CN206845874U - A kind of hydraulic control system of automatic speed changer - Google Patents
A kind of hydraulic control system of automatic speed changer Download PDFInfo
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- CN206845874U CN206845874U CN201720523175.XU CN201720523175U CN206845874U CN 206845874 U CN206845874 U CN 206845874U CN 201720523175 U CN201720523175 U CN 201720523175U CN 206845874 U CN206845874 U CN 206845874U
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Abstract
The utility model discloses a kind of hydraulic control system of automatic speed changer, including the three parts oil circuit being made up of oil feeding line, gearshift control oil circuit, torque-converters and cooling and lubricating oil circuit；The input connection oil groove of oil feeding line, fluid is exported to gearshift control oil circuit and torque-converters and cooling and lubricating oil circuit.The utility model realizes the control to each gear of six speed automatic transmissions, and the Hydraulically-controproportional proportional valve output fluid through proportional solenoid valve control directly will not be controlled to clutch or brake, but be introduced into C1 interlock valves and C2 interlock valves.Corresponding clutch/brake is output to by the different hydraulic fluid port of two interlock valves and different working positions again, realize the interlocking between each gear, when dead electricity occurs, hydraulic system can automatically select suitable gear according to current shift and work on, vehicle can sail out of danger zone rapidly, improve the security of vehicle.
Description
【Technical field】
The utility model belongs to transmission technology field, is related to a kind of hydraulic control system of automatic speed changer.
【Background technology】
Control to automatic transmission is mainly realized by hydraulic system.Wherein to the control planning of system main oil pressure to becoming
The efficiency of fast device；The comfortableness and security of control and vehicle to gear shifting actuating mechanism are closely related.Control to main oil pressure,
Typically it is adjusted both at home and abroad using the feedback oil circuit of itself feedback and associated clutch, but this regulation is passive, and
Pressure regulation spectrum is very limited.Control to gear shifting actuating mechanism typically uses to be controlled one to one, this controlling party
Formula is simple, but interlocking can not be realized between gear, and when dead electricity occurs, automatic transmission can not enter suitable gear
Position, causes vehicle not move.
【Utility model content】
A kind of the shortcomings that the purpose of this utility model is to overcome above-mentioned prior art, there is provided automatic transmission hydraulic control
System, the system Hydraulic Elements characteristics of compact layout, system pressure regulating valve can be realized and actively adjusted；By the cut-off of magnetic valve electricity and
The cooperation of two interlock valves realizes the different gears of automatic transmission, and interlocking can be realized between gear, in dead electricity feelings
Automatic transmission can be automatically into suitable gear under condition.
To reach above-mentioned purpose, the utility model is achieved using following technical scheme：
A kind of hydraulic control system of automatic speed changer, including moistened by oil feeding line, gearshift control oil circuit, torque-converters and cooling
The three parts oil circuit of lubricating oil road composition；The input connection oil groove of oil feeding line, fluid is exported to gearshift control oil circuit and change
Square device and cooling and lubricating oil circuit.
The utility model, which further improves, to be：
Oil feeding line includes oil groove, oil pump and system pressure regulating valve, and the entrance of oil pump is connected with oil groove, outlet and system
Pressure-regulating valve is connected；One end of recycling oil circuit is connected between oil pump and oil groove, the other end and torque-converters and cooling and lubricating
Oil circuit is connected；The outlet of system pressure regulating valve is connected with principal pressure oil circuit and cooling and lubricating oil circuit respectively.
Be additionally provided with first filter between oil groove and oil pump, recycling oil circuit be connected to first filter and oil pump it
Between.
The second filter, the pipeline between oil pump and the second filter are additionally provided between oil pump and system pressure regulating valve
On be connected with overflow valve.
Gearshift control oil circuit includes pressure-reducing valve, the first proportion magnetic valve, the second ratio electromagnetism being connected with control oil circuit
Valve, the 3rd proportion magnetic valve, the 4th proportion magnetic valve, the 5th proportion magnetic valve, magnetic valve, C1 interlock valves and C2 interlock valves；
The first buffer and the first Hydraulically-controproportional proportional valve are connected on first proportion magnetic valve respectively, is divided on the second proportion magnetic valve
The second buffer and the second Hydraulically-controproportional proportional valve are not connected, and the 3rd buffer and the 3rd hydraulic control are connected respectively on the 3rd proportion magnetic valve
Proportioning valve, the 4th buffer and the 4th Hydraulically-controproportional proportional valve are connected respectively on the 4th proportion magnetic valve, is connected on the 5th proportion magnetic valve
Connect the 5th Hydraulically-controproportional proportional valve；
C1 interlock valves and C2 interlock valves are two ten logical hydraulic valves, are controlled by the output circuit of magnetic valve；First
The oil-out of Hydraulically-controproportional proportional valve, the second Hydraulically-controproportional proportional valve and the 3rd Hydraulically-controproportional proportional valve with C1 interlock valves and the difference of C2 interlock valves
Hydraulic fluid port is connected, and leads to C1 clutches, C2 clutches after internal conversion, then by other hydraulic fluid ports of C1 interlock valves and C2 interlock valves
Device, B1 brakes and B3 brakes；
The oil-out of 4th Hydraulically-controproportional proportional valve is connected with B2 brakes；
The oil inlet of pressure-reducing valve is connected with principal pressure oil circuit, and the stable oil pressure obtained after pressure-reducing valve depressurizes is by controlling oil
Road supply magnetic valve, the first proportion magnetic valve, the second proportion magnetic valve, the 3rd proportion magnetic valve, the 4th proportion magnetic valve and
5th proportion magnetic valve；
First Hydraulically-controproportional proportional valve, the second Hydraulically-controproportional proportional valve, the 3rd Hydraulically-controproportional proportional valve, the 4th Hydraulically-controproportional proportional valve, the 5th hydraulic control
Proportioning valve, pressure-reducing valve, the drain tap of C1 interlock valves and C2 interlock valves are connected by draining oil circuit with counterbalance valve；
The output oil of 5th Hydraulically-controproportional proportional valve is connected with the control terminal of lockup clutch.
Torque-converters and cooling and lubricating oil circuit include torque-converters, TC flow valves, TC pressure valve, oil cooler and lubrication pressure regulator valve；
Fluid from oil pump is delivered to TC flows after system pressure adjusts valve regulation oil pressure from the outlet 3 of system pressure regulating valve
Valve and TC pressure valve, and the entrance by TC flow valves into torque-converters, then TC flow valves are returned to by the outlet of torque-converters, then go to
TC pressure valve, oil cooler is connected with the outlet 4 of TC pressure valve.
The outlet of oil cooler is connected with the 3rd filter.
TC pressure valve is 3 position-5 way proportioning valve, as residing for the pressure of system pressure regulation valve outlet 3 carries out feedback regulation
Position, when come oil pressure it is high when, a part of fluid will from the outlet 5 of TC pressure valve enter recycling oil circuit；TC pressure valve
The fluid of outlet 4 is first gone to oil cooler and cooled down, then after filter filters, automatic transmission is lubricated, and lubricates
Oil pressure is adjusted by lubrication pressure regulator valve, and when lubrication pressure is too high, lubrication pressure regulator valve will be opened, and a part of fluid will enter again
Circulating oil path.
Compared with prior art, the utility model has the advantages that：
Tthe utility model system Hydraulic Elements characteristics of compact layout, realizes the control to each gear of six speed automatic transmissions,
Hydraulically-controproportional proportional valve output fluid through proportional solenoid valve control directly will not be controlled to clutch or brake, but first
Into C1 interlock valves and C2 interlock valves.Again by the different hydraulic fluid port of two interlock valves and different working positions be output to accordingly from
Clutch/brake, the interlocking between each gear is realized, when dead electricity occurs, hydraulic system can be selected automatically according to current shift
Select suitable gear to work on, vehicle can sail out of danger zone rapidly, improve the security of vehicle.The utility model system
System main oil pressure and lubrication pressure carry out co- controlling by multiple passages, and wherein main oil pressure can be adjusted with passing ratio magnetic valve
Section, realizes the pressure demand under different operating modes, effectively reduces oil pump consumption power, improves transmission efficiency.
【Brief description of the drawings】
Fig. 1 is the overall structure diagram of Tthe utility model system.
Wherein：1- oil grooves, 2,4,30- filters, 3- oil pumps, 5- overflow valves, 6- system pressure regulating valves, 7- pressure-reducing valves,
8,9,12,15,18,21- proportion magnetic valves, 10,13,16,19- buffers, 11,14,17,20-22- Hydraulically-controproportional proportional valves, 23- electricity
Magnet valve, 24-C1 interlock valves, 25-C2 interlock valves, 26- counterbalance valves, 27-TC flow valves, 28-TC pressure valve, 29- oil coolers, 31-
Lubrication pressure regulator valve, 32-C1 clutches, 33-C2 clutches, 34-B1 brakes, 35-B2 brakes, 36-B3 brakes, 37- is again
Circulating oil path, 38- principal pressure oil circuits, 39- control oil circuits, 40- draining oil circuits, 41- lockup clutches, 42- torque-converters.
【Embodiment】
The utility model is described in further detail below in conjunction with the accompanying drawings：
Referring to Fig. 1, the utility model hydraulic control system of automatic speed changer is made up of three parts oil circuit, is fuel feeding oil respectively
Road, gearshift control oil circuit, torque-converters and cooling and lubricating oil circuit.
Oil feeding line is by oil groove 1, first filter 2, the second filter 4, oil pump 3, overflow valve 5, and system pressure regulation
Valve 6, proportion magnetic valve 8 and recycling oil circuit 37 collectively form.Wherein first filter 2 is arranged between oil pump and oil groove, can
So that the big pollutant of size in oil groove to be removed, after the second filter 4 is arranged on oil pump high-pressure oil outlet, ensure to enter gearshift control
Fluid in liquefaction road reaches the cleannes of hydraulic system requirement.By the fluid of the second filter 4, adjusted into system pressure
The operating pressure of system pressure regulating valve 6 can be adjusted for the hydraulic fluid port 1 of valve 6, the output oil pressure of passing ratio magnetic valve 8,
Export respectively again to gearshift control oil circuit and torque-converters and cooling and lubricating oil circuit.
Gearshift control oil circuit is by pressure-reducing valve 7, the first proportion magnetic valve 9, the second proportion magnetic valve 12, the 3rd proportion magnetic valve
15, the 4th proportion magnetic valve 18, the 5th proportion magnetic valve 21, magnetic valve 23, the first buffer 10, the second buffer 13, the 3rd
Buffer 16, the 4th buffer 19, the first Hydraulically-controproportional proportional valve 11, the second Hydraulically-controproportional proportional valve 14, the 3rd Hydraulically-controproportional proportional valve 17, the 4th
Hydraulically-controproportional proportional valve 20, the 5th Hydraulically-controproportional proportional valve 22, C1 interlock valves 24 and C2 interlock valves 25, and counterbalance valve 26 form.
Torque-converters and cutting oil route TC flow valves 27, TC pressure valve 28, oil cooler 29, filter 30 and lubrication are adjusted
The grade of pressure valve 31 forms.Filter 30 can decide whether to choose to install part according to the oil cleanliness grade of speed changer.
In gearshift control oil circuit, the first proportion magnetic valve 9 and the second proportion magnetic valve 12 are normal high magnetic valves, the 3rd ratio
Magnetic valve 15, the 4th proportion magnetic valve 18, the 5th proportion magnetic valve 21 is normal-low magnetic valve, and magnetic valve 23 is normal-low magnetic valve,
It can be proportion magnetic valve or switch valve.Principal pressure oil circuit 38 is connected with the hydraulic fluid port 2 of system pressure regulating valve 6, work
Make pressure to be adjusted by system pressure regulating valve 6.First Hydraulically-controproportional proportional valve 11, the second Hydraulically-controproportional proportional valve 14, the 3rd Hydraulically-controproportional proportional valve
17, the oil-feed port of the 4th Hydraulically-controproportional proportional valve 20 and the 5th Hydraulically-controproportional proportional valve 22 connects with principal pressure oil circuit 38, in different apertures
Under, export different operating oil pressures.Pressure-reducing valve 7 is disposed with principal pressure oil circuit 38, the pressure of control oil circuit 39 is remained steady
Calmly, it is all magnetic valve oil-feed port fuel feeding, when the first proportion magnetic valve 9, the second proportion magnetic valve 12, the 3rd proportion magnetic valve
15, the 4th proportion magnetic valve 18, when the 5th proportion magnetic valve 21 is in path, the oil pressure from control oil circuit 39 is through ratio
Exported after electromagnetism valve regulation, as the first Hydraulically-controproportional proportional valve of pilot control oil pressure cntrol 11, the second Hydraulically-controproportional proportional valve 14, the 3rd liquid
Control proportioning valve 17, the 4th Hydraulically-controproportional proportional valve 20, the aperture of the 5th Hydraulically-controproportional proportional valve 22, in the first Hydraulically-controproportional proportional valve 11, the second liquid
Proportioning valve 14 is controlled, the 3rd Hydraulically-controproportional proportional valve 17, is parallel with the first buffer 10, the second buffer before the 4th Hydraulically-controproportional proportional valve 20
13, the 3rd buffer 16, the 4th buffer 19, reduce and eliminate proportion magnetic valve and open impact of the moment to Hydraulically-controproportional proportional valve,
Improve shifting comfort.
C1 interlock valves 24 and C2 interlock valves 25 in gearshift control oil circuit, for two ten logical direction valves, entered by magnetic valve 23
Row control.First Hydraulically-controproportional proportional valve 11, the second Hydraulically-controproportional proportional valve 14, the 3rd Hydraulically-controproportional proportional valve 17 output pressure oil enter this two
Valve, and exported respectively to C1 clutches 32, C2 clutches 33, B1 brakes 34, B3 brakes 36 by different combinations.Work as hair
During raw dead electricity, from the first Hydraulically-controproportional proportional valve 11, the pressure oil of the second Hydraulically-controproportional proportional valve 14, in C1 interlock valves and C2 interlock valves
Can be automatically into suitable gear under cooperating.
First Hydraulically-controproportional proportional valve 11, the second Hydraulically-controproportional proportional valve 14, the 3rd Hydraulically-controproportional proportional valve 17, the 4th Hydraulically-controproportional proportional valve 20,
5th Hydraulically-controproportional proportional valve 22 is realized by draining oil circuit 40 with the drain tap of C1 interlock valves 24, C2 interlock valves 25 and connected, and is passed through
Counterbalance valve 26 connects with oil groove, it is ensured that not air inlet in draining oil circuit 40.
System pressure regulating valve 6 is adjusted jointly by four road binders pressures, is the control oil that proportion magnetic valve 8 exports respectively
Pressure, the locking oil pressure that Hydraulically-controproportional proportional valve 22 exports, the oil pressure of the hydraulic fluid port 4 of C1 interlock valves 24 output, and the oil of system pressure regulating valve 6
The oil pressure of the output of mouth 2 carry out feedback controls.
Lubrication pressure regulator valve 31 is adjusted jointly by two-way oil pressure, comes from the lubrication pressure of oil cooler, and C2 clutches respectively
The operating oil pressure of device 33.
Principle and the course of work of the present utility model：
Main oil pressure regulating valve, while can also passing ratio magnetic valve root in addition to receiving the feedback oil pressure of system different circuit
Corresponding control oil pressure is exported according to Vehicular behavior, and then realizes the active control to system main oil pressure.
The operating oil pressure of Hydraulically-controproportional proportional valve output does not lead directly to clutch/brake, but is introduced into two interlock valves,
Designed between the two interlock valves by oil circuit, then operating oil pressure is led into different clutch/brakes, at two interlock valves
When different positions, the operating oil pressure from same Hydraulically-controproportional proportional valve can enter different clutch/brakes.
Two magnetic valves in system are designed to normal high magnetic valve, when dead electricity occurs, they by output control oil pressure,
Hydraulically-controproportional proportional valve corresponding to opening, principal pressure oil enter interlock valve by Hydraulically-controproportional proportional valve, through interlock valve internal oil passages, by this two
Road performs oil circuit and leads to corresponding clutch/brake, realizes limp-home function.
The working condition of clutch/brake is as shown in the table during each gear of automatic transmission, corresponding to ★ is represented in table
Clutch or brake are in running order.
Solenoid valve situation during corresponding each gear work is as shown in the table, and ★ is represented to solenoid valve in table, and zero
Powered off after representing of short duration power supply.
(1) N is kept off.To the first proportion magnetic valve 9, the second proportion magnetic valve 12, the 3rd proportion magnetic valve 15 is powered, therefore only
There is the 3rd Hydraulically-controproportional proportional valve 17 to be in path, the fluid in principal pressure oil circuit 38, which passes through the 3rd Hydraulically-controproportional proportional valve 17 and enters C1, to be interlocked
Valve 24 and C2 interlock valves 25.C1 interlock valves are in the case of no pilot pressure, in bottom, from the 3rd Hydraulically-controproportional proportional valve 17
Fluid be blocked, and the fluid for entering the hydraulic fluid port 1 of C2 interlock valves 25 then directly goes to B3 brakes 36 by hydraulic fluid port 2, realizes
Neutral.
(2) R is kept off.To the first proportion magnetic valve 9, the 3rd proportion magnetic valve 15 is powered, the second Hydraulically-controproportional proportional valve 14, the 3rd liquid
Control proportioning valve 17 is in path.Principal pressure oil circuit 38 goes to the same neutral of oil circuit of B3 brakes 36.Second Hydraulically-controproportional proportional valve 14
Outlet connects with the hydraulic fluid port 6 of C2 interlock valves 25, and goes to B1 brakes 34 by hydraulic fluid port 7.Realize and reverse gear.
(3) 1 gears.Give magnetic valve 23 of short duration power supply, control the fluid in oil circuit 39 to act on C1 interlock valves 24 and C2 interlockings
On valve 25, two valves are in upper.To the second proportion magnetic valve 12, the 3rd proportion magnetic valve 15 is powered, the first Hydraulically-controproportional proportional valve 11,
3rd Hydraulically-controproportional proportional valve 17 is in path.The outlet of first Hydraulically-controproportional proportional valve 11 connects with the hydraulic fluid port 7 of C1 interlock valves 24, and passes through
Hydraulic fluid port 10 goes to C1 clutches 32.Powered off again to magnetic valve 23, under C2 interlock valves 25 will be returned in the presence of back-moving spring
Position, and C1 interlock valves 24 under the feedback effect of hydraulic fluid port 10, will be maintained at upper, i.e., the outlet of the first Hydraulically-controproportional proportional valve 11 is all the time
For C1 clutch feeds.And principal pressure oil circuit 38 goes to the same neutral of oil circuit of B3 brakes 36.Realize 1 gear.
(4) 2 gears.Powered to the second proportion magnetic valve 12, the 4th proportion magnetic valve 18, magnetic valve 23.Magnetic valve 23 works
Afterwards, the fluid in oil circuit 39 is controlled to act in C1 interlock valves 24 and C2 interlock valves 25, two valves are in upper.First hydraulic control ratio
The Hydraulically-controproportional proportional valve 20 of valve 11 and the 4th is in path.Described in same 1 gear of oil circuit of C1 clutches 32.And the 4th Hydraulically-controproportional proportional valve
20 outlet is directly connected with B2 brakes 35, and now C1 clutches and B2 brake operations, realize 2 gears.
(5) 3 gears.Powered to the second proportion magnetic valve 12, the 3rd proportion magnetic valve 15, magnetic valve 23.Towards C1 clutches
32 oil circuit is the same as described in 1 gear.After the power supply of 3rd proportion magnetic valve 15, outlet and the principal pressure oil circuit 38 of the 3rd Hydraulically-controproportional proportional valve 17
Communicate, pressure oil liquid will reach 1 mouthful of 6 mouthfuls of C1 interlock valves and C2 interlock valves simultaneously.Magnetic valve 23 is powered, C1 interlock valves 24
It is in C2 interlock valves 25 upper.1 mouthful of closing of C2 interlock valves, and 6 mouthfuls of C1 interlock valves lead to 8 mouthfuls, then go to C2 interlockings
5 mouthfuls of valve, 5 mouthfuls are communicated with 7 mouthfuls, and B1 brakes 34 are gone to by 7 mouthfuls.Now C1 clutches and B1 brake operations, realize 3
Gear.
(6) 4 gears.Only powered to magnetic valve 23.Now C1 interlock valves 24 and C2 interlock valves 25 are in upper.First hydraulic control ratio
Example valve 11, the outlet of the second Hydraulically-controproportional proportional valve 14 communicates with principal pressure oil circuit 38.Oil circuit towards C1 clutches 32 keeps off institute with 1
State.The outlet fluid of second Hydraulically-controproportional proportional valve 14 leads to 6 mouthfuls of C2 interlock valves, then towards 8 mouthfuls, finally leads to clutch from 10 mouthfuls
C2.Now C1 clutches and the work of C2 clutches, realize 4 gears.
(7) 5 gears.Powered to the first proportion magnetic valve 9, the 3rd proportion magnetic valve 15, magnetic valve 23.Now C1 interlock valves 24
It is in upper with C2 interlock valves 25.Described in clutch C2 same 4 gear of oil circuit.After the power supply of 3rd proportion magnetic valve 15, B1 systems
The oil circuit that dynamic device 34 works with 3 gears it is described.Now C2 clutches and B1 brake operations, realize 5 gears.
(8) 6 gears.To the first proportion magnetic valve 9, the 4th proportion magnetic valve 18 is powered, and magnetic valve 23 powers off.C1 interlock valves 24
In the presence of back-moving spring, bottom is returned to, and 10 mouthfuls of feedback oil pressures of C2 interlock valves act on the top of C2 interlock valves, make
C2 interlock valves are maintained at upper.Described in clutch C2 same 4 gear of oil circuit.And the outlet of the 4th Hydraulically-controproportional proportional valve 20 directly with
B2 brakes 35 are connected, and now C2 clutches and B2 brake operations, realize 6 gears.
When dead electricity occurs, all magnetic valve power-off.Wherein the first proportion magnetic valve 9 and the second proportion magnetic valve 12 are normal
High magnetic valve, maximum pressure can be exported and control the first Hydraulically-controproportional proportional valve 11 and the second Hydraulically-controproportional proportional valve 14, make its aperture maximum, its
Outlet communicates with principal pressure oil circuit 38.Hydraulic system can be by the work from the first Hydraulically-controproportional proportional valve 11 and the second Hydraulically-controproportional proportional valve 14
Make oil pressure to be worked on automatically into correspondingly gear according to the oil circuit of current gear, it is as shown in the table.
| Gear | Dead electricity gear |
| N/R | N |
| 1 | 3 |
| 2,3,4,5 | 4 |
| 6 | 5 |
(a) when speed changer is in N/R gears, dead electricity occurs.Now C1 interlock valves 24 and C2 interlock valves 25 are in bottom.
Oil pressure from Hydraulically-controproportional proportional valve 11 first reaches the hydraulic fluid port 7 of C1 interlock valves 24, and the hydraulic fluid port 5 of C2 interlock valves 25 is entered by hydraulic fluid port 8,
And this hydraulic fluid port is closed.The oil pressure of Hydraulically-controproportional proportional valve 14 reaches the hydraulic fluid port 6 of C2 interlock valves 25, and goes to B1 brakes 34 from hydraulic fluid port 7.
Now only have an executive component B1 brake 34 to work, realize neutral.
(b) when speed changer is in 1 gear, dead electricity occurs.The oil circuit that C1 clutches are gone to from Hydraulically-controproportional proportional valve 11 is kept not
Become.The oil pressure of Hydraulically-controproportional proportional valve 14 reaches the hydraulic fluid port 6 of C2 interlock valves 25, and goes to B1 brakes 34 from hydraulic fluid port 7.Now perform
Element C1 clutches 32 and B1 brakes 34 work, and speed changer enters 3 gears.
(c) when speed changer is in 2/3 gear, C2 interlock valves 25 are in upper, when magnetic valve 23 powers off, in back-moving spring
In the presence of can return to the next work.But the inertia of C2 interlock valves 25 and response time are much larger than Hydraulically-controproportional proportional valve 14, therefore
During generation dead electricity, reach the hydraulic fluid port 6 of C2 interlock valves 25 rapidly from the oil pressure of Hydraulically-controproportional proportional valve 14, now C2 interlock valves 25 also in
Upper, the fluid of hydraulic fluid port 6 reaches hydraulic fluid port 10 by hydraulic fluid port 8, is locked in C2 interlock valves upper by feeding back, hydraulic fluid port 10 leads to C2
Clutch 33.The oil circuit that C1 clutches 32 are gone to from Hydraulically-controproportional proportional valve 11 keeps constant.That is now executive component C1 clutches 32
Worked with C2 clutches 33, speed changer enters 4 gears.
(d) when speed changer is in 4 gear, C1 interlock valves 24 and C2 interlock valves 25 are protected by the feedback oil pressure of hydraulic fluid port 10
Hold upper, dead electricity now occurs, magnetic valve 23 powers off, and oil circuit is not influenceed, speed changer is maintained at 4 gears.
(e) when speed changer is in 5 gear, C1 interlock valves 24 are in upper, when magnetic valve 23 powers off, in back-moving spring
The next work can be returned under effect.But the inertia of C1 interlock valves 24 and response time are much larger than Hydraulically-controproportional proportional valve 11, therefore send out
During raw dead electricity, the hydraulic fluid port 7 of C1 interlock valves 24 is reached rapidly from the oil pressure of Hydraulically-controproportional proportional valve 11, now C1 interlock valves 24 are also in upper
Position, hydraulic fluid port 7 connects with hydraulic fluid port 10, is locked in C1 interlock valves 24 upper by feeding back, hydraulic fluid port 10 leads to C1 clutches 32.From liquid
The oil circuit that control proportioning valve 14 goes to C2 clutches 33 keeps constant.That is now executive component C1 clutches 32 and the work of C2 clutches 33
Make, speed changer enters 4 gears.
(f) when speed changer is in 6 gear, dead electricity occurs.The oil circuit that C2 clutches 33 are gone to from Hydraulically-controproportional proportional valve 14 is kept
It is constant.The oil pressure of Hydraulically-controproportional proportional valve 11 reaches the hydraulic fluid port 7 of C1 interlock valves 24, and now C1 interlock valves 24 are in bottom, hydraulic fluid port 7 and oil
Mouth 8 connects, then goes to the hydraulic fluid port 5 of C2 interlock valves, and C2 interlock valves are in upper, and hydraulic fluid port 5 and hydraulic fluid port 7 communicate, and hydraulic fluid port 7 goes to B1 systems
Dynamic device 34.I.e. now executive component C2 clutches 33 and B1 brakes 34 work, and speed changer enters 5 gears.
From the fluid of oil pump 3 after the regulation of system pressure regulating valve 6, a part of fluid from outlet 3 go to torque-converters and
Cooling and lubricating oil circuit.The fluid connects with TC flow valves 27 and TC pressure valve 28.Enter entering for torque-converters 42 from TC flow valves 27
Mouthful, fluid returns to TC flow valves 27 from the outlet of torque-converters 42, then goes to TC pressure valve 28.TC pressure valve 28 is a 3 position-5 way
Proportioning valve, it carries out the location of feedback regulation by the outlet 3 of system pressure regulating valve 6, when come oil pressure it is high when, one
Fluid is divided to enter recycling oil circuit 37 from the outlet 5 of valve.The fluid of the outlet 4 of TC pressure valve 28 is first gone to oil cooler 29 and carried out
Cooling, then after the filtering of filter 30, automatic transmission is lubricated, lubrication pressure is adjusted by lubrication pressure regulator valve 31
Section, when lubrication pressure is too high, lubrication pressure regulator valve 31 will be opened, and a part of fluid will enter recycling oil circuit 37.Filter 30
To choose to install part, can decide whether to install according to the oil cleanliness grade of speed changer.
When being powered to proportion magnetic valve 21, the fluid of principal pressure oil circuit 38 reaches locking clutch by Hydraulically-controproportional proportional valve 22
Device 41, torque-converters enter locking operating mode.Locking oil pressure acts on the top of TC flow valves 27 simultaneously, is operated in it upper.This
When the fluid from system pressure regulating valve 6 will not enter back into torque-converters 42, the low pressure fluid of lubricant passage way is from TC flow valves 27
It is lubricated into torque-converters 42.
System pressure regulating valve 6 is adjusted jointly by four road binders pressures, is the control oil that proportion magnetic valve 8 exports respectively
Pressure, the locking oil pressure that Hydraulically-controproportional proportional valve 22 exports, the oil pressure of the hydraulic fluid port 4 of C1 interlock valves 24 output, and the oil of system pressure regulating valve 6
The feedback oil pressures of the output of mouth 2.The control oil pressure that wherein proportion magnetic valve 8 exports can enter according to the current operating mode of vehicle and gear
Row is actively adjusted, and under conditions of ensureing normal vehicle operation, main oil pressure is operated in most rational pressure limit, reduces oil pump
Loss, transmission efficiency is improved, reduces the oil consumption of vehicle.
Lubrication pressure regulator valve 31 is adjusted jointly by two-way oil pressure, comes from the lubrication pressure of oil cooler, and C2 clutches respectively
The operating oil pressure of device 33.
Above content is only to illustrate technological thought of the present utility model, it is impossible to limits protection model of the present utility model with this
Enclose, it is every according to the utility model proposes technological thought, any change done on the basis of technical scheme, each fall within this reality
Within protection domain with new claims.
Claims (8)
1. a kind of hydraulic control system of automatic speed changer, it is characterised in that including by oil feeding line, gearshift control oil circuit, bending moment
The three parts oil circuit of device and cooling and lubricating oil circuit composition；The input connection oil groove (1) of oil feeding line, fluid is exported to gear shift
Control oil circuit and torque-converters and cooling and lubricating oil circuit.
2. hydraulic control system of automatic speed changer according to claim 1, it is characterised in that oil feeding line includes oil groove
(1), oil pump (3) and system pressure regulating valve (6), the entrance of oil pump (3) are connected with oil groove (1), and outlet is adjusted with system pressure
Valve (6) is connected；One end of recycling oil circuit (37) is connected between oil pump (3) and oil groove (1), the other end and torque-converters and cooling
Lubricant passage way is connected；The outlet of system pressure regulating valve (6) is connected with principal pressure oil circuit (38) and cooling and lubricating oil circuit respectively.
3. hydraulic control system of automatic speed changer according to claim 2, it is characterised in that oil groove (1) and oil pump (3) it
Between be additionally provided with first filter (2), recycling oil circuit (37) is connected between first filter (2) and oil pump (3).
4. hydraulic control system of automatic speed changer according to claim 2, it is characterised in that oil pump (3) and system pressure
The second filter (4) is additionally provided between regulating valve (6), is connected with the pipeline between oil pump (3) and the second filter (4) excessive
Flow valve (5).
5. hydraulic control system of automatic speed changer according to claim 2, it is characterised in that gearshift control oil circuit includes equal
Pressure-reducing valve (7), the first proportion magnetic valve (9), the second proportion magnetic valve (12), the 3rd ratio electricity being connected with control oil circuit (39)
Magnet valve (15), the 4th proportion magnetic valve (18), the 5th proportion magnetic valve (21), magnetic valve (23), C1 interlock valves (24) and C2 are mutual
Locking-valve (25)；
The first buffer (10) and the first Hydraulically-controproportional proportional valve (11), the second ratio electricity are connected on first proportion magnetic valve (9) respectively
The second buffer (13) and the second Hydraulically-controproportional proportional valve (14) are connected on magnet valve (12) respectively, is distinguished on the 3rd proportion magnetic valve (15)
The 3rd buffer (16) and the 3rd Hydraulically-controproportional proportional valve (17) are connected, the 4th buffer is connected respectively on the 4th proportion magnetic valve (18)
(19) the 5th Hydraulically-controproportional proportional valve (22) and the 4th Hydraulically-controproportional proportional valve (20), is connected on the 5th proportion magnetic valve (21)；
C1 interlock valves (24) and C2 interlock valves (25) are two ten logical hydraulic valves, are controlled by the output circuit of magnetic valve (23)
System；The oil-out of first Hydraulically-controproportional proportional valve (11), the second Hydraulically-controproportional proportional valve (14) and the 3rd Hydraulically-controproportional proportional valve (17) is mutual with C1
Locking-valve (24) is connected with the different hydraulic fluid ports of C2 interlock valves (25), is interlocked after internal conversion, then by C1 interlock valves (24) and C2
Other hydraulic fluid ports of valve (25) lead to C1 clutches (32), C2 clutches (33), B1 brakes (34) and B3 brakes (36)；
The oil-out of 4th Hydraulically-controproportional proportional valve (20) is connected with B2 brakes (35)；
The oil inlet of pressure-reducing valve (7) is connected with principal pressure oil circuit, and the stable oil pressure obtained after pressure-reducing valve depressurizes is by controlling oil
Road (39) supply magnetic valve (8), the first proportion magnetic valve (9), the second proportion magnetic valve (12), the 3rd proportion magnetic valve (15),
4th proportion magnetic valve (18) and the 5th proportion magnetic valve (21)；
First Hydraulically-controproportional proportional valve (11), the second Hydraulically-controproportional proportional valve (14), the 3rd Hydraulically-controproportional proportional valve (17), the 4th Hydraulically-controproportional proportional valve
(20), the drain tap of the 5th Hydraulically-controproportional proportional valve (22), pressure-reducing valve (7), C1 interlock valves (24) and C2 interlock valves (25) is by letting out
Oil circuit (40) is connected with counterbalance valve (26)；
The output oil of 5th Hydraulically-controproportional proportional valve (22) is connected with the control terminal of lockup clutch (41).
6. hydraulic control system of automatic speed changer according to claim 2, it is characterised in that torque-converters and cutting oil
Road includes torque-converters (42), TC flow valves (27), TC pressure valve (28), oil cooler (29) and lubrication pressure regulator valve (31)；From oil
The fluid of pump (3) is delivered to TC streams after system pressure regulating valve (6) adjusts oil pressure, from the outlet 3 of system pressure regulating valve (6)
Valve (27) and TC pressure valve (28) are measured, and enters the entrance of torque-converters (42) by TC flow valves (27), then by torque-converters (42)
Outlet returns to TC flow valves (27), then goes to TC pressure valve (28), and oil cooler is connected with the outlet 4 of TC pressure valve (28)
(29)。
7. hydraulic control system of automatic speed changer according to claim 6, it is characterised in that the outlet of oil cooler (29) connects
It is connected to the 3rd filter (30).
8. hydraulic control system of automatic speed changer according to claim 7, it is characterised in that TC pressure valve (28) is three
Five logical proportioning valves, the location of feedback regulation is carried out by the pressure of system pressure regulating valve (6) outlet 3, when carrying out oil pressure height
When, a part of fluid will enter recycling oil circuit (37) from the outlet 5 of TC pressure valve (28)；The outlet 4 of TC pressure valve (28)
Fluid is first gone to oil cooler (29) and cooled down, then after filter (30) filtering, automatic transmission is lubricated, and lubricates
Oil pressure is adjusted by lubrication pressure regulator valve (31), and when lubrication pressure is too high, lubrication pressure regulator valve (31) will be opened, a part of fluid
Recycling oil circuit (37) will be entered.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523175.XU CN206845874U (en) | 2017-05-11 | 2017-05-11 | A kind of hydraulic control system of automatic speed changer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523175.XU CN206845874U (en) | 2017-05-11 | 2017-05-11 | A kind of hydraulic control system of automatic speed changer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061723A (en) * | 2017-05-11 | 2017-08-18 | 陕西法士特齿轮有限责任公司 | A kind of hydraulic control system of automatic speed changer |
| CN109307068A (en) * | 2018-11-23 | 2019-02-05 | 广州汽车集团股份有限公司 | The hydraulic system of auto-manual automatic transmission |
| CN114658843A (en) * | 2022-03-16 | 2022-06-24 | 陕西法士特齿轮有限责任公司 | Hydraulic control system of hybrid automatic transmission |
-
2017
- 2017-05-11 CN CN201720523175.XU patent/CN206845874U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061723A (en) * | 2017-05-11 | 2017-08-18 | 陕西法士特齿轮有限责任公司 | A kind of hydraulic control system of automatic speed changer |
| CN109307068A (en) * | 2018-11-23 | 2019-02-05 | 广州汽车集团股份有限公司 | The hydraulic system of auto-manual automatic transmission |
| CN109307068B (en) * | 2018-11-23 | 2023-10-03 | 广州汽车集团股份有限公司 | Hydraulic system of manual-automatic integrated automatic transmission |
| CN114658843A (en) * | 2022-03-16 | 2022-06-24 | 陕西法士特齿轮有限责任公司 | Hydraulic control system of hybrid automatic transmission |
| CN114658843B (en) * | 2022-03-16 | 2023-11-07 | 陕西法士特齿轮有限责任公司 | Hydraulic control system of hybrid automatic transmission |
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