KR20170079250A - Solenoid Valve With Lift Control structure - Google Patents

Solenoid Valve With Lift Control structure Download PDF

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Publication number
KR20170079250A
KR20170079250A KR1020150189614A KR20150189614A KR20170079250A KR 20170079250 A KR20170079250 A KR 20170079250A KR 1020150189614 A KR1020150189614 A KR 1020150189614A KR 20150189614 A KR20150189614 A KR 20150189614A KR 20170079250 A KR20170079250 A KR 20170079250A
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KR
South Korea
Prior art keywords
magnet core
chamber
pressure
fuel
armature
Prior art date
Application number
KR1020150189614A
Other languages
Korean (ko)
Inventor
박형균
Original Assignee
주식회사 현대케피코
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 현대케피코 filed Critical 주식회사 현대케피코
Priority to KR1020150189614A priority Critical patent/KR20170079250A/en
Publication of KR20170079250A publication Critical patent/KR20170079250A/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/029—Electromagnetically actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
    • F16K31/0644—One-way valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/302—Fuel-injection apparatus having mechanical parts, the movement of which is damped using electrical means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

The present invention relates to a solenoid valve having a lift control structure, including a magnet core for generating a magnetic force, a magnet coil assembly for generating a magnetic force in the magnet core when an electric current is applied, an armature movably coupled to the operation chamber, A valve seat having a fuel passage, a valve body for opening and closing the fuel passage of the valve seat, and a return spring for elastically supporting the valve body on the magnet core. And a control unit. Accordingly, the valve body is configured to be opened when the pressure in the high-pressure fuel chamber becomes lower than the pressure in the low-pressure sub fuel chamber, so that even when an abnormality occurs in the magnet coil assembly, the minimum fuel necessary for driving the engine can be supplied. Consumer complaints can be solved.

Description

[0001] The present invention relates to a solenoid valve having a lift control structure,

The present invention relates to a solenoid valve, and more particularly, to a solenoid valve having a lift control structure capable of controlling a flow rate by a lift control.

Generally, a solenoid valve is used for opening and closing a channel through an armature by moving an armature by a magnetic field when power is applied, and is used in various industrial fields.

In particular, solenoid valves are used in brake systems, automatic transmissions, fuel systems, among various parts of automobiles. An example of such a solenoid valve is shown in FIG.

The solenoid valve 10 includes a magnet core 11 generating a magnetic force, an armature 12 reciprocating by the magnetic force of the magnet core 11, and an armature 12 coupled to the armature 12, The valve body 13 is moved together with the movable portion 12 to open and close the fuel passage between the high-pressure fuel chamber 21 and the low-fitting portion fuel chamber 22. The valve body 13 is moved by the armature 12 when the armature 12 is reciprocated. And a stopper washer 14 that prevents the armature 20 and the armature 12 from being damaged or abraded by impact.

Here, a bushing 13a having a component chamber at a lower portion of the magnet core 11 and fixed to the upper portion of the valve body 13, and a return spring 13b for urging the bushing 13a against the magnet core 11 ) Is installed.

The armature 12 is fitted to the outer periphery of the valve body 13 under the bushing 13a so that the armature 12 is moved to the magnet core 11 by the magnetic force of the magnet core 11 provided on the armature 12 .

The solenoid valve 10 causes the armature 12 to move toward the magnet core 11 by the magnetic force when a magnetic force is generated in the magnet core 11 and a return spring 13b for resiliently supporting the valve body 13 at this time, An elastic force is applied. At this time, the valve body 13 is moved to the opposite side of the magnet core 11 together with the armature 12 due to the load of the valve body 13 and the elastic force of the return spring 13b, so that the low-pressure fuel chamber 22 and the high- ) Of the fuel passage.

When the current supply to the solenoid valve 10 is interrupted, the valve body 13 is lowered downward due to the magnetic force of the magnet core 11 and the low-pressure fuel chamber 22 and the high-pressure fuel chamber 21 The fuel in the low-pressure portion fuel chamber 22 escapes to the high-pressure portion fuel chamber 21. The high-

The conventional solenoid valve is structured such that fuel is compressed only by opening and closing the fuel passage by reciprocating movement of the valve body 13, so that if an abnormality occurs in the magnet coil assembly and current is not supplied, the fuel passage is always open .

Therefore, even if the piston of the high-pressure fuel chamber 21 is operated, the pressure of the high-pressure fuel chamber 21 is kept low and the check valve 15 provided in the discharge portion is closed, So that the engine can not be operated.

Korean Unexamined Patent Application Publication No. 10-0062557 (June 14, 2012)

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a fuel supply system for an internal combustion engine, And a solenoid valve having a lift control structure for allowing the fuel of the engine to be supplied to the engine.

According to an aspect of the present invention, there is provided a fuel cell system including a low-pressure fuel chamber formed at a lower portion thereof, a magnet core for generating a magnetic force, and an operation chamber coupled to the magnet core, A cylinder in which a high pressure fuel chamber is formed by forming an engaging groove in which a magnet core is fitted and engaged and which extends in the engaging groove; A valve seat for partitioning the fuel chamber and the high-pressure fuel chamber and forming a fuel transfer passage through which the fuel in the low-pressure fuel chamber is moved to the high-pressure fuel chamber, an upper end portion coupled to the armature, and a lower end portion passing through the magnet core and the valve seat, A valve body disposed between the magnet core and the armature to open and close the fuel passage, And a return spring for elastically supporting the magnet on the magnet core.

The magnet core is formed with a fitting portion to be fitted into the coupling groove of the cylinder at a predetermined height at a lower end of the magnet core, and a step for engaging with the upper end of the coupling groove after the fitting portion is inserted into the coupling groove is formed .

It is preferable that the armature is provided with a fixing groove in which the upper end of the valve body is fitted and fixed by inserting the upper end of the valve body into a lower portion of the fixing groove and a supporting groove having an inner diameter larger than the inner diameter of the fixing groove, Do.

In addition, the valve body may be spaced from the upper end to the lower end so that the support protrusion is protruded, and the support protrusion is preferably supported at the edge of the support groove.

Preferably, the valve body is formed with a protrusion for opening and closing a fuel passage of the valve seat at a lower end portion exposed to the high-pressure fuel chamber.

An operation chamber extension portion for extending the operation chamber is formed at an upper portion of the magnet core and connected to the lower side of the operation chamber formed in the magnet coil assembly. The inner diameter of the operation chamber extension portion is formed to be the same as the inner diameter of the operation chamber desirable.

It is preferable that a stopper washer is provided in the working chamber extension portion of the magnet core to prevent the armature and the magnet core from being deformed or damaged when the armature of the working chamber moves up and down by absorbing the impact of the armature.

According to the present invention, since the valve body is configured to be opened when the pressure in the high-pressure fuel chamber becomes lower than the pressure in the low-pressure sub fuel chamber, even if an abnormality occurs in the magnet coil assembly, the minimum fuel necessary for driving the engine can be supplied, It is possible to eliminate the consumer's complaints caused by the breakdown.

1 is a sectional view showing a conventional solenoid valve.
2 is a cross-sectional view of a solenoid valve according to an embodiment of the present invention;
FIGS. 3 and 4 are cross-sectional views showing an operating state when no current is applied to the magnet coil assembly in the solenoid valve of FIG. 1; FIG.
FIG. 5 and FIG. 6 are cross-sectional views illustrating operation states of a magnet coil assembly in a solenoid valve of FIG. 1 upon application of a current;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 2 is a cross-sectional view illustrating a solenoid valve according to an embodiment of the present invention, FIGS. 3 and 4 are cross-sectional views illustrating an operating state when no current is applied to the magnet coil assembly in the solenoid valve of FIG. 1, 5 and 6 are sectional views showing an operating state of a magnet coil assembly in a solenoid valve of FIG. 1 when current is applied.

A solenoid valve 100 according to an embodiment of the present invention is installed in a fuel pump that pumps fuel (hereinafter referred to as fuel) in a fuel tank of a fuel system and compresses the fuel at a high pressure. The solenoid valve 100 includes a magnet core 110, A magnet coil assembly 120, an armature 130, a cylinder 140, a valve body 150, and a return spring 160.

The magnet core 110 generates a magnetic force when an electric current is applied to a magnet coil assembly 120 to be described later. The magnet core 110 is formed in a cylindrical shape, and a low-pressure fuel chamber 111 is formed below the magnet core 110.

The magnet core 110 has a fitting portion 112 at an intermediate portion of the outer circumferential surface thereof and is engaged with the coupling groove 141 of the cylinder 140 described later. That is, the fitting portion 112 of the magnet core 110 has a step 113 formed on the upper end thereof and the step 113 is engaged with the upper end of the coupling groove 141 to be further fitted into the coupling groove 141 .

The magnet coil assembly 120 includes an operation chamber 121 which covers the upper portion of the magnet core 110 and in which the armature 130 moves up and down and generates a magnetic force to the magnet core 110 when an electric current is applied.

The armature 130 is formed in a substantially cylindrical shape and is vertically movably installed in the operation chamber 121 of the magnet coil assembly 120. At the lower portion of the armature 130, there is formed a fixing groove to which an upper end of a valve body 150 described later is coupled. In the lower portion of the fixing groove, a support groove having an inner diameter larger than the inner diameter of the fixing groove and supporting the return spring 160 to be described later is formed.

A working chamber extension 115 for extending the working chamber 121 of the magnet coil assembly 120 is formed in the upper portion of the magnet core 110. The inside diameter of the working chamber extension 115 is connected to the working chamber 121).

The magnet core 110 is provided with a separate stopper washer 117 on the upper surface of the armature extension portion 115 to absorb the impact caused by the upward and downward movement of the armature 130, And the magnet core 110 are prevented from being deformed and damaged. Here, the working chamber extension portion 115 of the magnet core 110 serves to prevent the stopper washer 117 from being inserted and removed.

Accordingly, when a current is applied to the magnet coil assembly 120, a magnetic force is generated in the magnet core 110, and the armature 130 installed in the operation chamber 121 is moved toward the magnet core 110 by the magnetic force.

The cylinder 140 is formed with a coupling groove 141 in which the fitting portion 112 of the magnet core 110 is fitted and engaged and the high pressure fuel chamber 142 is formed in the coupling groove 141, The fuel chamber 142 is provided with a discharge portion 143 through which fuel is discharged and a check valve 144 is provided in the discharge portion 143 to discharge fuel when the high pressure is generated in the high pressure fuel chamber 142 do.

The cylinder 140 is provided with an inlet 145 communicating with the low pressure fuel chamber 111 provided at a lower portion of the magnet core 110 coupled to the coupling groove 141 and for introducing fuel.

The valve seat 170 is coupled to the lower inner end of the low pressure portion fuel chamber 111 provided at the lower portion of the magnet core 110 so as to move the fuel in the low pressure portion fuel chamber 111 to the high pressure portion fuel chamber 142 A fuel passage 171 is provided.

At the center of the valve seat 170, there is formed a through hole through which a valve body 150, which will be described later, is inserted. Accordingly, the lower end of the valve body 150 penetrates through the through-hole and protrudes into the high-pressure fuel chamber 142. When the valve body 150 is moved, the fuel passage 171 formed in the valve seat 170 is opened / .

The valve body 150 has an upper end fixed to the fixing groove of the armature 130 and a lower end penetrated through the magnet core 110 and the through hole of the valve seat 170 to be exposed to the high pressure fuel chamber 142, Thereby opening and closing the fuel passage 171 of the fuel passage 170.

The valve body 150 is provided at its lower end with an opening / closing protrusion 151 for opening / closing the fuel passage 171.

 The valve body 150 supports the upper end of a return spring 160, which will be described later, in which the support protrusion 152 protrudes from the upper end and is fitted to the outer circumference of the valve body 150.

The return spring 160 is inserted between the armature 130 and the magnet core 110 and is fitted to the outer periphery of the valve body 150 so that the upper end of the return spring 160 is supported by the support protrusions 152 of the valve body 150, As shown in Fig.

The return spring 160 compresses the armature 130 when the armature 130 is moved toward the magnet core 110 by the magnetic force of the magnet core 110 by applying a current to the magnet coil assembly 120, 110 to the opposite side.

The operation of the solenoid valve according to an embodiment of the present invention having the above-described structure will be briefly described.

2, an electric current is not applied to the magnet coil assembly 120 so that the armature 130 is operated by the return spring 160 to operate the magnet coil assembly 120 And the valve body 150 fixed to the armature 130 is located above the seal 121 and blocks the fuel passage 171 of the valve seat 170. [

First, the operation of the solenoid valve 100 when no current is applied to the magnet coil assembly 120 will be described with reference to FIGS. 3 and 4. FIG.

When the piston 180 provided at the lower side of the high pressure fuel chamber 142 of the cylinder 140 is lowered and the pressure of the high pressure fuel chamber 142 is lowered to fall below the pressure of the low pressure fuel chamber 111, The valve body 150 is lowered to open the fuel passage 171 of the valve seat 170 by resisting the return spring 160 as shown in FIG. Then, the fuel in the low-pressure fuel chamber 111 is moved to the high-pressure fuel chamber 142 through the fuel passage 171 of the opened valve seat 170.

Then, the piston 180 provided below the high-pressure fuel chamber 142 of the cylinder 140 rises.

Then, the piston 180 pressurizes the fuel in the high-pressure fuel chamber 142, and the pressure of the high-pressure fuel chamber 142 rises and becomes higher than the pressure of the low-pressure fuel chamber 111. The valve body 150 fixed to the armature 130 is lifted by the elastic force of the return spring 160 to close the fuel passage 171 of the valve seat 170 to seal the high-pressure fuel chamber 142.

At this time, the fuel in the sealed high-pressure fuel chamber 142 is supplied to the combustion chamber of the engine while discharging through the discharge portion 143 by opening the check valve 144 provided in the discharge portion 143 as the pressure is continuously increased . At this time, the amount of fuel supplied to the engine is the minimum amount for driving the engine.

Then, the low-pressure sub fuel chamber 111 is filled with fuel and the fuel passage 171 of the valve seat 170 is clogged, and is prepared for the next cycle.

The operation of the solenoid valve 100 when a current is applied to the magnet coil assembly 120 will be described with reference to FIGS. 5 and 6. FIG.

When a current is applied to the magnet coil assembly 120, a magnetic force is generated in the magnet core 110, and the armature 130 is pulled toward the magnet core 110. Then, the valve body 150 fixed to the armature 130 moves downward together with the armature 130. At this time, the fuel passage 171 of the valve seat 170 closed by the opening / closing protrusion 151 of the valve body 150 is opened. Then, the fuel flowing into the low-pressure fuel chamber 111 enters the high-pressure fuel chamber 142 through the fuel passage 171 of the valve seat 170. At this time, as the piston 180 descends, the high-pressure fuel chamber 142 is filled with a larger amount of fuel.

Thereafter, the current applied to the magnet coil assembly 120 is cut off, and the piston 180 is raised. The magnetic force is lost to the magnet core 110 and the armature 130 which is close to the magnet core 110 is moved to the opposite side of the magnet core 110 by the elastic force of the return spring 160. Then, the lower end of the valve body 150 fixed to the armature 130 is lifted and the fuel passage 171 of the valve seat 170 is closed.

Then, as the pressure of the fuel inside the high-pressure fuel chamber 142 is increased while the fuel is being compressed, the check valve 144 provided in the discharge portion 143 is opened.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is understandable. Accordingly, the true scope of the present invention should be determined by the following claims.

100: Solenoid valve
110: Magnet core 111: Low pressure fuel chamber
112: fitting portion 113:
115: Working chamber extension part 117: Stopper washer
120: Magnet coil assembly
121: working room
140: Cylinder
141: coupling groove 142: high-pressure fuel chamber
143: discharge part 144: check valve
145:
150: Valve body
151: open / close projection 152: support projection
160: return spring
170: valve seat
180: Piston

Claims (7)

A low-pressure fuel chamber formed at a lower portion thereof and generating a magnetic force;
A magnet coil assembly coupled to the magnet core, the magnet coil assembly having a working chamber and generating a magnetic force in the magnet core when an electric current is applied;
An armature reciprocally coupled to the working chamber;
A cylinder in which a coupling groove in which a magnet core is fitted and coupled is formed and which extends in the coupling groove to form a high-pressure fuel chamber;
A valve seat partitioning the low-pressure sub fuel chamber and the high-pressure fuel chamber and forming a fuel transfer passage through which the fuel in the low-pressure sub fuel chamber moves to the high-pressure fuel chamber;
A valve body having an upper end coupled to the armature and a lower end passing through the magnet core and the valve seat and exposed to the high pressure fuel chamber to open and close the fuel transfer passage;
And a return spring provided between the magnet core and the armature to elastically support the valve body to the magnet core,
Wherein the solenoid valve is configured to open and close the fluid passage of the valve seat due to a pressure difference between the low-pressure fluid space and the high-pressure fluid space even when no current is applied to the magnet coil. The method according to claim 1,
The magnet core
A fitting portion is formed at the lower end thereof to be fitted into the coupling groove of the cylinder at a predetermined height,
And a step for engaging with an upper end of the engaging groove after the fitting portion is fitted in the engaging groove is formed in the solenoid valve. The method according to claim 1,
The amateur,
And a fixing groove is formed in the lower portion of the valve body,
Wherein a lower portion of the fixing groove has an inner diameter larger than an inner diameter of the fixing groove and has a support groove in which a return spring is inserted and supported. The method of claim 3,
The valve body,
A support protrusion is protruded from the upper end to the lower end,
And the support protrusions are supported by the edges of the support grooves. 5. The method of claim 4,
The valve body,
And an opening / closing projection for opening and closing the fuel passage of the valve seat is protruded and formed at a lower end portion exposed to the high-pressure fuel chamber. The method according to claim 1,
At the top of the magnet core
An operation chamber extension portion connected to a lower side of the operation chamber formed in the magnet coil assembly to extend the operation chamber,
And the inner diameter of the working chamber extension is formed to be the same as the inner diameter of the working chamber. The method according to claim 6,
The working chamber extension of the magnet core
Wherein a stopper washer is provided for absorbing an impact when the armature moves up and down to prevent the armature and the magnet core from being deformed or damaged.
KR1020150189614A 2015-12-30 2015-12-30 Solenoid Valve With Lift Control structure KR20170079250A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150189614A KR20170079250A (en) 2015-12-30 2015-12-30 Solenoid Valve With Lift Control structure

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Application Number Priority Date Filing Date Title
KR1020150189614A KR20170079250A (en) 2015-12-30 2015-12-30 Solenoid Valve With Lift Control structure

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110469690A (en) * 2019-08-28 2019-11-19 温州大阳科技有限公司 A kind of self-cleaning structure for diaphragm pinch valve
WO2020080824A1 (en) * 2018-10-16 2020-04-23 주식회사 만도 Solenoid valve
KR102230582B1 (en) * 2020-03-13 2021-03-22 주식회사 유니크 Solenoid valve for fuel cell vehicle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020080824A1 (en) * 2018-10-16 2020-04-23 주식회사 만도 Solenoid valve
US11648926B2 (en) 2018-10-16 2023-05-16 Hl Mando Corporation Solenoid valve
CN110469690A (en) * 2019-08-28 2019-11-19 温州大阳科技有限公司 A kind of self-cleaning structure for diaphragm pinch valve
KR102230582B1 (en) * 2020-03-13 2021-03-22 주식회사 유니크 Solenoid valve for fuel cell vehicle

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