EP2464852B1 - Dispositif de dosage de carburant pour une installation d'injection de carburant - Google Patents

Dispositif de dosage de carburant pour une installation d'injection de carburant Download PDF

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Publication number
EP2464852B1
EP2464852B1 EP10728180.0A EP10728180A EP2464852B1 EP 2464852 B1 EP2464852 B1 EP 2464852B1 EP 10728180 A EP10728180 A EP 10728180A EP 2464852 B1 EP2464852 B1 EP 2464852B1
Authority
EP
European Patent Office
Prior art keywords
metering device
housing
fuel metering
fuel
valve piston
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.)
Active
Application number
EP10728180.0A
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German (de)
English (en)
Other versions
EP2464852A1 (fr
Inventor
Tobias Landenberger
Tilman Miehle
Jochen Wessner
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 EP2464852A1 publication Critical patent/EP2464852A1/fr
Application granted granted Critical
Publication of EP2464852B1 publication Critical patent/EP2464852B1/fr
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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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/445—Selection of particular materials
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic materials

Definitions

  • the invention relates to a fuel metering device for a fuel injection system for internal combustion engines according to the preamble of claim 1.
  • Such a fuel metering device is, for example, by the DE 10 2005 025 872 A1 known.
  • the fuel metering device is used for suction-side flow rate control of a fuel pump, which is part of a fuel injection device of an internal combustion engine.
  • the known fuel metering device has an actuated by an electromagnet control valve with a valve piston, through which different flow cross sections can be adjusted in the intake of the high-pressure fuel pump. As a result, the flow rate of the fuel pump is controlled.
  • the solenoid has an armature and a movable armature pin which actuates the valve piston.
  • Anchor bolt and control valve are arranged coaxially one behind the other; the armature is arranged on a control valve opposite end of the anchor bolt.
  • the fuel metering device conventionally comprises a molded plastic part and a hydraulic control part preferably formed by steel parts.
  • the housing from a plastic overmoulding. This expands the housing for the hydraulic control circuit.
  • the case can handle it
  • the fuel metering can be made more compact and cheaper with the same functionality.
  • the technical properties such as formability, hardness, elasticity, breaking strength, temperature resistance and resistance to fuel, by the selection of starting materials, production processes and admixtures of additives within wide limits. So almost every mechanical and / or thermal requirement has to be met.
  • plastic has a low specific weight compared to metal and is relatively inexpensive. Magnetic flows are not affected by plastic.
  • the plastic version allows both the cost-effective production of standard metering units in large quantities as well as the production of smaller special series in which, for example, the socket for electrical contacting is designed differently from the large series, as these jacks later and at a reasonable cost can be connected by welding to the plastic housing.
  • the socket for electrical contacting is designed differently from the large series, as these jacks later and at a reasonable cost can be connected by welding to the plastic housing.
  • the length of the fuel metering device can be reduced by a material-compatible construction, the length of the fuel metering device.
  • the housing has at least one opening for introducing components of the fuel metering device, wherein the openings can each be closed by a cover.
  • the covers which are also preferably made of plastic, sealingly connected to the housing, preferably laser welded.
  • the housing with the covers is a completely sealed unit. It prevents fuel that can occur in the form of leaks in principle everywhere in the interior of the fuel metering device, escaping to the outside.
  • the housing causes a favorable damping with respect to vibrations.
  • an anchor bolt of the actuating device is axially guided by at least one bearing, preferably at least one bearing bush.
  • the axial guidance can be improved by two bushings are arranged at a relatively large distance from each other in the interior of the fuel metering device.
  • tilting of the armature can be prevented and, in particular, radially acting force components exerted on the armature by the actuating device (for example by an electromagnet) can be absorbed.
  • the anchor bolt and the bushings may be made of metal or plastic, wherein the anchor bolt and the bearing bushes may be made of different materials.
  • valve piston is guided axially in a separate metal sleeve.
  • the metal sleeve can ensure a sufficiently good mobility of the valve piston with low frictional forces.
  • the valve piston may be axially guided in a guide of the housing. Since the plastic material of the housing can be made very smooth, a good mobility of the valve piston is guaranteed here. In addition, this embodiment is particularly easy.
  • a plug receptacle for electrical contacting is provided on the housing, wherein the plug receptacle is formed as a separate component, preferably made of plastic, and that the plug receptacle sealingly connected to the housing, preferably laser welded, is.
  • the plug receptacle is an integral part of the plastic housing, or that the plug receptacle is a separate component. This can be used on a standard housing different plug receptacles (according to different standards) for the fuel metering.
  • FIG. 1 shows a first embodiment of a metering device 10 according to the invention in vertical section.
  • the metering device 10 is preferably arranged in a high-pressure fuel pump for operating an internal combustion engine (not shown).
  • the metering device 10 comprises on an actuating device 12 and an integrated control valve 14.
  • the actuating device 12 essentially consists of a magnetic coil 16, an armature 18 with anchor bolt 20 and a magnet pot 22 which partially surrounds the magnetic coil 16 and the armature 18.
  • the anchor bolt 20 may be made of metal or plastic.
  • the magnet pot 22 serves as a magnetic conclusion.
  • FIG. 1 is disposed below the magnetic coil 16, a magnetic cone 24.
  • the anchor bolt 20 is axially guided by a first bearing bush 26 and a second bearing bush 28, wherein the bearing bushes 26 and 28 are each arranged in the region of the two ends of the anchor bolt 20.
  • the bushings 26 and 28 may be made of metal or plastic.
  • Above the second bearing bush 28 is in FIG. 1 a residual air gap disc 30 is arranged.
  • the magnetic coil 16 on the right side has an electrical contact point 32 in the upper area, to which a first contact pin 34 connects, which leads the electrical contact via a second contact pin 36 into a plug receptacle 38.
  • the breakthrough point of the first contact pin 34 to the interior of the metering device 10 is sealed by an O-ring 40 to protect the contact pin 34 from a short circuit as well as the entire connector receptacle 38 from corrosive fuel.
  • the control valve 14 has a displaceable, sleeve-shaped valve piston 42, which bears against the anchor bolt 20 and is actuated by the anchor bolt 20.
  • a compression spring 44 is arranged, which counteracts the force of the armature pin 20 moving actuator 12.
  • the entire metering device 10 (actuator 12 and control valve 14) is enclosed by a plastic housing 46.
  • the plastic housing 46 thereby fixes the magnetic coil 16, the first and second bearing bushes 26 and 28, the electrical contact pins 34 and 36 with the plug receptacle 38 and provides a guide for the movable valve piston 42.
  • the plastic housing 46 may be an individual housing, the can be produced by an encapsulation; it can also be a standard housing (universal housing).
  • the plastic housing 46 has a first mounting opening 48.
  • the plastic housing 46 has a second mounting opening 50.
  • the mounting openings 48 and 50 are closed by cover-like cover caps 52 and 54 and laser welded to the plastic housing 46 (see reference numerals 56 and 58).
  • the plastic housing 46 with the caps 52 and 54 is a completely sealed unit.
  • the compression spring 44 is supported on the front side on a bottom 60 of the valve piston 42 and on the rear side on a part of the plastic housing 46, which is designed as a spring plate 62.
  • the spring plate 62 has in the center an inlet opening 64, which the interior of the valve piston 42 with a (not shown) prefeed pump of a fuel injection system of a Internal combustion engine connects.
  • the plastic housing 46 in a lateral region on in FIG. 1 Upper region of the valve piston 42 has a radially directed outlet opening 66 to the fuel high pressure pump, not shown in a hydraulic operative connection.
  • radial passage openings for discharging the fuel flowing through the inlet opening 64 are arranged in the wall of the valve piston.
  • the passage opening may be a laser-cut slot in almost any shape or as a bore.
  • an axially sealing O-ring 68 is arranged above the outlet opening 66, wherein a radially sealing O-ring 70 is arranged in the region of the inlet opening 64.
  • the flow-through in the metering device 10 can also be reversed (not shown).
  • the opening 64 would then be hydraulically connected to the high-pressure fuel pump, while the opening 66 would be connected to the pressure side of the prefeed pump and thus would form the inlet into the metering device 10.
  • FIG. 2 shows a second embodiment of the metering device 10 in vertical section.
  • the valve piston 42 is guided in a metal sleeve 72.
  • the metering device 10 has an axially displaceable adjusting member 74, which acts on the one hand as a spring plate 62 and on the other hand to bias the compression spring 44 according to an installation accordingly. After installation of the compression spring 44, the adjustment member 74 is fixed inextricably.
  • FIG. 3 shows a third embodiment of the metering device 10 in vertical section.
  • the illustration shows left of a center line 76, the metering device 10 in the open position and right of the center line 76, the metering device 10 in the closed position.
  • the metering device 10 is installed in this embodiment in a universal plastic housing.
  • the universal housing has a spacer sleeve 78 in order to fasten the metering device 10 in the high-pressure fuel pump, for example with a screw connection.
  • the universal housing initially comprises no plug receptacle, but only a profile 80 for inserting a standardized plug receptacle 38 as a separate component, as well as a possibility for inserting at least the first electrical contact 34.
  • the metering device 10 can be adapted to different plug-in systems.
  • the plug receptacle 38 is laser welded to the plastic housing 46, wherein the profile 80 is part of the plastic housing 46.

Landscapes

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

Claims (9)

  1. Dispositif de dosage de carburant (10) pour une installation d'injection de carburant dans un moteur à combustion interne et comprenant un boîtier (46), le dispositif de dosage de carburant (10) présentant une soupape de régulation (14) actionnée par un dispositif d'actionnement (12) avec un piston de soupape (42), et le boîtier (46) se composant d'un surmoulage en plastique, caractérisé en ce que le boîtier (46) présente au moins une ouverture (48, 50) pour l'introduction de composants du dispositif de dosage de carburant (10), l'au moins une ouverture (48, 50) pouvant être à chaque fois fermée par un couvercle (52, 54).
  2. Dispositif de dosage de carburant (10) selon la revendication 1, caractérisé en ce que le boîtier (46) présente une fonction d'étanchéité vers l'extérieur par rapport au carburant.
  3. Dispositif de dosage de carburant (10) selon la revendication 2, caractérisé en ce que l'au moins un couvercle (52, 54) est connecté de manière hermétique au boîtier (46), de préférence par soudage laser.
  4. Dispositif de dosage de carburant (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un goujon d'induit (20) du dispositif d'actionnement (12) est guidé axialement par au moins un palier, de préférence au moins une douille-palier (26, 28).
  5. Dispositif de dosage de carburant (10) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le piston de soupape (42) est guidé axialement dans une douille métallique séparée (72).
  6. Dispositif de dosage de carburant (10) selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le piston de soupape (42) est guidé axialement dans un guidage du boîtier (46).
  7. Dispositif de dosage de carburant (10) selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une transition magnétique à un induit (18) du dispositif d'actionnement (12) se produit dans une région intérieure d'une bobine magnétique (16) du dispositif d'actionnement (12).
  8. Dispositif de dosage de carburant (10) selon l'une quelconque des revendications précédentes, caractérisé en ce que l'on prévoit sur le boîtier (46) un logement par enfichage (38) pour un contact électrique.
  9. Dispositif de dosage de carburant (10) selon la revendication 8, caractérisé en ce que le logement par enfichage (38) est réalisé sous forme de composant séparé, de préférence en plastique, et en ce que le logement par enfichage (38) est connecté de manière hermétique au boîtier (46), de préférence par soudage laser.
EP10728180.0A 2009-08-13 2010-06-22 Dispositif de dosage de carburant pour une installation d'injection de carburant Active EP2464852B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910028501 DE102009028501A1 (de) 2009-08-13 2009-08-13 Kraftstoffzumesseinrichtung für eine Kraftstoffeinspritzanlage
PCT/EP2010/058791 WO2011018265A1 (fr) 2009-08-13 2010-06-22 Dispositif de dosage de carburant pour une installation d'injection de carburant

Publications (2)

Publication Number Publication Date
EP2464852A1 EP2464852A1 (fr) 2012-06-20
EP2464852B1 true EP2464852B1 (fr) 2013-08-14

Family

ID=42664750

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10728180.0A Active EP2464852B1 (fr) 2009-08-13 2010-06-22 Dispositif de dosage de carburant pour une installation d'injection de carburant

Country Status (9)

Country Link
US (1) US8925522B2 (fr)
EP (1) EP2464852B1 (fr)
JP (1) JP5474192B2 (fr)
CN (1) CN102725508B (fr)
DE (1) DE102009028501A1 (fr)
ES (1) ES2426477T3 (fr)
IN (1) IN2012DN00752A (fr)
RU (1) RU2561355C2 (fr)
WO (1) WO2011018265A1 (fr)

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DE102011076029A1 (de) 2011-05-18 2012-11-22 Robert Bosch Gmbh Kraftstoffzumesseinrichtung für eine Kraftstoffeinspritzanlage
DE102011076259A1 (de) 2011-05-23 2012-11-29 Robert Bosch Gmbh Kraftstoffzumesseinrichtung für eine Kraftstoffeinspritzanlage
DE102012010986A1 (de) * 2012-06-02 2013-12-05 Thomas Magnete Gmbh Elektrohydraulisches Vorsteuerventil
DE102013216982A1 (de) * 2013-08-27 2015-03-05 Robert Bosch Gmbh Zumesseinheit
WO2015043637A1 (fr) * 2013-09-26 2015-04-02 Robert Bosch Gmbh Ensemble doseur
WO2015043635A1 (fr) * 2013-09-26 2015-04-02 Robert Bosch Gmbh Ensemble doseur
DE102013224296A1 (de) * 2013-11-27 2015-05-28 Robert Bosch Gmbh Elektrische Steckvorrichtung zum Anschluss einer Magnetspule und/oder eines Sensorelements
CN104214031A (zh) * 2014-08-05 2014-12-17 中国第一汽车股份有限公司无锡油泵油嘴研究所 一种共轨泵计量阀
EP3026306B1 (fr) * 2014-11-25 2019-10-02 Jtekt Corporation Soupape à solénoïde
WO2017029028A1 (fr) * 2015-08-17 2017-02-23 Robert Bosch Gmbh Logement pour une unité de commande de carburant d'une pompe à haute pression
DE102016215745A1 (de) * 2016-08-23 2018-03-01 Robert Bosch Gmbh Elektromagnetisch betätigbares Saugventil sowie Verfahren zur Herstellung eines elektromagnetisch betätigbaren Saugventils
KR20220017239A (ko) * 2020-08-04 2022-02-11 현대자동차주식회사 자동차용 연료탱크 밀폐밸브
KR20220168376A (ko) * 2021-06-16 2022-12-23 현대자동차주식회사 밀폐밸브
CN114508601B (zh) * 2022-04-19 2022-07-08 广东威灵电机制造有限公司 一种电磁阀、制冷设备及汽车

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DE19853103A1 (de) 1998-11-18 2000-05-25 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen
DE10036939B4 (de) * 2000-07-28 2005-06-09 Siemens Ag Rückschlagventil
US6807943B2 (en) 2002-08-05 2004-10-26 Husco International, Inc. Motor vehicle fuel injection system with a high flow control valve
JP4457827B2 (ja) 2004-09-24 2010-04-28 株式会社デンソー 電磁弁
RU2298819C2 (ru) * 2005-05-11 2007-05-10 ООО НПК "Оптолинк" Интегрально-оптический модуль для волоконно-оптического гироскопа
DE102005025872A1 (de) 2005-06-06 2006-12-07 Robert Bosch Gmbh Kraftstoffzumesseinheit für eine Kraftstoffhochdruckpumpe und Kraftstoffhochdruckpumpe
DE102007021593A1 (de) 2007-05-08 2008-11-13 Continental Automotive Gmbh Kraftstoffpumpe für ein Einspritzsystem einer Brennkraftmaschine
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DE102008018018A1 (de) 2008-04-09 2009-10-15 Continental Automotive Gmbh Pumpe zur Förderung eines Fluids

Also Published As

Publication number Publication date
JP5474192B2 (ja) 2014-04-16
JP2013501879A (ja) 2013-01-17
RU2561355C2 (ru) 2015-08-27
DE102009028501A1 (de) 2011-02-17
RU2012109100A (ru) 2013-10-20
US8925522B2 (en) 2015-01-06
EP2464852A1 (fr) 2012-06-20
ES2426477T3 (es) 2013-10-23
WO2011018265A1 (fr) 2011-02-17
CN102725508B (zh) 2015-05-20
CN102725508A (zh) 2012-10-10
IN2012DN00752A (fr) 2015-06-19
US20120152208A1 (en) 2012-06-21

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