WO2015039955A1 - Système de transport de fluide - Google Patents

Système de transport de fluide Download PDF

Info

Publication number
WO2015039955A1
WO2015039955A1 PCT/EP2014/069439 EP2014069439W WO2015039955A1 WO 2015039955 A1 WO2015039955 A1 WO 2015039955A1 EP 2014069439 W EP2014069439 W EP 2014069439W WO 2015039955 A1 WO2015039955 A1 WO 2015039955A1
Authority
WO
WIPO (PCT)
Prior art keywords
delivery system
fluid
container
fluid delivery
pressure
Prior art date
Application number
PCT/EP2014/069439
Other languages
German (de)
English (en)
Inventor
Achim Koehler
Markus Majer
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 WO2015039955A1 publication Critical patent/WO2015039955A1/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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations

Definitions

  • the present invention relates to a fluid conveyor system comprising
  • High-pressure conveyor system with a high-pressure pump, which are connected via a supply line, and wherein the Fluidfordersystem comprises a pressure damper.
  • Such a fluid support system is known from DE 10 201 1 087 957 A1.
  • This fluid charging system is designed as a fuel delivery system of a common rail injection system for an internal combustion engine.
  • Fuel supply system has a low pressure conveyor system with a
  • Low pressure pump and a high pressure pumping system with a high pressure pump on are connected to each other via a connecting line. Furthermore, the high-pressure delivery system to a pressure damper, which is connected to a spur line. The stub line is with the
  • the invention has for its object to provide a Fluidfordersystem in which a pulsation of the fluid is damped.
  • Low-pressure conveyor system is arranged container, and that the container has a fluid space and a gas space. This embodiment is the
  • the pulsations can stimulate lines in the region of the low pressure conveyor system to vibrate, and thus cause noise nuisance. Due to the fact that now the fluid delivery system has a container which, in addition to the fluid space, has a gas space filled, in particular, with a medium other than the fluid, the pulsations of the fluid introduced into the container are damped. This is done on the one hand by the larger volume of the fluid space as the opening lines and on the other hand by the gas space.
  • the pressure damper is arranged in the supply line between the low-pressure pump and the high-pressure pump.
  • this feed line one or more filters is arranged, which would be heavily stressed by the pulsation of the fluid (s) and would significantly reduce the degree of separation of the at least one filter. This reduction is caused for example by a backwash in the filter. If multiple filters are placed in the trunk, this problem usually occurs with all filters.
  • the pressure damper is arranged in a return line from the high-pressure delivery system into the low-pressure delivery system.
  • This arrangement may be provided as an alternative or in addition to the arrangement in the feed line.
  • the pressure damper is inserted at a suitable location in the connecting line or the return line. In this case, the arrangement can also in the region of the connection of the connecting line or the return line to the
  • High-pressure conveyor system or the high pressure pump done may also be provided to integrate the pressure damper directly into the high pressure pump.
  • the gas space is filled with gas.
  • the gas is air. Air is compressible to a certain extent and is therefore particularly well suited for cushioning the Pulsations of the fluid. Furthermore, it is so often that a small amount of air is carried along by the fluid, which is then discharged into the gas space in the container. As a result, the air possibly flushed out of the gas space by the fluid is replenished or compensated for.
  • the fluid space and the gas space are separated from each other by means of a separating device.
  • This separator is in a further embodiment of the invention, for example, a membrane or a float. While the membrane is inherently elastic and flexible, the float is rigidly but movably disposed within the container. In both cases, pulsations introduced by the fluid into the container are transferred into the gas space and damped, on the other hand there is no thorough mixing of the fluid with the gas or the air in the gas space.
  • the container has at least one vertical longitudinal wall and two opposite horizontal transverse walls, wherein the at least one longitudinal wall is longer than each of the two transverse walls.
  • the thus elongated container is oriented vertically, in which case the gas space in the upper region and the fluid space in the lower region of the container are arranged.
  • a fluid inlet is a filling tube which dips into the container from above and traverses the gas space.
  • the fluid drain is at a suitable location in the container at geodetically low point, for example, in the bottom wall forming the bottom wall opening outflow pipe.
  • the container is cylindrical tube-shaped, which contributes to a cost-effective production and which, moreover, a space-saving installation is possible.
  • the container may, however, in principle also have a plurality of longitudinal walls, which are connected to each other in a suitable manner.
  • the container can be made of a metallic one
  • the filling tube can lead to the fluid space
  • the container is at least approximately square and has a projecting into the fluid space
  • the fluid conveyor system is a
  • Fuel delivery system and the fluid fuel are used in principle in any Fluidfordersystem, the preferred application is given in a fuel delivery system for an internal combustion engine.
  • This fuel delivery system is preferably part of a common rail injection system.
  • the container according to the invention is very inexpensive to implement and largely maintenance-free.
  • FIG. 1 shows a system diagram of a fuel delivery system with two optional installation options of a pressure damper
  • FIG. 2 shows a first variant of an embodiment of a pressure damper
  • FIG. 3 shows a second variant of an embodiment of a pressure damper
  • Figure 4 shows a third variant of an embodiment of a pressure damper
  • Figure 5 shows a fourth variant of an embodiment of a pressure damper.
  • FIG. 1 shows a fluid delivery system designed as a fuel delivery system for a common rail injection system.
  • the fuel delivery system has a
  • Low-pressure pump 2 with a pre-filter 3 and a check valve 5, a filter 4 and the above-mentioned components interconnecting supply line 6 has. Furthermore, the low pressure conveyor system includes a return line 7, which opens into the tank and which is also connected to fuel injectors, not shown, to dissipate leakage fuel. Furthermore, the return line 7 with the high pressure conveyor system,
  • the high-pressure pump 8 has a schematically illustrated Pump housing 9, in which a camshaft space 10 is formed.
  • the camshaft space 10 is connected to the supply line 6 and has a bearing 1 1 a, 1 1 b mounted camshaft 12, for example, as
  • Double camshaft is formed. With the camshaft 12, at least one high-pressure pump element cooperates, which essentially consists of a
  • Pump cylinder head formed pump cylinder which is part of the pump housing or is installed in this consists.
  • Pump cylinder moves up and down and promotes introduced into a pump working chamber 14 fuel via a high pressure line 15 in one
  • High-pressure accumulator 16 from which there stored under high pressure fuel from the fuel injectors for injection in associated
  • Combustion chambers of an internal combustion engine is removed.
  • the fuel fed into the camshaft space 10 is from a
  • Controlled metering unit 17 is admitted into the pump working chamber 14, while not required by the metering unit 17, for example, during idling of the internal combustion engine fuel is diverted via a shut-off valve 18 in the return line 7. Also with the return line 7, the bearings 1 1 a, 1 1 b are connected, through which a constant amount of fuel for lubrication from the camshaft space 10 is passed.
  • the high-pressure pump 8 may also have an electronic suction valve instead of the metering unit 17, which determines the amount of fuel admitted into the pump working chamber 14. In this case, eliminates the return line at this point.
  • the fuel is then sucked into the pump working chamber at zero delivery or low partial delivery (with a movement of the pump piston 13 from TDC to TDC) and pushed back into the inlet or the supply line 6 (during a movement of the pump piston 13 from BDC to TDC). This creates the critical pulsations to be damped.
  • a pressure damper is installed in the supply line 6 and / or the return line 7, a pressure damper is installed.
  • the pressure damper can be installed directly in the supply line 6 or the return line 7, or else be integrated into the pump housing 9 of the high pressure pump 8. It is expressly within the scope of the invention possible to install in each of the supply line 6 and the return line 7 each have an independent pressure damper, or to arrange either a pressure damper in the feed line 6 or the return line 7.
  • Figure 2 shows a first embodiment of a pressure damper in the form of a
  • Container 19 for example, as a cylindrical container with a cylindrical longitudinal wall 20 and transverse walls 21 a, 21 b in the form of a bottom and a lid.
  • the longitudinal wall 20 is arranged vertically and has a significantly longer extent than the transverse walls 21 a, 21 b, so that an elongated vertically arranged cylindrical container 19 results.
  • the container 19 but instead of the
  • cylindrical configuration also have a polygonal configuration.
  • a fluid inlet in the form of a dipping into the container 19 and an upper gas chamber 22 traversing filling tube 23, which in a below the gas space 22 is followed
  • the filling tube is connected to either the connecting line 6 or the return line 7. In the bottom forming the bottom
  • Transverse wall 21 b opens a drain pipe 25, which is connected either directly to the high pressure pump 8 or the further leading to the high-pressure pump 8 connecting line 6.
  • the exemplary embodiment according to FIG. 3 differs from the exemplary embodiment according to FIG. 2 in that here the gas space 22 and the
  • Fluid space 24 by a float 26 are separated from each other.
  • a membrane may be installed.
  • the float 26 prevents at least substantially and a membrane completely one
  • a filling tube 23 which is flared funnel-shaped to the fluid space 24.
  • the funnel-shaped extension 29 causes a reduction in the inflow velocity of the fuel into the fluid space 24, whereby surface turbulence is reduced. This measure also serves to reduce the fuel-air mixing.
  • the container 19 is enlarged by an approximately square configuration in such a way that a slowing down of the flow speed of the fuel in the container 19 is achieved.
  • the filling tube 23a opens as the drain pipe 25 also in the bottom wall forming the transverse wall 21 b. In order to achieve a clear deflection of the fuel flow in the container is a
  • Partition wall 27 is provided, which is provided between the filling tube 23 and the drain pipe 25.
  • a first partition wall 27 is provided, which is provided between the filling tube 23 and the drain pipe 25.
  • Membrane 28 separate the gas space 22 from the fluid space 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

La présente invention concerne un système de transport de fluide comprenant un système de transport basse pression avec une pompe basse pression (2) et un système de transport haute pression avec une pompe haute pression (8) qui sont reliés par une conduite d'alimentation (6), lequel système de transport de fluide présente un amortisseur de pression. Le système de transport de fluide selon cette invention permet d'amortir une pulsation du fluide. A cette fin, l'amortisseur de pression est un récipient (19) qui se trouve dans le système de transport basse pression et ce récipient (19) présente un espace pour fluide (24) et un espace pour gaz (22).
PCT/EP2014/069439 2013-09-19 2014-09-11 Système de transport de fluide WO2015039955A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310218878 DE102013218878A1 (de) 2013-09-19 2013-09-19 Fluidfördersystem
DE102013218878.1 2013-09-19

Publications (1)

Publication Number Publication Date
WO2015039955A1 true WO2015039955A1 (fr) 2015-03-26

Family

ID=51564637

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/069439 WO2015039955A1 (fr) 2013-09-19 2014-09-11 Système de transport de fluide

Country Status (2)

Country Link
DE (1) DE102013218878A1 (fr)
WO (1) WO2015039955A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218223A1 (de) * 2015-09-23 2017-03-23 Robert Bosch Gmbh Druckpulsationsdämpfer für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem
FR3044049B1 (fr) * 2015-11-25 2021-10-15 Renault Sas Dispositif amortisseur de pulsations d'alimentation en liquide d'un organe de vehicule

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905374A1 (fr) * 1997-09-25 1999-03-31 Mitsubishi Denki Kabushiki Kaisha Pompe à piston à haute pression pour injection de carburant avec amortisseurs de pulsation
EP1411236A2 (fr) * 2002-10-19 2004-04-21 Robert Bosch Gmbh Dispositif pour l'atténuation des pulsations de pression dans un système de fluide, en particulier dans un système de carburant d'un moteur à combustion interne
DE102007038426A1 (de) * 2007-08-14 2009-02-19 Robert Bosch Gmbh Kraftstoffeinspritzsystem
EP2273115A1 (fr) * 2003-10-01 2011-01-12 Robert Bosch GmbH Pompe à fluide, en particulier pompe à carburant haute pression, avec amortisseur de pression
DE102010053502A1 (de) * 2010-12-04 2012-06-06 Volkswagen Ag Fluid-Pulsationsdämpfer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011087957A1 (de) 2011-12-08 2013-06-13 Robert Bosch Gmbh Verfahren zum Lokalisieren eines Fehlverhaltens eines Fördersystem einer Brennkraftmaschine und Fördersystem einer Brennkraftmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905374A1 (fr) * 1997-09-25 1999-03-31 Mitsubishi Denki Kabushiki Kaisha Pompe à piston à haute pression pour injection de carburant avec amortisseurs de pulsation
EP1411236A2 (fr) * 2002-10-19 2004-04-21 Robert Bosch Gmbh Dispositif pour l'atténuation des pulsations de pression dans un système de fluide, en particulier dans un système de carburant d'un moteur à combustion interne
EP2273115A1 (fr) * 2003-10-01 2011-01-12 Robert Bosch GmbH Pompe à fluide, en particulier pompe à carburant haute pression, avec amortisseur de pression
DE102007038426A1 (de) * 2007-08-14 2009-02-19 Robert Bosch Gmbh Kraftstoffeinspritzsystem
DE102010053502A1 (de) * 2010-12-04 2012-06-06 Volkswagen Ag Fluid-Pulsationsdämpfer

Also Published As

Publication number Publication date
DE102013218878A1 (de) 2015-03-19

Similar Documents

Publication Publication Date Title
DE102006041213B4 (de) Einrichtung zur Kurbelraumentlüftung
DE102005040034B4 (de) Ölabscheider für einen Verbrennungsmotor
DE102017115682B3 (de) Zylinderkopfölabscheider für einen Verbrennungsmotor (Strömungsgeführter Ölabscheider)
DE102008044361A1 (de) Kraftstoffzuführsystem mit einem stormabwärts einer Förderpumpe installierten Kraftstofffilter
DE102008037350B4 (de) Kurbelgehäuseentlüftungssystem sowie damit ausgestatteter Verbrennungsmotor
DE102008000193B4 (de) Kraftstoffeinspritzpumpe
DE102016209423A1 (de) Hochdruckspeicher und Verfahren zur Herstellung eines Hochdruckspeichers
DE102007008672A1 (de) Zylinderkopfhaube für einen Verbrennungsmotor
WO2009021863A1 (fr) Système d'injection de carburant
WO2015039955A1 (fr) Système de transport de fluide
DE102017205124A1 (de) Kraftstoff-Hochdruckpumpe
DE102014223788A1 (de) Drucksteuereinrichtung insbesondere für eine ein Fluid fördernde Hochdruckpumpe
DE102013211147B4 (de) Niederdruckkreis einer Kraftstofffördereinrichtung eines Kraftstoffeinspritzsystems
EP3014119B1 (fr) Pompe
WO2017025241A1 (fr) Pompe à carburant haute pression
EP3353410B1 (fr) Amortisseur de pulsations de pression pour système d'injection de carburant et système d'injection de carburant
DE102010003517A1 (de) Kraftstofffördereinrichtung für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102014214886A1 (de) Doppeltwirkendes Rückschlagventil
DE102012207431A1 (de) Kraftstoffhochdruckpumpe
DE112016006785T5 (de) Selbstjustierendes Luftmanagementventil für eine Filterbaugruppe
DE202004004802U1 (de) Vorrichtung zum Rückführen von Öl
WO2014206608A1 (fr) Pompe
EP3047136B1 (fr) Système de transport de fluide pour un fluide
EP1435455A1 (fr) Elément amortisseur pour un accumulateur haute pression
DE102013213621A1 (de) Fluidfördersystem

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: 14766686

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: 14766686

Country of ref document: EP

Kind code of ref document: A1