CN103291877B - A kind of hydraulic oil supply system for automatic transmission - Google Patents
A kind of hydraulic oil supply system for automatic transmission Download PDFInfo
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- CN103291877B CN103291877B CN201310265154.9A CN201310265154A CN103291877B CN 103291877 B CN103291877 B CN 103291877B CN 201310265154 A CN201310265154 A CN 201310265154A CN 103291877 B CN103291877 B CN 103291877B
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Abstract
The invention discloses a kind of hydraulic oil supply system for automatic transmission, belong to automatic transmission technical field, the hydraulic system for being used for automatic transmission has more preferable efficiency on speed changer Demand Base is met, reduce the oil consumption of vehicle, a kind of hydraulic oil supply system for automatic transmission of the present invention, including main pump and control oil pump；It is respectively hydraulic torque converter and shifting control system fuel feeding using two constant displacement pumps, so as to reduce the power consumption of hydraulic system.The flow of main pump is more than control oil pump, and a part of hydraulic oil of A oil circuits enters control oil pump, and another part returns to the inlet port of main pump by pressure-regulating valve；Control oil pump by hydraulic oil after A oil circuit oil suctions by supplying shifting control system.The hydraulic system that this hydraulic oil supply system works than single pump under the same conditions has relatively low power attenuation.
Description
Technical field
The invention belongs to automatic transmission technical field, it is related to the hydraulic oil supply system of hydraulic mechanical type automatic transmission,
It is related to the hydraulic torque converter fuel feeding, shifting control system fuel feeding, gearbox lubrication fuel feeding of hydraulic mechanical type automatic gear-box simultaneously
Transmission fluid force feed is cooled down.
Background technology
The hydraulic system of hydraulic mechanical type automatic transmission is the core of automatic transmission, mainly including oil pump, torque converter
Oil supply subsystem, gearshift control and torque converter lock-in control subsystem, cooling and lubricating subsystem.Oil pump is driven by vehicle motor
It is dynamic, hydraulic oil is provided for system, hydraulic oil carries out charge oil pressure regulation and assignment of traffic by oil supply system, realized to hydraulic oil
Carry out being cooled to shift gears control and torque converter lock-in control subsystem and lubrication subsystem fuel feeding.
At present, used hydraulic machine is that automatic speed variator hydraulic system can be realized accordingly on domestic and international vehicle
Function, but the improvement to system is still innovated constantly.
Hydraulic mechanical type automatic transmission mainly includes hydraulic torque converter, planet speed change mechanism and hydraulic system composition.Its
In, hydraulic torque converter needs big flow low-pressure fuel feeding, and hydraulic gear-shifting control valve then needs high pressure low discharge fuel feeding.At present
Most hydraulic mechanical type automatic transmission is used for hydraulic system using single constant displacement pump.Due to constant current pump discharge capacity and rotating speed into than
Example, is designed, therefore more hydraulic powers are produced under the maximum speed of this pump when designing pump in the case of the slow-speed of revolution.
The content of the invention
Present invention solves the technical problem that a kind of hydraulic oil supply system for automatic transmission is there is provided, using two
Constant displacement pump is respectively hydraulic torque converter and hydraulic gear-shifting control valve (shift valve, shifting control system) fuel feeding, so as to reduce liquid
The power consumption of pressure system.The hydraulic system for automatic transmission of the present invention has more preferably on speed changer Demand Base is met
Efficiency, reduce the oil consumption of vehicle.
The technical scheme is that：A kind of hydraulic oil supply system for automatic transmission, including main pump and control oil
Pump；Hydraulic oil is supplied hydraulic torque converter and hydraulic torque converter inlet pressure regulating valve by described main pump from fuel tank oil suction, main pump,
Hydraulic oil arrives hydraulic torque converter outlet pressure regulating valve after hydraulic torque converter；When the pressure in hydraulic torque converter reaches set
When counting pressure, hydraulic torque converter outlet pressure regulating valve is opened, and hydraulic oil flows to by hydraulic torque converter outlet pressure regulating valve
Radiator；When hydraulic torque converter inlet pressure reaches design pressure, hydraulic torque converter inlet pressure regulating valve is opened, hydraulic oil
Radiator is flowed to by hydraulic torque converter inlet pressure regulating valve；Hydraulic oil is by entering A oil circuits after radiator；Into A oil circuits
Oil two-way, part oil drawn through control oil pump from A oil circuits, and another way oil stream is adjusted when reaching pressure to pressure-regulating valve
Valve setting pressure is saved, hydraulic oil returns to the inlet port of main pump by pressure-regulating valve.
Preferably, pressure is filtered supply shifting control system and control oil by control oil pump after A oil circuit oil suctions by essential oil
Pressure pressure regulating valve；When controlling oil pressure pressure-regulating valve oil pressure to reach pressure-regulating valve design load, hydraulic oil is by control oil
Pressure pressure regulating valve enters lubricant passage way and lubrication pressure pressure-regulating valve, is adjusted when lubricant passage way oil pressure reaches lubrication pressure pressure
When saving valve setting value, hydraulic oil enters A oil circuits by lubrication pressure pressure-regulating valve.
Preferably, described main pump is filtered from fuel tank oil suction by oil suction.
Preferably, when solenoid directional control valve does not work, hydraulic torque converter inlet pressure regulating valve only has feedback cavity I to work, liquid
The pressure of power torque converter inlet pressure regulating valve is high；Solenoid directional control valve work when, hydraulic torque converter inlet pressure regulating valve it is anti-
Feedback chamber I and feedback cavity II work simultaneously, and the pressure of hydraulic torque converter inlet pressure regulating valve reduces.
The effect of the present invention：The hydraulic system that this hydraulic oil supply system works than single pump under the same conditions has relatively low
Power attenuation.Meanwhile the system working stability, reliability are higher.
Brief description of the drawings
Fig. 1 is the hydraulic system structure sketch of the present invention；
In figure：1. oil suction is filtered；2. main pump；3. hydraulic torque converter；4. hydraulic torque converter inlet pressure regulating valve；5. electromagnetism changes
To valve；6. hydraulic torque converter outlet pressure regulating valve (hydraulic torque converter outlet constant pressure valve)；7. radiator；8. pressure-regulating valve；
9. control oil pump；10. essential oil is filtered；11. control oil pressure pressure-regulating valve (equivalent to control oil pressure constant pressure valve)；12. lubrication pressure
Pressure-regulating valve (equivalent to lubrication pressure constant pressure valve)；
Embodiment
Include oil pump, hydraulic torque converter oil supply subsystem for automatic transmission hydraulic oil supply system, cooling subsystem, change
Gear control and hydraulic torque converter lockup clutch oil supply subsystem and lubrication subsystem.It is respectively hydraulic torque converting using two oil pumps
Device 3 and shift valve fuel feeding, and use half-closed loop.
A kind of hydraulic oil supply system for automatic transmission of the present invention, including main pump 2 and control oil pump 9；Described
Main pump 2 is by oil suction filter 1 from fuel tank oil suction, and hydraulic oil is supplied main pump 2 into hydraulic torque converter 3 and hydraulic torque converter inlet pressure is adjusted
Valve 4 is saved, hydraulic oil arrives hydraulic torque converter outlet pressure regulating valve 6, the pressure in hydraulic torque converter 3 after hydraulic torque converter 3
When power reaches designed pressure, hydraulic torque converter outlet pressure regulating valve 6 is opened, and hydraulic oil passes through hydraulic torque converter outlet pressure
Regulating valve 6 flows to radiator 7.
With the increase of the input speed of main pump 2, the increase of the output flow of main pump 2, therefore the inlet pressure of hydraulic torque converter 3 increases
Subtract, when reaching design load, hydraulic torque converter inlet pressure regulating valve 4 is opened, and hydraulic oil is adjusted by hydraulic torque converter inlet pressure
Section valve 4 flows to radiator 7.Hydraulic oil enters A oil circuits after reducing oil temperature by radiator 7.Into the oil two-way of A oil circuits, one
Partly oily control oil pump 9 is drawn from A oil circuits, and another way oil stream is to pressure-regulating valve 8.Pressure is set when reaching pressure-regulating valve,
Hydraulic oil returns to main pump 2 by pressure-regulating valve 8) inlet port.
Pressure is passed through the supply shifting control system of essential oil filter 10 and control oil pressure pressure by control oil pump 9 after A oil circuit oil suctions
Force regulating valve 11, when controlling the oil pressure of oil pressure pressure-regulating valve 11 to reach pressure-regulating valve design load, hydraulic oil is by control oil
Pressure pressure regulating valve 11 enters lubricant passage way and lubrication pressure pressure-regulating valve 12, when lubricant passage way oil pressure reaches lubrication pressure pressure
During force regulating valve setting value, hydraulic oil enters A oil circuits by lubrication pressure pressure-regulating valve 12.
The hydraulic oil supply system for automatic transmission of the present invention, hydraulic power loss can be reduced.The present invention's
According to system requirements in hydraulic oil supply system, fuel feeding is carried out to low-pressure system and high-pressure system respectively, and uses half-closed loop,
Reduce the power loss of system.
1) when control signal is low-voltage, solenoid directional control valve 5 does not work, the phase of hydraulic torque converter inlet pressure regulating valve 4
When in hydraulic torque converter entrance constant pressure valve, it only has feedback cavity I to work, and the fixed pressure of the hydraulic torque converter entrance constant pressure valve is high.
At this moment most of flow of main pump 2 enters radiator 7 after hydraulic torque converter and hydraulic torque converter outlet pressure regulating valve 6,
The hydraulic torque converter outlet pressure regulating valve 6 exports constant pressure valve equivalent to hydraulic torque converter.At this moment hydraulic torque converter is in normal
Working condition.
2) when control signal is high voltage, solenoid directional control valve 5 works, hydraulic torque converter entrance constant pressure valve (hydraulic torque converting
Device inlet pressure regulating valve 4) feedback cavity I and feedback cavity II work simultaneously, the fixed pressure of the hydraulic torque converter entrance constant pressure valve
Reduce.At this moment by hydraulic torque converter and hydraulic torque converter entrance constant pressure valve, (hydraulic torque converter exports most of flow of main pump 2
Pressure-regulating valve 6) enter radiator 7 afterwards.At this moment hydraulic torque converter is in off position.
3) front 1) and 2) in solenoid directional control valve 5 can also use pilot operated directional control valve.
4) because the flow of main pump 2 is more than control oil pump 9, a part of hydraulic oil of A oil circuits enters control oil pump 9, another
Part returns to the inlet port of main pump 2 by pressure-regulating valve 8.So reduce oil suction and filter 1 oil absorption from fuel tank.Therefore can be with
Reduce the volume of fuel tank.
5) control oil pump by being by controlling oil pressure pressure-regulating valve 11 to supply gearshift control by hydraulic oil after A oil circuit oil suctions
System, the flow supply lubricant passage way of the overflow of control oil pressure pressure-regulating valve 11, and the liquid of the overflow of lubrication pressure pressure-regulating valve 12
Force feed also returns to A oil circuits.The same oil absorption for reducing oil suction filter 1.
Claims (4)
1. a kind of hydraulic oil supply system for automatic transmission, it is characterised in that including main pump (2) and control oil pump (9)；Institute
The main pump (2) stated is from fuel tank oil suction, and hydraulic oil is supplied main pump (2) into hydraulic torque converter (3) and hydraulic torque converter inlet pressure is adjusted
Valve (4) is saved, hydraulic oil arrives hydraulic torque converter outlet pressure regulating valve (6) after hydraulic torque converter (3)；Work as hydraulic torque converter
(3) when the pressure in reaches designed pressure, hydraulic torque converter outlet pressure regulating valve (6) is opened, and hydraulic oil becomes by fluid power
Turn round device outlet pressure regulating valve (6) and flow to radiator (7)；When hydraulic torque converter (3) inlet pressure reaches design pressure, fluid power
Torque converter inlet pressure regulating valve (4) is opened, and hydraulic oil flows to radiator by hydraulic torque converter inlet pressure regulating valve (4)
(7)；Hydraulic oil enters A oil circuits afterwards by radiator (7)；Into the oil two-way of A oil circuits, part oil is through control oil pump (9)
Drawn from A oil circuits, another way oil stream is to pressure-regulating valve (8), and when reaching pressure-regulating valve (8) setting pressure, hydraulic oil passes through
Pressure-regulating valve (8) returns to the inlet port of main pump (2).
A kind of 2. hydraulic oil supply system for automatic transmission according to claim 1, it is characterised in that control oil pump
(9) pressure is filtered into (10) by essential oil after A oil circuit oil suctions and supplies shifting control system and control oil pressure pressure-regulating valve (11)；
When controlling oil pressure pressure-regulating valve (11) oil pressure to reach pressure-regulating valve design load, hydraulic oil is by the pressure regulation of control oil pressure
Valve (11) enters lubricant passage way and lubrication pressure pressure-regulating valve (12), when lubricant passage way oil pressure reaches the regulation of lubrication pressure pressure
During valve (12) setting value, hydraulic oil enters A oil circuits by lubrication pressure pressure-regulating valve (12).
3. a kind of hydraulic oil supply system for automatic transmission according to claim 1 or 2, it is characterised in that described
Main pump (2) by oil suction filter (1) from fuel tank oil suction.
A kind of 4. hydraulic oil supply system for automatic transmission according to claim 1 or 2, it is characterised in that electromagnetism
When reversal valve (5) does not work, hydraulic torque converter inlet pressure regulating valve (4) only has feedback cavity I to work, hydraulic torque converter entrance pressure
The pressure of force regulating valve (4) is high；When solenoid directional control valve (5) works, the feedback cavity I of hydraulic torque converter inlet pressure regulating valve (4)
Worked simultaneously with feedback cavity II, the pressure of hydraulic torque converter inlet pressure regulating valve (4) reduces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265154.9A CN103291877B (en) | 2013-06-27 | 2013-06-27 | A kind of hydraulic oil supply system for automatic transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310265154.9A CN103291877B (en) | 2013-06-27 | 2013-06-27 | A kind of hydraulic oil supply system for automatic transmission |
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| Publication Number | Publication Date |
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| CN103291877A CN103291877A (en) | 2013-09-11 |
| CN103291877B true CN103291877B (en) | 2018-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310265154.9A Active CN103291877B (en) | 2013-06-27 | 2013-06-27 | A kind of hydraulic oil supply system for automatic transmission |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109372828B (en) * | 2018-10-15 | 2022-09-09 | 中国北方车辆研究所 | Hydraulic control system for comprehensive transmission device |
| CN113294516B (en) * | 2020-02-21 | 2022-07-12 | 广州汽车集团股份有限公司 | Hydraulic oil supply system of transmission |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147014A (en) * | 2005-03-22 | 2008-03-19 | Zf腓德烈斯哈芬股份公司 | Method and device for controlling the oil supply of an automatic gearbox and a starting element |
| CN101230920A (en) * | 2006-07-17 | 2008-07-30 | 赫尔比格驱动技术有限公司 | Method of operating a dct hydraulic power control system as well as dct hydraulic power control system |
| EP2085655A1 (en) * | 2008-01-29 | 2009-08-05 | GM Global Technology Operations, Inc. | Automatic transmission |
| CN101870280A (en) * | 2010-06-17 | 2010-10-27 | 徐工集团工程机械股份有限公司科技分公司 | Loader and circular cooling and lubricating system of torque converter thereof |
| CN101907165A (en) * | 2009-06-08 | 2010-12-08 | 爱信精机株式会社 | The hydraulic supply unit of automatic transmission |
| CN101970906A (en) * | 2008-03-10 | 2011-02-09 | 丰田自动车株式会社 | Transmission hydraulic circuit, transmission provided therewith and vehicle equipped with same |
| CN103133688A (en) * | 2011-11-29 | 2013-06-05 | 现代自动车株式会社 | Hydraulic pressure control apparatus for automatic transmission |
-
2013
- 2013-06-27 CN CN201310265154.9A patent/CN103291877B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147014A (en) * | 2005-03-22 | 2008-03-19 | Zf腓德烈斯哈芬股份公司 | Method and device for controlling the oil supply of an automatic gearbox and a starting element |
| CN101230920A (en) * | 2006-07-17 | 2008-07-30 | 赫尔比格驱动技术有限公司 | Method of operating a dct hydraulic power control system as well as dct hydraulic power control system |
| EP2085655A1 (en) * | 2008-01-29 | 2009-08-05 | GM Global Technology Operations, Inc. | Automatic transmission |
| CN101970906A (en) * | 2008-03-10 | 2011-02-09 | 丰田自动车株式会社 | Transmission hydraulic circuit, transmission provided therewith and vehicle equipped with same |
| CN101907165A (en) * | 2009-06-08 | 2010-12-08 | 爱信精机株式会社 | The hydraulic supply unit of automatic transmission |
| CN101870280A (en) * | 2010-06-17 | 2010-10-27 | 徐工集团工程机械股份有限公司科技分公司 | Loader and circular cooling and lubricating system of torque converter thereof |
| CN103133688A (en) * | 2011-11-29 | 2013-06-05 | 现代自动车株式会社 | Hydraulic pressure control apparatus for automatic transmission |
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| CN103291877A (en) | 2013-09-11 |
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