two entrances A17, A18 respectively with the outlet B16 of first clutch electromagnetic valve 71 and going out of second clutch electromagnetic valve 72 Mouthful B17 is connected, two outlets B18, B19 of clutch relief valve 73 respectively with first clutch T1 and second clutch T2 phase Even, the outlet of the two of which switch electromagnetic valve in first switch electromagnetic valve to the 4th switch electromagnetic valve 31,32,33,34 is simultaneously Connect to control end C5 of clutch relief valve 73, in the present embodiment, the outlet B4 and the 4th of first switch electromagnetic valve 31 opens The outlet B7 closing electromagnetic valve 34 is connected simultaneously to control end C5 of clutch relief valve 73.Clutch relief valve 73 can be in open position Put switching and closed position between, when clutch relief valve 73 (left position as shown in Figure 1) in an open position, clutch is pacified Two entrances A17, A18 of full valve 73 are connected with two outlets B18, B19 of clutch relief valve 73 respectively, now by control The switch operation of first clutch electromagnetic valve 71 can realize joint or the separation of first clutch T1, by controlling the second clutch The switch operation of device electromagnetic valve 72 can realize joint or the separation of second clutch T2；When clutch T1, T2 break down, Open first switch electromagnetic valve 31 and the 4th switch electromagnetic valve 34 simultaneously, make first switch electromagnetic valve 31 and the 4th switch electromagnetic valve The pressure oil of 34 outputs is applied simultaneously in control end C5 of clutch relief valve 73, promotes clutch relief valve 73 from open position Put and switch to closed position (right position as shown in Figure 1), now two entrances A17, A18 of clutch relief valve 73 respectively with from Two outlets B18, B19 of clutch relief valve 73 disconnect, thus the oil circuit of clutch T1, T2, now the first clutch are led in cut-out Device T1 and second clutch T2 passes through clutch relief valve 73 off-load.

The hydraulic gear-shifting control system of the present embodiment also includes the 5th switch electromagnetic valve 35, park control valve 81 and parking oil Cylinder 82.5th switch electromagnetic valve 35 has entrance A19 and outlet B20.The entrance A19 of the 5th switch electromagnetic valve 35 and working connection 10 It is connected, the outlet B20 of the 5th switch electromagnetic valve 35 is connected with control end C6 of park control valve 81.5th switch electromagnetic valve 35 can Cut-off working position and ON operation position between switch, when the 5th switch electromagnetic valve 35 be in cut-off working position (as shown in Figure 1 Right position) when, the outlet B20 of the entrance A19 of the 5th switch electromagnetic valve 35 and the 5th switch electromagnetic valve 35 disconnects；When the 5th switch electricity When magnet valve 35 is on working position (left position as shown in Figure 1), the entrance A19 of the 5th switch electromagnetic valve 35 and the 5th switch electricity The outlet B20 connection of magnet valve 35, the pressure oil being now derived from working connection 10 is applied to parking control via the 5th switch electromagnetic valve 35 In control end C6 of valve 81 processed, to promote park control valve 81 to be commutated.

In the present embodiment, park control valve 81 is the pilot operated directional control valve of side valve type.Park control valve 81 have entrance A20, Two outlet B21, B22 and control end C6, the entrance A20 of park control valve 81 is connected with working connection 10, park control valve 81 Two outlets B21, B22 are connected with two oil pockets of parking oil cylinder 82 respectively, and control end C6 of park control valve 81 is opened with the 5th The outlet B20 closing electromagnetic valve 35 is connected.Park control valve 81 can switch between the first working position and the second working position, works as parking When control valve 81 is in the first working position (right position as shown in Figure 1), the entrance A20 of park control valve 81 and park control valve 81 The connection of first outlet B21, second outlet B22 of park control valve 81 connects with fuel tank 63, now from the pressure of working connection 10 Power oil enters in an oil pocket of parking oil cylinder 82 through park control valve 81 to promote parking oil cylinder 82 to a side shifting；When Five switch electromagnetic valves 35 are on working position, are applied to through the 5th switch electromagnetic valve 35 from the pressure oil of working connection 10 and stay When promoting park control valve 81 to switch to the second working position (left position as shown in Figure 1) in control end C6 of car control valve 81, stay The entrance A20 of car control valve 81 is connected with second outlet B22 of park control valve 81, first outlet B21 of park control valve 81 Connect with fuel tank 63, the pressure oil being now derived from working connection 10 enters another oil of parking oil cylinder 82 through park control valve 81 To promote parking oil cylinder 82 to another side shifting in chamber.Thus, by the 5th switch electromagnetic valve 35, park control valve 81 and parking Automatic parking and the unlocking function of vehicle realized by oil cylinder 82.

The hydraulic gear-shifting control system of the present embodiment also includes second pressure and controls electromagnetic valve 12 and working connection pressure to adjust Valve 18.

Second pressure controls electromagnetic valve 12 to have entrance A21 and outlet B23.Working connection pressure-regulating valve 18 has entrance A22, two outlets B24, B25 (or referred to as first outlet B24 and second outlet B25) and two control ends C7, C8 (or referred to as the One control end C7 and the second control end C8).Second pressure controls the entrance A21 of electromagnetic valve 12 to be connected with working connection 10, the second pressure Power controls the outlet B23 of electromagnetic valve 12 to be connected with the first control end C7 of working connection pressure-regulating valve 18, and working connection pressure is adjusted The entrance A22 of valve 18 and the second control end C8 are connected with working connection 10 simultaneously, first outlet B24 of working connection pressure-regulating valve 18 It is connected with fuel tank 63, second outlet B25 of working connection pressure-regulating valve 18 leads to lubrication oil circuit, for related elements (as bearing, gear, clutch etc.) is lubricated and cools down.

In the present embodiment, second pressure controls the Stress control proportional solenoid that electromagnetic valve 12 is side valve type, and the second pressure Power controls the pressure of the outlet B23 of electromagnetic valve 12 to feed back to second pressure by oil circuit and controls one end of electromagnetic valve 12 (shown in Fig. 1 For feeding back to electric magnet end).Therefore, second pressure controls electromagnetic valve 12 operationally, and second pressure controls the valve of electromagnetic valve 12 Core can be adjusted to the output pressure of outlet B23 under the collective effect of electromagnetic force, spring load force and hydraulic feedback power And control, and then change the active force being applied in the first control end C7 of working connection pressure-regulating valve 18, make working connection pressure Regulating valve 18 progressively switches to open position from closed position, thus realizing the regulation to oil liquid pressure in working connection 10, simultaneously Make unnecessary fluid in working connection 10 can transfer to lubrication oil circuit via working connection pressure-regulating valve 18, to meet to fluid Cooling and the needs that related elements are lubricated.

In the present embodiment, working connection pressure-regulating valve 18 has three working positions.When second pressure controls electromagnetic valve 12 When the output pressure of outlet B23 is larger, act on active force in the first control end C7 of working connection pressure-regulating valve 18 also relatively Greatly, now working connection pressure-regulating valve 18 is in the first working position (right position as shown in Figure 1), working connection pressure-regulating valve 18 Entrance A22 is all disconnected with two outlets B24, B25 of working connection pressure-regulating valve 18；Control electromagnetic valve 12 with second pressure The output pressure of outlet B23 reduces, and the active force acting in the first control end C7 of working connection pressure-regulating valve 18 also reduces, The power in the second control end C8 of working connection pressure-regulating valve 18 that now acts on will be greater than acting in the first control end C7 Power, promotes working connection pressure-regulating valve 18 to commutate to the second working position (middle position as shown in Figure 1), now working connection pressure regulation The entrance A22 of valve 18 is connected with second outlet B25 of working connection pressure-regulating valve 18, and fluid can be adjusted via working connection pressure Valve 18 leads to lubrication oil circuit；The output pressure controlling the outlet B23 of electromagnetic valve 12 with second pressure continues to reduce, main oil Road pressure-regulating valve 18 will commutate to the 3rd working position (left position as shown in Figure 1), now the entering of working connection pressure-regulating valve 18 Mouth A22 is all connected with two outlets B24, B25 of working connection pressure-regulating valve 18, and a part of fluid can be via working connection pressure Regulating valve 18 leads to lubrication oil circuit, and another part fluid can return fuel tank 63 via working connection pressure-regulating valve 18.

The hydraulic gear-shifting control system of the present embodiment also includes the 3rd electromagnetic pressure control valve 13.3rd electromagnetic pressure control Valve 13 has entrance A23 and outlet B26.The entrance A23 of the 3rd electromagnetic pressure control valve 13 is connected with working connection 10, the 3rd pressure The outlet B26 lubrication oil circuit controlling electromagnetic valve 13 is connected.

In the present embodiment, the 3rd electromagnetic pressure control valve 13 is the Stress control proportional solenoid of side valve type, and the 3rd pressure Power controls the pressure of the outlet B26 of electromagnetic valve 13 to feed back to one end of the 3rd electromagnetic pressure control valve 13 (shown in Fig. 1 by oil circuit For feeding back to electric magnet end).Therefore, the 3rd electromagnetic pressure control valve 13 operationally, the valve of the 3rd electromagnetic pressure control valve 13 Core can be adjusted to the output pressure of outlet B26 under the collective effect of electromagnetic force, spring load force and hydraulic feedback power And control.

[second embodiment]

Fig. 2 is the structure of the hydraulic gear-shifting control system of double-clutch automatic gearbox in this utility model second embodiment Schematic diagram, the present embodiment is with the difference of above-mentioned first embodiment, and in the present embodiment, first switch electromagnetic valve is opened to the 4th Close electromagnetic valve 31,32,33,34 to be integrated, such as first switch electromagnetic valve 31 and second switch electromagnetic valve 32 are integrated into one The switch electromagnetic valve 36 of individual 3-position 4-way, makes the entrance A3 of the first switch electromagnetic valve 31 and entrance A4 of second switch electromagnetic valve 32 It is integrated into an entrance A24 of the switch electromagnetic valve 36 of this 3-position 4-way and be connected with working connection 10, first switch electromagnetic valve 31 Two of the outlet B5 switch electromagnetic valve 36 that is respectively this 3-position 4-way of outlet B4 and second switch electromagnetic valve 32 export；The Three switch electromagnetic valves 33 and the 4th switch electromagnetic valve 34 are integrated into the switch electromagnetic valve 37 of another 3-position 4-way, make the 3rd switch The entrance A6 of the entrance A5 of electromagnetic valve 33 and the 4th switch electromagnetic valve 34 is integrated into the one of the switch electromagnetic valve 37 of this 3-position 4-way Individual entrance A25 and being connected with working connection 10, the outlet B6 of the 3rd switch electromagnetic valve 33 and outlet B7 of the 4th switch electromagnetic valve 34 It is respectively two outlets of the switch electromagnetic valve 37 of this 3-position 4-way.

The switch electromagnetic valve 36 of first 3-position 4-way can be cut between cut-off position, the first working position and the second working position Change, in the present embodiment, when switch electromagnetic valve 36 is located at cut-off position (middle position as shown in Figure 2), the entrance of switch electromagnetic valve 36 A24 all disconnects and not connecting with first outlet B4 of switch electromagnetic valve 36 and second outlet B5, now the first of switch electromagnetic valve 36 Outlet B4 and second outlet B5 are communicated to fuel tank；When switch electromagnetic valve 36 switches to the first working position (right position as shown in Figure 2) When, the entrance A24 of switch electromagnetic valve 36 is connected with first outlet B4 of switch electromagnetic valve 36, now the second of switch electromagnetic valve 36 Outlet B5 is communicated to fuel tank；When switch electromagnetic valve 36 switches to the second working position (left position as shown in Figure 2), switch electromagnetic valve 36 entrance A24 is connected with second outlet B5 of switch electromagnetic valve 36, and first outlet B4 of switch electromagnetic valve 36 is communicated to fuel tank. That is, by change switch electromagnetic valve 36 working position, can optionally by pressure oil from entrance A24 be directed to this two On individual outlet one of B4, B5, therefore can be by the first switch electromagnetic valve 31 in above-mentioned first embodiment and second switch electromagnetic valve 32 are integrated into a switch electromagnetic valve, simplify quantity and the reduces cost of guiding valve further.

The switch electromagnetic valve 37 of second 3-position 4-way can be cut between cut-off position, the first working position and the second working position Change, in the present embodiment, when switch electromagnetic valve 37 is located at cut-off position (middle position as shown in Figure 2), the entrance of switch electromagnetic valve 37 A24 all disconnects and not connecting with first outlet B6 of switch electromagnetic valve 37 and second outlet B7, now the first of switch electromagnetic valve 37 Outlet B6 and second outlet B7 are communicated to fuel tank；When switch electromagnetic valve 37 switches to the first working position (right position as shown in Figure 2) When, the entrance A24 of switch electromagnetic valve 37 is connected with first outlet B6 of switch electromagnetic valve 37, now the second of switch electromagnetic valve 37 Outlet B7 is communicated to fuel tank；When switch electromagnetic valve 37 switches to the second working position (left position as shown in Figure 2), switch electromagnetic valve 37 entrance A24 is connected with second outlet B7 of switch electromagnetic valve 37, and first outlet B6 of switch electromagnetic valve 37 is communicated to fuel tank. That is, by change switch electromagnetic valve 37 working position, can optionally by pressure oil from entrance A24 be directed to this two On individual outlet one of B6, B7, therefore can be by the 3rd switch electromagnetic valve 33 in above-mentioned first embodiment and the 4th switch electromagnetic valve 34 are integrated into a switch electromagnetic valve, simplify quantity and the reduces cost of guiding valve further.

The other structures of the present embodiment and operation principle can join above-mentioned first embodiment, will not be described here.

The above, be only preferred embodiment of the present utility model, not this utility model is made any formal Restriction although this utility model is disclosed above with preferred embodiment, but be not limited to this utility model, any ripe Know professional and technical personnel, in the range of without departing from technical solutions of the utility model, when in the technology of available the disclosure above Hold and make a little Equivalent embodiments changing or be modified to equivalent variations, as long as being without departing from technical solutions of the utility model Hold, any simple modification, equivalent variations and modification above example made according to technical spirit of the present utility model, all still Belong in the range of technical solutions of the utility model.

Claims

1. a kind of hydraulic gear-shifting control system of double-clutch automatic gearbox is it is characterised in that this hydraulic gear-shifting control system Including electromagnetic pressure control valve (11), flow control electromagnetic valve (21), first switch electromagnetic valve (31), second switch electromagnetic valve (32), the 3rd switch electromagnetic valve (33), the 4th switch electromagnetic valve (34), the first driving switch valve (41), the second driving switch valve (42), third gear switch valve (43), fourth speed bit switch valve (44), the first shift cylinder (51), the second shift cylinder (52), 3rd shift cylinder (53) and the 4th shift cylinder (54), the wherein outlet of this electromagnetic pressure control valve (11) and this flow control The entrance of electromagnetic valve (21) processed connects, and the outlet of this flow control electromagnetic valve (21) is entered with this first driving switch valve (41) Mouth, the entrance of this second driving switch valve (42), the entrance of this third gear switch valve (43) and this fourth speed bit switch valve (44) entrance connects, and the outlet of this first driving switch valve (41) is connected with the oil pocket of this first shift cylinder (51), and this The outlet of two driving switch valves (42) is connected with the oil pocket of this second shift cylinder (52), the going out of this third gear switch valve (43) Mouthful it is connected with the oil pocket of the 3rd shift cylinder (53), the outlet of this fourth speed bit switch valve (44) and the 4th shift cylinder (54) oil pocket connects, and the outlet of this first switch electromagnetic valve (31) is connected with the control end of this first driving switch valve (41), This first driving switch valve (41) is commutated by the control of this first switch electromagnetic valve (31), this second switch electromagnetic valve (32) Outlet is connected with the control end of this second driving switch valve (42), and this second driving switch valve (42) is by this second switch electromagnetic valve (32) control and commutated, the outlet of the 3rd switch electromagnetic valve (33) is connected with the control end of this third gear switch valve (43) Connect, this third gear switch valve (43) is commutated by the 3rd switch electromagnetic valve (33) control, the 4th switch electromagnetic valve (34) outlet is connected with the control end of this fourth speed bit switch valve (44), and this fourth speed bit switch valve (44) is switched by the 4th Electromagnetic valve (34) control commutated, the entrance of this electromagnetic pressure control valve (11), the entrance of this first switch electromagnetic valve (31), The entrance of this second switch electromagnetic valve (32), the entrance of the 3rd switch electromagnetic valve (33) and the 4th switch electromagnetic valve (34) Entrance be all connected with working connection (10).

2. the hydraulic gear-shifting control system of double-clutch automatic gearbox as claimed in claim 1 is it is characterised in that this pressure Control electromagnetic valve (11) have entrance (A1) and export (B1), this flow control electromagnetic valve (21) there is entrance (A2) and two go out Mouth (B2, B3), the entrance (A1) of this electromagnetic pressure control valve (11) is connected with this working connection (10), this electromagnetic pressure control valve (11) outlet (B1) is connected with the entrance (A2) of this flow control electromagnetic valve (21), two of this flow control electromagnetic valve (21) Outlet (B2, B3) and this first driving switch valve (41), this second driving switch valve (42), this third gear switch valve (43) and This fourth speed bit switch valve (44) is connected.

3. the hydraulic gear-shifting control system of double-clutch automatic gearbox as claimed in claim 2 is it is characterised in that this flow Control electromagnetic valve (21) can switch between the first working position and the second working position, this flow control electromagnetic valve (21) is in first During working position, two outlets of the entrance (A2) of this flow control electromagnetic valve (21) and this flow control electromagnetic valve (21) (B2, B3 one of them connection in)；When this flow control electromagnetic valve (21) is in the second working position, this flow control electromagnetic valve (21) Two outlets (B2, B3) of entrance (A2) and this flow control electromagnetic valve (21) in another connect.

4. double-clutch automatic gearbox as claimed in claim 2 hydraulic gear-shifting control system it is characterised in that this first Switch electromagnetic valve (31) has entrance (A3) and outlet (B4), and this second switch electromagnetic valve (32) has entrance (A4) and outlet (B5), the 3rd switch electromagnetic valve (33) has entrance (A5) and outlet (B6), and the 4th switch electromagnetic valve (34) has entrance (A6) and outlet (B7), this first driving switch valve (41) has two entrances (A7, A8), two outlets (B8, B9) and Control end (C1), this second driving switch valve (42) has two entrances (A9, A10), two outlets (B10, B11) and a control End (C2) processed, this third gear switch valve (43) has two entrances (A11, A12), two outlets (B12, B13) and a control End (C3) processed, this fourth speed bit switch valve (44) has two entrances (A13, A14), two outlets (B14, B15) and a control End (C4) processed, the entrance (A3) of this first switch electromagnetic valve (31), the entrance (A4) of this second switch electromagnetic valve (32), the 3rd The entrance (A5) of switch electromagnetic valve (33) is all connected with this working connection (10) with the entrance (A6) of the 4th switch electromagnetic valve (34), The outlet (B4) of this first switch electromagnetic valve (31) is connected with the control end (C1) of this first driving switch valve (41), and this second is opened The outlet (B5) closing electromagnetic valve (32) is connected with the control end (C2) of this second driving switch valve (42), the 3rd switch electromagnetic valve (33) outlet (B6) is connected with the control end (C3) of this third gear switch valve (43), the going out of the 4th switch electromagnetic valve (34) Mouth (B7) is connected with the control end (C4) of this fourth speed bit switch valve (44), the two entrances of this first driving switch valve (41) (A7, A8) is connected with two outlets (B2, B3) of this flow control electromagnetic valve (21) respectively, this second driving switch valve (42) Two entrances (A9, A10) are connected with two outlets (B2, B3) of this flow control electromagnetic valve (21) respectively, and this third gear is opened The two entrances (A11, A12) closing valve (43) are connected with two outlets (B2, B3) of this flow control electromagnetic valve (21) respectively, should The two entrances (A13, A14) of fourth speed bit switch valve (44) respectively with two of this flow control electromagnetic valve (21) outlets (B2, B3) it is connected, two outlet (B8, B9) two oil with this first shift cylinder (51) respectively of this first driving switch valve (41) Chamber is connected, two outlet (B10, B11) two with this second shift cylinder (52) respectively of this second driving switch valve (42) Oil pocket is connected, and two of this third gear switch valve (43) export (B12, B13) respectively with the 3rd shift cylinder (53) two Individual oil pocket is connected, two of this fourth speed bit switch valve (44) outlets (B14, B15) respectively with the 4th shift cylinder (54) Two oil pockets are connected.

5. the hydraulic gear-shifting control system of double-clutch automatic gearbox as claimed in claim 4 is it is characterised in that this pressure Control the Stress control proportional solenoid that electromagnetic valve (11) is side valve type, this flow control electromagnetic valve (21) is the flow of side valve type Control proportional solenoid, this first driving switch valve (41), this second driving switch valve (42), this third gear switch valve (43) It is the pilot operated directional control valve of side valve type with this fourth speed bit switch valve (44).

6. the hydraulic gear-shifting control system of double-clutch automatic gearbox as claimed in claim 4 is it is characterised in that this hydraulic pressure Shifting control system also includes first clutch electromagnetic valve (71), second clutch electromagnetic valve (72) and clutch relief valve (73), this first clutch electromagnetic valve (71) has entrance (A15) and outlet (B16), and this second clutch electromagnetic valve (72) has There are entrance (A16) and outlet (B17), the entrance (A15) of this first clutch electromagnetic valve (71) and this second clutch electromagnetic valve (72) entrance (A16) is all connected with this working connection (10), this clutch relief valve (73) have two entrances (A17, A18), Two outlets (B18, B19) and a control end (C5), the two entrances (A17, A18) of this clutch relief valve (73) respectively with The outlet (B16) of this first clutch electromagnetic valve (71) is connected with the outlet (B17) of this second clutch electromagnetic valve (72), should be from Two outlets (B18, B19) of clutch relief valve (73) are connected with first clutch (T1) and second clutch (T2) respectively, should The outlet of the two of which switch electromagnetic valve to the 4th switch electromagnetic valve (31,32,33,34) for the first switch electromagnetic valve connects simultaneously It is connected to the control end (C5) of this clutch relief valve (73).

7. the hydraulic gear-shifting control system of double-clutch automatic gearbox as claimed in claim 4 is it is characterised in that this hydraulic pressure Shifting control system also includes the 5th switch electromagnetic valve (35), park control valve (81) and parking oil cylinder (82), the 5th switch Electromagnetic valve (35) has entrance (A19) and outlet (B20), and this park control valve (81) has entrance (A20), two outlets (B21, B22) and control end (C6), the entrance (A19) of the 5th switch electromagnetic valve (35) and the entrance of this park control valve (81) (A20) all it is connected with this working connection (10), the outlet (B20) of the 5th switch electromagnetic valve (35) and this park control valve (81) Control end (C6) is connected, two outlet (B21, B22) two with this parking oil cylinder (82) respectively of this park control valve (81) Oil pocket is connected.

8. double-clutch automatic gearbox as claimed in claim 4 hydraulic gear-shifting control system it is characterised in that this first The two of which switch electromagnetic valve to the 4th switch electromagnetic valve (31,32,33,34) for the switch electromagnetic valve is integrated into one three four Logical switch electromagnetic valve (36), two other in this first switch electromagnetic valve to the 4th switch electromagnetic valve (31,32,33,34) Switch electromagnetic valve is integrated into the switch electromagnetic valve (37) of another 3-position 4-way.

9. the hydraulic gear-shifting control system of the double-clutch automatic gearbox as described in any one of claim 1 to 8, its feature exists Also include second pressure in, this hydraulic gear-shifting control system and control electromagnetic valve (12) and working connection pressure-regulating valve (18), this Two electromagnetic pressure control valves (12) have entrance (A21) and outlet (B23), and this working connection pressure-regulating valve (18) has entrance (A22), two outlets (B24, B25) and two control ends (C7, C8), this second pressure controls the entrance of electromagnetic valve (12) (A21) it is connected with this working connection (10), this second pressure controls the outlet (B23) of electromagnetic valve (12) and this working connection pressure to adjust First control end (C7) of valve (18) is connected, the entrance (A22) of this working connection pressure-regulating valve (18) and the second control end (C8) It is connected with this working connection (10), the first outlet (B24) of this working connection pressure-regulating valve (18) is connected with fuel tank (63) simultaneously, should The second outlet (B25) of working connection pressure-regulating valve (18) leads to lubrication oil circuit.