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WO2017005572A1 - Soupape à gaz - Google Patents

Soupape à gaz Download PDF

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Publication number
WO2017005572A1
WO2017005572A1 PCT/EP2016/065121 EP2016065121W WO2017005572A1 WO 2017005572 A1 WO2017005572 A1 WO 2017005572A1 EP 2016065121 W EP2016065121 W EP 2016065121W WO 2017005572 A1 WO2017005572 A1 WO 2017005572A1
Authority
WO
WIPO (PCT)
Prior art keywords
armature
gas valve
valve according
opening
recess
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.)
Ceased
Application number
PCT/EP2016/065121
Other languages
German (de)
English (en)
Inventor
Thomas Zehetbauer
Bernd Winkler
Andreas Ploeckinger
Paul Foschum
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 WO2017005572A1 publication Critical patent/WO2017005572A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0251—Details of actuators therefor
    • F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0257—Details of the valve closing elements, e.g. valve seats, stems or arrangement of flow passages
    • F02M21/0272—Ball valves; Plate valves; Valves having deformable or flexible parts, e.g. membranes; Rotatable 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0248—Injectors
    • F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
    • 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
    • F16K1/36—Valve members
    • 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
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0635—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding
    • F02M51/0639—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a plate-shaped or undulated armature not entering the winding the armature acting as a valve
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

Definitions

  • the invention relates to a gas valve for dosing a gaseous fuel in an intake tract of an internal combustion engine having the features of the preamble of claim 1.
  • a gas valve of the aforementioned type can be used in particular for supplying fuel to gas or gas-diesel engines in passenger cars or commercial vehicles, in rail vehicles and / or on ships.
  • Other possible appli cation represent gas or gas-diesel engines in plants for energy and / or energy production.
  • a gas valve emerges, which is designed in particular for use in a gas engine and serves to regulate a gas flow from an inflow side to an outflow side.
  • the gas valve has a valve housing, in which an actuating unit for a magnet armature is received, which is guided axially displaceably in the valve housing.
  • the magnet armature is provided with a valve closing member, on the front side of a sealing element is arranged, which cooperates with a valve seat formed on a seat plate such that a gas flow through outflow openings of the seat plate is controllable.
  • the sealing element is formed from a plastic provided with a filler.
  • the present invention has for its object to provide a wear-optimized gas valve, which is also very compact.
  • the gas valve is proposed with the features of claim 1.
  • the gas valve proposed for metering in a gaseous fuel into an intake tract of an internal combustion engine comprises an electromagnet and a lifting armature cooperating with the electromagnet, which is acted upon in the direction of a valve seat element in which at least one flow opening is formed by the spring force of at least one closing spring.
  • the armature is designed as a disk and has a sealing surface cooperating with the through-flow opening, so that the armature can also be used as a lifting-movable sealing element.
  • the anchor also has at least one
  • the height, d. H. the dimension in the axial direction of the gas valve can be reduced. Since the armature also forms the sealing element, a separate sealing element can be omitted. As a result, the height is further reduced.
  • the disc shape of the armature and the elimination of a separate sealing element lead to a reduction of the moving mass. This has the consequence that the impact energy of the armature when closing the flow opening is lower and the wear in the seating area is reduced.
  • the reduction of the moving mass is also associated with a reduced drive current consumption. In order to keep the closure low, is also a guide, centering and / or
  • the guide counteracts in particular a strong tilted position of the anchor and should thus prevent the anchor wedged.
  • the centering and / or rotation ensures that the sealing surface formed on the armature can be brought into overlap with the at least one flow opening of the valve seat member.
  • a central recess is provided in the armature, in which a dowel pin is received, which is fixed in position.
  • the anchor is centered and guided via the dowel pin.
  • the central recess can be designed as an axial bore with a circular cross-section. Such is easy and inexpensive to manufacture.
  • the cross section of the dowel pin is preferably adapted to the cross section of the recess in the anchor.
  • the recess provided in the armature and / or the dowel pin may or may also have a different cross-section from the circular shape. In this way, in addition to a guide and a centering further rotation of the anchor can be effected.
  • valve seat member To fix the position of the dowel this is preferably firmly connected to the valve seat member.
  • the armature may have at least one outer peripheral side recess and / or geometry and be surrounded by an annular body which is fixed in position. This means that the armature has a different outer contour from the circular shape.
  • the annular body surrounding the armature has, at least in regions, an inner contour adapted to the outer contour of the armature, so that the armature is at least guided and centered via the annular body.
  • a plurality of recesses and / or geometries are provided on the outer circumference of the armature, which further preferably at the same angular distance from each other, d. H. evenly distributed over the outer circumference, are arranged.
  • the at least one outer peripheral side recess of the armature is formed circular segment-shaped.
  • a recess is simple and inexpensive to produce, for example via a bevel or a flattening.
  • the recess may also be formed in a circular arc.
  • Such recesses can be produced due to the flat disc shape of the anchor in a favorable manner by water jet cutting.
  • the outer peripheral side recesses of the armature may be accompanied by the formation of outer peripheral side geometries, so that both recesses and geometries are formed on the outer circumference of the armature.
  • the recesses serve then primarily the exemption of the geometries.
  • the guide, centering and / or rotation is then preferably effected via the geometries.
  • a geometry formed on the outer circumference of the armature can, for example, have the shape of a tooth. Such a geometry is exempted when outer peripheral side in the armature circular segment-shaped recesses are introduced, which are not directly adjacent to each other. Between them then remains a geometry in the form of a tooth.
  • the tooth may have a radially outer surface over which a guide and centering of the armature is effected.
  • At least one geometry on the outer circumference of the armature is at the same time used to effect a security against rotation.
  • the geometry is for this purpose in engagement with the ring body.
  • a geometry can be formed on the annular body, which is in engagement with the recess of the armature, via which the geometry of the armature is released.
  • the at least one flow-through opening of the valve seat element extends radially or circularly.
  • a plurality of radial or circular arc-shaped flow openings are formed in the valve seat member in order to realize large mass flows can.
  • the angular position of the armature with respect to the valve seat element can be decisive for a Close the gas valve. This is not the case if the flow-through opening of the valve element runs in a circular arc.
  • the armature is centered with respect to the valve seat member.
  • a provided for centering dowel pin is therefore preferably firmly connected to the valve seat member.
  • At least one flow-through opening and / or pressure-equalizing opening is or are formed in the armature, which is or are arranged offset relative to the at least one flow-through opening of the valve seat element.
  • the gas is supplied to the throughflow opening formed in the valve seat element via the at least one throughflow opening provided in the armature.
  • several through-flow openings are provided in the armature.
  • Via the at least one pressure equalization opening a pressure compensation during an opening or closing movement of the armature is effected.
  • the offset relative to the flow opening of the valve seat element arrangement of the at least one flow opening or pressure equalization opening of the armature ensures that the gas valve closes tightly.
  • Another advantage is the fact that the moving mass is further reduced by the at least one flow opening and / or pressure equalization opening in the armature.
  • the electromagnet is received in a cup-shaped magnet housing, which preferably has at least one inflow opening.
  • the inflow opening should ensure a uniform distribution of the inflowing gas.
  • a plurality of inflow openings are preferably provided, which are arranged distributed uniformly over the circumference of the magnet housing.
  • the at least one inflow opening is formed as an exemption in an end face of the magnet housing facing the armature. Such an inflow opening is simple and inexpensive to produce.
  • the armature in the closing direction loading closing spring may be a helical compression spring which is centrally located and thus centrally loaded the anchor.
  • the closing spring is a wave spring, in particular a Smalley wave spring. Wave springs have several support points, which are evenly distributed over the circumference. This has the consequence that the anchor is evenly loaded and less prone to tipping.
  • the wave spring is arranged such that it surrounds the cup-shaped magnet housing at least partially. This means that the closing force of the closing spring acts radially on the outside, preferably in the region of the sealing surface. This in turn ensures a tight closing of the gas valve.
  • a wave spring as a closing spring and a plurality of decentralized helical compression springs can be provided as closing springs. These are preferably arranged at the same angular distance from each other to effect a uniform distribution of the closing force.
  • FIG. 1 shows a schematic longitudinal section through a first preferred embodiment of a gas valve according to the invention
  • FIG. 2 is a perspective view of the armature of the gas valve of FIG. 1,
  • FIG. 3 is a perspective view of a modified armature for a gas valve according to the invention.
  • FIG. 4a is a perspective view of an armature in combination with a
  • FIG. 4b is a plan view of the armature of Fig. 4a
  • FIG. 4c is a detail of Fig. 4b in an enlarged view
  • FIG. 5 shows a schematic longitudinal section through a second preferred embodiment of a gas valve according to the invention
  • 6 shows a schematic longitudinal section through a third preferred embodiment of a gas valve according to the invention
  • FIG. 7 shows a schematic longitudinal section through a fourth preferred embodiment of a gas valve according to the invention
  • Fig. 8 is a schematic longitudinal section through a fifth preferred embodiment of a gas valve according to the invention.
  • the gas valve shown schematically in Fig. 1 comprises an electromagnet 1 for acting on an armature 2, which is formed as a flat disc.
  • the armature 2 has a sealing surface 6, which can be brought to cover the gas valve in register with flow openings 4, which are formed in a plate-shaped valve seat member 3.
  • the armature 2 thus also forms a sealing element.
  • the armature 2 is acted upon in the direction of the valve seat member 3 by the spring force of a closing spring 5, which is designed here as a Smalley wave spring.
  • the Smiley wave spring is arranged radially outward with respect to a pot-shaped magnet housing 13, in which the electromagnet 1 is accommodated.
  • the magnet housing 13 has frontal reliefs which form inflow openings 15.
  • inflow openings 15 In the anchor 2 further flow openings 11 and pressure equalization openings 12 are provided, which also provide for a uniform distribution of the gas (see Fig. 2).
  • the gas valve is flowed radially on the housing side formed radial bores 14.
  • the electromagnet 1 To open the gas valve, the electromagnet 1 is energized. A magnetic field builds up whose magnetic force moves the armature 2 in the direction of the electromagnet 1. In this case, the armature 2 lifts off from the valve seat element 3 and releases the through-flow openings 4 formed in the valve seat element 3. To close the energization of the electromagnet 1 is terminated, the magnetic field breaks down and the armature 2 is returned to the spring position of the closing spring 5 in its initial position, the formed on the anchor sealing surface 6 closes the formed in the valve seat member 3 through-flow 4.
  • a central recess 7 is provided in the armature 2, in which a dowel pin 9 is received, which is fixed in position via the valve seat member 3.
  • dowel pin 9 of the armature 2 is guided and centered (see also Fig. 2).
  • An alternative embodiment of an armature 2 is shown in FIG. 3.
  • the guidance and centering on outside circumference formed geometries 8 is effected, which are arranged distributed uniformly over the outer circumference of the armature 2.
  • three circular-arc-shaped recesses 7 have been introduced into the outer circumference of the armature 2 so that three tooth-like geometries 8 remain between them.
  • the guidance and centering is effected via the radially outer surfaces of the geometries 8.
  • the flow openings 11 of the armature 2 are formed in the embodiments of FIGS. 2 and 3 each arcuate in shape. This is the case, in particular, if the flow-through openings 4 of the valve seat element 3 likewise extend in a circular arc.
  • FIGS. 4a to 4c show an alternative embodiment of an armature 2 and a valve seat element 3 serving as a sealing element.
  • the through-flow openings 4, 11 are each radially aligned.
  • the armature 2 must be secured against rotation relative to the valve seat member 3.
  • the recess 7 and / or the dowel pin 9 have a deviating from the circular cross-sectional shape. If the armature 2 has at least one geometry 8, it can be brought into engagement with a recess (not shown), which is preferably formed on an annular body 10 which surrounds the armature 2.
  • the gas valve shown in FIG. 5 is substantially similar to that of FIG. 1 with the difference that in the valve seat member 3, a plate 16 is inserted for receiving the dowel pin 9.
  • the magnet housing 13 is modified.
  • FIG. 6 shows an embodiment of a gas valve according to the invention, which, instead of a central recess 7 provided in the armature 2 for guiding and centering the armature 2, has a plurality of geometries 8 formed on the armature 2 on the outer circumference side. About these geometries 8, the armature 2 is located radially on the outside of an annular body 10, which surrounds the armature 2.
  • the closing spring 5 is a Smalley wave spring.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne une soupape à gaz servant à injecter de manière dosée un combustible gazeux dans une ligne d'admission d'un moteur à combustion interne. Cette soupape à gaz comprend un électroaimant (1) et une armature (2) à mouvement de va-et-vient coopérant avec l'électroaimant (1), laquelle armature est soumise à l'action de la force d'au moins un ressort de fermeture (5) en direction d'un élément de siège de soupape (3) dans lequel est ménagée au moins une ouverture de passage (4). Selon l'invention, l'armature (2) se présente sous la forme d'un disque et présente une surface d'étanchéité (6) coopérant avec l'ouverture de passage (4), de sorte que l'armature (2) peut servir également d'élément d'étanchéité à mouvement de va-et-vient, ladite armature (2) présentant au moins un évidement (7) et/ou un élément de géométrie (8) par l'intermédiaire duquel l'armature (2) est guidée, centrée et/ou bloquée en rotation.
PCT/EP2016/065121 2015-07-03 2016-06-29 Soupape à gaz Ceased WO2017005572A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015212476.2 2015-07-03
DE102015212476.2A DE102015212476A1 (de) 2015-07-03 2015-07-03 Gasventil

Publications (1)

Publication Number Publication Date
WO2017005572A1 true WO2017005572A1 (fr) 2017-01-12

Family

ID=56289509

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/065121 Ceased WO2017005572A1 (fr) 2015-07-03 2016-06-29 Soupape à gaz

Country Status (2)

Country Link
DE (1) DE102015212476A1 (fr)
WO (1) WO2017005572A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233529A (zh) * 2021-12-27 2022-03-25 营口理工学院 一种可控气流量的燃气电喷阀

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110312884B (zh) * 2017-01-19 2022-03-15 安德烈·斯蒂尔股份两合公司 电磁阀
DE102021212172A1 (de) 2021-10-28 2023-05-04 Robert Bosch Gesellschaft mit beschränkter Haftung Magnetventil

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675022A (en) * 1949-06-09 1954-04-13 Donald I Bohn Injection valve and actuating means therefor
US3422850A (en) * 1966-12-15 1969-01-21 Ranco Inc Electromagnetic fluid valve
GB1236062A (en) * 1967-06-13 1971-06-16 Gillett Tool Company Inc Electronically controlled fuel injection system for internal combustion engines
US5348233A (en) * 1993-03-01 1994-09-20 General Motors Corporation High volume gaseous fuel injector
EP1231378A2 (fr) * 2001-02-12 2002-08-14 Delphi Technologies, Inc. Injecteur de carburant électromagnétique avec un élément flexible pour le positionnement de l'armature
DE10353011A1 (de) 2003-11-13 2005-06-16 Robert Bosch Gmbh Ventil zum Steuern eines Fluids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2675022A (en) * 1949-06-09 1954-04-13 Donald I Bohn Injection valve and actuating means therefor
US3422850A (en) * 1966-12-15 1969-01-21 Ranco Inc Electromagnetic fluid valve
GB1236062A (en) * 1967-06-13 1971-06-16 Gillett Tool Company Inc Electronically controlled fuel injection system for internal combustion engines
US5348233A (en) * 1993-03-01 1994-09-20 General Motors Corporation High volume gaseous fuel injector
EP1231378A2 (fr) * 2001-02-12 2002-08-14 Delphi Technologies, Inc. Injecteur de carburant électromagnétique avec un élément flexible pour le positionnement de l'armature
DE10353011A1 (de) 2003-11-13 2005-06-16 Robert Bosch Gmbh Ventil zum Steuern eines Fluids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233529A (zh) * 2021-12-27 2022-03-25 营口理工学院 一种可控气流量的燃气电喷阀
CN114233529B (zh) * 2021-12-27 2023-10-10 营口理工学院 一种可控气流量的燃气电喷阀

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