EP1727978B1 - Systeme d'injection de carburant a ondes de pression reduites dans la conduite de retour - Google Patents

Systeme d'injection de carburant a ondes de pression reduites dans la conduite de retour Download PDF

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Publication number
EP1727978B1
EP1727978B1 EP04729610A EP04729610A EP1727978B1 EP 1727978 B1 EP1727978 B1 EP 1727978B1 EP 04729610 A EP04729610 A EP 04729610A EP 04729610 A EP04729610 A EP 04729610A EP 1727978 B1 EP1727978 B1 EP 1727978B1
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EP
European Patent Office
Prior art keywords
pressure
fuel
valve
injector
holding valve
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.)
Expired - Lifetime
Application number
EP04729610A
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German (de)
English (en)
Other versions
EP1727978A1 (fr
Inventor
Patrick Mattes
Wolfgang Stoecklein
Holger Rapp
Hans Brekle
Markus Erhardt
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1727978A1 publication Critical patent/EP1727978A1/fr
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Publication of EP1727978B1 publication Critical patent/EP1727978B1/fr
Anticipated expiration legal-status Critical
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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
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0052—Details on the fuel return circuit; Arrangement of pressure regulators
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing pressure
    • 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
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/04—Fuel-injection apparatus having means for avoiding effect of cavitation, e.g. erosion
    • 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
    • F02M2200/28—Details of throttles in fuel-injection apparatus
    • 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
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • 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
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps

Definitions

  • the invention relates to a fuel injection system according to the preamble of claim 1.
  • the injector may be provided with an electrically operated solenoid valve that controls the injection process of the injector by varying the pressure in a control chamber.
  • the pressure maintenance valve may be relatively adjusted, for example to a pressure of 30 bar.
  • the injector is generally equipped with a hydraulic coupler which is actuated by a piezo actuator.
  • the hydraulic coupler is functionally surrounded by fuel, which is below the said pressure of about 30 bar, so that the hydraulic coupler is always functional.
  • the fuel return line may lead directly to the fuel tank of the internal combustion engine.
  • the connected to the injector end of the pressure holding valve line is connected to a connecting line between a fuel from the fuel tank to a moderate pressure of z. B. 5 bar lifting first pump and the input of a high-pressure pump.
  • the invention can be used in the above-mentioned systems.
  • the advantage of the fuel injection system according to the invention according to claim 1 is that a disadvantage recognized by the inventors is reduced or avoided. This disadvantage is due to the following operations: When the injector initiates an injection operation, a control amount flows into the leakage line upon actuation of the above-mentioned control valve and, during operation, causes the back pressure holding valve to open and substantially equal to the amount of control the pressure retention valve drains off.
  • the inflow of said control amount causes a flow surge into the leakage line and triggers a pressure wave back from the backpressure valve, which is reflected there when it opens as a vacuum wave (reflections of a pressure wave at an open end of a line or a pressure node in contrast to a pressure abdomen done as a vacuum wave) ,
  • a vacuum wave reflections of a pressure wave at an open end of a line or a pressure node in contrast to a pressure abdomen done as a vacuum wave
  • Such vacuum waves can lead to cavitation, which causes permanent damage to the injector and thereby reduces its life. Cavitation occurs when the vapor pressure of the fuel is exceeded. It is assumed that the lower the normal pressure in the leakage manifold and thus in the individual, the greater the risk of cavitation Leakage lines of the injectors is.
  • the throttle should be close to the pressure relief valve, it is understood that: the distance should not be so great as to interfere with the effect of the throttle on the suppression of negative pressure waves;
  • the throttle may be arranged in embodiments of the invention from the injector forth before the pressure holding valve, or behind this, or be structurally associated with the valve element of the pressure holding valve.
  • a slide is provided, which is preferably designed as a solid cylinder, and in a matching recess, in particular bore, against the force of a spring is displaceably guided and must be moved against this spring force, if from the leakage manifold Fuel should escape through the pressure holding valve.
  • at least one groove is incorporated in the wall of the cylinder, which is closed at rest of the pressure holding valve through the wall of the bore at its rear end and is open at its front end and at sufficiently far displaced cylinder with its rear end of the Out the area of the bore, so that the groove, which also forms a throttle, is generally continuous.
  • the solid cylinder without grooves in its wall instead of a groove is incorporated in the wall of the bore, which is suitably closed at rest of the valve at its front end of the cylinder surface of the cylinder, while its rear end is always free , and with sufficiently strong shifted cylinder becomes the front Free end of the groove, which also forms a throttle.
  • at least one of the above-mentioned grooves is present both in the wall of the cylinder and in the wall of the bore. It is understood that instead of a single groove and multiple grooves can be present.
  • the throttle by exchanging generally a single part or when selecting a suitable part in the assembly of the valve to the conditions prevailing in a particular fuel injection system and are generally known for each internal combustion engine , customize. Namely, it is the characteristic impedance of the throttle, or in the presence of multiple chokes the combination of such chokes (as explained a parallel connection of chokes, but also a series connection of such chokes is possible) to be adjusted in the right way.
  • a fuel injection system 1 which is provided in the example for diesel fuel, a number of known injectors 3 (in the example 6 injectors) in operation fuel through injection ports 5 (see Fig. 6 ) inject into the interior of a respective associated combustion chamber of a diesel engine.
  • An accumulator 7 is filled with fuel at high pressure (1600 bar in the example) via a line 8.
  • Fuel is supplied via a high-pressure line 9 to a high-pressure connection 10 of each injector 3.
  • Leakage amounts and control amounts of the injectors incurred in the operation of a control valve that controls the injection process of the injectors are supplied via a respective leakage line 11 from a low pressure port 12 of a leakage manifold 13 (Leckagerail).
  • the injectors 3 are those injectors which are controlled by an electrically operated solenoid valve which, when actuated in a known manner, lowers the pressure within a control chamber, thereby starting the injection process.
  • an electrically operated solenoid valve which, when actuated in a known manner, lowers the pressure within a control chamber, thereby starting the injection process.
  • this control valve opens, fuel exits from said control chamber and enters the leakage line 11.
  • In the leakage line 13 lead all leakage lines of the injectors shown.
  • One end of the leakage manifold 13 is closed, the other end, in Fig. 1 right, is connected via a pressure-holding valve 15 with a return line 17 for the fuel, and this return line 17 leads to the fuel tank. From the fuel tank fuel is sucked in a known manner and finally brought by one or more pumps to the high pressure with which the fuel is supplied to the pressure vessel 7.
  • the pressure-holding valve 15 opens in the example at an overpressure within the leakage manifold 13 against the pressure in the return line 17 of about 0.5 bar. This pressure of 0.5 bar serves to prevent the leakage lines from leaking. As far as the arrangement has been explained so far, it is known. New compared to the state of the art is in the in Fig. 1 shown arrangement that in the vicinity of the counter-holding valve 15, a throttle device 20 is provided which serves to prevent unwanted pressure wave reflections in the leakage manifold 13 largely.
  • Fig. 2 shows the in Fig. 1 provided combination of throttle device and back pressure holding valve as a structural unit 25.
  • the throttle device is formed by a single throttle 27, which is introduced in a suitably selectable during assembly block 28 as a bore.
  • the block 28 is in the flow direction of Fig. 1 , So from left to right, upstream of the back pressure holding valve arranged.
  • the assembly 25 is in the arrangement according to Fig. 1 mounted pressure-tight by screw connections.
  • FIGS. 2 and 3 may in embodiments of the invention in a completely similar manner by suitably connecting, for. B. screwing two separately manufactured parts, be realized, namely a component which contains only the throttle bore substantially, and a conventional back pressure holding valve.
  • the throttle and the back pressure holding valve form a unit which can not be separated from each other.
  • the valve assembly 40 opens again at a back pressure on in Fig. 4 left side opposite to the pressure on the Fig. 4 right side.
  • the valve arrangement is designed essentially as a slide valve.
  • a slide 41 solid cylinder
  • the slider 41 in a bore 42 of a central piece 43 against the force of a compression spring 44 is displaceable.
  • rest position of the slider 41 abuts against a stop device 45, which is formed by a perforated plate and does not hinder the flow of the fuel in total.
  • a longitudinal groove 47 is incorporated, which is open to the right, but to the left ends before the end of the slide 41, so that in the illustrated position of the slide 41 fuel from the left into the groove 47, which forms the throttle at the same time can occur.
  • the groove 47 is also free at its front end and there fuel can enter and flow through the groove 47, so that now the valve assembly is open. Functionally, one can see the throttle lying behind the valve opening.
  • a combination 50 of a valve with a throttle differs from the in Fig. 4 shown only in that the throttle 51 forming a groove is now arranged on the cylindrical outer surface of the slider 52, whereas the bore of the part 54 is smooth.
  • the groove 51 is always open to the left and its right end is only released for a flow through the groove when the slider 54 has moved sufficiently far to the right.
  • the throttle is lying in front of the valve opening.
  • both a groove 47 according to Fig. 4 , as well as a groove 51 according to Fig. 5 intended.
  • the two grooves must not overlap in the locked state of the valve assembly.
  • This embodiment of the valve assembly allows further actuation in such a way that no displacement of the cylinder is required to open the valve, but a rotation is possible, or in another embodiment, only a slight shift but in contrast a noticeable rotation. This would mean that the displacement movement per se does not lead to the release of the flow through the throttle, but the rotation coupled with the displacement, in which the throttling grooves come into an overlapping position.
  • the easiest way should be an operation by linear displacement.
  • an outflow also occurs because when the said valve is opened, a force acting on the valve piston, which releases and closes the injection openings with its lower end, additionally acts to force fuel out of the control chamber.
  • This opening of the control valve leads to a sudden increase in pressure in the leakage manifold.
  • This pressure increase opens the back pressure holding valve, which in the Fig. 1 and 2 to the right-facing terminal then forms an open line end, which reflects the incoming from the injector forth overpressure wave as a vacuum wave.
  • This reflection is mitigated by the throttle device and suppressed in a precisely fitting dimensioning of the throttle. For such a maximum suppression of the reflection, the following design is appropriate for the throttle:
  • the reflection-preventing effect of the throttle occurs when the (pressure-conducting) pressure-maintaining valve is open. When the pressure-retaining valve is locked, no fuel flows through the throttle.
  • the leakage manifold has a characteristic impedance of about 0.8 bar • ms / mm 3 .
  • the flow coefficient of the throttle has a value of 660 cm 3 / min at 100 bar differential pressure.
  • the in Fig. 2 provided single throttle, which is designed as a round bore, a diameter of about 0.4 mm.
  • the length of the restrictor, which in the example is 1 mm, is chosen for practical reasons; their length itself is less essential for functioning as a throttle.
  • the injector 3 has a stroke-controlled valve piston 60, the movement of which is controlled by the pressure in a control chamber 62. If this pressure is reduced by opening a (in the example electromagnetic) control valve 64, the valve piston 60 opens and fuel is injected via the injection openings 5 into the combustion chamber of a cylinder of the internal combustion engine.
  • a (in the example electromagnetic) control valve 64 the valve piston 60 opens and fuel is injected via the injection openings 5 into the combustion chamber of a cylinder of the internal combustion engine.
  • the fuel standing at a pressure suitable for the injection is supplied from an accumulator to the injectors.
  • the invention is also applicable to other fuel injection systems in which a control amount in the leakage line causes a surge in controlling the injection.
  • plants are known in which each cylinder is assigned its own pump nozzle unit (Unit Pump Injector). A pump of this unit may already be supplied with a certain fuel pressure, which is insufficient for the injection and is increased by the pump to the required injection pressure.
  • a control valve leading to a leakage channel is arranged in the injector or in the pump, which is blocked during the duration of the desired injection, so that the pump to the fuel can promote the injection openings.
  • the control valve When the control valve is opened, the pumped fuel from the pump is discharged to the leakage channel. Again, there is a pressure surge in the leakage line when opening the control valve, but also when the control valve is already open at the beginning of a pumping stroke.

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

Claims (5)

  1. Installation d'injection de carburant (1) pour un moteur à combustion interne, qui comprend :
    au moins un injecteur (3) pour l'injection de carburant dans une chambre de combustion du moteur, l'injecteur présentant un raccord haute pression (10) par le biais duquel il est alimenté en carburant à haute pression,
    une soupape de commande (64) pour commander les injections de l'injecteur, un raccord basse pression (12) de l'injecteur étant prévu pour évacuer une quantité de commande par le biais d'une conduite de fuite (11), la quantité de commande se formant lors de la commande des injections, la conduite de fuite (11) étant connectée à une conduite de retour de carburant (17) en interposant une soupape de maintien de pression (15) disposée derrière la conduite de fuite (11), vu dans la direction de retour du carburant, la soupape de maintien de pression s'ouvrant dans la direction de la conduite de retour de carburant lors du dépassement d'une pression prédéterminée,
    caractérisée en ce que
    l'on prévoit à proximité de la soupape de maintien de pression (15) un dispositif d'étranglement (20, 27, 47, 51), qui est réalisé et disposé de telle sorte que lorsque la soupape de maintien de pression est ouverte, une réflexion des ondes de pression provenant de l'injecteur en tant qu'ondes de dépression soit affaiblie, et en ce que plusieurs injecteurs sont prévus, dont les conduites de fuite (11) sont raccordées à chaque fois à un rail de fuite commun (13) qui est connecté au niveau d'une extrémité de rail à la conduite de retour de carburant (17), et en ce que la soupape de maintien de pression (15) et le dispositif d'étranglement (20, 27, 47, 51) sont disposés dans le rail de fuite (13) sur l'extrémité de rail connectée à la conduite de retour de carburant (17).
  2. Installation d'injection de carburant selon la revendication 1, caractérisée en ce que le dispositif d'étranglement est disposé, vu dans la direction d'écoulement depuis l'injecteur jusqu'à la conduite de retour de carburant, en amont de la soupape de maintien de pression.
  3. Installation d'injection de carburant selon la revendication 1, caractérisée en ce que le dispositif d'étranglement est disposé, vu dans la direction d'écoulement depuis l'injecteur jusqu'à la conduite de retour de carburant, en aval de la soupape de maintien de pression.
  4. Installation d'injection de carburant selon la revendication 1, caractérisée en ce que la soupape de maintien de pression est réalisée sous forme de soupape à tiroir avec un tiroir (41, 52) déplaçable à l'encontre d'une précontrainte sous l'effet de la surpression à évacuer, lequel tiroir glisse dans un guide, au moins une rainure (47, 51) étant prévue dans au moins l'un des éléments constitués par le tiroir et le guide de tiroir, et un passage pour le carburant dans une position du tiroir définie comme ouverte étant formé de telle sorte qu'une rainure pour le carburant soit perméable, tandis que dans la position de fermeture du tiroir, une extrémité de la rainure est fermée par la partie respective (guide de tiroir, tiroir) de la soupape à tiroir dans laquelle la rainure n'est pas prévue.
  5. Installation d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisée en ce qu'un canal formant une partie du dispositif d'étranglement est prévu dans une partie séparée pouvant être utilisée lors du montage de la soupape ou du dispositif d'étranglement.
EP04729610A 2003-06-21 2004-04-27 Systeme d'injection de carburant a ondes de pression reduites dans la conduite de retour Expired - Lifetime EP1727978B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10328000A DE10328000A1 (de) 2003-06-21 2003-06-21 Kraftstoffeinspritzanlage mit verringerten Druckschwingungen im Rücklaufrail
PCT/DE2004/000881 WO2005001280A1 (fr) 2003-06-21 2004-04-27 Systeme d'injection de carburant a ondes de pression reduites dans la conduite de retour

Publications (2)

Publication Number Publication Date
EP1727978A1 EP1727978A1 (fr) 2006-12-06
EP1727978B1 true EP1727978B1 (fr) 2010-12-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04729610A Expired - Lifetime EP1727978B1 (fr) 2003-06-21 2004-04-27 Systeme d'injection de carburant a ondes de pression reduites dans la conduite de retour

Country Status (6)

Country Link
EP (1) EP1727978B1 (fr)
JP (1) JP2006523793A (fr)
KR (1) KR20060028699A (fr)
AT (1) ATE492720T1 (fr)
DE (2) DE10328000A1 (fr)
WO (1) WO2005001280A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007239536A (ja) * 2006-03-07 2007-09-20 Denso Corp サプライポンプ
JP4793315B2 (ja) * 2006-07-20 2011-10-12 株式会社デンソー 燃料噴射装置
FR2923271A1 (fr) * 2007-11-07 2009-05-08 Renault Sas Dispositif d'injection de carburant.
US8539934B2 (en) 2008-04-10 2013-09-24 Bosch Corporation Injection abnormality detection method and common rail fuel injection control system
EP2249021A1 (fr) * 2009-05-06 2010-11-10 Delphi Technologies Holding S.à.r.l. Système de livraison de carburant
US8302622B2 (en) * 2010-02-24 2012-11-06 Continental Automotive Systems Us, Inc. Unbalanced inlet fuel tube for a fuel pressure regulator
JP2020143584A (ja) * 2019-03-04 2020-09-10 株式会社デンソー 圧力調整装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2890718B2 (ja) * 1990-07-12 1999-05-17 株式会社デンソー 燃料噴射装置の安全弁
EP0780569B1 (fr) 1995-12-19 2002-03-20 Nippon Soken, Inc. Dispositif d'injection de carburant avec accumulateur
JPH11257188A (ja) * 1998-03-10 1999-09-21 Hitachi Ltd 燃料リターンバルブ
GB9822653D0 (en) * 1998-10-17 1998-12-09 Lucas Ind Plc Fuel system
DE19927804A1 (de) * 1999-06-18 2000-12-28 Bosch Gmbh Robert Kraftstoffversorgungsanlage für eine Brennkraftmaschine
DE19952513A1 (de) * 1999-10-30 2001-06-07 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen mit konstantem Lecköldruck im Injektor
DE10046662B4 (de) * 2000-09-20 2004-09-30 Robert Bosch Gmbh Kraftstoffeinspritzventil mit einem Druckhalteventil
DE10157884B4 (de) * 2000-11-27 2013-05-08 Denso Corporation Druckspeicherkraftstoffeinspritzsystem zum Vermeiden eines Fehlverhalten eines Entlastungsventils, das durch Druckpulsation bewirkt wird
JP2002161829A (ja) * 2000-11-27 2002-06-07 Denso Corp 蓄圧式燃料噴射装置
JP2002235635A (ja) * 2001-02-13 2002-08-23 Denso Corp 蓄圧式燃料噴射装置
DE10104634A1 (de) * 2001-02-02 2002-09-19 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen mit verbesserter Druckversorgung der Injektoren
JP2003021017A (ja) * 2001-07-10 2003-01-24 Bosch Automotive Systems Corp 蓄圧式燃料噴射装置
DE10157411A1 (de) * 2001-11-23 2003-06-26 Bosch Gmbh Robert Injektor zur Hochdruckeinspritzung von Kraftstoff
JP3786002B2 (ja) * 2001-12-14 2006-06-14 トヨタ自動車株式会社 内燃機関の高圧燃料供給装置

Also Published As

Publication number Publication date
ATE492720T1 (de) 2011-01-15
DE10328000A1 (de) 2005-01-13
JP2006523793A (ja) 2006-10-19
EP1727978A1 (fr) 2006-12-06
WO2005001280A1 (fr) 2005-01-06
DE502004012034D1 (de) 2011-02-03
KR20060028699A (ko) 2006-03-31

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