EP0981706A1 - Systeme de vanne a obturateur - Google Patents

Systeme de vanne a obturateur

Info

Publication number
EP0981706A1
EP0981706A1 EP98962238A EP98962238A EP0981706A1 EP 0981706 A1 EP0981706 A1 EP 0981706A1 EP 98962238 A EP98962238 A EP 98962238A EP 98962238 A EP98962238 A EP 98962238A EP 0981706 A1 EP0981706 A1 EP 0981706A1
Authority
EP
European Patent Office
Prior art keywords
sealing
valve device
opening
rotation
sealing washer
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP98962238A
Other languages
German (de)
English (en)
Inventor
Wolfgang Schulz
Manfred Zimmermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0981706A1 publication Critical patent/EP0981706A1/fr
Withdrawn legal-status Critical Current

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
    • F16K3/04—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 pivoted closure members
    • F16K3/06—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages
    • F16K3/08—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
    • 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
    • F16K3/30—Details
    • F16K3/34—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve

Definitions

  • the invention relates to a valve device, in particular for tank ventilation in motor vehicles, according to the preamble of claim 1.
  • Such a valve device is used, for. B. the regeneration of activated carbon in the fuel evaporation retention system for fuel circuits in motor vehicles, as described for example in the publication Bosch - Technische Untermik, Motormanagement Motronic, 2nd edition, August 1993, on pages 48 and 49.
  • Fuel retention systems limit HC emissions and are equipped with an activated carbon canister, in which a vent line from the fuel canister ends.
  • the activated carbon retains the fuel vapor and only allows the air to escape into the environment, which at the same time ensures pressure equalization.
  • a further line leads from the activated carbon container to an intake pipe, in which a vacuum is created during engine operation, which causes air from the environment to flow through the activated carbon into the intake pipe.
  • the temporarily stored fuel vapors are entrained and burned in the engine.
  • the regeneration flow is metered in the line to the intake pipe by a valve device of the type mentioned at the outset.
  • the regeneration stream is an air-fuel mixture, the composition of which consists of air enriched with fuel vapor. Because of its composition, which cannot be measured, or can be measured only with great difficulty, the regeneration current for the lambda control represents a considerable disturbance, since the specific density of fuel vapor is also approximately twice as high as that of air.
  • the valve device is therefore controlled so that the activated carbon canister is rinsed sufficiently and the lambda deviations 2 are as minimal as possible.
  • the regeneration valve is closed at regular intervals so that the mixture adaptation can work independently of the tank ventilation.
  • a valve device according to the preamble of claim 1 is disclosed in DE 297 17 078 Ul.
  • an electromagnetically actuated armature is connected to a disk-shaped closing body, by means of which a free cross-sectional area between an inflow nozzle and an outflow nozzle can be changed continuously from a sealing position to a maximum position.
  • the closing body is formed from a sealing washer with a through opening, which rests on a sealing seat of the outflow connector.
  • the sealing washer is pressed against the sealing seat by means of a spring with a low contact pressure, so that the sealing washer lies sealingly against it, but remains movably mounted.
  • the spring is guided by pins on the sealing washer on the one hand and on a sieve in the inflow neck on the other.
  • the spring must also pass through the valve stroke, so that it exerts unwanted transverse forces on the sealing seat due to its deformation in a direction radially to its longitudinal axis. In addition, this can cause the sealing washer to jam in its intended holder, and there are tightness problems at the sealing seat of this tank ventilation valve.
  • the limited vertical stroke of the electromagnetic actuating device limits the maximum flow through the valve device.
  • valve device for tank ventilation is known from DE 195 40 021 AI.
  • the closing body is actuated by the lifting movement of an electromagnet.
  • the electromagnet is controlled by means of a pulse-width-modulated excitation current.
  • the maximum flow through the valve device is therefore limited by the maximum opening stroke of the electromagnet.
  • the valve devices known from DE 297 17 078 Ul and DE 195 40 021 AI are therefore only suitable to a limited extent for these applications.
  • the valve device according to the invention with the characterizing features of claim 1 has the advantage that even large flow rates through the valve device can be measured precisely and continuously. Because the sealing washer is not subjected to a translational movement but a rotary movement 3, there is a much larger variation range of the opening cross section. Both small opening cross sections and large opening cross sections can be set reliably and reproducibly with the valve device according to the invention. Due to the low moment of inertia of the sealing washer, the opening and closing times are nevertheless relatively short. The opening cross-section can be set with relatively high accuracy using the angle of rotation of the sealing washer.
  • a single, elongated through-opening can be provided in the sealing disk, the radial width of which widens as the angle of rotation of the sealing disk increases.
  • the advantage of this design is the stepless adjustability of each opening cross section of the valve device.
  • a plurality of through openings with different opening cross sections can be arranged offset to one another in the sealing disk.
  • the positions of the individual through openings can be set quickly, in particular with a stepper motor.
  • the advantage of this training is the high reproducibility of the individual opening cross-sections. It is advantageous if the through openings have a constant offset angle to one another, so that the individual positions of the different through openings can be approached in a simple manner, in particular with a stepper motor.
  • the actuating device in particular an electric motor encompassed by the actuating device, can directly drive the sealing disk in accordance with a simple and inexpensive design.
  • a drive gear which is formed in a simple manner by a drive wheel which has a toothing which meshes with a toothing of the sealing disk.
  • a suitable step-up and step-down There is also the possibility of a suitable step-up and step-down.
  • the sealing washer is preferably arranged almost free of play in the radial direction and movable in the axial direction and is held axially in contact with the sealing seat by means of a spring.
  • This has the advantage that manufacturing tolerances of the sealing washer and the sealing seat can be compensated for, so that there is a reliable sealing of the sealing seat.
  • the spring preferably rotates with the sealing washer, so that there is no radial relative movement between the spring and the sealing washer. Consequently 4, the danger of the spring becoming caught or of disturbances in the movement sequence caused by friction effects are avoided.
  • FIG. 1 shows a longitudinal section through a first embodiment of a valve device according to the invention
  • Fig. 2 is a plan view of the sealing washer of an inventive
  • Fig. 3 is a plan view of the sealing washer of an inventive
  • Fig. 4 is a partial section through an inventive
  • Fig. 5 is a plan view of the sealing washer and a drive wheel according to the embodiment shown in Fig. 4.
  • valve device 1 shown in longitudinal section in FIG. 1 is used, for example, for the metered introduction of volatilized from an unillustrated fuel tank, in particular a mixture-compressed, spark-ignition internal combustion engine
  • valve device 1 is part of a fuel evaporation retention system of the internal combustion engine.
  • the valve device has a valve housing consisting of two parts.
  • the upper housing part 2 in FIG. 1 serves to accommodate an actuating device which, in the exemplary embodiment shown, comprises an electric motor 3, preferably in the form of a stepping motor.
  • a drive shaft 4 of the electric motor 3 is mounted in the upper housing part 2 and preferably also in the lower housing part 5 concentrically with an axis of rotation 6.
  • the connector 7 is provided, which is used to connect the electric motor 3 with an electrical control unit.
  • the connector 7 has corresponding contact pins 8.
  • the two housing parts 2 and 7 can, for. B. be produced by means of a plastic injection molding process, the housing connector 7 being molded onto the upper housing part 2.
  • an inflow 9 which in the above application z. B. is connected via a piece of hose to the fuel tank, and an outflow nozzle 10, which is also connected to the intake pipe of the internal combustion engine, for example, also via a piece of hose in the above application.
  • a guide ring 11 is provided on the lower housing part 5, which serves to receive a cylindrical section 12 of the upper housing part 2.
  • the medium flowing through the valve device 1 according to the invention first passes through the tubular inflow nozzle 9 to a z. B. flat filter 13.
  • Abströmstutzen 10 trained sealing seat 16 is held by a spring 17 in sealing contact.
  • the spring 17 is between the
  • Sealing between the sealing disk 15 and the sealing seat 16 is ensured and, on the other hand, the mobility of the sealing disk 15 in the direction of rotation is not restricted.
  • the sealing disk 15 is arranged so as to be movable about the axis of rotation 6 and is non-positively connected to the drive shaft 4.
  • the sealing disk 15 can also be formed in one piece with the drive shaft 4 and connected to an output shaft of the electric motor 3 by means of a suitable coupling piece.
  • the direction of flow of the medium flowing through the valve device is indicated by arrows for better illustration of the invention.
  • the sealing seat 16 In the rest position of the valve device 1 according to the invention shown in FIG. 1, the sealing seat 16 is closed by the sealing disk 15.
  • a through opening 19a that is recognizable in the vicinity of the sealing seat 16 is located outside the opening 20 surrounded by the sealing seat 16 and in particular outside the sectional plane shown in FIG. 1.
  • the through opening 19 a is therefore drawn in dashed lines in FIG. 1.
  • Sealing disk 15 the through opening 19a or another through opening 19b-19k provided on the sealing disk 15 is rotated such that it overlaps with the opening 20 surrounded by the sealing seat 16 and thus a passage between the recess
  • Outflow nozzle 10 is therefore defined by the cross section of the through opening 19a-19k which is made to overlap by rotating the sealing disk 15 with the opening 20 surrounded by the sealing seat 16.
  • FIG. 2 is a top view of the sealing washer
  • FIG. 2 a plurality of through openings 19a-19k arranged offset from one another are provided in the sealing disk 15.
  • the through-openings 19a-19k each have a circular cross-section in the exemplary embodiment shown, the diameter of the through-openings 19a-19k continuously increasing with increasing angle of rotation ⁇ of the sealing disk 15 compared to a rest position designated by reference number 30.
  • the through opening 19f opposite the rest position 30 can be seen in FIG.
  • the center points of the circular through openings 19a to 19k are arranged offset on one another on a circular line 31 whose center coincides with the axis of rotation 6.
  • the center points of the through openings 19a to 19k are preferably offset from one another with a constant offset angle on the circular line 31.
  • the constant offset angle is 30 °.
  • no through opening is provided, so that in the rest position the connection between the inflow connection 21 and the outflow connection 22 is interrupted by the sealing washer 15.
  • the sealing disk 15 When the sealing disk 15 is rotated by the actuating device comprising an electric motor 3 in the form of a stepping motor in the exemplary embodiment, one of the through openings 19a-19k of the sealing disk 15 is brought into overlap with the opening 20 surrounded by the sealing seat 16.
  • the actuating device comprising an electric motor 3 in the form of a stepping motor in the exemplary embodiment
  • the sealing seat 16 and the opening 20 surrounded by the sealing seat 16 for the rest position 30 are shown in FIG. 2.
  • the step size of the electric motor designed as a stepper motor is 30 ° in the exemplary embodiment, so that in each case one of the through openings 19a-19k is reproducibly brought into overlap with the openings 20 surrounded by the sealing seat 16. Every step of the 7
  • Electric motor 3 is assigned to a through opening 19a-19k with an increasing opening cross-section in the direction of rotation, so that the opening cross-section of valve device 1 can be adjusted simply and reproducibly by specifying the step size of electric motor 3 designed as a stepping motor.
  • the sealing washer 15 is z. B. by means of a groove 32 rotatably and almost free of play with the drive shaft 4.
  • FIG. 3 An alternative embodiment of the sealing disk 15 is shown in FIG. 3.
  • the exemplary embodiment shown in FIG. 3 differs from the exemplary embodiment shown in FIG. 2 in that instead of a plurality of through openings 19a-19k arranged offset with respect to one another with a different opening cross section, a single through opening 34 is provided, the radial width a of which increases with increasing angle of rotation ⁇ the rest position 30 enlarged.
  • the elongated through opening 34 extends only over an angular range of approximately 90 °.
  • the advantage of the embodiment shown in FIG. 3 is that the overlap area which forms the through opening 34 of the sealing washer 15 with the opening 20 surrounded by the sealing seat 16 can be adjusted continuously or in fine raster steps when using a finely rastering stepping motor.
  • the sealing disk 15 is connected to the drive shaft 4 almost without play in the direction of rotation. However, it is advantageous to arrange the sealing disk 15 so that it can move in the axial direction within certain limits, so that the sealing disk 15 can be pressed against the sealing seat 16 by the spring 17 in the manner already described and a reliable sealing of the sealing seat 16 results.
  • valve device 1 shows a further exemplary embodiment of the valve device according to the invention.
  • the valve device 1 is only partially shown in FIG. 4 to the extent that changes compared to the exemplary embodiment already described with reference to FIG. 1 are affected. Elements which have already been described are provided with the same reference numerals, so that a repetitive description is unnecessary.
  • the sealing disk 15 is actuated by the actuating device, ie in the exemplary embodiment by the electric motor 3, 8 not driven directly but indirectly.
  • the drive shaft 4 is therefore not arranged coaxially to the axis of rotation 6 of the sealing disk 15, but offset to it.
  • the electric motor 3 first drives a drive wheel 40 via the drive shaft 4 mounted in the lower housing part 5.
  • the sealing disk 15 and the drive wheel 40 are shown in a top view for better illustration in FIG. 5.
  • both the drive wheel 40 and the sealing disk 15 each have a toothing 41 or 42, which mesh with one another, at least over part of their circumference.
  • the drive of the drive wheel 40 therefore causes the sealing disk 15 to rotate in the opposite direction of rotation.
  • the sealing disk 15 is designed in accordance with the exemplary embodiment shown in FIG. 3 and has an elongated through-opening 34, the radial width a of which widens as the angle of rotation ⁇ of the sealing disk 15 increases.
  • a sealing washer 15 corresponding to the exemplary embodiment shown in FIG. 2 with the exemplary embodiment of FIG. 4 and also to drive this sealing washer 15 indirectly.
  • the medium flowing through the valve device 1 enters the valve device 1 via the inflow connection 21, the inflow connection piece (not shown further) in the embodiment shown in FIG. 4 extending perpendicular to the plane of the drawing.
  • the direction of flow of the medium is again indicated by arrows for better illustration.
  • the flowing medium first passes through the filter 13.
  • Through openings 43 are provided in the drive wheel 40.
  • further through openings 44 are provided in the sealing disk 15, which in this area cause an unimpeded passage of the flowing medium through the sealing disk 15 and the drive wheel 40 in the inflow direction. In contrast to the through opening 34, the through openings 44 therefore do not interact with the sealing seat 16.
  • the through openings 44 could possibly also be omitted if the number of through openings 43 in the drive wheel 40 is sufficient.
  • the flowing medium could also be guided in the flow direction in a different way than through the drive wheel 40 and the sealing disk 15.
  • the through openings 43 and 44 also contribute to a reduction in the moment of inertia of the drive wheel 40 and the sealing washer 15, as a result of which the response behavior, ie the opening time and the closing time, of the valve device 1 is improved.
  • the sealing seat 16 While the sealing seat 16 is closed in the basic position shown in FIG. 4, the sealing seat 16 is opened with increasing rotation of the sealing disk 15.
  • the spring 17 is clamped between the sealing disk 15 and a spring plate 46.
  • the spring plate 46 is fastened to a spar 45 which is arranged coaxially with the axis of rotation 6 of the sealing disk 15.
  • the spar 45, the spring plate 46 and the spring 17 therefore rotate with the sealing disc 15. Due to the co-movement of the spring 17, the risk of the spring 17 getting caught and a disruption of the movement sequence due to friction effects are countered.
  • FIG. 4 has the advantage over the simpler embodiment of FIG. 1 that the hysteresis of the electric motor 3 can be minimized by the toothing. Furthermore, the angular velocity of the sealing disk 15 can be varied by a suitable step-up or step-down and thus the dynamic behavior of the valve device 1 can be adapted to the application.
  • valve device 1 is also suitable for metering very large maximum flow rates.
  • the relatively precise setting of the angle of rotation results in a relatively precise metering.
  • the control signal for the electric motor 3, which is preferably designed as a stepper motor, is comparatively simple compared to a pulse-width-modulated control signal, as is required for the control of the known valve device.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Electrically Driven Valve-Operating Means (AREA)
  • Lift Valve (AREA)

Abstract

L'invention concerne un système de robinet-vanne (1), servant en particulier à la mise à l'air libre de réservoirs de véhicules automobiles, qui comporte un corps (2, 5) présentant un raccord d'arrivée (21) et un raccord de sortie (22), ainsi qu'un siège de vanne (16) pouvant être fermé par une bague d'étanchéité (15). Un dispositif d'actionnement (3, 4) sert à actionner la bague d'étanchéité (15). Cette bague d'étanchéité (15) présente au moins une ouverture de passage (19a, 19f) qui, lors de l'actionnement par le dispositif d'actionnement (3, 4), chevauche une ouverture (20) entourée par le siège de vanne (16). La surface de section comprise entre le raccord d'arrivée (21) et le raccord de sortie (22) est donnée par la surface de chevauchement formée par l'ouverture de passage (19a, 19f) de la bague d'étanchéité (15) avec l'ouverture (20) entourée par le siège de vanne (16). La bague d'étanchéité (15) est montée de façon à pouvoir tourner autour d'un axe de rotation (6) et peut être déplacée par rotation par le dispositif d'actionnement (3, 4). La surface de chevauchement, formée par la ou les ouvertures de passage (19a, 19f) de la bague d'étanchéité (15) avec l'ouverture (20) entourant le siège de vanne (16), dépend de l'angle de rotation de la bague d'étanchéité (15) par rapport à sa position de repos (30).
EP98962238A 1998-02-21 1998-11-09 Systeme de vanne a obturateur Withdrawn EP0981706A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19807503 1998-02-21
DE19807503A DE19807503A1 (de) 1998-02-21 1998-02-21 Ventileinrichtung
PCT/DE1998/003283 WO1999042749A1 (fr) 1998-02-21 1998-11-09 Systeme de vanne a obturateur

Publications (1)

Publication Number Publication Date
EP0981706A1 true EP0981706A1 (fr) 2000-03-01

Family

ID=7858616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98962238A Withdrawn EP0981706A1 (fr) 1998-02-21 1998-11-09 Systeme de vanne a obturateur

Country Status (5)

Country Link
EP (1) EP0981706A1 (fr)
JP (1) JP2001525045A (fr)
KR (1) KR20000076220A (fr)
DE (1) DE19807503A1 (fr)
WO (1) WO1999042749A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TR200301852T4 (tr) 2002-02-19 2004-09-21 Festo Ag&Co. Kısma valfi
FR2852655B1 (fr) * 2003-03-18 2006-03-10 Gce Sas Installation de reglage de debit de distribution de fluides
US7201360B2 (en) * 2005-02-16 2007-04-10 Fisher Controls International, Llc. Pneumatic device having a selectively variable orifice
US7278444B2 (en) * 2005-02-22 2007-10-09 Mks Instruments, Inc. Valve assembly having improved pump-down performance
KR100826219B1 (ko) * 2006-09-04 2008-05-02 이윤분 솔레노이드 밸브
FR2910951B1 (fr) * 2006-12-28 2011-04-15 Brandt Ind Robinet d'alimentation en gaz
GB2454222B (en) * 2007-11-01 2010-06-30 Phs Group Plc Toilet flush control
DE102009047914A1 (de) * 2009-09-18 2011-03-31 E.G.O. Elektro-Gerätebau GmbH Rotorscheibe, Rotorscheibenventil und Ventileinrichtung
JP5960572B2 (ja) * 2012-10-15 2016-08-02 株式会社ミクニ ガス制御弁

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH281266A (de) * 1948-10-01 1952-02-29 Homann Werke Scheibengashahn für Heiz- und Kochgeräte.
GB1549789A (en) * 1977-01-20 1979-08-08 Paragon Plastics Ltd Water taps
FR2533631B1 (fr) * 1982-09-24 1988-01-29 Bourgeon Michel Dispositif de vanne mordulente pour l'admission regulee des gaz de petrole liquides gazeifies
US4643215A (en) * 1985-07-19 1987-02-17 Essex Industries, Inc. Gas flow control valve
DE3918192A1 (de) * 1989-06-03 1990-12-06 Kostal Leopold Gmbh & Co Kg Steuer- bzw. regelventil
DE19540021A1 (de) 1995-10-27 1997-04-30 Bosch Gmbh Robert Ventil zum dosierten Einleiten von aus einem Brennstofftank einer Brennkraftmaschine verflüchtigtem Brennstoffdampf
DE29717078U1 (de) 1997-09-24 1997-11-13 Robert Bosch Gmbh, 70469 Stuttgart Ventileinrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9942749A1 *

Also Published As

Publication number Publication date
KR20000076220A (ko) 2000-12-26
DE19807503A1 (de) 1999-08-26
JP2001525045A (ja) 2001-12-04
WO1999042749A1 (fr) 1999-08-26

Similar Documents

Publication Publication Date Title
DE3234468C2 (fr)
EP0776413B1 (fr) Soupape pour l'admission dosee de carburant vaporise
EP3012445B1 (fr) Dispositif de régulation pour un moteur a combustion interne
EP2728156B1 (fr) Dispositif de réglage pour un moteur à combustion interne
EP0986707B1 (fr) Soupape à coulisse
DE3943005A1 (de) Elektromagnetische einspritzventilvorrichtung
EP0914552A1 (fr) Vanne d'alimentation dosee en carburant volatilise
WO1992001862A1 (fr) Soupape de melange, en quantites dosees, d'un carburant volatilise a un melange air-carburant d'un moteur a combustion interne
WO2000012889A1 (fr) Soupape d'admission d'une dose de carburant volatilise
EP0981706A1 (fr) Systeme de vanne a obturateur
EP0731878B1 (fr) Dispositif de regulation du regime de ralenti d'un moteur a combustion interne
WO2017005557A1 (fr) Soupape de gaz
DE102012103311A1 (de) Ventilvorrichtung für eine Verbrennungskraftmaschine
EP3425190B1 (fr) Soupape
EP0358650B1 (fr) Dispositif de commande d'au moins une section transversale d'etranglement d'au moins une ouverture de commande
DE69302057T2 (de) Elektromagnetisches Kraftstoffdosier- und Kraftstoffzerstäubungsventil
DE10102776A1 (de) Vorrichtung zur Rückstellung eines Drehglieds
WO1988009435A1 (fr) Dispositif pour commander au moins une section d'etranglement sur au moins une ouverture de commande
DE3635310A1 (de) Verfahren und vorrichtung zum liefern von kraftstoff an einen motor
DE19607810A1 (de) Abgasrückführventil
DE3720207A1 (de) Stellventil fuer kuehler von heizungsanlagen fuer personenkraftfahrzeuge
EP1105641B1 (fr) Soupape d'admission de carburant
EP1121526A1 (fr) Soupape d'injection de carburant
EP2082126B1 (fr) Dispositif à soupape pour doser un agent d'écoulement
DE29717078U1 (de) Ventileinrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 20000228

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20010306