CN209229008U - A kind of CVT hydraulic control system - Google Patents
A kind of CVT hydraulic control system Download PDFInfo
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- CN209229008U CN209229008U CN201821936781.5U CN201821936781U CN209229008U CN 209229008 U CN209229008 U CN 209229008U CN 201821936781 U CN201821936781 U CN 201821936781U CN 209229008 U CN209229008 U CN 209229008U
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Abstract
The utility model relates to a kind of CVT hydraulic control systems, comprising: double acting oil pump, working connection and auxiliary oil way；And main oil-way pressure regulating valve, fluid torque-converter hydraulic control module, clutch hydraulic pressure control module and oil cylinder hydraulic control module on the working connection；The main oil-way pressure regulating valve is connected to the double acting oil pump by the first branch and working connection of working connection；The clutch hydraulic pressure control module includes clutch pressure control valve, clutch interlock valve, first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve, 4th end of the clutch pressure control valve is connected to the working connection, the third end of the clutch pressure control valve is connect with the first end of the clutch interlock valve, the second end of the clutch interlock valve is separately connected the first end of the first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve, the third end of the first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve is separately connected D gear clutch and R gear clutch.
Description
Technical field
The utility model relates to a kind of hydraulic control system, in particular to a kind of CVT hydraulic control system.
Background technique
The clutch of stepless transmission (CVT) includes forward clutch and reverse clutch, Clutch input shaft and fluid power
Torque converter output shaft is connected, and clutch output shaft connects continuously variable transmission belt wheel mechanism；The torque of engine passes through hydraulic moment changeable
Device passes to clutch, by the combination and opening of different clutches, realizes advance, retroversion, parking and the neutral gear function of vehicle
Energy.
In traditional CVT (stepless transmission), D keeps off (forward gear) and R gear (reversing gear) clutch usually shares an electricity
Magnet valve control, and the switching that hand-operated valve realizes D gear with R gear is controlled by shift zipper.During clutch is oil-filled, TCU
(automatic gear-box control unit) during draining, can not pass through software by solenoid valve active control slope
Demarcate active control pressure release slope.Therefore, it is difficult to avoid impact of vehicle during static P-R-N-D puts into gear, vehicle is influenced
Comfort property.
In addition, vehicle is engine speed is lower, larger (such as speed ratio cataclysm causes oil cylinder quick for flow rate of hydraulic system consumption
Movement) when, oil mass is difficult to ensure in oil cylinder or oil duct, easily steel band is made to skid.
Utility model content
The utility model in view of the deficiency of the prior art, it is hydraulic to provide a kind of CVT for improving vehicle comfort
Control system.
The technical solution that the utility model solves above-mentioned technical problem is as follows: a kind of CVT hydraulic control system, comprising:
Double acting oil pump；
The working connection 50 being connect with the oil outlet of double acting oil pump；
Main oil-way pressure regulating valve 19, fluid torque-converter hydraulic control module, clutch fluid on the working connection is voltage-controlled
Molding block and oil cylinder hydraulic control module；
The first end of the main oil-way pressure regulating valve 19 is connected to described double by the first branch 501 and working connection of working connection
Act on the oil outlet of oil pump 2；
Auxiliary oil way 51；The auxiliary oil way 51 is connect with the second branch 502 of the working connection；
The clutch hydraulic pressure control module includes clutch pressure control valve 26, clutch interlock valve 27, the first electromagnetism
Pressure regulator valve 28 and the second electromagnetic voltage adjusting valve 29, the 4th end of the clutch pressure control valve 26 are connected to the working connection, institute
The third end for stating clutch pressure control valve 26 is connect with the first end 27-1 of the clutch interlock valve, the clutch interlocking
The second end 27-2 of valve be separately connected the first electromagnetic voltage adjusting valve first end 28-1 and the second electromagnetic voltage adjusting valve
The third end 29-3 of one end 29-1, the third end 28-3 of the first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve connects respectively
Connect D gear clutch 30 and R gear clutch 31.
The beneficial effects of the utility model are: controlling D gear respectively using the first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve
Clutch and R keep off clutch, realize that clutch is oil-filled and draining function controllable simultaneously, the static shift of farthest promotion are relaxed
Adaptive；It can realize that D gear switches with R gear, solves traditional CVT and is only capable of through zipper of mechanically shifting gears by the automatically controlled order of TCU
The problem of realizing P-R-N-D switching；
In addition, D gear clutch and R gear clutch can be prevented in combination with leading to CVT row using clutch interlock valve 27
Star row is impaired or to lose control of one's vehicle；Clutch pressure control valve 26 may insure the first electromagnetic voltage adjusting valve 28 or the second electromagnetic voltage adjusting
When valve 29 fails, pass through working connection oil pressure force disconnect clutch oil circuit oil pressure.
Further, the fluid torque-converter hydraulic control module includes converter pressure regulator valve 20, third electromagnetic voltage adjusting
The first end of valve 21 and the 4th electromagnetic voltage adjusting valve 40, the converter pressure regulator valve 20 connects the master by auxiliary oil way 51
The second branch 502 of oil circuit, the first end at the third end of the converter pressure regulator valve 20 and the third electromagnetic voltage adjusting valve
21-1 connection, the third electromagnetic voltage adjusting valve third end 21-3 are connect with fluid torque-converter, the third electromagnetic voltage adjusting valve second
The connection of the third end of 21-2 and the 4th electromagnetic voltage adjusting valve 40 is held, the first end of the 4th electromagnetic voltage adjusting valve 40 is connected to auxiliary oil
Road 51；
The oil cylinder hydraulic control module includes actuating cylinder pressure regulator valve 34 and slave cylinder pressure regulator valve 35, the active oil
The first end of cylinder pressure regulator valve 34 and slave cylinder pressure regulator valve 35 is respectively connected to the working connection, the actuating cylinder pressure regulator valve 34
Pass through actuating cylinder oil circuit and slave cylinder oil circuit and the actuating cylinder 38 and institute respectively with the slave cylinder pressure regulator valve 35
State the connection of slave cylinder 39.
Further, the first auxiliary hydraulic pressure control module is additionally provided on the working connection, first auxiliary hydraulic pressure controls mould
Block includes the motor 4 of the first electronic pump 3, the second electronic pump 5, the first electronic pump 3 of driving and the second electronic pump 5, check valve 6, opens
Stop oil circuit relief valve 7, electro-hydraulic parking oil circuit relief valve 8 and electro-hydraulic parking pressure regulator valve 9, first electronic pump 3 passes through the list
The working connection 50, second electronic pump 5 and the electro-hydraulic parking oil circuit relief valve 8 is connected to valve 6 electro-hydraulic to stay with described
The first end of vehicle pressure regulator valve 9 connects, and the oil discharge outlet at the electro-hydraulic 9 third end of parking pressure regulator valve passes through the start and stop oil circuit relief valve
7 connect with the check valve 6.
Beneficial effect using above-mentioned further technical solution is: by increasing electronic pump, so as in engine misses
Hydraulic system (oil duct, oil cylinder etc.) can also be full of oil liquid constantly, so that it is guaranteed that when engine start and stop fast starting performance.
It further, further include the second auxiliary hydraulic pressure control module, the second auxiliary hydraulic pressure control module includes accumulator
12 and electromagnetic switch valve 11, the third end of the electromagnetic switch valve 11 connects the working connection 50, the electromagnetic switch valve 11
First end connects the accumulator 12.
Further, the second auxiliary hydraulic pressure control module further includes energy storage pressure sensor 10, the accumulator pressure
Force snesor 10 is connect with the electromagnetic switch valve 11 and accumulator 12.
Beneficial effect using above-mentioned further technical solution is: vehicle is engine speed is lower, flow rate of hydraulic system
When consuming larger (such as speed ratio cataclysm leads to oil cylinder quick acting), oil is released stress to maintain needed for working connection by accumulator
Flow, prevent under extreme operating condition steel band to skid.
Further, the oil cylinder hydraulic control module further includes that actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary are adjusted
Pressure valve 33, the actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary pressure-regulating valve 33 are respectively arranged on the actuating cylinder tune
Between pressure valve 34 and the slave cylinder pressure regulator valve 35 and auxiliary oil way.
The third end of the actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary pressure-regulating valve 33 respectively with the active
Oil cylinder pressure regulator valve 34 is connected with the 4th end of the slave cylinder pressure regulator valve 35, the actuating cylinder auxiliary pressure-regulating valve 32 and described
The first end of slave cylinder auxiliary pressure-regulating valve 31 is respectively connected to auxiliary oil way.
Further, actuating cylinder pressure sensor is respectively equipped on the actuating cylinder oil circuit and the slave cylinder oil circuit
36 and slave cylinder pressure sensor 37.
Further, further include oil pump switching valve 16, the oil outlet of the double acting oil pump 2 include the first oil outlet 2-1 and
Second oil outlet 2-2, the first oil outlet 2-1 and the second oil outlet 2-2 is separately connected positioned at the oil pump switching valve 16
Two oil inlets on one end, the oil outlet on the 16 third end of oil pump switching valve are connected to oil filter 1 and described pair
Act on oil pump 2 between, the 4th end of the oil pump switching valve 16 be separately connected the main oil-way pressure regulating valve third end 19-3 and
The first end at the third end of the 5th electromagnetic voltage adjusting valve 17, the 5th electromagnetic voltage adjusting valve 17 connects the auxiliary oil way.
It further, further include oil sump 42 for storing hydraulic oil, the double acting oil pump 2 is set to the oil sump
42 downstream provides hydraulic oil by the oil filter 1 from 42 draw oil of oil sump for hydraulic system；The master
The first branch 501 that 4th end of oil circuit pressure regulator valve 19 passes through feedback oil circuit connection to the working connection 50.
Further, working connection damper 13, working connection safety valve 14 and pressure reducing valve 15 are additionally provided on the working connection, it is described
The first end of pressure reducing valve 15 connects the working connection 50, and the third end of the pressure reducing valve 15 connects auxiliary oil way 51, the decompression
4th end of valve 15 feeds back to auxiliary oil way 51 by feeding back oil circuit.
Further, further include atomizer, be connected with pressure filter, water in turn between the atomizer and third electromagnetic voltage adjusting valve
Cold oil cooler and air-cooled oil cooler.
It further, further include working connection auxiliary pressure-regulating valve 18, the first end of the working connection auxiliary pressure-regulating valve 18 passes through auxiliary
The opinion 511 of the first of oil circuit is helped to be connected to auxiliary oil way 51, the third end of the working connection auxiliary pressure-regulating valve 18 connects the master
The second end of oil circuit pressure regulator valve 19.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the first auxiliary hydraulic pressure control module in the utility model；
Fig. 3 is the second auxiliary hydraulic pressure control module in the utility model；
Fig. 4 is clutch hydraulic pressure control module in the utility model；
Fig. 5 is oil cylinder hydraulic control module in the utility model；
Fig. 6 is fluid torque-converter hydraulic control module in the utility model；
In the accompanying drawings, list of designations represented by each label is as follows: 1, oil filter, 2, double acting oil pump, 2-1,
One oil outlet, 2-2, the second oil outlet, the 3, first electronic pump, 4, motor, the 5, second electronic pump, 6, check valve, 7, start and stop oil circuit
Relief valve, 8, electro-hydraulic parking oil circuit relief valve, 9, electro-hydraulic parking pressure regulator valve, 10, energy storage pressure sensor, 11, electromagnetic switch
Valve, 12, accumulator, 13: working connection damper, 14, working connection safety valve, 15, pressure reducing valve, 16, oil pump switching valve, the 17, the 5th
Electromagnetic voltage adjusting valve, 18, working connection auxiliary pressure-regulating valve, 19, main oil-way pressure regulating valve, the first end of 19-1, main oil-way pressure regulating valve, 19-
2, the second end of main oil-way pressure regulating valve, the third end of 19-3, main oil-way pressure regulating valve, the 4th end of 19-4, main oil-way pressure regulating valve,
20, TC pressure regulator valve, 21, third electromagnetic voltage adjusting valve, the first end of 21-1, third electromagnetic voltage adjusting valve, 21-2, third electromagnetic voltage adjusting valve
Second end, the third end of 21-3, third electromagnetic voltage adjusting valve, the 4th end of 21-4, third electromagnetic voltage adjusting valve, 22, air-cooled oil it is cold
Device, 23, water cooling oil cooler, 24, pressure filter, 25, atomizer, 26, clutch pressure control valve, 26-1, clutch pressure control
The first end of valve, the second end of 26-2, clutch pressure control valve, the third end of 26-3, clutch pressure control valve, 26-4,
4th end of clutch pressure control valve, 27, clutch interlock valve, the first end of 27-1, clutch interlock valve, 27-2, clutch
The second end of device interlock valve, the third end of 27-3, clutch interlock valve, the 4th end of 27-4, clutch interlock valve, 28, first
Electromagnetic voltage adjusting valve, the first end of 28-1, the first electromagnetic voltage adjusting valve, the second end of 28-2, the first electromagnetic voltage adjusting valve, 28-3, first
The third end of electromagnetic voltage adjusting valve, the 4th end of 28-4, the first electromagnetic voltage adjusting valve, the 29, second electromagnetic voltage adjusting valve, 29-1, the second electricity
The first end of magnetic pressure regulator valve, the second end of 29-2, the second electromagnetic voltage adjusting valve, the third end of 29-3, the second electromagnetic voltage adjusting valve, 29-
4, the 4th end of the second electromagnetic voltage adjusting valve, 30, D gear clutch, 31, R gear clutch, 32, actuating cylinder auxiliary pressure-regulating valve, 33,
Slave cylinder auxiliary pressure-regulating valve, 34, actuating cylinder pressure regulator valve, 35, slave cylinder pressure regulator valve, 36, actuating cylinder pressure sensor,
37, slave cylinder pressure sensor, 38, actuating cylinder, 39, slave cylinder, the 40, the 4th electromagnetic voltage adjusting valve, 41, double acting oil pump
Power source, 42, oil sump；
50, working connection, 501, the first branch of working connection, 502, the second branch of working connection, 503, the third of working connection
Branch, 504, the 4th branch of working connection, 505, the 5th branch of working connection, 506, the 6th branch of working connection, 507, main oil
7th branch on road, 508, the 8th branch of working connection, 509, the 9th branch of working connection；
51, auxiliary oil way, 511, the first branch of auxiliary oil way, 512, the second branch of auxiliary oil way, 513, auxiliary oil
The third branch on road, 514, the 4th branch of auxiliary oil way, 515, the 5th branch of auxiliary oil way.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
This specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the utility model enforceable qualifications, therefore not
Has technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are practical new not influencing this
Under the effect of type can be generated and the purpose that can reach, should all still fall in the revealed technology contents of the utility model can cover
In the range of.
" left side " and " right side " in the utility model is described with the left and right in Figure of description, this is practical new
" first end ", " second end ", " third end " and " the 4th end " of type respectively correspond " lower end " of solenoid valve in Figure of description,
" right end ", " upper end " and " left end ".
As shown in figs 1 to 6, a kind of CVT hydraulic control system, comprising:
Double outlet mechanical pumps, the double acting oil pump 2 and double acting can be used in double acting oil pump 2, the double acting oil pump 2
Oil pump power source 41 connects, and the double acting oil pump power source 41 uses motor, and the double acting oil pump 2 passes through oil filter 1
Protrude into the lower part of the oil sump.
The working connection 50 being connect with the oil outlet of double acting oil pump 2；
Main oil-way pressure regulating valve 19, fluid torque-converter hydraulic control module, clutch hydraulic pressure on the working connection 50
Control module and oil cylinder hydraulic control module；
The first end 19-1 of the main oil-way pressure regulating valve is connected to by the first branch 501 and working connection 50 of working connection
The oil outlet of the double acting oil pump 2；
It further include working connection auxiliary pressure-regulating valve 18, the first end of the working connection auxiliary pressure-regulating valve 18 passes through auxiliary oil way
The first branch 511 is connected to auxiliary oil way 51, and the third end of the working connection auxiliary pressure-regulating valve 18 connects the main oil-way pressure regulating
The second end 19-2 of valve.
Auxiliary oil way 51；The auxiliary oil way 51 is connect with the second branch 502 of the working connection；
The clutch hydraulic pressure control module includes clutch pressure control valve 26, clutch interlock valve 27, the first electromagnetism
Normal high type can be selected in pressure regulator valve 28 and the second electromagnetic voltage adjusting valve 29, the first electromagnetic voltage adjusting valve 28 and the second electromagnetic voltage adjusting valve 29
Or normally low-type；4th end of the clutch pressure control valve 26 is connected to the main oil by the third branch 503 of working connection
Road 50, the third end of the clutch pressure control valve 26 are connect with the first end 27-1 of the clutch interlock valve, it is described from
The first end 26-1 of clutch pressure-control valve is connected to auxiliary oil way 51, the clutch by the third branch 513 of auxiliary oil way
The second end 27-2 of device interlock valve is separately connected the first end of the first electromagnetic voltage adjusting valve 28 and the second electromagnetic voltage adjusting valve
The third end 29-3 of 29-1, the third end 28-3 of the first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve is separately connected D
It keeps off clutch 30 and R keeps off clutch 31.
When the high pressure that vehicle is when N is kept off or P is kept off, and the clutch interlock valve 27 provides in middle position, pressure reducing valve 15
Oil is connected to by the clutch interlock valve 27 with the first electromagnetic voltage adjusting valve 28 and the second electromagnetic voltage adjusting valve 29 simultaneously；When vehicle exists
When D is kept off, the first electromagnetic voltage adjusting valve 28 makes D keep off the combination of clutch 30 by current order control outlet pressure (such as Fig. 1), pushes away simultaneously
The spool of dynamic clutch interlock valve 27 is turned right movement, make the high pressure oil of 26 rear end of clutch pressure control valve only with the first electromagnetism
Pressure regulator valve 28 is connected to, and the second electromagnetic voltage adjusting valve 29 is connected to 42 shell of oily bottom；When vehicle is when R is kept off, the second electromagnetic voltage adjusting valve 29 is logical
Overcurrent order control outlet pressure combines R gear clutch 31, while the spool of clutch interlock valve 27 being pushed to turn left sidesway
It is dynamic, it is connected to the high pressure oil of clutch pressure control valve third end 26-3 only with the second electromagnetic voltage adjusting valve 29, the first electromagnetic voltage adjusting
Valve 28 is connected to oil sump 42；Clutch and R are kept off by the first electromagnetic voltage adjusting valve 28 and 29 independent control D of the second electromagnetic voltage adjusting valve
Clutch is kept off, can solve traditional CVT hydraulic control system when D, R keep off and switching, draining time uncontrollable disadvantage solves simultaneously
Traditional CVT that determined is only capable of the problem of realizing P-R-N-D switching by zipper of mechanically shifting gears.
Clutch pressure control valve 26 may insure the first electromagnetic voltage adjusting valve 28 or the failure of the second electromagnetic voltage adjusting valve 29
When, by working connection oil pressure force disconnect clutch oil circuit oil pressure, when working connection oil pressure is higher than a certain default oil pressure (such as 8bar)
When, clutch pressure control valve 26 is mobile toward right end by working connection oil pressure active force, and spring is further compressed, pressure reducing valve 15
The pressure oil of rear end can be connected to by clutch pressure control valve 26 with clutch interlock valve 27；When working connection pressure is lower than default
When oil pressure, clutch pressure control valve 26 by spring force effect toward moving left, 15 rear end high pressure oil of pressure reducing valve is enclosed, from
Clutch interlock valve 27 is connected to oil sump, and clutch pressure is forced switching not by the first electromagnetic voltage adjusting valve 28 or the at this time
The control of two electromagnetic voltage adjusting valves 29.
The fluid torque-converter hydraulic control module includes converter pressure regulator valve 20, third electromagnetic voltage adjusting valve 21 and
Four electromagnetic voltage adjusting valves 40, the first end of the converter pressure regulator valve 20 connect the of the working connection by auxiliary oil way 51
Two branches 502, the third end of the converter pressure regulator valve 20 are connect with the first end 21-1 of the third electromagnetic voltage adjusting valve,
The third electromagnetic voltage adjusting valve third end 21-3 is connect with fluid torque-converter (being not drawn into figure), the third electromagnetic voltage adjusting valve
The connection of the third end of second end 21-2 and the 4th electromagnetic voltage adjusting valve 40, the first end of the 4th electromagnetic voltage adjusting valve 40 pass through auxiliary
The second branch 512 of oil circuit is helped to be connected to auxiliary oil way 51；
The switching of fluid torque-converter state is controlled by third electromagnetic voltage adjusting valve 21 and the 4th electromagnetic voltage adjusting valve 40, third electromagnetism
21 left side spring-loaded of valve, left side refer to the 4th end 21-4 positioned at third solenoid valve, and right side is by the 4th electromagnetic voltage adjusting valve
The effect of 40 output pressures, right side refer to the second end 21-2 positioned at third solenoid valve, and 40 output pressure of the 4th electromagnetic voltage adjusting valve can
The current order dynamic regulation issued according to TCU；When 40 output pressure of the 4th electromagnetic voltage adjusting valve is lower than a certain preset value, third
Electromagnetic voltage adjusting valve 21 is turned right movement under spring force, and TC (fluid torque-converter) is bending moment state, working connection tune at this time
The oil discharge outlet at 19 third end of pressure valve is connected to the release oil pocket (TC Release oil pocket) of fluid torque-converter, and is flowed through using oil pocket
(TC Apply oil pocket) is connected to oil cooler 22 afterwards；When 40 output pressure of the 4th electromagnetic voltage adjusting valve is higher than a certain preset value, the
Three electromagnetic voltage adjusting valves 21 are turned left, and side is mobile, and TCApply oil pocket is connected to converter pressure regulator valve 20, oil cooler 22 and main oil
The second level oil communication that road pressure regulator valve 19 exports, TC Release oil pocket are connected to oil sump, and TC is lockup state at this time. TC
Detent pressure can dynamically be controlled by converter pressure regulator valve 20.20 left side of converter pressure regulator valve is by the 4th electromagnetism tune
The effect of 40 oil pressure of pressure valve, right side is by TC locking feedback pressure and spring-force driven dual, when TC detent pressure is lower than goal pressure
When, the side of turning left under the action of the 4th electromagnetic voltage adjusting 40 output pressure of valve of converter pressure regulator valve 20 is mobile, makes pressure reducing valve 15
It is connected to TC Apply oil pocket until TC detent pressure reaches the spool stress balance of goal pressure converter pressure regulator valve 20；
When TC detent pressure is higher than goal pressure, converter pressure regulator valve 20 is turned right movement under the action of feedback force, and will
TC Apply oil pocket is connected to oil sump, so that TC detent pressure is reduced, until TC detent pressure reaches the change of goal pressure fluid power
The spool stress balance of square device pressure regulator valve 20.
The oil cylinder hydraulic control module includes actuating cylinder pressure regulator valve 34 and slave cylinder pressure regulator valve 35, the active oil
The first end of cylinder pressure regulator valve 34 and slave cylinder pressure regulator valve 35 pass through respectively working connection the 4th branch 504 and working connection the 5th
Branch 505 is connected to the working connection 50, and the actuating cylinder pressure regulator valve 34 and the slave cylinder pressure regulator valve 35 pass through respectively
Actuating cylinder oil circuit and slave cylinder oil circuit are connect with the actuating cylinder 38 and the slave cylinder 39.
The oil cylinder hydraulic control module further includes actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary pressure-regulating valve 33,
The actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary pressure-regulating valve 33 are respectively arranged on 34 He of actuating cylinder pressure regulator valve
Between the slave cylinder pressure regulator valve 35 and auxiliary oil way 51.The actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary are adjusted
5th branch 515 of the 4th branch 514 and auxiliary oil way that the first end of pressure valve 33 passes through auxiliary oil way respectively is connected to described
Auxiliary oil way 51.
38 pressure of actuating cylinder is controlled by actuating cylinder auxiliary pressure-regulating valve 32 and actuating cylinder pressure regulator valve 34, actuating cylinder
32 output pressure of auxiliary pressure-regulating valve can send current order dynamic regulation by TCU.34 left side of actuating cylinder pressure regulator valve is by actively
The effect of oil cylinder auxiliary pressure-regulating valve 32 oil pressure and spring force, right side are acted on by 38 feedback pressure of actuating cylinder, work as actuating cylinder
When 38 pressure are lower than goal pressure, actuating cylinder pressure regulator valve 34 is past under the action of actuating cylinder 32 output pressure of auxiliary pressure-regulating valve
Right side is mobile, is connected to working connection with actuating cylinder until actuating cylinder pressure reaches goal pressure actuating cylinder pressure regulator valve 34
Spool stress balance；When 38 pressure of actuating cylinder is higher than goal pressure, effect of the actuating cylinder pressure regulator valve 34 in feedback force
Under side of turning left it is mobile, and 38 pressure oil of actuating cylinder is connected to oil sump 42, so that 38 pressure of actuating cylinder is reduced, until leading
Dynamic 38 pressure of oil cylinder reaches the spool stress balance of goal pressure actuating cylinder pressure regulator valve 34.
Slave cylinder pressure is controlled by slave cylinder auxiliary pressure-regulating valve 33 and actuating cylinder pressure regulator valve 35, and slave cylinder is auxiliary
Help 33 output pressure of pressure regulator valve that can send current order dynamic regulation by TCU.35 left side of slave cylinder pressure regulator valve is by driven oil
The effect of cylinder auxiliary pressure-regulating valve 33 oil pressure and spring force, right side is acted on by slave cylinder feedback pressure, when slave cylinder pressure
When lower than goal pressure, slave cylinder pressure regulator valve 35 is turned right sidesway under the action of slave cylinder 33 output pressure of auxiliary pressure-regulating valve
It is dynamic, it is connected to working connection with slave cylinder 39 until slave cylinder pressure reaches the spool of goal pressure slave cylinder pressure regulator valve 35
Stress balance；When 39 pressure of slave cylinder is higher than goal pressure, slave cylinder pressure regulator valve 35 is turned left under the action of feedback force
Side is mobile, and 39 pressure oil of slave cylinder is connected to oil sump 42, so that 39 pressure of slave cylinder is reduced, until slave cylinder
39 pressure reach the spool stress balance of goal pressure slave cylinder pressure regulator valve 35.
It is additionally provided with the first auxiliary hydraulic pressure control module on the working connection, the first auxiliary hydraulic pressure control module includes the
One electronic pump 3, drives motor 4, check valve 6, the start and stop oil circuit of the first electronic pump 3 and the second electronic pump 5 to let out at second electronic pump 5
Pressure valve 7, electro-hydraulic parking oil circuit relief valve 8 and electro-hydraulic parking pressure regulator valve 9, first electronic pump 3 are connected by the check valve 6
The extremely working connection 50, second electronic pump 5 and the electro-hydraulic parking oil circuit relief valve 8 and the electro-hydraulic parking pressure regulator valve 9
First end connection, the oil discharge outlet at the electro-hydraulic 9 third end of parking pressure regulator valve passes through the start and stop oil circuit relief valve 7 and the list
It is connected to valve 6.
It further include the second auxiliary hydraulic pressure control module, the second auxiliary hydraulic pressure control module includes energy storage pressure sensing
The third end of device 10, accumulator 12 and electromagnetic switch valve 11, the electromagnetic switch valve 11 connects the working connection 50, the electromagnetism
The first end of switch valve 11 connects the accumulator 12, the energy storage pressure sensor 10 and the electromagnetic switch valve and accumulation of energy
Device 12 is all connected with.
By the pre-stored high pressure oil of accumulator 12, vehicle may be implemented engine speed is lower, hydraulic system stream
When amount consumes larger (such as speed ratio cataclysm leads to oil cylinder quick acting), oil is released stress to maintain main oil by accumulator 12
Flow needed for road prevents steel band under extreme operating condition from skidding.By the signal of energy storage pressure sensor 10, system can be in vehicle
When revolving speed is higher, flow is sufficient, electromagnetic switch valve 11 is opened, it is oil-filled to accumulator 12 by double acting oil pump 2, when accumulator 12
When oil pressure reaches preset pressure, electromagnetic switch valve 11 is closed；When flow system flow deficiency, electromagnetic valve switch valve 11, accumulation of energy are opened
The high pressure oil stored in advance is discharged to active, slave cylinder, it is ensured that oil pressure oil cylinder working-pressure is not less than goal pressure, prevents steel band
It skids or Transmission Ratio Control is inaccurate.
Be respectively equipped on the actuating cylinder oil circuit and the slave cylinder oil circuit actuating cylinder pressure sensor 36 and from
Dynamic oil cylinder working-pressure sensor 37.
It further include oil pump switching valve 16, the oil outlet of the double acting oil pump 2 includes that the first oil outlet 2-1 and second goes out
Hydraulic fluid port 2-2, the first oil outlet 2-1 and the second oil outlet 2-2 are separately connected in 16 first end of oil pump switching valve
Two oil inlets, the oil outlet on the 16 third end of oil pump switching valve be connected to oil filter 1 and the double acting oil
Between pump 2, the 4th end of the oil pump switching valve 16 is separately connected third end and the 5th electromagnetism of the main oil-way pressure regulating valve 19
The first end at the third end of pressure regulator valve 17, the 5th electromagnetic voltage adjusting valve 17 connects the auxiliary oil way.
It further include the oil sump 42 for storing hydraulic oil, the double acting oil pump 2 is set under the oil sump 42
Trip, by the oil filter 1 from 42 draw oil of oil sump, provides hydraulic oil for hydraulic system；The working connection tune
The first branch 501 that 4th end of pressure valve 19 passes through feedback oil circuit connection to the working connection 50.
Working connection damper 13, working connection safety valve 14 and pressure reducing valve 15, the working connection are additionally provided on the working connection
Damper 13 and working connection safety valve 14 pass through the connection of the 7th branch 507 of the 6th branch 506 of working connection and working connection respectively
To the working connection 50, the first end of the pressure reducing valve 15 is connected to the working connection 50 by the second branch 502 of working connection,
The third end of the pressure reducing valve 15 connects auxiliary oil way 51, and the 4th end of the pressure reducing valve 15 feeds back to auxiliary by feeding back oil circuit
Oil circuit 51.
The main oil-way pressure regulating valve 19 and 18 collective effect of working connection auxiliary pressure-regulating valve, dynamic-control system oil circuit pressure
Power, when working connection auxiliary pressure-regulating valve 18 fails, system can pass through 14 pressure release of working connection safety valve.Pressure reducing valve 15 can be
5th electromagnetic voltage adjusting valve 17, working connection auxiliary pressure-regulating valve 18, the 4th electromagnetic voltage adjusting valve 40, first the 28, second electricity of electromagnetic voltage adjusting valve
Magnetic pressure regulator valve 29, actuating cylinder auxiliary pressure-regulating valve 32 and slave cylinder auxiliary pressure-regulating valve 33 provide a stable input pressure
(such as 15bar).
Further include atomizer 25, be connected in turn between the atomizer 25 and third electromagnetic voltage adjusting valve 21 pressure filter 24,
Water cooling oil cooler 23 and air-cooled oil cooler 22.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of CVT hydraulic control system characterized by comprising
Double acting oil pump；
The working connection being connect with the oil outlet of double acting oil pump；
Main oil-way pressure regulating valve, fluid torque-converter hydraulic control module on the working connection, clutch hydraulic pressure control module
With oil cylinder hydraulic control module；
The first end of the main oil-way pressure regulating valve is connected to the double acting oil pump by the first branch and working connection of working connection
Oil outlet；
Auxiliary oil way；The auxiliary oil way is connect with the second branch of the working connection；
The clutch hydraulic pressure control module include clutch pressure control valve, clutch interlock valve, the first electromagnetic voltage adjusting valve and
Second electromagnetic voltage adjusting valve, the 4th end of the clutch pressure control valve are connected to the working connection, the clutch pressure control
The third end of valve processed is connect with the first end of the clutch interlock valve, and the second end of the clutch interlock valve is separately connected institute
State the first end of the first electromagnetic voltage adjusting valve and the second electromagnetic voltage adjusting valve, the first electromagnetic voltage adjusting valve and second electromagnetism
The third end of pressure regulator valve is separately connected D gear clutch and R gear clutch.
2. CVT hydraulic control system according to claim 1, which is characterized in that the fluid torque-converter hydraulic control mould
Block includes converter pressure regulator valve, third electromagnetic voltage adjusting valve and the 4th electromagnetic voltage adjusting valve, the converter pressure regulator valve
First end connects the second branch of the working connection by auxiliary oil way, the third end of the converter pressure regulator valve with it is described
The first end of third electromagnetic voltage adjusting valve connects, and third electromagnetic voltage adjusting valve third end is connect with fluid torque-converter, the third
Electromagnetic voltage adjusting valve second end is connected with the third end of the 4th electromagnetic voltage adjusting valve, and the first end of the 4th electromagnetic voltage adjusting valve is connected to
Auxiliary oil way；
The oil cylinder hydraulic control module includes actuating cylinder pressure regulator valve and slave cylinder pressure regulator valve, the actuating cylinder pressure regulator valve
The working connection, the actuating cylinder pressure regulator valve and the slave cylinder are respectively connected to the first end of slave cylinder pressure regulator valve
Pressure regulator valve passes through actuating cylinder oil circuit respectively and slave cylinder oil circuit is connect with the actuating cylinder and the slave cylinder.
3. CVT hydraulic control system according to claim 1, which is characterized in that it is auxiliary to be additionally provided with first on the working connection
Hydraulic control module is helped, the first auxiliary hydraulic pressure control module includes the first electronic pump, the second electronic pump, the first electronics of driving
Motor, check valve, start and stop oil circuit relief valve, electro-hydraulic parking oil circuit relief valve and the electro-hydraulic parking pressure regulation of pump and the second electronic pump
Valve, first electronic pump are connected to the working connection, second electronic pump and the electro-hydraulic parking by the check valve
Oil circuit relief valve is connect with the first end of the electro-hydraulic parking pressure regulator valve, and the oil discharge outlet at the electro-hydraulic parking pressure regulator valve third end is logical
The start and stop oil circuit relief valve is crossed to connect with the check valve.
4. CVT hydraulic control system according to claim 1, which is characterized in that further include the second auxiliary hydraulic pressure control mould
Block, the second auxiliary hydraulic pressure control module include accumulator and electromagnetic switch valve, the third end connection of the electromagnetic switch valve
The first end of the working connection, the electromagnetic switch valve connects the accumulator.
5. CVT hydraulic control system according to claim 2, which is characterized in that the oil cylinder hydraulic control module is also wrapped
Include actuating cylinder auxiliary pressure-regulating valve and slave cylinder auxiliary pressure-regulating valve, the actuating cylinder auxiliary pressure-regulating valve and slave cylinder auxiliary
Pressure regulator valve is respectively arranged between the actuating cylinder pressure regulator valve and the slave cylinder pressure regulator valve and auxiliary oil way；
The third end of the actuating cylinder auxiliary pressure-regulating valve and slave cylinder auxiliary pressure-regulating valve respectively with the actuating cylinder pressure regulation
Valve is connected with the 4th end of the slave cylinder pressure regulator valve, and the actuating cylinder auxiliary pressure-regulating valve and slave cylinder auxiliary are adjusted
The first end of pressure valve is respectively connected to auxiliary oil way.
6. CVT hydraulic control system according to claim 2, which is characterized in that the actuating cylinder oil circuit and it is described from
Actuating cylinder pressure sensor and slave cylinder pressure sensor are respectively equipped on dynamic oil path in oil cylinder.
7. CVT hydraulic control system according to claim 1, which is characterized in that further include oil pump switching valve, the double cropping
It include the first oil outlet and the second oil outlet with the oil outlet of oil pump, first oil outlet and the second oil outlet are separately connected position
In two oil inlets in the oil pump switching valve first end, the oil outlet on the oil pump switching valve third end is connected to
Between oil filter and the double acting oil pump, the 4th end of the oil pump switching valve is separately connected the of the main oil-way pressure regulating valve
The first end at the third end at three ends and the 5th electromagnetic voltage adjusting valve, the 5th electromagnetic voltage adjusting valve connects the auxiliary oil way.
8. CVT hydraulic control system according to claim 7, which is characterized in that further include the oil for storing hydraulic oil
Bottom case, the double acting oil pump are set to the downstream of the oil sump, hydraulic from oil sump absorption by the oil filter
Oil provides hydraulic oil for hydraulic system；4th end of the main oil-way pressure regulating valve passes through feedback oil circuit connection to the working connection
The first branch.
9. CVT hydraulic control system according to claim 1-8, which is characterized in that also set on the working connection
There are working connection damper, working connection safety valve and pressure reducing valve, the first end of the pressure reducing valve connects the working connection, the decompression
The third end of valve connects auxiliary oil way, and the 4th end of the pressure reducing valve feeds back to auxiliary oil way by feeding back oil circuit.
10. CVT hydraulic control system according to claim 1-8, which is characterized in that it further include atomizer, institute
It states and is connected with pressure filter, water cooling oil cooler and air-cooled oil cooler between atomizer and third electromagnetic voltage adjusting valve in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936781.5U CN209229008U (en) | 2018-11-23 | 2018-11-23 | A kind of CVT hydraulic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936781.5U CN209229008U (en) | 2018-11-23 | 2018-11-23 | A kind of CVT hydraulic control system |
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| Publication Number | Publication Date |
|---|---|
| CN209229008U true CN209229008U (en) | 2019-08-09 |
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ID=67504242
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201821936781.5U Active CN209229008U (en) | 2018-11-23 | 2018-11-23 | A kind of CVT hydraulic control system |
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| Country | Link |
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| CN (1) | CN209229008U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237017A (en) * | 2018-11-23 | 2019-01-18 | 山东上汽汽车变速器有限公司 | A kind of CVT hydraulic control system |
| CN114370501A (en) * | 2021-12-28 | 2022-04-19 | 贵州凯星液力传动机械有限公司 | Hydraulic transmission control system |
-
2018
- 2018-11-23 CN CN201821936781.5U patent/CN209229008U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109237017A (en) * | 2018-11-23 | 2019-01-18 | 山东上汽汽车变速器有限公司 | A kind of CVT hydraulic control system |
| CN109237017B (en) * | 2018-11-23 | 2023-08-18 | 山东上汽汽车变速器有限公司 | CVT hydraulic control system |
| CN114370501A (en) * | 2021-12-28 | 2022-04-19 | 贵州凯星液力传动机械有限公司 | Hydraulic transmission control system |
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