WO2005050075A1 - 電磁弁 - Google Patents
電磁弁 Download PDFInfo
- Publication number
- WO2005050075A1 WO2005050075A1 PCT/JP2004/015431 JP2004015431W WO2005050075A1 WO 2005050075 A1 WO2005050075 A1 WO 2005050075A1 JP 2004015431 W JP2004015431 W JP 2004015431W WO 2005050075 A1 WO2005050075 A1 WO 2005050075A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- port
- electromagnetic
- iron core
- valve body
- Prior art date
Links
Classifications
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- 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
- F16K31/0655—Lift valves
- F16K31/0658—Armature and valve member being one single element
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M25/0836—Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
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- 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
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/08—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir
- F02M2025/0845—Electromagnetic valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/8667—Reciprocating valve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86718—Dividing into parallel flow paths with recombining
- Y10T137/86759—Reciprocating
Definitions
- the present invention relates to an electromagnetic valve used for controlling a flow rate of a fluid, and more particularly to an electromagnetic valve installed on a pipe connecting a canister for adsorbing gas evaporating from a fuel tank to an intake pipe of an engine.
- a canister to wear and a solenoid valve are installed.
- the output port of the solenoid valve is connected to the piping on the caster side, and the input port is connected to the intake pipe that supplies the mixture to the engine.
- the solenoid valve opens, the vapor pressure adsorbed on the canister is sucked by the negative pressure generated in the intake pipe and supplied to the engine.
- Opening and closing of a solenoid valve is performed by energizing or deenergizing an electromagnetic coil.
- An electromagnetic force is generated by energizing the electromagnetic coil, and the movable iron core is drawn to the fixed iron core that forms a magnetic circuit together with the electromagnetic coil to open the valve.
- an output port and an input port are formed in the housing of the solenoid valve, and an on-off valve is provided in a flow path connecting the output port and the input port.
- the on-off valve is formed from a valve port formed in a partition that closes the flow path, and a valve body that can open and close the valve port.
- the valve body is driven by the movable iron core such as a movable iron core itself, and is slidably fitted to the inner surface of the guide cylinder where the outer peripheral force of the valve port rises.
- a valve port to which the valve element can be freely moved is usually formed of a single circular hole.
- Patent Document 1 which discloses a related art, discloses that a valve opening is formed as an annular gap coaxial with an electromagnet, and the annular gap is coaxially arranged inside and outside by a ring-shaped double valve seat. It has been shown that the necessary flow cross-section can be obtained by surrounding the valve and configuring the valve member as an annular disk.
- the shut-off valve has a first closing body cooperating with the first valve seat, and the first valve seat is
- the second closing body is formed into a second closing body having a passage, and the second closing body engages with the second valve seat fixed to the casing by the action of the second spring, and the blade force of the spring is opposite to the blade force.
- the second closing body and the second valve seat are applied to the first closing body by the magnetic mover in the direction, and the second closing body and the second valve seat form a pressure limiting valve disposed in the casing of the shut-off valve. It is shown.
- Patent Document 3 discloses an input port to which pressure is supplied, an output port to be connected to an external device, and a flow through which an input port and an output port communicate with each other in accordance with energization and non-energization of a coil.
- a solenoid valve having a plunger for opening and closing a passage
- a fuel evaporative gas emission suppression device in which a chamber is provided in a flow passage from an output port to an opening / closing portion of the plunger.
- Patent Document 4 further includes an electromagnetic coil that generates an electromagnetic force when energized, a fixed iron core that forms a magnetic circuit with the electromagnetic coil that generates the electromagnetic force, and a mover.
- An electromagnetic valve that closes and opens when it comes into contact with and separates from the valve seat, wherein the fixed iron core is formed on the outer circumferential side fixed iron core formed on the outer circumferential side of the electromagnetic coil, and formed on the inner circumferential side of the electromagnetic coil,
- an electromagnetic valve including an inner peripheral fixed core positioned in the axial direction of the mover, and an electromagnetic coil covered by at least a part of the outer peripheral fixed core and the inner peripheral fixed core.
- Patent Document 1 JP-A-2-221669
- Patent Document 2 Japanese Patent Application Laid-Open No. 4 307186
- Patent Document 3 JP-A-2000-170948
- Patent Document 4 JP 2003-148646 A
- the opening area of the valve element that opens and closes the valve port formed by a single circular hole is increased. Do it.
- the opening area of the valve element is almost determined by the circumference of the valve port X and the lift of the valve element. Therefore, in order to increase the opening area, firstly, it is conceivable to increase the lift amount of the valve body. This force results in a reduction in the life of the valve body and an increase in operating noise, etc. .
- valve body is slidably fitted on the inner surface of the guide cylinder rising from the outer periphery of the valve port, it has been difficult to achieve light weight.
- the present invention has been made in view of the above-mentioned problems, and an object thereof is to secure a large flow rate without increasing the lift amount of the valve body and the electromagnetic attraction force, and to improve the valve body.
- An object of the present invention is to provide a solenoid valve capable of achieving light weight.
- the solenoid valve according to the present invention is configured such that the valve port is formed of a plurality of through-holes annularly arranged in a partition wall closing the middle of the flow path, and the axial force of one or both of the input port and the output port.
- One or both of the input port and the output port are arranged so as to intersect with the valve shaft of the valve body, and one or both of the input port and the output port are directed to the side of the valve port to thereby increase fluid pressure. Can be operated from the side of the valve port.
- valve port is arranged in a ring shape in the partition wall closing the middle of the flow path, so that the received pressure acting on the valve element can be reduced, and the electromagnetic attraction force required for displacement of the valve element increases.
- a large flow rate of the solenoid valve can be achieved without causing the fluid pressure to flow, and one or both of the input port and the output port face the valve port, so that the fluid pressure acts on the side of the valve port.
- the guide projection is formed on the partition wall closing the middle of the flow path, and the valve body is formed in a cylindrical shape, and the inner surface of the cylindrical valve body is formed on the guide projection.
- the valve is slidably fitted, and the valve port is formed in the partition wall around the guide projection.
- valve body can be lightened, and even if a pressure difference occurs on the outer periphery of the valve body, the valve body does not easily tilt.
- the solenoid valve according to the present invention includes an electromagnetic coil, the fixed iron core, the valve port, and a housing that can be divided into two to accommodate the valve body, and the valve port is in the middle of the flow path.
- One of the housings is formed from a plurality of through-holes arranged in an annular shape in a partition to be closed, and A flow path is formed in the housing divided body, the valve port is provided in the flow passage, and the valve body including the electromagnetic coil, the fixed iron core, and the movable iron core is provided in the other housing divided body.
- the sealing performance can be improved by preventing the fluid from flowing through the other divided body.
- FIG. 1 is a cross-sectional view showing Embodiment 1 of an electromagnetic valve according to the present invention, in which an upper half shows a valve open state and a lower half shows a valve closed state.
- FIG. 2 is a schematic plan view showing the shape of the valve port of the solenoid valve according to the present invention.
- FIG. 3 is a schematic cross-sectional view showing a state of fluid flowing into a valve port of the solenoid valve according to the present invention.
- FIG. 4] is a schematic plan view of a valve port formed with ribs of the solenoid valve according to the present invention.
- FIG. 5 is a schematic plan view showing a modification of the rib of FIG. 4 of the solenoid valve according to the present invention.
- FIG. 6 is a sectional view of the solenoid valve according to the present invention taken along line aa of FIG. 5.
- FIG. 7] is a sectional view showing a state where the valve element of the solenoid valve according to the present invention is fitted to the guide projection.
- FIG. 8 is a sectional view of the guide projection of the solenoid valve according to the present invention.
- FIG. 9 is an equivalent view of FIG. 1 showing a modification of the solenoid valve according to the present invention.
- FIG. 10 is an equivalent view of FIG. 1 showing another modification of the solenoid valve according to the present invention.
- FIG. 11 is a plan view showing another modification of the solenoid valve according to the present invention.
- FIG. 12] is a side view of FIG.
- FIG. 13 is an equivalent view of FIG. 1 showing another modification of the solenoid valve according to the present invention.
- FIG. 14 is an explanatory view of the operation of the solenoid valve according to the present invention, in which the upper half shows a valve open state and the lower half shows a valve closed state.
- FIG. 15 is a plan view showing Embodiment 2 of the solenoid valve according to the present invention.
- FIG. 16] is a side view of FIG.
- FIG. 17 is a front view of FIG. 15.
- FIG. 1 shows a solenoid valve according to the present invention.
- the upper half shows a valve open state
- the lower half shows a valve closed state
- FIG. 2 is a schematic plan view showing the shape of a valve port.
- 3 is a schematic cross-sectional view showing the state of fluid flowing into the valve port
- FIG. 4 is a schematic plan view of the valve port having ribs formed thereon
- FIG. 5 is a schematic plan view showing a modified example of the rib in FIG. 6 is a cross-sectional view taken along line a--a of FIG. 5
- FIG. 7 is a cross-sectional view showing a state where the valve body is fitted to the guide projection
- FIG. 8 is a cross-sectional view of the guide projection
- FIG. 9 is a modified example.
- FIG. 1 is a diagram corresponding to FIG. 1
- FIG. 10 is a diagram corresponding to FIG. 1 showing another modification
- FIG. 11 is a plan view showing another modification
- FIG. 12 is a side view of FIG. 11
- FIG. 13 is another modification.
- FIG. 1 and FIG. 14 are explanatory diagrams of the operation.
- the housing 1 of the solenoid valve is composed of two divided bodies 1A and IB!
- One of the divided bodies 1A has an electromagnetic coil 2, a fixed core 8 and a movable core 9 Are housed.
- a U-shaped yoke 6 is attached to the outside of the bobbin 5 holding the electromagnetic coil 2, and the tip of the yoke 6 is fitted and attached to a mounting plate 7 held by the bobbin 5.
- a movable core 9 slidably fitted to an outer surface of a guide projection 25 described later is disposed at a position facing the fixed core 8 fitted in the insertion hole of the bobbin 5.
- the movable iron core 9 is formed in a cylindrical shape having an axis common to the axis of the fixed iron core 8, and a vent hole 10 is formed in the center of the top wall forming one end face, and the other end face is opened.
- the flange 11 is formed at the opening edge!
- the flange 11 is provided with an elastic valve portion 12 having a force of rubber or the like, and the elastic valve portion 12 is formed with a plurality of hemispherical protrusions 13 for the stop ring.
- the protrusion 13 is made of rubber so that it cannot be pulled out of the flange 11 and can be brought into contact with the bobbin 5.
- the movable iron core 9 and the flexible valve portion 12 constitute a valve body 15.
- a coil panel 16 for urging the movable iron core 9 in a direction away from the fixed iron core 8 is provided between the fixed iron core 8 and the movable iron core 9.
- the first seal (O-ring) 17a is between the fixed core 8 and the bobbin 5
- the second seal (sealant) 17b is between the fixed core 8 and the housing divided body 1A
- the Third seal (sealant) 17c Each is sealed.
- Reference numeral 19 denotes a connector hole provided in the divided body 1A, and a terminal 20 for supplying a voltage to the electromagnetic coil 2 protrudes from the connector hole 19.
- the other divided body 1B of the housing 1 has an input port 21 connected to a canister for adsorbing evaporative gas from a fuel tank (not shown), and an intake pipe for supplying an air-fuel mixture to an engine (not shown).
- An output port 22 to be connected is formed.
- the axis of the port facing the valve port is preferably orthogonal to the axis of the movable iron core 9 constituting the valve element 15.
- the flow path 23 connecting the input port 21 and the output port 22 is closed by a partition wall 24, and a cylindrical guide projection 25 is formed at the center of the partition wall 24.
- the inner surface of the valve body 15 is slidably fitted to the outer surface of the guide projection 25.
- a plurality of, in the illustrated example, three through-holes 26 are formed in the partition 24 around the guide projection 25.
- the through hole 26 is also formed with a long hole extending in the circumferential direction of a circular arc 27 that is concentric with a circular contour that describes the outer peripheral surface of the guide projection 25. These through-holes 26 form a valve port 28 in which the valve element 15 is close to and separated from itself. On the periphery of each through hole 26, a rib 29 constituting a valve seat is formed as shown in FIG.
- the rib is constituted by an inner and outer double annular rib 30 concentric with an arc 27, and a through hole 26 can be formed between the inner and outer annular ribs 30. is there. At this time, the annular rib 30 is formed on the inner and outer peripheral edges of the through hole 26.
- the valve element 15 Since the valve element 15 is rotatable with respect to the guide projection 25, the valve element 15 may come into sliding contact with the ribs 29 and 30 while rotating at the time of opening and closing the valve. Therefore, as shown in FIG. 4, the ribs 29 may be continuous in the circumferential direction, or in other cases, the valve body 15 may be unevenly worn. Therefore, from the viewpoint of suppressing uneven wear, as shown in FIG. 5, the ribs are preferably constituted by inner and outer annular ribs 30.
- a plurality of longitudinal grooves 31 in the axial direction are provided on the outer peripheral surface of the guide projection 25.
- the vertical groove 31 forms a flow path 32 for guiding the evaporative gas flowing into the valve body 15 from the vent hole 10 toward the valve port 28 when the valve is opened, as described later.
- channel 32 is guided It is also possible to provide it on the valve body 15 that is not connected to the projection 25.
- a chamber 33 is formed at an opening of the input port 21 to the housing divided body 1B.
- the chamber 33 attenuates the operating noise and airflow noise when the valve body 15 is opened and closed. , Don't pass it to the canister! And to reduce vibration and resonance of the pipe and the canister by attenuating the pulsation of the fluid flowing in the pipe connecting the canister and the solenoid valve.
- the nozzleing divided bodies 1A and IB configured as described above are configured such that the fitting cylinder 35 extending from the bobbin 5 is fitted to the inner surface of the fitting cylinder 35 protruding from the opening of the divided body 1B. After that, the fitting portions are joined by ultrasonic welding. At this time, the divided body 1B and the bobbin 5 are made of the same material such as nylon so that welding is possible. In order to join the divided bodies 1A and IB, it is also conceivable to directly weld both divided bodies without using the bobbin 5 as described above.
- a resin such as PPS having a linear expansion coefficient close to that of the electromagnetic coil is used in consideration of expansion and contraction due to heat generation of the electromagnetic coil.
- resin such as PPS with low toughness is not suitable, and a resin with high toughness such as nylon is used.
- the bobbin 5 can be welded using the same material as the divided body 1B.
- FIG. 9 shows a modification, in which the output port 22 is arranged adjacent to the input port 21 and arranged in parallel with each other, and the input port 21 is provided with a filter 34 to prevent foreign matter from entering the housing 1. It is preventing.
- FIG. 10 shows another modification, in which the positions of the input / output ports 22 and 21 are changed in the axial direction of the nozzle, the position of the chamber 33 is changed accordingly, and the filter 34 is changed. Can be installed either in the chamber 33 or in the input port 21.
- FIGS. 11 and 12 show another modified example, which is different in that a third resonator port 36 for reducing airflow noise is provided in the housing divided body 1B.
- FIG. 13 shows another modification, in which the axis of the output port 22 is perpendicular to the axis of the input port 21, and the output port 22 is provided with a flow rate fluctuation caused by a negative pressure fluctuation in the intake pipe (not shown).
- the sonic nozzle 37 for reducing the noise is provided.
- the electromagnetic coil 2 When the electromagnetic coil 2 is energized, an electromagnetic force is generated, and the valve body 15 composed of the movable core is attracted to the fixed core 8 against the urging force of the coil panel 16. Then, the valve portion 12 is separated from the ribs 29, 30 of the valve port 28, and the stopper projection 13 contacts the bobbin 5. Since the projection 13 is formed of an elastic body, the sound of collision with the bobbin 5 is reduced. In addition, the projection 13 abuts on the bobbin 5 to prevent the top wall of the valve body 15 from abutting on the fixed iron core 8 and form a gap between the flange 11 of the valve body 15 and the bobbin 5. .
- the valve port is arranged in a ring shape in the partition wall closing the middle of the flow path, the reduction of the received pressure acting on the valve element can be reduced. It is possible to achieve a large flow rate of the solenoid valve without increasing the electromagnetic attraction force required for the displacement of the valve body, and to allow one or both of the input port and the output port to face the valve opening. Since the fluid pressure is configured to be able to act on the lateral force of the valve port, the fluid can flow into the valve port responsively when the valve body is opened, and the fluid followability at the time of opening the valve is improved.
- valve body is formed in a cylindrical shape and slidably fitted to the guide projection, the weight of the valve body can be reduced, and even if a pressure difference occurs on the outer periphery of the valve body, it is easy. Don't lean.
- the flow path is formed in one of the housing divisions provided with the valve port, it is possible to improve the sealing performance by preventing the fluid from flowing through the other division. In addition, permeation of the vaporized gas into the coil can be prevented.
- a rib as a valve seat on the rim of the valve port, and further, to form the rib into a double annular rib inside and outside, thereby improving the sealing performance of the valve body.
- the rib annular it is possible to prevent uneven wear of the valve body that is in sliding contact with the valve port while rotating.
- an auxiliary flow path is formed between the inner peripheral surface of the cylindrical valve body and the outer peripheral surface of the guide projection, the amount of fluid flowing into the valve port increases, and the flow rate of the solenoid valve can be increased.
- the elastic stopper is provided at the seating portion of the valve body, it is possible to prevent the valve body from abutting on the fixed iron core. It is possible to reduce the sound of collision with the member.
- one housing divided body is welded to the bobbin member for holding the electromagnetic coil, these can be made of the same material at the time of welding, so that welding can be easily performed.
- the output port is connected to a canister that adsorbs gas evaporating from the fuel tank, and the input port is connected to an intake pipe that sends air-fuel mixture to the engine. Can be supplied to
- vent hole 10 Since the vent hole 10 is formed in the valve body 15, fluid can flow into the valve body 15 from the vent hole 10 when the valve is opened, and the inside of the valve body 15 becomes negative pressure. Is prevented. Therefore, the electromagnetic attraction force for sucking the valve body 15 can be reduced. This is true even when the valve is closed. Since the inside of the valve body 15 is not at a negative pressure, the electromagnetic attraction force for opening the valve body 15 can be reduced.
- FIG. 15 is a plan view showing a solenoid valve according to Embodiment 2 of the present invention
- FIG. 16 is a side view of FIG.
- FIG. 17 is a front view of FIG. 15. And duplicate explanations are omitted.
- the input port 21 and the output port 22 are arranged on a straight line, so that compactness is possible and the vehicle layout is advantageous.
- the output port is connected to the pipe on the canister side, and the input port is connected to the intake pipe, and by opening the solenoid valve, the negative pressure generated in the intake pipe is reduced. Suitable for supplying evaporative gas adsorbed on the caster to the engine.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200411000114 DE112004000114B4 (de) | 2003-11-21 | 2004-10-19 | Magnetventil |
US10/541,131 US7290564B2 (en) | 2003-11-21 | 2004-10-19 | Solenoid valve |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003392511A JP2005155712A (ja) | 2003-11-21 | 2003-11-21 | 電磁弁 |
JP2003-392511 | 2003-11-21 |
Publications (1)
Publication Number | Publication Date |
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WO2005050075A1 true WO2005050075A1 (ja) | 2005-06-02 |
Family
ID=34616454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/015431 WO2005050075A1 (ja) | 2003-11-21 | 2004-10-19 | 電磁弁 |
Country Status (4)
Country | Link |
---|---|
US (1) | US7290564B2 (ja) |
JP (1) | JP2005155712A (ja) |
DE (1) | DE112004000114B4 (ja) |
WO (1) | WO2005050075A1 (ja) |
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CN103939655A (zh) * | 2013-01-17 | 2014-07-23 | Smc株式会社 | 高频度开闭阀门 |
CN108612900A (zh) * | 2018-05-28 | 2018-10-02 | 三河平恩康汽车技术有限公司 | 碳罐电磁阀 |
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DE102005051937A1 (de) * | 2005-10-29 | 2007-05-03 | Pierburg Gmbh | Schubumluftventilvorrichtung für eine Brennkraftmaschine |
JP4755513B2 (ja) * | 2006-03-22 | 2011-08-24 | 本田技研工業株式会社 | 遮断弁 |
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- 2004-10-19 DE DE200411000114 patent/DE112004000114B4/de not_active Expired - Fee Related
- 2004-10-19 WO PCT/JP2004/015431 patent/WO2005050075A1/ja active Application Filing
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1898136A1 (en) * | 2005-06-24 | 2008-03-12 | CKD Corporation | Flow control valve |
EP1898136A4 (en) * | 2005-06-24 | 2008-08-20 | Ckd Corp | FLOW CONTROL VALVE |
US7748684B2 (en) | 2005-06-24 | 2010-07-06 | Ckd Corporation | Flow control valve |
US8492538B1 (en) | 2009-06-04 | 2013-07-23 | Jose R. Matos | Cyclodextrin derivative salts |
CN103939655A (zh) * | 2013-01-17 | 2014-07-23 | Smc株式会社 | 高频度开闭阀门 |
CN108612900A (zh) * | 2018-05-28 | 2018-10-02 | 三河平恩康汽车技术有限公司 | 碳罐电磁阀 |
Also Published As
Publication number | Publication date |
---|---|
JP2005155712A (ja) | 2005-06-16 |
DE112004000114T5 (de) | 2006-03-30 |
DE112004000114B4 (de) | 2009-01-15 |
US20060081801A1 (en) | 2006-04-20 |
US7290564B2 (en) | 2007-11-06 |
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