CN206719320U - A kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system - Google Patents
A kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system Download PDFInfo
- Publication number
- CN206719320U CN206719320U CN201720404546.2U CN201720404546U CN206719320U CN 206719320 U CN206719320 U CN 206719320U CN 201720404546 U CN201720404546 U CN 201720404546U CN 206719320 U CN206719320 U CN 206719320U
- Authority
- CN
- China
- Prior art keywords
- oil
- pump
- motor
- hydraulic
- main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 114
- 239000010720 hydraulic oil Substances 0.000 claims description 39
- 238000009825 accumulation Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 239000000446 fuel Substances 0.000 abstract 1
- 238000011217 control strategy Methods 0.000 description 6
- 239000012208 gear oil Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000010572 single replacement reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Steering Control In Accordance With Driving Conditions (AREA)
- Power Steering Mechanism (AREA)
Abstract
The utility model discloses a kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system, including ECU controllers (1), main pump oil motor (2), main oil pump (3), stand-by motor (4), auxiliary oil pump (5), oil storage tank (16), accumulator (9), flow controlling unit (8), steering gear (6), torque angle sensor (7), first pressure sensor (10) and second pressure sensor (11), a large amount of losses of high pressure liquid force feed when general storage-type electric hydraulic power-assist steering system small angle tower as caused by permanent current formula steering gear turns to can be greatly lowered in the program, so as to reduce working time of the main pump oil motor in high load capacity section, reduce system energy consumption；The sluggish sense of power-assisted of the common storage-type electric hydraulic power-assist steering system in fast steering caused by fuel feeding lags can be eliminated simultaneously.
Description
Technical field
The utility model is related to a kind of vehicle booster steering control system, more particularly to a kind of commercial car energy-accumulated electric switched hydraulic pressure
Hybrid servo steering system.
Background technology
Energy-accumulated electric switched hybrid hydraulic power-assisted (MA-EHPS) system is a kind of storage-type electric hydraulic power-assist steering system.
Hybrid power-assisted by steering gear oil inlet a set of low-power electro pump in parallel, by the go to action of varying strength to power-assisted
Traffic demand separates, and improves the utilization ratio of accumulator mesohigh hydraulic oil, effectively reduces the work of main pump oil motor
Make load, further reduce system energy consumption.
A kind of storage-type electric hydraulic power-assist steering system is proposed in patent CN105752152A, it is direct using accumulator
Power-assisted flow is provided to steering gear, reduces the working time of motor.But the system is in small range adjustment steering angle etc. pair
Still need to open electromagnetic proportional valve in the relatively low operating mode of power-assisted traffic demand, because the hydraulic oil in now accumulator is in high pressure shape
State, it supplies the flow of permanent current steering gear and exceeds well over required level, causes the loss of a large amount of high pressure liquid force feeds, has in a disguised form aggravated electricity
The live load of motivation；This external system electromagnetic proportional valve when without go to action remains turned-off, and thus causes to occur soon unexpected
Serious power-assisted delay sense during fast go to action.Patent CN 105644620 proposes a kind of accumulation of energy using gerotor type steering gear
Formula electric hydraulic power-assisted steering system, loss of the accumulator mesohigh hydraulic oil in low-intensity go to action is reduced, but often
Enclosed steering gear can deteriorate time positive characteristic of steering, while also improve the cost of whole system.
Utility model content
The purpose of this utility model is to overcome the shortcomings of prior art, proposes a kind of commercial car power-assisted steering system of high energy efficiency
System, the system includes a set of high pressure accumulator, and a set of low-power electro pump for being connected in parallel on steering gear porch, for meeting
To the different demands of power-assisted flow in the go to action of varying strength, so as to reduce the loss of accumulator mesohigh hydraulic oil, subtract
Few main pump oil motor is in the working time of high load capacity section, so as to reduce the total energy consumption of system；The system can also eliminate traditional storage
The sluggish sense of power-assisted of energy formula electric hydraulic power-assisted steering system, improves and turns to feel.On this basis, the utility model also provides
A kind of control strategy of the application electric hydraulic power-assisted steering system.
The technical solution of the utility model there is provided a kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system,
Including ECU controllers, main pump oil motor, main oil pump, stand-by motor, auxiliary oil pump, oil storage tank, accumulator, flow controlling unit,
Steering gear, torque angle sensor, first pressure sensor and second pressure sensor, it is characterised in that：
The output shaft of main pump oil motor and the input of main oil pump connect, and the oil-out of main oil pump passes through oil pipe and steering gear
Oil inlet connection；
Accumulator is arranged on the oil pipe between main oil pump and steering gear；
Flow controlling unit is arranged on the oil pipe between accumulator and steering gear to control the power-assisted stream that accumulator provides
Amount；
First pressure sensor is arranged on the oil input channel of flow controlling unit to detect the pressure of hydraulic oil in accumulator；
The output shaft of stand-by motor and the input of auxiliary oil pump connect, and the oil-out of auxiliary oil pump is arranged on flow control
Between unit and steering gear oil inlet；
Second pressure sensor is arranged on steering gear oil inlet front end, to detect the operating pressure of steering gear；
The delivery outlet of steering gear is connected with the oil return opening of oil storage tank；
First pressure sensor, torque angle sensor electrically connect with ECU controllers respectively；
ECU controllers are electrically connected with main pump oil motor to control the start and stop of main pump oil motor and power output；
ECU controllers are electrically connected with stand-by motor to control the start and stop of stand-by motor and power output；
ECU controllers are electrically connected to flow controlling unit to control the aperture of corresponding magnetic valve；
Further, torque angle sensor becomes one formula structure.
Further, accumulator is bladder type hydropneumatic accumulator.
Further, main oil pump and auxiliary oil pump are gear pump.
Further, in addition to the first hydraulic oil cleaner, the second hydraulic oil cleaner, the 3rd hydraulic oil cleaner,
Four hydraulic oil cleaner liquid, wherein, the first hydraulic oil cleaner is located at the oil inlet of flow controlling unit, the second hydraulic oil filtering
Device is located at oil inlet, the 4th hydraulic oil cleaner liquid of auxiliary oil pump located at oil inlet, the 3rd hydraulic oil cleaner of main oil pump
Located at oil storage tank oil return opening the utility model proposes energy-accumulated electric switched hybrid hydraulic power-assisted steering.
This is that the beneficial effect of utility model is：Power-assisted source is carried out according to the traffic demand of different phase in go to action
Selection, the initial stage of low-intensity, small angle tower go to action and big corner go to action is provided using low-power electro pump and helped
Power flow, power-assisted flow is provided to the later stage of big corner go to action using accumulator, so as to reduce accumulator mesohigh
A large amount of losses of the hydraulic oil in low discharge demand stage.Because the oil pressure level of hydraulic oil in accumulator determines main pump oil motor
Live load, therefore the utility model can reduce working time of the main pump oil motor in high load region, reduce system energy consumption；
The utility model proposes energy-accumulated electric switched hybrid hydraulic servo steering system control strategy according to gather in real time speed, throttle
Pedal position signal predicts whether to will appear from big corner go to action, and controls opening for auxiliary power-assisted module according to prediction result
Stop, so as to eliminate the sluggish sense of power-assisted, improve steering feel；Hydraulic oil in accumulator is set dynamically according to GES
Low oil pressure threshold range, the discontinuous operation of main pump oil motor is realized, reduce the energy of main pump oil motor under low steering demand operating mode
Consumption.
Brief description of the drawings
Fig. 1 is the structural representation for the energy-accumulated electric switched hybrid hydraulic servo steering system that the present embodiment provides；
Fig. 2 is the control strategy flow chart for the energy-accumulated electric switched hybrid hydraulic servo steering system that the present embodiment provides.
Wherein：1-ECU controllers, 2- main pump oil motors, 3- main oil pumps, 4- stand-by motors, 5- auxiliary oil pumps, 6- are turned to
Device, 7- torque angle sensors, 8- flow controlling units, 9- accumulators, 10- first pressure sensors, 11- second pressures sensing
Device, 12- the first hydraulic oil cleaners, 13- the second hydraulic oil cleaners, the hydraulic oil cleaners of 14- the 3rd, the hydraulic oil of 15- the 4th
Cleaner, 16- oil storage tanks.
Embodiment
1-2 is described in detail the technical scheme in the embodiment of the utility model below in conjunction with the accompanying drawings.
As shown in figure 1, this embodiment offers a kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system, including
Main pump oil motor 2, main oil pump 3, stand-by motor 4, auxiliary oil pump 5, oil storage tank 16, accumulator 9, flow controlling unit 8, ECU controls
Device 1 processed, steering gear 6, torque angle sensor 7, first pressure sensor 10 and second pressure sensor 11.
The output shaft of main pump oil motor 2 is connected with the input of main oil pump 3, and the oil-out of main oil pump 3 by oil pipe and turns
Connected to the oil inlet of device 6；
Accumulator 9 is arranged on the oil pipe between main oil pump 3 and steering gear 6 by a three-port structure part；
Flow controlling unit 8 is arranged on the oil pipe between accumulator 9 and steering gear 6 to control helping for the offer of accumulator 9
Power flow；
Pressure sensor 10 is arranged on the oil input channel of flow controlling unit to detect the pressure of hydraulic oil in accumulator 9；
The output shaft of stand-by motor 4 is connected with the input of auxiliary oil pump 5, and the oil-out of auxiliary oil pump 5 passes through one three
Logical structural member is arranged between flow controlling unit 8 and the oil inlet of steering gear 6；
Second pressure sensor 11 is arranged on the oil inlet front end of steering gear 6, to detect the operating pressure of steering gear 6；
The delivery outlet of steering gear 6 is connected with the oil return opening of oil storage tank 16；
First pressure sensor 10 electrically connects with ECU controllers 1；
Torque angle sensor 7 is electrically connected with ECU controllers 1 to transmit respective electric signal；
ECU controllers 1 are electrically connected with main pump oil motor 2 to control the start and stop of main pump oil motor 2 and power output；
ECU controllers 1 are electrically connected with stand-by motor 4 to control the start and stop of stand-by motor and power output；
ECU controllers 1 are electrically connected to flow controlling unit 8 to control the aperture of corresponding magnetic valve；
In one embodiment of the present utility model, torque angle sensor 7 becomes one formula structure.
In one embodiment of the present utility model, accumulator 9 is bladder type hydropneumatic accumulator.
In one embodiment of the present utility model, steering gear 6 is ball-and-nut steering gear open in usual.
In one embodiment of the present utility model, main oil pump 3, auxiliary oil pump 5 are gear pump.
In one embodiment of the present utility model, energy-accumulated electric switched hybrid hydraulic servo steering system also includes the first liquid
Cleaner 12, the second hydraulic oil cleaner 13, the 3rd hydraulic oil cleaner 14, the 4th hydraulic oil cleaner liquid 15 are pressed oil, wherein,
First hydraulic oil cleaner 12 enters located at oil inlet, the second hydraulic oil cleaner 13 of flow controlling unit 8 located at main oil pump 3
Hydraulic fluid port, the 3rd hydraulic oil cleaner 14 are located at oil storage tank 16 located at oil inlet, the 4th hydraulic oil cleaner liquid 15 of auxiliary oil pump 5
Oil return opening.
In one embodiment of the present utility model, the output shaft of main pump oil motor 2 is with the input shaft of main oil pump 3 same
On straight line, the output shaft of stand-by motor 4 and the input shaft of auxiliary oil pump 5 on the same line, main pump oil motor 2, main oil pump 3,
Stand-by motor 4, auxiliary oil pump 5, check valve 17,18 and oil storage tank 16 become one formula structure.
In one embodiment of the present utility model, flow controlling unit 8 is to be integrated in the ten of flow controlling unit body
Two groups of normally closed ratio Solenoid ball valves.
In one embodiment of the present utility model, ECU controllers 1, flow controlling unit 8 and pressure sensor 10 are integrated
For integral type structure.
The utility model proposes the hybrid servo steering system control strategy of energy-accumulated electric switched, by detecting gas pedal position
Confidence number and GES, judge whether driver will carry out big corner go to action, to judge whether to need pre-cooling
Stand-by motor 4.If judged result is false, output control signal closes down stand-by motor 4；If judged result is true, output control
Signal enabling stand-by motor 4 processed, provide power-assisted flow in advance for steering gear 6.
The utility model proposes the hybrid servo steering system control strategy of energy-accumulated electric switched, by detect steering moment,
Steering angle judges whether go to action occur.If judged result is true, start stand-by motor 4；If judged result is false, protect
Hold standby.By detecting the operating pressure of steering gear oil inlet and compared with critical operating pressure threshold value, to judge now
Steering-load, and according to judged result in stand-by motor assistant mode with being selected and being switched in accumulator assistant mode；
If the operating pressure that comparative result characterizes the oil inlet of steering gear 6 is less than critical operating pressure threshold value, output control signal starts
Stand-by motor 4, output control signal close flow controlling unit 8, start stand-by motor assistant mode and provide power-assisted flow；If than
The operating pressure that relatively result characterizes steering gear oil inlet is higher than critical operating pressure threshold value, then output control signal turn-on flow rate
Control unit 8, output control signal close down stand-by motor 4, start accumulator assistant mode and provide power-assisted flow；Accumulator power-assisted
Pattern, the aperture of flow controlling unit 8 is calculated according to steering moment, steering angle and speed.In a reality of the present utility model
Apply in example, the aperture of flow controlling unit 8 is the unlatching quantity in 12 groups of normally closed ratio Solenoid ball valves.
The utility model proposes the hybrid servo steering system control strategy of energy-accumulated electric switched, according to GES calculate store
Can in device 9 hydraulic oil low oil pressure threshold range, by detect in accumulator 9 pressure of hydraulic oil and with accumulator low oil pressure threshold
Value scope is compared.If the oil pressure that judged result is characterized in accumulator 9 is less than the lower limit of low oil pressure threshold value, output control letter
Number startup main pump oil motor 2；If the oil pressure that judged result is characterized in accumulator 9 is higher than the upper limit of low oil pressure threshold value, output control
Signal processed closes down main pump oil motor 2.
Although principle of the present utility model is described in detail above in conjunction with preferred embodiment of the present utility model,
It should be appreciated by those skilled in the art that above-described embodiment is only the explanation to exemplary implementation of the present utility model, and
The non-restriction to the utility model scope.Details in embodiment does not form the limitation to the scope of the utility model,
In the case of without departing substantially from spirit and scope of the present utility model, any equivalent transformation based on technical solutions of the utility model, letter
Single replacement etc. is obvious to be changed, and is all fallen within scope of protection of the utility model.
Claims (5)
1. a kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system, including ECU controllers (1), main pump oil motor
(2), main oil pump (3), stand-by motor (4), auxiliary oil pump (5), oil storage tank (16), accumulator (9), flow controlling unit (8), turn
To device (6), torque angle sensor (7), first pressure sensor (10) and second pressure sensor (11), its feature exist
In：
The output shaft of main pump oil motor (2) is connected with the input of main oil pump (3), the oil-out of main oil pump (3) by oil pipe with
The oil inlet connection of steering gear (6)；
Accumulator (9) is arranged on the oil pipe between main oil pump (3) and steering gear (6)；
Flow controlling unit (8) is arranged on the oil pipe between accumulator (9) and steering gear (6) to control accumulator (9) to provide
Power-assisted flow；
First pressure sensor (10) is arranged on the oil input channel of flow controlling unit (8) to detect hydraulic oil in accumulator (9)
Pressure；
The output shaft of stand-by motor (4) is connected with the input of auxiliary oil pump (5), and the oil-out of auxiliary oil pump (5) is arranged on stream
Between amount control unit (8) and steering gear (6) oil inlet；
Second pressure sensor (11) is arranged on steering gear (6) oil inlet front end, to detect the operating pressure of steering gear (6)；
The delivery outlet of steering gear (6) is connected with the oil return opening of oil storage tank (16)；
First pressure sensor (10), torque angle sensor (7) electrically connect with ECU controllers (1) respectively；
ECU controllers (1) are electrically connected with main pump oil motor (2) to control the start and stop of main pump oil motor (2) and power output；
ECU controllers (1) are electrically connected with stand-by motor (4) to control the start and stop of stand-by motor (4) and power output；
ECU controllers (1) are electrically connected to flow controlling unit (8) to control the aperture of corresponding magnetic valve.
2. commercial car energy-accumulated electric switched hydraulic hybrid servo steering system according to claim 1, it is characterised in that：Moment of torsion
Rotary angle transmitter (7) becomes one formula structure.
3. commercial car energy-accumulated electric switched hydraulic hybrid servo steering system according to claim 1, it is characterised in that：Accumulation of energy
Device (9) is bladder type hydropneumatic accumulator.
4. commercial car energy-accumulated electric switched hydraulic hybrid servo steering system according to claim 1, it is characterised in that：Main oil
Pump (3) and auxiliary oil pump (5) are gear pump.
5. a kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system according to claim 1, its feature exist
In：Also include the first hydraulic oil cleaner (12), the second hydraulic oil cleaner (13), the 3rd hydraulic oil cleaner (14), the 4th
Hydraulic oil cleaner liquid (15), wherein, the first hydraulic oil cleaner (12) is located at the oil inlet of flow controlling unit (8), second
Hydraulic oil cleaner (13) enters located at oil inlet, the 3rd hydraulic oil cleaner (14) of main oil pump (3) located at auxiliary oil pump (5)
Hydraulic fluid port, the 4th hydraulic oil cleaner liquid (15) are located at the oil return opening of oil storage tank (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720404546.2U CN206719320U (en) | 2017-04-18 | 2017-04-18 | A kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720404546.2U CN206719320U (en) | 2017-04-18 | 2017-04-18 | A kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206719320U true CN206719320U (en) | 2017-12-08 |
Family
ID=60504981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720404546.2U Expired - Fee Related CN206719320U (en) | 2017-04-18 | 2017-04-18 | A kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206719320U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110626422A (en) * | 2019-10-10 | 2019-12-31 | 郑州宇通重工有限公司 | New forms of energy electricelectric sanitation car power-assisted steering emergency compensation control system |
| CN111824251A (en) * | 2020-07-30 | 2020-10-27 | 清华大学 | Energy-saving intelligent electro-hydraulic steering system and control method |
| CN112065624A (en) * | 2020-09-10 | 2020-12-11 | 潍柴动力股份有限公司 | High-pressure oil pump mounting method, engine and vehicle |
| CN113104100A (en) * | 2021-05-27 | 2021-07-13 | 清华大学 | Control method and system for energy-saving intelligent electro-hydraulic steering system |
| CN114394152A (en) * | 2020-10-08 | 2022-04-26 | 沃尔沃卡车集团 | Method for controlling a steering assistance system of a vehicle |
-
2017
- 2017-04-18 CN CN201720404546.2U patent/CN206719320U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110626422A (en) * | 2019-10-10 | 2019-12-31 | 郑州宇通重工有限公司 | New forms of energy electricelectric sanitation car power-assisted steering emergency compensation control system |
| CN111824251A (en) * | 2020-07-30 | 2020-10-27 | 清华大学 | Energy-saving intelligent electro-hydraulic steering system and control method |
| CN112065624A (en) * | 2020-09-10 | 2020-12-11 | 潍柴动力股份有限公司 | High-pressure oil pump mounting method, engine and vehicle |
| CN112065624B (en) * | 2020-09-10 | 2021-10-08 | 潍柴动力股份有限公司 | High-pressure oil pump mounting method, engine and vehicle |
| CN114394152A (en) * | 2020-10-08 | 2022-04-26 | 沃尔沃卡车集团 | Method for controlling a steering assistance system of a vehicle |
| CN113104100A (en) * | 2021-05-27 | 2021-07-13 | 清华大学 | Control method and system for energy-saving intelligent electro-hydraulic steering system |
| CN113104100B (en) * | 2021-05-27 | 2022-07-19 | 清华大学 | Control method and system for energy-saving intelligent electro-hydraulic steering system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206719320U (en) | A kind of commercial car energy-accumulated electric switched hydraulic hybrid servo steering system | |
| CN103267034B (en) | Load sensitive hydraulic system with compensation valve energy recovery function | |
| WO2013159590A1 (en) | Energy regeneration type forklift hydraulic system | |
| CN103174688A (en) | Hydraulic energy-saving system | |
| CN106088208B (en) | Excavator turns round hydraulic control system | |
| CN102030265A (en) | Crane hydraulic system for load sensitive ship | |
| CN203582302U (en) | Control valve group, hydraulic control system and automobile crane | |
| CN207421033U (en) | A kind of secondary pressure adjusts hydraulic system | |
| CN206719318U (en) | A kind of electric hydraulic power-assisted steering system that there is power-off to keep assist function in short-term | |
| CN109026867A (en) | The energy-saving hydraulic system of large-tonnage storage battery forktruck | |
| CN202624354U (en) | Hydraulic power steering system of hybrid vehicle | |
| CN206244352U (en) | A kind of shunting pressure-gradient control valve and the forklift hydraulic system with slow-speed of revolution unloading function | |
| CN208454432U (en) | A kind of forklift hydraulic system that decline energy is recyclable | |
| CN203890013U (en) | Double-pump oil supply and energy recovery type forklift hydraulic system | |
| CN217320496U (en) | Rear axle steering system, rear axle device and vehicle | |
| CN108708422A (en) | A kind of energy saving excavator | |
| CN102442345A (en) | Control method of electro-hydraulic type power-assisted steering system | |
| CN112879391B (en) | Oil supplementing device and closed system | |
| CN207809510U (en) | A kind of automobile-used steering boost system of electric | |
| CN208931417U (en) | A kind of double accumulator electric hydraulic power-assisted steering systems | |
| CN111038579B (en) | Control device for steering control valve bank of electrically-driven chassis | |
| CN202243640U (en) | Energy-saving hydraulic power-assisted steering system | |
| CN107891910A (en) | A kind of automobile-used steering boost system of electric | |
| CN113915262A (en) | Novel braking and fan driving system and driving method | |
| CN213862399U (en) | Auxiliary energy accumulator type electric hydraulic power-assisted steering system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20180418 |