EP1296060B1 - Système d'injection de carburant pour un moteur à combustion interne - Google Patents

Système d'injection de carburant pour un moteur à combustion interne Download PDF

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Publication number
EP1296060B1
EP1296060B1 EP02018834A EP02018834A EP1296060B1 EP 1296060 B1 EP1296060 B1 EP 1296060B1 EP 02018834 A EP02018834 A EP 02018834A EP 02018834 A EP02018834 A EP 02018834A EP 1296060 B1 EP1296060 B1 EP 1296060B1
Authority
EP
European Patent Office
Prior art keywords
fuel
pump
pressure
fuel injection
injection device
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
EP02018834A
Other languages
German (de)
English (en)
Other versions
EP1296060A3 (fr
EP1296060A2 (fr
Inventor
Matthias Schmidl
Thomas Lettner
Robert Reitsam
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 EP1296060A2 publication Critical patent/EP1296060A2/fr
Publication of EP1296060A3 publication Critical patent/EP1296060A3/fr
Application granted granted Critical
Publication of EP1296060B1 publication Critical patent/EP1296060B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening

Definitions

  • the invention is based on a Fuel injection device for an internal combustion engine according to the preamble of claim 1.
  • Such a fuel injector is through the DE 198 53 103 A1 known.
  • This fuel injection device has a fuel storage and a High-pressure fuel pump, depending on the fuel Operating parameters of the internal combustion engine in the Fuel storage is promoted.
  • Pre-feed pump provided by the fuel from one Fuel tank to the suction side of High-pressure fuel pump is promoted.
  • Fuel metering device for controlling by the High-pressure fuel pump into the fuel tank subsidized fuel amount provided.
  • the Fuel metering device is between the Pre-feed pump and the high-pressure fuel pump arranged so that through this promoted by the feed pump and the suction side of the high-pressure fuel pump supplied Fuel quantity is set. From the pre-feed pump to much promoted fuel quantity is the suction side of the Pre-feed pump returned.
  • the fuel injection device with the Features according to claim 1 has the advantage that the drive power required for the prefeed pump can be reduced and that no strong warming of the Fuel occurs because the pre-feed pump only the required amount of fuel is promoted. Besides that is the metering device does not differ from that by the prefeed pump applied pressure and can therefore with less Effort to be sealed.
  • FIG. 1 shows a Fuel injection device for an internal combustion engine in a schematic representation according to a first Embodiment
  • Figure 2 the Fuel injection device according to a second Embodiment
  • Figure 3 the Fuel injection device according to a third Embodiment
  • Figure 4 the Fuel injection device according to a fourth Embodiment.
  • a Fuel injection device for an internal combustion engine shown for example a motor vehicle.
  • the Internal combustion engine is preferably a self-igniting Internal combustion engine and has one or more cylinders on.
  • the motor vehicle has a fuel tank 10 on, in the fuel for the operation of the Internal combustion engine is stored.
  • the Fuel injection device has a prefeed pump 12 on, through the fuel from the fuel tank 10 is conveyed to a high-pressure fuel pump 14.
  • the High-pressure fuel pump 14 delivers fuel in one Fuel storage 16, for example, tubular or in can be formed of any other shape. from Fuel tank 16 lead lines 18 to the Cylinders of the internal combustion engine arranged injectors 20th from.
  • an electrical Control valve 22 is arranged, through which an opening of the Injectors are controlled so as to fuel injection to effect by the respective injector 20 or a To prevent fuel injection.
  • the control valves 22 be by an electronic control device 23rd driven, by depending on Operating parameters of the internal combustion engine, such as For example, speed, load, temperature and more, the Time and duration of fuel injection by the Injectors 20 is determined.
  • From the injectors 20 introduces Return for unused fuel at least indirectly, for example via one for all injectors common line 24 in the fuel tank 10th back.
  • From the fuel reservoir 16 may also be a Return line 26 to the fuel tank 10, in a pressure relief valve 28 is arranged to prevent in the fuel tank 16 an inadmissible high pressure builds up.
  • the high-pressure fuel pump 14 is mechanically by the Internal combustion engine and thus proportional to the speed of Internal combustion engine driven.
  • the prefeed pump 12 can also mechanically by the internal combustion engine be driven, wherein for the high-pressure fuel pump 14 and the feed pump 12 a common drive shaft can be provided.
  • the prefeed pump 12 may alternatively also, for example, an electric motor drive exhibit.
  • the high-pressure fuel pump 14 is a radial piston pump trained and has several, for example three with even angular distance from each other Pump elements 30, each one through a Camshaft 32 driven in a lifting movement Pump piston 34, each having a Limit pump work space 36.
  • Pump piston 34 each having a Limit pump work space 36.
  • the pump working spaces 36 with the outlet the prefeed pump 12 and are connected to fuel filled, the pump workrooms 36 from Fuel storage 16 are separated.
  • the pump working spaces are 36 connected to the fuel reservoir 16 and from the outlet of the Pre-feed pump 12 disconnected.
  • a coarse filter 40th and this subordinate a fine filter 42 may be provided wherein the fine filter 42 additionally a water separator can have.
  • the Fuel meter 44 has an electrical, in particular electromagnetically actuated control valve 46 through which the flow from the fuel tank 10 is set to the feed pump 12.
  • the Fuel meter 44 is also by the Controlled control device 23, in such a way that the Pre-feed pump 12 promotes an amount of fuel and the High-pressure fuel pump 14 feeds, which in turn through the high-pressure fuel pump 14 under high pressure in the Fuel storage 16 is promoted to in the Fuel storage 16 a predetermined, from Operating parameters of the internal combustion engine dependent pressure maintain.
  • the inlet from the feed pump 12 to the Pump working spaces 36 of the high-pressure fuel pump 14th takes place via a flange or lines that have a Throttle 47 represent, by one of the pro Time unit flowing through fuel quantity dependent Pressure drop is effected.
  • Embodiment of the fuel injection device is parallel to the flange or the lines with the Throttle 47 a pressure valve 48 disposed through the an inlet 50 to the drive area of High-pressure fuel pump 14 with the camshaft 32 controlled becomes. If by the feed pump 12 of the predetermined Opening pressure of the pressure valve 48 is exceeded, so opens the pressure valve 48 and releases the inlet 50, so that fuel to the drive portion with the camshaft 32nd gets there and ensures adequate lubrication. Downstream of the pressure valve 48 is a throttle point 52 provided in the inlet, through which the flow through the Inflow is limited, so not too much fuel is branched off to the drive range of the high-pressure pump 14.
  • the inlet 50 can also over another throttle point 54 with the feed pump 12th be connected, over which the drive range of High-pressure fuel pump 14 a constantly open Has connection with the feed pump 12.
  • the Drive range of the high-pressure fuel pump 14 forms a relief area and this connection serves an amount of fuel through the pre-feed pump 12th due to possible leaks in the metering device 44, that is, if they are the flow from the Fuel tank 10 to the feed pump 12 not completely block, still funded fuel amount not to be supplied to the pump work spaces 36 and a adequate lubrication of the drive area of the To ensure high pressure fuel pump 14 even if due to low fuel consumption of Internal combustion engine by the high-pressure fuel pump 14 and the prefeed pump 12 actually promoted no fuel would need to be. This is for example in overrun the internal combustion engine of the case.
  • the high-pressure fuel pump 14, the feed pump 12, the Pressure valve 48, the inlet 50, the throttle point 52, the Throttle 54 and the fuel metering 44 are preferably combined to form a common structural unit.
  • the injectors 20 flowing back through the return 24 a fuel relatively low temperature.
  • Fuel consumption of the internal combustion engine has that of the Injectors 20 flowing back through the return 24 Fuel up a high temperature.
  • the pressure valve 48 is provided, the drive area is the High-pressure fuel pump 14 but also with fuel fed relatively low temperature, which coincides with the mixed by the return 24 incoming fuel, so that only a slight warming of the high-pressure fuel pump 14 occurs.
  • the throttle point 62 can in a Connection with a return to the fuel tank Be arranged as a relief area or in a Connection to the drive area of the high-pressure fuel pump 14 as a relief area, as in the first Embodiment is the case, or as in Figure 2 shown in a to the suction side of the feed pump 12 as Relief area recirculating connection 63. If a complete blockage of the flow from Fuel tank 10 to the feed pump 12 through the Fuel metering 44 is ensured, so can Connection with the throttle point 62 to a Relief area also eliminated.
  • Embodiment of the fuel injection device is provided that the drive region with the camshaft 32nd to a lubricating oil circuit 70 of the internal combustion engine is connected and lubricated in this way.
  • the Pressure valve 48 with the downstream throttle point 52nd is omitted.
  • the connection to a Relief area with the further throttle point 62 be provided in a connection 64 to a Return to the fuel tank 10 or in a Connection 63 to the suction side of the feed pump 12 is arranged can be.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (8)

  1. Système d'injection de carburant pour un moteur à combustion interne, comprenant :
    un accumulateur de carburant (16), une pompe haute pression à carburant (14) qui permet de l'acheminer dans l'accumulateur '16) en fonction de paramètres de fonctionnement du moteur à combustion interne,
    une pompe de pré-alimentation (12) qui permet d'acheminer le carburant d'un réservoir (10) vers le côté admission de la pompe haute pression (14),
    un système de dosage de carburant (44) pour en régler la quantité acheminée par la pompe haute pression (14) dans l'accumulateur (16), et
    au moins un injecteur (20) relié à l'accumulateur (16) pour injecter le carburant dans le moteur à combustion interne,
    caractérisé en ce que
    le système de dosage (44) est disposé entre le réservoir (10) et le côté d'admission de la pompe de pré-alimentation (12).
  2. Système d'injection de carburant selon la revendication 1,
    caractérisé en ce qu'
    le système de dosage (44) présente une soupape de régulation d'écoulement (46) actionnée électromagnétiquement.
  3. Système d'injection de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    entre la pompe de pré-alimentation (12) et la pompe haute pression (14), une liaison est dérivée vers une zone de décharge, dans laquelle une position d'étranglement (54 ; 62) est prévue.
  4. Système d'injection de carburant selon la revendication 3,
    caractérisé en ce que
    la position d'étranglement (54) est disposée dans une liaison (50) vers une zone d'entraínement (32) de la pompe haute pression (14) ayant la forme d'une zone de décharge.
  5. Système d'injection de carburant selon la revendication 3,
    caractérisé en ce que
    la position d'étranglement (62) est disposée dans une liaison (63) vers le côté admission de la pompe de pré-alimentation (12) ayant la forme d'une zone de décharge.
  6. Système d'injection de carburant selon l'une des revendications 1 à 5,
    caractérisé en ce que
    la pompe haute pression (14) présente une zone d'entraínement (32) qui peut être reliée, pour sa lubrification, à la sortie de la pompe de pré-alimentation (12) par l'intermédiaire d'une soupape de compression (48) s'ouvrant vers la zone d'entraínement (32).
  7. Système d'injection de carburant selon la revendication 6,
    caractérisé en ce qu'
    une position d'étranglement (52) dans une alimentation (50) vers la zone d'entraínement (32) est prévu en aval de la soupape de compression (48).
  8. Système d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    depuis l'au moins un injecteur (20), il est prévu un retour (24) vers le réservoir de carburant (10), ce retour (24) débouchant dans une zone d'entraínement (32) de la pompe haute pression (14) et étant dirigé de celle-ci vers le réservoir (10).
EP02018834A 2001-09-22 2002-08-23 Système d'injection de carburant pour un moteur à combustion interne Expired - Lifetime EP1296060B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10146740A DE10146740A1 (de) 2001-09-22 2001-09-22 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10146740 2001-09-22

Publications (3)

Publication Number Publication Date
EP1296060A2 EP1296060A2 (fr) 2003-03-26
EP1296060A3 EP1296060A3 (fr) 2004-05-12
EP1296060B1 true EP1296060B1 (fr) 2005-06-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP02018834A Expired - Lifetime EP1296060B1 (fr) 2001-09-22 2002-08-23 Système d'injection de carburant pour un moteur à combustion interne

Country Status (4)

Country Link
US (1) US6848423B2 (fr)
EP (1) EP1296060B1 (fr)
JP (1) JP4253484B2 (fr)
DE (2) DE10146740A1 (fr)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005059830B3 (de) * 2005-12-14 2007-05-03 Siemens Ag Einspritzanlage für eine Brennkraftmaschine
DE102006018164B3 (de) * 2006-04-19 2007-08-30 Siemens Ag Verfahren und Vorrichtung zur Steuerung einer Einspritzanlage für eine Brennkraftmaschine
DE102006039882B3 (de) * 2006-08-25 2007-12-20 Siemens Ag Einspritzanlage für eine Brennkraftmaschine und Brennkraftmaschine
DE102007004605A1 (de) 2007-01-30 2008-08-14 Siemens Ag Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine mit einer Hochdruckpumpe
DE102007039893A1 (de) 2007-08-23 2009-02-26 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102007039892A1 (de) 2007-08-23 2009-02-26 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102007056418A1 (de) 2007-11-23 2009-06-04 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102008055747A1 (de) 2008-11-04 2010-05-06 Continental Automotive Gmbh Verfahren und Vorrichtung zum Betreiben einer Einspritzanlage für eine Brennkraftmaschine
DE102008055935A1 (de) 2008-11-05 2010-05-12 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102009009618A1 (de) 2009-02-19 2010-09-02 Continental Automotive Gmbh Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine
US7861693B2 (en) 2006-02-15 2011-01-04 Continental Automotive Gmbh Injection system for an internal combustion engine, and internal combustion engine
DE102009037407A1 (de) 2009-08-13 2011-04-21 Continental Automotive Gmbh Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine
DE102009057403A1 (de) 2009-12-08 2011-06-09 Continental Automotive Gmbh Vorrichtung zum Betreiben einer Kraftstoffversorgungseinrichtung für eine Brennkraftmaschine
DE102009058841A1 (de) 2009-12-18 2011-06-22 Continental Automotive GmbH, 30165 Druckspeicher für eine Kraftstoffversorgungseinrichtung

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10247145A1 (de) * 2002-10-09 2004-04-22 Robert Bosch Gmbh Durchflussregeleinrichtung, insbesondere für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE10247564A1 (de) * 2002-10-11 2004-04-22 Robert Bosch Gmbh Verfahren zum Betreiben eines Common-Rail-Kraftstoffeinspritzsystems für Brennkraftmaschinen
JP3915718B2 (ja) * 2003-03-11 2007-05-16 株式会社デンソー 燃料供給ポンプ
JP4450211B2 (ja) * 2005-01-28 2010-04-14 株式会社デンソー 燃料供給装置
DE102005027851A1 (de) * 2005-06-16 2006-12-21 Robert Bosch Gmbh Kraftstoffeinspritzsystem für eine Brennkraftmaschine
JP4338742B2 (ja) * 2007-03-09 2009-10-07 三菱電機株式会社 内燃機関の高圧燃料ポンプ制御装置
DE102009028023A1 (de) * 2009-07-27 2011-02-03 Robert Bosch Gmbh Hochdruck-Einspritzsystem mit Kraftstoffkühlung aus Niederdruckbereich
JP5561859B2 (ja) * 2010-08-02 2014-07-30 ボッシュ株式会社 蓄圧式燃料噴射装置及び潤滑用燃料の温度調節方法
DE102010043923A1 (de) * 2010-11-15 2012-05-16 Robert Bosch Gmbh Niederdruckkreislauf für ein Kraftstoffeinspritzsystem sowie Kraftstoffeinspritzsystem
JP5459330B2 (ja) * 2012-01-31 2014-04-02 株式会社デンソー 燃料供給ポンプ
DE102020206493A1 (de) * 2020-05-25 2021-11-25 Hyundai Motor Company Kraftstoffpumpe für ein Flüssigkraftstoff-Einspritzsystem eines Kraftfahrzeugs

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US4643155A (en) * 1984-10-05 1987-02-17 Olin Corporation Variable stroke, electronically controlled fuel injection control system
EP0270720A1 (fr) * 1986-12-12 1988-06-15 Regie Nationale Des Usines Renault Pompe à débit variable
CH674243A5 (fr) * 1987-07-08 1990-05-15 Dereco Dieselmotoren Forschung
DE19549108A1 (de) * 1995-12-29 1997-07-03 Bosch Gmbh Robert System zur Kraftstoffhochdruckerzeugung für ein in Brennkraftmaschinen eingesetztes Kraftstoffeinspritzsystem
DE19618707C2 (de) * 1996-05-09 1998-12-17 Siemens Ag Verfahren und Vorrichtung zur Regelung eines Kraftstoffvolumenstromes
US6024064A (en) * 1996-08-09 2000-02-15 Denso Corporation High pressure fuel injection system for internal combustion engine
FR2763100B1 (fr) * 1997-05-09 1999-07-23 Magneti Marelli France By-pass de delestage pour pompe a injection directe a haute pression
DE19727785B4 (de) * 1997-06-30 2006-04-13 Robert Bosch Gmbh Mengenregelventil zur Steuerung von Flüssigkeiten
DE19810867C2 (de) * 1998-03-13 2000-02-24 Bosch Gmbh Robert Kraftstoffpumpen-Anordnung
DE19834120A1 (de) * 1998-07-29 2000-02-03 Bosch Gmbh Robert Kraftstoffversorgungsanlage einer Brennkraftmaschine
DE19853103A1 (de) 1998-11-18 2000-05-25 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen
EP1321663A3 (fr) * 2001-12-19 2003-07-02 Robert Bosch Gmbh Dispositif d'injection de combustible pour moteur à combustion interne

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1798409A2 (fr) 2005-12-14 2007-06-20 Siemens Aktiengesellschaft Système d'injection de carburant pour un moteur à combustion
DE102005059830B3 (de) * 2005-12-14 2007-05-03 Siemens Ag Einspritzanlage für eine Brennkraftmaschine
US7861693B2 (en) 2006-02-15 2011-01-04 Continental Automotive Gmbh Injection system for an internal combustion engine, and internal combustion engine
DE102006018164B3 (de) * 2006-04-19 2007-08-30 Siemens Ag Verfahren und Vorrichtung zur Steuerung einer Einspritzanlage für eine Brennkraftmaschine
DE102006039882B3 (de) * 2006-08-25 2007-12-20 Siemens Ag Einspritzanlage für eine Brennkraftmaschine und Brennkraftmaschine
DE102007004605A1 (de) 2007-01-30 2008-08-14 Siemens Ag Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine mit einer Hochdruckpumpe
DE102007004605B4 (de) * 2007-01-30 2009-08-13 Continental Automotive Gmbh Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine mit einer Hochdruckpumpe
DE102007039892A1 (de) 2007-08-23 2009-02-26 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102007039893A1 (de) 2007-08-23 2009-02-26 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102007039893B4 (de) * 2007-08-23 2013-05-08 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102007056418A1 (de) 2007-11-23 2009-06-04 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102008055747A1 (de) 2008-11-04 2010-05-06 Continental Automotive Gmbh Verfahren und Vorrichtung zum Betreiben einer Einspritzanlage für eine Brennkraftmaschine
DE102008055935A1 (de) 2008-11-05 2010-05-12 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
US8651089B2 (en) 2008-11-05 2014-02-18 Continental Automotive Gmbh Injection system for an internal combustion engine
DE102009009618A1 (de) 2009-02-19 2010-09-02 Continental Automotive Gmbh Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine
DE102009037407A1 (de) 2009-08-13 2011-04-21 Continental Automotive Gmbh Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine
DE102009057403A1 (de) 2009-12-08 2011-06-09 Continental Automotive Gmbh Vorrichtung zum Betreiben einer Kraftstoffversorgungseinrichtung für eine Brennkraftmaschine
DE102009058841A1 (de) 2009-12-18 2011-06-22 Continental Automotive GmbH, 30165 Druckspeicher für eine Kraftstoffversorgungseinrichtung

Also Published As

Publication number Publication date
JP4253484B2 (ja) 2009-04-15
DE10146740A1 (de) 2003-04-10
EP1296060A3 (fr) 2004-05-12
US6848423B2 (en) 2005-02-01
DE50203322D1 (de) 2005-07-14
JP2003155961A (ja) 2003-05-30
US20040007214A1 (en) 2004-01-15
EP1296060A2 (fr) 2003-03-26

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