WO2018202345A1 - Dispositif de dosage servant à réguler un milieu gazeux - Google Patents

Dispositif de dosage servant à réguler un milieu gazeux Download PDF

Info

Publication number
WO2018202345A1
WO2018202345A1 PCT/EP2018/056290 EP2018056290W WO2018202345A1 WO 2018202345 A1 WO2018202345 A1 WO 2018202345A1 EP 2018056290 W EP2018056290 W EP 2018056290W WO 2018202345 A1 WO2018202345 A1 WO 2018202345A1
Authority
WO
WIPO (PCT)
Prior art keywords
controlling
gaseous medium
sleeve part
sleeve
dosing device
Prior art date
Application number
PCT/EP2018/056290
Other languages
German (de)
English (en)
Inventor
Jochen Wessner
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 WO2018202345A1 publication Critical patent/WO2018202345A1/fr

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
    • F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
    • F02M21/0206—Non-hydrocarbon fuels, e.g. hydrogen, ammonia or carbon monoxide
    • 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
    • F02M21/026—Lift valves, i.e. stem operated valves
    • F02M21/0263—Inwardly opening single or multi nozzle valves, e.g. needle valves
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M8/00—Fuel cells; Manufacture thereof
    • H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
    • H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
    • H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/50—Fuel cells
    • 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 metering device for controlling a gaseous medium, in particular hydrogen, for example for use in vehicles with fuel cell drive.
  • gaseous fuels are an alternative to conventional liquid fuels, especially hydrogen. at
  • the gas streams are not discontinuously controlled as in the injection of liquid fuel, but it is for example proportional valves used, which adjust an opening cross-section depending on a desired drive power.
  • the amount of hydrogen gas flow from the proportional valve to the fuel cell is adjustable by a stroke of an armature needle of the proportional valve. For precise adjustment and fine adjustment, precise adjustment of the hub of the anchor needle is necessary.
  • the proportional valve according to the invention for controlling a gaseous medium, in particular hydrogen has the advantage that the fine adjustment of the stroke of the armature needle takes place in a simple manner with a firmly integrated component, at the same time achieving a local adaptation of the material properties of the component to the function in the proportional valve becomes.
  • metering device for controlling a gaseous medium, in particular hydrogen a valve body, in which a cavity is formed. In the cavity, a lifting magnet armature device is arranged.
  • the metering device has a magnetic device, by means of which a magnetic force can be generated on the magnetic armature device and the magnetic armature device can be moved in a stroke.
  • the valve body comprises a sleeve, wherein the sleeve seals the magnetic device against the cavity and wherein the sleeve comprises a first sleeve part and a second sleeve part.
  • the hub of the anchor needle By using a sleeve fine adjustment of the hub of the anchor needle is possible. Furthermore, an optimal adaptation to the function in the metering device can be achieved by dividing the sleeve into a first sleeve part and a second sleeve part. Another advantage is the sealing of the magnet device from the cavity of the metering device. Thus, the magnetic device can not come into contact with the gaseous medium, in particular hydrogen, which would otherwise lead to wear and tear of the magnetic device.
  • the first sleeve part and the second sleeve part are made of different materials.
  • the first sleeve part and the second sleeve part can be adapted to the functional conditions at the respective position, depending on the spatial arrangement in the metering device.
  • the first sleeve part is made of a magnetic material, for example a ferritic steel. This is particularly useful when attaching the first sleeve member near a magnetic flux.
  • the second sleeve part is made of a weakly magnetic material, such as stainless steel.
  • the second sleeve part is particularly suitable for magnetic separation in the metering device.
  • first sleeve part and the second sleeve part are positively connected to each other, for example by a weld.
  • the first sleeve part surrounds a pole arranged in the cavity.
  • the magnet armature device comprises an anchoring needle and a magnet armature.
  • the magnet armature needle cooperates with a sealing element for opening and closing at least one passage opening.
  • a spring is arranged and the spring spring-loaded the armature needle in the direction of the sealing element. This ensures the sealing of the metering device when the solenoid is switched off, so that no hydrogen flow is possible.
  • the wall portion of the nozzle body comprises a recess, whereby the wall portion by a force from the outside in the axial direction is deformable such that the biasing force of the spring is adjustable. So can be compensated in a simple manner during operation fault tolerances in the manufacture of the metering device. By exerting a force on the wall portion, the biasing force of the spring can be increased and thus the stroke of the armature needle can be influenced.
  • the wall section is deformable so that the deformation stops even after the end of the force. This allows a precise adjustment of the metering without constructive redesign of the metering device.
  • the second sleeve part at least partially surrounds the magnet armature.
  • the metering device described is preferably suitable in a fuel cell arrangement for controlling a hydrogen supply to an anode region of a fuel cell. Advantages are the low pressure fluctuations in the anode path and a quiet operation.
  • a metering device for controlling a gas supply, in particular hydrogen to a fuel cell, are shown. It shows in 1 shows an embodiment of a metering device according to the invention with a sleeve in longitudinal section,
  • Fig. 2 shows the embodiment of the invention according to the invention
  • Fig.l shows an embodiment of the metering device 1 according to the invention in longitudinal section.
  • the metering device 1 has a valve body 2 with a cavity 3.
  • a magnetic device 7 is arranged on the valve body 2, wherein the magnetic device 7 comprises a magnetic coil 12 and a pole 22.
  • the pole 22 is arranged in the cavity 3 and is surrounded by a sleeve 21, wherein the sleeve 21 forms part of the valve body 2.
  • a magnet armature device 5 is further arranged, which comprises an anchoring needle 51 and a magnet armature 52.
  • the armature needle 51 and the sleeve 21 define a spring chamber 32, wherein the spring chamber 32 is formed as part of the cavity 3.
  • a spring 6 is arranged, which is supported on the one hand on a wall portion 10 of the sleeve 21 and on the other hand on a formed on the Ankernadel 51 spring plate 25.
  • the anchoring needle 51 has a first guide section 13 with a first seal 24 on the sleeve 21 and protrudes beyond the spring chamber 32 into a magnet armature space 33.
  • the armature space 33 is bounded by the valve body 2 and a second seal 26 at a second guide portion 14 of the armature needle 51 in the valve body 2 and is formed as part of the cavity 3.
  • the armature needle 51 is guided over the first seal 24 and the second seal 26 in the valve body 2.
  • In the magnet armature space 33 of the armature 52 is arranged.
  • the armature needle 51 protrudes in the region of the second guide section 14 beyond the magnet armature space 33 into an exit region 31, wherein the exit region 31 is formed as part of the cavity 3.
  • an outlet opening 91 is formed.
  • a closing element 8 is arranged, which is fixedly connected to the Ankernadel 51.
  • the closing element 8 has an elastic sealing element 15 at its end facing away from the anchoring needle 51.
  • the valve body 2 comprises a nozzle body 28, which has a passage opening 4, whereby the inlet region 92 can be connected to the outlet region 31.
  • a flat valve seat 16 is formed, which cooperates with the elastic sealing element 15 of the closing element 8, so that when the elastic sealing element 15 resting on the flat valve seat 16, the passage opening 4 is closed.
  • the valve body 2 of the metering device 1 is surrounded by a Kunststoffumspritzung 23 for protection against external influences.
  • the sleeve 21 comprises a first sleeve part 211 and a second sleeve part 212.
  • the first sleeve part 211 completely surrounds the pole 22, wherein the second sleeve part 212 partially surrounds the first sleeve part 211 Magnetic armature 52 surrounds.
  • the first sleeve part 211 and the second sleeve part 212 are inexpensively manufactured by means of a forming process and firmly connected to each other by a weld.
  • the first sleeve part 211 is made of a magnetic material, such as a ferritic steel. This favors the magnetic flux around the pole 22.
  • the second sleeve part 212 is made of a weakly magnetic material, for example stainless steel, so that a magnetic separation is made possible.
  • the wall section 10 of the first sleeve part 211 and the plastic extrusion coating 23 on the wall section 10 have an indentation 11 in an axial direction 34, so that a sleeve bottom section 213 of the first one can be actuated by a force from outside the metering device, for example by a tool or another component Sleeve part 211 can be deformed.
  • the force effecting a permanent deformation of the sleeve bottom portion 213 of the first sleeve part 211 is achieved.
  • the biasing force of the spring 6 can be flexibly adapted to the operating conditions of the metering device 1. Operation of the dosing device 1
  • the stroke of the closing element 8 can be adjusted via the height of the current at the magnetic coil 12. The higher the current intensity at the magnetic coil 12, the greater the stroke of the closing element 8 and the higher the gas flow in the metering device 1, since the force of the spring 6 is stroke-dependent. If the current is reduced at the solenoid coil 12, and the stroke of the closing element 8 is reduced and thus throttled the gas flow.
  • the magnetic force is reduced to the armature 52, so that the force is reduced to the closing element 8 by means of the armature needle 51.
  • the closing element 8 moves in the direction of the passage opening 4 and seals with the elastic sealing element 15 on the valve seat 16.
  • the gas flow in the metering device 1 is interrupted.
  • the inlet region 92 and the outlet region 31 can be interchanged so that a flow reversal takes place in the dosing device 1.
  • the metering device 1 according to the invention can be used, for example, in a fuel cell arrangement.
  • hydrogen can be supplied from a tank to an anode region of the fuel cell.
  • a flow cross-section of the passage opening 4 is changed such that a demand-oriented adjustment of the gas flow supplied to the fuel cell takes place continuously.
  • the metering device 1 for controlling a gaseous medium thus has the advantage that in this case the supply of the first gaseous medium and the metered addition of hydrogen into the anode region of the fuel cell by means of electronically controlled adjustment of the flow cross section of the passage opening 4 while controlling the anode pressure can be done much more accurately , As a result, the reliability and durability of the connected fuel cell are significantly improved, since hydrogen is always supplied in a superstoichiometric proportion. In addition, consequential damage, such as damage to a downstream catalyst can be prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne un dispositif de dosage (1) servant à réguler un milieu gazeux, en particulier de l'hydrogène, le dispositif de dosage comprenant un corps de soupape (2) dans lequel est formée une cavité (3), un dispositif noyau plongeur (5) à mouvement de va-et-vient étant disposé dans la cavité (3). Le dispositif de dosage comprend un dispositif magnétique (7) au moyen duquel une force magnétique sur le dispositif noyau plongeur (5) peut être produite et le dispositif noyau plongeur (5) peut effectuer un mouvement de va-et-vient. En outre, le corps de soupape (2) comprend une douille (21), la douille (21) réalisant l'étanchéité du dispositif magnétique (7) vis-à-vis de la cavité (3) et la douille (21) comportant une première partie (211) et une deuxième partie (212).
PCT/EP2018/056290 2017-05-05 2018-03-13 Dispositif de dosage servant à réguler un milieu gazeux WO2018202345A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017207580.5A DE102017207580A1 (de) 2017-05-05 2017-05-05 Dosiervorrichtung zum Steuern eines gasförmigen Mediums
DE102017207580.5 2017-05-05

Publications (1)

Publication Number Publication Date
WO2018202345A1 true WO2018202345A1 (fr) 2018-11-08

Family

ID=61691472

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/056290 WO2018202345A1 (fr) 2017-05-05 2018-03-13 Dispositif de dosage servant à réguler un milieu gazeux

Country Status (2)

Country Link
DE (1) DE102017207580A1 (fr)
WO (1) WO2018202345A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610080A (en) 1985-07-29 1986-09-09 Allied Corporation Method for controlling fuel injector lift
WO1997030280A1 (fr) * 1996-02-13 1997-08-21 Vialle Beheer B.V. Soupage de gaz
DE102008040550A1 (de) * 2008-07-18 2010-01-21 Robert Bosch Gmbh Verfahren zur Herstellung eines metallischen Verbundbauteils, insbesondere für ein elektromagnetisches Ventil
DE102010043614A1 (de) * 2010-11-09 2012-05-10 Robert Bosch Gmbh Proportionalventil zum Steuern eines gasförmigen Mediums sowie zugehöriges Betriebsverfahren
US20140175194A1 (en) * 2012-12-26 2014-06-26 Denso Corporation Fuel injection valve for internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4610080A (en) 1985-07-29 1986-09-09 Allied Corporation Method for controlling fuel injector lift
WO1997030280A1 (fr) * 1996-02-13 1997-08-21 Vialle Beheer B.V. Soupage de gaz
DE102008040550A1 (de) * 2008-07-18 2010-01-21 Robert Bosch Gmbh Verfahren zur Herstellung eines metallischen Verbundbauteils, insbesondere für ein elektromagnetisches Ventil
DE102010043614A1 (de) * 2010-11-09 2012-05-10 Robert Bosch Gmbh Proportionalventil zum Steuern eines gasförmigen Mediums sowie zugehöriges Betriebsverfahren
US20140175194A1 (en) * 2012-12-26 2014-06-26 Denso Corporation Fuel injection valve for internal combustion engine

Also Published As

Publication number Publication date
DE102017207580A1 (de) 2018-11-08

Similar Documents

Publication Publication Date Title
DE3802648C2 (fr)
DE102017212726B3 (de) Strahlpumpeneinheit zum Steuern eines gasförmigen Mediums
EP2118542A1 (fr) Microsoupape
WO2019037924A1 (fr) Soupape proportionnelle servant à réguler un fluide gazeux
WO2019020267A1 (fr) Soupape proportionnelle servant à réguler un fluide gazeux
DE102017210367A1 (de) Proportionalventil zum Steuern eines gasförmigen Mediums
WO2019137780A1 (fr) Soupape de dosage et unité pompe à jet pour réguler un fluide gazeux
WO2012101000A1 (fr) Injecteur muni d'un limiteur de débit
WO2019101415A1 (fr) Unité pompe à jet dotée d'une soupape de dosage pour la commande d'un milieu gazeux
EP1831541B1 (fr) Soupape de regulation de pression
EP3714347A1 (fr) Soupape de dosage et unité de pompe à jet pour la commande d'un milieu gazeux
DE102005046434B4 (de) Ventilmodul zum Zuführen insbesondere gasförmiger Medien an eine Brennkraftmaschine
DE102005043969B4 (de) Ventilvorrichtung zum Steuern eines Fluidstroms
DE102014217441A1 (de) Elektromagnetisch betätigbares Proportionalventil
WO2018202345A1 (fr) Dispositif de dosage servant à réguler un milieu gazeux
WO2019052717A1 (fr) Dispositif de dosage servant à réguler un fluide gazeux
WO2018233910A1 (fr) Vanne proportionnelle servant à réguler un flux de substance gazeuse
EP3610182B1 (fr) Soupape proportionnelle servant à commander un milieu sous forme gazeuse
EP3642516A1 (fr) Vanne proportionnelle servant à réguler un flux de substance gazeuse
WO2018233911A1 (fr) Vanne proportionnelle servant à réguler un flux de substance gazeuse
DE102004009461A1 (de) Ventil
DE102004009460A1 (de) Ventil
DE102004048604A1 (de) Ventil für insbesondere gasförmige Medien
DE102006052816A1 (de) Brennstoffeinspritzventil
DE102017216135A1 (de) Dosiervorrichtung zum Steuern eines gasförmigen Mediums

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18711886

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18711886

Country of ref document: EP

Kind code of ref document: A1