WO1999015775A1 - Ventileinrichtung - Google Patents
Ventileinrichtung Download PDFInfo
- Publication number
- WO1999015775A1 WO1999015775A1 PCT/DE1998/002709 DE9802709W WO9915775A1 WO 1999015775 A1 WO1999015775 A1 WO 1999015775A1 DE 9802709 W DE9802709 W DE 9802709W WO 9915775 A1 WO9915775 A1 WO 9915775A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve device
- sealing
- opening
- connection
- sealing seat
- Prior art date
Links
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
- 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
-
- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0218—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with only one sealing face
-
- 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
Definitions
- the invention relates to a valve device, in particular for tank ventilation in motor vehicles, with the features mentioned in the preamble of claim 1.
- a tank ventilation valve is arranged in the connection path.
- the tank ventilation valve has an actuating device which can be controlled by an electromagnetic switching device and by means of which a closing body can be displaced from a closed position into an open position and vice versa.
- the electromagnetic switching device is modulated by means of a pulse width Control current controlled, so that a certain clock ratio, with which the closing body opens or closes, is established.
- the disadvantage here is that in valves with anchors running between two end stops corresponding to the relatively low clock frequency, which is 15 Hz, for example, there is considerable noise.
- constant dosing is not possible due to the constant change between the closed and open positions.
- the valve device according to the invention with the features mentioned in claim 1 offers the advantage that a low-noise and precisely metered flow rate setting is possible.
- the actuating device comprises a closing body, by means of which a free cross-sectional area between the connections connected to the evacuating space and the vacuum source can be continuously changed from a sealing position to a maximum position, any flow rate can be controlled very precisely via a control current of the electromagnetic switching device be regulated.
- the closing body can thus be brought into any intermediate position between its sealing position and its maximum position, so that a continuous movement and thus continuous adaptation of the free cross section is possible.
- Figure 1 is a sectional view through a valve device
- Figure 2 is a plan view of a closing body of the valve device.
- FIG. 1 shows a generally designated 10 valve device for flushing a filter device, not shown, of a motor vehicle.
- the valve device 10 has a housing 12 from which a connecting piece 14 and a connecting piece 16 arise.
- the connection piece 14 can be connected to a tank and the connection piece 16 to a vacuum source.
- the connecting pieces 14 and 16 open into an interior 18, which thus represents a connection between the connecting pieces 14 and 16.
- the valve device 10 comprises a magnetic coil 20 which encompasses a magnetic core 22.
- the magnetic core 22 has an axial through opening 24, the one Has ring stage 26.
- An adjusting screw 28 can be screwed into a section of the ring step 26, shown here on the left.
- a corresponding internal thread is provided in the housing 12 and / or the magnetic core 22.
- the section on the right, in the illustration shown, of the ring step 26 accommodates a bearing 30 which is movably guided in the through opening 24.
- the annular step 26 or the adjusting screw 28 form a stop for the bearing 30.
- a spring element 32 is supported on the bearing 30, which on the other hand engages a collar 34 of an adjusting device 36 which is axially displaceable against the force of the spring element 32.
- the actuating device 36 carries an armature 38 which is guided by a cup-shaped disk 40.
- the disk 40 has a correspondingly designed through opening, in which the armature 38 is guided without play.
- a corresponding recess 42 is provided in the magnetic core 22 in accordance with the maximum movement path of the armature 38.
- the actuating device 36 is supported on a spring element 43, which is designed, for example, as a plate spring or a meandering spring.
- the movements of the armature 38 are damped by means of the spring element 43.
- the actuating device 36 further comprises an axial extension 44 which carries a closing body 46.
- the closing body 46 is formed by a sealing washer 48 which has a through opening 50.
- the sealing washer 48 rests on a sealing seat 52 which is arranged at the interior end of the connecting piece 16.
- the sealing seat 52 has an annular guide surface 54 on which the sealing disk 48 rests.
- the sealing seat 52, at least its guide surface 54, and the sealing disk 48 consist of a material with low frictional resistance, for example of a ceramic.
- the sealing disk 46 is pressed against the sealing seat 52 via a spring element 56, which is supported on the axial extension 54 on the one hand and a collar 58 arranged in the connecting piece 14 on the other hand.
- the collar 58 is part of a sieve 60, which collects any contamination.
- the collar 58 and the extension 44 have pins 62 and 64 for guiding the spring element 56.
- the spring element 56 exerts a slight contact pressure on the sealing disk 46, so that it lies sealingly on
- the valve device 10 further comprises electrical connection contacts 66 for the magnetic coil 20.
- a sealing ring 68 is provided for sealing the interior 18 and is arranged in a corresponding recess in the housing 12. Further structural parts of the valve device 10, in particular housing parts, elements belonging to the magnetic circuit of the solenoid valve, connecting elements, etc. will not be further discussed in the description.
- the valve device 10 shown in FIG. 1 performs the following function: When the magnet coil 20 is not energized, the armature 34 is held in its rest position by the spring element 32.
- the closing body 46 is in its sealing position in that the sealing disk 48 completely covers the through opening 70 formed by the sealing seat 52.
- the through opening 50 of the sealing washer 48 is located outside the through opening 70, so that a connection between the interior 18 and the connecting piece 16 is sealed by the sealing seat 52 and the sealing washer 48.
- This is illustrated in the plan view of the closing body 46 shown in FIG. 2, in that the through opening 50, viewed in plan view, lies next to the through opening 70, shown in broken lines.
- the armature 38 moves proportionally.
- the degree of coverage of the through openings 50 and 70 changes accordingly.
- the degree of coverage can thus be directly influenced by the level of the control current.
- the spring element 32 can be prestressed by means of the adjusting screw 28, so that the force to be overcome by the armature 38 can be varied.
- the valve device 10 can be adjusted by setting a specific free cross-sectional area between the through openings 50 and 70 for a specific control current present.
- the plan view shown in FIG. 2 clearly shows that the through opening 50 of the sealing disk 46 has a special contour.
- This contour can consist, for example, of the passage opening 50 being formed by a semicircle, the radius of which corresponds to the radius of the passage opening 70 and a nose-shaped projection 72 originating from this semicircle in the direction of the sealing seat 52.
- This projection 72 runs with a taper in the direction of the sealing seat 52. This ensures that when the armature 34 is only slightly tightened, the projection 72 initially only overlaps the passage opening 70, if necessary only partially.
- the free cross-sectional area between the through openings 50 and 70 is then formed by the surface of the projection 72 which is in register with the through opening 70. This provides very precise, especially in very fine steps, metering options.
- the space connected to the connecting piece 14 is evacuated.
- This evacuation is determined by the free cross-sectional area between the through openings 50 and 70.
- the contour of the passage opening 50 can be designed to be variable in order to set certain throughput sizes or throughput characteristics. For example, several projections that differ in their shape are conceivable.
- the sealing washer 48 can be detachably connected to the extension 44, for example, in that it can be snapped into corresponding latching means. As a result, the sealing disks 48 with different contours of the through opening 50 can be replaced at any time, so that the valve device 10 can be converted.
- valve device 10 with the exception of the electrically and magnetically acting parts, all parts, in a manner suitable for mass production, can be designed as plastic injection-molded parts. These can therefore be manufactured in large quantities with high dimensional accuracy and low weight.
- a constant variation of the free cross-section between the through openings 50 and 70 can be set via the design of the control current for the magnetic coil 20.
- a sealing position the that is, the armature 34 is in its rest position, and any intermediate position is possible in a maximum position, that is, the armature 34 is maximally drawn into the recess 42.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Magnetically Actuated Valves (AREA)
- Fluid-Driven Valves (AREA)
- Polarising Elements (AREA)
- Details Of Valves (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98955316A EP0954692A1 (de) | 1997-09-24 | 1998-09-14 | Ventileinrichtung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29717078.3 | 1997-09-24 | ||
DE29717078U DE29717078U1 (de) | 1997-09-24 | 1997-09-24 | Ventileinrichtung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999015775A1 true WO1999015775A1 (de) | 1999-04-01 |
Family
ID=8046393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1998/002709 WO1999015775A1 (de) | 1997-09-24 | 1998-09-14 | Ventileinrichtung |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0954692A1 (de) |
DE (1) | DE29717078U1 (de) |
WO (1) | WO1999015775A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19807503A1 (de) | 1998-02-21 | 1999-08-26 | Bosch Gmbh Robert | Ventileinrichtung |
DE19810212A1 (de) | 1998-03-10 | 1999-09-16 | Bosch Gmbh Robert | Ventileinrichtung |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4538653A (en) * | 1984-12-04 | 1985-09-03 | Genoa Group Inc. | Closure and valve for liquid container |
US4875499A (en) * | 1981-10-16 | 1989-10-24 | Borg-Warner Corporation | Proportional solenoid valve |
US5100565A (en) * | 1990-06-29 | 1992-03-31 | Tokyo Yogyo Kabushiki Kaisha | Valve of faucet |
DE4131976A1 (de) * | 1991-09-25 | 1993-04-01 | Ross Europa Gmbh | Anordnung zum rueckfuehren von kohlenwasserstoffen bei kraftstoffbetankungsanlagen |
DE4237087A1 (de) * | 1992-11-03 | 1994-05-05 | Voss Armaturen | Magnetventil mit progressiver Rückstellfeder |
EP0604285A1 (de) * | 1992-12-21 | 1994-06-29 | Magneti Marelli France | Elektrisch gesteuertes Ventil für Kanisterwiederaufbereitungssystem |
DE19540021A1 (de) * | 1995-10-27 | 1997-04-30 | Bosch Gmbh Robert | Ventil zum dosierten Einleiten von aus einem Brennstofftank einer Brennkraftmaschine verflüchtigtem Brennstoffdampf |
-
1997
- 1997-09-24 DE DE29717078U patent/DE29717078U1/de not_active Expired - Lifetime
-
1998
- 1998-09-14 WO PCT/DE1998/002709 patent/WO1999015775A1/de not_active Application Discontinuation
- 1998-09-14 EP EP98955316A patent/EP0954692A1/de not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4875499A (en) * | 1981-10-16 | 1989-10-24 | Borg-Warner Corporation | Proportional solenoid valve |
US4538653A (en) * | 1984-12-04 | 1985-09-03 | Genoa Group Inc. | Closure and valve for liquid container |
US5100565A (en) * | 1990-06-29 | 1992-03-31 | Tokyo Yogyo Kabushiki Kaisha | Valve of faucet |
DE4131976A1 (de) * | 1991-09-25 | 1993-04-01 | Ross Europa Gmbh | Anordnung zum rueckfuehren von kohlenwasserstoffen bei kraftstoffbetankungsanlagen |
DE4237087A1 (de) * | 1992-11-03 | 1994-05-05 | Voss Armaturen | Magnetventil mit progressiver Rückstellfeder |
EP0604285A1 (de) * | 1992-12-21 | 1994-06-29 | Magneti Marelli France | Elektrisch gesteuertes Ventil für Kanisterwiederaufbereitungssystem |
DE19540021A1 (de) * | 1995-10-27 | 1997-04-30 | Bosch Gmbh Robert | Ventil zum dosierten Einleiten von aus einem Brennstofftank einer Brennkraftmaschine verflüchtigtem Brennstoffdampf |
Also Published As
Publication number | Publication date |
---|---|
DE29717078U1 (de) | 1997-11-13 |
EP0954692A1 (de) | 1999-11-10 |
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