CN204688199U - A kind of electronlmobil hydraulic power-assist steering system - Google Patents
A kind of electronlmobil hydraulic power-assist steering system Download PDFInfo
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- CN204688199U CN204688199U CN201520423451.6U CN201520423451U CN204688199U CN 204688199 U CN204688199 U CN 204688199U CN 201520423451 U CN201520423451 U CN 201520423451U CN 204688199 U CN204688199 U CN 204688199U
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- controlling unit
- oil circuit
- flow controlling
- assist
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Abstract
The utility model discloses a kind of electronlmobil hydraulic power-assist steering system, comprise assist motor, driving switch and relay, also comprise and starting to work or out-of-work motor driver according to relay adhesive or disconnection control assist motor, motor driver is battery-powered, battery is also connected with flow controlling unit, described flow controlling unit comprises flow controlling unit body, import oil circuit and outlet oil circuit, the sidewall of flow controlling unit body communicates with import oil circuit and is provided with oil inlet, the sidewall of flow controlling unit body and communicate with outlet oil circuit and be provided with oil outlet, flow controlling unit body is provided with electromagnetic valve, the outlet of each electromagnetic valve communicates with outlet oil circuit, the import of each electromagnetic valve communicates with import oil circuit.The utility model can effective economize energy, extends the service life of assist motor, reduces noise, improve the NVH performance of car load; And flow control good stability, fluctuate little, and compact conformation, be convenient to install.
Description
Technical field
The utility model relates to motor turning field, specifically a kind of electronlmobil hydraulic power-assist steering system.
Background technology
For alleviating chaufeur, turn to burden particularly in commercial vehicle/comm..vehicle driver process, servo steering system is widely used in modern automobile.Wherein servo steering system is an electric hydraulic power-assisted steering system, wherein can be divided into Center-Open electric hydraulic power-assisted steering system and Center-Close electric hydraulic power-assisted steering system by often opening of steering control valve with normally closed again.
In prior art, the electric hydraulic power-assisted steering system that new-energy automobile adopts mostly is determines frequency permanent current formula.This electric hydraulic power-assisted steering system, under vehicle is in fired state, no matter whether vehicle is in motoring condition, and assist motor is all in running order.When vehicle be in original place standby time, because assist motor is in running order all the time, the easy service life affecting assist motor, and increase the consumption of electrokinetic cell, cause the wasting of resources, in addition, assist motor continuous working also can produce noise, affect NVH (Noise, Vibration, Harshness, noise, vibration and the sound vibration roughness) performance of car load.
Center-Close electric hydraulic power-assisted steering system generally comprises motor, oil pump, check valve, energy storage, the steering control valve of Center-Close, power-assisted oil cylinder, oil can, steering wheel angle sensor and system controller.Generally carry out by motor speed the assisted hydraulic oil flow that control oil pump provides, and by the compensating action of energy storage, motor can not work when not turning to.Also have a kind of Center-Close electric hydraulic power-assisted steering system, increase proportion magnetic valve in energy storage outlet, energy storage stores the hydraulic oil of a large amount of high pressure, as power-assisted propulsion source, controls assisted hydraulic oil flow by electromagnetic valve aperture.Change because power-assisted oil cylinder load pressure changes with steering situation, cause electromagnetic valve into and out of the change of hydraulic fluid port pressure reduction, cause hydraulic power change in electromagnetic valve, make electromagnetic valve aperture unstable, flow control inaccuracy, unstable.And maximum power-assisted flow is larger needed for general hydraulic power-assist steering system, with vehicle size from a few Liter Per Minute to tens Liter Per Minutes not etc., electromagnetic valve must have the maximum of corresponding size and pass through flow, make required throttle diameter and maximum opening larger, thus hydraulic power fluctuation amplitude is comparatively large, flow fluctuation is also larger.And the deficiency of assisted hydraulic oil flow control accuracy and stability, power-assisted feel must be caused to be deteriorated, even to bring potential safety hazard.
With the large discharge proportion magnetic valve of pressure compensator, although alleviate the problems referred to above to a certain extent, but also only in certain pressure differential range, flowrate variation amount is less, and along with the maximum increase by flow (namely port size or maximum lift increase), flowrate variation compensation effect is deteriorated, and fitting surface increases spillage also can be caused to strengthen.Therefore effect is not very good.
Utility model content
The purpose of this utility model is to provide a kind of electronlmobil hydraulic power-assist steering system, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of electronlmobil hydraulic power-assist steering system, comprise assist motor, driving switch and relay, described relay one end is connected with assist motor, and the other end is connected with driving switch, and the gear of relay residing for driving switch controls the mode of operation of assist motor, also comprise and starting to work or out-of-work motor driver according to relay adhesive or disconnection control assist motor, motor driver is connected between assist motor and relay, motor driver is battery-powered, battery is also connected with flow controlling unit, described flow controlling unit comprises the flow controlling unit body in solid solid, flow controlling unit body interior and be positioned at lower floor and be provided with import oil circuit, flow controlling unit body interior and be positioned at upper strata and be provided with outlet oil circuit, the sidewall of flow controlling unit body and communicate with import oil circuit and be provided with oil inlet, the sidewall of flow controlling unit body and communicate with outlet oil circuit and be provided with oil outlet, flow controlling unit body is provided with two or more electromagnetic valve, the outlet of each electromagnetic valve communicates with outlet oil circuit, the import of each electromagnetic valve communicates with import oil circuit, also comprise the power steering pump with intergral reservoir be connected with described assist motor, power steering pump with intergral reservoir starts or stops work according to the mode of operation of assist motor.
As further program of the utility model: described power steering pump with intergral reservoir is connected with one end of deflector by turning to oil circuit, the other end of deflector is connected with steering handwheel, deflector, when the work of power steering pump startup, provides power steering by turning to oil circuit for steering handwheel.
As the utility model further scheme: be also connected with between described driving switch and relay for gathering gear signal residing for driving switch and according to the entire car controller of the adhesive of gear signal control relay or disconnection.
As the utility model further scheme: described battery is lithium cell.
As the utility model further scheme: described in turn to oil circuit to be connected between deflector and power steering pump with intergral reservoir by flexible pipe or hydraulic pipe.
As the utility model further scheme: described electromagnetic valve is normally closed ratio Solenoid ball valve.
As the utility model further scheme: the quantity of described electromagnetic valve is 12, and it is arranged on described flow controlling unit body with the form of 3 × 4 arrays.
Compared with prior art, the beneficial effects of the utility model are: the utility model is by arranging the relay be connected with driving switch with assist motor, gear control relay adhesive residing for driving switch or disconnection, and then the mode of operation controlling assist motor.Can know that vehicle is current by the gear residing for driving switch and whether be in motoring condition, whether be in motoring condition according to vehicle and whether control assist motor work, can effective economize energy, the service life of prolongation assist motor, reduce noise, improve the NVH performance of car load; And add flow controlling unit in system, have larger maximum by flow, flow control good stability, fluctuates little, and compact conformation, be convenient to install.
Accompanying drawing explanation
Fig. 1 is the structural representation of electronlmobil hydraulic power-assist steering system;
Fig. 2 is the structural representation of flow controlling unit in electronlmobil hydraulic power-assist steering system;
Fig. 3 is the outlet oil channel structures schematic diagram of flow controlling unit in electronlmobil hydraulic power-assist steering system;
Fig. 4 is the imported oil line structure schematic diagram of flow controlling unit in electronlmobil hydraulic power-assist steering system;
Fig. 5 is the electromagnetic valve structure schematic diagram of flow controlling unit in electronlmobil hydraulic power-assist steering system;
Fig. 6 is the hydraulic schematic diagram of flow controlling unit in electronlmobil hydraulic power-assist steering system;
In figure: 1-steering handwheel, 2-deflector, 3-turn to oil circuit, 4-power steering pump with intergral reservoir, 5-assist motor, 6-motor driver, 7-relay, 8-battery, 9-flow controlling unit, 10-entire car controller, 11-driving switch, 91-flow controlling unit body, 92-to export oil circuit, 93-import oil circuit, 94-oil inlet, 95-oil outlet, 96-electromagnetic valve.97-cutoff port, 98-move iron.
Detailed description of the invention
Be described in more detail below in conjunction with the technical scheme of detailed description of the invention to this patent.
Refer to Fig. 1-6, a kind of electronlmobil hydraulic power-assist steering system, comprise assist motor 5, driving switch 11 and relay 7, relay 7 one end is connected with assist motor 5, and the other end is connected with driving switch 11; Relay 7 gear residing for driving switch 11 can control the mode of operation of assist motor 5.Under vehicle is in original place readiness for action, usually can not turns to, not need power steering, and under being in motoring condition, just may need power-assisted.Therefore, can be known that by the gear residing for driving switch 11 vehicle is current and whether be in motoring condition, whether be in motoring condition according to vehicle to control assist motor 5 and whether work, make assist motor 5 in case of need, just carry out work, can effective economize energy, extend the service life of assist motor, reduce noise, improve the NVH performance of car load.
Driving switch 11 has multiple gear, such as D shelves (Drive shelves, D Drive), R shelves (Reverse shelves, reverse gear) and N (Neutral shelves, neutral gear).After vehicle ignition, driving switch 11 is in different gears, can think that vehicle has different mode of operations.Such as, when driving switch 11 is in D shelves or R shelves, can think that vehicle is in motoring condition; And driving switch 11 is when being in N shelves, can think that vehicle is in original place readiness for action.
In the utility model embodiment, assist motor 5 can be controlled by the closed of relay 7 or disconnection and start to work or quit work.Particularly, when driving switch 11 is in D shelves or R shelves, assist motor 5 can be controlled by relay 7 and start to work; And driving switch 11 is when being in N shelves, assist motor 5 can be controlled by relay 7 and quit work.
Assist motor 5 is also connected with power steering pump with intergral reservoir 4, and power steering pump with intergral reservoir 4 can carry out starting or stoping work according to the mode of operation of assist motor 5.By the above-mentioned control to assist motor 5 mode of operation, assist motor 5 can be made just to work when needed, because assist motor 5 is connected with power steering pump with intergral reservoir 4, when assist motor 5 works, power can be provided for power steering pump with intergral reservoir 4, drive power steering pump with intergral reservoir 4 to start work; And when assist motor 5 quits work, power steering pump with intergral reservoir 4, owing to not having power resources, also will quit work.Work when needed by controlling power steering pump with intergral reservoir 4, can economize energy further, extend the service life of power steering pump with intergral reservoir 4, reduce noise, the NVH performance of raising car load.
Can further include deflector 2 and steering handwheel 1; Wherein, one end of deflector 2 can be connected with steering handwheel 1, and the other end can be connected by turning to oil circuit 3 with power steering pump with intergral reservoir 4; Deflector 2, when power steering pump with intergral reservoir 4 starts work, can provide power steering for steering handwheel 1.Wherein, oil circuit 3 is turned to can be connected between deflector 2 and power steering pump with intergral reservoir 4 by flexible pipe or hydraulic pipe.When needs turn to, by this electric hydraulic power-assisted steering system, when acting on less operating effort to steering handwheel 1, larger steering effort can be realized, thus make the operation of steering handwheel more flexible, light.
In the utility model embodiment, the type of assist motor can be selected as required, such as DC machine or alternating current dynamo, preferably adopt three-phase frequency alternating current dynamo surely.In order to drive assist motor 5 to work, can arrange motor driver 6 between assist motor 5 and relay 7, this motor driver 6 or can disconnect the startup work of control assist motor 5 or quit work according to relay 7 adhesive.
Further, said system can also comprise the battery 8 for above-mentioned motor driver 6 power supply, wherein, battery 8 preferably adopts lithium cell, battery 8 is also connected with flow controlling unit 9, described flow controlling unit 9 comprises a flow controlling unit body 91, and flow controlling unit body 91 is solid solid, and it can be cuboid, cylinder or the solid etc. through other polygon stretching gained.Flow controlling unit body 91 inside is provided with upper and lower two-layer oil circuit, and upper strata oil circuit is outlet oil circuit 92, and lower floor's oil circuit is import oil circuit 93.The sidewall of flow controlling unit body 91 is provided with an oil inlet 94 communicated with import oil circuit 93, is also provided with an oil outlet 95 communicated with outlet oil circuit 92 at the sidewall of flow controlling unit body 91.The utility model also comprises two or more and is arranged on electromagnetic valve 96 on flow controlling unit body 91, and the outlet of each electromagnetic valve 96 communicates with outlet oil circuit 92, and the import of each electromagnetic valve 96 communicates with import oil circuit 93.
Electromagnetic valve 96 selects normally closed ratio Solenoid ball valve.The quantity of electromagnetic valve 96 is 12, and it is arranged on flow controlling unit body 91 with the form of 3 × 4 arrays.
The cylindrical cavity that flow controlling unit body 91 press-fits Solenoid ball valve can't be filled up by Solenoid ball valve, therefore, the toroidal cavity of Solenoid ball valve periphery becomes a part for outlet oil circuit 92, and the cylindrical cavity below Solenoid ball valve import becomes a part for import oil circuit 93.That is to say: the outlet of each Solenoid ball valve is all communicated with by outlet oil circuit 92, and the import of each Solenoid ball valve also is all communicated with to get up by import oil circuit 93.Therefore, be parallel relationship between each electromagnetic valve 96, as long as open any one Solenoid ball valve (all the other Solenoid ball valves are all in closed condition), oil just can enter into outlet oil circuit by the restriction 97 of this Solenoid ball valve.
The aperture 0.4mm of the cutoff port 97 of each Solenoid ball valve, dynamic iron 98 lift 0.22mm, be maximumly about 2L/min by flow, then flow controlling unit is overall is maximumly about 24L/min by flow.When steering situation occurs, when needing to provide assisted hydraulic oil, first control a Solenoid ball valve and increase aperture gradually, then assisted hydraulic oil flow increases gradually, most as many as about 2L/min.Can ensure that the initial rate of change of assisted hydraulic oil flow is less like this, thus reduce the impact sense of power steering.Along with power steering hydraulic oil demand volume increases, increase Solenoid ball valve gradually and open number.By opening several Solenoid ball valves completely and controlling the aperture of one of them Solenoid ball valve, when steering situation acute variation, also can by flow fluctuation basic controlling in the scope of 2L/min.
Said system can further include the entire car controller 9 be connected between driving switch 11 and relay 7; Entire car controller 9 for gathering the gear signal residing for driving switch 11, and according to gear signal control relay 5 adhesive or disconnection.
Above the better embodiment of this patent is explained in detail, but this patent is not limited to above-mentioned embodiment, in the ken that one skilled in the relevant art possesses, can also makes a variety of changes under the prerequisite not departing from this patent aim.
Claims (8)
1. an electronlmobil hydraulic power-assist steering system, comprise assist motor, driving switch and relay, it is characterized in that, described relay one end is connected with assist motor, the other end is connected with driving switch, and the gear of relay residing for driving switch controls the mode of operation of assist motor, also comprise and starting to work or out-of-work motor driver according to relay adhesive or disconnection control assist motor, motor driver is connected between assist motor and relay, motor driver is battery-powered, battery is also connected with flow controlling unit, described flow controlling unit comprises the flow controlling unit body in solid solid, flow controlling unit body interior and be positioned at lower floor and be provided with import oil circuit, flow controlling unit body interior and be positioned at upper strata and be provided with outlet oil circuit, the sidewall of flow controlling unit body and communicate with import oil circuit and be provided with oil inlet, the sidewall of flow controlling unit body and communicate with outlet oil circuit and be provided with oil outlet, flow controlling unit body is provided with two or more electromagnetic valve, the outlet of each electromagnetic valve communicates with outlet oil circuit, the import of each electromagnetic valve communicates with import oil circuit, also comprise the power steering pump with intergral reservoir be connected with described assist motor, power steering pump with intergral reservoir starts or stops work according to the mode of operation of assist motor.
2. electronlmobil hydraulic power-assist steering system according to claim 1, it is characterized in that, described power steering pump with intergral reservoir is connected with one end of deflector by turning to oil circuit, the other end of deflector is connected with steering handwheel, deflector, when the work of power steering pump startup, provides power steering by turning to oil circuit for steering handwheel.
3. electronlmobil hydraulic power-assist steering system according to claim 1 and 2, it is characterized in that, being also connected with between described driving switch and relay for gathering gear signal residing for driving switch and according to the entire car controller of the adhesive of gear signal control relay or disconnection.
4. electronlmobil hydraulic power-assist steering system according to claim 3, is characterized in that, described battery is lithium cell.
5. the electronlmobil hydraulic power-assist steering system according to claim 1 or 2 or 4, is characterized in that, described in turn to oil circuit to be connected between deflector and power steering pump with intergral reservoir by flexible pipe or hydraulic pipe.
6. electronlmobil hydraulic power-assist steering system according to claim 5, is characterized in that, described electromagnetic valve is normally closed ratio Solenoid ball valve.
7. the electronlmobil hydraulic power-assist steering system according to claim 1 or 2 or 4 or 6, is characterized in that, the quantity of described electromagnetic valve is 12, and it is arranged on described flow controlling unit body with the form of 3 × 4 arrays.
8. electronlmobil hydraulic power-assist steering system according to claim 7, is characterized in that, described assist motor is three-phase frequency alternating current dynamo surely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423451.6U CN204688199U (en) | 2015-06-18 | 2015-06-18 | A kind of electronlmobil hydraulic power-assist steering system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520423451.6U CN204688199U (en) | 2015-06-18 | 2015-06-18 | A kind of electronlmobil hydraulic power-assist steering system |
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| CN204688199U true CN204688199U (en) | 2015-10-07 |
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| CN201520423451.6U Expired - Fee Related CN204688199U (en) | 2015-06-18 | 2015-06-18 | A kind of electronlmobil hydraulic power-assist steering system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105172887A (en) * | 2015-10-30 | 2015-12-23 | 北京新能源汽车股份有限公司 | Electric hydraulic steering system and electric hydraulic steering method of electric vehicle |
| CN105216859A (en) * | 2015-10-21 | 2016-01-06 | 南京鼎尔特科技有限公司 | A kind of automatic control device of electronic hydraulic power-assisted steering system and control method thereof |
-
2015
- 2015-06-18 CN CN201520423451.6U patent/CN204688199U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105216859A (en) * | 2015-10-21 | 2016-01-06 | 南京鼎尔特科技有限公司 | A kind of automatic control device of electronic hydraulic power-assisted steering system and control method thereof |
| CN105216859B (en) * | 2015-10-21 | 2018-03-16 | 南京鼎尔特科技有限公司 | The automaton and its control method of a kind of electronic hydraulic power-assisted steering system |
| CN105172887A (en) * | 2015-10-30 | 2015-12-23 | 北京新能源汽车股份有限公司 | Electric hydraulic steering system and electric hydraulic steering method of electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160618 |
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| CF01 | Termination of patent right due to non-payment of annual fee |