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EP1296060A2 - 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
EP1296060A2
EP1296060A2 EP02018834A EP02018834A EP1296060A2 EP 1296060 A2 EP1296060 A2 EP 1296060A2 EP 02018834 A EP02018834 A EP 02018834A EP 02018834 A EP02018834 A EP 02018834A EP 1296060 A2 EP1296060 A2 EP 1296060A2
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.)
Granted
Application number
EP02018834A
Other languages
German (de)
English (en)
Other versions
EP1296060A3 (fr
EP1296060B1 (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 one Fuel injection device for an internal combustion engine according to the preamble of claim 1.
  • Such a fuel injection device is by DE 198 53 103 A1 known.
  • This fuel injector has a fuel accumulator and one High pressure fuel pump, through which fuel depends on Operating parameters of the internal combustion engine in the Fuel storage is promoted.
  • one Pre-feed pump provided by the fuel from a Fuel tank to the suction side of the High pressure fuel pump is promoted.
  • one is Fuel metering device for controlling the through the High pressure fuel pump in the fuel storage delivered fuel amount provided.
  • the Fuel metering device is between the Pre-feed pump and the high-pressure fuel pump arranged, so that through this the delivered by the pre-feed pump and the suction side of the high-pressure fuel pump Fuel quantity is set. From the pre-feed pump to much fuel delivered becomes the suction side of the Feed pump returned.
  • the fuel injection device with the Features according to claim 1 has the advantage that the drive power required for the pre-feed pump can be reduced and that no strong heating of the Fuel occurs because only the required amount of fuel is promoted. Besides, is the metering device is not that of the pre-feed pump generated 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 injector according to a second Embodiment
  • Figure 3 the A fuel injector according to a third Embodiment
  • Figure 4 the A fuel injector according to a fourth Embodiment.
  • FIG. 1 to 4 is one 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 stocked.
  • the fuel injection device has a prefeed pump 12 on, through the fuel from the fuel tank 10 is promoted to a high-pressure fuel pump 14.
  • the High-pressure fuel pump 14 delivers fuel into one Fuel storage 16, for example tubular or in any other shape can be formed. from Fuel storage 16 lead lines 18 to the Injectors 20 arranged in cylinders of the internal combustion engine from.
  • Control valve 22 arranged through an opening of the Injectors are controlled so as to fuel injection to effect by the respective injector 20 or To prevent fuel injection.
  • the control valves 22 are controlled by an electronic control device 23 controlled by the depending on Operating parameters of the internal combustion engine, such as for example speed, load, temperature and other, the Time and duration of fuel injection by the Injectors 20 is determined.
  • Introduces from the injectors 20 At least return for unused fuel indirectly, for example, via one for all injectors common line 24 into the fuel tank 10 back. From the fuel storage 16 can also Return line 26 to fuel tank 10, in which a pressure relief valve 28 is arranged to prevent an inadmissible in the fuel accumulator 16 high pressure builds up.
  • the high-pressure fuel pump 14 is mechanically driven by the Internal combustion engine and therefore proportional to the speed of the Internal combustion engine driven.
  • the prefeed pump 12 can also mechanically by the internal combustion engine be driven, being for the high pressure fuel pump 14 and the pre-feed pump 12 a common drive shaft can be provided.
  • the pre-feed pump 12 can 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 evenly spaced from each other Pump elements 30, each one by one Camshaft 32 driven in one stroke Have pump piston 34, each one Limit pump work space 36.
  • the pump pistons 34 When they move radially Moving inside are the pump work spaces 36 with the outlet the pre-feed pump 12 and are connected with fuel filled, the pump work rooms 36 from Fuel storage 16 are separated.
  • the pump work spaces 36 During one respective delivery strokes of the pump pistons 34 if they are moving radially inward are the pump work spaces 36 connected to the fuel accumulator 16 and from the outlet of the Pre-feed pump 12 separated.
  • a or several filters are preferably a or several filters arranged.
  • Fuel metering device 44 Between the fuel tank 10 and the Pre-feed pump 12, in particular between the fine filter 42 and the pre-feed pump 12 is one Fuel metering device 44 arranged.
  • the Fuel metering device 44 has an electrically in particular electromagnetically operated control valve 46 through which the flow from the fuel tank 10 to the feed pump 12 is set.
  • the Fuel metering device 44 is also by the Controlled device 23, in such a way that the Pre-feed pump 12 promotes an amount of fuel and the High-pressure fuel pump 14 supplies, which in turn by the high pressure fuel pump 14 under high pressure in the Fuel storage 16 is promoted to Fuel storage 16 a predetermined, of Operating parameters of the internal combustion engine dependent pressure maintain.
  • the fuel metering device 44 By the fuel metering device 44 the flow from the fuel tank 10 to Pre-feed pump 12 are completely blocked, completely released be or with a partially open Flow cross section can be released. A release of a partial flow cross section through the Fuel meter 44 can be achieved by this is controlled pulse-width modulated, whereby the size of the released flow cross-section depends is of the pulse width.
  • Such Fuel metering device 44 is, for example, by the DE 198 53 103 A1 mentioned at the outset, to which hereby Reference is made and their content to the content of this Registration heard.
  • Embodiment of the fuel injector is parallel to the flange or the lines with the Throttle point 47 arranged a pressure valve 48 through which an inlet 50 to the drive area of the High-pressure fuel pump 14 controlled by the camshaft 32 becomes. If the predetermined by the pre-feed pump 12 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 area with the camshaft 32 arrives there and ensures adequate lubrication.
  • a throttle point is downstream of the pressure valve 48 52 provided in the inlet through which the flow through the Inlet is limited so that not too much fuel is branched off to the drive area of the high-pressure pump 14.
  • the inlet 50 can also be via a further throttle point 54 with the prefeed pump 12 be connected via which the drive area of the High-pressure fuel pump 14 a constantly open Has connection with the pre-feed pump 12.
  • the drive area of the high-pressure fuel pump 14 forms a relief area and this connection serves an amount of fuel generated by the prefeed pump 12 due to possible leaks in the metering device 44, that is, if this is the flow from Fuel tank 10 to the feed pump 12 is not can completely block the amount of fuel delivered not to supply the pump work rooms 36 and one adequate lubrication of the drive area of the Ensure high pressure fuel pump 14 even if due to low fuel consumption Internal combustion engine by the high pressure fuel pump 14 and the prefeed pump 12 does not actually deliver any fuel would need to be. This is for example in overrun mode the case of the internal combustion engine.
  • the high-pressure fuel pump 14, the prefeed pump 12, the Pressure valve 48, the inlet 50, the throttle point 52, the Throttle point 54 and the fuel metering device 44 are preferably combined into a common structural unit.
  • the fuel injection device is according to shown a second embodiment. Same parts are provided with the same reference numbers as for first embodiment and it will be in the following essential only those of the first embodiment deviating characteristics explained.
  • the return 24 of the Injectors 20 is not in the second embodiment led directly into the fuel tank 10 but opens into the drive area of the high-pressure fuel pump 14 with their camshaft 32 and thus contributes to it Lubrication at.
  • a line 60 leads from the drive area continue to the fuel tank 10.
  • pressure valve 48 may be provided so that Lubrication of the drive area of the high pressure fuel pump 14 both through the return 24 from the injectors 20 amount of fuel flowing as well as that through the pressure valve 48 controlled amount of fuel is available.
  • a further throttle point 62 be provided in the fuel injector according to the second Embodiment.
  • the throttle point 62 can in one Connection with a return to the fuel tank 10 can 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 prefeed pump 12 as Relief area returning connection 63. If a complete blocking of the flow from Fuel tank 10 to the feed pump 12 through the Fuel metering device 44 is guaranteed, so the Connection with the throttle point 62 to one Relief area also eliminated.
  • the pressure valve 48 with the downstream throttle point 52 provided. In the case, that by the pre-feed pump 12 little or no Fuel quantity is promoted and the pressure valve 48 is not opens is provided that a lubrication of the Drive area of the high-pressure fuel pump 14 by itself fuel collected there can be ensured. In the drive area can possibly fuel through existing leakages of the pump elements 30 arrive.
  • the inlet to the feed pump 12 is not completely blocked can in turn be the connection to one Relief area with the further throttle point 62 be provided, as shown in Figure 3 in a Connection 64 to a return to the Fuel tank 10 or as in the second Embodiment in a connection to the suction side of the Pre-feed pump 12 can be arranged.
  • Embodiment of the fuel injector is provided that their drive area 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 52 does not apply.
  • the connection to one Relief area with the further throttle point 62 be provided in a connection 64 to a Return in the fuel tank 10 or in a Connection 63 to the suction side of the feed pump 12 is arranged can be.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
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 true EP1296060A2 (fr) 2003-03-26
EP1296060A3 EP1296060A3 (fr) 2004-05-12
EP1296060B1 EP1296060B1 (fr) 2005-06-08

Family

ID=7699905

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 (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1408388A1 (fr) * 2002-10-09 2004-04-14 Robert Bosch Gmbh Dispositif de régulation de débit en particulier pour un système d'injection de carburant pour un moteur à combustion interne
WO2006134002A1 (fr) * 2005-06-16 2006-12-21 Robert Bosch Gmbh Systeme d'injection de carburant pour moteur a combustion interne
WO2007093554A1 (fr) * 2006-02-15 2007-08-23 Continental Automotive Gmbh Installation d'injection pour moteur à combustion interne et moteur à combusTion interne
EP1798409A3 (fr) * 2005-12-14 2007-12-12 Siemens Aktiengesellschaft Système d'injection de carburant pour un moteur à combustion
WO2008023031A1 (fr) 2006-08-25 2008-02-28 Continental Automotive Gmbh installation d'injection pour moteur à combustion interne et moteur à combustion interne
US8312862B2 (en) 2007-08-23 2012-11-20 Continental Automotive Gmbh Injection system for an internal combustion engine
US8635989B2 (en) 2008-11-04 2014-01-28 Continental Automotive Gmbh Method and device for operating an injection system for an internal combustion engine

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE102006018164B3 (de) * 2006-04-19 2007-08-30 Siemens Ag Verfahren und Vorrichtung zur Steuerung einer Einspritzanlage für eine Brennkraftmaschine
DE102007004605B4 (de) 2007-01-30 2009-08-13 Continental Automotive Gmbh Hochdruckpumpe und Einspritzanlage für eine Brennkraftmaschine mit einer Hochdruckpumpe
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
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
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
DE102009028023A1 (de) * 2009-07-27 2011-02-03 Robert Bosch Gmbh Hochdruck-Einspritzsystem mit Kraftstoffkühlung aus Niederdruckbereich
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
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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853103A1 (de) 1998-11-18 2000-05-25 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen

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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
EP1321663A3 (fr) * 2001-12-19 2003-07-02 Robert Bosch Gmbh Dispositif d'injection de combustible pour moteur à combustion interne

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19853103A1 (de) 1998-11-18 2000-05-25 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1408388A1 (fr) * 2002-10-09 2004-04-14 Robert Bosch Gmbh Dispositif de régulation de débit en particulier pour un système d'injection de carburant pour un moteur à combustion interne
WO2006134002A1 (fr) * 2005-06-16 2006-12-21 Robert Bosch Gmbh Systeme d'injection de carburant pour moteur a combustion interne
US8371267B2 (en) 2005-06-16 2013-02-12 Robert Bosch Gmbh Fuel injection system for an internal combustion engine
EP1798409A3 (fr) * 2005-12-14 2007-12-12 Siemens Aktiengesellschaft Système d'injection de carburant pour un moteur à combustion
WO2007093554A1 (fr) * 2006-02-15 2007-08-23 Continental Automotive Gmbh Installation d'injection pour moteur à combustion interne et moteur à combusTion interne
US7861693B2 (en) 2006-02-15 2011-01-04 Continental Automotive Gmbh Injection system for an internal combustion engine, and internal combustion engine
WO2008023031A1 (fr) 2006-08-25 2008-02-28 Continental Automotive Gmbh installation d'injection pour moteur à combustion interne et moteur à combustion interne
US8312862B2 (en) 2007-08-23 2012-11-20 Continental Automotive Gmbh Injection system for an internal combustion engine
US8635989B2 (en) 2008-11-04 2014-01-28 Continental Automotive Gmbh Method and device for operating an injection system for an internal combustion engine

Also Published As

Publication number Publication date
JP4253484B2 (ja) 2009-04-15
EP1296060A3 (fr) 2004-05-12
EP1296060B1 (fr) 2005-06-08
US6848423B2 (en) 2005-02-01
US20040007214A1 (en) 2004-01-15
DE10146740A1 (de) 2003-04-10
DE50203322D1 (de) 2005-07-14
JP2003155961A (ja) 2003-05-30

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