CN202252263U - Proportional solenoid valve of electrically controlled high-pressure common-rail fuel injection system of diesel engine - Google Patents
Proportional solenoid valve of electrically controlled high-pressure common-rail fuel injection system of diesel engine Download PDFInfo
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- CN202252263U CN202252263U CN2011204029509U CN201120402950U CN202252263U CN 202252263 U CN202252263 U CN 202252263U CN 2011204029509 U CN2011204029509 U CN 2011204029509U CN 201120402950 U CN201120402950 U CN 201120402950U CN 202252263 U CN202252263 U CN 202252263U
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Abstract
The utility model relates to a proportional solenoid valve of an electrically controlled high-pressure common-rail fuel injection system of a diesel engine, relating to a solenoid valve. The attraction part of a fixed iron core (8) and a movable iron core (3) of the solenoid valve adopts a tapered pole face, and the solenoid valve is formed via assembly of the fixed iron core (8), the movable iron core (3), a guide pipe (18), a spiral spring (15), an electromagnetic coil (4), square iron core (19), a shell (14) and a valve body (1). When drive current is input into the electromagnetic coil and passes through a magnetic circuit in the valve, a magnetic field can be produced, electromagnetic force proportional to the drive current but irrelevant to the stroke can be produced for the movable iron core, so that the movable iron core can move against force of the spring and stops moving at the balance point of two kinds of forces to be maintained at a stable location. The movable iron core can move proportionally and continuously according to the drive current to control the opening of the valve. When the solenoid valve is used under complex conditions in operation of the diesel engine, the switching of a fuel channel can be controlled stably, and the flow in the fuel channel can be controlled accurately and proportionally according to the drive current.
Description
Technical field
The utility model relates to a kind of proportional electromagnetic valve, specifically, is that a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve.
Background technique
DENG Electrocontrolled high-pressure common rail injection system is a kind of injection system of novel concept; This system can not only significantly improve efficient and reduce oil consumption; Can also alleviate the blowdown of diesel engine greatly, energy-conservation and environmental protection are had great significance, be the direction of diesel fuel system development.
Oil circuit flow control in the high-pressure common rail injection system is the critical component of system with solenoid valve; Must have the proportional control function by this solenoid valve of system requirements; Promptly can be according to the continuous variation of driving current size, control the fuel feed amount pro rata, be called DENG high-pressure common rail injection system and use proportional electromagnetic valve.
General oil circuit control can only be carried out the on-off type operation with solenoid valve; Can not realize function according to the ground control flow rate that is in proportion of driving current; The proportional electromagnetic valve of some other types such as electronic proportional electromagnetic valve, pneumatic proportional solenoid valve etc.; Though can realize proportional control; But be not suitable in the Common Rail Injection System of Diesel Engine, because it is have many influence factors such as vibration is violent, range of temperature big, it is big to impact, work under bad environment in the Common Rail Injection System of Diesel Engine working procedure, therefore strict to performance requirements such as the reliability of used proportional electromagnetic valve, control accuracy, sealings; Used proportional electromagnetic valve should be realized flow proportional control reliably, satisfies the performance requirement of vehicle-mounted solenoid valve again fully.
Because of performance requirement is strict, with high content of technology, design difficulty is big, the dispersed reason such as big of home made materials; Common Rail Injection System of Diesel Engine does not still have homemade goods at present with proportional electromagnetic valve; Main dependence on import, but imported product expensive are badly in need of production domesticization to reduce cost.On the other hand; Development and maturation along with China's Common Rail Injection System of Diesel Engine proprietary technology; The homemade proportional electromagnetic valve of also being badly in need of matching with it, be based on the native country technology of various models is with technological progress and the practical needs of popularizing that satisfy China's high-pressure common rail injection system.
Summary of the invention
The utility model technical problem to be solved is; A kind of proportional electromagnetic valve that satisfies the Common Rail Injection System of Diesel Engine usage requirement is provided, and this proportional electromagnetic valve has that reliability height, high conformity, flow stagnate that ring is little, simple in structure, convenient processing and manufacture and characteristics with low cost.
For solving the problems of the technologies described above, the utility model is realized through following technological scheme:
A kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve; Comprise secured core, moving iron core, adjusting screw, helical spring, limited ring, conduit, pad, electromagnetic coil, shell, square iron core, valve body; Its columniform secured core and moving iron core adhesive place are the taper pole-face, and the two and shell, square iron core constitute magnetic structure; Helical spring is packed in the secured core through hole; A limited ring is equipped with in secured core through hole bottom, and the helical spring the other end contacts installation through this limited ring hollow region with moving iron core; A conduit is welded in the secured core bottom, and the two and limited ring are formed the secured core weld assembly jointly; Cylindrical moving iron core is packed in the conduit of secured core weld assembly; The moving iron core top center has circular groove, and groove is installed helical spring; The groove central position has pod apertures inlet, has pod apertures outlet on the sidewall of moving iron core middle part, the pod apertures inlet be connected by through hole between pod apertures exports, this through hole is positioned at moving iron core inside; Circumferentially have two grooves on the moving iron core sidewall circumference, two grooves are positioned at pod apertures outlet both sides, and a wear ring is installed in each groove; Axially have two guiding gutters on the moving iron core sidewall; One of them guiding gutter is through the pod apertures exit position; Another guiding gutter position and last guiding gutter axisymmetric, guiding gutter width are greater than the pod apertures outlet diameter, and the guiding gutter degree of depth is greater than the aforementioned circumferential grooves degree of depth; The moving iron core underpart has chamfering; A blind hole is opened at center, moving iron core underpart, is fit into an elastomer diaphragm, and the two forms the moving iron core assembly jointly.
Described a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve, and its electromagnetic coil is through the coiling on cylindric coil former of copper core enameled cable, and two Outlets of copper cash link to each other with outside two contact pins of coil former on coil former top; Behind the coil winding periphery is carried out plastic packaging, is rectangular-shaped coil injection moulding assembly that there is longitudinal hole at the middle part, insert the secured core weld assembly; Coil injection moulding assembly has vertical screw installation through holes for four jiaos, and contact pin curved section lower end is equipped with a cushion block, and contact pin curved section and cushion block all are fixed moulding in coil injection moulding component internal, and once injection moulding forms outlet structure around the contact pin exposed portions serve; Contact pin injection moulding socket has slideway, draw-in groove structure.
Described a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve, and its adjusting screw middle part is furnished with O type rubber seal, and the adjusting screw top has " one " font or " ten " font or " bifurcation " font or interior hexagonal groove.
Described a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve, and its shell is three unenclosed constructions, becomes " door " font structure by metallic plate punching, three comprise two sides on top a slice and the Vertical direction two; The cover top portion center has circular hole, inserts the secured core weld assembly, and cover top portion has vertical screw installation for four jiaos and uses through hole; Flange is processed in two bottoms of shell side, is connected with square iron core, and square iron core is a square tabular component; The center has circular hole, inserts the secured core weld assembly, and four jiaos have vertical screw installation and use through hole; Two ends being connected with shell have gap; The flange that the shell side is two inserts and connects, and forms " mouth " font structure with shell, and coil injection moulding assembly is installed in wherein.
Described a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve; Behind the outside installation of its secured core weld assembly one ring pad; Insert in the through hole at square iron core, coil injection moulding assembly and shell middle part, the ring pad is finally between the epitaxial planar top, conduit lower end of square iron core and secured core weld assembly.
Described a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve, and its valve body is square member, and its top has circular groove, and the bottom is a round boss; Valve body has longitudinal hole for four jiaos, and wherein two diagonal position through holes are threaded, and two other diagonal position through hole is a unthreaded hole.
Described a kind of DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve; Its valve body central upper portion partly is a two-stage circular groove structure up and down; At the lower recess center is a nozzle-like oil outlet, is valve body inlet through hole outlet end, and the moving iron core elastomer diaphragm partly is pressed on this oil outlet; The other valve outlet through hole entry end that has of oil outlet on the lower recess bottom surface; One annular boss is arranged between lower recess and upper grooves, place seal ring between annular boss and upper grooves outer wall, the epitaxial planar bottom, conduit lower end of secured core weld assembly is pressed on the sealing circle; The valve body lower portion core is the round boss structure; Have valve body inlet through hole entry end and valve outlet through hole outlet end on the boss bottom end face; Through being positioned at the valve body inlet through hole and the valve outlet through hole of valve body lower end inside, angle tilt; Respectively with valve body upper grooves bottom surface on valve body inlet through hole outlet end, valve outlet through hole entry end link to each other, and all have circular groove at valve body inlet through hole entry end and valve outlet through hole outlet end port, the placement seal ring.
The utility model:
1) the taper pole-face of employing optimal design increases the proportional control scope of moving iron core, and control accuracy improves; 2) adopt two friction ring structures, guarantee that the stable of moving iron core moves and good concentricity, the ring influence reduces to stagnate; 3) adopt special valve body and dedicated pins structure, prevent vibration and impact, the assurance valve is with system stability, be connected reliably; 4) adopt whole slim injection moulding; 5) optimized integral structure design, optimal material selection.Concrete scheme is: columniform secured core of solenoid valve and adhesive place of columniform moving iron core are designed to special taper pole-face; Again with other parts; Comprise adjusting screw, conduit, limited ring, helical spring, pad, electromagnetic coil, shell, square iron core, valve body, mutual group is dressed up and is proportional electromagnetic valve.Assembling mode is: square iron core is connected to form " mouth " font structure with " door " font structural housing, and coil injection moulding assembly is put into wherein, and makes three's central through bore alignment; The secured core center has longitudinal hole; The adjusting screw of being furnished with seal ring is put on through hole top through screw thread; The boss of adjusting screw bottom inserts a helical spring end, and in promptly helical spring was packed the secured core through hole into, limited ring was equipped with in secured core through hole bottom; Secured core lower outside welding conduit, secured core, conduit and limited ring are formed the secured core weld assembly jointly; Behind the outside installation of the secured core weld assembly one ring pad, insert in the through hole at square iron core, coil injection moulding assembly and shell middle part, the ring pad is finally between the epitaxial planar top, conduit lower end of square iron core and secured core weld assembly; Two wear rings are installed in the respective groove of moving iron core sidewall, are fit into moving iron core in the conduit, the helical spring the other end inserts moving iron core upper circular groove through the limited ring hollow region; Connect valve body at last; Ring pad and conduit lower end epitaxial planar are inserted in the circular groove on valve body top; Epitaxial planar bottom, conduit lower end is pressed on the seal ring in the valve body upper circular groove; Moving iron core bottom elastomer diaphragm is pressed on the valve body inlet through hole outlet end at valve body upper circular groove center, uses two cover screws, packing ring valve body and the fastening one that is installed as of other parts.Secured core, moving iron core, square iron core, shell are processed by the magnetic conductive metal material, and other are processed by nonmagnetic substance.Because special magnetic structure, when driving current input electromagnetic coil, the solenoid valve internal magnetic field produces size steady electromagnetic force proportional with driving current, that have nothing to do basically with stroke to moving iron core; Making it overcome spring force is moved; Moving iron core stops to move on the equinoctial point of electromagnetic force and spring force, and moving iron core is remained on the stable position, even solenoid valve has a stable aperture; Like this; Under electromagnetic force and spring force acting in conjunction, moving iron core can be by being in proportion of driving current, continuous motion in magnetic field, thus the aperture of control valve body stream; The break-make of control oil channel stably not only can also be according to the controlling and driving electric current flow of control oil channel pro rata exactly.
Compared with prior art, the utility model Common Rail Injection System of Diesel Engine is used proportional electromagnetic valve
Beneficial effect be:
(1) under the complex working condition and rugged environment of the utility model proportional electromagnetic valve when Common Rail Injection System of Diesel Engine is worked; The break-make of control oil channel stably not only; Can also satisfy the Common Rail Injection System of Diesel Engine usage requirement fully according to the driving current flow of control oil channel pro rata exactly.
(2) the proportional electromagnetic force of utilization of the utility model proportional electromagnetic valve and driving current directly drives moving iron core and carries out work, and the aperture of control valve makes the simple in structure and practical of product, and is easy to manufacturing.
(3) the utility model proportional electromagnetic valve is designed with the working pressure adjusting screw, can regulate different working pressure as requested, satisfies the pressure parameter requirement of different Common Rail Injection System of Diesel Engine.
(4) the utility model proportional electromagnetic valve moving iron core has unique pod apertures, water conservancy diversion trench design, can reduce fluid resistance, and reduce the iron core quality, the dynamic responding speed when improving proportional electromagnetic valve work greatly.
(5) on the utility model proportional electromagnetic valve moving iron core sidewall around the wear ring of two high wear resistances, low coefficient of friction; Linarity and stability in the time of can keeping iron core in conduit, to move; Have stability of motions and keep function, can improve the accuracy of proportional electromagnetic valve flow control greatly, simultaneously; Can also prevent when moving iron core from moving and the rubbing contact between conduit, avoid producing
Metallic dust, the fuel oil of valve is not contaminated thereby assurance is flowed through.
(6) the utility model proportional electromagnetic valve moving iron core lower end circumferential edges has big chamfering structure, and this chamfering ramp structure can reduce fluid resistance suffered in the moving iron core movement process,
And make because of the mobile power that affacts on the moving iron core of fluid is evenly distributed rationally, to moving iron core
Equilibratory axisymmetric power and useful radial force guarantee straightness accuracy and coaxality when moving iron core moves in conduit, improve the accuracy of proportional electromagnetic valve flow control.
(7) the utility model proportional electromagnetic valve electromagnetic coil assembly has partly carried out integral molded plastic; Can make the coil block part-structure firm; Reduce the rate of fault of coil block part, and can improve coil block part heat dispersion greatly, guaranteed the temperature requirement of valve; Can realize the requirement of 120 ℃ of anti-ambient temperatures, and be convenient to assembling.
(8) the contact pin injection moulding socket of the utility model proportional electromagnetic valve electromagnetic coil assembly part has slideway, draw-in groove structure, can conveniently be connected with external plug, and can guarantee to be connected firmly under the complex working condition when diesel engine is worked; In addition, the flame-retarded resin material is adopted in injection moulding, can improve the insulating property and the flame retardant property of connector assembly greatly.
(9) the utility model proportional electromagnetic valve valve body lower portion is designed to the round boss damascene structures; This structure is convenient to valve is installed on working position in the Common Rail Injection System of Diesel Engine; And can when diesel engine is worked, have and guarantee under the complex working condition of strong vibration, impact that proportional electromagnetic valve is connected with the stable of system oil-way; The accident that can effectively prevent to cause valve to come off owing to retaining screw is loosening and cause produces the reliability and the Security that have improved system.
(10) each parts joint of the utility model proportional electromagnetic valve stream adopts parts pressing O type rubber seal mode to seal, and overall tightness is good, and easy to assembly.
Description of drawings
Fig. 1 is the utility model proportional electromagnetic valve structure sectional view.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed description.
Among the embodiment shown in the drawings; Columniform secured core 8 is designed to taper pole-face as shown in the figure with moving iron core 3 adhesives place; Again with other parts; Comprise adjusting screw 9, conduit 18, limited ring 16, helical spring 15, pad 20, electromagnetic coil assembly 4, shell 14, square iron core 19, valve body 1, mutual group is dressed up and is proportional electromagnetic valve.
Columniform secured core of the utility model and adhesive place of columniform moving iron core are special taper pole-face; The two and shell, square iron core constitute special magnetic structure, and when driving current input electromagnetic coil, the valve internal magnetic field produces size electromagnetic force proportional with driving current, that have nothing to do basically with stroke to moving iron core; Making it overcome spring force moves; And on two equilibrium of forces points, stop to move, realize that moving iron core can be by being in proportion of driving current, continuous motion, and then the aperture of control valve; The break-make of control oil channel stably not only, can also be continuously control oil channel flow pro rata.Secured core 8, moving iron core 3, square iron core 19, shell 14 are processed by the magnetic conductive metal material.Cylindrical secured core 8 centers have a longitudinal hole, and an adjusting screw 9 is equipped with through screw thread in through hole top, and the boss of adjusting screw bottom inserts an end of helical spring 15, and promptly helical spring is packed in the secured core through hole; A limited ring 16 is equipped with in secured core through hole bottom, and the helical spring the other end contacts installation through this limited ring hollow region with moving iron core 3; A conduit 18 is welded in the secured core bottom, and the two and limited ring are formed the secured core weld assembly jointly.Adjusting screw 9, limited ring 16, helical spring 15, conduit 18 are processed by nonmagnetic material.Adjusting screw 9 middle parts are furnished with O type rubber seal 10 and are used for sealing, and the adjusting screw top has " one " font or " ten " font or " bifurcation " font or interior hexagon or other shape groove and is used for regulating.Cylindrical moving iron core 3 is packed in the conduit 18 of secured core weld assembly; The moving iron core top center has circular groove, and groove is used to install helical spring; The groove central position has pod apertures inlet, has pod apertures outlet on the sidewall of moving iron core middle part, the pod apertures inlet be connected by through hole between pod apertures exports, this through hole is positioned at moving iron core inside; Circumferentially have two grooves on the moving iron core sidewall circumference, two grooves are positioned at pod apertures outlet both sides, and a wear ring 17 is installed in each groove; Axially have two guiding gutters on the moving iron core sidewall; One of them guiding gutter is through the pod apertures exit position; Another guiding gutter position and last guiding gutter axisymmetric, guiding gutter width are greater than the pod apertures outlet diameter, and the guiding gutter degree of depth is greater than the aforementioned circumferential grooves degree of depth; The moving iron core underpart has big chamfering; A blind hole is opened at center, moving iron core underpart, is fit into an elastomer diaphragm 2, and the two forms the moving iron core assembly jointly.Wear ring 17 is processed by engineering plastics, and the thickness of wear ring is greater than the degree of depth of moving iron core sidewall circumference groove.Elastomer diaphragm 2 is processed by rubber material, and the thickness of elastomer diaphragm is greater than the degree of depth of its moving iron core bottom blind hole of packing into.Electromagnetic coil 4 is formed by the coiling on cylindric coil former of copper core enameled cable, and two Outlets of copper cash link to each other with outside two contact pins 5 of coil former on coil former top; Coil winding is accomplished after periphery is carried out injection moulding, makes it become rectangular-shaped coil injection moulding assembly, and there is longitudinal hole at the middle part, is used to insert the secured core weld assembly; Coil injection moulding assembly has vertical screw installation for four jiaos and uses through hole.Coil former material and injection moulding are engineering plastics with material.Contact pin 5 is processed by nonmagnetic material; Contact pin curved section lower end is equipped with a cushion block 7; This cushion block is processed by engineering plastics; Contact pin curved section and cushion block all were fixed moulding in coil injection moulding component internal after the coil injection moulding was accomplished, and once injection moulding forms socket 6 structures around the contact pin exposed portions serve.Contact pin injection moulding socket 6 has slideway, draw-in groove structure, can conveniently be connected with external plug, and guarantee to be connected firmly.Shell 14 is three unenclosed constructions, is become " door " font structure and is obtained by metallic plate punching, three comprise two sides on top a slice and the Vertical direction two; The cover top portion center has circular hole, is used to insert the secured core weld assembly, and cover top portion has vertical screw installation for four jiaos and uses through hole; Flange is processed in two bottoms of shell side, is used for being connected with square iron core.Square iron core 19 is a square tabular component; The center has circular hole, is used to insert the secured core weld assembly, and four jiaos have vertical screw installation and use through hole; Two ends being connected with shell have gap; Can make the flange of two of shell sides insert connection, form " mouth " font structure with shell, coil injection moulding assembly is installed in wherein.Behind the outside installation of the secured core weld assembly one ring pad 20; Insert in the through hole at square iron core 19, coil injection moulding assembly and shell 14 middle parts, the ring pad is finally between the epitaxial planar top, conduit 18 lower end of square iron core and secured core weld assembly.Ring pad 20 is processed for engineering plastics.Valve body 1 is processed by nonmagnetic material, is square member, and its top has circular groove, and the bottom is a round boss; Valve body has longitudinal hole for four jiaos, and wherein two diagonal position through holes are threaded, and are used for the installation of each component of valve, and two other diagonal position through hole is a unthreaded hole, is used for valve in the locational installation of system works.Valve body 1 central upper portion partly is a two-stage circular groove structure up and down; At the lower recess center is a nozzle-like oil outlet; Be valve body inlet through hole outlet end; Moving iron core elastomer diaphragm 2 parts are pressed on this oil outlet, and oil outlet is other on the lower recess bottom surface has valve outlet through hole entry end, and an annular boss is arranged between lower recess and upper grooves; Place seal ring 21 between annular boss and upper grooves outer wall, the epitaxial planar bottom, conduit 18 lower end of secured core weld assembly is pressed on the sealing circle; The valve body lower portion core is the round boss structure; Have valve body inlet through hole entry end and valve outlet through hole outlet end on the boss bottom end face; Through being positioned at the valve body inlet through hole and the valve outlet through hole of valve body lower end inside, angle tilt; Respectively with valve body upper grooves bottom surface on valve body inlet through hole outlet end, valve outlet through hole entry end link to each other, and all have circular groove in enter the mouth through hole entry end and valve outlet through hole outlet end port of valve body, be used to place seal ring.After accomplishing, the assembling of proportional electromagnetic valve each several part uses two cover screws 11, pad 12,13; Be the tapped through hole that the diagonal angle distributes through two positions on square iron core 19, coil injection moulding assembly, shell 14 and the valve body 1; Each several part is fastened as one; Re-use two cover long spiro nail and packing rings; Be the screwing through hole that the diagonal angle distributes through two other position on square iron core, coil injection moulding assembly, shell and the valve body, proportional electromagnetic valve is installed on place, working position in the diesel engine electric control high pressure common rail injection system.
Concrete installation aspect: square iron core 19 is connected to form " mouth " font structure with " door " font structural housing 14, and coil injection moulding assembly 4 is put into wherein, and makes three's central through bore alignment; Secured core 8 centers have longitudinal hole; The adjusting screw 9 that has O type rubber seal 10 is put into through screw thread in through hole top, and the adjusting screw top has " one " word groove and is used for regulating, and the boss of adjusting screw bottom inserts an end of helical spring 15; Be that helical spring is packed in the secured core through hole; Limited ring 16 is equipped with in secured core through hole bottom, secured core lower outside welding conduit 18, and secured core, conduit and limited ring are formed the secured core weld assembly jointly; After a ring pad 20 is inserted in secured core weld assembly outside, insert in the through hole at square iron core, coil injection moulding assembly and shell middle part, the ring pad is finally between the epitaxial planar top, conduit lower end of square iron core and secured core weld assembly; Two wear rings 17 are enclosed within the respective groove of moving iron core 3 sidewalls, pack moving iron core in the conduit into, the helical spring the other end inserts moving iron core upper circular groove through the limited ring hollow region; Connect valve body 1 at last; Make ring pad and conduit lower end epitaxial planar insert the circular groove on valve body top; Epitaxial planar bottom, conduit lower end is pressed on the seal ring 21 in the valve body upper circular groove; Moving iron core bottom elastomer diaphragm 2 is pressed on the valve body inlet through hole outlet end at valve body upper circular groove center, uses two cover screws 11, packing ring 12,13 valve body and the fastening one that is installed as of other parts.When proportional electromagnetic valve is installed in the diesel engine electric control high pressure common rail injection system; Must, valve body place seal ring in entering the mouth the circular groove of through hole entry end and valve outlet through hole outlet end port; Re-use two cover long spiro nail and packing rings, proportional electromagnetic valve is installed on place, working position in the diesel engine electric control high pressure common rail injection system.
The material aspect: be based on cheapness and home made materials, wherein secured core, moving iron core, square iron core, shell are processed by the magnetic metal material; Limited ring, valve body become by copper; Adjusting screw, helical spring, conduit and fastening processed by nonmagnetic material with screw, packing ring; O type rubber seal that solenoid valve adopts and the elastomer diaphragm on the moving iron core are processed by rubber material; The pad that wear ring on the moving iron core and secured core weld assembly are inserted is processed by engineering plastic materials; Injection moulding electromagnetic coil assembly part, electromagnetic coil are copper core enameled cable, and cushion block under coil former and contact pin 5 curved sections 7 is processed by engineering plastic materials, and contact pin is made of copper, and socket 6 and coil injection moulding use material to be thermostability engineering plastic.
The control aspect: when driving current input electromagnetic coil, because special magnetic structure, the solenoid valve internal magnetic field produces size steady electromagnetic force proportional with driving current, that have nothing to do basically with stroke to moving iron core; Making it overcome spring force is moved; Moving iron core stops to move on the equinoctial point of electromagnetic force and spring force, and moving iron core is remained on the stable position, even solenoid valve has a stable aperture; Like this; Under electromagnetic force and spring force acting in conjunction, moving iron core can be by being in proportion of driving current, continuous motion in magnetic field, thus the aperture of control valve body stream; The break-make of control oil channel stably not only can also be according to the driving current flow of control oil channel pro rata exactly.
Claims (8)
1. a DENG Electrocontrolled high-pressure common rail injection system is used proportional electromagnetic valve; Comprise secured core, moving iron core, adjusting screw, helical spring, limited ring, conduit, pad, electromagnetic coil, shell, square iron core, valve body; It is characterized in that; Columniform secured core and moving iron core adhesive place are the taper pole-face, and the two and shell, square iron core constitute magnetic structure; Helical spring is packed in the secured core through hole; A limited ring (16) is equipped with in secured core through hole bottom, and the helical spring the other end contacts installation through this limited ring hollow region with moving iron core (3); A conduit (18) is welded in the secured core bottom, and the two and limited ring are formed the secured core weld assembly jointly; Cylindrical moving iron core (3) is packed in the conduit (18) of secured core weld assembly; The moving iron core top center has circular groove, and groove is installed helical spring; The groove central position has pod apertures inlet, has pod apertures outlet on the sidewall of moving iron core middle part, the pod apertures inlet be connected by through hole between pod apertures exports, this through hole is positioned at moving iron core inside; Circumferentially have two grooves on the moving iron core sidewall circumference, two grooves are positioned at pod apertures outlet both sides, and a wear ring (17) is installed in each groove; Axially have two guiding gutters on the moving iron core sidewall; One of them guiding gutter is through the pod apertures exit position; Another guiding gutter position and last guiding gutter axisymmetric, guiding gutter width are greater than the pod apertures outlet diameter, and the guiding gutter degree of depth is greater than the aforementioned circumferential grooves degree of depth; The moving iron core underpart has chamfering; A blind hole is opened at center, moving iron core underpart, is fit into an elastomer diaphragm (2), and the two forms the moving iron core assembly jointly.
2. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve; It is characterized in that; Electromagnetic coil (4) is through the coiling on cylindric coil former of copper core enameled cable, and two Outlets of copper cash link to each other with outside two contact pins of coil former (5) on coil former top; Behind the coil winding periphery is carried out plastic packaging, is rectangular-shaped coil injection moulding assembly that there is longitudinal hole at the middle part, insert the secured core weld assembly; Coil injection moulding assembly has vertical screw installation through holes for four jiaos; Contact pin curved section lower end is equipped with a cushion block (7); Contact pin curved section and cushion block all are fixed moulding in coil injection moulding component internal, and once injection moulding forms socket (6) structure around the contact pin exposed portions serve; Contact pin injection moulding socket (6) has slideway, draw-in groove structure.
3. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve; It is characterized in that; Adjusting screw (9) middle part is furnished with O type rubber seal (10), and the adjusting screw top has " one " font or " ten " font or " bifurcation " font or interior hexagonal groove.
4. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve; It is characterized in that; Shell (14) is three unenclosed constructions, becomes " door " font structure by metallic plate punching, three comprise two sides on top a slice and the Vertical direction two; The cover top portion center has circular hole, inserts the secured core weld assembly, and cover top portion has vertical screw installation for four jiaos and uses through hole; Flange is processed in two bottoms of shell side, is connected with square iron core, and square iron core (19) is a square tabular component; The center has circular hole, inserts the secured core weld assembly, and four jiaos have vertical screw installation and use through hole; Two ends being connected with shell have gap; The flange that the shell side is two inserts and connects, and forms " mouth " font structure with shell, and coil injection moulding assembly is installed in wherein.
5. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve; It is characterized in that; Behind the outside installation of the secured core weld assembly one ring pad (20); Insert in the through hole at square iron core (19), coil injection moulding assembly and shell (14) middle part, the ring pad finally is positioned between the epitaxial planar top, conduit (18) lower end of square iron core and secured core weld assembly.
6. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve, it is characterized in that valve body (1) is square member, and its top has circular groove, and the bottom is a round boss; Valve body has longitudinal hole for four jiaos, and wherein two diagonal position through holes are threaded, and two other diagonal position through hole is a unthreaded hole.
7. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve; It is characterized in that valve body (1) central upper portion partly is a two-stage circular groove structure up and down, is a nozzle-like oil outlet at the lower recess center; Be valve body inlet through hole outlet end; Moving iron core elastomer diaphragm (2) part is pressed on this oil outlet, and oil outlet is other on the lower recess bottom surface has valve outlet through hole entry end, and an annular boss is arranged between lower recess and upper grooves; Place seal ring (21) between annular boss and upper grooves outer wall, epitaxial planar bottom, the conduit of secured core weld assembly (18) lower end is pressed on the sealing circle; The valve body lower portion core is the round boss structure; Have valve body inlet through hole entry end and valve outlet through hole outlet end on the boss bottom end face; Through being positioned at the valve body inlet through hole and the valve outlet through hole of valve body lower end inside, angle tilt; Respectively with valve body upper grooves bottom surface on valve body inlet through hole outlet end, valve outlet through hole entry end link to each other, and all have circular groove at valve body inlet through hole entry end and valve outlet through hole outlet end port, the placement seal ring.
8. a kind of DENG Electrocontrolled high-pressure common rail injection system according to claim 1 is used proportional electromagnetic valve; It is characterized in that; Proportional electromagnetic valve assembling is after two cover screws (11), pad (12,13); Be the tapped through hole that the diagonal angle distributes through two positions on square iron core (19), coil injection moulding assembly, shell (14) and the valve body (1), each several part is fastened as one, again with two cover long spiro nail and packing rings; Be the screwing through hole that the diagonal angle distributes through two other position on square iron core, coil injection moulding assembly, shell and the valve body, proportional electromagnetic valve is installed on place, working position in the diesel engine electric control high pressure common rail injection system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204029509U CN202252263U (en) | 2011-10-21 | 2011-10-21 | Proportional solenoid valve of electrically controlled high-pressure common-rail fuel injection system of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204029509U CN202252263U (en) | 2011-10-21 | 2011-10-21 | Proportional solenoid valve of electrically controlled high-pressure common-rail fuel injection system of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202252263U true CN202252263U (en) | 2012-05-30 |
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ID=46113505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204029509U Withdrawn - After Issue CN202252263U (en) | 2011-10-21 | 2011-10-21 | Proportional solenoid valve of electrically controlled high-pressure common-rail fuel injection system of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202252263U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506217A (en) * | 2011-10-21 | 2012-06-20 | 沈阳化工大学 | Proportional electromagnetic valve for electrically controlled high-pressure common-rail fuel injection system of diesel engine |
| CN104575932A (en) * | 2013-10-23 | 2015-04-29 | 罗伯特·博世有限公司 | Electromagnet for valve of hydraulic system and valve having electromagnet |
| CN106678423A (en) * | 2017-03-04 | 2017-05-17 | 沈阳航天新光集团有限公司 | High-pressure electromagnetic starting device |
| CN109027222A (en) * | 2018-10-24 | 2018-12-18 | 扬州荣德新能源科技有限公司 | A kind of piston and the proportioning valve including it |
-
2011
- 2011-10-21 CN CN2011204029509U patent/CN202252263U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506217A (en) * | 2011-10-21 | 2012-06-20 | 沈阳化工大学 | Proportional electromagnetic valve for electrically controlled high-pressure common-rail fuel injection system of diesel engine |
| CN102506217B (en) * | 2011-10-21 | 2013-06-19 | 沈阳化工大学 | Proportional electromagnetic valve for electrically controlled high-pressure common-rail fuel injection system of diesel engine |
| CN104575932A (en) * | 2013-10-23 | 2015-04-29 | 罗伯特·博世有限公司 | Electromagnet for valve of hydraulic system and valve having electromagnet |
| CN104575932B (en) * | 2013-10-23 | 2019-02-19 | 罗伯特·博世有限公司 | The electromagnet of valve for hydraulic system and valve with electromagnet |
| CN106678423A (en) * | 2017-03-04 | 2017-05-17 | 沈阳航天新光集团有限公司 | High-pressure electromagnetic starting device |
| CN109027222A (en) * | 2018-10-24 | 2018-12-18 | 扬州荣德新能源科技有限公司 | A kind of piston and the proportioning valve including it |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120530 Effective date of abandoning: 20130619 |
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| RGAV | Abandon patent right to avoid regrant |