CN208951283U - A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle - Google Patents
A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle Download PDFInfo
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- CN208951283U CN208951283U CN201821433274.XU CN201821433274U CN208951283U CN 208951283 U CN208951283 U CN 208951283U CN 201821433274 U CN201821433274 U CN 201821433274U CN 208951283 U CN208951283 U CN 208951283U
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Abstract
The utility model discloses a kind of hydraulic control system of automatic speed changer of commercial vehicle and commercial vehicles, including performer, high-pressure oil passage, low pressure oil way and at least two oil circuit switch units；Oil circuit switch unit includes reversal valve, control valve and switching circuit；Reversal valve and control valve in same oil circuit switch unit connect to form switching circuit；Oil circuit switch unit is connected to by switching circuit with performer one-to-one correspondence；High-pressure oil passage is connected to the reversal valve of each parallel connection；Low pressure oil way includes the first low pressure oil way and the second low pressure oil way, and the first low pressure oil way connects the reversal valve of each parallel connection, and the second low pressure oil way is connected to reversal valve and control valve simultaneously, and accesses the second low pressure oil way after the parallel connection of each oil circuit switch unit.The clutch combination pressure of hydraulic control system of automatic speed changer provided herein has stronger ride comfort, reduces clutch joint impact, and the time of oil circuit switching shortens.
Description
Technical field
The utility model relates to commercial vehicle and device hydraulic control system of automatic speed changer, in particular to one kind can be changed smoothly
The hydraulic control system of automatic speed changer of gear.
Background technique
With the development increasingly of automotive transmission industry, the hydraulic control scheme of speed changer is more and more, riding in tradition
Vehicle AT (automatic transmission, Automatic Transmission), DCT (double clutch gearboxes, Dual Clutch
Transmission) and in CVT (stepless transmission, Continuously Variable Transmission), hydraulic solution
It is more mature.But in commercial vehicle field, since current commercial vehicle is mostly MT (Manual Transmission, manual gear)
And AMT (automatic gear-box, it is the abbreviation of electric-controlled mechanical automatic gear-box), it is mostly electric-machine directly-driven or use in new energy field
Reduction gearbox, transmission control are seldom related to hydraulic control.
With the development of commercial vehicle, become a kind of trend using mixed dynamic speed changer in commercial vehicle, currently, although commercial vehicle
Mixed dynamic speed changer has had some hydraulic control schemes, but the existing generally existing following technology of these hydraulic control schemes lacks
It falls into:
One, smooth gear shifting requirement, i.e. the hydraulic control system pressure when switching gear is not achieved in hydraulic control system performance
Power adjusting is unstable, there is pause and transition in rhythm or melody sense, is easy to cause to impact to gearshift；
Two, oil-free in idle clutch oil circuit and plunger shaft, cause oil circuit switching time longer；
Three, solenoid valve control pressure is high, stringent to the control accuracy requirement of system,.
Utility model content
The purpose of this utility model is to provide a kind of hydraulic control system of automatic speed changer of commercial vehicle and commercial vehicle, with
It solves existing hydraulic control system performance and the technical issues of smooth gear shifting requires is not achieved.
To solve the above-mentioned problems, the technical solution of the utility model is:
A kind of hydraulic control system of automatic speed changer of commercial vehicle, including performer, high-pressure oil passage, low pressure oil way and
At least two oil circuit switch units；
The oil circuit switch unit includes reversal valve, control valve and switching circuit；Institute in same oil circuit switch unit
It states reversal valve and the control valve connects to form the switching circuit；Oil circuit switch unit is held by the switching circuit with described
Row device corresponds connection；
The high-pressure oil passage is connected to the reversal valve of each parallel connection；
The low pressure oil way includes the first low pressure oil way and the second low pressure oil way, and first low pressure oil way connects each parallel connection
Reversal valve, access second low pressure oil after the reversal valve and the control valve in same oil circuit switch unit are in parallel
Road.
Preferably, second low pressure oil way includes and the one-to-one proportional control valve of oil circuit switch unit, Ge Gesuo
It states and is connected in series between proportional control valve.
Preferably, low pressure oil way further includes pressure reducing valve, is accessed after first low pressure oil way and the parallel connection of the second low pressure oil way
The pressure reducing valve, the pressure reducing valve connect high-pressure oil passage.
Preferably, the high-pressure oil passage includes the main pressure regulator valve for exporting high pressure oil, after each reversal valve is in parallel described in access
Main pressure regulator valve.
Preferably, high-pressure oil passage further includes oil cooling machine, and the oil cooling machine connects the main pressure regulator valve.
It preferably, further include oil feeding line, the oil feeding line includes fuel tank, dynamical element and filter element, described
Hydraulic oil in fuel tank successively accesses high-pressure oil passage through the filter element and the dynamical element.
Preferably, the performer includes at least one clutch and at least one brake, the clutch, described
Brake connects one to one with switching circuit.
The application further includes a kind of commercial vehicle, which is characterized in that using hydraulic control system described in either a program as above.
Compared with the existing technology, the beneficial effects of the utility model are:
1, in the application, switching circuit and high-pressure oil passage share minor loop, which is high in the operating condition
Pressure oil is in a non-operative state low pressure oil, therefore performer conversion is when being in working condition, in the shared minor loop because
There is oil and make to shift gears more stable, there is no pause and transition in rhythm or melody sense, to improve clutch combination pressure ride comfort, reduce clutch engagement
Impact, meanwhile, the time of oil circuit switching shortens.
2, in the application, main pressure regulator valve does not directly control clutch combination pressure, therefore the application is to the control pressure of system
Power and control accuracy requirement reduce.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model hydraulic control system of automatic speed changer；
Fig. 2 is hydraulic schematic diagram under the utility model clutch working condition；
Fig. 3 is hydraulic schematic diagram under the utility model brake operation state.
Wherein, 1, control valve, 101, control valve port one, 102, control valve port two, 103, control valve port three, 2, reversal valve,
201, commutate valve port one, 202, commutation valve port two, 203, commutation valve port three, 204, commutation valve port four, 205, commutation valve port five, 3,
Main pressure regulator valve, 301, main pressure regulator valve port one, 302, main pressure regulator valve port two, 303, main pressure regulator valve port three, 4, pressure reducing valve, 401, decompression
Valve port one, 402, pressure relief valve port two, 403, pressure relief valve port three, 5, proportional control valve, 6, oil cooling machine, 7, fuel tank, 801, coarse filtration member
Part, 802, refined filtration element, 901, motor, 902, motor.
Specific embodiment
Below with reference to Fig. 1 to Fig. 3 to the hydraulic control system of automatic speed changer of commercial vehicle provided by the utility model into
The detailed description of row, the present embodiment are implemented under premised on technical solutions of the utility model, give detailed implementation
Mode and specific operating process, but the protection scope of the utility model is not limited to the following embodiments, those skilled in the art
In the range of not changing the spirit of the present invention and content, can it be modified and be polished.
Please refer to Fig. 1-3, a kind of hydraulic control system of automatic speed changer of commercial vehicle, including performer, high-pressure oil passage,
Low pressure oil way and at least two oil circuit switch units.
Performer is controlled by oil circuit switch unit, realizes the switching of working condition and off working state.It executes
Device includes at least one clutch and at least one brake, the specific number of clutch and brake according to gear need into
Row determines.It is mutually indepedent between each performer, the application for realizing the switching between clutch and brake, thus into
Row shift.
Be arranged in parallel between oil circuit switch unit, and under the coordination of high-pressure oil passage and low pressure oil way realize performer it
Between switching.Oil circuit switch unit includes reversal valve 2, control valve 1 and switching circuit；Commutation in same oil circuit switch unit
Valve 2 and control valve 1 connect to form the switching circuit by oil pipe；Switching circuit can be connected to low pressure oil way and be completely filled with liquid
Pressure oil；It can also be locally connected to high-pressure oil passage part and be partially filled with hydraulic oil.Oil circuit switch unit passes through switching circuit and holds
Row device corresponds connection, when a certain performer is in off working state, passes through low pressure in corresponding switching circuit
Oil keeps certain pressure, therefore when performer conversion is in working condition, make shift because there is oil more in the switching circuit
Steadily, there is no pause and transition in rhythm or melody sense, and the time of oil circuit switching shortens.
High-pressure oil passage is connected to the reversal valve 2 of each parallel connection.It is connected to when high-pressure oil passage works by the minor loop of switching circuit
Performer, that is, when certain performer is in running order, the minor loop of corresponding switching circuit connects through reversal valve 2
Logical high-pressure oil passage, meanwhile, another part of the switching circuit is via 2 pressure release of control valve 1 or/and reversal valve.In other words, it switches back into
Road and high-pressure oil passage share minor loop, which is high pressure oil in the operating condition, is in a non-operative state low pressure
Oil, therefore performer is converted when being in working condition, and is made to shift gears because there is oil in the shared minor loop more stable, not paused
Sense is frustrated, to improve clutch combination pressure ride comfort, reduces clutch joint impact, meanwhile, the time of oil circuit switching
Shorten.
Low pressure oil way includes the first low pressure oil way and the second low pressure oil way.First low pressure oil way is connected to the reversal valve of each parallel connection
2, the second low pressure oil way is connected to reversal valve 2 and control valve 1 simultaneously, certainly, reversal valve and control in same oil circuit switch unit
Valve is simultaneously connected to the second low pressure oil way, and accesses the second low pressure oil way after the parallel connection of each oil circuit switch unit.In other words, in the second low pressure
It on oil circuit, is not interfere with each other between different oil circuit switch units, in same oil circuit switch unit, reversal valve and control valve are mutually only
It is vertical.
When an oil circuit switch unit is in off working state, the first low pressure oil way makes its switching circuit through its reversal valve 2
Full of low pressure oil；Meanwhile first low pressure oil way control the reversal valve 2 and control valve 1 spool position, make the second low pressure oil way
It is disconnected with the oil circuit switch unit with high-pressure oil passage.
When an oil circuit switch unit is in running order, the first low pressure oil way and the oil circuit switch unit are disconnected, and second
Low pressure oil way connects its reversal valve 2 and its control valve 1, and makes the valve core movement of the reversal valve 2 and the control valve 1 to suitable position
Set, the suitable position be interpreted as " high-pressure oil passage is connected to corresponding performer with local switching circuit through the reversal valve 2, and
The position of first low pressure oil way and the reversal valve 2 disconnection ".
Please continue to refer to Fig. 1-3, specifically, the second low pressure oil way includes and the one-to-one ratio control of oil circuit switch unit
Valve 5 processed, the second low pressure oil way of series connection access between each proportional control valve 5.Second low pressure oil way is at each proportional control valve 5
Form a low pressure branch, the corresponding oil circuit switch unit of each low pressure branch, 2 He of reversal valve of same oil circuit switch unit
The access low pressure branch in parallel of control valve 1.Ratio adjusting valve controls the branch by adjusting the pressure of its corresponding low pressure branch
On-off.
Further, low pressure oil way further includes pressure reducing valve 4, and pressure reducing valve 4 connects high-pressure oil passage, and high pressure oil is converted to low
Pressure oil is exported to the first low pressure oil way and the second low pressure oil way.Decompression is accessed after first low pressure oil way and the second low pressure oil way are in parallel
Valve 4.
Please continue to refer to Fig. 1-3, specifically, the high-pressure oil passage includes main pressure regulator valve 3, each 2 parallel connection of reversal valve is followed by
Enter main pressure regulator valve 3, main pressure regulator valve 3 exports high pressure oil.In one embodiment, above-mentioned pressurizing valve connects main pressure regulator valve 3.When
So, pressure reducing valve 4 accesses other places of high-pressure oil passage also within the scope of protection of this application.
Main pressure regulator valve 3 does not directly control clutch combination pressure, therefore the application is to the control pressure and control essence of system
Degree requires to reduce.
Further, high-pressure oil passage further includes oil cooling machine 6, and oil cooling machine 6 connects main pressure regulator valve 3, to high-pressure oil passage
It is cold that hydraulic oil carries out oil.
Please continue to refer to Fig. 1-3, specifically, hydraulic control system further includes oil feeding line, the oil feeding line includes oil
Case 7, dynamical element and filter element.Wherein, hydraulic oil is placed in fuel tank 7；Filter element, which includes at least, carries out hydraulic oil
The coarse filtration element 801 of coarse filtration may also include the refined filtration element 802 that refined filtration is carried out to hydraulic oil, wherein one end of refined filtration element 802
Connect high-pressure oil passage；Dynamical element includes the motor 902 of motor 901 and drive motor 901, and motor 902 is used for drive motor 901
Rotation.Hydraulic oil is extracted out through coarse filtration by motor 901 from fuel tank 7, and the hydraulic oil that motor 901 exports is high pressure, high pressure it is hydraulic
Oil inputs high-pressure oil passage after the filtering of refined filtration element 802.In view of fuel tank 7, filter element, dynamical element are existing mature skill
Art, and its specific structure is not the scheme to be protected of the application, therefore its electrodeless structure is not described in detail herein.
Specifically, solenoid valve can be used in above-mentioned control valve 1, main pressure regulator valve 3, pressure reducing valve 4 and proportional control valve 5,
The spool of reversal valve 2 is controlled by high-pressure oil passage and low pressure oil way.
Above-mentioned to be stated from overall structure the application, the structure at this in conjunction with each valve is further to the application
Explanation.Fig. 2,3 are please referred to, main pressure regulator valve port 1, main pressure regulator valve port 2 302, main pressure regulator valve port 3 303, pressure relief valve port are defined
One 401, pressure relief valve port 2 402, pressure relief valve port 3 403, commutation valve port 1, commutation valve port 2 202, commutation valve port 3 203,
Commutate valve port 4 204, commutation valve port 5 205, control valve port 1, control valve port 2 102 and control valve port 3 103.For just
In understanding, the valve port of all reversal valves of the application and the valve port of control valve are all based on the oil circuit switch unit of clutch, such as Fig. 3
It is shown.In addition, Fig. 3 has always carried out the spool of reversal valve and control valve to play hatching processing, it is therefore an objective to facilitate and understands the application,
Have no other limitations.
The high pressure oil of oil feeding line output is inputted through main pressure regulator valve valve port one；Main pressure regulator valve port 2 302 and main pressure regulator valve port
Although there is high pressure intersection in 3 303 oil pipes drawn, but when main pressure regulator valve 3 works, main pressure regulator valve port 2 302 is by spool
It blocks, therefore high pressure oil is only exported by main pressure regulator valve port 3 303.In addition, oil circuit switch unit and pressure reducing valve are in the high pressure intersection
Connect main pressure regulator valve 3.
Pressure reducing valve connects main pressure regulator valve port through pressure relief valve port 3 403；Although pressure relief valve port 2 402 and pressure relief valve port 1
There are low pressure intersections, but when pressure reducing valve 4 works, pressure relief valve port 1 is blocked by spool, therefore low pressure oil is through pressure relief valve port
2 402 outputs.In addition, the first low pressure oil way, the second low pressure oil way are formed on the oil pipe of connection pressure relief valve port 2 402.Commutation
Valve port 1 connects high-pressure oil passage, and commutation valve port 2 202 connects the first low pressure oil way, commutation valve port 3 203 and control valve port one
101 the second low pressure oil ways of connection；Commutate the connection control valve port 2 102 of valve port 4 204, the commutation connection control valve port of valve port 5 205
3 103.Wherein, oil pipe is successively through commutation valve port 4 204, control valve port 2 102, control valve port 3 103 and commutation valve port five
205 form the switching circuit.
When under clutch is in running order, high pressure oil is connected to clutch with commutation valve port 4 204 through commutation valve port 1
Device；Commutation valve port 2 202 and commutation valve port 4 204 are separated by spool, commutation valve port 5 205 and control 3 103 pressure release of valve port.
When clutch is in off working state, commutation valve port 4 204 is disconnected with commutation valve port 1 by spool, and with
The valve port 2 202 that commutates is connected, at this point, the first low pressure oil way is connected to switching circuit.Commutate valve port 3 203 and control valve port 1
It is blocked by spool, to be disconnected with the second low pressure oil way.
The application is had been described in detail from structure above, below in conjunction with workflow, with a clutch, a braking
The application is further described based on device.In Fig. 1-3, C is enabled to indicate that clutch, B indicate that brake, Fig. 2 indicate at clutch
It is in the operating condition of off working state in working condition, brake, Fig. 3 indicates that clutch is in off working state, brake is in
The operating condition of working condition.In Fig. 2 and Fig. 3, dotted line indicates that high pressure oil, single dotted broken line indicate that low pressure oil, fine line indicate oil circuit not
Logical (for fuel tank 7 to except between 901 sections of motor, when motor 901 acts, which has hydraulic oil always), dotted line, single-point setting-out at this
And fine line has no other effects just for the sake of the oil circuit of differentiation different pressures.
When clutch is in running order:
Referring to Fig. 2, the high pressure oil that motor 901 exports divides three tunnels through main pressure regulator valve 3, the first via is connected to clutch, second
Road is cut off at the corresponding reversal valve 2 of brake by the spool of the reversal valve 2, and third road connects pressure reducing valve 4.Wherein, although
High pressure oil also connects control valve 1 all the way, but is cut off by the spool of the control valve 1.By pressure reducing valve 4, to be divided into two-way low on third road
Pressure oil, i.e. the first low pressure oil way and the second low pressure oil way.
First low pressure oil way is corresponded in clutch and is cut off at reversal valve 2 by spool, is connected at the corresponding reversal valve 2 of brake
Lead to the switching circuit of the oil circuit switch unit, certainly, the first low pressure oil way is also connected to brake.In second low pressure oil way, than
Under the adjusting of example control valve 5, the corresponding reversal valve 2 of clutch connects the second low pressure oil way with control valve 1, and brake is corresponding to be changed
It is disconnected to valve 2 and control valve 1 with the second low pressure oil way.
When brake is in running order:
Referring to Fig. 3, the high pressure oil that motor 901 exports divides three tunnels through main pressure regulator valve 3, the first via is connected to brake, second
Road is cut off at the corresponding reversal valve 2 of clutch by the spool of the reversal valve 2, and third road connects pressure reducing valve 4.Wherein, although
High pressure oil also connects control valve 1 all the way, but is cut off by the spool of the control valve 1.By pressure reducing valve 4, to be divided into two-way low on third road
Pressure oil, i.e. the first low pressure oil way and the second low pressure oil way.
First low pressure oil way is corresponded in brake and is cut off at reversal valve 2 by its spool, at the corresponding reversal valve 2 of clutch
It is connected to the switching circuit of the oil circuit switch unit, certainly, the first low pressure oil way is also connected to clutch.In second low pressure oil way,
Under the adjusting of proportional control valve 5, the corresponding reversal valve 2 of brake connects the second low pressure oil way with control valve 1, and clutch is corresponding
Reversal valve 2 and control valve 1 are disconnected with the second low pressure oil way.
The handover operation of Clutch and brake:
By taking clutch switches to brake as an example.1) the corresponding proportional control valve 5 of clutch, the pressure of the low pressure branch are closed
Power reduces, and the spool of the corresponding reversal valve 2 of clutch and control valve 1 moves shape as shown in Figure 2 because of stress disequilibrium
State, to make the first low pressure oil way connection clutch and the corresponding switching circuit of clutch.2) the corresponding ratio of brake is opened
Example control valve 5, low pressure oil enters the corresponding reversal valve 2 of brake and control valve 1 through the second oil circuit, and transports the spool of two valve
It is dynamic, to make high pressure oil enter brake, the first low pressure oil way is cut off at the reversal valve 2, connection reversal valve 2 on switching circuit
With an oil pipe pressure release of control valve 1.Realized by above-mentioned two operation and switch to the process of brake from clutch, i.e., by
Fig. 2 is transformed into the process of Fig. 3.
On the contrary then switch to clutch by brake, principle is same as above, therefore herein without repeating.
Present invention also provides a kind of commercial vehicle, which has above-mentioned automatic transmission is hydraulic to go into operation to system.
Disclosed above is only some embodiments of the application, and however, this application is not limited to this, any this field
Technical staff can think variation, should all fall in the protection domain of the application.
Claims (8)
1. a kind of hydraulic control system of automatic speed changer of commercial vehicle, which is characterized in that including performer, high-pressure oil passage, low
Pressure oil road and at least two oil circuit switch units；
The oil circuit switch unit includes reversal valve, control valve and switching circuit；It is changed described in same oil circuit switch unit
It connects to form the switching circuit to valve and the control valve；Oil circuit switch unit passes through the switching circuit and the actuator
Part corresponds connection；
The high-pressure oil passage is connected to the reversal valve of each parallel connection；
The low pressure oil way includes the first low pressure oil way and the second low pressure oil way, and first low pressure oil way connects changing for each parallel connection
To valve, second low pressure oil way is accessed after the reversal valve and control valve parallel connection in same oil circuit switch unit.
2. hydraulic control system as described in claim 1, which is characterized in that second low pressure oil way includes switching with oil circuit
The one-to-one proportional control valve of unit is connected in series between each proportional control valve.
3. hydraulic control system as claimed in claim 2, which is characterized in that low pressure oil way further includes pressure reducing valve, and described first
The pressure reducing valve is accessed after low pressure oil way and the second low pressure oil way are in parallel, the pressure reducing valve connects high-pressure oil passage.
4. hydraulic control system as described in claim 1, which is characterized in that the high-pressure oil passage includes the master for exporting high pressure oil
Pressure regulator valve accesses the main pressure regulator valve after each reversal valve is in parallel.
5. hydraulic control system as claimed in claim 4, which is characterized in that high-pressure oil passage further includes oil cooling machine, and the oil is cold
Machine connects the main pressure regulator valve.
6. hydraulic control system as described in claim 1, which is characterized in that it further include oil feeding line, the oil feeding line packet
Fuel tank, dynamical element and filter element are included, the hydraulic oil in the fuel tank is successively through the filter element and power member
Part accesses high-pressure oil passage.
7. hydraulic control system as described in claim 1, which is characterized in that the performer includes at least one clutch
With at least one brake, the clutch, the brake and switching circuit connect one to one.
8. a kind of commercial vehicle, which is characterized in that using such as the described in any item hydraulic control systems of claim 1-7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433274.XU CN208951283U (en) | 2018-09-03 | 2018-09-03 | A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821433274.XU CN208951283U (en) | 2018-09-03 | 2018-09-03 | A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN208951283U true CN208951283U (en) | 2019-06-07 |
Family
ID=66736693
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821433274.XU Active CN208951283U (en) | 2018-09-03 | 2018-09-03 | A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle |
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| Country | Link |
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| CN (1) | CN208951283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058449A (en) * | 2018-09-03 | 2018-12-21 | 苏州凯博易控驱动技术有限公司 | A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle |
-
2018
- 2018-09-03 CN CN201821433274.XU patent/CN208951283U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058449A (en) * | 2018-09-03 | 2018-12-21 | 苏州凯博易控驱动技术有限公司 | A kind of hydraulic control system of automatic speed changer and commercial vehicle of commercial vehicle |
| CN109058449B (en) * | 2018-09-03 | 2023-11-17 | 凯博易控驱动(苏州)股份有限公司 | Automatic transmission hydraulic control system of commercial vehicle and commercial vehicle |
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| CP03 | Change of name, title or address |
Address after: No. 999, Yingbin West Road, Luzhi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Capotech (Suzhou) Co., Ltd Address before: 215127 South of Yingbin West Road, Yongzhi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: Kaibo Controllable Drive (Suzhou) Co., Ltd. |
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