CN207093614U - A kind of efficient oil supply system of automatic transmission - Google Patents
A kind of efficient oil supply system of automatic transmission Download PDFInfo
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- CN207093614U CN207093614U CN201721064354.8U CN201721064354U CN207093614U CN 207093614 U CN207093614 U CN 207093614U CN 201721064354 U CN201721064354 U CN 201721064354U CN 207093614 U CN207093614 U CN 207093614U
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- oil
- pipeline
- pressure
- electrodynamic pump
- control
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Abstract
The utility model provides a kind of efficient oil supply system of automatic transmission, employs new oil supply system, high-pressure oil passage and low pressure oil way split-type design, and high-pressure oil passage is clutch control oil and gearshift control oil circuit fuel feeding by electrodynamic pump and accumulator；Between the electronic pump discharge of high-pressure oil passage and the connection oil duct of accumulator import, pressure monitoring device in parallel, filled for electrodynamic pump starting and accumulator, the control on opportunity of draining the oil；High-pressure oil passage electrodynamic pump exit sets refined filtration filter screen, for ensureing the cleannes of control oil；Low pressure oil way oil sources is mainly made up of a big flow electrodynamic pump and a mechanical oil pump feed, for the lubrication of clutch and axle tooth, cooling；The system realizes the accurate control of control system flow, reduces the waste of fluid, improves the operating efficiency of system, solves the problems, such as that the electrical machinery life of electrodynamic pump is short, flimsy technical bottleneck, reduces operation and maintenance cost.
Description
Technical field
It the utility model is related to the automatic transmission field of motor vehicle driven by mixed power, the more particularly to passenger car of oil electricity mixing certainly
A kind of dynamic speed changer field, mainly for the technology in terms of hydraulic control, system design and mechanical-electric coupling, and in particular to automatic change
The fast efficient oil supply system of device
Background technology
With the aggravation of environmental pollution and the lifting of national auto fuel economy standard, it is badly in need of a kind of Automobile drive of energy-conserving and environment-protective
Solution.Technology of Hybrid Electric Vehicle has that oil-saving effect is good, technology as the driving of pure fuel oil and the transition scheme of pure electronic scheme
The advantages of scheme relative maturity, strong technology autgmentability.
In the automatic transmission of motor vehicle driven by mixed power, the control system of core is by the way of mechanical, electrical, liquid coupling.It
Develop into and can be divided into two stages at present, the main distinction is oil supply system and hydraulic control portion.To oil supply system, first
The mode of one mechanical oil pump of stage generally use and an electric oil pump joint fuel feeding.Electric oil pump is the auxiliary of mechanical oil pump
Oil sources, mainly provide fluid in the operating mode of electric activation for hydraulic system.To ensure the lubrication traffic demand of the slow-speed of revolution, machine
The discharge capacity of tool pump is generally larger, relatively low in the utilization rate for the operating mode oil that middle high rotating speed or two pumps work simultaneously, fluid it is serious
Waste causes the efficiency of hydraulic system low.Second generation oil supply system uses two electrodynamic pumps, or in parallel when needed one smaller
The mechanical pump of discharge capacity, the accurate control to system fuel delivery can be achieved, avoid the wave under high speed conditions in first generation system
Take, flow control more lean, substantially increase system effectiveness.
《Energy efficient actuation units for dual-clutch transmissions》(author
Dipl.-Ing.Erik Schneider, Dr.Mirko Leesch, from IAV companies.7th TM Symposium are selected from herein
China, A) in the systematic comparison typical case that is shown, the scheme of oil sources part embodied using quantitative mechanical pump+auxiliary electric pump
Or the first generation oil sources scheme of mechanical pump is only used, combine turn of the second generation oil sources scheme of fuel feeding with accumulator to two electrodynamic pumps
Become.Two electrodynamic pump arranged in series, being driven using same motor, the electronic pumpage of the first order is more than second level electrodynamic pump, to
Second level electrodynamic pump and cooling and lubricating oil circuit fuel feeding.Second level electrodynamic pump provides quantitative oil to control oil circuit.Due to electrodynamic pump
Motor rotating speed can be separately adjustable, the relative efficiency for improving system.But because two oil pumps share a motor,
The output flow of two pumps can not be distributed by system requirements.For system safely, prevent axle tooth and clutch ablation, need to provide larger
Cooling and lubricating flow, cause the flow of now input control system to exceed usage amount, unnecessary oil directly flows back to fuel tank, causes
The waste of oil and the reduction of efficiency.In addition, though the system is provided with energy storage device (accumulator etc.), electrodynamic pump stills need frequently
Start and work long hours, significantly reduce the service life of motor, motor need to be regularly replaced, improve maintenance and
Use cost.
The content of the invention
The utility model be realize few precise control of flew of control system, reduce oil waste, greatly improve efficiency,
Reduce oil consumption, there is provided a kind of efficient oil supply system of automatic transmission, the utility model adopt the following technical scheme that realization：
A kind of efficient oil supply system of automatic transmission, it is characterised in that including oil sources, clutch pressure control, gear shift pressure
Power and flow control and clutch/axle tooth lubrication control, oil sources include high-pressure oil passage oil sources and low pressure oil way oil sources；
Described high-pressure oil passage oil sources include small fuel tank, large tank, coarse filter, the first check valve, with motor
First electrodynamic pump, the second check valve, refined filtration filter screen, pressure sensor, accumulator and high-pressure oil passage unloading valve, the oil-feed of coarse filter
Mouth is immersed in the fluid of large tank, and the oil-out of coarse filter is connected with the oil inlet of the first check valve by pipeline, and first is single
It is connected to the oil-out of valve with the oil inlet of the first electrodynamic pump by pipeline, the oil-out of the first check valve and the first electrodynamic pump
Pipeline between oil inlet is connected with small fuel tank, and the oil inlet of the oil-out of the first electrodynamic pump and the second check valve is connected by pipeline
Connect, the oil-out of the second check valve is connected with the oil inlet of refined filtration filter screen by pipeline, the oil-out and accumulator of refined filtration filter screen
Oil inlet connected by pipeline, the outlet of accumulator and small fuel tank have three branches by pipeline connection, the outlet of accumulator
Oil duct, wherein branch's oil duct and small fuel tank be by pipeline connection, pacify in the pipeline that the outlet of accumulator is connected with small fuel tank
Equipped with high-pressure oil passage unloading valve, the two other branch oil duct oil-feed with shift gears pressure and flow control respectively of accumulator outlet
Mouth is connected with the oil inlet of clutch pressure control by pipeline, between the oil-out of refined filtration filter screen and the oil inlet of accumulator
One pressure sensor is installed on pipeline；
The low pressure oil way oil sources includes the second electrodynamic pump, mechanical pump and low pressure oil way unloading valve with motor,
The oil inlet of second electrodynamic pump and the oil inlet of mechanical pump access coarse filter oil-out and first again after being communicated with each other by pipeline
On pipeline between check valve oil inlet, after the oil-out of the second electrodynamic pump and the oil-out of mechanical pump are communicated with each other by pipeline
It is divided into two branch road oil ducts, wherein a branch road oil duct and the oil inlet of clutch/axle tooth lubrication control are connected by pipeline
Connect, another branch road oil duct is connected with the oil inlet of low pressure oil way unloading valve by pipeline, the oil-out of low pressure oil way unloading valve
Pass through pipeline connection with large tank；
First electrodynamic pump, the second electrodynamic pump and pressure sensor are connected by the control unit of data wire and transmission for vehicles
Connect.
Further technical scheme includes：
Control element in the oil return opening and clutch pressure control of pressure of shifting gears and the control element in flow control
Oil return opening connects with small fuel tank, and the fluid that above-mentioned two oil return opening flows back to is back to the oil-feed of the first electrodynamic pump by small fuel tank
At mouthful, the oil after refined filtration strainer filtering is reused, prevents it from flowing back to large tank and causing to clean the waste of fluid.
Second check valve uses the non-return valve without spring, and ball valve cooperation position uses circular conical surface, for preventing accumulation of energy
The oil stream of device outlet causes reverse impact to the first electrodynamic pump.
Described mechanical pump is coupled with automobile engine by spline or shaft coupling.
The utility model employs the oil supply system, high pressure and low pressure oil way split-type design of a new generation.High-pressure oil passage bag
Electrodynamic pump, accumulator, clutch control oil and gearshift control oil circuit etc. are included, is clutch control oil by electrodynamic pump and accumulator
Road and gearshift control oil circuit fuel feeding.Electrodynamic pump itself motor rotation speed change exports different flow, according to clutch and can change
Keep off the output flow of the demand regulation electrodynamic pump of executing agency.Accumulator is as auxiliary oil sources fuel feeding.Above scheme realizes control
The accurate control of flow system flow processed.Reduce the waste of fluid.Compared to first generation system schema, this programme at least improves system
Efficiency 50%.
Between the electronic pump discharge of high-pressure oil passage and the connection oil duct of accumulator import, pressure monitoring device (such as pressure in parallel
Sensor), filled for electrodynamic pump starting and accumulator, the control on opportunity of draining the oil.When system pressure is less than the minimum oil pressure set
When, the motor of electrodynamic pump starts, to system fuel feeding, oil-filled to accumulator.When system pressure, which reaches, sets MTP,
The motor of electrodynamic pump is stopped, and system is by accumulator fuel feeding.By the reasonable setting of highest and minimum oil pressure, can be achieved
Electrodynamic pump discontinuous operation, effectively reduce electrodynamic pump motor start-stop time and the working time, realize the vehicle life-cycle without
The motor of electrodynamic pump need to be changed, solves the problems, such as the motor short life of electrodynamic pump, flimsy technical bottleneck, is reduced
Operation and maintenance cost.
High-pressure oil passage electrodynamic pump exit sets refined filtration filter screen, for ensureing the cleannes of control oil.Usual fine filter member
By-passing valve is parallel with part, pressure difference is larger when fine filter reaches service life, and by-passing valve is opened.The utility model is filtered with refined filtration
Net instead of the conventional fine filter with by-passing valve, electrodynamic pump driving electricity when the utility model reaches the life-span using refined filtration filter screen
The characteristics of stream increase, by monitoring the feedback driving current of high-pressure oil passage electrodynamic pump, monitor whether refined filtration filter screen reaches the longevity in real time
Life, improve the functional reliability of system.Because instead of conventional fine filter using refined filtration filter screen, comparing and taking with conventional fine filter
Disappeared the by-passing valve of conventional fine filter, simplifies hydraulic system.
High pressure fuel source is designed using closed circuit.Control element (such as electromagnetism in clutch control or gearshift control oil circuit
Valve) oil of oil return opening outflow by enclosed oil duct returns to small fuel tank.Small fuel tank directly with electrodynamic pump inlet port UNICOM.Due to system
Large tank and electrodynamic pump between have coarse filter and check valve, certain pressure resistance be present, so the oil of small fuel tank preferentially enters electricity
Dynamic pump.This part luboil cleanness is higher, can extend the service life of fine filter, realizes that the fine filter life-cycle uses, reduces dimension
Protect cost.
Low pressure oil way oil sources is mainly made up of a big flow electrodynamic pump and a mechanical oil pump feed, for clutch and axle
The lubrication of tooth, cooling.The operating mode independent oil supply that the motor of electrodynamic pump is operated alone, flow supplies other operating modes according to demand
Oil.Mechanical pump can be smaller than the pumpage of first generation system by engine driving.In hybrid power driving or engine driving work
Condition, mechanical oil pump feed meet electronic air pump inoperative during lubrication demand.In big flow demand, two pumps can be system jointly
Fuel feeding, greatly enhance the controllability of lubricating and cooling system.The use of mechanical pump significantly reduces the live load of electrodynamic pump, prolongs
The service life of the motor of electrodynamic pump is grown.
Brief description of the drawings
The utility model is further described below in conjunction with the accompanying drawings：
Fig. 1 is a kind of structural representation of the efficient oil supply system of automatic transmission described in the utility model；
In figure：1. small fuel tank, 2. large tanks, 3. coarse filters, 4. first check valves, 5. first electrodynamic pumps, 6. second is electronic
Pump, 7. mechanical pumps, 8. low pressure oil way unloading valves, 9. clutches/axle tooth lubrication control, 10. second check valves, 11. refined filtrations
Device, 12. pressure sensors, 13. gearshift pressure and flow control, 14. accumulators, 15. high-pressure oil passage unloading valves, 16. clutches
Stress control.
Embodiment
The utility model is explained in detail below in conjunction with the accompanying drawings：
As shown in Figure of description, whole hydraulic system is divided into four major parts, is oil sources, clutch pressure control respectively
16th, pressure of shifting gears and flow control 13 and clutch/axle tooth lubrication 9.Oil sources includes high-pressure oil passage oil sources and low pressure oil way
Oil sources.High-pressure oil passage oil sources includes small fuel tank 1, large tank 2, coarse filter 3, the first check valve 4, the first electricity with motor
Dynamic pump 5, the second check valve 10, refined filtration filter screen 11, pressure sensor 12, accumulator 14 and high-pressure oil passage unloading valve 15.Low pressure oil
Road binders source is made up of the second electrodynamic pump 6, mechanical pump 7, low pressure oil way unloading valve 8.
In high-pressure oil passage oil sources, the oil inlet of coarse filter 3 is immersed in the fluid of large tank 2, the oil-out of coarse filter 3 with
The import of first check valve 4 is connected by pipeline, the pipe between the outlet of the first check valve 4 and the oil inlet of the first electrodynamic pump 5
Lu Yu little fuel tanks 1 connect.The oil inlet of output hydraulic oil, the oil-out of the first electrodynamic pump 5 and the second check valve 10 passes through pipeline
Connection, the oil-out of the second check valve 10 are connected with the oil inlet of refined filtration filter screen 11 by pipeline, the oil-out of refined filtration filter screen 11
Oil inlet with accumulator 14 is by pipeline connection, and there are three branch's oil ducts the outlet of accumulator 14, wherein branch's oil duct
With small fuel tank 1 by pipeline connection, high-pressure oil passage unloading valve 15 is installed in the pipeline, high-pressure oil passage unloading valve is reaching certain
Just opened during oil pressure.The two other branch oil circuit of accumulator 14 respectively with gearshift pressure and flow control 13 oil inlet and from
The oil inlet of clutch Stress control 16 is connected by pipeline.Between the oil-out of refined filtration filter screen 11 and the oil inlet of accumulator 14
One pressure sensor 12 is installed on pipeline.First electrodynamic pump 5 and pressure sensor 12 pass through data wire and transmission for vehicles
Control unit (TCU) connection.The major control process of high-pressure oil passage is as follows：
First electrodynamic pump 5 rotates under the driving of itself motor and exports hydraulic oil, export the pressure of hydraulic oil by
Pressure sensor 12 monitors.When system oil pressure is less than setting low pressure limit, the first electrodynamic pump 5 receives the control list of speed changer
The order of first (TCU), the motor rotation of the first electrodynamic pump 5, drives the first electrodynamic pump 5 to be pressed to accumulator 14 and/or gearshift
Power and flow control 13, the fuel feeding of clutch pressure control 16；When system oil pressure reaches upper pressure limit, accumulator 14 has been filled with oil
Liquid, the first electrodynamic pump 5 are stopped, and are supplied from accumulator 14 to gearshift pressure and flow control 13 and clutch pressure control 16
Oil.
High-pressure system is designed using closed cycle oil circuit, and pressure of shifting gears and flow control 13, clutch pressure control 16
The oil of (T mouths) oil return of control element (such as magnetic valve) oil return opening and leakage flow back into small fuel tank 1 by oil duct, small fuel tank 1 and the
The inlet port of one electrodynamic pump 5 passes through pipeline connection.Due to there is the check valve of coarse filter 3 and first between the electrodynamic pump 5 of large tank 2 and first
4, certain pressure drag be present, therefore the oil of small fuel tank 1 preferentially enters the first electrodynamic pump 5, this part luboil cleanness is higher, can
Directly utilized by system, alleviate the burden of refined filtration filter screen 11, extend the service life of refined filtration filter screen 11.When refined filtration filter screen 11
When reaching service life, its pressure loss increases becomes big so as to load, and the electric current of the first electrodynamic pump 5 of driving becomes big, available
This feature monitors the working condition of refined filtration filter screen 11 in real time, is changed in time after reaching the life-span, is easy to cleanliness control.First electricity
Dynamic the first check valve 4 between pump 5 and coarse filter 3 can prevent the oil in small fuel tank 1 from reversely flowing to large tank 2.First electrodynamic pump 5
The second check valve 10 between refined filtration filter screen 11 ensure accumulator outlet fluid can only flow to gearshift pressure and flow control 13 and
Clutch pressure control 16, prevent this part the first electrodynamic pump of oil reverse impact 5.
Low pressure oil way oil sources includes the second electrodynamic pump 6, mechanical pump 7 and low pressure oil way unloading valve 8 with motor.The
The oil inlet of two electrodynamic pumps 6 and the oil inlet of mechanical pump 7 access the oil-out of coarse filter 3 and first again after being communicated with each other by pipeline
On pipeline between the oil inlet of check valve 4, the oil-out of the second electrodynamic pump 6 is connected each other with the oil-out of mechanical pump 7 by pipeline
It is divided into two branch road oil ducts after logical, wherein a branch road oil duct and the oil inlet of clutch/axle tooth lubrication control 9 pass through pipe
Road is connected, and another branch road oil duct is connected with the oil inlet of low pressure oil way unloading valve 8 by pipeline, low pressure oil way unloading valve 8
Oil-out passes through pipeline connection with large tank 2.Second electrodynamic pump 6 passes through the control unit of data wire and transmission for vehicles (TCU)
Connection
The flow of second electrodynamic pump 6 can individually be adjusted by the motor of its own.Mechanical pump 7 and engine output shaft
Connected by spline, shaft coupling or similar means, by engine driving.The electrodynamic pump 6 of mechanical pump 7 and second can to clutch/
Axle tooth lubrication controls the fuel feeding of oil circuit 9.During pure electronic operating mode, mechanical pump 7 does not turn, by 6 independent fuel feeding of electrodynamic pump.Engine work
The operating mode of work, mechanical pump 7 is with turning fuel feeding, and the second electrodynamic pump 6 does not work or fuel feeding according to demand.The driving of usual electrodynamic pump itself
The life-span of motor is shorter, and the working strategies can reduce the load of the second electrodynamic pump 6 motor of itself, and it is electronic to improve second
The life-span of the motor of itself of pump 6.The off-load when oil circuit pressure exceeds design pressure of low pressure oil way unloading valve 8, protect low pressure
Oil circuit.
Claims (4)
1. a kind of efficient oil supply system of automatic transmission, it is characterised in that including oil sources, clutch pressure control (16), gear shift
Pressure and flow control (13) and clutch/axle tooth lubrication control (9), oil sources include high-pressure oil passage oil sources and low pressure oil
Road binders source；
Described high-pressure oil passage oil sources include small fuel tank (1), large tank (2), coarse filter (3), the first check valve (4), with drive
The first electrodynamic pump (5) of dynamic motor, the second check valve (10), refined filtration filter screen (11), pressure sensor (12), accumulator (14) and
High-pressure oil passage unloading valve (15), the oil inlet of coarse filter (3) are immersed in the fluid of large tank (2), the oil-out of coarse filter (3)
It is connected with the oil inlet of the first check valve (4) by pipeline, the oil-out of the first check valve (4) and entering for the first electrodynamic pump (5)
Hydraulic fluid port is connected by pipeline, the pipeline between the oil-out of the first check valve (4) and the oil inlet of the first electrodynamic pump (5) and small oil
Case (1) is connected, and the oil-out of the first electrodynamic pump (5) is connected with the oil inlet of the second check valve (10) by pipeline, and second is unidirectional
The oil-out of valve (10) is connected with the oil inlet of refined filtration filter screen (11) by pipeline, the oil-out and accumulator of refined filtration filter screen (11)
(14) oil inlet is connected by pipeline, the outlet of accumulator (14) and small fuel tank (1) by pipeline connection, accumulator (14)
There are three branch's oil ducts outlet, wherein branch's oil duct and small fuel tank (1) be by pipeline connection, the outlet of accumulator (14) with
High-pressure oil passage unloading valve (15), the two other branch oil of accumulator (14) outlet are installed in the pipeline of small fuel tank (1) connection
Oil inlet of the road respectively with the oil inlet and clutch pressure control (16) of gearshift pressure and flow control (13) is connected by pipeline
Connect, a pressure sensor is installed on the pipeline between the oil-out of refined filtration filter screen (11) and the oil inlet of accumulator (14)
(12)；
The low pressure oil way oil sources includes the second electrodynamic pump (6), mechanical pump (7) and low pressure oil way unloading valve with motor
(8), the oil inlet of the oil inlet of the second electrodynamic pump (6) and mechanical pump (7) accesses coarse filter (3) again after being communicated with each other by pipeline
On pipeline between oil-out and the first check valve (4) oil inlet, the oil-out of the second electrodynamic pump (6) and going out for mechanical pump (7)
Hydraulic fluid port is divided into two branch road oil ducts after being communicated with each other by pipeline, wherein a branch road oil duct and clutch/axle tooth lubrication
The oil inlet of control (9) is connected by pipeline, and the oil inlet of another branch road oil duct and low pressure oil way unloading valve (8) passes through pipeline
Connection, oil-out and the large tank (2) of low pressure oil way unloading valve (8) pass through pipeline connection；
First electrodynamic pump (5), the second electrodynamic pump (6) and pressure sensor (12) pass through data wire and the control list of transmission for vehicles
Member connection.
2. the efficient oil supply system of a kind of automatic transmission according to claim 1, it is characterised in that gearshift pressure and flow
Control the oil return opening of the control element in oil return opening and the clutch pressure control (16) of the control element in (13) with small oil
Case (1) is connected, and the fluid that above-mentioned two oil return opening flows back to is back at the oil inlet of the first electrodynamic pump (5) by small fuel tank (1),
The oil after refined filtration filter screen (11) filtering is reused, prevents it from flowing back to large tank (2) and causing to clean the waste of fluid.
A kind of 3. efficient oil supply system of automatic transmission according to claim 1, it is characterised in that the second check valve (10)
Using the non-return valve without spring, ball valve cooperation position uses circular conical surface, for prevent accumulator (14) export oil stream to
First electrodynamic pump (5) causes reverse impact.
A kind of 4. efficient oil supply system of automatic transmission according to claim 1, it is characterised in that described mechanical pump
(7) coupled with automobile engine by spline or shaft coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721064354.8U CN207093614U (en) | 2017-08-24 | 2017-08-24 | A kind of efficient oil supply system of automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721064354.8U CN207093614U (en) | 2017-08-24 | 2017-08-24 | A kind of efficient oil supply system of automatic transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093614U true CN207093614U (en) | 2018-03-13 |
Family
ID=61539281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721064354.8U Withdrawn - After Issue CN207093614U (en) | 2017-08-24 | 2017-08-24 | A kind of efficient oil supply system of automatic transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093614U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387598A (en) * | 2017-08-24 | 2017-11-24 | 中国第汽车股份有限公司 | A kind of efficient oil supply system of automatic transmission |
| CN112984090A (en) * | 2021-02-26 | 2021-06-18 | 中国第一汽车股份有限公司 | Control method of duplex pump for transmission |
-
2017
- 2017-08-24 CN CN201721064354.8U patent/CN207093614U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387598A (en) * | 2017-08-24 | 2017-11-24 | 中国第汽车股份有限公司 | A kind of efficient oil supply system of automatic transmission |
| CN112984090A (en) * | 2021-02-26 | 2021-06-18 | 中国第一汽车股份有限公司 | Control method of duplex pump for transmission |
| CN112984090B (en) * | 2021-02-26 | 2023-01-06 | 中国第一汽车股份有限公司 | Control method of duplex pump for transmission |
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Granted publication date: 20180313 Effective date of abandoning: 20230620 |
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| AV01 | Patent right actively abandoned |
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| AV01 | Patent right actively abandoned |