[go: up one dir, main page]

WO2019219378A1 - Système fluidique et utilisation d'une soupape de presson bidirectionnelle - Google Patents

Système fluidique et utilisation d'une soupape de presson bidirectionnelle Download PDF

Info

Publication number
WO2019219378A1
WO2019219378A1 PCT/EP2019/061064 EP2019061064W WO2019219378A1 WO 2019219378 A1 WO2019219378 A1 WO 2019219378A1 EP 2019061064 W EP2019061064 W EP 2019061064W WO 2019219378 A1 WO2019219378 A1 WO 2019219378A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
pressure valve
pump
fluid line
injector
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/EP2019/061064
Other languages
German (de)
English (en)
Inventor
Stephan Mann
Dennis Unger
Chris Hands
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.)
Norma Germany GmbH
Original Assignee
Norma Germany 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 Norma Germany GmbH filed Critical Norma Germany GmbH
Publication of WO2019219378A1 publication Critical patent/WO2019219378A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/14—Indicating devices; Other safety devices
    • F01P11/20—Indicating devices; Other safety devices concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
    • F01N3/206—Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents
    • F01N3/2066—Selective catalytic reduction [SCR]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1433—Pumps
    • F01N2610/144—Control thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1486—Means to prevent the substance from freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1493—Purging the reducing agent out of the conduits or nozzle
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • 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
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a fluid system having at least one fluid line and a pump for filling and emptying at least a portion of the fluid line and the use of a bidi retechnischalen pressure valve in a fluid line of such a fluid system.
  • Fluid systems are used in a variety of ways, for example as coolant systems for removing heat or else for exhaust gas aftertreatment in motor vehicles.
  • coolant systems for removing heat or else for exhaust gas aftertreatment in motor vehicles.
  • liquid fluids there is the problem that they have a relatively high freezing point around 0 ° Celsius, whereby an increase in volume occurs during the freezing of the liquid. This increase in volume can lead to damage to components of the fluid lines and / or fluid connectors.
  • the invention is based on the object to provide a fluid system that enables reliable operation over a long period of time.
  • a bidirectional pressure valve is arranged behind the pump in an outlet direction in the fluid line.
  • a section is defined, from which the fluid is sucked out.
  • the volume of the fluid to be sucked off is kept so low. Accordingly, the volume to be delivered by the pump is lower and the time in which the pump is actuated by suction is relatively short.
  • the pressure valve is designed as a normally closed pressure valve.
  • the pressure valve is then securely closed and prevents backflow of the fluid.
  • a sufficient overpressure is generated which opens the pressure valve.
  • the pressure valve can thus work as a purely passive-acting valve, an additional control o. ⁇ . Is not required. The effort is therefore kept low.
  • the fluid system is arranged in a motor vehicle.
  • a motor vehicle In a motor vehicle, relatively high demands are placed on the service life of the components used, which at the same time may consume as little energy as possible.
  • motor vehicles are used at varying temperatures, so that the freezing of liquids is to be feared.
  • the fluid system is part of a system for exhaust aftertreatment for the reduction of nitrogen oxides, wherein the fluid line is connected at one end to an injector and the pressure valve between the injector and the pump is arranged.
  • the fluid system then serves to supply urea or urea, which serves for the reduction of nitrogen oxides.
  • relatively high volumes of urea must be supplied during the operation of an engine of the motor vehicle.
  • the fluid line has a heating element at least in sections.
  • a heating element for example, wrapped around the fluid conduit or disposed within the fluid conduit, allows relatively quick thawing of a fluid within the fluid conduit. This is especially necessary in connection with a system for exhaust aftertreatment.
  • the object mentioned at the outset is also achieved by the use of a bidirectional pressure valve in a fluid line of a fluid system of the type mentioned above, wherein according to the invention, when the motor vehicle stops, a fluid of the pump leaves behind a section of the fluid line facing away from the pump aspirated from the pressure valve and pumped in after an engine start.
  • the operating time of the pump for sucking off the liquid from the section of the fluid line, which is behind the pressure valve as seen from the pump can be kept so low, since only a relatively small volume has to be sucked off. Accordingly, freezing of fluid or liquid can be reliably prevented in this section with little effort. This is thus protected against damage.
  • a load on the pump is kept low, so that a long life of the pump can be expected.
  • the portion of the fluid conduit facing away from the pump terminates in an injector, wherein suction of the fluid is terminated when the portion between the pressure valve and the injector is emptied.
  • Fig. 1 shows a detail of a fluid system
  • Fig. 2 is a bidirectional pressure valve.
  • FIG. 1 shows a fluid system 1 comprising a fluid line 2 with a quick connector 3, which can be connected, for example, to a pump (not shown).
  • a bidirectional pressure valve 4 is integrated in the fluid line 2.
  • the pressure valve 4 prevents pressureless flow of a fluid, usually a water-containing liquid, through the fluid line. 2
  • the bidirectional pressure valve 4 is shown individually. It comprises a plastic housing with two housing parts 5, 6 and a membrane 7 arranged therein which, when a certain pressure is exceeded, releases a flow of the fluid in one or the other direction.
  • the housing parts 5, 6 are in particular welded together.
  • the pressure valve 4 can be welded to the fluid line 2 and the quick connector 3.
  • the fluid line 2 can also be connected directly to a pump.
  • the fluid to be delivered is preferably a hydrous liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Exhaust Gas After Treatment (AREA)

Abstract

L'invention concerne un système fluidique (1) comprenant au moins une conduite de fluide (2) et une pompe destinée à remplir et vider au moins une partie de la conduite de fluide (2). Dans la conduite de fluide (2), une soupape de pression bidirectionnelle (4) est disposée en aval de la pompe dans une direction de sortie. En outre, l'invention concerne l'utilisation d'une soupape de pression bidirectionnelle dans une conduite de fluide d'un système fluidique.
PCT/EP2019/061064 2018-05-14 2019-04-30 Système fluidique et utilisation d'une soupape de presson bidirectionnelle Ceased WO2019219378A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111474.5 2018-05-14
DE102018111474.5A DE102018111474B4 (de) 2018-05-14 2018-05-14 Fluidsystem und Verwendung eines bidirektionalen Druckventils

Publications (1)

Publication Number Publication Date
WO2019219378A1 true WO2019219378A1 (fr) 2019-11-21

Family

ID=66554325

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/061064 Ceased WO2019219378A1 (fr) 2018-05-14 2019-04-30 Système fluidique et utilisation d'une soupape de presson bidirectionnelle

Country Status (2)

Country Link
DE (1) DE102018111474B4 (fr)
WO (1) WO2019219378A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12006425B2 (en) 2020-08-13 2024-06-11 Borealis Ag Low filled automotive polypropylene composition containing recyclates

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404745A (en) * 1973-03-13 1975-09-03 Lateulere J A Pressure relief valve
DE102010016654A1 (de) * 2009-04-28 2010-11-04 Denso Corporation, Kariya-City Abgasreinigungssystem eines Verbrennungsmotors
US20110278775A1 (en) * 2010-05-14 2011-11-17 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Residual pressure holding valve and suspension strut
DE102011002427A1 (de) * 2011-01-04 2012-07-05 Robert Bosch Gmbh Doppelrückschlagventil zur bidirektionalen Durchflusskontrolle von gasförmigen und/oder flüssigen Medien sowie Verwendung des Doppelrückschlagventils
WO2016015792A1 (fr) * 2014-07-28 2016-02-04 Albonair Gmbh Système de dosage d'agent réducteur avec amortissement du transport d'agent réducteur
DE102015109691A1 (de) * 2015-06-17 2016-12-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Entlüftungsventil zur Verwendung in einem Kühlsystem eines Kraftfahrzeugs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015015714A1 (de) * 2015-12-07 2017-06-08 Albonair Gmbh Skalierbares Reduktionsmitteldosiersystem
DE102016205555A1 (de) * 2016-04-04 2017-10-05 Röchling Automotive SE & Co. KG SCR-Vorrichtung mit Ventilanordnung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1404745A (en) * 1973-03-13 1975-09-03 Lateulere J A Pressure relief valve
DE102010016654A1 (de) * 2009-04-28 2010-11-04 Denso Corporation, Kariya-City Abgasreinigungssystem eines Verbrennungsmotors
US20110278775A1 (en) * 2010-05-14 2011-11-17 Dr. Ing. H.C.F. Porsche Aktiengesellschaft Residual pressure holding valve and suspension strut
DE102011002427A1 (de) * 2011-01-04 2012-07-05 Robert Bosch Gmbh Doppelrückschlagventil zur bidirektionalen Durchflusskontrolle von gasförmigen und/oder flüssigen Medien sowie Verwendung des Doppelrückschlagventils
WO2016015792A1 (fr) * 2014-07-28 2016-02-04 Albonair Gmbh Système de dosage d'agent réducteur avec amortissement du transport d'agent réducteur
DE102015109691A1 (de) * 2015-06-17 2016-12-22 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Entlüftungsventil zur Verwendung in einem Kühlsystem eines Kraftfahrzeugs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US12006425B2 (en) 2020-08-13 2024-06-11 Borealis Ag Low filled automotive polypropylene composition containing recyclates

Also Published As

Publication number Publication date
DE102018111474A1 (de) 2019-11-14
DE102018111474B4 (de) 2021-09-16

Similar Documents

Publication Publication Date Title
EP1841956B1 (fr) Procede et dispositif pour le post-traitement de gaz d'echappement
EP2157295B1 (fr) Système de dosage pour un milieu liquide, notamment solution urée-eau
DE102014222463A1 (de) Vorrichtung zur Wassereinspritzung und Verfahren zum Betrieb einer solchen
EP1008746B1 (fr) Système d'injection de combustible
DE102016216235B4 (de) Vorrichtung zur wassereinspritzung in einem fahrzeug sowie verfahren zum betrieb einer solchen vorrichtung
DE102010031660A1 (de) Verfahren zum Betreiben eines Dosiersystems
WO2015055411A1 (fr) Soupape de limitation de pression pour système d'injection de carburant et système d'injection de carburant
DE102011082645A1 (de) Niederdruckkreislauf für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem
WO2019219378A1 (fr) Système fluidique et utilisation d'une soupape de presson bidirectionnelle
DE102012001369A1 (de) Verstellbare Hydropumpe
DE202011100991U1 (de) Medienleitung
DE102017214150A1 (de) Kraftstoffeinspritzsystem und Versorgungsanordnung
DE102010039103A1 (de) Dosiersystem sowie 3/2-Wegeventil für ein Dosiersystem
DE112016002669T5 (de) Kraftstoffsystem für einen Verbrennungsmotor
DE102016216366A1 (de) Dosiersystem für eine Abgasnachbehandlung einer Brennkraftmaschine
DE10162772B4 (de) Mediumfördervorrichtung
DE102019104405B4 (de) Kupplung zum Verbinden von Kühlkreislaufabschnitten, Kühlkreislauf mit einer solchen und Kraftfahrzeug mit einem solchen Kühlkreislauf
DE102020202666B3 (de) Wasserfördermodul
WO2011029657A9 (fr) Pompe d'alimentation à engrenages comprenant un arbre d'entraînement, une roue dentée menante et une roue dentée menée
WO2018121908A1 (fr) Ensemble réservoir pour véhicule
DE102011086022A1 (de) Fördermodul
DE102014201597A1 (de) Kraftstoffleitung für einen Niederdruckkreis eines Kraftstoffeinspritzsystems, Niederdruckkreis sowie Kraftstoffeinspritzsystem
DE102012221492B4 (de) Membranpumpe mit Exzenterantrieb und integriertem Absperrventil
DE102009033381A1 (de) Kraftstofftank mit einer Kühleinrichtung #
WO2019029881A1 (fr) Dispositif de réservoir pour système de post-traitement des gaz d'échappement

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: 19724360

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: 19724360

Country of ref document: EP

Kind code of ref document: A1