CN102424069B - Double electronic valve device - Google Patents
Double electronic valve device Download PDFInfo
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- CN102424069B CN102424069B CN 201110367078 CN201110367078A CN102424069B CN 102424069 B CN102424069 B CN 102424069B CN 201110367078 CN201110367078 CN 201110367078 CN 201110367078 A CN201110367078 A CN 201110367078A CN 102424069 B CN102424069 B CN 102424069B
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Abstract
The invention relates to a double electromagnetic valve device. The double electromagnetic valve device comprises a valve body (1), a valve shell (2) and a valve cover (3), wherein the valve shell (2) is internally provided with two groups of coils (4), armatures (5) and armature pushers (10), each armature pusher (10) is provided with a return spring (9), the valve body (1) is provided with a pressure oil inlet passage (13) and an oil return passage (15), the two oil passages are respectively communicated with the oil inlet line and the oil outlet line of a rotary valve of an automobile power steering gear to form a bypass oil line which can release partial pressure oil, and combination control is carried out on opening and closing states of two electromagnetic valves in the double electromagnetic valve device to realize flow control on the bypass oil line. The double electromagnetic valve device provided by the invention can output multiple hand power characteristic curves, an automobile can have obvious steering handfeel at high speed; meanwhile, the problem of portability during high-speed emergent steering can be solved, and vehicle control stability and safety can be improved.
Description
Technical field
The present invention relates to a kind of Double electronic valve device, especially relate to and a kind ofly can change the automatically controlled bypass Double electronic valve device that enters fluid flow in automobile power steering.
Background technology
Along with growth in the living standard, road-holding property, the safety of people during to Vehicle Driving Cycle had higher requirement.For automobile power steering system, the road-holding property when both requiring high speed, the ease of steering in the time of must possessing low speed again, at present, widespread use be hydraulic power-assist steering system, when automobile low speed, as the steering dish, portability is preferably arranged, when the speed of a motor vehicle faster the time, just can produce larger power-assisted, make steering wheel operating too light, easily lose road feel, produce the problem of automobile " unstable ", reduced the safety performance of running at high speed.Otherwise, as satisfy high-speed handing stability, the ease of steering when can not meet low speed.
Because the conventional hydraulic servo steering system only has fixing hand force property, can't effectively solve the contradiction that turns to " gently " and " spirit ", and the problem that mutually restricts of steering effort and road feel, so people propose Electro-Hydraulic Power Steering System and control the flow that enters deflector, good feel when satisfying low speed portability and high speed.Typical solution has: Chinese patent ZL00210849.6, name is called " two characteristic rotary valve for powered steering of vehicle ", this patent arranges by-pass prot between high low speed valve port, by single solenoid control bypass circulation, during low speed, shut electromagnetic valve to satisfy light requirement, is opened electromagnetic valve recirculating oil quantity is increased during high speed, reduce steering hydraulic power, but this scheme only adopts single electromagnetic valve, can not export simultaneously multiple hand force property curve, can not adapt to the requirement of the multistage variation of power steering.Chinese patent 201020646637.5, name is called " automobile-used Electro-Hydraulic Power Steering System ", proposed to utilize a plurality of independent electromagnetic valves to open and close combination to obtain the steering swivel system scheme of good assist characteristic, but scheme simply connects a plurality of independent electromagnetic valves by pipeline, complex structure, take up room, installation difficulty is large, poor practicability.Chinese patent 200820237155.9, name is called the restriction size that has adopted electromagnetic proportional valve to regulate bypass disc in " a kind of electrohydraulic power steering pump ", lose the problem of road feel in the time of automobile high-speed can be solved to a certain extent turning to, but this scheme is had relatively high expectations to the accuracy of manufacture of electromagnetic proportional valve itself, spool often bears in actual use incessantly high pressure and unsettled phenomenon occurs opening, is difficult to control.Above-mentioned these scheme ubiquity complex structures, cost of product is higher, and wayward grade is not enough, is difficult to obtain the good power-assisted feel of chaufeur needs.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can export many assist characteristic curves, power-assisted better effects if, and compact conformation, control simple, the automatically controlled bypass Double electronic valve device of lower-cost power steering.
To achieve these goals, its technical scheme of the present invention is: Double electronic valve device, comprise valve body, valve casing and valve gap, two groups of coils, armature and armature lifters are installed in valve casing, retracing spring is installed on armature lifter, described valve body is provided with fluid oil input channel and back oil road, two oil ducts link with the advancing of steering rotary valve, oil return line respectively, form bleed off circuit, by controlling the different opening and closing combinations of states of two electromagnetic valves in Double electronic valve device, realize the control to the bleed off circuit flow.
Described bypass Double electronic valve device comprises valve body, valve casing, valve gap, and described valve body, valve casing, valve gap are bolted and are assembled into one.
Described valve body, to have two diameters on the end face that connects identical matching with valve casing, and the counterbore chamber of position symmetry, and offer the hole of two different-diameters in two vestibule central authorities, two holes link by subordinate's oil circuit in valve casing, link by another inner upper oil circuit in the middle part of two counterbores, the up and down oil circuit is parallel to each other; Have two counterbores that diameter is identical on the side perpendicular with connecting end face, be drilled with two diameters in this counterbore central authorities identical, be parallel to each other but not at the oil circuit of same level position, oil circuit and the vertical UNICOM of upper oil circuit wherein, and the oil inlet passage of formation bypass fluid, right side oil circuit and the vertical UNICOM of lower oil circuit, and form drainback passage.
Described valve casing inside comprises two groups of coils and armature and other annex, and coil inside is placed armature, and coil is on coil rack, the inner armature of placing of skeleton is equipped with copper sleeve, sleeve one end flange between coil rack and armature, after coil electricity, armature can move axially in copper sleeve; Armature top is protruding truncated cone-shaped, the armature other end is by the thread connection armature lifter, taper shape is made on the push rod top, for the opening and closing aperture, push rod spring and trip ring empty set are on push rod, the back-up ring reaction plate is fixed on valve body together by the flange of bolt with back-up ring and sleeve, and spring is compressive state in push rod.
Be processed with six long through-holes that are arranged symmetrically with in described valve casing, be used for laying six overbolts.
Described valve gap middle part symmetry processes two round boss, two boss are positioned in two copper sleeves, with the sleeve transition fit, the boss external cylindrical surface has two seal grooves, be used for laying seal ring, raised head face is processed as recessed taper shape, and is corresponding with the protruding truncated cone-shaped of armature top face, is used for the location of taking a seat of armature.
Be processed with six through holes that are arranged symmetrically with in described valve gap, be used for laying six overbolts.
Left oil circuit in described valve body side and the oil input channel of power steering rotary valve link, and the back oil road of right oil circuit and power steering rotary valve links.
Described automatically controlled bypass Double electronic valve device is controlled the independent unlatching of two electromagnetic valves in Double electronic valve device with closed by controller according to the speed of a motor vehicle, dtc signal.
Described coil inner sleeve is copper, in case principal vertical line circle temperature distortion and affect moving axially of armature.
Be processed with six tapped bore that are arranged symmetrically with in described valve body, six overbolts are by valve casing, and through hole corresponding in valve gap connects valve casing, valve gap, and they are fastened on valve body.
Described valve body is upper is processed with two through holes with lateral vertical, by bolt, whole device and deflector is fixedly connected.
The invention has the beneficial effects as follows: after adopting said structure, controller is divided into four reasonable sections with the speed of a motor vehicle, by obtaining vehicle speed signal, after via controller is judged the residing speed section of the speed of a motor vehicle, control the electromagnetic valve opening and closing in Double electronic valve device, can realize four kinds of different bypass flow patterns, the fixedly hand force property of rotary valve is become many controlled characteristic curves.When the low speed section, in Double electronic valve device, two electromagnetic valves are closed simultaneously, hand force property as shown in figure 16, rate of curve is larger, this moment feel light; When middle low speed section, in device, the electromagnetic valve of corresponding less latus rectum is opened after energising, and the fraction flow flows away from this passage; When the high speed section, in device, the electromagnetic valve of corresponding larger latus rectum is opened after energising, flows away from this passage than various flow; When high-velocity section, the dual-coil electromagnetic valve standard-sized sheet, two passage flows capable of bypass are maximum, and the hand force property curve is " U " shape, and it is sedate to turn to, and has improved the road-holding property of automobile.In addition, as under the high speed steering operating mode, controller cuts off rapidly two solenoid valve according to the signal of vehicle speed signal and deflection angle speed, significantly improves the power-assisted effect, realizes the emergency turn safe, improves safety.
The present invention is integral two electromagnetic valve unitized design, is provided with unified oil inlet passage and drainback passage on valve body, and novel structure is rationally compact, takes up room little, and is easy to control, can improve the vehicle performance performance, has adapted to the requirement of automobile energy-saving, environmental protection.
The present invention can be by changing the latus rectum of cutoff port on valve body, is complementary with the power steering of different model, and the hand force property curve that output and the type deflector are complementary, commonality is stronger.
Description of drawings
Fig. 1 is Double electronic valve device structure cutaway view of the present invention.
Fig. 2 is the valve body front view of Double electronic valve device of the present invention.
Fig. 3 is the valve A-A cutaway view of Double electronic valve device of the present invention.
Fig. 4 is the valve body birds-eye view of Double electronic valve device of the present invention.
Fig. 5 is the valve B-B cutaway view of Double electronic valve device of the present invention.
Fig. 6 is the valve casing birds-eye view of Double electronic valve device of the present invention.
Fig. 7 is the valve casing K-K cutaway view of Double electronic valve device of the present invention.
Fig. 8 is the valve gap front view of Double electronic valve device of the present invention.
Fig. 9 is the valve gap N-N cutaway view of Double electronic valve device of the present invention.
Figure 10 is the armature lifter front view in Double electronic valve device of the present invention.
Figure 11 is the armature front view in Double electronic valve device of the present invention.
Figure 12 is the sleeve cutaway view in Double electronic valve device of the present invention.
Figure 13 is the back-up ring reaction plate view in Double electronic valve device of the present invention.
Figure 14 is the back-up ring cutaway view in Double electronic valve device of the present invention.
Figure 15 is many characteristic hand force property diagram of curves that the present invention exports.
The specific embodiment
The present invention is further detailed explanation below in conjunction with accompanying drawing:
as shown in Figure 1, Double electronic valve device is integral two electromagnetic valve unitized design, comprise valve body (1), valve casing (2), valve gap (3), coil (4), armature (5), armature lifter (10) and other annex, with six overbolts with valve body (1), valve casing (2), valve gap (3) is fixedly connected and is integral, and further Double electronic valve device is fixed by bolts on the power steering front end cover by the hole in Fig. 2 (19), and make oil-feed on the Double electronic valve device valve body, drainback passage links with oil inlet passage and the drainback passage of power steering rotary valve respectively.
As extremely shown in Figure 5 in Fig. 2, valve body (1) with the joining end face C of valve casing face on to have two diameters identical, and the counterbore chamber E of position symmetry and counterbore chamber F, and be drilled with oilhole (12) and the oilhole (14) of two different-diameters in two counterbore chamber central authorities, oilhole (12) and oilhole (14) link by oil circuit under valve inner (15), link by oil circuit (13) in the middle part of chamber E and chamber F; With the perpendicular side D of end face C on have two counterbore G and counterbore H that diameter is identical, be drilled with oil circuit (16) and the oil circuit (17) of two same diameter in two counterbore central authorities, two oil circuits are parallel to each other but not in the same level position; At valve inner, upper oil circuit (13) is parallel with lower oil circuit (15), upper oil circuit (13) and vertical the linking of left oil circuit (16), lower oil circuit (15) and vertical the linking of right oil circuit (17).
In such scheme, on end face C, offer respectively two circular ring slots around counterbore chamber E and counterbore chamber F, be used for laying seal ring (8).
In such scheme, bypass fluid enters hole G in valve body (1) by the oil circuit that links with deflector rotary valve oil inlet passage, and is flowed in oil circuit (13) by oil circuit (16), thereby arrives counterbore chamber E and counterbore chamber F.
As extremely shown in Figure 7 in Fig. 6, valve casing (2) inside comprises two groups of coils (4), armature (5), armature lifter (10) and other annex, coil (4) is on coil rack, the inner armature (5) of placing of skeleton, copper sleeve (11) is installed between coil rack and armature (5), after coil electricity, armature can move axially in copper sleeve (11), copper sleeve (11) one end flange.Armature (5) top is protruding truncated cone-shaped, the armature other end is by thread connection armature lifter (10), push rod (10) one ends coning, be used for opening and closing oilhole (12) and oilhole (14), retracing spring (9) and trip ring (7) empty set are in push rod (10), back-up ring reaction plate (6) is fixed on valve body (1) by flange and the back-up ring (7) of four bolts with sleeve (11), and spring is compressive state in push rod.
In such scheme, the bush material in the middle of coil and armature adopts copper, after preventing the magnet coil energising, and coil rack expanded by heating and affect the movement of armature.
As extremely shown in Figure 9 in Fig. 8, valve gap (3) middle part is symmetrily processed with two round boss, and two boss are placed in two copper sleeves (11), and raised head face is processed as recessed conical hole, corresponding with the taper of armature (5) top end face dome, be used for the location of taking a seat after armature is subject to magnet coil suction.
In such scheme, the upper round boss of valve gap (3) and sleeve (11) adopt transition fit, and the round boss external cylindrical surface has two circular grooves, is used for laying seal ring (18).
In such scheme, the controller of Double electronic valve device is controlled single independent unlatching, contract fully or the standard-sized sheet of inner two electromagnetic valves of Double electronic valve device according to the speed of a motor vehicle, dtc signal, realize the control to the bleed off circuit flow.
The below further illustrates the relation of automatically controlled bypass Double electronic valve device working process and each several part take each operating mode of running car as example:
After start the engine, power steering system work, steering hydraulic oil one tunnel enters steering control valve, and one the tunnel enters the interior hole G of valve body in Double electronic valve device (1) as bypass fluid, and flowed in oil circuit (13) by oil circuit (16), thereby arrive counterbore chamber E and counterbore chamber F.Fluid will enter into sleeve (11) inside by back-up ring (7) by chamber E and chamber F, and due to the sealing function of seal ring (8) and seal ring (18), armature (5) is immersed in fluid.Due to this moment the speed of a motor vehicle very low, two magnet coils are in off-position, armature lifter (10) is closed two holes (12) and (14) under the thrust of retracing spring (9), whole bleed off circuit does not have oil mass to pass through.
Automobile is during with middle low speed driving, controller is according to vehicle speed signal, connection is corresponding to the magnet coil energising of little passing hole (12), produce electromagnetic attraction after coil electricity, and overcome the thrust of retracing spring (9), to move after armature (5), and be seated in recessed conical hole, valve gap round boss top, armature lifter (10) moves after following armature (5), thus open hole (12), at this moment, fluid flows into lower oil circuit (15), and by oil circuit (17), hole H is back in drainback passage in deflector, and the bypass oil mass is determined by the latus rectum of hole (12).
With similar with upper low speed, when automobile travels with high speed, large passing hole (14) will be opened, and the bypass oil mass is determined by the latus rectum of hole (14).
Automobile is when running at high speed, and controller powers for two magnet coils simultaneously, and open simultaneously hole (12) and hole (14), the bypass maximum flow.
When occuring to turn to greatly fast when automobile high-speed chance emergency situation, controller can cut off rapidly two solenoid valve according to vehicle speed signal and angular signal, and bleed off circuit is closed, and can significantly improve power-assisted this moment, realize the emergency turn safe, thereby improve the vehicle high-speed safety.
A kind of automatically controlled bypass Double electronic valve device provided by the invention can also be used as other executive device that need to change the oil circuit flow.
Claims (3)
1. a Double electronic valve device, comprise valve body (1), valve casing (2), and valve gap (3) is characterized in that:
Described valve casing (2) inside is equipped with two groups of coils (4), armature (5), armature lifter (10) and other annex, the upper retracing spring (9) of installing of armature lifter (10); Described valve body (1), valve casing (2), valve gap (3) is bolted and is assembled into one;
To have two diameters on the end face C that connects identical matching with valve casing for described valve body (1), and the position symmetry counterbore chamber E and counterbore chamber F, and be drilled with the first oilhole (12) and second oilhole (14) of two different-diameters in the central authorities of counterbore chamber E and counterbore chamber F, the first oilhole (12) and the second oilhole (14) link by valve inner the second oil circuit (15), link by the first oil circuit (13) in the middle part of chamber E and chamber F; With the perpendicular side D of end face C on have two counterbore G and counterbore H that diameter is identical, be drilled with the 3rd oil circuit (16) and the 4th oil circuit (17) of two same diameter in the central authorities of counterbore G and counterbore H, the 3rd oil circuit (16) and the 4th oil circuit (17) are parallel to each other but not in the same level position; At valve inner, the first oil circuit (13) is parallel with the second oil circuit (15), the first oil circuit (13) and the vertical UNICOM of the 3rd oil circuit (16), the oil inlet passage of formation bypass fluid, the second oil circuit (15) and the vertical UNICOM of the 4th oil circuit (17) form drainback passage;
Described coil (4) is on coil rack, and the inner armature (5) of placing of coil rack is equipped with copper sleeve (11) between coil rack and armature (5), and after coil electricity, armature moves axially in copper sleeve; Armature (5) top is protruding truncated cone-shaped, the armature other end is by thread connection armature lifter (10), armature lifter (10) top coning, be used for the opening and closing oilhole, retracing spring (9) and trip ring (7) empty set are in armature lifter (10), trip ring reaction plate (6) is fixed on valve body (1) together by flange and the trip ring (7) of bolt with copper sleeve (11), and spring is compressive state in armature lifter;
Described valve gap (3) middle part is symmetrily processed with two round boss, two boss are placed in two copper sleeves (11), and adopt transition fit with copper sleeve (11), the round boss external cylindrical surface has two circular grooves, raised head face is processed as recessed round platform and cheats shape, corresponding with the protruding truncated cone-shaped of armature (5) top end face, for the location of taking a seat of armature.
2. a kind of Double electronic valve device according to claim 1, it is characterized in that: described the 3rd oil circuit (16) is connected with the oil input channel that enters the power steering rotary valve, and the 4th oil circuit (17) is connected with the back oil road of power steering rotary valve.
3. a kind of Double electronic valve device according to claim 1 and 2 is characterized in that: also comprise a kind of controller, described controller is controlled respectively in Double electronic valve device the independent of two electromagnetic valves according to the speed of a motor vehicle, two signals of torque and is opened with closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110367078 CN102424069B (en) | 2011-11-18 | 2011-11-18 | Double electronic valve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110367078 CN102424069B (en) | 2011-11-18 | 2011-11-18 | Double electronic valve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102424069A CN102424069A (en) | 2012-04-25 |
| CN102424069B true CN102424069B (en) | 2013-06-12 |
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ID=45958133
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110367078 Expired - Fee Related CN102424069B (en) | 2011-11-18 | 2011-11-18 | Double electronic valve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102424069B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000038148A (en) * | 1998-07-24 | 2000-02-08 | Toyota Autom Loom Works Ltd | Vehicular solenoid valve, hydraulic power steering device and vehicle |
| CN1990323A (en) * | 2005-12-29 | 2007-07-04 | 许倍强 | Hydraulic power-assisted steering system and direction dogging method |
| US7765915B2 (en) * | 2006-09-20 | 2010-08-03 | Gm Global Technology Operations, Inc. | Vehicular hydraulic system with dual relief valve |
| CN100463828C (en) * | 2007-02-14 | 2009-02-25 | 上汽依维柯红岩商用车有限公司 | Rotary valve assembly limited by double-pin |
| CN101571207B (en) * | 2009-06-15 | 2010-12-01 | 哈尔滨工程大学 | Redundant dual-coil electromagnetic valve |
-
2011
- 2011-11-18 CN CN 201110367078 patent/CN102424069B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102424069A (en) | 2012-04-25 |
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Granted publication date: 20130612 Termination date: 20141118 |
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